Heteroarylbenzimidazole compounds

This application is the U.S. national phase of International Application No. PCT/EP2016/002126 filed Dec. 15, 2016, which designated the U.S. and claims priority to EP Patent Application No. 15201230.8, filed Dec. 18, 2015, EP Patent Application No. 16160885.6, filed Mar. 17, 2016, EP Patent Application No. 16193418.7, filed Oct. 12, 2016, the entire contents of each of which are hereby incorporated by reference.

SEQUENCE LISTING

The instant application contains a Sequence Listing which has been filed electronically in ASCII format and is hereby incorporated by reference in its entirety. Said ASCII copy, created on Oct. 10, 2018, is named 6487-0210_SL.txt and is 9,221 bytes in size.

The present invention covers heteroarylbenzimidazole compounds of general formula (I) as described and defined herein, methods of preparing said compounds, intermediate compounds useful for preparing said compounds, pharmaceutical compositions and combinations comprising said compounds, and the use of said compounds for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of hyperproliferative and/or inflammatory disorders, as a sole agent or in combination with other active ingredients.

BACKGROUND

The present invention covers heteroarylbenzimidazole compounds of general formula (I) which inhibit Tank-binding kinase 1 (TBK1) and/or IκB kinase epsilon (IKKε).

Tank-binding kinase 1 (TBK1) and IκB kinase epsilon (IKKε) are two non-canonical IκB kinases (IKKs). They play crucial roles in interferon regulatory factor (IRF) and nuclear factor kappaB (NF-κB) signaling cascades. TBK1 and IKKε share 49% identity and 65% similarity with each other and the kinase domains are 27% identical to IKKα and IKKβ (Shen R R & Hahn W C (2011) Emerging roles for the non-canonical IKKs in cancer. Oncogene 30(6):631-641). Both IKKε and TBK1 are comprised of an N-terminal kinase domain, an ubiquitin-like domain, a C-terminal LZ and a HLH motif (Larabi A, et al. (2013) Crystal structure and mechanism of activation of TANK-binding kinase 1. Cell reports 3(3):734-746). Despite their similarity in structure, TBK1 and IKKε exhibit differential expression patterns. TBK1, like IKKα and IKKβ, is ubiquitously expressed. In contrast, IKKε expression is restricted to particular tissue compartments, with highest levels detected in lymphoid tissues, peripheral blood lymphocytes and the pancreas. Various epithelial-derived cell lines also exhibit IKKε expression (reviewed in Shen R R & Hahn W C (2011) Emerging roles for the non-canonical IKKs in cancer. Oncogene 30(6):631-641).

TBK1 was originally identified as an IKK-related Serine/Threonine kinase which, in complex with IKKε, induces the transcription of IFN-I genes as part of the anti-viral innate immune response. Within this pathway, TBK1 resides downstream of Toll-like receptors and has as natural substrates the transcription factors IRF3 and IRF7 which, upon phosphorylation by TBK1, translocate to the nucleus and trigger IFN-I gene transcription (Han K J, et al. (2004) Mechanisms of the TRIF-induced interferon-stimulated response element and NF-kappaB activation and apoptosis pathways. The Journal of biological chemistry 279(15): 15652-15661).

Although TBK1 and IKKε are not a part of the classical IKKα/β/γ signaling complex, these kinases were originally characterized as activators of NF-κB and target multiple NF-κB members and effectors. Both IKK-related kinases phosphorylate IκBα at one of the two-serine residues typically targeted on IκBα (Shen R R & Hahn W C (2011) Emerging roles for the non-canonical IKKs in cancer. Oncogene 30(6):631-641).

TBK1 and IKKε have been linked to the pathophysiology of several diseases and represent promising potential targets for drug development as is demonstrated by several drug finding projects, both from academia and from the pharmaceutical industry as reviewed recently by Yu and colleagues (Yu T, et al. (2015) TBK1 inhibitors: a review of patent literature (2011-2014). Expert opinion on therapeutic patents: 1-12).

Recent literature data have provided clear and robust evidence for a role of TBK1 and IKKε in cancer biology.

IKKε was found to be amplified in breast cancer lines and breast carcinomas. Subsequent experiments identified IKKε as a breast cancer oncogene (Boehm J S, et al. (2007) Integrative genomic approaches identify IKBKE as a breast cancer oncogene. Cell 129(6):1065-1079). Work by other groups further confirmed the role of IKKε (and TBK1) in breast cancer (e.g. Barbie T U, et al. (2014) Targeting an IKBKE cytokine network impairs triple-negative breast cancer growth. The Journal of clinical investigation 124(12):5411-5423, Jiang Z, Liu J C, Chung P E, Egan S E, & Zacksenhaus E (2014) Targeting HER2(+) breast cancer: the TBK1/IKKepsilon axis. Oncoscience 1(2):180-182) and demonstrated a role in glioma (Guan H, et al. (2011) IKBKE is over-expressed in glioma and contributes to resistance of glioma cells to apoptosis via activating NF-kappaB. The Journal of pathology 223(3):436-445).

TBK1 is up-regulated under hypoxic conditions and was shown to behave as a pro-angiogenic factor (Korherr C, et al. (2006) Identification of proangiogenic genes and pathways by high-throughput functional genomics: TBK1 and the IRF3 pathway. Proceedings of the National Academy of Sciences of the United States of America 103(11):4240-4245). Moreover, TBK1 over-expression in HUVEC cells induces the secretion of pro-angiogenic factors via the activation of IRF3 (Korherr C, et al. (2006) Identification of proangiogenic genes and pathways by high-throughput functional genomics: TBK1 and the IRF3 pathway. Proceedings of the National Academy of Sciences of the United States of America 103(11):4240-4245). In addition, TBK1 has been identified as a key factor linking innate immune signaling to tumor cell survival via the small GTPase and Ras effector RalB (Chien Y, et al. (2006) RalB GTPase-mediated activation of the IkappaB family kinase TBK1 couples innate immune signaling to tumor cell survival. Cell 127(1):157-170).

Apparently, Ras-transformed cancer cells are addicted to TBK1-induced survival signals, and TBK1 kinase inhibition may therefore constitute a tumor cell-specific approach to cancer treatment. In line with this, TBK1 was shown to be essential for cell lines with activated KRas. This links RalB mediated activation of TBK1 to the generation of specific NF-κB-regulated survival signals downstream of oncogenic KRas (Barbie D A, et al. (2009) Systematic RNA interference reveals that oncogenic KRAS-driven cancers require TBK1. Nature 462(7269):108-112). Moreover, it was shown that an autocrine circuit between KRAs via TBK1/IKKε to CCL5 and IL-6 secretion could be responsible for an autostimulatory growth stimulus of tumor cells. This was shown for lung adenocarcinomas, especially for non-small cell lung cancers (NSCLC) (Zhu Z, et al. (2014) Inhibition of KRAS-driven tumorigenicity by interruption of an autocrine cytokine circuit. Cancer discovery 4(4):452-465).

Besides its role in cancer, TBK1 has been proposed as a target for the treatment of autoimmune diseases, inflammation and other diseases. TBK1 is involved in regulating rheumatoid synovitis and also acts as a key regulator in neuroinflammation, microvascular inflammation and gastritis. Additional potential indications include obesity and type 2 diabetes. TBK1 signaling has also been shown to be involved in mediating normal tension glaucoma, familial amyotrophic lateral sclerosis (ALS) and frontotemporal dementia diseases. In the field of cancer, there are an increasing number of reports demonstrating that TBK1 mediates cell apoptosis and proliferation in cancer cell lines, especially those that depend on oncogenic KRAS expression. Additionally, it was shown that TBK1 plays a key role in maintaining drug resistance in prostate cancer (PCa) cells by interaction with mammalian target of rapamycin and inhibiting its function, which can induce cell-cycle arrest in PCa cells. Also, several reports have suggested that TBK1 is involved in breast cancer regulation, especially in human HER2-positive breast cancer cells. TBK1 silencing decreased the expression of epithelial markers and increased the expression of mesenchymal markers in ERα (estrogen receptor)-positive breast cancer cells. Furthermore, TBK1 plays a significant role in radiation-induced epithelial-mesenchymal transition. Additionally, TBK1-dependent mechanism for NF-κB signaling pathway contributes to autophagy addiction in K-Ras-driven non-small-cell lung cancer cells (reviewed in Yu T, et al. (2015) TBK1 inhibitors: a review of patent literature (2011-2014). Expert opinion on therapeutic patents: 1-12).

PRIOR ART

Various inhibitors of TBK1 and/or IKKε derived from chemotypes different from the compounds of the present invention have been described in patent applications and scientific publications as listed below:

WO 2010127754 discloses 3-([1,2,3]-triazol-4-yl-pyrrolo[2.3-b]pyridine derivatives as inhibitors of PDK1, IKKs and TBK 1.
WO 2011046970 discloses amino-pyrimidine compounds as inhibitors of TBK1 and/or IKKε.
WO 2012010826 discloses pyrimidine compounds as inhibitors of TBK1 and/or IKKε.
WO 2012104007 discloses 7-azaindole derivatives as inhibitors or PDK1, IKKε, TBK 1 and TGF-beta.
WO 2012161877 discloses pyridine and pyrazine derivatives as inhibitors of TBK1 and IKKε.
WO 2012161879 discloses thiazole derivatives as inhibitors of TBK1 and IKKε.
E. G. Mclver et al., Bioorg. Med. Chem. Lett. 2012, 22, 7169-7173, disclose pyrimidine derivatives as inhibitors of TBK1 and IKKε.
T. Wang et al., Bioorg. Med. Chem. Lett. 2012, 22, 2063-2069, disclose azabenzimidazole derivatives as inhibitors of TBK1 and IKKε.
CN 103251600 discloses a 2-amino-4-(3′-cyano-4′-pyrrolidyl)phenyl pyrimidine compound inter alia as inhibitor of TBK-1.
WO 2013024282 discloses an inhibitor of one or both of TBK1 and IKKε, or a down-regulator of the expression of one or both TBK1 and IKKε, for use in a method of treating a cancer that is dependent on the PI3kinase pathway, and cites multiple further patent applications and scientific publications disclosing further inhibitors of TBK1 and IKKε.
WO 2013034238 discloses benzonitrile derivatives as inhibitors of TBK1 and IKKε.
WO 2013075785 discloses 3-cyanaryl-1H-pyrazolo[2.3-b]pyridine derivatives as inhibitors of TBK1 and IKKε.
WO 2013117285 discloses furo-[3,2b] and thieno-[3.2-b]pyridine derivatives as inhibitors of TBK1 and IKKε.
WO 2014004863 discloses heteroaromatic compounds as inhibitors of TBK1 and/or IKKε.
J. W. Johannes et al., Bioorg. Med. Chem. Lett. 2014, 24, 1138-1143, disclose 6-aryl-azabenzimidazole derivatives as inhibitors of TBK1 and IKKε.
US 20150344473 discloses fused heteroaromatic compounds as inhibitors of TBK1 and IKKε.
US 20160289196 discloses pyrazole derivatives as inhibitors of TNIK, TBK1 and/or IKKε.
US 20160297815 discloses 7-azaindole and 4,7-diazaindole derivatives as inhibitors of TBK1 and/or IKKε.

The subject is also addressed by a recent review article, see T. Yu, Y. Yang, D. Q. Yin, S. Hong, Y.-J. Son, J.-H. Kim and J. Y, Cho, TBK1 inhibitors: a review of patent literature (2011-2014), Expert Opin. Ther. Patents 2015, 25(11), 1385-1396.

A number of published patent applications disclose chemical structures showing a certain structural similarity to the compounds of the present invention which however address different mechanisms of biological activity and/or different technical fields:

WO 1998056376 discloses heteroaryl compounds for the modulation of protein tyrosine kinase related signal transduction.
WO 2002076438 discloses ligands of the Fit-1 receptor.
WO 2004058762 discloses inhibitors of Mitogen Activated Protein Kinase-activated Protein Kinase-2 (MK-2).
WO 2004085425 discloses fused azole derivatives as Kinase inhibitors.
WO 2005020921 discloses c-Kit modulators and method of use.
US 2005038023 discloses pyrazole compounds as Protein Kinase inhibitors.
WO 2006099379 discloses benzazole derivatives as beta-Secretase inhibitors.
WO 2007084390 discloses organic compounds as HDAC inhibitors.
WO 2007089512 discloses heterocyclic compounds as activators of Glucokinase.
WO 2007100646 discloses multicyclic compounds as modulators of various protein kinase receptor enzymes, such as Tie-2 and Aurora kinase.
WO 2008057280 discloses multicyclic compounds as modulators of various protein kinase receptors, such as Tie-2 and Aurora kinase.
WO 2010034797 discloses 1H-benzimidazole-5-carboxamides as anti-inflammatory agents.
WO 2010115736 discloses heterocyclic compounds as inhibitors of dihydroorotate dehydrogenase.
WO 2011161159 discloses heterocyclic compounds as Kinase inhibitors.
WO 2012068546 discloses heterocycle amines as inhibitors of IRAK-1 and IRAK-4.
WO 2015031564 discloses substituted 1H-benzo[d]imidazole series compounds as lysine specific demethylase (LSD-1) inhibitors.

However, the state of the art does not describe the heteroarylbenzimidazole compounds of general formula (I) of the present invention as described and defined herein.

It has now been found, and this constitutes the basis of the present invention, that the compounds of the present invention have surprising and advantageous properties.

In particular, the compounds of the present invention have surprisingly been found to effectively inhibit TBK1 and/or IKKε and may therefore be used for the treatment or prophylaxis of hyperproliferative and/or inflammatory disorders, such as cancer, for example.

DESCRIPTION OF THE INVENTION

In accordance with a first aspect, the present invention covers compounds of general formula (I):

embedded image

- in which

R¹represents a group selected from
- pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, isoxazolyl, thienyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl, triazinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
- in which “*” represents the point of attachment to the rest of the molecule, or

R¹represents a group selected from pyridine-3-yl or pyridazin-3-yl, optionally substituted with one R⁸group;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₆-alkoxy;

R⁴represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy and C₁-C₄-haloalkoxy;

R⁵represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl and C₃-C₆-cycloalkyl;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl and (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-,
- said C₃-C₆-cycloalkyl and said (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl;

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₃-haloalkoxy)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₈-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, heterospirocycloalkyl, phenyl, heteroaryl, —CN, —(CH₂)—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³, —O—C(═O)—N(R¹¹)R^11a, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)—R¹³, —S(═O)₂—R¹³, —S(═O)₂—N(R¹¹)R^11aand —S(═O)(═NR¹⁷)R¹³, said C₃-C₆-cycloalkyl, said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)- and said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl,
- said 4- to 7-membered heterocycloalkyl, said 5- to 7-membered heterocycloalkenyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from oxo, C₁-C₃-alkyl and C₁-C₃-haloalkyl, and
- said heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, trifluoromethyl, C₁-C₃-alkoxy and trifluoromethoxy; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —(NR¹⁶—(CH₂)₃—O)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—;

R⁸represents a hydrogen atom or a group selected from methyl, ethyl, methoxy, ethoxy and dimethylamino;

R⁹represents a hydrogen atom or a —CN or C₁-C₃-alkyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, —C(═O)R¹⁸, —C(═O)OR¹⁸and —S(═O)₂R¹⁸;

R¹²represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl and C₁-C₃-haloalkyl;

R¹³represents a group selected from C₁-C₄-alkyl and benzyl;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom or a group selected from hydroxyl, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy and (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-;

R¹⁵represents a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₆-alkyl)-, (C₁-C₃-alkoxy)-(C₂-C₃-alkoxy)-(C₁-C₆-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹⁶represents a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl;

R¹⁷represents a hydrogen atom or a group selected from —CN, —C(═O)OR¹³, C₁-C₄-alkyl and benzyl;

R¹⁸represents a C₁-C₃-alkyl group;

x represents an integer selected from 1, 2, 3 and 4,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

Definitions

The term “substituted” means that one or more hydrogen atoms on the designated atom or group are replaced with a selection from the indicated group, provided that the designated atom's normal valency under the existing circumstances is not exceeded. Combinations of substituents and/or variables are permissible.

The term “optionally substituted” means that the number of substituents can be equal to or different from zero. Unless otherwise indicated, it is possible that optionally substituted groups are substituted with as many optional substituents as can be accommodated by replacing a hydrogen atom with a non-hydrogen substituent on any available carbon or nitrogen or sulfur atom. Commonly, and if not stated otherwise, it is possible for the number of optional substituents, when present, to be 1, 2, 3, 4 or 5, in particular 1, 2 or 3.

As used herein, the term “one or more”, e.g. in the definition of the substituents of the compounds of general formula (I) of the present invention, means “1, 2, 3, 4 or 5, particularly 1, 2, 3 or 4, more particularly 1, 2 or 3, even more particularly 1 or 2”.

Should a composite substituent be composed of more than one parts, e.g. (C₁-C₄-alkoxy)-(C₁-C₄-alkyl)-, it is possible for the position of a given part to be at any suitable position of said composite substituent, i.e. the C₁-C₄-alkoxy part can be attached to any carbon atom of the C₁-C₄-alkyl part of said (C₁-C₄-alkoxy)-(C₁-C₄-alkyl)- group. A hyphen at the beginning or at the end of such a composite substituent indicates the point of attachment of said composite substituent to the rest of the molecule. Should a ring, comprising carbon atoms and optionally one or more heteroatoms, such as nitrogen, oxygen or sulfur atoms for example, be substituted with a substituent, it is possible for said substituent to be bound at any suitable position of said ring, be it bound to a suitable carbon atom and/or to a suitable heteroatom.

The term “comprising” when used in the specification includes “consisting of”.

If within the present text any item is referred to as “supra” within the description it is referred to any of the respective disclosures made within the specification in any of the preceding pages, or above on the same page.

If within the present text any item is referred to as “infra” within the description it is referred to any of the respective disclosures made within the specification in any of the subsequent pages, or below on the same page.

If within the present text any item is referred to as “as mentioned herein”, it means that it may be mentioned anywhere in the present text.

The terms as mentioned in the present text have the following meanings:

The term “halogen atom” means a fluorine, chlorine, bromine or iodine atom, particularly a fluorine, chlorine or bromine atom.

As used herein, an oxo substituent represents an oxygen atom, which is bound to a carbon atom or to a sulfur atom via a double bond.

The term “C₁-C₆-alkyl” means a linear or branched, saturated, monovalent hydrocarbon group having 1, 2, 3, 4, 5 or 6 carbon atoms, e.g. a methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, isobutyl, tert-butyl, pentyl, isopentyl, 2-methylbutyl, 1-methylbutyl, 1-ethylpropyl, 1,2-dimethylpropyl, neo-pentyl, 1,1-dimethylpropyl, hexyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl, 1,1-dimethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 2,3-dimethylbutyl, 1,2-dimethylbutyl or 1,3-dimethylbutyl group, or an isomer thereof. Particularly, said group has 1, 2, 3 or 4 carbon atoms (“C₁-C₄-alkyl”), e.g. a methyl, ethyl, propyl, isopropyl, butyl, sec-butyl isobutyl, or tert-butyl group, more particularly 1, 2 or 3 carbon atoms (“C₁-C₃-alkyl”), e.g. a methyl, ethyl, n-propyl or isopropyl group.

The term “C₂-C₆-alkylene” means a linear or branched, saturated, divalent hydrocarbon chain (or “tether”) having 2, 3, 4, 5 or 6 carbon atoms, e.g. —CH₂—CH₂— (“ethylene” or “C₂-alkylene”), —CH₂—CH₂—CH₂—, —C(H)(CH₃)—CH₂— or —C(CH₃)₂—) (“propylene” or “C₃-alkylene”), or, for example —CH₂—C(H)(CH₃)—CH₂—, —CH₂—C(CH₃)₂—), —CH₂—CH₂—CH₂—CH₂— (“butylene” or “C₄-alkylene”), “C₅-alkylene”, e.g. —CH₂—CH₂—CH₂—CH₂—CH₂— (“n-pentylene”), or “—C₆-alkylene-”, e.g. —CH₂—CH₂—CH₂—CH₂—CH₂—CH₂— (“n-hexylene”) or —C(CH₃)₂—C(CH₃)₂— group. Particularly, said alkylene is a —C(CH₃)₂—C(CH₃)₂— group.

The term “C₁-C₆-hydroxyalkyl” means a linear or branched, saturated, monovalent hydrocarbon group in which the term “C₁-C₆-alkyl” is defined supra, and in which 1, 2 or 3 hydrogen atoms are replaced with a hydroxy group, e.g. a hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 1,2-dihydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 1-hydroxypropyl, 1-hydroxypropan-2-yl, 2-hydroxypropan-2-yl, 2,3-dihydroxypropyl, 1,3-dihydroxypropan-2-yl, 3-hydroxy-2-methyl-propyl, 2-hydroxy-2-methyl-propyl, 1-hydroxy-2-methyl-propyl group.

The term “C₁-C₆-alkylsulfanyl” means a linear or branched, saturated, monovalent group of formula (C₁-C₆-alkyl)-S—, in which the term “C₁-C₆-alkyl” is as defined supra, e.g. a methylsulfanyl, ethylsulfanyl, propylsulfanyl, isopropylsulfanyl, butylsulfanyl, sec-butylsulfanyl, isobutylsulfanyl, tert-butylsulfanyl, pentylsulfanyl, isopentylsulfanyl, hexylsulfanyl group.

The term “C₁-C₆-haloalkyl” means a linear or branched, saturated, monovalent hydrocarbon group in which the term “C₁-C₆-alkyl” is as defined supra, and in which one or more of the hydrogen atoms are replaced, identically or differently, with a halogen atom. Particularly, said halogen atom is a fluorine atom, to give rise to a “C₁-C₆-fluoroalkyl” group, particularly a “C₁-C₄-fluoroalkyl” group, more particularly, a “C₁-C₃-fluoroalkyl” group. Said C₁-C₆-haloalkyl group is, for example, fluoromethyl, difluoromethyl, trifluoromethyl, 2-fluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, pentafluoroethyl, 3,3,3-trifluoropropyl or 1,3-difluoropropan-2-yl.

The term “C₁-C₆-alkoxy” means a linear or branched, saturated, monovalent group of formula (C₁-C₆-alkyl)-O—, in which the term “C₁-C₆-alkyl” is as defined supra, e.g. a methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, isobutoxy, tert-butoxy, pentyloxy, isopentyloxy or n-hexyloxy group, or an isomer thereof.

The term “C₁-C₆-haloalkoxy” means a linear or branched, saturated, monovalent C₁-C₆-alkoxy group, as defined supra, in which one or more of the hydrogen atoms is replaced, identically or differently, with a halogen atom. Particularly, said halogen atom is a fluorine atom to give rise to a “C₁-C₆-fluoroalkoxy” group, particularly a “C₁-C₄-fluoroalkoxy” group, more particularly, a “C₁-C₃-fluoroalkoxy” group. Said C₁-C₆-haloalkoxy group is, for example, fluoromethoxy, difluoromethoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, pentafluoroethoxy or pentafluoropropoxy.

The term “C₁-C₆-haloalkylsulfanyl” means a linear or branched, saturated, monovalent C₁-C₆-alkylsulfanyl group, as defined supra, in which one or more of the hydrogen atoms is replaced, identically or differently, with a halogen atom. Particularly, said halogen atom is a fluorine atom to give rise to a “C₁-C₆-fluoroalkylsulfanyl” group, particularly a “C₁-C₄-fluoroalkylsulfanyl” group, more particularly, a “C₁-C₃-fluoroalkylsulfanyl” group. Said C₁-C₆-haloalkylsulfanyl group is, for example, fluoromethylsulfanyl, difluoromethylsulfanyl, trifluoromethylsulfanyl, 2,2,2-trifluoroethylsulfanyl or pentafluoroethylsulfanyl.

The term “C₂-C₆-alkenyl” means a linear or branched, monovalent hydrocarbon group, which contains one double bond, and which has 2, 3, 4, 5 or 6 carbon atoms, particularly 2 or 3 carbon atoms (“C₂-C₃-alkenyl”). Said alkenyl group is, for example, an ethenyl (or “vinyl”), prop-2-en-1-yl (or “allyl”), prop-1-en-1-yl, but-3-enyl, but-2-enyl, but-1-enyl, pent-4-enyl, pent-3-enyl, pent-2-enyl, pent-1-enyl, hex-5-enyl, hex-4-enyl, hex-3-enyl, hex-2-enyl, hex-1-enyl, prop-1-en-2-yl (or “isopropenyl”), 2-methylprop-2-enyl, 1-methylprop-2-enyl, 2-methylprop-1-enyl, 1-methylprop-1-enyl, 3-methylbut-3-enyl, 2-methylbut-3-enyl, 1-methylbut-3-enyl, 3-methylbut-2-enyl, 2-methylbut-2-enyl, 1-methylbut-2-enyl, 3-methylbut-1-enyl, 2-methylbut-1-enyl, 1-methylbut-1-enyl, 1,1-dimethylprop-2-enyl, 1-ethylprop-1-enyl, 1-propylvinyl, 1-isopropylvinyl, 4-methylpent-4-enyl, 3-methylpent-4-enyl, 2-methylpent-4-enyl, 1-methylpent-4-enyl, 4-methylpent-3-enyl, 3-methylpent-3-enyl, 2-methylpent-3-enyl, 1-methylpent-3-enyl, 4-methylpent-2-enyl, 3-methylpent-2-enyl, 2-methylpent-2-enyl, 1-methylpent-2-enyl, 4-methylpent-1-enyl, 3-methylpent-1-enyl, 2-methylpent-1-enyl, 1-methylpent-1-enyl, 3-ethylbut-3-enyl, 2-ethylbut-3-enyl, 1-ethylbut-3-enyl, 3-ethylbut-2-enyl, 2-ethylbut-2-enyl, 1-ethylbut-2-enyl, 3-ethylbut-1-enyl, 2-ethylbut-1-enyl, 1-ethylbut-1-enyl, 2-propylprop-2-enyl, 1-propylprop-2-enyl, 2-isopropylprop-2-enyl, 1-isopropylprop-2-enyl, 2-propylprop-1-enyl, 1-propylprop-1-enyl, 2-isopropylprop-1-enyl, 1-isopropylprop-1-enyl, 3,3-dimethylprop-1-enyl, 1-(1,1-dimethylethyl)ethenyl group. Particularly, said group is vinyl or allyl.

The term “C₂-C₆-alkynyl” means a linear or branched, monovalent hydrocarbon group which contains one triple bond, and which contains 2, 3, 4, 5 or 6 carbon atoms, particularly 2 or 3 carbon atoms (“C₂-C₃-alkynyl”). Said C₂-C₆-alkynyl group is, for example, ethynyl, prop-1-ynyl, prop-2-ynyl (or “propargyl”), but-1-ynyl, but-2-ynyl, but-3-ynyl, pent-1-ynyl, pent-2-ynyl, pent-3-ynyl, pent-4-ynyl, hex-1-ynyl, hex-2-ynyl, hex-3-ynyl, hex-4-ynyl, hex-5-ynyl, 1-methylprop-2-ynyl, 2-methylbut-3-ynyl, 1-methylbut-3-ynyl, 1-methylbut-2-ynyl, 3-methylbut-1-ynyl, 1-ethylprop-2-ynyl, 3-methylpent-4-ynyl, 2-methylpent-4-ynyl, 1-methyl-pent-4-ynyl, 2-methylpent-3-ynyl, 1-methylpent-3-ynyl, 4-methylpent-2-ynyl, 1-methyl-pent-2-ynyl, 4-methylpent-1-ynyl, 3-methylpent-1-ynyl, 2-ethylbut-3-ynyl, 1-ethylbut-3-ynyl, 1-ethylbut-2-ynyl, 1-propylprop-2-ynyl, 1-isopropylprop-2-ynyl, 2,2-dimethylbut-3-ynyl, 1,1-dimethylbut-3-ynyl, 1,1-dimethylbut-2-ynyl or 3,3-dimethylbut-1-ynyl group. Particularly, said alkynyl group is ethynyl, prop-1-ynyl or prop-2-ynyl.

The term “C₃-C₈-cycloalkyl” means a saturated, monovalent, mono- or bicyclic hydrocarbon ring which contains 3, 4, 5, 6, 7 or 8 carbon atoms (“C₃-C₆-cycloalkyl”). Particularly, said group is monocyclic and has 3, 4, 5 or 6 carbon atoms (“C₃-C₆-cycloalkyl”). Said C₃-C₈-cycloalkyl group is for example, a monocyclic hydrocarbon ring, e.g. a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl group, or a bicyclic hydrocarbon ring, e.g. a bicyclo[4.2.0]octyl or octahydropentalenyl.

The term “C₄-C₈-cycloalkenyl” means a monovalent, mono- or bicyclic hydrocarbon ring which contains 4, 5, 6, 7 or 8 carbon atoms and one double bond. Particularly, said ring contains 4, 5 or 6 carbon atoms (“C₄-C₆-cycloalkenyl”). Said C₄-C₈-cycloalkenyl group is for example, a monocyclic hydrocarbon ring, e.g. a cyclobutenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl or cyclooctenyl group, or a bicyclic hydrocarbon ring, e.g. a bicyclo[2.2.1]hept-2-enyl or bicyclo[2.2.2]oct-2-enyl.

The term “C₃-C₈-cycloalkoxy” means a saturated, monovalent, mono- or bicyclic group of formula (C₃-C₈-cycloalkyl)-O—, which contains 3, 4, 5, 6, 7 or 8 carbon atoms (“C₃-C₈-cycloalkyloxy”), in which the term “C₃-C₈-cycloalkyl” is defined supra, e.g. a cyclopropyloxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy, cycloheptyloxy or cyclooctyloxy group.

The term “spirocycloalkyl” means a saturated, monovalent bicyclic hydrocarbon group in which the two rings share one common ring carbon atom, and wherein said bicyclic hydrocarbon group contains 5, 6, 7, 8, 9, 10 or 11 carbon atoms, it being possible for said spirocycloalkyl group to be attached to the rest of the molecule via any one of the carbon atoms except the spiro carbon atom. Said spirocycloalkyl group is, for example, spiro[2.2]pentyl, spiro[2.3]hexyl, spiro[2.4]heptyl, spiro[2.5]octyl, spiro[2.6]nonyl, spiro[3.3]heptyl, spiro[3.4]octyl, spiro[3.5]nonyl, spiro[3.6]decyl, spiro[4.4]nonyl, spiro[4.5]decyl, spiro[4.6]undecyl or spiro[5.5]undecyl.

The terms “4- to 7-membered heterocycloalkyl” and “4- to 6-membered heterocycloalkyl” mean a monocyclic, saturated heterocycle with 4, 5, 6 or 7 or, respectively, 4, 5 or 6 ring atoms in total, which contains one or two identical or different ring heteroatoms from the series N, O and S, it being possible for said heterocycloalkyl group to be attached to the rest of the molecule via any one of the carbon atoms or, if present, a nitrogen atom.

Said heterocycloalkyl group, without being limited thereto, can be a 4-membered ring, such as azetidinyl, oxetanyl or thietanyl, for example; or a 5-membered ring, such as tetrahydrofuranyl, 1,3-dioxolanyl, thiolanyl, pyrrolidinyl, imidazolidinyl, pyrazolidinyl, 1,2-oxazolidinyl, 1,3-oxazolidinyl or 1,3-thiazolidinyl, for example; or a 6-membered ring, such as tetrahydropyranyl, tetrahydrothiopyranyl, piperidinyl, morpholinyl, dithianyl, thiomorpholinyl, piperazinyl, 1,3-dioxanyl, 1,4-dioxanyl or 1,2-oxazinanyl, for example, or a 7-membered ring, such as azepanyl, 1,4-diazepanyl or 1,4-oxazepanyl, for example.

Particularly, “4- to 6-membered heterocycloalkyl” means a 4- to 6-membered heterocycloalkyl as defined supra containing one ring nitrogen atom and optionally one further ring heteroatom from the series: N, O, S. More particularly, “5- or 6-membered heterocycloalkyl” means a monocyclic, saturated heterocycle with 5 or 6 ring atoms in total, containing at least one heteroatom from the series: N, O.

The term “5- to 7-membered heterocycloalkenyl” means a monocyclic, unsaturated, non-aromatic heterocycle with 5, 6 or 7 ring atoms in total, which contains one or two double bonds and one or two identical or different ring heteroatoms from the series: N, O, S; it being possible for said heterocycloalkenyl group to be attached to the rest of the molecule via any one of the carbon atoms or, if present, a nitrogen atom.

Said heterocycloalkenyl group is, for example, 4H-pyranyl, 2H-pyranyl, 2,5-dihydro-1H-pyrrolyl, [1,3]dioxolyl, 4H-[1,3,4]thiadiazinyl, 2,5-dihydrofuranyl, 2,3-dihydrofuranyl, 2,5-dihydrothiophenyl, 2,3-dihydrothiophenyl, 4,5-dihydrooxazolyl or 4H-[1,4]thiazinyl.

The term “heterospirocycloalkyl” means a bicyclic, saturated heterocycle with 6, 7, 8, 9, 10 or 11 ring atoms in total, in which the two rings share one common ring carbon atom, which “heterospirocycloalkyl” contains one or two identical or different ring heteroatoms from the series: N, O, S; it being possible for said heterospirocycloalkyl group to be attached to the rest of the molecule via any one of the carbon atoms, except the spiro carbon atom, or, if present, a nitrogen atom.

Said heterospirocycloalkyl group is, for example, azaspiro[2.3]hexyl, azaspiro[3.3]heptyl, oxaazaspiro[3.3]heptyl, thiaazaspiro[3.3]heptyl, oxaspiro[3.3]heptyl, oxazaspiro[5.3]nonyl, oxazaspiro[4.3]octyl, azaspiro[4,5]decyl, oxazaspiro[5.5]undecyl, diazaspiro[3.3]heptyl, thiazaspiro[3.3]heptyl, thiazaspiro[4.3]octyl, azaspiro[5.5]undecyl, or one of the further homologous scaffolds such as spiro[3.4]-, spiro[4.4]-, spiro[2.4]-, spiro[2.5]-, spiro[2.6]-, spiro[3.5]-, spiro[3.6]-, spiro[4.5]- and spiro[4.6]-.

The term “fused heterocycloalkyl” means a bicyclic, saturated heterocycle with 6, 7, 8, 9 or 10 ring atoms in total, in which the two rings share two adjacent ring atoms, which “fused heterocycloalkyl” contains one or two identical or different ring heteroatoms from the series: N, O, S; it being possible for said fused heterocycloalkyl group to be attached to the rest of the molecule via any one of the carbon atoms or, if present, a nitrogen atom.

Said fused heterocycloalkyl group is, for example, azabicyclo[3.3.0]octyl, azabicyclo[4.3.0]nonyl, diazabicyclo[4.3.0]nonyl, oxazabicyclo[4.3.0]nonyl, thiazabicyclo[4.3.0]-nonyl or azabicyclo[4.4.0]decyl.

The term “bridged heterocycloalkyl” means a bicyclic, saturated heterocycle with 7, 8, 9 or 10 ring atoms in total, in which the two rings share two common ring atoms which are not adjacent, which “bridged heterocycloalkyl” contains one or two identical or different ring heteroatoms from the series: N, O, S; it being possible for said bridged heterocycloalkyl group to be attached to the rest of the molecule via any one of the carbon atoms, except the spiro carbon atom, or, if present, a nitrogen atom.

Said bridged heterocycloalkyl group is, for example, azabicyclo[2.2.1]heptyl, oxazabicyclo[2.2.1]heptyl, thiazabicyclo[2.2.1]heptyl, diazabicyclo[2.2.1]heptyl, azabicyclo[2.2.2]octyl, diazabicyclo[2.2.2]octyl, oxazabicyclo[2.2.2]octyl, thiazabicyclo[2.2.2]octyl, azabicyclo[3.2.1]octyl, diazabicyclo[3.2.1]octyl, oxazabicyclo[3.2.1]octyl, thiazabicyclo[3.2.1]octyl, azabicyclo[3.3.1]nonyl, diazabicyclo[3.3.1]nonyl, oxazabicyclo[3.3.1]nonyl, thiazabicyclo[3.3.1]-nonyl, azabicyclo[4.2.1]nonyl, diazabicyclo[4.2.1]nonyl, oxazabicyclo[4.2.1]nonyl, thiazabicyclo[4.2.1]nonyl, azabicyclo[3.3.2]decyl, diazabicyclo[3.3.2]decyl, oxazabicyclo[3.3.2]decyl, thiazabicyclo[3.3.2]decyl or azabicyclo[4.2.2]decyl.

The term “heteroaryl” means a monovalent, monocyclic, bicyclic or tricyclic aromatic ring having 5, 6, 8, 9, 10, 11, 12, 13 or 14 ring atoms (a “5- to 14-membered heteroaryl” group), particularly 5, 6, 9 or 10 ring atoms, which contains at least one ring heteroatom and optionally one, two or three further ring heteroatoms from the series: N, O and/or S, and which is bound via a ring carbon atom or optionally via a ring nitrogen atom (if allowed by valency).

Said heteroaryl group can be a 5-membered heteroaryl group, such as, for example, thienyl, furanyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, pyrazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, triazolyl, thiadiazolyl or tetrazolyl; or a 6-membered heteroaryl group, such as, for example, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl or triazinyl; or a tricyclic heteroaryl group, such as, for example, carbazolyl, acridinyl or phenazinyl; or a 9-membered heteroaryl group, such as, for example, benzofuranyl, benzothienyl, benzoxazolyl, benzisoxazolyl, benzimidazolyl, benzothiazolyl, benzotriazolyl, indazolyl, indolyl, isoindolyl, indolizinyl or purinyl; or a 10-membered heteroaryl group, such as, for example, quinolinyl, quinazolinyl, isoquinolinyl, cinnolinyl, phthalazinyl, quinoxalinyl or pteridinyl.

In general, and unless otherwise mentioned, the heteroaryl or heteroarylene groups include all possible isomeric forms thereof, e.g.: tautomers and positional isomers with respect to the point of linkage to the rest of the molecule. Thus, for some illustrative non-restricting examples, the term pyridinyl includes pyridin-2-yl, pyridin-3-yl and pyridin-4-yl; or the term thienyl includes thien-2-yl and thien-3-yl.

Particularly, the heteroaryl group is a 5- or 6-membered heteroaryl group.

The term “heteroaryloxy” means a monovalent, monocyclic, bicyclic or tricyclic aromatic group of the formula (heteroaryl)-O—, in which the term “heteroaryl” is as defined supra, e.g. thienyloxy, thiazolyloxy, pyridinyloxy, pyrimidinyloxy, benzofuranyloxy, for example.

The term “phenyloxy” means a group of the formula (phenyl)-O.

The term “C₁-C₆”, as used in the present text, e.g. in the context of the definition of “C₁-C₆-alkyl”, “C₁-C₆-haloalkyl”, “C₁-C₆-hydroxyalkyl”, “C₁-C₆-alkoxy” or “C₁-C₆-haloalkoxy” means an alkyl group having a finite number of carbon atoms of 1 to 6, i.e. 1, 2, 3, 4, 5 or 6 carbon atoms.

Further, as used herein, the term “C₃-C₈”, as used in the present text, e.g. in the context of the definition of “C₃-C₈-cycloalkyl”, means a cycloalkyl group having a finite number of carbon atoms of 3 to 8, i.e. 3, 4, 5, 6, 7 or 8 carbon atoms.

When a range of values is given, said range encompasses each value and sub-range within said range.

For example:

“C₁-C₆” encompasses C₁, C₂, C₃, C₄, C₅, C₆, C₁-C₆, C₁-C₅, C₁-C₄, C₁-C₃, C₁-C₂, C₂-C₆, C₂-C₅, C₂-C₄, C₂-C₃, C₃-C₆, C₃-C₅, C₃-C₄, C₄-C₆, C₄-C₈, and C₅-C₆;

“C₁-C₄” encompasses C₁, C₂, C₃, C₄, C₁-C₄, C₁-C₃, C₁-C₂, C₂-C₄, C₂-C₃and C₃-C₄;

“C₁-C₃” encompasses C₁, C₂, C₃, C₁-C₃, C₁-C₂and C₂-C₃;

“C₂-C₆” encompasses C₂, C₃, C₄, C₅, C₆, C₂-C₆, C₂-C₅, C₂-C₄, C₂-C₃, C₃-C₆, C₃-C₅, C₃-C₄, C₄-C₆, C₄-C₈, and C₅-C₆;

“C₃-C₁₀” encompasses C₃, C₄, C₅, C₆, C₇, C₈, C₉, C₁₀, C₃-C₁₀, C₃-C₉, C₃-C₈, C₃-C₇, C₃-C₆, C₃-C₅, C₃-C₄, C₄-C₁₀, C₄-C₉, C₄-C₈, C₄-C₇, C₄-C₆, C₄-C₈, C₅-C₁₀, C₅-C₉, C₅-C₈, C₅-C₇, C₅-C₆, C₆-C₁₀, C₆-C₉, C₆-C₈, C₆-C₇, C₇-C₁₀, C₇-C₉, C₇-C₈, C₈-C₁₀, C₈-C₉and C₉-C₁₀;

“C₃-C₈” encompasses C₃, C₄, C₅, C₆, C₇, C₈, C₃-C₈, C₃-C₇, C₃-C₆, C₃-C₅, C₃-C₄, C₄-C₈, C₄-C₇, C₄-C₆, C₄-C₈, C₅-C₈, C₅-C₇, C₅-C₆, C₆-C₈, C₆-C₇and C₇-C₈;

“C₃-C₆” encompasses C₃, C₄, C₅, C₆, C₃-C₆, C₃-C₅, C₃-C₄, C₄-C₆, C₄-C₈, and C₅-C₆;

“C_4-8” encompasses C₄, C₅, C₆, C₇, C₈, C₄-C₈, C₄-C₇, C₄-C₆, C₄-C₅, C₅-C₈, C₅-C₇, C₅-C₆, C₆-C₈, C₆-C₇and C₇-C₈;

“C_4-7” encompasses C₄, C₅, C₆, C₇, C₄-C₇, C₄-C₆, C₄-C₈, C₅-C₇, C₅-C₆and C₆-C₇;

“C₄-C₆” encompasses C₄, C₅, C₆, C₄-C₆, C₄-C₈and C₅-C₆;

“C₅-C₁₀” encompasses C₅, C₆, C₇, C₈, C₉, C₁₀, C₅-C₁₀, C₅-C₉, C₅-C₈, C₅-C₇, C₅-C₆, C₆-C₁₀, C₆-C₉, C₆-C₈, C₆-C₇, C₇-C₁₀, C₇-C₉, C₇-C₈, C₈-C₁₀, C₈-C₉and C₉-C₁₀;

“C₆-C₁₀” encompasses C₆, C₇, C₈, C₉, C₁₀, C₆-C₁₀, C₆-C₉, C₆-C₈, C₆-C₇, C₇-C₁₀, C₇-C₉, C₇-C₈, C₈-C₁₀, C₈-C₉and C₉-C₁₀.

As used herein, the term “leaving group” means an atom or a group of atoms that is displaced in a chemical reaction as stable species taking with it the bonding electrons. In particular, such a leaving group is selected from the group comprising: halide, in particular fluoride, chloride, bromide or iodide, (methylsulfonyl)oxy, [(trifluoromethyl)sulfonyl]oxy, [(nonafluorobutyl)-sulfonyl]oxy, (phenylsulfonyl)oxy, [(4-methylphenyl)sulfonyl]oxy, [(4-bromophenyl)sulfonyl]oxy, [(4-nitrophenyl)sulfonyl]oxy, [(2-nitrophenyl)sulfonyl]oxy, [(4-isopropylphenyl)sulfonyl]oxy, [(2,4,6-triisopropylphenyl)sulfonyl]oxy, [(2,4,6-trimethylphenyl)sulfonyl]oxy, [(4-tert-butyl-phenyl)sulfonyl]oxy and [(4-methoxyphenyl)sulfonyl]oxy.

As used herein, the term “protective group” is a protective group attached to an oxygen or nitrogen atom in intermediates used for the preparation of compounds of the general formula (I). Such groups are introduced e.g. by chemical modification of the respective hydroxy or amino group in order to obtain chemoselectivity in a subsequent chemical reaction. Protective groups for hydroxy and amino groups are described for example in T. W. Greene and P. G. M. Wuts in Protective Groups in Organic Synthesis, 4^thedition, Wiley 2006; more specifically, protective groups for amino groups can be selected from substituted sulfonyl groups, such as mesyl-, tosyl- or phenylsulfonyl-, acyl groups such as benzoyl, acetyl or tetrahydropyranoyl, or carbamate based groups, such as tert.-butoxycarbonyl (Boc). Protective groups for hydroxy groups can be selected from acyl groups such as benzoyl, acetyl, pivaloyl or tetrahydropyranoyl, or can include silicon, as in e.g. tert-butyldimethylsilyl, tert-butyldiphenylsilyl, triethylsilyl or triisopropylsilyl.

It is possible for the compounds of general formula (I) to exist as isotopic variants. The invention therefore includes one or more isotopic variant(s) of the compounds of general formula (I), particularly deuterium-containing compounds of general formula (I).

The term “Isotopic variant” of a compound or a reagent is defined as a compound exhibiting an unnatural proportion of one or more of the isotopes that constitute such a compound.

The term “Isotopic variant of the compound of general formula (I)” is defined as a compound of general formula (I) exhibiting an unnatural proportion of one or more of the isotopes that constitute such a compound.

The expression “unnatural proportion” means a proportion of such isotope which is higher than its natural abundance. The natural abundances of isotopes to be applied in this context are described in “Isotopic Compositions of the Elements 1997”, Pure Appl. Chem., 70(1), 217-235, 1998.

Examples of such isotopes include stable and radioactive isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, fluorine, chlorine, bromine and iodine, such as ²H (deuterium), ³H (tritium), ¹¹C, ¹³C, ¹⁴C, ¹⁵N, ¹⁷O, ¹⁸O, ³²P, ³³P, ³³S, ³⁴S, ³⁵S, ³⁶S, ¹⁸F, ³⁶Cl, ⁸²Br, ¹²³I, ¹²⁴I, ¹²⁵I, ¹²⁹I and ¹³¹I, respectively.

With respect to the treatment and/or prophylaxis of the disorders specified herein the isotopic variant(s) of the compounds of general formula (I) preferably contain deuterium (“deuterium-containing compounds of general formula (I)”). Isotopic variants of the compounds of general formula (I) in which one or more radioactive isotopes, such as ³H or ¹⁴C, are incorporated are useful e.g. in drug and/or substrate tissue distribution studies. These isotopes are particularly preferred for the ease of their incorporation and detectability. Positron emitting isotopes such as ¹⁸F or ¹¹C may be incorporated into a compound of general formula (I). These isotopic variants of the compounds of general formula (I) are useful for in vivo imaging applications. Deuterium-containing and ¹³C-containing compounds of general formula (I) can be used in mass spectrometry analyses in the context of preclinical or clinical studies.

Isotopic variants of the compounds of general formula (I) can generally be prepared by methods known to a person skilled in the art, such as those described in the schemes and/or examples herein, by substituting a reagent for an isotopic variant of said reagent, preferably for a deuterium-containing reagent. Depending on the desired sites of deuteration, in some cases deuterium from D₂O can be incorporated either directly into the compounds or into reagents that are useful for synthesizing such compounds. Deuterium gas is also a useful reagent for incorporating deuterium into molecules. Catalytic deuteration of olefinic bonds and acetylenic bonds is a rapid route for incorporation of deuterium. Metal catalysts (i.e. Pd, Pt, and Rh) in the presence of deuterium gas can be used to directly exchange deuterium for hydrogen in functional groups containing hydrocarbons. A variety of deuterated reagents and synthetic building blocks are commercially available from companies such as for example C/D/N Isotopes, Quebec, Canada; Cambridge Isotope Laboratories Inc., Andover, Mass., USA; and CombiPhos Catalysts, Inc., Princeton, N.J., USA.

The term “deuterium-containing compound of general formula (I)” is defined as a compound of general formula (I), in which one or more hydrogen atom(s) is/are replaced by one or more deuterium atom(s) and in which the abundance of deuterium at each deuterated position of the compound of general formula (I) is higher than the natural abundance of deuterium, which is about 0.015%. Particularly, in a deuterium-containing compound of general formula (I) the abundance of deuterium at each deuterated position of the compound of general formula (I) is higher than 10%, 20%, 30%, 40%, 50%, 60%, 70% or 80%, preferably higher than 90%, 95%, 96% or 97%, even more preferably higher than 98% or 99% at said position(s). It is understood that the abundance of deuterium at each deuterated position is independent of the abundance of deuterium at other deuterated position(s).

The selective incorporation of one or more deuterium atom(s) into a compound of general formula (I) may alter the physicochemical properties (such as for example acidity [C. L. Perrin, et al., J. Am. Chem. Soc., 2007, 129, 4490], basicity [C. L. Perrin et al., J. Am. Chem. Soc., 2005, 127, 9641], lipophilicity [B. Testa et al., Int. J. Pharm., 1984, 19(3), 271]) and/or the metabolic profile of the molecule and may result in changes in the ratio of parent compound to metabolites or in the amounts of metabolites formed. Such changes may result in certain therapeutic advantages and hence may be preferred in some circumstances. Reduced rates of metabolism and metabolic switching, where the ratio of metabolites is changed, have been reported (A. E. Mutlib et al., Toxicol. Appl. Pharmacol., 2000, 169, 102). These changes in the exposure to parent drug and metabolites can have important consequences with respect to the pharmacodynamics, tolerability and efficacy of a deuterium-containing compound of general formula (I). In some cases deuterium substitution reduces or eliminates the formation of an undesired or toxic metabolite and enhances the formation of a desired metabolite (e.g. Nevirapine: A. M. Sharma et al., Chem. Res. Toxicol., 2013, 26, 410; Efavirenz: A. E. Mutlib et al., Toxicol. Appl. Pharmacol., 2000, 169, 102). In other cases the major effect of deuteration is to reduce the rate of systemic clearance. As a result, the biological half-life of the compound is increased. The potential clinical benefits would include the ability to maintain similar systemic exposure with decreased peak levels and increased trough levels. This could result in lower side effects and enhanced efficacy, depending on the particular compound's pharmacokinetic/pharmacodynamic relationship. ML-337 (C. J. Wenthur et al., J. Med. Chem., 2013, 56, 5208) and Odanacatib (K. Kassahun et al., WO2012/112363) are examples for this deuterium effect. Still other cases have been reported in which reduced rates of metabolism result in an increase in exposure of the drug without changing the rate of systemic clearance (e.g. Rofecoxib: F. Schneider et al., Arzneim. Forsch./Drug. Res., 2006, 56, 295; Telaprevir: F. Maltais et al., J. Med. Chem., 2009, 52, 7993). Deuterated drugs showing this effect may have reduced dosing requirements (e.g. lower number of doses or lower dosage to achieve the desired effect) and/or may produce lower metabolite loads.

A compound of general formula (I) may have multiple potential sites of attack for metabolism. To optimize the above-described effects on physicochemical properties and metabolic profile, deuterium-containing compounds of general formula (I) having a certain pattern of one or more deuterium-hydrogen exchange(s) can be selected. Particularly, the deuterium atom(s) of deuterium-containing compound(s) of general formula (I) is/are attached to a carbon atom and/or is/are located at those positions of the compound of general formula (I), which are sites of attack for metabolizing enzymes such as e.g. cytochrome P₄₅₀.

Where the plural form of the word compounds, salts, polymorphs, hydrates, solvates and the like, is used herein, this is taken to mean also a single compound, salt, polymorph, isomer, hydrate, solvate or the like.

By “stable compound” or “stable structure” is meant a compound that is sufficiently robust to survive isolation to a useful degree of purity from a reaction mixture, and formulation into an efficacious therapeutic agent.

The compounds of the present invention optionally contain one or more asymmetric centres, depending upon the location and nature of the various substituents desired. It is possible that one or more asymmetric carbon atoms are present in the (R) or (S) configuration, which can result in racemic mixtures in the case of a single asymmetric centre, and in diastereomeric mixtures in the case of multiple asymmetric centres. In certain instances, it is possible that asymmetry also be present due to restricted rotation about a given bond, for example, the central bond adjoining two substituted aromatic rings of the specified compounds.

Separated, pure or partially purified isomers and stereoisomers or racemic or diastereomeric mixtures of the compounds of the present invention are also included within the scope of the present invention. The purification and the separation of such materials can be accomplished by standard techniques known in the art.

The optical isomers can be obtained by resolution of the racemic mixtures according to conventional processes, for example, by the formation of diastereoisomeric salts using an optically active acid or base or formation of covalent diastereomers. Examples of appropriate acids are tartaric, diacetyltartaric, ditoluoyltartaric and camphorsulfonic acid. Mixtures of diastereoisomers can be separated into their individual diastereomers on the basis of their physical and/or chemical differences by methods known in the art, for example, by chromatography or fractional crystallisation. The optically active bases or acids are then liberated from the separated diastereomeric salts. A different process for separation of optical isomers involves the use of chiral chromatography (e.g., HPLC columns using a chiral phase), with or without conventional derivatisation, optimally chosen to maximise the separation of the enantiomers. Suitable HPLC columns using a chiral phase are commercially available, such as those manufactured by Daicel, e.g., Chiracel OD and Chiracel OJ, for example, among many others, which are all routinely selectable. Enzymatic separations, with or without derivatisation, are also useful. The optically active compounds of the present invention can likewise be obtained by chiral syntheses utilizing optically active starting materials.

In order to distinguish different types of isomers from each other reference is made to IUPAC Rules Section E (Pure Appl Chem 45, 11-30, 1976).

The present invention includes all possible stereoisomers of the compounds of the present invention as single stereoisomers, or as any mixture of said stereoisomers, e.g. (R)- or (S)-isomers, in any ratio. Isolation of a single stereoisomer, e.g. a single enantiomer or a single diastereomer, of a compound of the present invention is achieved by any suitable state of the art method, such as chromatography, especially chiral chromatography, for example.

Further, it is possible for the compounds of the present invention to exist as tautomers. For example, any compound of the present invention can exist, as shown below, as a tautomer 1, or tautomer 2 or tautomer 3, or even a mixture in any amount of the three tautomers, namely:

embedded image

The present invention includes all possible tautomers of the compounds of the present invention as single tautomers, or as any mixture of said tautomers, in any ratio.

Further, the compounds of the present invention can exist as N-oxides, which are defined in that at least one nitrogen of the compounds of the present invention is oxidised. The present invention includes all such possible N-oxides.

The present invention also covers useful forms of the compounds of the present invention, such as metabolites, hydrates, solvates, prodrugs, salts, in particular pharmaceutically acceptable salts, and/or co-precipitates.

The compounds of the present invention can exist as a hydrate, or as a solvate, wherein the compounds of the present invention contain polar solvents, in particular water, methanol or ethanol for example, as structural element of the crystal lattice of the compounds. It is possible for the amount of polar solvents, in particular water, to exist in a stoichiometric or non-stoichiometric ratio. In the case of stoichiometric solvates, e.g. a hydrate, hemi-, (semi-), mono-, sesqui-, di-, tri-, tetra-, penta- etc. solvates or hydrates, respectively, are possible. The present invention includes all such hydrates or solvates.

Further, it is possible for the compounds of the present invention to exist in free form, e.g. as a free base, or as a free acid, or as a zwitterion, or to exist in the form of a salt. Said salt may be any salt, either an organic or inorganic addition salt, particularly any pharmaceutically acceptable organic or inorganic addition salt, which is customarily used in pharmacy, or which is used, for example, for isolating or purifying the compounds of the present invention.

The term “pharmaceutically acceptable salt” refers to an inorganic or organic acid addition salt of a compound of the present invention. For example, see S. M. Berge, et al. “Pharmaceutical Salts,” J. Pharm. Sci. 1977, 66, 1-19.

A suitable pharmaceutically acceptable salt of the compounds of the present invention may be, for example, an acid-addition salt of a compound of the present invention bearing a nitrogen atom, in a chain or in a ring, for example, which is sufficiently basic, such as an acid-addition salt with an inorganic acid, or “mineral acid”, such as hydrochloric, hydrobromic, hydroiodic, sulfuric, sulfamic, bisulfuric, phosphoric, or nitric acid, for example, or with an organic acid, such as formic, acetic, acetoacetic, pyruvic, trifluoroacetic, propionic, butyric, hexanoic, heptanoic, undecanoic, lauric, benzoic, salicylic, 2-(4-hydroxybenzoyl)-benzoic, camphoric, cinnamic, cyclopentanepropionic, digluconic, 3-hydroxy-2-naphthoic, nicotinic, pamoic, pectinic, 3-phenylpropionic, pivalic, 2-hydroxyethanesulfonic, itaconic, trifluoromethanesulfonic, dodecylsulfuric, ethanesulfonic, benzenesulfonic, para-toluenesulfonic, methanesulfonic, 2-naphthalenesulfonic, naphthalinedisulfonic, camphorsulfonic acid, citric, tartaric, stearic, lactic, oxalic, malonic, succinic, malic, adipic, alginic, maleic, fumaric, D-gluconic, mandelic, ascorbic, glucoheptanoic, glycerophosphoric, aspartic, sulfosalicylic, or thiocyanic acid, for example.

Further, another suitably pharmaceutically acceptable salt of a compound of the present invention which is sufficiently acidic, is an alkali metal salt, for example a sodium or potassium salt, an alkaline earth metal salt, for example a calcium, magnesium or strontium salt, or an aluminium or a zinc salt, or an ammonium salt derived from ammonia or from an organic primary, secondary or tertiary amine having 1 to 20 carbon atoms, such as ethylamine, diethylamine, triethylamine, ethyldiisopropylamine, monoethanolamine, diethanolamine, triethanolamine, dicyclohexylamine, dimethylaminoethanol, diethylaminoethanol, tris(hydroxymethyl)aminomethane, procaine, dibenzylamine, N-methylmorpholine, arginine, lysine, 1,2-ethylenediamine, N-methylpiperidine, N-methyl-glucamine, N,N-dimethyl-glucamine, N-ethyl-glucamine, 1,6-hexanediamine, glucosamine, sarcosine, serinol, 2-amino-1,3-propanediol, 3-amino-1,2-propanediol, 4-amino-1,2,3-butanetriol, or a salt with a quarternary ammonium ion having 1 to 20 carbon atoms, such as tetramethylammonium, tetraethylammonium, tetra(n-propyl)ammonium, tetra(n-butyl)ammonium, N-benzyl-N,N,N-trimethylammonium, choline or benzalkonium.

Those skilled in the art will further recognise that it is possible for acid addition salts of the claimed compounds to be prepared by reaction of the compounds with the appropriate inorganic or organic acid via any of a number of known methods. Alternatively, alkali and alkaline earth metal salts of acidic compounds of the present invention are prepared by reacting the compounds of the present invention with the appropriate base via a variety of known methods.

The present invention includes all possible salts of the compounds of the present invention as single salts, or as any mixture of said salts, in any ratio.

In the present text, in particular in the Experimental Section, for the synthesis of compounds and of examples of the present invention, when a compound is mentioned as a salt form with the corresponding base or acid, the exact stoichiometric composition of said salt form, as obtained by the respective preparation and/or purification process, is, in most cases, unknown.

Unless specified otherwise, suffixes to chemical names or structural formulae relating to salts, such as “hydrochloride”, “trifluoroacetate”, “sodium salt”, or “×HCl”, “×CF₃COOH”, “×Na⁺”, for example, mean a salt form, the stoichiometry of which salt form not being specified.

This applies analogously to cases in which compounds or examples or salts thereof have been obtained, by the preparation and/or purification processes described, as solvates, such as hydrates, with (if defined) unknown stoichiometric composition.

Furthermore, the present invention includes all possible crystalline forms, or polymorphs, of the compounds of the present invention, either as single polymorph, or as a mixture of more than one polymorph, in any ratio.

In accordance with a second embodiment of the first aspect, the present invention covers compounds of general formula (I):

embedded image

- in which:

R¹represents a group selected from
- pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, isoxazolyl, thienyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl, triazinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
- in which “*” represents the point of attachment to the rest of the molecule, or

R¹represents a group selected from pyridine-3-yl or pyridazin-3-yl, optionally substituted with one R⁸group;

R²represents a group selected from

embedded image

- in which “h” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₆-alkoxy;

R⁴represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy and C₁-C₄-haloalkoxy;

R⁵represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl and C₃-C₆-cycloalkyl;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl and (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-,
- said C₃-C₆-cycloalkyl and said (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl;

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₃-haloalkoxy)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₈-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, heterospirocycloalkyl, phenyl, heteroaryl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³, —O—C(═O)—N(R¹¹)R^11a, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)—R¹³, —S(═O)₂—R¹³, —S(═O)₂—N(R¹¹)R^11aand —S(═O)(═NR¹⁷)R¹³,
- said C₃-C₈-cycloalkyl, said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)- and said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl,
- said 4- to 7-membered heterocycloalkyl, said 5- to 7-membered heterocycloalkenyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from oxo, C₁-C₃-alkyl and C₁-C₃-haloalkyl, and
- said heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, trifluoromethyl, C₁-C₃-alkoxy and trifluoromethoxy; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —(NR¹⁶—(CH₂)₃—O)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—;

R⁸represents a hydrogen atom or a group selected from methyl, ethyl, methoxy, ethoxy and dimethylamino;

R⁹represents a hydrogen atom or a —CN or C₁-C₃-alkyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, —C(═O)R¹⁸, —C(═O)OR¹⁸and —S(═O)₂R¹⁸;

R¹²represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl and C₁-C₃-haloalkyl;

R¹³represents a group selected from C₁-C₄-alkyl and benzyl; R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom or a group selected from hydroxyl, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy and (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-;

R¹⁵represents a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₆-alkyl)-, (C₁-C₃-alkoxy)-(C₂-C₃-alkoxy)-(C₁-C₆-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹⁶represents a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl;

R¹⁷represents a hydrogen atom or a group selected from —CN, —C(═O)OR¹³, C₁-C₄-alkyl and benzyl;

R¹⁸represents a C₁-C₃-alkyl group;

x represents an integer selected from 1, 2, 3 and 4,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a third embodiment of the first aspect, the present invention covers compounds of general formula (I):

embedded image

- in which:

R¹represents a group selected from
- pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, in which “*” represents the point of attachment to the rest of the molecule, or

R¹represents a group selected from pyridine-3-yl or pyridazin-3-yl, optionally substituted with one R⁸group;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₆-alkoxy;

R⁴represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy and C₁-C₄-haloalkoxy;

R⁵represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl and C₃-C₆-cycloalkyl;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₃-C₆-cycloalkyl and (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-,
- said C₃-C₆-cycloalkyl and said (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a C₁-C₃-alkyl group;

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₈-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, phenyl, heteroaryl, —CN, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³—O—C(═O)—N(R¹¹)R^11a, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)₂—R¹³, —S(═O)₂—N(R¹¹)R^11aand —S(═O)(═NR¹⁷)R¹³; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH);

R⁸represents a hydrogen atom or a group selected from methyl, ethyl, methoxy and ethoxy;

R⁹represents a hydrogen atom or a C₁-C₃-alkyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, —C(═O)R¹⁸, C(═O)OR¹⁸and S(═O)₂R¹⁸;

R¹²represents a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹³represents a group selected from C₁-C₄-alkyl and benzyl;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom or a group selected from hydroxyl, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy and (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-;

R¹⁵represents a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₆-alkyl)-, (C₁-C₃-alkoxy)-(C₂-C₃-alkoxy)-(C₁-C₆-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy;

R¹⁶represents a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl;

R¹⁷represents a hydrogen atom or a group selected from —CN, —C(═O)OR¹³, C₁-C₄-alkyl and benzyl;

R¹⁸represents a C₁-C₃-alkyl group;

x represents an integer selected from 1, 2, 3 and 4,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a fourth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₄-alkoxy;

R⁴represents a hydrogen atom or a group selected from C₁-C₃-alkyl and C₁-C₃-fluoroalkyl;

R⁵represents a hydrogen atom or a bromine atom;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₅-cycloalkyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said C₃-C₅-cycloalkyl and said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from methyl and trifluoromethyl;

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-fluoroalkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, 5- to 6-membered heteroaryl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)-, C₁-C₄-alkylsulfanyl, S(═O)—R¹³and —S(═O)₂—R¹³
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from oxo, methyl and trifluoromethyl, and
- said 5- to 6-membered heteroaryl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from methyl, trifluoromethyl and methoxy; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—;

R⁸represents a hydrogen atom or a group selected from methoxy and ethoxy;

R⁹represents a hydrogen atom or a methyl or ethyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one or two times, identically or differently, with a fluorine atom, chlorine atom or bromine atom, or a group selected from —CN, methyl, trifluoromethyl and methoxy;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom, or a group selected from hydroxy, oxo, —CN, methyl, trifluoromethyl and methoxy;

R¹²represents a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)-, C₂-C₄-alkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from methyl, trifluormethyl and methoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from —CN, methyl and trifluoromethyl;

R¹³represents a group selected from C₁-C₄-alkyl and benzyl;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, trifluoromethyl and cyclopropyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-alkoxy, trifluoromethoxy and (C₁-C₂-alkoxy)-(C₁-C₂-alkyl)-;

R¹⁵represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-alkoxy)-(ethoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)- and 4- to 7-membered heterocycloalkyl;

R¹⁶represents a hydrogen atom or a C₁-C₃-alkyl group;

x represents an integer selected from 1 and 2,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a fifth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₄-alkoxy;

R⁴represents a hydrogen atom or a group selected from C₁-C₃-alkyl and C₁-C₃-fluoroalkyl;

R⁵represents a hydrogen atom or a bromine atom;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₅-cycloalkyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said C₃-C₅-cycloalkyl and said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from methyl and trifluoromethyl;

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-fluoroalkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, 5- to 6-membered heteroaryl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)-, C₁-C₄-alkylsulfanyl, S(═O)—R¹³and —S(═O)₂—R¹³
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from oxo, methyl and trifluoromethyl, and
- said 5- to 6-membered heteroaryl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from methyl, trifluoromethyl and methoxy; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—;

R⁸represents a hydrogen atom or a group selected from methoxy and ethoxy;

R⁹represents a hydrogen atom or a methyl or ethyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one or two times, identically or differently, with a fluorine atom, chlorine atom or bromine atom, or a group selected from —CN, methyl, trifluoromethyl and methoxy;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom, or a group selected from hydroxy, oxo, —CN, methyl, trifluoromethyl and methoxy;

R¹²represents a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)-, C₂-C₄-alkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from methyl, trifluormethyl and methoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from —CN, methyl and trifluoromethyl;

R¹³represents a group selected from C₁-C₄-alkyl and benzyl;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, trifluoromethyl and cyclopropyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-alkoxy, trifluoromethoxy and (C₁-C₂-alkoxy)-(C₁-C₂-alkyl)-;

R¹⁵represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-alkoxy)-(ethoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)- and 4- to 7-membered heterocycloalkyl;

R¹⁶represents a hydrogen atom or a C₁-C₃-alkyl group;

x represents an integer selected from 1 and 2,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a sixth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a group selected from C₁-C₄-alkyl and C₁-C₄-alkoxy;

R⁴represents a hydrogen atom or a group selected from C₁-C₃-alkyl and C₁-C₃-fluoroalkyl;

R⁵represents a hydrogen atom;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl and (C₃-C₄-cycloalkyl)-(methyl)-,
- said C₃-C₄-cycloalkyl and said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, —C(═O)—N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and C₁-C₄-alkylsulfanyl; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —((CH₂)₃)—, —((CH₂)₄)—;

R⁸represents a hydrogen atom or a group selected from methoxy and ethoxy;

R⁹represents a hydrogen atom or a methyl or ethyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14aand phenyl,
- said phenyl group being optionally substituted one or two times, identically or differently, with a fluorine atom, chlorine atom or bromine atom, or a group selected from —CN, methyl, trifluoromethyl and methoxy;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group, said group being optionally substituted once with a methyl group;

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)- and C₂-C₄-alkenyl;

R¹³represents a group selected from C₁-C₄-alkyl and benzyl;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, trifluoromethyl and cyclopropyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-alkoxy, trifluoromethoxy and (C₁-C₂-alkoxy)-(C₁-C₂-alkyl)-;

R¹⁵represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-alkoxy)-(ethoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)- and 4- to 7-membered heterocycloalkyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a seventh embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- R³represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom or a group selected from methyl, ethoxy and iso-butoxy;

R⁴represents a hydrogen atom or a group selected from methyl and trifluoromethyl;

R⁵represents a hydrogen atom;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (methoxy)-(C₁-C₃-alkyl)-, C₃-C₅-cycloalkyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said C₃-C₅-cycloalkyl and said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-,
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, and
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁸represents a hydrogen atom or a methoxy group;

R⁹represents a hydrogen atom or a methyl group;

R¹¹represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₃-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl;

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-hydroxyalkyl, (methoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (cyclopropyl)-(methyl)- and allyl,
- said C₃-C₄-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl;

R¹³represents a C₁-C₃-alkyl group;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl;

R¹⁶represents a hydrogen atom or a C₁-C₂-alkyl group;

x represents an integer 1,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a eighth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom or a group selected from methyl, ethoxy and iso-butoxy;

R⁴represents a hydrogen atom, or a group selected from methyl and trifluoromethyl;

R⁵represents a hydrogen atom;

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (methoxy)-(C₁-C₃-alkyl)-, C₃-C₅-cycloalkyl and (C₃—C-cycloalkyl)-(methyl)-,
- said C₃-C₅-cycloalkyl and said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-,
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, and
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁸represents a hydrogen atom or a methoxy group;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₃-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl;

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, (cyclopropyl)-(methyl)- and allyl,
- said C₃-C₄-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl;

R¹³represents a C₁-C₃-alkyl group;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl;

R¹⁶represents a hydrogen atom or a C₁-C₂-alkyl group;

x represents an integer 1,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a ninth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom or a group selected from methyl, ethoxy and iso-butoxy;

R⁴represents a hydrogen atom, or a group selected from methyl and trifluoromethyl;

R⁵represents a hydrogen atom;
- R⁶represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, cyclopropyl and (cyclopropyl)-(methyl)-,
- said cyclopropyl and (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom;

R⁷represents a fluorine atom or a group selected from C₁-C₅-alkyl, C₁-C₂-fluoroalkyl, cyclopropyl, benzyl, —C(═O)—N(R¹¹)R^11a, C₁-C₃-alkoxy, C₁-C₂-fluoroalkoxy and (cyclopropyl)-(methoxy)-;

R⁸represents a hydrogen atom or a methoxy group;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14aand 2-chlorophenyl;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl;

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, (cyclopropyl)-(methyl)- and allyl;

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted once with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a tenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-;

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl;

R¹⁶represents a hydrogen atom or a methyl group, and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a eleventh embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-;

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl;

R¹⁶represents a hydrogen atom or a methyl group, and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twelfth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;
- R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹²and —C(═O)N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁶represents a hydrogen atom or a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirteenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-; or

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a methyl group;

R¹⁰represents a group selected from —C(═O)R¹²and —C(═O)N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁶represents a hydrogen atom or a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a fourteenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, 2-oxa-6-azaspiro[3.3]heptyl-, —NR¹¹R^11a, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-;

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl;

R¹⁶represents a hydrogen atom or a methyl group, and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a fifteenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, 2-oxa-6-azaspiro[3.3]heptyl-, —NR¹¹R^11a, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-;

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted one or two times, identically or differently, with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl;

R¹⁶represents a hydrogen atom or a methyl group, and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a sixteenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, 2-oxa-6-azaspiro[3.3]heptyl-, —NR¹¹R^11a, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-;

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹²and —C(═O)N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl;

R¹⁶represents a hydrogen atom or a methyl group, and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a seventeenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, 2-oxa-6-azaspiro[3.3]heptyl-, —NR¹¹R^11a, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-;

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—;

R⁹represents a methyl group;

R¹⁰represents a group selected from —C(═O)R¹²and —C(═O)N(R¹⁴)R^14a;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl;

R¹⁶represents a hydrogen atom or a methyl group, and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a eighteenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom or a methyl group;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl and (cyclopropyl)-(methyl)-,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom;

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, cyclopropyl, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a,

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl and (cyclopropyl)-(methyl)-;

R¹⁴and R^14a, independently from each other, represent a group selected from methyl and ethyl, or

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted once with a group selected from methyl, methoxy and (methoxy)-(methyl)-;

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a nineteenth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl,
- —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twentieth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl,
- —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-first embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl,
- —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹¹represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-second embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl,
- —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-third embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-fourth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;
- R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-fifth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-sixth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from C₁-C₃-alkyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-;

R⁹represents a methyl group;

R¹¹represents a —C(═O)R¹²group;

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-seventh embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule, the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, cyclopropyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;
- R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl and (cyclopropyl)-(methyl)-; and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-eight embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, cyclopropyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;
- R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl and (cyclopropyl)-(methyl)-;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a twenty-ninth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl and 2,2-difluoro-1-methylcyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirtieth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl and 2,2-difluoro-1-methylcyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-first embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹¹represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-second embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;
- R⁷represents a group selected from methyl, trifluoromethyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-third embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with an thirty-fourth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-;

R⁷represents a group selected from methyl, trifluoromethyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-fifth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-sixth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom, a fluorine atom or a chlorine atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-seventh embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-eighth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- said group being optionally substituted one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁷represents a group selected from methyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl and 2,2-difluoro-1-methylcyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a thirty-ninth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- said group being optionally substituted one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁷represents a group selected from methyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a fortieth embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- said group being optionally substituted with one R⁷group,

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁷represents a group selected from methyl, trifluoromethyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with an forty-first embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁶represents a hydrogen atom or a group selected from (C₃-C₄-cycloalkyl)-(methyl)- and C₂-C₄-fluoroalkyl,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In accordance with a forty-second embodiment of the first aspect, the present invention covers compounds of general formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;

R³represents a hydrogen atom;

R⁴represents a hydrogen atom;

R⁵represents a hydrogen atom;

R⁷represents a chlorine atom or a group selected from C₁-C₃-alkyl, cyclopropyl, dimethylamino, cyclopropylamino, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-;

R^7arepresents an additional R⁷group, selected from a chlorine atom and a group selected from C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-;

R⁹represents a hydrogen atom or a methyl group;

R¹⁰represents a —C(═O)R¹²group;

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

Further Embodiments of the First Aspect of the Present Invention

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from
- pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, isoxazolyl, thienyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl, triazinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group, or
R¹represents a group selected from

embedded image

- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
- in which “*” represents the point of attachment to the rest of the molecule, or

R¹represents a group selected from pyridine-3-yl or pyridazin-3-yl, optionally substituted with one R⁸group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from
- pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, isoxazolyl, thienyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl, triazinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group, or
R¹represents a group selected from

embedded image

- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
- in which “*” represents the point of attachment to the rest of the molecule, or

R¹represents a group selected from pyridine-3-yl or pyridazin-3-yl, optionally substituted with one R⁸group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from
- pyrazolyl, imidazolyl, oxadiazolyl, triazolyl, pyridin-2-yl, pyridin-4-yl, pyrimidinyl and pyrazinyl, said group being optionally substituted with one R⁶group, and said group being, additionally, optionally substituted one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from pyridine-3-yl or pyridazin-3-yl, optionally substituted with one R⁸group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group, or

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- the ring of said group being, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- the ring of said group being, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule; the ring of said group being optionally substituted with one or two further R⁷groups,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a chlorine atom or a group selected from C₁-C₃-alkyl, cyclopropyl, dimethylamino, cyclopropylamino, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group, selected from a chlorine atom and a group selected from C₁-C₆-alkoxy and (cyclopropyl)-(methoxy)-;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a chlorine atom or a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy, and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group, representing a C₁-C₃-alkoxy group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy, and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group, representing a C₁-C₃-alkoxy group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group, representing a methoxy group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a chlorine atom or a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group selected from a chlorine atom and a group selected from C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a group selected from methyl, methoxy and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group selected from methoxy and (cyclopropyl)-(methoxy)-;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy, and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group, representing a C₁-C₃-alkoxy group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- and in which R⁷represents a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,
- and R^7arepresents an additional R⁷group, representing a methoxy group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule, and in which R⁷represents a group selected from methyl, trifluoromethyl, cyclopropyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule, and in which R⁷represents a group selected from methyl, trifluoromethyl, cyclopropyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents an iso-propoxy group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule, and in which R⁷represents a 2,2,2-trifluoroethoxy group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a group selected from methyl, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a group selected from ethylamino, isopropylamino, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl and 3,3-difluoroazetidin-1-yl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a group selected from isopropylamino, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl and 3,3-difluoroazetidin-1-yl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a group selected from (methoxy)-(methyl)- and (cyclopropyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a ethylamino group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a isopropylamino group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a cyclopropylamino group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a cyclobutylamino group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a dimethylamino group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a azetidin-1-yl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a 3,3-difluoroazetidin-1-yl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a (methoxy)-(methyl)- group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a (cyclopropyl)-(methoxy)- group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a group selected from methyl, (cyclopropyl)-(methyl)-amino-, azetidin-1-yl, 3,3-difluoroazetidin-1-yl and pyrrolidin-1-yl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a group selected from azetidin-1-yl, 3,3-difluoroazetidin-1-yl and pyrrolidin-1-yl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a (cyclopropyl)-(methyl)-amino- group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a azetidin-1-yl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a 3,3-difluoroazetidin-1-yl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- and in which R⁷represents a pyrrolidin-1-yl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one or two further R⁷groups,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one or two further R⁷groups,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule; and

R⁶represents a (cycloalkyl)-(methyl)-group,
- said (cycloalkyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule; and

R⁶represents a hydrogen atom or a group selected from (C₃-C₄-cycloalkyl)-(methyl)- and C₂-C₄-fluoroalkyl,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule; and

R⁶represents a group selected from (cyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)- and 2,2,2-trifluoroethyl,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- said group being optionally substituted one or two times, differently or identically, with a R⁷group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule; said group being optionally substituted with one R⁷group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group selected from

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₆-alkoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl and C₁-C₄-alkoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom or a group selected from C₁-C₄-alkyl and C₁-C₄-alkoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom or a group selected from methyl, ethoxy and iso-butoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom or a group selected from methyl, ethoxy and iso-butoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom, a fluorine atom or a chlorine atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a hydrogen atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a fluorine atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R³represents a chlorine atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁴represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy and C₁-C₄-haloalkoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁴represents a hydrogen atom or a group selected from C₁-C₃-alkyl and C₁-C₃-fluoroalkyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁴represents a hydrogen atom, or a group selected from methyl and trifluoromethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁴represents a hydrogen atom or a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁴represents a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁴represents a hydrogen atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁵represents a hydrogen atom or a halogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl and C₃-C₆-cycloalkyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁵represents a hydrogen atom or a fluorine atom or a chlorine atom or a bromine atom or or a group selected from methyl, trifluoromethyl and cyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁵represents a hydrogen atom or a fluorine atom or a chlorine atom or a group selected from methyl, trifluoromethyl and cyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁵represents a hydrogen atom or a fluorine atom or a chlorine atom a group selected from methyl, trifluoromethyl and cyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁵represents a hydrogen atom or a bromine atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁵represents a hydrogen atom;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl and (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-,
- said C₃-C₆-cycloalkyl and said (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₃-C₆-cycloalkyl and (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-,
- said C₃-C₆-cycloalkyl and said (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a C₁-C₃-alkyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₅-cycloalkyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said C₃-C₅-cycloalkyl and said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from methyl and trifluoromethyl;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl and (C₃-C₄-cycloalkyl)-(methyl)-,
- said C₃-C₄-cycloalkyl and said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group;
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (methoxy)-(C₁-C₃-alkyl)-, C₃-C₅-cycloalkyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said C₃-C₅-cycloalkyl and said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, cyclopropyl and (cyclopropyl)-(methyl)-,
- said cyclopropyl and (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (C₃-C₅-cycloalkyl)-(methyl)-,
- said (C₃-C₅-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom, a chlorine atom or with a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₄-alkyl, C₂-C₄-fluoroalkyl and (C₃-C₄-cycloalkyl)-(methyl)-,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a chlorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₄-alkyl, C₂-C₄-fluoroalkyl and (cyclopropyl)-(methyl)-,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₄-fluoroalkyl and (C₃-C₄-cycloalkyl)-(methyl)-,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a chlorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₄-fluoroalkyl and (cyclopropyl)-(methyl)-,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₃-fluoroalkyl and (C₃-C₄-cycloalkyl)-(methyl)-,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a chlorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₃-fluoroalkyl and (cyclopropyl)-(methyl)-,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₄-fluoroalkyl and (C₃-C₄-cycloalkyl)-(methyl)-,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from C₂-C₄-fluoroalkyl and (cyclopropyl)-(methyl)-,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (C₃-C₄-cycloalkyl)-(methyl)- group,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a chlorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (cyclopropyl)-(methyl)- group,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (C₃-C₄-cycloalkyl)-(methyl)- group,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (cyclopropyl)-(methyl)- group,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times, identically or differently, with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl 2,2,2-trifluoroethyl and (cyclopropyl)-(methyl)-,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from ethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents an ethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a 2,2,2-trifluoroethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (cyclopropyl)-(methyl)- and (2,2-difluorocyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (cyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (2,2-difluorocyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from (C₃-C₄-cycloalkyl)-(methyl)- and C₂-C₄-fluoroalkyl,
- said (C₃-C₄-cycloalkyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a hydrogen atom or a group selected from (cyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)- and 2,2,2-trifluoroethyl,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (cyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)- and 2,2,2-trifluoroethyl,
- said (cyclopropyl)-(methyl)- group being optionally substituted one or two times with a fluorine atom or a methyl group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (2-methylcyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)- and 2,2,2-trifluoroethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (2-methylcyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (cyclobutyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl and 2,2,2-trifluoroethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from methyl, ethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dichlorocyclopropyl)-(methyl)- and (2,2-dimethylcyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (2-methylcyclopropyl)-(methyl)-, (1-methylcyclopropyl)-(methyl)- and (1-chlorocyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁸represents a group selected from (cyclopropyl)-(methyl)-, (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (cyclobutyl)-(methyl)-, 3,3-difluorocyclobutyl-(methyl)- and (cyclopentyl)-methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from 2,2-difluoroethyl, (cyclopropyl)-(methyl)-, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)-, (1-chlorocyclopropyl)-(methyl)- and (cyclobutyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a 2,2-difluoroethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (2,2-difluorocyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (2,2-dimethylcyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (1-chlorocyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a (cyclobutyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl)- and (1-chlorocyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from (2,2-difluorocyclopropyl)-(methyl)- and (2,2-dimethylcyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶represents a group selected from 2,2-difluoroethyl, (2,2-difluorocyclopropyl)-(methyl)-, (2,2-dimethylcyclopropyl)-(methyl),-(1-chlorocyclopropyl)-(methyl)- and (cyclobutyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₃-haloalkoxy)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₈-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, heterospirocycloalkyl, phenyl, heteroaryl, —CN, —(CH₂)—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³, —O—C(═O)—N(R¹¹)R^11a, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)—R¹³, —S(═O)₂—R¹³, —S(═O)₂—N(R¹)R^11aand —S(═O)(═NR¹⁷)R¹³,
- said C₃-C₈-cycloalkyl, said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)- and said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl,
- said 4- to 7-membered heterocycloalkyl, said 5- to 7-membered heterocycloalkenyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from oxo, C₁-C₃-alkyl and C₁-C₃-haloalkyl, and
said heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, trifluoromethyl, C₁-C₃-alkoxy and trifluoromethoxy, or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —(NR¹⁶—(CH₂)₃—O)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₃-haloalkoxy)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₈-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, heterospirocycloalkyl, phenyl, heteroaryl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R^11a, N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₈-cycloalkyl)-(C₁-C₆-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³, —O—C(═O)—N(R¹¹)R^11a, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)—R¹³, —S(═O)₂—R¹³, —S(═O)₂—N(R¹¹)R^11aand —S(═O)(═NR⁷)R¹³,
- said C₃-C₈-cycloalkyl, said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)- and said (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from C₁-C₃-alkyl and C₁-C₃-haloalkyl,
- said 4- to 7-membered heterocycloalkyl, said 5- to 7-membered heterocycloalkenyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or with a group selected from oxo, C₁-C₃-alkyl and C₁-C₃-haloalkyl, and
said heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, trifluoromethyl, C₁-C₃-alkoxy and trifluoromethoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —(NR¹⁸—(CH₂)₃—O)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₆-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, phenyl, heteroaryl, —CN, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R¹¹a, —N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³—O—C(═O)—N(R¹¹)R^11la, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)₂—R¹³, —S(═O)₂—N(R¹¹)R^11aand —S(═O)(═NR¹⁷)R¹³; or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH),
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, C₃-C₈-cycloalkyl, C₄-C₈-cycloalkenyl, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkyl)-, (phenyl)-C₁-C₃-alkyl-, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, phenyl, heteroaryl, —CN, —C(═O)R¹³, —C(═O)—OR¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—R¹³, —N(R¹⁶)—S(═O)₂—R¹³, —N(R¹⁶)—C(═O)—N(R¹¹)R^11a, —N(R¹⁶)—C(═O)—OR¹³, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, C₃-C₈-cycloalkoxy-, (C₃-C₈-cycloalkyl)-(C₁-C₃-alkoxy)-, phenyloxy-, heteroaryloxy-, —O—(CH₂)_x-phenyl, —O—(CH₂)_x-heteroaryl, —O—C(═O)—R¹³—O—C(═O)—N(R¹¹)R^11a, C₁-C₆-alkylsulfanyl, C₁-C₆-haloalkylsulfanyl, —S(═O)₂—R¹³, —S(═O)₂—N(R¹¹)R^11aand —S(═O)(═NR¹⁷)R¹³;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(S—(CH₂)₂)—, —(O—(CH₂)₃)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH);
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-fluoroalkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, 5- to 6-membered heteroaryl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)-, C₁-C₄-alkylsulfanyl, S(═O)—R¹³and —S(═O)₂—R¹³,
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from oxo, methyl and trifluoromethyl, and
- said 5- to 6-membered heteroaryl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from methyl, trifluoromethyl and methoxy, or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from hydroxy, C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-fluoroalkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, 5- to 6-membered heteroaryl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, —C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)-, C₁-C₄-alkylsulfanyl, S(═O)—R¹³and —S(═O)₂—R¹³
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from oxo, methyl and trifluoromethyl, and
- said 5- to 6-membered heteroaryl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from methyl, trifluoromethyl and methoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —(CH₂—O—CH₂)—, —(NR¹⁶—(CH₂)₂—O)—, —((CH₂)₃)—, —((CH₂)₄)—, —(O—CH═CH)—, —(S—CH═CH)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, —C(═O)—N(R^1′)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and C₁-C₄-alkylsulfanyl; or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —((CH₂)₃)—, —((CH₂)₄)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, —C(═O)—N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and C₁-C₄-alkylsulfanyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH₂—O)—, —(O—(CH₂)₂—O)—, —(O—(CH₂)₂)—, —((CH₂)₃)—, —((CH₂)₄)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-,
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, and
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, (phenyl)-(C₁-C₆-alkyl)-, 4- to 7-membered heterocycloalkyl, heterospirocycloalkyl, —CN, —(CH₂)_x—N(R¹¹)R^11a, —C(═O)R¹³, —C(═O)—N(R¹¹)R^11a, —N(R¹¹)R^11a, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-,
- said C₃-C₄-cycloalkyl, said (C₃-C₄-cycloalkyl)-(methyl)- and said (C₃-C₄-cycloalkyl)-(methoxy)- group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl, and
- said 4- to 7-membered heterocycloalkyl and said heterospirocycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and C₁-C₄-alkylsulfanyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-, or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, 2-oxa-6-azaspiro[3.3]heptyl-, —NR¹¹R^11a, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-, or
R⁶and R⁷, or two R⁷groups, when being attached to adjacent ring atoms of the group R¹, together form a group selected from:
- —(O—CH═CH)— and —(NR¹⁶—(CH₂)₂—O)—,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, difluoromethyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, 2-oxa-6-azaspiro[3.3]heptyl-, —NR¹¹R^11a, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and [1-(trifluoromethyl)cyclopropyl]-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₆-alkoxy, C₁-C₄-fluroalkoxy, (C₃-C₄-cycloalkyl)-(methoxy)- and C₁-C₄-alkylsulfanyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy, C₁-C₃-fluoroalkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, (methoxy)-(methyl)-, cyclopropyl, —NR¹¹R^11a, C₁-C₃-alkoxy and (C₃-C₄-cycloalkyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₆-alkoxy, C₁-C₄-fluoroalkoxy, and (C₃-C₄-cycloalkyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from
- C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₆-alkoxy, C₁-C₄-fluroalkoxy, and (C₃-C₄-cycloalkyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a halogen atom or a group selected from
- C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₄-alkoxy, C₁-C₄-fluoroalkoxy, and (C₃-C₄-cycloalkyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from
- C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₄-alkoxy, C₁-C₄-fluroalkoxy, and (C₃-C₄-cycloalkyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, C₁-C₄-alkoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from
- C₁-C₄-alkoxy, C₁-C₄-fluroalkoxy, and (C₃-C₄-cycloalkyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from
- C₁-C₆-alkyl, C₁-C₄-fluoroalkyl, (C₃-C₄-cycloalkyl)-(methyl)-, methoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from
- methoxy, C₁-C₄-fluroalkoxy, and (C₃-C₄-cycloalkyl)-(methoxy)-,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a —NR¹¹R^11agroup,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a C₁-C₄-fluroalkoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a C₁-C₃-fluroalkoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a fluorine atom or a group selected from C₁-C₅-alkyl, C₁-C₂-fluoroalkyl, cyclopropyl, benzyl, —C(═O)—N(R¹¹)R^11a, C₁-C₃-alkoxy, C₁-C₂-fluoroalkoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, trifluoromethyl, cyclopropyl, C₁-C₃-alkoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, trifluoromethyl, cyclopropyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, trifluoromethyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl and trifluoromethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, ethoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, ethoxy, 2,2,2-trifluoroethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, ethoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy and iso-propoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, ethoxy, 2,2,2-trifluoroethoxy and iso-propoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, ethoxy and iso-propoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a methoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from 2,2,2-trifluoroethoxy and 2,2-difluoropropoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a 2,2-difluoroprooxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a 2,2,2-trifluoroethoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents an ethoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents an iso-propoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a (cyclopropyl)-(methoxy)-group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a chlorine atom or a group selected from C₁-C₃-alkyl, cyclopropyl, dimethylamino, cyclopropylamino, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a chlorine atom or a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkyl, C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a chlorine atom or a group selected from C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from C₁-C₃-alkoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a chlorine atom or a group selected from methyl, methoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, methoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a chlorine atom or a group selected from methoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methoxy, 2,2,2-trifluoroethoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, trifluoromethyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, trifluoromethyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy, 2,2,2-trifluoroethoxy, 2,2-difluoropropoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, (methoxy)-(methyl)-, ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl, methoxy, ethoxy, iso-propoxy and (cyclopropyl)-(methoxy)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl, trifluoromethyl and (methoxy)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from methyl and (methoxy)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a (methoxy)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino, dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from ethylamino, isopropylamino, (cyclopropyl)-(methyl)-amino-, cyclopropylamino, cyclobutylamino,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a ethylamino group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a isopropylamino group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a (cyclopropyl)-(methyl)-amino- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a cyclopropylamino group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a cyclobutylamino group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from dimethylamino, azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a dimethylamino group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a group selected from azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl and morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a azetidin-1-yl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a 3,3-difluoroazetidin-1-yl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a 3-trifluoromethylazetidin-1-yl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a piperidin-1-yl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁷represents a morpholinyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁸represents a hydrogen atom or a group selected from methyl, ethyl, methoxy, ethoxy and dimethylamino,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁸represents a hydrogen atom or a group selected from methyl, ethyl, methoxy and ethoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁸represents a hydrogen atom or a group selected from methoxy and ethoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁸represents a hydrogen atom or a methoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁸represents a methoxy group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁹represents a hydrogen atom or a —CN or C₁-C₃-alkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁹represents a hydrogen atom or a C₁-C₃-alkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁹represents a hydrogen atom or a methyl or an ethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁹represents a hydrogen atom or a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁹represents a hydrogen atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R⁹represents a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14a, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one or two times, identically or differently, with a fluorine atom, chlorine atom or bromine atom, or a group selected from —CN, methyl, trifluoromethyl and methoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)OR¹³, —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14aand phenyl,
- said phenyl group being optionally substituted one or two times, identically or differently, with a fluorine atom, chlorine atom or bromine atom, or a group selected from —CN, methyl, trifluoromethyl and methoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵, —S(═O)₂N(R¹⁴)R^14aand 2-chlorophenyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a group selected from —C(═O)R¹², —C(═O)N(R¹⁴)R^14a, —S(═O)₂R¹⁵and —S(═O)₂N(R¹⁴)R^14a,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a group selected from —C(═O)R¹²and —C(═O)N(R¹⁴)R^14a,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a, —C(═O)N(R¹⁴)R^14agroup,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —S(═O)₂R¹⁵group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —S(═O)₂N(R¹⁴)R^14agroup,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl and (1-trifluoromethyl)-(cyclopropyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a group selected from 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl and 2,2-difluoro-1-methylcyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl and 2,2-difluoro-1-methylcyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a 2,2,2-trifluoroethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a cyclopropyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁰represents a —C(═O)R¹²group, and in which R¹²represents a (1-trifluoromethyl)-(cyclopropyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- and benzyl, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, —C(═O)R¹⁸, —C(═O)OR¹⁸and —S(═O)₂R¹⁸,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)- and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, —C(═O)R¹⁸, —C(═O)OR¹⁸and —S(═O)₂R¹⁸,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, —C(═O)R¹⁸, C(═O)OR¹⁸and S(═O)₂R¹⁸,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom, or a group selected from hydroxy, oxo, —CN, C₁-C₃-alkyl, —C(═O)R¹⁸, C(═O)OR¹⁸and S(═O)₂R¹⁸,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl,
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom, or a group selected from hydroxy, oxo, —CN, methyl, trifluoromethyl and methoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom, or a group selected from hydroxy, oxo, —CN, methyl, trifluoromethyl and methoxy,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group, said group being optionally substituted once with a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group, said group being optionally substituted once with a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₃-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, C₁-C₃-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₃-C₄-cycloalkyl)-(methyl)- and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a fluorine atom or with a group selected from methyl and trifluoromethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom or a trifluoromethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, 2,2,2-trifluoroethyl, C₃-C₄-cycloalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)- and (C₃-C₄-cycloalkyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a 4- to 6-membered heterocycloalkyl group, said group being optionally substituted one or two times with a fluorine atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3-fluoroazetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-,
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3-fluoroazetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from a hydrogen atom or a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3-fluoroazetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3-fluoroazetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, independently from each other, represent a hydrogen atom or a group selected from methyl, ethyl, 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-, or
R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3,3-difluoroazetidin-1-yl, 3-trifluoromethylazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹¹and R^11a, together with the nitrogen atom they are attached to, represent a group selected from azetidin-1-yl, 3,3-difluoroazetidin-1-yl, pyrrolidin-1-yl, piperidin-1-yl, morpholinyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl and C₁-C₃-haloalkyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a hydrogen atom or a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl and C₁-C₃-haloalkyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, C₂-C₆-alkenyl, C₂-C₆-alkynyl, 4- to 7-membered heterocycloalkyl, 5- to 7-membered heterocycloalkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₁-C₄-hydroxyalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)-, C₂-C₄-alkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from methyl, trifluormethyl and methoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from —CN, methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)-, C₂-C₄-alkenyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from methyl, trifluormethyl and methoxy,
- said C₃-C₆-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom, a chlorine atom or a group selected from —CN, methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)- and C₂-C₄-alkenyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-hydroxyalkyl, (methoxy)-(C₁-C₃-alkyl)-, C₃-C₄-cycloalkyl, (cyclopropyl)-(methyl)- and allyl,
- said C₃-C₄-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further particular embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a C₃-C₄-cycloalkyl group,
- said C₃-C₄-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further particular embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a cyclopropyl group,
- said cyclopropyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further particular embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl and 2,2-difluoro-1-methylcyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, (cyclopropyl)-(methyl)- and allyl,
- said C₃-C₄-cycloalkyl group being optionally substituted one, two or three times, identically or differently, with a fluorine atom or a group selected from methyl and trifluoromethyl,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₄-alkyl, C₁-C₃-fluoroalkyl, C₃-C₄-cycloalkyl, (cyclopropyl)-(methyl)- and allyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-, 2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from C₁-C₂-fluoroalkyl, C₃-C₄-cycloalkyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a C₁-C₂-fluoroalkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a C₃-C₄-cycloalkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a (cyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl, 2-hydroxyprop-2-yl, (2-methoxy)-(prop-2-yl)-, (1-trifluoromethyl)-(cyclopropyl)-2,2-difluorocyclopropyl, 2,2-difluoro-1-methylcyclopropyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl, (1-trifluoromethyl)-(cyclopropyl)- and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-;

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl and (1-trifluoromethyl)-(cyclopropyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a 2,2,2-trifluoroethyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a cyclopropyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a cyclobutyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a (1-trifluoromethyl)-(cyclopropyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a 2,2-difluorocyclopropyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a 2,2-difluoro-1-methylcyclopropyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹²represents a (cyclopropyl)-(methyl)- group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹³represents a group selected from C₁-C₄-alkyl and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹³represents a group selected from methyl, ethyl, tert-butyl and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹³represents a benzyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹³represents a C₁-C₄-alkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹³represents a group selected from methyl, ethyl and tert-butyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹³represents a tert-butyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl, or
R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom or a group selected from hydroxyl, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy and (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₃-C₆-cycloalkyl and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a halogen atom or a group selected from hydroxyl, —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy and (C₁-C₃-alkoxy)-(C₁-C₃-alkyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, trifluoromethyl and cyclopropyl, or
R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-alkoxy, trifluoromethoxy and (C₁-C₂-alkoxy)-(C₁-C₂-alkyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from C₁-C₃-alkyl, trifluoromethyl and cyclopropyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 4- to 7-membered heterocycloalkyl group, said group being optionally substituted one or two times, identically or differently, with a group selected from C₁-C₃-alkyl, C₁-C₃-fluoroalkyl, C₁-C₃-alkoxy, trifluoromethoxy and (C₁-C₂-alkoxy)-(C₁-C₂-alkyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl, or
R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted once with a group selected from methyl, methoxy and (methoxy)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, independently from each other, represent a hydrogen atom or a group selected from methyl and ethyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁴and R^14a, together with the nitrogen atom they are attached to, represent a 5- to 6-membered heterocycloalkyl group selected from pyrrolidinyl, piperidinyl and morpholinyl, said group being optionally substituted once with a group selected from methyl, methoxy and (methoxy)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁵represents a group selected from C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₁-C₆-hydroxyalkyl, (C₁-C₃-alkoxy)-(C₁-C₆-alkyl)-, (C₁-C₃-alkoxy)-(C₂-C₃-alkoxy)-(C₁-C₆-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₃-alkyl)-, 4- to 7-membered heterocycloalkyl, 5- to 6-membered heteroaryl and phenyl,
- said 5- to 6-membered heteroaryl group and said phenyl group being optionally substituted one, two or three times, identically or differently, with a halogen atom or a group selected from —CN, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy and C₁-C₃-haloalkoxy,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁵represents a group selected from C₁-C₄-alkyl, C₁-C₄-fluoroalkyl, (C₁-C₂-alkoxy)-(C₁-C₃-alkyl)-, (C₁-C₂-alkoxy)-(ethoxy)-(C₁-C₃-alkyl)-, C₃-C₆-cycloalkyl, (C₃-C₆-cycloalkyl)-(C₁-C₂-alkyl)- and 4- to 7-membered heterocycloalkyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁵represents a group selected from ethyl, 3,3,3-trifluoropropyl, (3-methoxy)-(propyl)-, (2′-methoxy)-(2-ethoxy)-(ethyl)-, cyclopropyl, cyclohexyl and tetrahydropyranyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁶represents a hydrogen atom or a group selected from C₁-C₄-alkyl and benzyl,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁶represents a hydrogen atom or a C₁-C₃-alkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁶represents a hydrogen atom or a C₁-C₂-alkyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁶represents a hydrogen atom or a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹⁶represents a hydrogen atom or a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

x represents an integer selected from 1, 2, 3 and 4,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

x represents an integer selected from 1 and 2,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

x represents an integer 1,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule, and
- R¹⁰represents a —C(═O)R¹²group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R⁹represents a methyl group, and

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule, and
- R¹⁰represents a —C(═O)R¹²group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,
- R³represents a hydrogen atom,
- R⁹represents a methyl group, and
- R¹⁰represents a —C(═O)R¹²group,
  
  and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom, and

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom,

R⁹represents a methyl group, and

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

R⁹represents a methyl group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

R¹⁰represents a —C(═O)R¹²group,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted further one or two times, differently or identically, with a R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

R¹⁰represents a —C(═O)R¹²group, in which R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers compounds of formula (I), supra, in which:

R¹represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule;
- the ring of said group being, besides R⁶, optionally substituted with one further R⁷group;

R²represents a group

embedded image

- in which “*” represents the point of attachment to the rest of the molecule,

R³represents a hydrogen atom,

R⁴represents a hydrogen atom,

R⁵represents a hydrogen atom, and

R¹⁰represents a —C(═O)R¹²group, in which R¹²represents a group selected from 2,2,2-trifluoroethyl, cyclopropyl, cyclobutyl and (cyclopropyl)-(methyl)-,

and stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, and mixtures of same.

In a particular further embodiment of the first aspect, the present invention covers combinations of two or more of the above mentioned embodiments under the heading “further embodiments of the first aspect of the present invention”.

The present invention covers any sub-combination within any embodiment or aspect of the present invention of compounds of general formula (I), supra.

The present invention covers any sub-combination within any embodiment or aspect of the present invention of intermediate compounds of general formula (XL).

The present invention covers the compounds of general formula (I) which are disclosed in the Example Section of this text, infra.

General Syntheses of Compounds of Formula (I)

The following paragraphs outline a variety of synthetic approaches suitable to prepare compounds of the general formula (I), and intermediates useful for their synthesis.

In addition to the routes described below, also other routes may be used to synthesise the compounds of the general formula (I), in accordance with common general knowledge of a person skilled in the art of organic synthesis. The order of transformations exemplified in the following schemes is therefore not intended to be limiting, and suitable synthesis steps from various schemes can be combined to form additional synthesis sequences. In addition, modification of any of the substituents, such as R¹, R², R³, R⁴or R⁵, or of substituents contained therein, such as R¹⁰in R², can be achieved before and/or after the exemplified transformations. These modifications can be such as the introduction of protective groups, cleavage of protective groups, reduction or oxidation of functional groups, halogenation, alkylation, acylation, sulfonylation, metallation, metal catalysed coupling reactions, exemplified by but not limited to Suzuki, Sonogashira, Negishi and Ullmann couplings, ester saponifications, amide coupling reactions, formation and cleavage of ethers, reductive aminations, hydrogenolyses e.g. of halogen atoms bonded to aromatic rings, Mitsunobu type reactions of an alcohol with a nucleophile in the presence of an dialkyl azodicarboxylate, such as DIAD (diisopropyl azodicarboxylate) and a tertiary phosphine, such as triphenylphosphine, and/or substitution or other reactions known to a person skilled in the art. These transformations include those which introduce a functionality allowing for further modification of substituents. Appropriate protective groups and their introduction and cleavage are well-known to a person skilled in the art (see for example T. W. Greene and P. G. M. Wuts in Protective Groups in Organic Synthesis, 4^thedition, Wiley 2006).

Compounds of formula (I), and the intermediates used in their synthesis, may be chiral, e.g. in case of R⁹being different from hydrogen, and may then be formed as mixtures of stereoisomers. Said mixtures of stereoisomers can be separated by methods well known the person skilled in the art, such as preparative chromatography, such as high pressure liquid chromatography (HPLC) or superfluid chromatography (SFC) using chiral stationary phases, which are commercially available in considerable variety. If compounds of formula (I), or intermediates used in their synthesis, are sufficiently basic or acidic, stereoisomeric mixtures, in particular mixtures of enantiomers, can be resolved using chiral, enantiomerically pure acids, such as tartaric acid and 2,3-bis(benzoyloxy)succinic acid, or chiral, enantiomerically pure amines, such as 1-phenylethylamine or strychnine, respectively, via the formation of diastereomeric salts which can be separated.

The general synthesis strategy to compounds of the general formula (I) is outlined in Scheme 1. As starting materials, diaminobenzene derivatives of formula (II), in which R³is as defined for the compounds of general formula (I) and X represents a group selected from a boronic acid, a boronic acid ester, a —CN group, a —C(═O)—O—R^Egroup, in which R^Erepresents a C₁-C₃-alkyl group, and a R¹group which is as defined for the compounds of general formula (I), and aminopyridine derivatives of formula (III), in which R⁴and R⁵are as defined for the compounds of general formula (I), and in which Y represents a group selected from —CH₂—O-PG¹, in which PG¹represents a protective group suitable for hydroxy groups, as present e.g. in alcohols, as defined supra, such as tert-butyl dimethylsilyl, a R²group, which is as defined for the compounds of general formula (I), and a G¹group, in which R⁹is as defined for the compounds of general formula (I), and in which “#” indicates that the piperazine ring may be either unsubstituted or bridged, or substituted with one or two methyl groups, according to the definition of R²in general formula (I), can be employed.

In a first key step, said aminopyridines of formula (III) can be reacted with di-1H-imidazol-1-ylmethanethione or thiophosgene, in the presence of a catalytic amount of 1H-imidazole, in a solvent such as dichloromethane, tetrahydrofuran, N,N-dimethylformamide or dioxane, followed by the addition of diaminobenzene derivatives of formula (II), to give thioureas of formulae (IV) and (IVa) as regioisomeric mixtures. Said thioureas of formulae (IV) and (IVa) can be, in a second key step, further converted into benzimidazole derivatives of formula (V) by reaction with a carbodiimide, such as N,N′-dipropan-2-ylcarbodiimide or 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, or a salt thereof, in an aliphatic chlorinated hydrocarbon, such as dichloromethane and chloroform, as a solvent. Noteworthily, regioisomeric mixtures of thioureas of formulae (IV) and (IVa) give rise to a homogeneous benzimidazole isomer as a result of imidazole tautomery.

embedded image

Dependent of the nature of the X and Y groups, compounds of formula (V) can either already constitute compounds of the general formula (I), or various synthetic intermediates thereof. More detailed synthesis routes to compounds of general formula (I) are given below, as outlined in the Schemes 2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 4 and 5.

Schemes 2a and 2d outline an approach to compounds of general formula (I), in which R¹can be introduced in a late step by means of the well-known Suzuki coupling, from nitroaniline derivatives of formula (VI), diaminobenzene derivatives of formula (VII), aminopyridine derivatives of formula (VIII), and piperazine derivatives of formula (IX).

embedded image

Nitroanilines of formula (VI), in which R³is as defined for compounds of general formula (I), and in which LG¹represents a leaving group, preferably chloride, bromide or iodide, can be converted, using methods well known to the person skilled in the art, e.g. by reacting with a suitable boron reagent, such as 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi-1,3,2-dioxaborolane, in the presence of a palladium catalyst, such as bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane adduct, to give boronic acid derivatives of formula (X).

Said boronic acid derivatives of formula (X) may be a boronic acid (R^B═—H) or an ester of the boronic acid, e.g. its isopropyl ester (R^B═C₁-C₄-alkyl, e.g. —CH(CH₃)₂), or an ester derived from a diol such as pinacol in which the boronic acid intermediate forms a cyclic boronic ester, such as a 4,4,5,5-tetramethyl-1,3,2-dioxaborolane (R^B—R^B═C₂-C₆-alkylene, e.g. —C(CH₃)₂—C(CH₃)₂—). Many boronic acids and their esters are commercially available and well-known to the person skilled in the art; see e.g. D. G. Hall, Boronic Acids, 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, ISBN 3-527-30991-8 and references cited therein. Subsequently, boronic acid derivatives of formula (X) can be reduced to the corresponding diamines of formula (XI) by methods well known to the person skilled in the art, e.g. by palladium catalysed hydrogenolysis.

In an analogous fashion as described supra for the conversion of compounds of formula (VI) into boronic acid derivatives of formula (X), diaminobenzene derivatives of formula (VII), in which R³is as defined for the compounds of general formula (I), and in which LG¹represents a leaving group, preferably chloride, bromide or iodide, can be converted into compounds of formula (XI) in one step. Preferably, dichloropalladium-tricyclohexylphosphane (1:2) is used as a catalyst in this Suzuki coupling reaction.

Further, aminopyridines of formula (VIII), in which R⁴, R⁵and R⁹are as defined for compounds of general formula (I), and in which LG²represents a leaving group, preferably chloride or bromide, can be reacted with piperazine derivatives of formula (IX), in which R¹⁰is as defined for compounds of general formula (I), and in which “#” indicates that the piperazine ring may be either unsubstituted or bridged, or substituted with one or two methyl groups, according to the definition of R²in general formula (I), to give intermediates of formula (XII). The aminopyridines of formula (VIII) may be employed as free bases or as salts; furthermore, their amino group can optionally be protected by a protective group which is removed on later stage. Suitable groups for protection of amines, e.g. the phthalimido group, and methods for their introduction and removal, are well known to the person skilled in the art, see e.g. T. W. Greene and P. G. M. Wuts in Protective Groups in Organic Synthesis, 4^thedition, Wiley 2006.

The reader is further referred to the fact that the definition of R¹⁰for compounds of general formula (I) includes some protective groups, such as tert-butoxycarbonyl, which may be cleaved off and replaced by another R¹⁰group at a later stage.

Starting materials of formulae (VI), (VII) (VIII) and (IX) are well known to the person skilled in the art and are commercially available in considerable variety, or can be prepared by well-known synthesis methods. Special reference is being made to protected aminopyridine derivatives of formula (XV), which are useful in particular for the preparation of compounds of general formula (I) and advanced intermediates thereof, in which R⁹is different from a hydrogen atom. They can be prepared according to Scheme 2b from aminopyridines of formula (XIII), in which R⁴, R⁵and R⁹are as described for the compounds of general formula (I) with the proviso that R⁹is different from a hydrogen atom, by reaction with benzene-1,2-dicarbonyl dichloride (also known as phthaloyl chloride) in the presence of a base, e.g. an aliphatic tertiary amine such as triethylamine, in an aliphatic halogenated hydrocarbon, such as dichloromethane, as a solvent, to give phthalimide derivatives of formula (XIV). Said phthalimide derivatives can subsequently be reacted with reagents suitable for the introduction of LG², such as N-halo succinimides, e.g. N-bromo succinimide, and a radical starter, such as 2,2′-(E)-diazene-1,2-diylbis(2-methylpropanenitrile) (also known as AIBN), to give compounds of formula (XV), in which R⁴, R⁵and R⁹are as described for the compounds of general formula (I) with the proviso that R⁹is different from hydrogen, and in which LG²represents a leaving group, preferably chloride or bromide.

embedded image

Diamines of formula (XIa), in which R³represents a C₁-C₄-alkoxy group, thus constituting a sub-compartment of formula (XI), can be advantageously approached using the modified approach shown below in Scheme 2c. Commercially available 2-bromo-5-nitrophenol (XVI) can be reacted with 1,1,1-tri-(C₁-C₃-alkyl)methylhydrazinium salts such as 1,1,1-trimethylhydrazinium iodide in the presence of a suitable base, such as an alkali alkoxide, such as sodium 2-methylbutan-2-olate, to give 2-amino-6-bromo-3-nitrophenol (XVII), which in turn can be reacted with a compound of formula R^A-LG³, in which R^Arepresents a C₁-C₄-alkyl group, and LG³represents a leaving group, preferably bromide or iodide, in the presence of a base such as sodium carbonate in a solvent such as acetonitrile or N,N-dimethylformamide, to yield a phenyl ether compound of formula (XVIII). Said aryl ether compounds of formula (XVIII) can be converted into the corresponding boronic acid derivatives of formula (XIX), which may be a boronic acid (R^B═—H) or an ester of the boronic acid, e.g. its isopropyl ester (R^B═C₁-C₄-alkyl, e.g. —CH(CH₃)₂), or an ester derived from a diol such as pinacol in which the boronic acid intermediate forms a cyclic boronic ester, such as a 4,4,5,5-tetramethyl-1,3,2-dioxaborolane (R^B—R^B═C₂-C₆-alkylene, e.g. —C(CH₃)₂—C(CH₃)₂—), in an analogous fashion as described supra for the conversion of compounds of formula (VI) into boronic acid derivatives of formula (X).

Subsequently, boronic acid derivatives of formula (XIX) can be reduced to the corresponding diamines of formula (XIa), in which R³represents —OR^A, i.e. C₁-C₄-alkoxy, by methods well known to the person skilled in the art, e.g. by palladium catalysed hydrogenolysis.

embedded image

As outlined in Scheme 2d, infra, compounds of formula (XIIa), formula (XIIa) being equivalent to formula (XII) in Scheme 2a, can be reacted with di-1H-imidazol-1-ylmethanethione or thiophosgene, in the presence of a catalytic amount of 1H-imidazole, in a solvent such as dichloromethane, tetrahydrofuran, N,N-dimethylformamide or dioxane, preferably dichloromethane, followed by the addition of diaminobenzene derivatives of formula (XI), to give thioureas of formulae (XX) and (XXa) as regioisomeric mixtures. Said thiourea derivatives can be further converted into benzimidazole derivatives of formula (XXI) by reaction with a carbodiimide of formula R^D1—N═C═N—R^D2(or a salt thereof), in which R^D1and R^D2represent, independently from each other, a C₁-C₄-alkyl group optionally substituted with one N,N-dimethylamino group, preferably R^D1being ethyl and R^D2being 3-N,N-dimethylaminopropyl, or both R^D1and R^D2being isopropyl, in a halogenated aliphatic hydrocarbon comprising 1, 2 or 3 carbon atoms and 1, 2, 3, 4, 5 or 6 halogen atoms, preferably chlorine atoms, as a solvent, particularly preferred solvents being dichloromethane and chloroform. As mentioned supra, regioisomeric mixtures of thioureas of formulae (XX) and (XXa) give rise to a homogeneous benzimidazole isomer as a result of imidazole tautomery. In a final step, the resulting benzimidazole derivatives of formula (XXI) can be reacted with compounds of formula (XXII), in which R¹is as defined for compounds of general formula (I), and in which LG⁴represents a leaving group, preferably chloride, bromide or iodide, in a Suzuki coupling to give compounds of general formula (I). Specific examples are described in the Experimental Section.

embedded image

Said Suzuki coupling reaction is catalysed by palladium catalysts, e.g. by Pd(O) catalysts such as tetrakis(triphenylphosphine)palladium(0) [Pd(PPh₃)₄], tris(dibenzylideneacetone)di-palladium(0) [Pd₂(dba)₃], or by Pd(II) catalysts such as dichlorobis(triphenylphosphine)-palladium(II) [Pd(PPh₃)₂Cl₂], dichloropalladium—tricyclohexylphosphane (1:2) and palladium(II) acetate in combination with triphenylphosphine or by [1,1′-bis(diphenylphosphino)ferrocene]palladium dichloride, in free form [Pd(dppf)Cl₂] or as dichloromethane adduct [Pd(dppf)C₂×CH₂Cl₂]. Preferred is the use of dichlorobis(triphenylphosphine)-palladium(II) [Pd(PPh₃)₂Cl₂] in combination with triphenylphosphine or the use of [1,1′-bis(diphenylphosphino)ferrocene]palladium dichloride dichloromethane adduct [Pd(dppf)Cl₂×CH₂Cl₂] as a catalyst.

The reaction is preferably carried out in a mixture of a solvent such as 1,2-dimethoxyethane, dioxane, DMF, THF, or n-propanol with water and in the presence of a base such as aqueous potassium carbonate, aqueous sodium bicarbonate or potassium phosphate.

The reaction is performed at temperatures ranging from room temperature (i.e. 20° C.) to the boiling point of the solvent. Further on, the reaction can be performed at temperatures above the boiling point using pressure tubes and a microwave oven. (review: D. G. Hall, Boronic Acids, 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, ISBN 3-527-30991-8 and references cited therein).

The reaction is preferably completed after 1 to 36 hours of reaction time.

Compounds of formula (XXII) are well known to the person skilled in the art and are commercially available in considerable variety, or can be prepared by well-known synthesis methods. For the preparation of less common compounds of formula (XXII), the reader is also referred to the methods described in the Experimental section, see e.g. the protocols describing the syntheses of Compounds 07.04. and 08.06.

In a somewhat related approach, certain R¹groups such as 1,2,4-oxadiazol-5-yl and 1,2,4-triazol-5-yl can be formed from acyclic precursor groups.

As shown in Scheme 2e, aminopyridine derivatives of formula (XXIV), in which R⁴, R⁵and R⁹are as defined for compounds of general formula (I), and in which PG¹represents a protective group suitable for hydroxy groups, as present e.g. in alcohols, as defined supra, such as tert-butyl dimethylsilyl, are reacted with di-1H-imidazol-1-ylmethanethione or thiophosgene, in the presence of a catalytic amount of 1H-imidazole, in dichloromethane as a solvent, followed by the addition of esters of 3,4-diaminobenzoic acid of formula (XXIII), in which R³is as defined for compounds of general formula (I), and in which R^Erepresents a C₁-C₃-alkyl group, to give thiourea derivatives of formulae (XXV) and (XXVa) as regioisomeric mixtures. Said thiourea derivatives can be further converted into benzimidazole derivatives of formula (XXVI) by reaction with a carbodiimide, such as N,N′-dipropan-2-ylcarbodiimide or 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, or a salt thereof, in an aliphatic chlorinated hydrocarbon such as dichloromethane or chloroform as a solvent. As mentioned supra, regioisomeric mixtures of thioureas of formulae (XXV) and (XXVa) give rise to a homogeneous benzimidazole isomer as a result of imidazole tautomery.

embedded image

The moiety —OPG¹present in formula (XXVI) is then converted into a group LG⁵, which is a leaving group as defined supra, preferably chloride, giving rise to compounds of formula (XXVII), by first cleaving off said protective group PG¹by a method known to the person skilled in the art, e.g. by treatment with tetra-n-butylammonium fluoride in case said PG¹is tert-butyl dimethylsilyl, followed by treatment e.g. with a halogenating agent such as thionyl chloride (SOCl₂), phosphoroxychloride (POCl₃), or phosphorus trichloride (PCl₃), or with a sulfonyl chloride such as methylsulfonyl chloride. In a similar fashion as discussed in context of Scheme 2a, supra, said compounds of formula (XXVII) can be reacted with piperazine derivatives of formula (IX), in which R¹⁰is as defined for compounds of general formula (I), and in which “#” indicates that the piperazine ring may be either unsubstituted or bridged, or substituted with one or two methyl groups, according to the definition of R²in general formula (I), to give intermediates of formula (XXVIII).

Starting materials of formulae (XXIII) and (XXIV) are well known to the person skilled in the art and can be purchased commercially in many cases, or can be prepared by known methods.

As shown in Scheme 2f, the further elaboration of compounds of formula (XXVIIIa), which is equivalent to formula (XXVIII) in Scheme 2e, commences with the hydrolytic cleavage of the carboxylic ester moiety present in formulae (XXVIII) and (XXVIIa), using methodology well known to the person skilled in the art, such as by treatment with an aqueous alkali hydroxide, such as lithium hydroxide, sodium hydroxide or potassium hydroxide, in a solvent such as methanol, ethanol or tetrahydrofuran, or a mixture thereof, at elevated temperature, preferably between 40° C. and 80 t, to give carboxylic acids of formula (XXIX). Said carboxylic acids of formula (XXIX) can be subsequently reacted with compounds of formula (XXX), in which R⁷is as defined for compounds of general formula (I), and in which Q represents —O— or —N(R⁶)—, in which, in turn, R⁶is as defined for compounds of general formula (I), in the presence of a suitable coupling agent, such as benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate (PyBOP), and a base, such as N,N′-diisopropyethylamine, to give intermediates of formula (XXXI). Cyclisation to compounds of formula (Ia), constituting a sub-compartment of general formula (I), can be accomplished by heating said compounds of formula (XXXI) in a mixture of an aliphatic alcohol of the formula C₁-C₄-alkyl-OH, such as n-propanol, and water, in the presence of an alkali acetate, such as sodium acetate or potassium acetate. Optionally, a carboxamide based solvent such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidin-2-one can be added as a co-solvent to enhance solubility of the reactants. Specific examples are described in the Experimental Section.

Compounds of formula (XXX) are well known to the person skilled in the art, and can be prepared using known methods, the reader is further referred to the protocols e.g. for the preparation of Compounds 18.01, 19.01, 20.01, and 42.02 in the Experimental Section.

In a similar fashion, R¹=1,2,4-oxadiazol-3-yl can be elaborated from a cyano group, see Examples 22.01 and 22.02 and the corresponding precursors, e.g. Compounds 22.06 and 22.07, in the Experimental Section.

In a similar fashion, R¹=1,3,4-oxadiazol-2-yl can be elaborated from a carboxy group, see e.g.

Compounds 126.01, 126.02 and 126.03, in the Experimental Section.

embedded image

In an alternative approach, the benzimidazole core in formula (I) is constructed on late stage. This synthesis route proceeds via diamines of formula (XXXIV), the synthesis of which is outlined in Scheme 3a, and which can be prepared from nitroaniline derivatives of formula (XXXIII) by methods well known to the person skilled in the art, such as catalytic hydrogenolysis, e.g. by reacting an ethanolic solution of compounds of formula (XXXIII) with an atmosphere of hydrogen in the presence of palladium on carbon. Alternatively, diamines of formula (XXXIV) can be prepared by a Suzuki coupling, as discussed supra, from compounds of formula (VII) in which R³is as defined for the compounds of general formula (I), and in which LG¹represents a leaving group, preferably chloride, bromide or iodide (see Scheme 2a). Said nitroaniline derivatives of formula (XXXIII) can also be prepared by a Suzuki coupling as discussed supra, either employing boronic acid derivatives of formula (XXXII) and nitroaniline derivatives of formula (VI), cf. protocols of Compounds 39.01, 39.02 and 39.03. in the Experimental section, or employing boronic acid derivatives of formula (X) and compounds of formula (XXII). In said compounds of formulae (VI), (X), (XXII) and (XXXII), R¹and R³are as defined for compounds of general formula (I), LG¹and LG⁴represent, independently from each other, a leaving group, preferably chloride, bromide or iodide, and R^Brepresents hydrogen, a C₁-C₄-alkyl group such as isopropyl, or R^B—R^Btogether form a C₂-C₆-alkylene group, such as a —C(CH₃)₂—C(CH₃)₂— group, giving rise e.g. to a 4,4,5,5-tetramethyl-1,3,2-dioxaborolane. The availability of compounds of formulae (VI), (VII), (X) and (XXII) is described supra; boronic acid derivatives of formula (XXXII) are well known to the person skilled in the art and are commercially available in considerable variety.

Diaminobenzene derivatives of formula (XXXIVa), constituting a sub-compartment of formula (XXXIV), can be prepared in one step from diaminobenzoate derivatives of formula (XXIII), in which R³is as defined for the compounds of general formula (I), and in which R^Erepresents C₁-C₃-alkyl, by reaction with a compound of formula (XXX) (see also Scheme 2f) in a solvent such as dioxane in the presence of a base such as cesium carbonate. Diaminobenzoate derivatives of formula (XXIII) are known to the person skilled in the art, and can be prepared by known methods and can be purchased commercially in certain cases.

embedded image

Within said synthesis routes to diamines of formula (XXXIV), R groups such as R⁶or R⁷groups, which constitute substituents of heteroaromatic R¹groups, can be modified as outlined in the initial paragraphs of this chapter. Instructive examples of such modifications can be readily found in the Experimental section, see e.g. the protocols of Compounds 36.01., 36.02., 36.03. and 36.04., for diamines of formula (XXXIV) in which R¹is a substituted pyrimidine, and e.g. the protocols of Compounds 39.01., 67.01., 68.01., 69.02., and 78.01., for diamines of formula (XXXIV) in which R¹is a pyrazole.

As shown below in Scheme 3b, diamines of formula (XXXIVb), in which R¹is as defined for the compounds of general formula (I), and in which R³represents a C₁-C₄-alkoxy group, said diamines constituting a further sub-compartment of formula (XXXIV), can be prepared advantageously in certain cases from aryl ether derivatives of formula (XVIII), in which R^Arepresents a C₁-C₄-alkyl group (see Scheme 2c), by means of Suzuki coupling as discussed supra, by reacting with boronic acid derivatives of formula (XXXII) resulting in intermediates of formula (XXXV) followed by reduction of the nitro group, e.g. by palladium catalysed hydrogenolysis, to give diamines of formula (XXXIVb).

embedded image

The further transformation of said diamine intermediates of formula (XXXIV) can be, as outlined in Scheme 3c, accomplished by reacting aminopyridines of formula (XIIa) (see Scheme 2d), in which R², R⁴and R⁵are as defined for compounds of general formula (I), with di-1H-imidazol-1-ylmethanethione or thiophosgene, in the presence of a catalytic amount of 1H-imidazole, in a solvent such as dichloromethane, tetrahydrofuran, N,N-dimethylformamide or dioxane, followed by the addition of diaminobenzene derivatives of formula (XXXIV), to give thioureas of formulae (XXXVI) and (XXXVIa) as regioisomeric mixture. Said thiourea derivatives can be further converted into compounds of general formula (I) by reaction with a carbodiimide of formula R^D1-N═C═N—R^D2(or a salt thereof), in which R^D1and R^D2represent, independently from each other, a C₁-C₄-alkyl group optionally substituted with one N,N-dimethylamino group, preferably R^D1being ethyl and R^D2being 3-N,N-dimethylaminopropyl, or both R^D1and R^D2being isopropyl, in a halogenated aliphatic hydrocarbon comprising 1, 2 or 3 carbon atoms and 1, 2, 3, 4, 5 or 6 halogen atoms, preferably chlorine atoms, as a solvent, particularly preferred solvents being dichloromethane and chloroform. As mentioned supra, regioisomeric mixtures of thioureas of formulae (XXXVI) and (XXXVIa) give rise to a homogeneous benzimidazole isomer as a result of imidazole tautomery. Specific examples are described in the Experimental Section.

embedded image

A third approach proceeds via late-stage elaboration of the R²moiety by attaching its piperazine pharmacophore, using nucleophilic substitution. As shown in Scheme 4, aminopyridine derivatives of formula (XXIV) (see also Scheme 2e), in which R⁴, R⁵and R⁹are as defined for compounds of general formula (I), and in which PG¹represents a protective group suitable for hydroxy groups, as present e.g. in alcohols, as defined supra, such as tert-butyl dimethylsilyl, can be reacted with di-1H-imidazol-1-ylmethanethione or thiophosgene, in the presence of a catalytic amount of 1H-imidazole, a solvent such as dichloromethane, tetrahydrofuran, N,N-dimethylformamide or dioxane, followed by the addition of diamine intermediates of formula (XXXIV) (see also Scheme 3a), in which R¹and R³are as defined for compounds of general formula (I), to give thiourea derivatives of formulae (XXXVII) and (XXXVIIIa) as regioisomeric mixtures. Said thiourea derivatives can be further converted into benzimidazole derivatives of formula (XXXVIII) by reaction with a carbodiimide, such as N,N′-dipropan-2-ylcarbodiimide or 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, or a salt thereof, in an aliphatic chlorinated hydrocarbon such as dichloromethane or chloroform as a solvent. As mentioned supra, regioisomeric mixtures of thioureas of formulae (XXXVII) and (XXXVIIa) give rise to a homogeneous benzimidazole isomer as a result of imidazole tautomery. The moiety —OPG¹present in formula (XXXVIII) is then converted into a group LG⁶, which is a leaving group as defined supra, preferably chloride or (methylsulfonyl)oxy, giving rise to compounds of formula (XXXIX), by first cleaving off said protective group PG¹by a method known to the person skilled in the art, e.g. by treatment with tetra-n-butylammonium fluoride in case said PG¹is tert-butyl dimethylsilyl, followed by treatment e.g. with a halogenating agent such as thionyl chloride (SOCl₂), phosphoroxychloride (POCl₃), or phosphorus trichloride (PCl₃), or with a sulfonyl chloride such as methylsulfonyl chloride. In a similar fashion as discussed in context of Schemes 2a and 2e, supra, said compounds of formula (XXXIX) can be reacted with piperazine derivatives of formula (IX), in which R¹⁰is as defined for compounds of general formula (I), and in which “#” indicates that the piperazine ring may be either unsubstituted or bridged, or substituted with one or two methyl groups, according to the definition of R²in general formula (I), to give compounds of formula (Ib), which is equivalent to general formula (I). Specific examples are described in the Experimental Section.

embedded image

The reader is referred to the fact that the definition of R¹⁰for compounds of general formula (I) includes some protective groups, such as tert-butoxycarbonyl, which may be cleaved off and replaced by another R¹⁰group at a later stage, thus particularly qualifying this synthesis route for late-stage diversification of R¹⁰, by e.g. acidic cleavage of said tert-butoxycarbonyl group, followed by reaction of the resulting free NH group with reagents (RG) suitable for the introduction of R¹⁰groups, such as R¹²—C(═O)OH, R¹²—C(═O)-LG⁷, R¹³O—C(═O)-LG⁷, R^14a(R¹⁴)N—C(═O)-LG⁷, R^14a(R¹⁴)N—S(═O)₂-LG⁷and R¹⁵—S(═O)₂-LG⁷, in which R¹², R¹³, R¹⁴, R^14aand R¹⁵are as defined for the compounds of general formula (I), and in which LG⁷represents a leaving group as defined supra, preferably chloride, using methods well known to the person skilled in the art and as broadly exemplified in the Experimental Section.

This sequence is also outlined in Scheme 5, according to which tert-butoxycarbonyl derivatives of formula (Ic), in which R¹, R³, R⁴, R⁵and R⁹are as defined for the compounds of general formula (I), and in which “#” indicates that the piperazine ring may be either unsubstituted or bridged, or substituted with one or two methyl groups, according to the definition of R²in general formula (I), rendering formula (Ic) yet another sub-set of general formula (I), can be converted into the corresponding monosubstituted piperazines of formula (XL), by treatment with a strong acid, preferably hydrochloric acid or trifluoroacetic acid. Said monosubstituted piperazines of formula (XL) can be formed as free bases or as salts, and can be reacted with one reagent selected from the group (RG) consisting of R¹²—C(═O)OH, R¹²—C(═O)-LG⁷, R¹³O—C(═O)-LG⁷, R^14a(R¹⁴)N—C(═O)-LG⁷, R^14a(R¹⁴)N—S(═O)₂-LG⁷and R¹⁵—S(═O)₂-LG⁷, in which R¹², R¹³, R¹⁴, R^14aand R¹⁵are as defined for the compounds of general formula (I), and in which LG⁷represents a leaving group as defined supra, preferably chloride, as described in the preceding paragraph. Said reagents are all well known to the person skilled in the art and are commercially available in considerable variety.

embedded image

Particularly, said free NH group can be subjected to a peptide coupling by reaction with a carboxylic acid of formula R¹²—C(═O)OH, in which R¹²is as defined for compounds of general formula (I), in the presence of a peptide coupling reagent, selected from HATU (0-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate), TBTU (O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate), PyBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate), or T3P (2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide), all of them being well known to the person skilled in the art and all of them being commercially available, in the presence of a base such as a tertiary aliphatic amine of the formula N(C₁-C₄-alkyl)₃, or sodium bicarbonate, in an appropriate solvent such as N,N-dimethylformamide, N,N-dimethylacetamide, dimethylsulfoxide or N-methyl pyrrolidin-2-one. Specific examples are described in the Experimental Section.

In accordance with a second aspect, the present invention covers methods of preparing compounds of general formula (I) as defined supra.

In one embodiment of the invention, said methods comprise the step of allowing an intermediate compound of general formula (XXI):

embedded image

in which R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, and in which R^B, which can be different or identical, represent a hydrogen atom or a C₁-C₄-alkyl group, or both R^Bgroups together form a C₂-C₆-alkylene group, to react with a compound of general formula (XXII):

R¹LG⁴ (XXII),

in which R¹is as defined for the compound of general formula (I) as defined supra, and in which LG⁴represents a leaving group,

in the presence of a palladium catalyst,

thereby giving a compound of general formula (I):

embedded image

in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra.

In another embodiment of the invention, said methods comprise the steps of

i. allowing an intermediate compound of general formula (XIIa):

embedded image

- in which R², R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a reagent selected from thiophosgene and di-1H-imidazol-1-ylmethanethione, in the presence of a catalytic amount of 1H-imidazole, followed by the addition of an intermediate compound of general formula (XXXIV):

embedded image

- in which R¹and R³are as defined for the compound of general formula (I) as defined supra,
- thereby giving a regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, followed by

ii. allowing said regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a carbodiimide of formula R^D1—N═C═N—R^D2, in which R^D1and R^D2represent, independently from each other, a C₁-C₄-alkyl group optionally substituted with one N,N-dimethylamino group,
  
  thereby giving a compound of general formula (I):

embedded image

in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra.

In another embodiment of the invention, said methods comprise the steps of

i. allowing an intermediate compound of general formula (XIIa):

embedded image

- in which R², R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a reagent selected from thiophosgene and di-1H-imidazol-1-ylmethanethione, in the presence of a catalytic amount of 1H-imidazole, followed by the addition of an intermediate compound of general formula (XXXIV):

embedded image

- in which R¹and R³are as defined for the compound of general formula (I) as defined supra,
- thereby giving a regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, followed by

ii. allowing said regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a carbodiimide of formula R^D1—N═C═N—R^D2or a salt thereof, in which R^D1and R^D2represent, independently from each other, a C₁-C₄-alkyl group optionally substituted with one N,N-dimethylamino group,
  
  thereby giving a compound of general formula (I):

embedded image

in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra.

In another embodiment of the invention, said methods comprise the step of allowing an intermediate compound of general formula (XL) or a salt thereof:

to react with one reagent selected from the group (RG) consisting of R¹²—C(═O)OH, R¹²—C(═O)-LG⁷, R¹³O—C(═O)-LG⁷, R^14a(R¹⁴)N—C(═O)-LG⁷, R^14a(R¹⁴)N—S(═O)₂-LG⁷and R¹⁵—S(═O)₂-LG⁷, in which R¹², R¹³, R¹⁴, R^14aand R¹⁵are as defined for the compounds of general formula (I) as defined supra, and in which LG⁷represents a leaving group,

thereby giving a compound of general formula (I):

embedded image

in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra.

In accordance with a third aspect, the present invention covers further methods of preparing compounds of general formula (I) as defined supra.

In one embodiment of the invention, said methods comprise the step of allowing an intermediate compound of general formula (XXI):

embedded image

in which R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, and in which R^B, which can be different or identical, represent a hydrogen atom or a C₁-C₄-alkyl group, or both R^Bgroups together form a C₂-C₆-alkylene group, to react with a compound of general formula (XXII):

R¹-LG⁴ (XXII),

in which R¹is as defined for the compound of general formula (I) as defined supra, and in which LG⁴represents a leaving group,

in the presence of a palladium catalyst,

thereby giving a compound of general formula (I):

embedded image

in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,

then optionally converting said compound into solvates, salts and/or solvates of such salts using the corresponding (i) solvents and/or (ii) bases or acids.

In another embodiment of the invention, said methods comprise the steps of

i. allowing an intermediate compound of general formula (XIIa):

embedded image

- in which R², R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a reagent selected from thiophosgene and di-1H-imidazol-1-ylmethanethione, in the presence of a catalytic amount of 1H-imidazole, followed by the addition of an intermediate compound of general formula (XXXIV):

embedded image

- in which R¹and R³are as defined for the compound of general formula (I) as defined supra,
- thereby giving a regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, followed by

ii. allowing said regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a carbodiimide of formula R^D1—N═C═N—R^D2, in which R^D1and R^D2represent, independently from each other, a C₁-C₄-alkyl group optionally substituted with one N,N-dimethylamino group,
  
  thereby giving a compound of general formula (I):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- then optionally converting said compound into solvates, salts and/or solvates of such salts using the corresponding (i) solvents and/or (ii) bases or acids.

In another embodiment of the invention, said methods comprise the steps of

i. allowing an intermediate compound of general formula (XIIa):

embedded image

- in which R², R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a reagent selected from thiophosgene and di-1H-imidazol-1-ylmethanethione, in the presence of a catalytic amount of 1H-imidazole, followed by the addition of an intermediate compound of general formula (XXXIV):

embedded image

- in which R¹and R³are as defined for the compound of general formula (I) as defined supra,
- thereby giving a regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, followed by

ii. allowing said regioisomeric mixture of intermediates of formulae (XXXVI) and (XXXVIa):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- to react with a carbodiimide of formula R^D1—N═C═N—R^D2or a salt thereof, in which R^D1and R^D2represent, independently from each other, a C₁-C₄-alkyl group optionally substituted with one N,N-dimethylamino group,
  
  thereby giving a compound of general formula (I):

embedded image

- in which R¹, R², R³, R⁴and R⁵are as defined for the compound of general formula (I) as defined supra,
- then optionally converting said compound into solvates, salts and/or solvates of such salts using the corresponding (i) solvents and/or (ii) bases or acids.

In another embodiment of the invention, said methods comprise the step of allowing an intermediate compound of general formula (XL) or a salt thereof:

embedded image

in which R¹, R³, R⁴, R⁵and R⁹are as defined for the compound of general formula (I) as defined supra, and in which “#” indicates that the piperazine ring can be either unsubstituted or bridged, or substituted with one or two methyl groups, according to the definition of R²in general formula (I) as defined supra,

to react with one reagent selected from the group (RG) consisting of R¹²—C(═O)OH, R¹²—C(═O)-LG⁷, R¹³O—C(═O)-LG⁷, R^14a(R¹⁴)N—C(═O)-LG⁷, R^14a(R¹⁴)N—S(═O)₂-LG⁷and R¹⁵—S(═O)₂-LG⁷, in which R¹², R¹³, R¹⁴, R^14aand R¹⁵are as defined for the compounds of general formula (I) as defined supra, and in which LG⁷represents a leaving group,

thereby giving a compound of general formula (I):

The present invention covers methods of preparing compounds of the present invention of general formula (I), said methods comprising the steps as described in the Experimental Section herein.

In accordance with a fourth aspect, the present invention covers intermediate compounds which are useful for the preparation of the compounds of general formula (I), supra.

In one embodiment, the invention covers the intermediate compounds of general formula (XXI):

In another embodiment, the invention covers the intermediate compounds of general formula (XIIa):

embedded image

in which R², R⁴and R⁵are as defined for the compound of general formula (I) as defined supra.

In another embodiment, the invention covers the intermediate compounds of general formula (XXXIV):

embedded image

in which R¹and R³are as defined for the compound of general formula (I) as defined supra.

In another embodiment, the invention covers the intermediate compounds of general formula (XL):

In accordance with a fifth aspect, the present invention covers the use of said intermediate compounds for the preparation of a compound of general formula (I) as defined supra.

In one embodiment, the invention covers the use of intermediate compounds of general formula (XXI):

In another embodiment, the invention covers the use of intermediate compounds of general formula (XIIa):

embedded image

in which R², R⁴and R⁵are as defined for the compound of general formula (I) as defined supra, for the preparation of a compound of general formula (I) as defined supra.

In another embodiment, the invention covers the use of intermediate compounds of general formula (XXXIV):

embedded image

in which R¹and R³are as defined for the compound of general formula (I) as defined supra, for the preparation of a compound of general formula (I) as defined supra.

In another embodiment, the invention covers the use of intermediate compounds of general formula (XL):

The present invention covers the intermediate compounds which are disclosed in the Example Section of this text, infra.

The present invention covers any sub-combination within any embodiment or aspect of the present invention of intermediate compounds of general formula (XL), supra.

The compounds of general formula (I) of the present invention can be converted to any salt, preferably pharmaceutically acceptable salts, as described herein, by any method which is known to the person skilled in the art. Similarly, any salt of a compound of general formula (I) of the present invention can be converted into the free compound, by any method which is known to the person skilled in the art.

Compounds of general formula (I) of the present invention demonstrate a valuable pharmacological spectrum of action which could not have been predicted. Compounds of the present invention have surprisingly been found to effectively inhibit TBK1 kinase and/or IKKε kinase and it is possible therefore that said compounds be used for the treatment or prophylaxis of diseases, preferably hyperproliferative and/or inflammatory disorders in humans and animals.

Compounds of the present invention can be utilized to inhibit the activity of TBK1 and/or IKKε kinases. This method comprises administering to a mammal in need thereof, including a human, an amount of a compound of general formula (I) of the present invention, or a pharmaceutically acceptable salt, isomer, polymorph, metabolite, hydrate, solvate or ester thereof, which is effective to treat hyperproliferative and/or inflammatory disorders.

Hyperproliferative disorders include, but are not limited to, for example: psoriasis, keloids, and other hyperplasias affecting the skin, benign prostate hyperplasia (BPH), solid tumours, such as cancers of the breast, respiratory tract, brain, reproductive organs, digestive tract, urinary tract, eye, liver, skin, head and neck, thyroid, parathyroid and their distant metastases. Those disorders also include lymphomas, sarcomas, and leukaemias.

Examples of breast cancers include, but are not limited to, invasive ductal carcinoma, invasive lobular carcinoma, ductal carcinoma in situ, and lobular carcinoma in situ.

Examples of cancers of the respiratory tract include, but are not limited to, small-cell and non-small-cell lung carcinoma, as well as bronchial adenoma and pleuropulmonary blastoma.

Examples of brain cancers include, but are not limited to, brain stem and hypophtalmic glioma, cerebellar and cerebral astrocytoma, medulloblastoma, ependymoma, as well as neuroectodermal and pineal tumour.

Tumours of the male reproductive organs include, but are not limited to, prostate and testicular cancer.

Tumours of the female reproductive organs include, but are not limited to, endometrial, cervical, ovarian, vaginal, and vulvar cancer, as well as sarcoma of the uterus.

Tumours of the digestive tract include, but are not limited to, anal, colon, colorectal, oesophageal, gallbladder, gastric, pancreatic, rectal, small-intestine, and salivary gland cancers.

Tumours of the urinary tract include, but are not limited to, bladder, penile, kidney, renal pelvis, ureter, urethral and human papillary renal cancers.

Eye cancers include, but are not limited to, intraocular melanoma and retinoblastoma.

Examples of liver cancers include, but are not limited to, hepatocellular carcinoma (liver cell carcinomas with or without fibrolamellar variant), cholangiocarcinoma (intrahepatic bile duct carcinoma), and mixed hepatocellular cholangiocarcinoma.

Skin cancers include, but are not limited to, squamous cell carcinoma, Kaposi's sarcoma, malignant melanoma, Merkel cell skin cancer, and non-melanoma skin cancer.

Head-and-neck cancers include, but are not limited to, laryngeal, hypopharyngeal, nasopharyngeal, oropharyngeal cancer, lip and oral cavity cancer and squamous cell.

Lymphomas include, but are not limited to, AIDS-related lymphoma, non-Hodgkin's lymphoma, cutaneous T-cell lymphoma, Burkitt lymphoma, Hodgkin's disease, and lymphoma of the central nervous system.

Sarcomas include, but are not limited to, sarcoma of the soft tissue, osteosarcoma, malignant fibrous histiocytoma, lymphosarcoma, and rhabdomyosarcoma.

Leukemias include, but are not limited to, acute myeloid leukemia, acute lymphoblastic leukemia, chronic lymphocytic leukemia, chronic myelogenous leukemia, and hairy cell leukemia.

The present invention also provides methods of treating angiogenic disorders including diseases associated with excessive and/or abnormal angiogenesis.

Inappropriate and ectopic expression of angiogenesis can be deleterious to an organism. A number of pathological conditions are associated with the growth of extraneous blood vessels. These include, for example, diabetic retinopathy, ischemic retinal-vein occlusion, and retinopathy of prematurity [Aiello et al., New Engl. J. Med., 1994, 331, 1480; Peer et al., Lab. Invest., 1995, 72, 638], age-related macular degeneration (AMD) [Lopez et al., Invest. Opththalmol. Vis. Sci., 1996, 37, 855], neovascular glaucoma, psoriasis, retrolental fibroplasias, angiofibroma, inflammation, rheumatoid arthritis (RA), restenosis, in-stent restenosis, vascular graft restenosis, etc. In addition, the increased blood supply associated with cancerous and neoplastic tissue, encourages growth, leading to rapid tumour enlargement and metastasis. Moreover, the growth of new blood and lymph vessels in a tumour provides an escape route for renegade cells, encouraging metastasis and the consequence spread of the cancer. Thus, compounds of general formula (I) of the present invention can be utilized to treat and/or prevent any of the aforementioned angiogenesis disorders, for example by inhibiting and/or reducing blood vessel formation; by inhibiting, blocking, reducing, decreasing, etc. endothelial cell proliferation, or other types involved in angiogenesis, as well as causing cell death or apoptosis of such cell types.

In yet another aspect, the present invention provides methods of treating or preventing a disease or condition associated with inflammation, a metabolic disorder, infection or an immune disease or condition by administering to a subject having such a condition or disease, a therapeutically effective amount of a compound or composition of the invention. In one group of embodiments, diseases or conditions, including chronic diseases, of humans or other species can be treated or prevented by inhibition of IRF-3 phosphorylation through inhibition of TBK1 kinase and/or IKKε kinase. These diseases or conditions include (1) inflammatory or allergic diseases such as systemic anaphylaxis and hypersensitivity responses, drug allergies, insect sting allergies and food allergies, (2) inflammatory bowel diseases, such as Crohn's disease, ulcerative colitis, ileitis and enteritis, (3) vaginitis, (4) psoriasis and inflammatory dermatoses such as dermatitis, eczema, atopic dermatitis, allergic contact dermatitis and urticaria, (5) vasculitis, (6) spondyloarthropathies, (7) scleroderma, (8) asthma and respiratory allergic diseases such as allergic asthma, allergic rhinitis, allergic conjunctivitis, hypersensitivity lung diseases and the like, and (9) autoimmune diseases, such as arthritis (including rheumatoid and psoriatic), systemic lupus erythematosus, type I diabetes, glomerulonephritis and the like, (10) graft rejection (including allograft rejection and graft-v-host disease), (11) other diseases in which undesired inflammatory responses are to be inhibited, e.g., atherosclerosis, myositis, neurological disorders such as stroke, ischemic reperfusion injury, traumatic brain injury and closed-head injuries, neurodegenerative diseases (e.g., Parkinson's disease), multiple sclerosis, Alzheimer's disease, encephalitis, meningitis, osteoporosis, gout, hepatitis, nephritis, gall bladder disease, sepsis, sarcoidosis, conjunctivitis, otitis, chronic obstructive pulmonary disease, sinusitis and Behcet's syndrome; (12) metabolic disorders that are sensitive to inhibition of TNF or IL-1 signaling, such as obesity, type II diabetes, Syndrome X, insulin resistance, hyperglycemia, hyperuricemia, hyperinsulinemia, cachexia, hypercholesterolemia, hyperhpidemia, dyslipidemia, mixed dyslipidemia and hypertriglyceridemia, eating disorders, such as anorexia nervosa and bulimia, (13) infectious diseases, e.g., bacteremia and septic shock; (14) cardiovascular disorders, such as acute heart failure, hypotension, hypertension, angina pectoris, myocardial infarction, cardiomyopathy, congestive heart failure, atherosclerosis, coronary artery disease, restenosis and vascular stenosis; and (15) immune diseases or conditions.

These disorders have been well characterized in humans, but also exist with a similar etiology in other mammals, and can be treated by administering pharmaceutical compositions of the present invention.

The term “treating” or “treatment” as stated throughout this document is used conventionally, for example the management or care of a subject for the purpose of combating, alleviating, reducing, relieving, improving the condition of a disease or disorder, such as a carcinoma.

The compounds of the present invention can be used in particular in therapy and prevention, i.e. prophylaxis, of tumour growth and metastases, especially in solid tumours of all indications and stages with or without pre-treatment of the tumour growth.

Generally, the use of chemotherapeutic agents and/or anti-cancer agents in combination with a compound or pharmaceutical composition of the present invention will serve to:

yield better efficacy in reducing the growth of a tumour or even eliminate the tumour as compared to administration of either agent alone,

provide for the administration of lesser amounts of the administered chemotherapeutic agents,

provide for a chemotherapeutic treatment that is well tolerated in the patient with fewer deleterious pharmacological complications than observed with single agent chemotherapies and certain other combined therapies,

provide for treating a broader spectrum of different cancer types in mammals, especially humans,

provide for a higher response rate among treated patients,

provide for a longer survival time among treated patients compared to standard chemotherapy treatments,

provide a longer time for tumour progression, and/or

yield efficacy and tolerability results at least as good as those of the agents used alone, compared to known instances where other cancer agent combinations produce antagonistic effects.

In addition, the compounds of general formula (I) of the present invention can also be used in combination with radiotherapy and/or surgical intervention.

In a further embodiment of the present invention, the compounds of general formula (I) of the present invention may be used to sensitize a cell to radiation, i.e. treatment of a cell with a compound of the present invention prior to radiation treatment of the cell renders the cell more susceptible to DNA damage and cell death than the cell would be in the absence of any treatment with a compound of the present invention. In one aspect, the cell is treated with at least one compound of general formula (I) of the present invention.

Thus, the present invention also provides a method of killing a cell, wherein a cell is administered one or more compounds of the present invention in combination with conventional radiation therapy.

The present invention also provides a method of rendering a cell more susceptible to cell death, wherein the cell is treated with one or more compounds of general formula (I) of the present invention prior to the treatment of the cell to cause or induce cell death. In one aspect, after the cell is treated with one or more compounds of general formula (I) of the present invention, the cell is treated with at least one compound, or at least one method, or a combination thereof, in order to cause DNA damage for the purpose of inhibiting the function of the normal cell or killing the cell.

In other embodiments of the present invention, a cell is killed by treating the cell with at least one DNA damaging agent, i.e. after treating a cell with one or more compounds of general formula (I) of the present invention to sensitize the cell to cell death, the cell is treated with at least one DNA damaging agent to kill the cell. DNA damaging agents useful in the present invention include, but are not limited to, chemotherapeutic agents (e.g. cis platin), ionizing radiation (X-rays, ultraviolet radiation), carcinogenic agents, and mutagenic agents.

In other embodiments, a cell is killed by treating the cell with at least one method to cause or induce DNA damage. Such methods include, but are not limited to, activation of a cell signalling pathway that results in DNA damage when the pathway is activated, inhibiting of a cell signalling pathway that results in DNA damage when the pathway is inhibited, and inducing a biochemical change in a cell, wherein the change results in DNA damage. By way of a non-limiting example, a DNA repair pathway in a cell can be inhibited, thereby preventing the repair of DNA damage and resulting in an abnormal accumulation of DNA damage in a cell.

In one aspect of the invention, a compound of general formula (I) of the present invention is administered to a cell prior to the radiation or other induction of DNA damage in the cell. In another aspect of the invention, a compound of general formula (I) of the present invention is administered to a cell concomitantly with the radiation or other induction of DNA damage in the cell. In yet another aspect of the invention, a compound of general formula (I) of the present invention is administered to a cell immediately after radiation or other induction of DNA damage in the cell has begun.

In another aspect, the cell is in vitro. In another embodiment, the cell is in vivo.

The term “treating” or “treatment” as used in the present text is used conventionally, e.g., the management or care of a subject for the purpose of combating, alleviating, reducing, relieving, improving the condition of a disease or disorder, such as a carcinoma.

The compounds of the present invention can be used in particular in therapy and prevention, i.e. prophylaxis, of hyperproliferative and/or inflammatory disorders.

In accordance with a further aspect, the present invention covers compounds of general formula (I), as described supra, or stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, particularly pharmaceutically acceptable salts thereof, or mixtures of same, for use in the treatment or prophylaxis of diseases, in particular hyperproliferative and/or inflammatory disorders.

The pharmaceutical activity of the compounds according to the invention can be explained by their activity as inhibitors of TBK1 and/or IKKε kinase.

In accordance with a further aspect, the present invention covers the use of compounds of general formula (I), as described supra, or stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, particularly pharmaceutically acceptable salts thereof, or mixtures of same, for the treatment or prophylaxis of diseases, in particular hyperproliferative and/or inflammatory disorders, particularly cancer.

In accordance with a further aspect, the present invention covers the use of compounds of general formula (I), as described supra, or stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, particularly pharmaceutically acceptable salts thereof, or mixtures of same, in a method of treatment or prophylaxis of diseases, in particular hyperproliferative and/or inflammatory disorders, particularly cancer.

In accordance with a further aspect, the present invention covers use of a compound of general formula (I), as described supra, or stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, particularly pharmaceutically acceptable salts thereof, or mixtures of same, for the preparation of a pharmaceutical composition, preferably a medicament, for the prophylaxis or treatment of diseases, in particular hyperproliferative and/or inflammatory disorders, particularly cancer.

In accordance with a further aspect, the present invention covers a method of treatment or prophylaxis of diseases, in particular hyperproliferative and/or inflammatory disorders, particularly cancer, using an effective amount of a compound of general formula (I), as described supra, or stereoisomers, tautomers, N-oxides, hydrates, solvates, and salts thereof, particularly pharmaceutically acceptable salts thereof, or mixtures of same.

In accordance with a further aspect, the present invention covers a compound inhibiting TBK1 kinase and/or IKKε kinase, for the treatment of a hyperproliferative and/or inflammatory disease, such as cancer.

In accordance with a further aspect, the present invention covers a method for controlling the activity of TBK1 kinase and/or IKKε kinase in humans and animals by administering an effective amount of at least one compound of the general formula (I), as defined supra, or of a medicament comprising the same.

In accordance with a further aspect, the present invention covers a method for controlling the activity of IRF-3 phosphorylation in humans and animals by administering an effective amount of at least one compound of the general formula (I), as defined supra, or of a medicament comprising the same.

In accordance with a further aspect, the present invention covers a method for controlling a hyperproliferative and/or inflammatory disease, such as cancer, in humans and animals by administering an effective amount of at least one compound of the general formula (I), as defined supra, or of a medicament comprising the same.

In accordance with a further aspect, the present invention covers pharmaceutical compositions, in particular a medicament, comprising a compound of general formula (I), as described supra, or a stereoisomer, a tautomer, an N-oxide, a hydrate, a solvate, a salt thereof, particularly a pharmaceutically acceptable salt, or a mixture of same, and one or more excipients), in particular one or more pharmaceutically acceptable excipient(s). Conventional procedures for preparing such pharmaceutical compositions in appropriate dosage forms can be utilized.

The present invention furthermore covers pharmaceutical compositions, in particular medicaments, which comprise at least one compound according to the invention, conventionally together with one or more pharmaceutically suitable excipients, and to their use for the above mentioned purposes.

It is possible for the compounds according to the invention to have systemic and/or local activity. For this purpose, they can be administered in a suitable manner, such as, for example, via the oral, parenteral, pulmonary, nasal, sublingual, lingual, buccal, rectal, vaginal, dermal, transdermal, conjunctival, otic route or as an implant or stent.

For these administration routes, it is possible for the compounds according to the invention to be administered in suitable administration forms.

For oral administration, it is possible to formulate the compounds according to the invention to dosage forms known in the art that deliver the compounds of the invention rapidly and/or in a modified manner, such as, for example, tablets (uncoated or coated tablets, for example with enteric or controlled release coatings that dissolve with a delay or are insoluble), orally-disintegrating tablets, films/wafers, films/lyophylisates, capsules (for example hard or soft gelatine capsules), sugar-coated tablets, granules, pellets, powders, emulsions, suspensions, aerosols or solutions. It is possible to incorporate the compounds according to the invention in crystalline and/or amorphised and/or dissolved form into said dosage forms.

Parenteral administration can be effected with avoidance of an absorption step (for example intravenous, intraarterial, intracardial, intraspinal or intralumbal) or with inclusion of absorption (for example intramuscular, subcutaneous, intracutaneous, percutaneous or intraperitoneal).

Administration forms which are suitable for parenteral administration are, inter alia, preparations for injection and infusion in the form of solutions, suspensions, emulsions, lyophylisates or sterile powders.

Examples which are suitable for other administration routes are pharmaceutical forms for inhalation [inter alia powder inhalers, nebulizers], nasal drops, nasal solutions, nasal sprays; tablets/films/wafers/capsules for lingual, sublingual or buccal administration; suppositories; eye drops, eye ointments, eye baths, ocular inserts, ear drops, ear sprays, ear powders, ear-rinses, ear tampons; vaginal capsules, aqueous suspensions (lotions, mixturae agitandae), lipophilic suspensions, emulsions, ointments, creams, transdermal therapeutic systems (such as, for example, patches), milk, pastes, foams, dusting powders, implants or stents.

The compounds according to the invention can be incorporated into the stated administration forms. This can be effected in a manner known per se by mixing with pharmaceutically suitable excipients. Pharmaceutically suitable excipients include, inter alia,

- fillers and carriers (for example cellulose, microcrystalline cellulose (such as, for example, Avicel®), lactose, mannitol, starch, calcium phosphate (such as, for example, Di-Cafos®)),
- ointment bases (for example petroleum jelly, paraffins, triglycerides, waxes, wool wax, wool wax alcohols, lanolin, hydrophilic ointment, polyethylene glycols),
- bases for suppositories (for example polyethylene glycols, cacao butter, hard fat),
- solvents (for example water, ethanol, isopropanol, glycerol, propylene glycol, medium chain-length triglycerides fatty oils, liquid polyethylene glycols, paraffins),
- surfactants, emulsifiers, dispersants or wetters (for example sodium dodecyl sulfate), lecithin, phospholipids, fatty alcohols (such as, for example, Lanette®), sorbitan fatty acid esters (such as, for example, Span®), polyoxyethylene sorbitan fatty acid esters (such as, for example, Tween®), polyoxyethylene fatty acid glycerides (such as, for example, Cremophor®), polyoxethylene fatty acid esters, polyoxyethylene fatty alcohol ethers, glycerol fatty acid esters, poloxamers (such as, for example, Pluronic®),
- buffers, acids and bases (for example phosphates, carbonates, citric acid, acetic acid, hydrochloric acid, sodium hydroxide solution, ammonium carbonate, trometamol, triethanolamine),
- isotonicity agents (for example glucose, sodium chloride),
- adsorbents (for example highly-disperse silicas),
- viscosity-increasing agents, gel formers, thickeners and/or binders (for example polyvinylpyrrolidone, methylcellulose, hydroxypropylmethylcellulose, hydroxypropyl-cellulose, carboxymethylcellulose-sodium, starch, carbomers, polyacrylic acids (such as, for example, Carbopol®); alginates, gelatine),
- disintegrants (for example modified starch, carboxymethylcellulose-sodium, sodium starch glycolate (such as, for example, Explotab®), cross-linked polyvinylpyrrolidone, croscarmellose-sodium (such as, for example, AcDiSol®)),
- flow regulators, lubricants, glidants and mould release agents (for example magnesium stearate, stearic acid, talc, highly-disperse silicas (such as, for example, Aerosil®)),
- coating materials (for example sugar, shellac) and film formers for films or diffusion membranes which dissolve rapidly or in a modified manner (for example polyvinylpyrrolidones (such as, for example, Kollidon®), polyvinyl alcohol, hydroxypropylmethylcellulose, hydroxypropylcellulose, ethylcellulose, hydroxypropylmethylcellulose phthalate, cellulose acetate, cellulose acetate phthalate, polyacrylates, polymethacrylates such as, for example, Eudragit®)),
- capsule materials (for example gelatine, hydroxypropylmethylcellulose),
- synthetic polymers (for example polylactides, polyglycolides, polyacrylates, polymethacrylates (such as, for example, Eudragit®), polyvinylpyrrolidones (such as, for example, Kollidon®), polyvinyl alcohols, polyvinyl acetates, polyethylene oxides, polyethylene glycols and their copolymers and blockcopolymers),
- plasticizers (for example polyethylene glycols, propylene glycol, glycerol, triacetine, triacetyl citrate, dibutyl phthalate),
- penetration enhancers,
- stabilisers (for example antioxidants such as, for example, ascorbic acid, ascorbyl palmitate, sodium ascorbate, butylhydroxyanisole, butylhydroxytoluene, propyl gallate),
- preservatives (for example parabens, sorbic acid, thiomersal, benzalkonium chloride, chlorhexidine acetate, sodium benzoate),
- colourants (for example inorganic pigments such as, for example, iron oxides, titanium dioxide),
- flavourings, sweeteners, flavour- and/or odour-masking agents.

The present invention furthermore relates to a pharmaceutical composition which comprise at least one compound according to the invention, conventionally together with one or more pharmaceutically suitable excipient(s), and to their use according to the present invention.

In accordance with another aspect, the present invention covers pharmaceutical combinations, in particular medicaments, comprising at least one compound of general formula (I) of the present invention and at least one or more further active ingredients, in particular for the treatment and/or prophylaxis of a hyperproliferative disorder, particularly cancer.

Particularly, the present invention covers a pharmaceutical combination, which comprises:

- one or more first active ingredients, in particular compounds of general formula (I) as defined supra, and
- one or more further active ingredients, in particular for the treatment and/or prophylaxis of a hyperproliferative disorder, more particularly cancer.

The term “combination” in the present invention is used as known to persons skilled in the art, it being possible for said combination to be a fixed combination, a non-fixed combination or a kit-of-parts.

A “fixed combination” in the present invention is used as known to persons skilled in the art and is defined as a combination wherein, for example, a first active ingredient, such as one or more compounds of general formula (I) of the present invention, and a further active ingredient are present together in one unit dosage or in one single entity. One example of a “fixed combination” is a pharmaceutical composition wherein a first active ingredient and a further active ingredient are present in admixture for simultaneous administration, such as in a formulation. Another example of a “fixed combination” is a pharmaceutical combination wherein a first active ingredient and a further active ingredient are present in one unit without being in admixture.

A non-fixed combination or “kit-of-parts” in the present invention is used as known to persons skilled in the art and is defined as a combination wherein a first active ingredient and a further active ingredient are present in more than one unit. One example of a non-fixed combination or kit-of-parts is a combination wherein the first active ingredient and the further active ingredient are present separately. It is possible for the components of the non-fixed combination or kit-of-parts to be administered separately, sequentially, simultaneously, concurrently or chronologically staggered.

The compounds of the present invention can be administered as the sole pharmaceutical agent or in combination with one or more other pharmaceutically active ingredients where the combination causes no unacceptable adverse effects. The present invention also covers such pharmaceutical combinations. For example, the compounds of the present invention can be combined with known agents for the treatment and/or prophylaxis of cancer.

Examples of agents for the treatment and/or prophylaxis of cancer include: 131I-chTNT, abarelix, abiraterone, aclarubicin, ado-trastuzumab emtansine, afatinib, aflibercept, aldesleukin, alemtuzumab, Alendronic acid, alitretinoin, altretamine, amifostine, aminoglutethimide, Hexyl aminolevulinate, amrubicin, amsacrine, anastrozole, ancestim, anethole dithiolethione, angiotensin II, antithrombin III, aprepitant, arcitumomab, arglabin, arsenic trioxide, asparaginase, axitinib, azacitidine, basiliximab, belotecan, bendamustine, belinostat, bevacizumab, bexarotene, bicalutamide, bisantrene, bleomycin, bortezomib, buserelin, bosutinib, brentuximab vedotin, busulfan, cabazitaxel, cabozantinib, calcium folinate, calcium levofolinate, capecitabine, capromab, carboplatin, carfilzomib, carmofur, carmustine, catumaxomab, celecoxib, celmoleukin, ceritinib, cetuximab, chlorambucil, chlormadinone, chlormethine, cidofovir, cinacalcet, cisplatin, cladribine, clodronic acid, clofarabine, copanlisib, crisantaspase, cyclophosphamide, cyproterone, cytarabine, dacarbazine, dactinomycin, darbepoetin alfa, dabrafenib, dasatinib, daunorubicin, decitabine, degarelix, denileukin diftitox, denosumab, depreotide, deslorelin, dexrazoxane, dibrospidium chloride, dianhydrogalactitol, diclofenac, docetaxel, dolasetron, doxifluridine, doxorubicin, doxorubicin+estrone, dronabinol, eculizumab, edrecolomab, elliptinium acetate, eltrombopag, endostatin, enocitabine, enzalutamide, epirubicin, epitiostanol, epoetin alfa, epoetin beta, epoetin zeta, eptaplatin, eribulin, erlotinib, esomeprazole, estradiol, estramustine, etoposide, everolimus, exemestane, fadrozole, fentanyl, filgrastim, fluoxymesterone, floxuridine, fludarabine, fluorouracil, flutamide, folinic acid, formestane, fosaprepitant, fotemustine, fulvestrant, gadobutrol, gadoteridol, gadoteric acid meglumine, gadoversetamide, gadoxetic acid, gallium nitrate, ganirelix, gefitinib, gemcitabine, gemtuzumab, Glucarpidase, glutoxim, GM-CSF, goserelin, granisetron, granulocyte colony stimulating factor, histamine dihydrochloride, histrelin, hydroxycarbamide, I-125 seeds, lansoprazole, ibandronic acid, ibritumomab tiuxetan, ibrutinib, idarubicin, ifosfamide, imatinib, imiquimod, improsulfan, indisetron, incadronic acid, ingenol mebutate, interferon alfa, interferon beta, interferon gamma, iobitridol, iobenguane (123I), iomeprol, ipilimumab, irinotecan, Itraconazole, ixabepilone, lanreotide, lapatinib, lasocholine, lenalidomide, lenograstim, lentinan, letrozole, leuprorelin, levamisole, levonorgestrel, levothyroxine sodium, lisuride, lobaplatin, lomustine, lonidamine, masoprocol, medroxyprogesterone, megestrol, melarsoprol, melphalan, mepitiostane, mercaptopurine, mesna, methadone, methotrexate, methoxsalen, methylaminolevulinate, methylprednisolone, methyltestosterone, metirosine, mifamurtide, miltefosine, miriplatin, mitobronitol, mitoguazone, mitolactol, mitomycin, mitotane, mitoxantrone, mogamulizumab, molgramostim, mopidamol, morphine hydrochloride, morphine sulfate, nabilone, nabiximols, nafarelin, naloxone+pentazocine, naltrexone, nartograstim, nedaplatin, nelarabine, neridronic acid, nivolumabpentetreotide, nilotinib, nilutamide, nimorazole, nimotuzumab, nimustine, nitracrine, nivolumab, obinutuzumab, octreotide, ofatumumab, omacetaxine mepesuccinate, omeprazole, ondansetron, oprelvekin, orgotein, orilotimod, oxaliplatin, oxycodone, oxymetholone, ozogamicine, p53 gene therapy, paclitaxel, palifermin, palladium-103 seed, palonosetron, pamidronic acid, panitumumab, pantoprazole, pazopanib, pegaspargase, PEG-epoetin beta (methoxy PEG-epoetin beta), pembrolizumab, pegfilgrastim, peginterferon alfa-2b, pemetrexed, pentazocine, pentostatin, peplomycin, Perflubutane, perfosfamide, Pertuzumab, picibanil, pilocarpine, pirarubicin, pixantrone, plerixafor, plicamycin, poliglusam, polyestradiol phosphate, polyvinylpyrrolidone+sodium hyaluronate, polysaccharide-K, pomalidomide, ponatinib, porfimer sodium, pralatrexate, prednimustine, prednisone, procarbazine, procodazole, propranolol, quinagolide, rabeprazole, racotumomab, radium-223 chloride, radotinib, raloxifene, raltitrexed, ramosetron, ramucirumab, ranimustine, rasburicase, razoxane, refametinib, regorafenib, risedronic acid, rhenium-186 etidronate, rituximab, romidepsin, romiplostim, romurtide, roniciclib, samarium (153Sm) lexidronam, sargramostim, satumomab, secretin, sipuleucel-T, sizofiran, sobuzoxane, sodium glycididazole, sorafenib, stanozolol, streptozocin, sunitinib, talaporfin, tamibarotene, tamoxifen, tapentadol, tasonermin, teceleukin, technetium (99mTc) nofetumomab merpentan, 99mTc-HYNIC-[Tyr3]-octreotide, tegafur, tegafur+gimeracil+oteracil, temoporfin, temozolomide, temsirolimus, teniposide, testosterone, tetrofosmin, thalidomide, thiotepa, thymalfasin, thyrotropin alfa, tioguanine, tocilizumab, topotecan, toremifene, tositumomab, trabectedin, tramadol, trastuzumab, trastuzumab emtansine, treosulfan, tretinoin, trifluridine+tipiracil, trilostane, triptorelin, trametinib, trofosfamide, thrombopoietin, tryptophan, ubenimex, valatinib, valrubicin, vandetanib, vapreotide, vemurafenib, vinblastine, vincristine, vindesine, vinflunine, vinorelbine, vismodegib, vorinostat, vorozole, yttrium-90 glass microspheres, zinostatin, zinostatin stimalamer, zoledronic acid, zorubicin.

Based upon standard laboratory techniques known to evaluate compounds useful for the treatment of hyperproliferative and/or inflammatory disorders, by standard toxicity tests and by standard pharmacological assays for the determination of treatment of the conditions identified above in mammals, and by comparison of these results with the results of known active ingredients or medicaments that are used to treat these conditions, the effective dosage of the compounds of the present invention can readily be determined for treatment of each desired indication. The amount of the active ingredient to be administered in the treatment of one of these conditions can vary widely according to such considerations as the particular compound and dosage unit employed, the mode of administration, the period of treatment, the age and sex of the patient treated, and the nature and extent of the condition treated.

The total amount of the active ingredient to be administered will generally range from about 0.001 mg/kg to about 200 mg/kg body weight per day, and preferably from about 0.01 mg/kg to about 20 mg/kg body weight per day. Clinically useful dosing schedules will range from one to three times a day dosing to once every four weeks dosing. In addition, it is possible for “drug holidays”, in which a patient is not dosed with a drug for a certain period of time, to be beneficial to the overall balance between pharmacological effect and tolerability. It is possible for a unit dosage to contain from about 0.5 mg to about 1500 mg of active ingredient, and can be administered one or more times per day or less than once a day. The average daily dosage for administration by injection, including intravenous, intramuscular, subcutaneous and parenteral injections, and use of infusion techniques will preferably be from 0.01 to 200 mg/kg of total body weight. The average daily rectal dosage regimen will preferably be from 0.01 to 200 mg/kg of total body weight. The average daily vaginal dosage regimen will preferably be from 0.01 to 200 mg/kg of total body weight. The average daily topical dosage regimen will preferably be from 0.1 to 200 mg administered between one to four times daily. The transdermal concentration will preferably be that required to maintain a daily dose of from 0.01 to 200 mg/kg. The average daily inhalation dosage regimen will preferably be from 0.01 to 100 mg/kg of total body weight.

Of course the specific initial and continuing dosage regimen for each patient will vary according to the nature and severity of the condition as determined by the attending diagnostician, the activity of the specific compound employed, the age and general condition of the patient, time of administration, route of administration, rate of excretion of the drug, drug combinations, and the like. The desired mode of treatment and number of doses of a compound of the present invention or a pharmaceutically acceptable salt or ester or composition thereof can be ascertained by those skilled in the art using conventional treatment tests.

EXPERIMENTAL SECTION
Experimental Section—General Part

The following Table 1 lists the abbreviations used herein, in particular in the Compounds part and the Examples part of the Experimental Section:

TABLE 1

Abbreviation
Meaning

Ac
Acetyl

AIBN
2,2′-(E)-diazene-1,2-diylbis(2-methylpropanenitrile)

BINAP
2,2′-bis(diphenylphosphino)-1,1′-binaphthyl

Boc
tert-butyloxycarbonyl

br
Broad

Brett-Phos
2-(dicyclohexylphosphino)-3,6-dimethoxy-2′-4′-6′-tri-i-propyl-1,1′-

biphenyl

c-
cyclo-

1-Chloroethyl
1-chloroethyl carbonochloridate

chloroformate

Chloromethyl
chloromethyl carbonochloridate

chloroformate

d
doublet

dd
doublet of doublets

DCM
dichloromethane

DME
1,2-dimethoxyethane

DIPE
diisopropylether

DIPEA
N,N-diisopropylethylamine

DMA
N,N-dimethylacetamide

DMF
N,N-dimethylformamide

DIC
Diisopropyl carbodiimide

DMSO
dimethyl sulfoxide

Dppf
1,1′-bis(diphenylphosphino)ferrocene

EDC, EDCI
N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride

Eq
equivalent

ESI
electrospray ionisation

HATU
N-[(dimethylamino)(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yloxy)-

methylene]-N-methylmethanaminium hexafluorophosphate

Hünig Base
N,N-diisopropylethylamine

m
multiplet

m.p.
melting point in ° C.

MS
mass spectrometry

MW
molecular weight

NaOtBu
sodium tert-butoxide; sodium 2-methylpropan-2-olate

NBS
2-bromo-1H-isoindole-1,3(2H)-dione

NMM
N-Methyl morpholine

NMP
N-methylpyrrolidinone

NMR
nuclear magnetic resonance spectroscopy: chemical shifts (δ) are

given in ppm.

PdCl₂(PPh₃)₂
dichlorobis(triphenylphosphine)palladium(II)

Pd(dba)₂
bis-(dibenzylideneacetone)palladium(0) complex

Pd₂(dba)₃
tris-(dibenzylideneacetone)dipalladium(0) chloroform complex

Pd(dppf)Cl₂
dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)

Pd(dppf)Cl₂•CH₂Cl₂
dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)

dichloromethane adduct

Pd-Brett-Phos-
chloro[2-(dicyclohexylphosphino)-3,6-dimethoxy-2′-4′-6′-tri-iso-

pre-cat
propyl-1,1′-biphenyl][2-(2-aminoethyl)phenyl]palladium(II)

Pd-tBu-X-Phos-
chloro(2-di-tert-butylphosphino-2′,4′,6′-tri-isopropyl-1,1′-biphenyl)

pre-cat
[2-(2-aminoethyl)phenyl] palladium(II)

Pd-X-Phos-pre-cat
chloro(2-dicyclohexylphosphino-2′,4′,6′-tri-isopropyl-1,1′-biphenyl)

[2-(2-aminoethyl)phenyl] palladium(II) methyl-tert-butylether adduct

PPh₃
triphenylphosphine

P(oTo1)₃
tri-o-tolylphosphine

PyBOP
benzotriazol-1-yl-oxytripyrrolidinophosphonium

hexafluorophosphate

q
quartet

quin
quintett

Rac
racemic

r.t.
room temperature

R_t
retention time in minutes

s
singlet

S-Phos
dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine

t
triplet

T3P
2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide

TBAF
tetrabutylammoniumfluoride

tBu-X-Phos
2-di-tert-butylphosphino-2′,4′,6′-tri-isopropyl-1,1′-biphenyl

TBDPS
tert-butyldiphenylsilyl

TBTU
N-[(1H-benzotriazol-1-yloxy)(dimethylamino)methylene]-N-

methylmethanaminium tetrafluoroborate

TEA
triethylamine

TCDI
di-1H-imidazol-1-ylmethanethione (Thiocarbonyldiimidazole)

TFA
trifluoroacetic acid

THF
tetrahydrofuran

TMS
trimethylsilyl

Ts
para toluenesulfonyl; (tosyl)

UPLC
ultra performance liquid chromatography

X-Phos
2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl

Xantphos
4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene;

CAS RN: 161265-03-8

All reagents, for which the synthesis is not described in the experimental part, are either commercially available, or are known compounds or may be formed from known compounds by known methods by a person skilled in the art.

Wherever specified, NMR peak multiplicities and peak forms are stated as they appear in the spectra. Possible higher order effects have not been considered.

The ¹H-NMR data of selected compounds and examples are listed in the form of ¹H-NMR peaklists. For each signal peak the δ value in ppm is given, followed by the signal intensity, reported in round brackets. The δ value-signal intensity pairs from different peaks are separated by commas. Therefore, a peaklist is described by the general form: δ₁(intensity₁), δ₂(intensity₂), . . . δ_i(intensity_i), . . . , δ_n(intensity_n).

The intensity of a sharp signal correlates with the height (in cm) of the signal in a printed NMR spectrum. When compared with other signals, this data can be correlated to the real ratios of the signal intensities. In the case of broad signals, more than one peak, or the center of the signal along with their relative intensity, compared to the most intense signal displayed in the spectrum, are shown. A ¹H-NMR peaklist is similar to a classical ¹H-NMR readout, and thus usually contains all the peaks listed in a classical NMR interpretation. Moreover, similar to classical ¹H-NMR printouts, peaklists can show solvent signals, signals derived from stereoisomers of target compounds (also the subject of the invention), and/or peaks of impurities. The peaks of stereoisomers, and/or peaks of impurities are typically displayed with a lower intensity compared to the peaks of the target compounds (e.g., with a purity of >90%). Such stereoisomers and/or impurities may be typical for the particular manufacturing process, and therefore their peaks may help to identify the reproduction of our manufacturing process on the basis of “by-product fingerprints”. An expert who calculates the peaks of the target compounds by known methods (MestReC, ACD simulation, or by use of empirically evaluated expectation values), can isolate the peaks of target compounds as required, optionally using additional intensity filters. Such an operation would be similar to peak-picking in classical ¹H-NMR interpretation. A detailed description of the reporting of NMR data in the form of peaklists can be found in the publication “Citation of NMR Peaklist Data within Patent Applications” (cf. Research Disclosure Database Number 605005, 2014, 1 Aug. 2014, or http://www.researchdisclosure.com/searching-disclosures). In the peak picking routine, as described in the Research. Disclosure Database Number 605005, the parameter “MinimumHeight” can be adjusted between 1% and 4%. Depending on the chemical structure and/or depending on the concentration of the measured compound it may be reasonable to set the parameter “MinimumHeight”<1%.

The examples and compounds produced according to the methods of the invention may require purification. Purification of organic compounds is well known to the person skilled in the art and there may be several ways of purifying the same compound. In some cases, no purification may be necessary. In some cases, the examples and compounds may be purified by crystallisation. In some cases, impurities may be removed by trituration using a suitable solvent or solvent mixture. In some cases, the examples and compounds may be purified by chromatography, particularly flash chromatography, using for example pre-packed silica gel cartridges, e.g. Isolute® Flash silica gel (Separtis) or SNAP cartridges KP-Sil® (Biotage) for purifications referred to herein as “silicagel chromatography”; or using e.g. Isolute® Flash NH₂silica gel (Separtis) or SNAP cartridges KP-NH® (Biotage), for purifications referred to herein as “aminophase silicagel chromatography”, said cartridges being used in combination with a suitable chromatographic system such as a Flashmaster II (Separtis) or an Isolera® system (Biotage) and eluents such as, for example, gradients of hexane/ethyl acetate or DCM/methanol. In some cases, the examples and compounds may be purified by preparative HPLC using standard commercial HPLC equipment, such as a Waters autopurifier equipped with a diode array detector and/or on-line electrospray ionisation mass spectrometer in combination with a suitable pre-packed reverse phase column, and eluants such as, for example, gradients of water and acetonitrile which may contain additives such as trifluoroacetic acid, formic acid or aqueous ammonia.

In some cases, purification methods as described above can provide those compounds of the present invention which possess a sufficiently basic or acidic functionality in the form of a salt, such as, in the case of a compound of the present invention which is sufficiently basic, a trifluoroacetate or formate salt for example, or, in the case of a compound of the present invention which is sufficiently acidic, an ammonium salt for example. A salt of this type can either be transformed into its free base or free acid form, respectively, by various methods known to the person skilled in the art, or be used as salts in subsequent biological assays. It is to be understood that the specific form (e.g. salt, free base etc.) of a compound of the present invention as isolated and as described herein is not necessarily the only form in which said compound can be applied to a biological assay in order to quantify the specific biological activity.

Chemical names were generated using the ACD/Name software from ACD/Labs. In some cases generally accepted names of commercially available reagents were used in place of ACD/Name generated names.

Optical rotations were measured using a JASCO P2000 Polarimeter. Typical, a solution of the compound with a concentration of 1 mg/mL to 15 mg/mL was used for the measurement. The specific rotation [α]_Dwas calculated according to the following formula:

$[α] D = \frac{\propto}{β \times d}$

In this equation, a is the measured rotation in degrees; d is the path length in decimetres and 3 is the concentration in g/mL.

UPLC-MS Standard Procedures

Analytical UPLC-MS was performed as described below.

Method 1:

Instrument: Waters Acquity UPLCMS SingleQuad; Column: Acquity UPLC BEH C18 1.7 μm, 50×2.1 mm; eluent A: water+0.1 vol % formic acid (99%), eluent B: acetonitrile; gradient: 0-1.6 min 1-99% B, 1.6-2.0 min 99% B; flow 0.8 mL/min; temperature: 60° C.; DAD scan: 210-400 nm.

Method 2:

Instrument: Waters Acquity UPLCMS SingleQuad; Column: Acquity UPLC BEH C18 1.7 μm, 50×2.1 mm; eluent A: water+0.2 vol % aqueous ammonia (32%), eluent B: acetonitrile; gradient: 0-1.6 min 1-99% B, 1.6-2.0 min 99% B; flow 0.8 mL/min; temperature: 60° C.; DAD scan: 210-400 nm.

Method 3:

Instrument: Waters Acquity UPLCMS SingleQuad; Column: Acquity UPLC BEH C18 1.7 50×2.1 mm; eluent A: water+0.1 vol % formic acid (99%), eluent B: acetonitrile; gradient: 0-1.6 min 1-99% B, 1.6-2.0 min 99% B; flow 0.8 mL/min; temperature: 60° C.; DAD scan: 210-400 nm.

Method 4:

Instrument: Waters Acquity UPLCMS SingleQuad; Column: Acquity UPLC BEH C18 1.7 50×2.1 mm; eluent A: water+0.2 vol % aqueous ammonia (32%), eluent B: acetonitrile; gradient: 0-1.6 min 1-99% B, 1.6-2.0 min 99% B; flow 0.8 mL/min; temperature: 60° C.; DAD scan: 210-400 nm.

Method 5:

column: Ascentis Express C18, 2.7 μm, 3 cm×2.1 mm

column temp.: 30° C.

injection volume: 1 μl

detection: MM-ES+APCI+DAD (254 nm)

fragment.potential: 50 V

mass range: 80-800 m/z

mobile phase A: water/0.1% formic acid

mobile phase B: methanol/0.1% formic acid

system time delay: 0.2 min

Gradient:

time

flow rate

in min
% A
% B
in mL/min

1.0
95
5
0.8

4.0
0
100
0.8

5.0
0
100
0.8

6.0
95
5
0.8

6.5
95
5
0.8

Method 6:

Instrument: Waters Acquity UPLCMS SingleQuad; Column: Chiralpak IF 3μ 100×4.6; solvent: 20-50% EtOH/Hexan; buffer: +0.1% DEA; gradient: S6_20_ethanol hexane DEA; solution: 1 mg/mL, flow 1.4 mL/min; DAD scan: 254 nm; run time: 10 min.; injection volume: 5.0 μL.

Method 7:

Instrument MS: Waters ZQ; Instrument HPLC: Waters UPLC Acquity; Column: Acquity BEH C18 (Waters), 50 mm×2.1 mm, 1.7 μm; eluent A: water+0.1 vol % formic acid, eluent B: acetonitrile (Lichrosolv Merck); gradient: 0.0 min 99% A—1.6 min 1% A—1.8 min 1% A—1.81 min 99% A—2.0 min 99% A; temperature: 60° C.; flow: 0.8 mL/min; UV-Detection PDA 210-400 nm.

Experimental Section—Description of Compounds
Compound 01.01
4-(bromomethyl)pyridin-2-amine hydrobromide

embedded image

A mixture of (2-aminopyridin-4-yl)methanol (5.00 g, 40.3 mmol) and aqueous hydrobromic acid (50 mL, c=. 48%, 440 mmol) was heated at 100° C. for 24 hours. The mixture was cooled to room temperature and concentrated under reduced pressure. Ethyl acetate was added to the crude product and the resulting solid was filtered, washed with ethyl acetate and dried under reduced pressure to give 7.70 g (71%) of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=0.68 min; MS (ESIpos): m/z=186; 188 [M+H]⁺.

¹H-NMR (400 MHz, d₆-DMSO): δ [ppm]=8.10 (brs, 2H), 7.90 (d, J=6.9 Hz, 1H), 6.98 (s, 1H), 6.84 (dd, J=1.8 and 6.9 Hz, 1H), 4.65 (s, 2H).

Compound 01.02
tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred suspension of 4-(bromomethyl)pyridin-2-amine hydrobromide (9.90 g, 36.9 mmol) in acetonitrile (75 mL) was added potassium carbonate (15.6 g, 113 mmol) and tert-butyl piperazine-1-carboxylate (7.50 g, 40.3 mmol). The mixture was stirred at 75° C. for 2 h. Direct silicagel chromatography of the reaction mixture gave 10.3 g (95% yield) of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=293 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.386 (16.00), 1.392 (3.05), 2.278 (0.86), 2.291 (1.25), 2.303 (0.96), 5.815 (1.05), 6.383 (0.87), 6.385 (0.70), 6.407 (0.54), 6.419 (0.52), 7.802 (0.68), 7.815 (0.66), 7.817 (0.66).

Compound 01.03
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine

embedded image

To a solution of 4-bromobenzene-1,2-diamine (25.3 g, 135 mmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi-1,3,2-dioxaborolane (42.9 g, 169 mmol) in dioxane (120 mL) was added potassium acetate (19.9 g, 203 mmol), the mixture was purged with Argon, dichloropalladium-tricyclohexylphosphane (1:2) (5.00 g, 6.77 mmol) was added and the mixture was stirred at 100° C. for 5 h. Diethyl ether was added and the mixture was filtered through celite and the solvent was removed in vacuum. Silicagel chromatography gave 21.7 g (65% yield) of the title compound.

LC-MS (METHOD 5): R_t=2.49 min; MS (ESIpos): m/z=235 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.077 (8.15), 1.161 (4.45), 1.176 (0.50), 1.231 (16.00), 1.988 (0.71), 6.457 (1.17), 6.476 (1.28), 6.765 (0.68), 6.768 (0.71), 6.784 (0.57), 6.787 (0.63), 6.889 (1.18), 6.892 (1.12).

Compound 01.04
tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of di-1H-imidazol-1-ylmethanethione (2.14 g, 12.0 mmol) and imidazole (159 mg, 2.34 mmol) in dichloromethane (30 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (3.18 g, 10.9 mmol), dissolved in dichloromethane (30 mL), at 0° C. The mixture was stirred at 0° C. for 4 h. 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (2.55 g, 10.9 mmol), dissolved in dichloromethane (20 mL), was added and the mixture was stirred at r.t. for 18 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (magnesium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (2.6 mL, 17 mmol) was added and the mixture was stirred at 40° C. for 24 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with diethyl ether to give 2.22 g (38% yield) of the title compound.

LC-MS (Method 5): R_t=3.30 min; MS (ESIpos): m/z=535[M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.086 (0.41), 1.171 (0.44), 1.299 (16.00), 1.392 (15.47), 1.984 (0.91), 2.336 (1.27), 2.348 (1.85), 2.360 (1.33), 2.495 (0.68), 2.499 (0.91), 2.504 (0.68), 3.320 (3.52), 3.342 (1.92), 3.368 (0.48), 3.481 (2.17), 6.901 (0.63), 6.914 (0.66), 8.235 (0.89), 8.248 (0.89).

Compound 01.05
6-(2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(2-methyl pyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (388 mg, 777 μmol) in dichloromethane (10 mL) and methanol (1.6 mL) was added HCl in dioxane (2.9 mL, 4.0 M, 12 mmol). The mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 326 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.92 min; MS (ESIneg): m/z=398 [M−H]⁺.

Compound 02.01
4-(2-methoxypyridin-4-yl)-2-nitroaniline

embedded image

To a stirred solution of 4-bromo-2-nitroaniline (3.00 g, 13.8 mmol) in 1-propanol (130 mL) was added potassium carbonate solution (21 mL, 2.0 M, 41 mmol), (2-methoxypyridin-4-yl)boronic acid (4.23 g, 27.6 mmol), triphenylphosphine (181 mg, 691 μmol) and PdCl₂(PPh₃)₂(485 mg, 691 μmol). The mixture was heated to reflux for 2 h, the solvent was removed in vacuum, water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with warm ethanol to give 2.20 g (65% yield) of the title compound.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=246 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.309 (16.00), 3.903 (0.89), 5.752 (0.76), 7.058 (6.56), 7.062 (7.47), 7.119 (7.28), 7.141 (7.58), 7.271 (4.73), 7.275 (4.50), 7.285 (4.72), 7.289 (4.72), 7.666 (8.49), 7.862 (3.74), 7.867 (3.82), 7.884 (3.49), 7.889 (3.62), 8.169 (6.51), 8.183 (6.28), 8.339 (7.41), 8.345 (7.24).

Compound 02.02
4-(2-methoxypyridin-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(2-methoxypyridin-4-yl)-2-nitroaniline (2.20 g, 8.97 mmol) in ethanol (30 mL) was added Raney Nickel (53 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 144 h. The mixture was filtered, and the solution was concentrated in vacuum to give 1.90 g (98% yield) mg of the title compound as crude product, that was used for the next step without purification.

LC-MS (Method 2): R_t=0.83 min; MS (ESIpos): m/z=216 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.334 (5.14), 4.828 (8.22), 5.752 (5.73), 6.587 (8.30), 6.844 (16.00), 6.947 (10.92), 7.103 (11.29), 7.683 (0.89), 8.070 (9.76).

Compound 02.03
6-(2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (575 mg, 1.12 mmol) Compound 02.03 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 540 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.07 min; MS (ESIneg): m/z=414 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.162 (8.02), 3.442 (1.95), 3.561 (16.00), 3.934 (15.50), 4.507 (2.69), 5.751 (2.51), 7.135 (2.88), 7.139 (2.96), 7.333 (1.77), 7.336 (1.71), 7.346 (1.74), 7.350 (1.75), 7.591 (2.75), 7.648 (1.24), 7.661 (1.38), 7.786 (6.74), 7.788 (6.71), 8.021 (2.19), 8.024 (3.45), 8.027 (2.12), 8.272 (2.66), 8.286 (2.55), 8.560 (2.19), 8.574 (2.06), 9.976 (0.86).

Compound 03.01
4-(5-fluoro-2-methoxypyridin-4-yl)-2-nitroaniline

embedded image

Starting with 4-bromo-2-nitroaniline (3.00 g, 13.5 mmol) and (5-fluoro-2-methoxypyridin-4-yl)boronic acid (2.55 g, 14.9 mmol), Compound 03.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.70 g (48%) of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=264 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 3.319 (16.00), 7.024 (1.93), 7.038 (1.89), 7.126 (1.91), 7.148 (1.99), 7.724 (0.87), 7.730 (1.58), 7.734 (2.38), 7.747 (0.85), 7.752 (0.85), 8.201 (1.92), 8.209 (1.93), 8.300 (1.24), 8.302 (1.31), 8.306 (1.29), 8.308 (1.14).

Compound 03.02
4-(5-fluoro-2-methoxypyridin-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(5-fluoro-2-methoxypyridin-4-yl)-2-nitroaniline (1.70 g, 6.46 mmol) in ethanol (200 mL) and dichloromethane (70 mL) was added palladium on carbon (10% w/w palladium) (344 mg, 323 μmol) and the mixture was stirred at r.t. in a hydrogen atmosphere for 14 h. The mixture was filtered through aminophase silicagel, and the solution was concentrated in vacuum to give 1.50 g (100% yield) of the title compound as crude product, that was used for the next step without purification.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=234 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.037 (0.99), 1.054 (2.00), 1.071 (1.74), 1.089 (2.01), 1.106 (0.86), 3.321 (16.00), 3.371 (0.86), 3.389 (0.95), 3.424 (0.47), 3.436 (0.48), 3.454 (0.42), 4.344 (0.63), 4.628 (2.93), 4.920 (3.66), 6.573 (2.89), 6.593 (3.49), 6.744 (0.88), 6.749 (1.52), 6.754 (0.97), 6.764 (0.78), 6.769 (1.65), 6.772 (3.61), 6.786 (3.01), 6.859 (1.59), 6.863 (2.64), 6.868 (1.43), 7.546 (0.79), 7.549 (0.71), 7.554 (0.65), 7.557 (0.65), 7.564 (0.94), 7.566 (0.71), 7.572 (0.68), 7.597 (1.01), 7.614 (0.92), 7.622 (0.90), 7.626 (1.33), 7.631 (0.64), 7.643 (0.64), 8.079 (3.09), 8.087 (3.02).

Compound 03.03
tert-butyl 4-[(2-{[6-(5-fluoro-2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (61.3 mg, 900 μmol) and di-1H-imidazol-1-ylmethanethione (844 mg, 95% purity, 4.50 mmol) in dichloromethane (30 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.32 g, 4.50 mmol) dissolved in dichloromethane (50 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-(5-fluoro-2-methoxypyridin-4-yl)benzene-1,2-diamine (1.50 g, 70% purity, 4.50 mmol), dissolved in dichloromethane (10 mL), was added and the mixture was stirred at r.t. for 65 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (2.8 mL, 18 mmol) was added and the mixture was stirred at r.t. for 1 h. Further N,N′-dipropan-2-ylcarbodiimide (2.8 mL, 18 mmol) was added and the mixture was stirred at r.t. for 2 h. Again, further N,N′-dipropan-2-ylcarbodiimide (2.8 mL, 18 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with ethanol. The solid was removed by filtration and was discarded. The solution was concentrated in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave 1.20 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.38 min; MS (ESIpos): m/z=534 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.993 (4.37), 1.009 (4.35), 1.038 (0.52), 1.056 (0.95), 1.073 (0.53), 1.387 (2.07), 1.396 (16.00), 1.987 (0.43), 2.350 (0.95), 2.362 (1.36), 2.374 (1.00), 3.351 (1.15), 3.503 (1.68), 3.845 (0.47), 3.879 (5.30), 6.930 (0.56), 7.187 (0.65), 8.201 (0.63), 8.208 (0.62), 8.261 (0.77), 8.274 (0.76).

Compound 03.04
6-(5-fluoro-2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(5-fluoro-2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (1.20 g, 1.80 mmol), Compound 03.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 0.58 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=434 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.968 (1.58), 0.985 (1.59), 2.296 (2.44), 2.300 (2.59), 2.304 (2.49), 2.309 (2.10), 2.684 (3.09), 2.696 (4.52), 2.708 (2.73), 3.410 (5.47), 3.856 (16.00), 5.733 (0.91), 6.893 (1.33), 6.896 (1.35), 6.906 (1.39), 6.909 (1.37), 7.148 (2.37), 8.182 (2.25), 8.188 (2.15), 8.226 (2.29), 8.239 (2.17).

Compound 04.01
4-(3-methoxypyridin-4-yl)-2-nitroaniline

embedded image

Starting with 4-bromo-2-nitroaniline (2.40 g, 11.1 mmol) and (3-methoxypyridin-4-yl)boronic acid (3.38 g, 22.1 mmol), Compound 04.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 2.20 g (73%) of the title compound.

LC-MS (Method 1): R_t=0.64 min; MS (ESIpos): m/z=246 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.917 (16.00), 7.082 (2.37), 7.105 (2.52), 7.382 (2.44), 7.394 (2.50), 7.613 (2.41), 7.677 (1.37), 7.683 (1.37), 7.699 (1.24), 7.705 (1.27), 8.240 (3.19), 8.252 (2.99), 8.271 (2.48), 8.277 (2.46), 8.437 (4.31).

Compound 04.02
4-(3-methoxypyridin-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(3-methoxypyridin-4-yl)-2-nitroaniline (2.10 g, 8.56 mmol) in ethanol (30 mL) was added Raney Nickel (50 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 16 h. The mixture was filtered, and the solution was concentrated in vacuum to give 1.80 g (88% yield) of the title compound as crude product, that was used for the next step without purification.

LC-MS (Method 2): R_t=0.69 min; MS (ESIpos): m/z=216 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.315 (4.62), 4.614 (1.94), 5.752 (0.66), 6.541 (8.22), 6.562 (10.75), 6.689 (5.56), 6.694 (5.89), 6.709 (4.10), 6.714 (4.55), 6.828 (10.07), 6.833 (9.39), 7.192 (8.70), 7.204 (9.09), 8.150 (10.53), 8.162 (10.08), 8.322 (16.00).

Compound 04.03
4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-amine

embedded image

To a stirred solution of (2-aminopyridin-4-yl)methanol (10.0 g, 97% purity, 78.1 mmol) and 1H-imidazole (5.32 g, 78.1 mmol) in DMF (70 mL), was added tert-butyl(chloro)dimethylsilane (12.1 g, 97% purity, 78.1 mmol) at 0° C. and the mixture was stirred at r.t. for 14 h. The solvent was removed in vacuum. Water was added and the mixture was extracted with ethyl acetate.

The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 16.0 g (86% yield) of the title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=239 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: −0.061 (0.42), 0.059 (11.41), 0.822 (0.66), 0.881 (0.84), 0.889 (16.00), 0.896 (0.76), 4.539 (1.92), 5.830 (0.78), 6.370 (0.66), 6.372 (0.76), 7.780 (0.59), 7.782 (0.52), 7.793 (0.56), 7.795 (0.54).

Compound 04.04
N-[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-amine

embedded image

To a stirred solution of 1H-imidazole (92.0 mg, 1.35 mmol) and di-1H-imidazol-1-ylmethanethione (1.52 g, 95% purity, 8.11 mmol) in dichloromethane (200 mL) was added 4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-amine (1.61 g, 6.76 mmol), dissolved in dichloromethane (200 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(3-methoxypyridin-4-yl)benzene-1,2-diamine (1.80 g, 97% purity, 8.11 mmol), dissolved in dichloromethane was added and the mixture was stirred at r.t. for 4 h. Water was added and the mixture was extracted with dichloromethane/methanol (10:1).

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (3.1 mL, 20 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with ethyl acetate. The solid was removed by filtration and was discarded. The solution was concentrated in vacuum. Aminophase-silicagel chromatography gave 1.10 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.51 min; MS (ESIpos): m/z=462 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.150 (12.43), 0.970 (1.01), 0.978 (16.00), 0.985 (0.93), 1.015 (0.74), 1.031 (0.76), 1.196 (0.72), 2.010 (1.31), 3.930 (3.13), 4.766 (1.90), 7.394 (0.57), 8.266 (0.79), 8.272 (0.94), 8.280 (0.86), 8.284 (0.91), 8.458 (1.50).

Compound 04.05
(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methanol

embedded image

To a stirred solution of crude N-[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-amine (1.10 g, approx. 2.38 mmol) in THF (27 mL), was added tetra-n-butylammoniumfluoride (4.8 mL, 1.0 M, 4.8 mmol), and the mixture was stirred at r.t. for 1 h. Water was added, the mixture was stirred for 30 minutes and the mixture was extracted with ethyl acetate and then with dichloromethane/methanol (100:1). The combined organic phases were dried (sodium sulfate), filtered and the solvent was removed in vacuum. The solid was triturated with ethanol to give 700 mg (76% yield) of the title compound.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=348 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.172 (0.73), 1.986 (1.45), 3.906 (16.00), 4.517 (4.11), 4.531 (4.20), 5.430 (1.79), 5.444 (3.84), 5.458 (1.68), 5.755 (0.46), 6.880 (1.85), 6.884 (1.82), 6.894 (1.88), 6.897 (1.84), 7.202 (2.63), 7.268 (0.62), 7.360 (2.65), 7.372 (2.73), 8.236 (2.92), 8.248 (6.20), 8.260 (3.55), 8.434 (6.22), 10.666 (1.23), 12.194 (0.86).

Compound 04.06
N-[4-(chloromethyl)pyridin-2-yl]-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-amine

embedded image

To a suspension of (2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methanol (700 mg, 2.02 mmol) in dioxane (50 mL, 580 mmol) was added thionyl dichloride (590 μl, 8.1 mmol) and the mixture was stirred for 86 h. A solution of sodium bicarbonate was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum to give 870 mg of the title compound as a crude product.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=366 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ[ppm]: 1.355 (0.44), 3.311 (16.00), 3.908 (8.77), 4.779 (6.30), 7.007 (1.14), 7.010 (1.09), 7.017 (1.09), 7.020 (1.15), 7.301 (1.13), 7.363 (1.37), 7.372 (1.37), 8.251 (2.25), 8.261 (2.07), 8.321 (1.72), 8.332 (1.63), 8.437 (3.54).

Compound 04.07
6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (800 mg, 1.55 mmol), Compound 04.07 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 0.80 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=460 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.523 (1.48), 2.526 (1.48), 2.728 (1.49), 2.889 (1.73), 3.258 (0.93), 3.401 (2.10), 4.048 (16.00), 4.322 (0.66), 7.555 (2.55), 7.650 (1.48), 7.654 (1.39), 7.671 (1.78), 7.675 (1.84), 7.795 (2.28), 7.815 (1.71), 7.942 (1.81), 7.956 (1.94), 8.036 (2.43), 8.040 (2.42), 8.529 (1.27), 8.543 (1.19), 8.589 (2.47), 8.603 (2.36), 8.744 (4.60).

Compound 05.01
4-bromo-3-(2,2,2-trifluoroethoxy)pyridine

embedded image

To a stirred solution of 4-bromopyridin-3-ol (1.00 g, 95% purity, 5.46 mmol) in DMA (15 mL) was added potassium carbonate (981 mg, 7.10 mmol) and 2,2,2-trifluoroethyl trifluoromethanesulfonate (1.2 mL, 97% purity, 8.2 mmol). The mixture was stirred at r.t. for 48 h. Water was added (250 mL) and ammonium chloride was added until pH7 was reached. The mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum to give 1.43 g of the title compound as crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=256 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ[ppm]: 4.663 (0.53), 4.682 (1.51), 4.700 (1.45), 4.718 (0.46), 4.910 (0.99), 4.928 (0.93), 4.997 (4.67), 5.015 (13.93), 5.033 (13.29), 5.050 (4.20), 6.310 (1.35), 6.325 (1.31), 7.739 (10.77), 7.749 (11.23), 7.845 (0.86), 7.850 (0.75), 8.156 (10.52), 8.166 (10.05), 8.511 (16.00).

Compound 05.02
2-nitro-4-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]aniline

embedded image

Starting with crude 4-bromo-3-(2,2,2-trifluoroethoxy)pyridine (1.43 g, approx. 5.03 mmol) and 2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (1.37 g, 97% purity, 5.03 mmol), Compound 05.02 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.25 g of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=314 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.069 (4.06), 2.327 (0.66), 2.523 (1.31), 2.669 (0.61), 3.162 (0.58), 3.175 (0.61), 3.912 (0.67), 4.909 (3.12), 4.931 (9.05), 4.953 (8.56), 4.975 (2.54), 5.752 (1.17), 7.091 (7.76), 7.113 (8.10), 7.470 (7.97), 7.482 (8.31), 7.525 (0.91), 7.528 (1.46), 7.533 (1.18), 7.536 (1.28), 7.540 (1.01), 7.544 (2.45), 7.547 (3.52), 7.549 (3.47), 7.555 (2.81), 7.558 (2.69), 7.564 (4.23), 7.572 (3.19), 7.592 (2.66), 7.597 (5.22), 7.605 (2.18), 7.610 (2.99), 7.614 (4.87), 7.618 (2.57), 7.623 (5.80), 7.626 (8.20), 7.631 (7.26), 7.637 (9.43), 7.644 (6.29), 7.647 (3.90), 7.651 (1.34), 7.673 (4.28), 7.679 (4.38), 7.696 (3.89), 7.701 (3.93), 8.327 (9.81), 8.340 (16.00), 8.346 (8.10), 8.511 (14.24).

Compound 05.03
4-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]benzene-1,2-diamine

embedded image

To a stirred solution of 2-nitro-4-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]aniline (1.25 g, 3.99 mmol) in ethanol (20 mL) and dichloromethane (40 mL) was added palladium on carbon (10% w/w palladium) (425 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3 h. The mixture was filtered, and the solution was concentrated in vacuum. Aminophase-silicagel chromatography gave 0.74 g (65% yield) of the title compound.

LC-MS (Method 2): R_t=0.82 min; MS (ESIpos): m/z=284 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 4.514 (8.54), 4.758 (3.76), 4.780 (14.97), 4.785 (11.17), 4.802 (10.43), 4.824 (3.10), 5.752 (16.00), 6.545 (7.92), 6.565 (9.38), 6.753 (4.60), 6.758 (5.54), 6.773 (3.47), 6.778 (4.69), 6.802 (9.61), 6.807 (7.41), 7.262 (8.62), 7.274 (8.94), 7.525 (0.59), 7.528 (1.02), 7.533 (0.81), 7.536 (0.90), 7.544 (1.71), 7.547 (2.38), 7.549 (2.42), 7.555 (2.01), 7.558 (1.77), 7.564 (2.85), 7.566 (2.29), 7.572 (2.19), 7.574 (2.08), 7.594 (1.83), 7.598 (3.47), 7.604 (1.71), 7.607 (1.27), 7.611 (1.89), 7.615 (2.51), 7.619 (1.68), 7.624 (3.79), 7.626 (4.54), 7.631 (2.38), 7.640 (1.20), 7.644 (2.45), 7.647 (1.89), 8.240 (11.48), 8.252 (10.23), 8.392 (15.29).

Compound 05.04
tert-butyl 4-{[2-({6-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (43.3 mg, 635 μmol) and di-1H-imidazol-1-ylmethanethione (596 mg, 95% purity, 3.18 mmol) in dichloromethane (35 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (929 mg, 3.18 mmol), dissolved in dichloromethane (18 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]benzene-1,2-diamine (900 mg, 3.18 mmol), dissolved in dichloromethane (18 mL), was added and the mixture was stirred at r.t. for 3 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.4 mL, 9.2 mmol) was added and the mixture was stirred at r.t. for 56 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 130 mg of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=584 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.385 (1.81), 1.389 (11.21), 1.394 (16.00), 2.322 (0.78), 2.327 (0.86), 2.332 (0.98), 2.336 (0.95), 2.346 (1.29), 2.359 (1.27), 2.371 (0.95), 2.518 (3.42), 2.523 (2.13), 3.499 (1.96), 5.760 (1.92), 8.210 (0.46), 8.212 (0.47), 8.224 (0.47), 8.258 (0.70), 8.272 (0.70), 8.513 (1.10).

Compound 05.05
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (130 mg, 223 μmol), Compound 05.05 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 159 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=484 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.003 (0.46), 2.083 (0.49), 2.323 (1.09), 2.327 (1.51), 2.332 (1.14), 2.523 (10.22), 2.665 (1.46), 2.669 (1.82), 2.673 (1.41), 3.162 (1.94), 3.296 (1.97), 3.485 (1.19), 3.561 (2.67), 3.563 (16.00), 4.366 (1.24), 5.023 (1.82), 5.045 (4.52), 5.067 (4.35), 5.088 (1.72), 5.760 (4.81), 7.558 (3.59), 7.616 (2.50), 7.620 (2.43), 7.637 (2.79), 7.641 (3.03), 7.778 (3.71), 7.787 (2.38), 7.799 (4.71), 7.913 (4.37), 8.376 (1.36), 8.390 (1.41), 8.547 (1.77), 8.560 (1.89), 8.583 (3.71), 8.596 (3.54), 8.782 (5.97), 9.690 (1.09).

Compound 06.01
4-bromo-3-(propan-2-yloxy)pyridine

embedded image

To a stirred solution of 4-bromopyridin-3-ol (5.00 g, 28.7 mmol) in DMA (150 mL) was added potassium carbonate (11.9 g, 86.2 mmol) and 2-iodopropane (4.3 mL, 43 mmol) and the mixture was stirred at 70° C. for 3 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 4.41 g (71% yield) of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=216 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.307 (15.82), 1.311 (2.09), 1.322 (16.00), 1.326 (1.88), 4.803 (0.88), 4.818 (1.18), 4.833 (0.88), 7.662 (2.23), 7.674 (2.33), 8.030 (2.72), 8.042 (2.52), 8.413 (3.82).

Compound 06.02
2-nitro-4-[3-(propan-2-yloxy)pyridin-4-yl]aniline

embedded image

Starting with 4-bromo-3-(propan-2-yloxy)pyridine (1.78 g, 8.07 mmol) and (4-amino-3-nitrophenyl)boronic acid (2.64 g, 14.5 mmol), Compound 06.02 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.10 g (45%) of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=274 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.263 (15.64), 1.279 (16.00), 4.716 (0.97), 4.731 (1.31), 4.747 (0.97), 7.077 (2.39), 7.099 (2.51), 7.404 (2.46), 7.417 (2.51), 7.546 (0.77), 7.549 (0.76), 7.554 (0.62), 7.564 (0.86), 7.566 (0.70), 7.571 (0.69), 7.596 (1.10), 7.609 (0.93), 7.613 (1.53), 7.622 (3.99), 7.625 (4.03), 7.630 (1.72), 7.638 (0.70), 7.643 (0.88), 7.712 (1.42), 7.718 (1.37), 7.735 (1.30), 7.740 (1.27), 8.206 (3.03), 8.218 (2.82), 8.412 (3.15), 8.417 (6.33).

Compound 06.03
4-[3-(propan-2-yloxy)pyridin-4-yl]benzene-1,2-diamine

embedded image

To a stirred solution of 2-nitro-4-[3-(propan-2-yloxy)pyridin-4-yl]aniline (1.10 g, 4.02 mmol) in ethanol (16 mL) was added palladium on carbon (10% w/w palladium) (428 mg, 402 μmol) and the mixture was stirred at r.t. in a hydrogen atmosphere for 48 h. The mixture was filtered, and the solution was concentrated in vacuum. Silicagel chromatography gave 840 mg (77% yield) of the title compound.

LC-MS (Method 2): R_t=0.80 min; MS (ESIpos): m/z=244 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.207 (15.79), 1.222 (16.00), 2.083 (0.57), 4.492 (1.02), 4.507 (1.80), 4.516 (2.48), 4.522 (1.99), 4.713 (2.77), 5.751 (0.60), 6.542 (2.17), 6.562 (2.55), 6.744 (1.35), 6.749 (1.48), 6.764 (1.10), 6.769 (1.18), 6.872 (2.44), 6.877 (2.25), 7.198 (2.30), 7.210 (2.34), 7.545 (0.63), 7.548 (0.73), 7.553 (0.64), 7.562 (0.72), 7.565 (0.70), 7.570 (0.61), 7.572 (0.57), 7.598 (1.01), 7.603 (0.58), 7.615 (0.62), 7.625 (1.28), 7.630 (0.72), 7.646 (0.70), 8.127 (3.11), 8.139 (3.13), 8.270 (4.43).

Compound 06.04
tert-butyl 4-{[2-({6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (39.6 mg, 582 μmol) and di-1H-imidazol-1-ylmethanethione (692 mg, 90% purity, 3.49 mmol) in dichloromethane (20 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (851 mg, 2.91 mmol), dissolved in dichloromethane (20 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-[3-(propan-2-yloxy)pyridin-4-yl]benzene-1,2-diamine (840 mg, 97% purity, 3.35 mmol), dissolved in dichloromethane (15 mL), was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (620 μl, 4.0 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (230 μl, 1.5 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase-silicagel chromatography gave 240 mg of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.32 min; MS (ESIpos): m/z=544 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.054 (1.16), 1.227 (2.03), 1.241 (2.01), 1.391 (7.80), 1.396 (16.00), 2.349 (1.18), 2.362 (1.33), 2.374 (0.96), 3.349 (1.19), 3.501 (1.96), 8.222 (1.22), 8.234 (0.98), 8.396 (1.66).

Compound 06.05
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (240 mg, 441 μmol), Compound 06.05 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 340 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=444 [M+H]⁺.

Compound 07.01
2-methyl-5-{[2-(trimethylsilyl)ethoxy]methoxy}pyridine

embedded image

To a stirred suspension of 6-methylpyridin-3-ol (15.7 g, 144 mmol) in dichloromethane (130 mL), was added N,N-diisopropylethylamine (30 mL, 170 mmol), and [2-(chloromethoxy)ethyl](trimethyl)silane (26 mL, 150 mmol) and the mixture was stirred at r.t. for 19 h. The mixture was washed with water and the organic phase was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 32.8 g (95% yield) of the title compound.

LC-MS (Method 5): R_t=3.26 min; MS (ESIpos): m/z=240 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: −0.042 (2.31), −0.025 (2.20), 0.000 (1.67), 0.858 (2.60), 0.879 (2.81), 0.881 (2.00), 0.899 (2.80), 2.390 (16.00), 2.498 (0.68), 2.502 (0.97), 2.506 (0.66), 3.315 (6.15), 3.681 (2.75), 3.699 (2.28), 3.701 (3.30), 3.703 (2.44), 3.721 (2.80), 5.237 (13.03), 7.155 (1.62), 7.176 (2.32), 7.322 (1.60), 7.329 (1.74), 7.344 (1.25), 7.350 (1.42), 8.184 (1.85), 8.191 (2.16).

Compound 07.02
4-iodo-2-methyl-5-{[2-(trimethylsiyl)ethoxy]methoxy}pyridine

embedded image

To a stirred solution of 2-methyl-5-{[2-(trimethylsilyl)ethoxy]methoxy}pyridine (22.5 g, 94.0 mmol) in diethyl ether (360 mL) was added a solution of tert-butyllithium in pentane (55 mL, 1.9 M, 100 mmol) at −70° C. The solution was stirred at −78° C. for 5 minutes. Iodine (24.3 g, 95.7 mmol), dissolved in THF (50 mL) was added at −70° C., and the mixture was stirred at −78° C. for 0.5 h and then allowed to warm up to room temperature. An aqueous solution of disodium sulfurothioate (c=1M; 300 mL) was added and the reaction mixture was stirred for 5 minutes. The phases were separated and the aqueous phase was extracted with diethyl ether. The combined organic phases were dried (magnesium sulfate), filtered and the solvent was removed in vacuum. The residue was crystallized from pentane to give 24.8 g (72% yield) of the title compound.

Compound 07.03
4-iodo-6-methylpyridin-3-ol

embedded image

To a stirred solution of 4-iodo-2-methyl-5-{[2-(trimethylsilyl)ethoxy]methoxy}pyridine (24.8 g, 67.9 mmol) in dioxane (120 mL) was added aqueous hydrochloric acid (15 mL, 37%, 180 mmol). The mixture was stirred at 60° C. for 0.5 h. Sodium bicarbonate (45 g) was added and the mixture was stirred for 30 minutes. THF (300 mL) was added, the mixture was filtered through sodium sulfate and the solvent was removed in vacuum. Diethyl ether was added to the residue, solids were removed by filtration and the solvent was removed in vacuum to give 15.1 g (95% yield) of the title compound.

LC-MS (Method 5): R_t=0.38 min; MS (ESIpos): m/z=236 [M+H]⁺.

Compound 07.04
4-iodo-5-methoxy-2-methylpyridine

embedded image

To a stirred solution of 4-iodo-6-methylpyridin-3-ol (4.80 g, 20.4 mmol) in dichloromethane (60 mL) and methanol (30 mL) was added (diazomethyl)(trimethyl)silane (12 mL, 2.0 M solution in hexane, 24 mmol). The mixture was stirred at r.t. for 1 h. The solvent was removed in vacuum. Silicagel chromatography gave 3.5 g (69% yield) of the title compound.

LC-MS (Method 5): R_t=0.90 min; MS (ESIpos): m/z=250 M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.357 (14.33), 2.493 (0.60), 2.499 (0.80), 2.503 (0.59), 3.310 (3.81), 3.891 (16.00), 7.697 (3.86), 8.070 (4.16).

Compound 07.05
tert-butyl 4-[(2-{[6-(5-methoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (1.10 g, 2.06 mmol) and 4-iodo-5-methoxy-2-methylpyridine (600 mg, 2.41 mmol) in dioxane (10 mL) and water (2.0 mL) was added sodium carbonate (660 mg, 6.23 mmol) and Pd(dppf)C₂. CH₂Cl₂(250 mg, 306 μmol). The mixture was heated to reflux for 24 h. Chloroform was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 915 mg (84% yield) of the title compound.

LC-MS (Method 5): R_t=2.56 min; MS (ESIpos): m/z=530 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.142 (1.07), 1.394 (16.00), 1.909 (0.53), 2.081 (2.48), 2.115 (0.47), 2.354 (0.96), 2.367 (1.45), 2.379 (1.07), 2.451 (4.85), 2.495 (0.89), 2.500 (1.23), 2.505 (0.94), 3.340 (1.11), 3.351 (1.50), 3.364 (1.12), 3.503 (1.71), 3.853 (5.50), 6.915 (0.54), 6.918 (0.56), 6.928 (0.56), 6.931 (0.57), 7.196 (0.97), 7.233 (1.62), 7.242 (0.59), 7.246 (0.56), 7.263 (0.59), 7.267 (0.62), 7.444 (0.62), 7.465 (0.53), 7.661 (0.65), 8.254 (0.85), 8.270 (2.02).

Compound 07.06
6-(5-methoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

embedded image

To a stirred solution tert-butyl 4-[(2-{[6-(5-methoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (900 mg, 1.70 mmol) in dioxane (8 mL) was added aqueous hydrochloric acid (1.4 mL, 6.0 M, 8.4 mmol). The mixture was stirred at room temperature for 2 h. Sodium bicarbonate (5.0 g) was added and the mixture was stirred for 30 minutes. THF (50 mL) was added, the mixture was filtered through magnesium sulfate and the solvent was removed in vacuum. Diethyl ether was added to the residue, solids were removed by filtration and the solvent was removed in vacuum to give 695 mg (95% yield) of the title compound.

LC-MS (Method 5): R_t=3.30 min; MS (ESIpos): m/z=535[M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.062 (4.84), 1.079 (9.70), 1.097 (4.89), 1.215 (1.04), 1.730 (2.43), 1.737 (3.18), 1.746 (6.66), 1.754 (3.18), 1.763 (2.43), 2.442 (15.71), 2.495 (5.78), 2.499 (7.44), 2.503 (6.92), 2.508 (5.84), 2.517 (5.16), 2.938 (4.94), 3.163 (1.92), 3.344 (2.08), 3.362 (5.49), 3.379 (5.47), 3.397 (2.11), 3.505 (5.84), 3.573 (3.33), 3.589 (6.93), 3.596 (3.22), 3.606 (2.92), 3.845 (16.00), 6.890 (0.40), 6.905 (2.05), 6.919 (2.00), 7.219 (5.34), 7.249 (4.53), 7.439 (0.74), 7.648 (0.44), 8.243 (2.62), 8.259 (6.56).

Compound 08.01
{4-[(2-aminopyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

To a stirred suspension of 4-(bromomethyl)pyridin-2-amine hydrobromide (10.0 g, 37.3 mmol) in acetonitrile (75 mL) was added potassium carbonate (16.0 g, 116 mmol) and cyclopropyl(piperazin-1-yl)methanone (6.10 g, 39.6 mmol) (CAS-RN 59878-57-8) The mixture was stirred at 75° C. for 2 h. Direct silicagel chromatography of the reaction mixture gave a solid which was triturated with ether to give 7.20 g (74% yield) of the title compound.

LC-MS (Method 5): R_t=0.14 min; MS (ESIpos): m/z=261 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.655 (0.49), 0.667 (1.47), 0.674 (3.50), 0.680 (2.08), 0.687 (1.70), 0.694 (4.26), 0.699 (3.30), 0.705 (3.66), 0.712 (3.58), 0.717 (4.34), 0.724 (1.98), 0.737 (0.54), 1.905 (0.42), 1.917 (0.87), 1.924 (0.93), 1.928 (0.69), 1.936 (1.55), 1.942 (0.73), 1.948 (0.90), 1.956 (0.83), 2.304 (1.43), 2.376 (1.45), 2.490 (0.57), 2.495 (1.18), 2.500 (1.61), 2.504 (1.18), 2.509 (0.57), 3.332 (16.00), 3.355 (0.68), 3.462 (1.29), 3.599 (0.53), 3.615 (0.43), 3.661 (1.28), 5.805 (4.16), 6.408 (3.74), 6.428 (2.21), 6.431 (1.88), 6.441 (2.19), 6.444 (1.89), 7.815 (2.34), 7.828 (2.29).

Compound 08.02
cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of di-1H-imidazol-1-ylmethanethione (5.20 g, 29.2 mmol) and imidazole (400 mg, 5.88 mmol) in dichloromethane (50 mL) was added {4-[(2-aminopyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone (7.20 g, 27.7 mmol), dissolved in dichloromethane (50 mL) at 0° C. The mixture was stirred at 0° C. for 4 h. 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (6.50 g, 27.8 mmol) dissolved in dichloromethane (50 mL) was added and the mixture was stirred at r.t. for 18 h. Water was added and the mixture was extracted with chloroform.

The organic phase was dried (magnesium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (6.0 mL, 39 mmol) was added and the mixture was stirred at 40° C. for 8 h. Direct silicagel chromatography of the crude mixture gave 5.25 g (38% yield) of the title compound.

LC-MS (Method 5): R_t=2.94 min; MS (ESIpos): m/z=503 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.666 (0.49), 0.673 (0.85), 0.678 (0.68), 0.686 (0.56), 0.694 (0.98), 0.706 (0.71), 0.711 (0.96), 0.718 (1.06), 0.722 (1.13), 0.730 (0.61), 1.298 (16.00), 1.931 (0.44), 2.360 (0.56), 2.421 (0.56), 2.495 (0.71), 2.499 (0.84), 2.503 (0.58), 3.334 (8.11), 3.501 (2.68), 6.916 (0.70), 6.929 (0.67), 7.185 (0.49), 7.379 (0.50), 8.244 (0.93), 8.257 (0.88).

Compound 08.03
2-(hydroxymethyl)-5-methoxy-4H-pyran-4-one

embedded image

To a solution of potassium hydroxide (4.50 g, 80.2 mmol) in 40 mL water was added 5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one (10.0 g, 70.4 mmol, CAS-RN 6269-25-6) and the mixture was stirred at r.t. until a solution had formed. Dimethyl sulfate (6.7 mL, 71 mmol) was added slowly, and the mixture was stirred at 23° C. for 1 h and then at 0° C. for 1 h. A solid precipitated and was collected by filtration, washed with water, and dried to give 7.35 g (67% yield) of the title compound.

LC-MS (Method 5): R_t=0.25 min; MS (ESIpos): m/z=157 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.499 (0.58), 2.503 (0.45), 3.313 (2.22), 3.644 (16.00), 4.285 (2.03), 4.298 (2.05), 5.657 (0.84), 6.285 (1.58), 6.287 (3.03), 6.289 (1.50), 8.070 (5.73).

Compound 08.04
2-(hydroxymethyl)-5-methoxypyridin-4-ol

embedded image

To a stirred mixture of 2-(hydroxymethyl)-5-methoxy-4H-pyran-4-one (6.68 g, 42.8 mmol) in methanol (10 mL) was added aqueous ammonium hydroxide solution (20 mL, c=25%, 130 mmol). The mixture was heated to 100° C. in a sealed tube for 6 h. The solvent was removed in vacuum. Silicagel chromatography gave 4.97 g (75% yield) of the title compound.

LC-MS (Method 5): R_t=0.14 min; MS (ESIpos): m/z=156 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.490 (0.83), 2.495 (1.96), 2.499 (2.75), 2.503 (1.80), 2.509 (0.83), 3.320 (16.00), 3.643 (1.52), 4.330 (2.40), 4.343 (2.35).

Compound 08.05
4-hydroxy-5-methoxypyridine-2-carboxylic acid

embedded image

Concentrated nitric acid (25 mL, c=65%) and fuming nitric acid (5.0 mL, c=90%) were added to 2-(hydroxymethyl)-5-methoxypyridin-4-ol (4.97 g, 32.0 mmol). The mixture was stirred at r.t. for 1 day, then poured into icewater. The precipitate was collected by filtration and the dissolved in diluted sodium hydroxide solution. Hydrochloric acid (c=2N) was added until pH4 was reached. A solid precipitated and was collected by filtration to give 2.90 g of the title compound.

LC-MS (Method 5): R_t=0.17 min; MS (ESIpos): m/z=170 [M+H]⁺.

Compound 08.06
4-bromo-5-methoxy-N,N-dimethylpyridine-2-carboxamide

embedded image

To a solution of 4-hydroxy-5-methoxypyridine-2-carboxylic acid (1.00 g, 5.91 mmol) in DMF (20 mL, 260 mmol), was slowly added phosphorus tribromide (2.0 mL, 21 mmol) with water bath cooling. The mixture was stirred at 23° C. for 1 h, and then slowly added to an aqueous solution of N-methylmethanamine-(20 mL, c=40%, 160 mmol) with water bath cooling. The mixture was stirred at 23° C. for 1 h. A saturated sodium chloride solution was added and the mixture was extracted with ethyl acetate, dried (magnesium sulfate) and the solvent was removed in vacuum. The residue was crystallized from cyclohexane to give 535 mg (35% yield) of the title compound.

LC-MS (Method 5): R_t=2.70 min; MS (ESIpos): m/z=259 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.495 (0.70), 2.500 (0.96), 2.505 (0.71), 2.989 (11.95), 2.996 (12.87), 3.314 (9.25), 4.023 (16.00), 4.028 (1.69), 7.831 (5.65), 8.371 (4.82).

Compound 09.01
5-ethoxy-4-iodo-2-methylpyridine

embedded image

To a stirred solution of 4-iodo-6-methylpyridin-3-ol (4.00 g, 17.0 mmol) in DMF (10 mL) was added potassium carbonate (5.00 g, 36.2 mmol) and iodoethane (2.0 mL, 25 mmol). The mixture was stirred at r.t. for 3 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 2.54 g (57% yield) of the title compound.

LC-MS (Method 5): R_t=2.38 min; MS (ESIpos): m/z=264 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.337 (4.18), 1.355 (9.04), 1.373 (4.31), 2.352 (16.00), 2.495 (0.65), 2.499 (0.91), 2.503 (0.65), 3.310 (5.16), 4.126 (1.41), 4.144 (4.20), 4.162 (3.90), 4.178 (1.24), 7.694 (4.21), 8.050 (4.86).

Compound 09.02
tert-butyl 4-[(2-{[6-(5-ethoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (1.10 g, 2.06 mmol) and 5-ethoxy-4-iodo-2-methylpyridine (700 mg, 2.66 mmol) in dioxane (10 mL) and water (2.0 mL) was added sodium carbonate (660 mg, 6.23 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(250 mg, 306 μmol). The mixture was heated to reflux for 24 h. Chloroform was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 790 mg (70% yield) of the title compound.

LC-MS (Method 5): R_t=2.68 min; MS (ESIpos): m/z=544 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.072 (0.43), 1.141 (2.99), 1.155 (0.73), 1.264 (1.16), 1.281 (2.53), 1.299 (1.27), 1.391 (16.00), 2.079 (1.77), 2.113 (1.18), 2.342 (1.05), 2.354 (1.52), 2.366 (1.07), 2.441 (4.84), 2.480 (0.75), 2.495 (0.66), 2.499 (0.90), 2.503 (0.63), 3.334 (2.49), 3.344 (2.36), 3.488 (1.91), 4.069 (0.45), 4.087 (1.36), 4.103 (1.35), 6.904 (0.58), 6.917 (0.58), 7.194 (0.99), 7.229 (1.49), 8.241 (1.75), 8.250 (0.94), 8.264 (0.85).

Compound 09.03
6-(5-ethoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

embedded image

Starting with tert-butyl 4-[(2-{[6-(5-ethoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (780 mg, 1.43 mmol), Compound 09.03 was prepared analogously to the procedure for the preparation of Example 07.06 Yield: 500 mg (79% of the title compound.

LC-MS (Method 5): R_t=1.99 min; MS (ESIpos): m/z=444 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (0.71), 1.083 (1.41), 1.101 (0.74), 1.265 (3.53), 1.283 (7.33), 1.300 (3.82), 2.343 (4.05), 2.442 (16.00), 2.491 (1.40), 2.495 (2.68), 2.500 (3.55), 2.504 (2.68), 2.509 (1.41), 2.754 (4.84), 3.348 (3.72), 3.366 (3.58), 3.383 (2.82), 3.401 (1.80), 3.434 (7.34), 4.070 (1.38), 4.087 (4.27), 4.105 (4.28), 4.122 (1.41), 6.897 (1.89), 6.910 (1.95), 7.184 (3.19), 7.229 (4.01), 7.281 (1.14), 7.301 (1.42), 7.445 (0.55), 8.242 (7.80), 8.256 (2.66).

Compound 09.04
Cyclopropylacetyl Chloride

embedded image

To a stirred solution of cyclopropylacetic acid (930 μl, 10 mmol) in dichloromethane (4 mL) was added ethanedioyl dichloride (500 μl, 5.7 mmol) and the mixture was stirred at r.t. for 4 h. The mixture was carefully concentrated in vacuum to give 1.00 g of the title compound as crude product that was used without purification.

Compound 10.01
4-iodo-2-methoxy-3-methylpyridine

embedded image

To a stirred solution of 2-fluoro-4-iodo-3-methylpyridine (250 mg, 1.05 mmol) in methanol (100 mL) was added lithium methoxide (1.00 g, 26.3 mmol), and the mixture was heated to reflux for 30 minutes. The reaction mixture was cooled down and water was added. A solid precipitated and was collected by filtration, washed with water, and dried to give 260 mg (99% yield) of the title compound.

LC-MS (Method 5): R_t=3.78 min; MS (ESIpos): m/z=250 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.253 (11.45), 2.493 (0.56), 2.499 (0.76), 2.503 (0.56), 3.319 (15.44), 3.851 (16.00), 7.391 (1.89), 7.404 (2.16), 7.645 (1.63), 7.658 (1.48).

Compound 11.01
4-iodo-3-methyl-2-(propan-2-yloxy)pyridine

embedded image

Sodium hydride (500 mg, 60% in oil, 12.5 mmol) was carefully added to propan-2-ol (10 mL, 130 mmol). After stirring for 15 minutes, 2-fluoro-4-iodo-3-methylpyridine (250 mg, 1.05 mmol) was added, and the mixture was stirred at reflux for 30 minutes. The reaction mixture was cooled down and water (50 mL) was added. The mixture was extracted with diethyl ether, the organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum to give 210 mg of the title compound as a crude product that was used without purification.

LC-MS (Method 5): R_t=0.32 min; MS (ESIpos): m/z=186 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.089 (0.80), 1.273 (0.76), 1.278 (7.25), 1.295 (7.12), 1.354 (0.43), 2.235 (5.53), 2.490 (0.85), 2.495 (1.64), 2.499 (2.12), 2.504 (1.45), 2.509 (0.68), 3.285 (1.16), 3.309 (16.00), 5.200 (0.48), 5.215 (0.64), 5.231 (0.47), 7.356 (1.00), 7.369 (1.11), 7.624 (0.72), 7.639 (0.71).

Compound 12.01
6-(6-methylpyridin-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(6-methylpyridin-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (380 mg, 761 μmol), Compound 12.01 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 350 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=400 [M+H]⁺.

Compound 13.01
4-(6-methoxypyridin-3-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 5-bromo-2-methoxypyridine (350 μl, 95% purity, 2.5 mmol) in 1-propanol (12 mL) was added a potassium carbonate solution (3.8 mL, 2.0 M, 7.6 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (660 mg, 90% purity, 2.54 mmol) triphenylphosphine (66.6 mg, 254 μmol) and PdCl₂(PPh₃)₂(178 mg, 254 μmol) The mixture was heated to 120° C. in a sealed tube for 14 h. The mixture was filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 500 mg (82% yield) of the title compound.

LC-MS (Method 1): R_t=0.61 min; MS (ESIpos): m/z=216 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.067 (4.34), 1.154 (0.74), 1.172 (1.54), 1.189 (0.76), 1.988 (2.57), 3.337 (16.00), 3.908 (2.00), 3.943 (0.72), 4.017 (0.59), 4.035 (0.59), 4.567 (1.80), 4.602 (2.04), 5.760 (2.04), 6.555 (3.35), 6.575 (4.68), 6.656 (2.41), 6.661 (2.63), 6.675 (1.69), 6.680 (1.82), 6.775 (4.27), 6.780 (3.75), 6.797 (3.17), 6.799 (2.96), 6.818 (3.24), 6.820 (2.94), 7.528 (0.77), 7.536 (0.79), 7.544 (1.44), 7.547 (2.01), 7.549 (1.90), 7.552 (1.40), 7.555 (1.73), 7.558 (1.65), 7.564 (2.49), 7.566 (1.92), 7.572 (1.83), 7.574 (1.71), 7.592 (1.50), 7.596 (2.56), 7.605 (1.07), 7.610 (1.42), 7.614 (2.27), 7.617 (1.25), 7.622 (2.84), 7.626 (3.62), 7.631 (1.69), 7.639 (1.24), 7.643 (1.96), 7.646 (1.49), 7.762 (2.51), 7.769 (2.45), 7.784 (2.32), 7.790 (2.37), 8.249 (2.86), 8.251 (3.09), 8.256 (3.04).

Compound 13.02
6-(6-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(6-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (110 mg, 213 μmol), Compound 13.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 110 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=416 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.022 (5.63), 3.358 (1.08), 3.500 (0.69), 3.527 (16.00), 3.878 (9.50), 4.438 (0.98), 6.495 (1.32), 6.520 (1.35), 6.922 (0.98), 6.924 (1.01), 6.944 (1.04), 7.508 (0.90), 7.512 (1.01), 7.523 (1.65), 7.530 (2.24), 7.534 (1.97), 7.599 (1.14), 7.603 (0.93), 7.619 (0.87), 7.624 (0.91), 7.649 (1.47), 7.670 (1.07), 7.709 (1.98), 7.713 (1.43), 7.730 (2.31), 7.735 (1.66), 7.814 (0.90), 7.821 (0.81), 7.838 (1.86), 7.845 (0.92), 7.978 (0.78), 7.984 (0.77), 7.999 (0.69), 8.006 (0.73), 8.450 (1.07), 8.452 (1.04), 8.456 (1.02), 8.458 (1.04), 8.511 (1.03), 8.523 (1.45), 8.535 (0.77).

Compound 14.01
tert-butyl 4-[(2-{[6-(4-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (400 mg, 748 μmol) and 3-bromo-4-methoxypyridine (169 mg, 898 μmol) in dioxane (4 mL) and water (0.7 mL) was added sodium carbonate (238 mg, 2.25 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(91.7 mg, 112 μmol). The mixture was heated to reflux for 24 h. Further 3-bromo-4-methoxypyridine (70 mg) was added and the mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 16.0 mg (4% yield) of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.261 (0.74), 1.468 (16.00), 2.330 (1.89), 3.394 (1.99), 3.444 (1.92), 3.927 (1.16), 6.927 (0.58), 6.941 (0.64), 6.953 (0.79), 6.965 (0.70), 7.081 (1.09), 8.283 (0.78), 8.296 (0.74), 8.483 (0.57), 8.497 (0.56), 8.540 (1.04).

Compound 14.02
6-(4-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(4-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (173 mg, 336 μmol), Compound 14.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 203 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=416 [M+H]⁺.

Compound 15.01
tert-butyl 4-[(2-{[6-(2-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 561 μmol) and 3-iodo-2-methoxypyridine (158 mg, 674 μmol) in dioxane (3 mL) and water (0.55 mL) was added sodium carbonate (178 mg, 1.68 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(68.8 mg, 84.2 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 125 mg (43% yield) of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=400 [M+H]⁺.

Compound 15.02
6-(2-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (124 mg, 240 μmol), Compound 15.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 133 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=416 [M+H]⁺

Compound 16.01
methyl 2-{[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]amino}-1H-benzimidazole-5-carboxylate

embedded image

To a stirred solution of 1H-imidazole (474 mg, 6.96 mmol) and di-1H-imidazol-1-ylmethanethione (9.65 g, 90% purity, 48.7 mmol) in dichloromethane (200 mL) was added 4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-amine (8.30 g, 34.8 mmol), dissolved in dichloromethane (100 mL) at 0° C. The mixture was stirred at r.t. for 18 h. Methyl 3,4-diaminobenzoate (8.95 g, 97% purity, 52.2 mmol), dissolved in dichloromethane (10 mL), was added and the mixture was stirred at r.t. for 16 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (6.5 mL, 42 mmol) was added and the mixture was stirred at r.t. for 48 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 18.3 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.49 min; MS (ESIpos): m/z=413 [M+H]⁺.

¹H-NMR (300 MHz, DMSO-d6) δ [ppm]: 0.000 (0.95), 0.055 (1.12), 0.822 (0.79), 0.829 (1.03), 0.873 (16.00), 0.883 (2.39), 0.911 (4.69), 0.932 (4.64), 0.994 (2.85), 1.016 (2.90), 3.762 (4.24), 4.667 (2.03), 5.680 (0.82), 8.175 (0.58), 8.192 (0.54).

Compound 16.02
methyl 2-{[4-(hydroxymethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of methyl 2-{[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate (18.3 g, approx. 31.9 mmol) in THF (780 mL), was added tetra-n-butylammoniumfluoride (48 mL, 1.0 M, 48 mmol), and the mixture was stirred at r.t. for 1 h. A sodium bicarbonate solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. The solid was triturated with ethanol to give 4.30 g of the title compound.

LC-MS (Method 1): R_t=0.66 min; MS (ESIpos): m/z=299 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.523 (0.90), 3.311 (16.00), 4.519 (5.40), 4.532 (5.60), 5.421 (1.89), 5.435 (4.13), 5.450 (1.83), 6.907 (2.02), 6.921 (2.10), 7.179 (4.42), 7.704 (1.10), 8.247 (3.52), 8.260 (3.44), 10.840 (0.74), 12.396 (1.46).

Compound 16.03
methyl 2-{[4-(chloromethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate

embedded image

To a suspension of methyl 2-{[4-(hydroxymethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate (4.79 g, 16.1 mmol) in dichloromethane (70 mL) and DMF (100 mL) was added thionyl dichloride (2.3 mL, 32 mmol) and the mixture was stirred for 72 h. A solution of sodium bicarbonate was added and the mixture was extracted with ethyl acetate. The organic phase was washed with water, dried (sodium sulfate), filtered and the solvent was removed in vacuum to give 4.46 g of the title compound as a crude product.

LC-MS (Method 1): R_t=0.90 min; MS (ESIpos): m/z=317 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.523 (1.18), 3.842 (16.00), 4.784 (7.77), 7.031 (1.30), 7.034 (1.26), 7.044 (1.25), 7.048 (1.17), 7.271 (2.54), 7.709 (0.95), 7.730 (0.79), 8.330 (2.10), 8.344 (1.97).

Compound 16.04
methyl 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of methyl 2-{[4-(chloromethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate (2.00 g, 6.31 mmol) in DMF (120 mL) was added potassium carbonate (4.36 g, 31.6 mmol) and tert-butyl piperazine-1-carboxylate (2.35 g, 12.6 mmol). The mixture was stirred at r.t. for 14 h. Further tert-butyl piperazine-1-carboxylate (290 mg) was added and the mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with dichloromethane/hexane to LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=467 [M+H]⁺.

¹H-NMR (300 MHz, DMSO-d6) δ[ppm]: 1.393 (16.00), 1.417 (1.02), 2.354 (1.79), 2.369 (1.32), 3.500 (2.12), 3.838 (5.36), 6.941 (0.53), 7.158 (1.22), 8.264 (0.74), 8.281 (0.75), 12.382 (0.53).

Compound 16.05
2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid

embedded image

To a stirred solution of methyl 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (12.0 g, 25.7 mmol) in methanol (380 mL, 9.5 mol) and THF (130 mL, 1.6 mol) was added an aqueous solution of sodium hydroxide (130 mL, 2.0 M, 260 mmol). The mixture was stirred at 70° C. for 14 h. The solution was cooled to room temperature, hydrochloric acid was added until pH 7 was reached and the solvent was removed in vacuum. Toluene and dichloromethane were added, the mixture was stirred for 10 minutes and the solvent was removed in vacuum. The solid was dried in a vacuum oven at 60° C. overnight, to give 26.4 g (purity approx. 47%) of the title compound as a crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.66 min; MS (ESIpos): m/z=453 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.396 (16.00), 3.361 (0.71), 3.409 (0.69), 7.252 (0.73), 7.696 (0.71), 7.700 (0.70), 7.717 (0.58), 7.721 (0.61), 8.293 (0.59), 8.306 (0.56).

Compound 16.06
tert-butyl 4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

To a stirred solution of 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (26.4 g, approx. 25.7 mmol) in DMA (250 mL) was added DIPEA (18 mL, 100 mmol), (1Z)—N′-hydroxyethanimidamide (2.85 g, 38.5 mmol) and PyBOP (20.0 g, 38.5 mmol). The mixture was stirred at r.t. for 1 h. An aqueous sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum to give a solid. The solid was triturated with dichloromethane to give 12.1 g of the title compound.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=509 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.172 (0.56), 1.394 (16.00), 1.822 (4.66), 1.986 (0.98), 2.344 (0.81), 2.357 (1.19), 2.369 (0.85), 3.324 (4.96), 3.336 (0.82), 3.348 (0.97), 3.362 (0.65), 5.755 (3.12), 7.193 (0.72), 8.258 (0.74), 8.272 (0.71).

Compound 16.07
6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (8.30 g, 16.9 mmol), Compound 16.07 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 8.50 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.92 min; MS (ESIpos): m/z=391 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.952 (0.54), 2.428 (15.44), 2.938 (0.58), 3.160 (16.00), 3.331 (1.01), 3.352 (1.18), 3.444 (2.47), 3.455 (1.91), 3.466 (1.15), 3.560 (3.34), 7.585 (2.37), 7.823 (1.72), 7.844 (2.03), 8.037 (1.93), 8.041 (1.88), 8.058 (1.49), 8.063 (1.63), 8.341 (2.28), 8.344 (2.31), 8.536 (1.41), 8.550 (1.38).

Compound 16.08
tert-butyl (2R,5S)-4-[(2-aminopyridin-4-yl)methyl]-2,5-dimethylpiperazine-1-carboxylate

embedded image

To a stirred suspension of 4-(bromomethyl)pyridin-2-amine hydrobromide (2.00 g, 7.46 mmol) in acetonitrile (16 mL) was added potassium carbonate and tert-butyl (2R,5S)-2,5-dimethylpiperazine-1-carboxylate (1.76 g, 8.21 mmol). The mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 1.72 g (65% yield) of the title compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=321 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.874 (1.89), 0.890 (1.97), 1.160 (2.09), 1.177 (2.13), 1.381 (1.15), 1.389 (16.00), 5.805 (1.23), 7.796 (0.77), 7.809 (0.78).

Compound 16.09
methyl 2-[(4-{[(2S,5R)-4-(tert-butoxycarbonyl)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of 1H-imidazole (72.2 mg, 1.06 mmol) and di-1H-imidazol-1-ylmethanethione (1.26 g, 90% purity, 6.37 mmol) in dichloromethane (45 mL) was added tert-butyl (2R,5S)-4-[(2-aminopyridin-4-yl)methyl]-2,5-dimethylpiperazine-1-carboxylate (1.70 g, 5.31 mmol), dissolved in dichloromethane (25 mL) at 0° C. The mixture was stirred at r.t. for 14 h. Methyl 3,4-diaminobenzoate (1.36 g, 97% purity, 7.96 mmol), dissolved in dichloromethane (30 mL) was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.18 mL, 7.4 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (0.42 mL, 2.6 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase-silicagel chromatography followed by silicagel chromatography gave 564 mg (21% yield) of the title compound.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=495 [M+H]⁺ 1H-NMR (600 MHz, DMSO-d6) δ [ppm]: 0.921 (2.33), 0.932 (2.35), 1.227 (2.34), 1.238 (2.33), 1.398 (16.00), 3.448 (0.76), 3.835 (5.47), 7.262 (0.83), 8.250 (0.76), 8.259 (0.74).

Compound 16.10
2-[(4-{[(2S,5R)-4-(tert-butoxycarbonyl)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid

embedded image

To a stirred solution of methyl 2-[(4-{[(2S,5R)-4-(tert-butoxycarbonyl)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (560 mg, 1.13 mmol) in methanol (17 mL) and THF (5.6 mL) was added an aqueous solution of sodium hydroxide (5.7 mL, 2.0 M, 11 mmol). The mixture was stirred at 70° C. for 14 h. The solution was cooled to room temperature, hydrochloric acid was added until pH 7 was reached and the solvent was removed in vacuum. Toluene and dichloromethane were added, the mixture was stirred for 10 minutes and the solvent was removed in vacuum. The solid was dried in a vacuum oven at 60° C. overnight, to give 1.15 g (purity approx. 47%) of the title compound as a crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.74 min; MS (ESIpos): m/z=481 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.916 (1.78), 0.933 (1.81), 0.980 (0.75), 0.997 (0.79), 1.227 (1.90), 1.244 (1.92), 1.394 (16.00), 8.205 (0.83), 8.218 (0.78).

Compound 16.11
tert-butyl (2R,5S)-4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)-2,5-dimethylpiperazine-1-carboxylate

embedded image

Starting with 2-[(4-{[(2S,5R)-4-(tert-butoxycarbonyl)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (1.15 g, approx. 1.12 mmol) and (1Z)—N′-hydroxyethanimidamide (124 mg, 1.68 mmol), Compound 16.11. was prepared analogously to the procedure for the preparation of Compound 16.06.

Yield: 508 mg of the title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=537 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.921 (1.98), 0.937 (2.00), 1.225 (2.06), 1.242 (2.11), 1.400 (16.00), 1.819 (4.52), 5.758 (2.55), 8.248 (0.85), 8.261 (0.82).

Compound 16.12
N-(4-{[(2S,5R)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl (2R,5S)-2,5-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (360 mg, 694 μmol), Compound 16.12 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 392 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=419 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.218 (4.02), 1.234 (4.10), 2.433 (16.00), 3.161 (0.73), 5.759 (10.36), 7.540 (1.48), 7.811 (1.53), 7.832 (1.73), 8.044 (1.83), 8.048 (1.82), 8.065 (1.47), 8.069 (1.54), 8.332 (2.19).

Compound 16.13
tert-butyl (3R)-4-[(2-aminopyridin-4-yl)methyl]-3-methylpiperazine-1-carboxylate

embedded image

To a stirred suspension of 4-(bromomethyl)pyridin-2-amine hydrobromide (2.00 g, 7.46 mmol) in acetonitrile (16 mL) was added potassium carbonate and tert-butyl (3R)-3-methylpiperazine-1-carboxylate (1.64 g, 8.21 mmol). The mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase silicagel chromatography gave 1.41 g (55% yield) of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=307 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.913 (0.82), 0.929 (0.82), 0.995 (1.59), 1.011 (1.61), 1.386 (16.00), 3.307 (1.84), 5.751 (1.86), 5.784 (0.94), 6.401 (0.75), 7.793 (0.57), 7.807 (0.57).

Compound 16.14
methyl 2-[(4-{[(2R)-4-(tert-butoxycarbonyl)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of 1H-imidazole (62.2 mg, 914 μmol) and di-1H-imidazol-1-ylmethanethione (1.18 g, 90% purity, 5.94 mmol) in dichloromethane (35 mL) was added tert-butyl (3R)-4-[(2-aminopyridin-4-yl)methyl]-3-methylpiperazine-1-carboxylate (1.40 g, 4.57 mmol), dissolved in dichloromethane (35 mL) at 0° C. The mixture was stirred at r.t. for 14 h. Further di-1H-imidazol-1-ylmethanethione (1.18 g, 90% purity, 5.94 mmol) was added and the mixture was stirred at r.t. for 14 h. Methyl 3,4-diaminobenzoate (2.04 g, 97% purity, 11.9 mmol), dissolved in dichloromethane (30 mL) was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.03 mL, 6.4 mmol) was added. The mixture was stirred at r.t. for 72 h. Further N,N′-dipropan-2-ylcarbodiimide (0.37 mL, 2.3 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase-silicagel chromatography gave 583 mg of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=481 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ[ppm]: 1.026 (2.36), 1.039 (2.36), 1.394 (16.00), 3.839 (6.00), 5.752 (3.00), 7.190 (0.86), 8.253 (0.81), 8.264 (0.76).

Compound 16.15
2-[(4-{[(2R)-4-(tert-butoxycarbonyl)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid

embedded image

To a stirred solution of methyl 2-[(4-{[(2R)-4-(tert-butoxycarbonyl)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (580 mg, 1.21 mmol) in methanol (18 mL, 440 mmol) and THF (6.0 mL, 74 mmol) was added an aqueous solution of sodium hydroxide (6.0 mL, 2.0 M, 12 mmol). The mixture was stirred at 70° C. for 14 h. The solution was cooled to room temperature, hydrochloric acid was added until pH 7 was reached and the solvent was removed in vacuum. Toluene and dichloromethane were added, the mixture was stirred for 10 minutes and the solvent was removed in vacuum. The solid was dried in a vacuum oven at 60° C. overnight to give 1.4 g (purity: approx. 40%) of the title compound as a crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.79 min; MS (ESIpos): m/z=467 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.396 (16.00), 5.758 (3.59), 7.707 (0.70), 7.711 (0.70), 7.728 (0.58), 7.732 (0.61).

Compound 16.16
tert-butyl (3R)-4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)-3-methylpiperazine-1-carboxylate

embedded image

To a stirred solution of 2-[(4-{[(2R)-4-(tert-butoxycarbonyl)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (1.40 g, approx. 1.20 mmol) in DMA (12 mL) was added DIPEA (840 μl, 4.8 mmol), (1Z)—N′-hydroxyethanimidamide (133 mg, 1.80 mmol) and PyBOP (937 mg, 1.80 mmol). The mixture was stirred at room temperature for 1 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-Silicagel chromatography gave 514 mg of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=523 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.026 (2.27), 1.036 (1.39), 1.042 (2.35), 1.054 (1.99), 1.071 (0.87), 1.393 (16.00), 1.821 (5.17), 5.755 (2.41), 7.199 (1.00), 8.249 (0.93), 8.262 (0.88).

Compound 16.17
tert-butyl (3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

A mixture of tert-butyl (3R)-4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)-3-methylpiperazine-1-carboxylate (510 mg, 976 μmol) and sodium acetate (88.1 mg, 1.07 mmol) in 1-propanol (20 mL) and water (10 mL) was heated to 100° C. for 40 h. The solvent was removed in vacuum. Aminophase-silicagel chromatography gave 310 mg (57% yield) of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=505 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.029 (2.19), 1.045 (2.23), 1.396 (16.00), 2.085 (3.57), 2.398 (5.85), 7.206 (0.89), 8.273 (0.76), 8.286 (0.73).

Compound 16.18
6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-(4-{[(2R)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl (3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 595 μmol), Compound 16.18 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 310 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.99 min; MS (ESIpos): m/z=405 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.473 (1.02), 2.432 (16.00), 3.332 (0.67), 3.371 (0.83), 3.486 (0.73), 3.488 (0.73), 3.498 (0.72), 5.755 (1.37), 7.575 (1.61), 7.815 (1.54), 7.836 (1.75), 8.042 (1.77), 8.046 (1.80), 8.063 (1.40), 8.067 (1.49), 8.335 (2.06), 8.339 (2.02), 8.527 (0.95), 8.540 (0.87).

Compound 16.19
tert-butyl 4-[(2-aminopyridin-4-yl)methyl]-3,3-dimethylpiperazine-1-carboxylate

embedded image

To a stirred solution of 4-(bromomethyl)pyridin-2-amine hydrobromide (2.50 g, 9.33 mmol) in DMF (30 mL) was added potassium carbonate (5.16 g, 37.3 mmol) and tert-butyl 3,3-dimethylpiperazine-1-carboxylate (2.40 g, 11.2 mmol). The mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave 2.20 g (74% yield) of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=321 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.004 (9.22), 1.027 (0.55), 1.042 (0.53), 1.390 (16.00), 2.276 (0.67), 3.126 (0.69), 3.335 (3.19), 5.788 (1.25), 6.414 (0.98), 6.423 (0.68), 6.435 (0.58), 7.775 (0.78), 7.777 (0.73), 7.788 (0.73), 7.790 (0.73).

Compound 16.20
4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine

embedded image

To a stirred suspension of methyl 3,4-diaminobenzoate (10.0 g, 60.2 mmol) and N-hydroxyethanimidamide (10.6 g, 95% purity, 135 mmol) in dioxane (20 mL) was added caesium carbonate (19.6 g, 60.2 mmol) and the mixture was stirred at 110° C. for 2 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum to give a solid that was triturated with methanol to give 8.00 g (70% yield) of the title compound.

LC-MS (Method 2): R_t=0.67 min; MS (ESIpos): m/z=191 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.308 (16.00), 4.831 (2.74), 5.429 (3.11), 6.583 (2.69), 6.603 (2.81), 7.148 (1.50), 7.153 (1.72), 7.169 (1.30), 7.174 (1.62), 7.212 (3.04), 7.217 (2.53).

Compound 16.21
N-{4-[(2,2-dimethylpiperazin-1-yl)methyl]pyridin-2-yl}-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 3,3-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (980 mg, 1.89 mmol), Compound 16.21 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 1.06 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=419 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.431 (16.00), 2.523 (0.93), 7.616 (1.03), 7.824 (1.32), 7.845 (1.53), 8.047 (1.81), 8.051 (1.86), 8.068 (1.46), 8.072 (1.56), 8.342 (1.90).

Compound 16.22
2-(4-ethylpyridin-2-yl)-1H-isoindole-1,3(2H)-dione

embedded image

To a stirred solution of 4-ethylpyridin-2-amine (20.0 g, 164 mmol) in dichloromethane (600 mL) was added benzene-1,2-dicarbonyl dichloride (26 mL, 180 mmol), followed by triethylamine (60 mL, 430 mmol) with water bath cooling. The mixture was stirred at r.t. for 1 h. The mixture was washed with water, the organic phase was separated, dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 37.0 g (90% yield) of the title compound.

LC-MS (Method 5): R_t=3.21 min; MS (ESIpos): m/z=253 [M+H]⁺.

Compound 16.23
(rac)-2-{4-[1-bromoethyl]pyridin-2-yl}-1H-isoindole-1,3(2H)-dione

embedded image

To a stirred suspension of 2-(4-ethylpyridin-2-yl)-1H-isoindole-1,3(2H)-dione (24.7 g, 97.9 mmol) and NBS (19.0 g, 107 mmol) in dichloroethane (300 mL) was added AIBN (800 mg, 4.87 mmol), and the mixture was stirred at reflux for 1 h. The mixture was washed with water, the organic phase was separated, dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Diethyl ether was added and the mixture was stirred at r.t. for 19 h. A precipitated solid was collected by filtration to give 27.8 g (86% yield) of the title compound.

LC-MS (Method 5): R_t=3.34 min; MS (ESIpos): m/z=331 [M+H]⁺.

Compound 16.24
(rac)-tert-butyl 4-[1-{2-[(2-{[4-(tert-butoxycarbonyl)piperazin-1-yl]carbonyl}benzoyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

To a stirred suspension of (rac)-2-{4-[1-bromoethyl]pyridin-2-yl}-1H-isoindole-1,3(2H)-dione (41.7 g, 126 mmol) in acetonitrile (200 mL) was added potassium carbonate (22.0 g, 159 mmol) and tert-butyl piperazine-1-carboxylate (53.0 g, 285 mmol). The mixture was stirred at 75° C. for 1 h. The solvent was removed in vacuum. Water was added and the mixture was extracted with diethyl ether. The organic phase was washed with half saturated sodium chloride solution, dried (magnesium sulfate) and the solvent was removed in vacuum to give 91.6 g of the title compound as a crude product, that was used for the next step without further purification.

LC-MS (Method 5): R_t=3.36 min; MS (ESIpos): m/z=623 [M+H]⁺.

Compound 16.25
(rac)-tert-butyl 4-[1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of (rac)-tert-butyl 4-[1-{2-[(2-{[4-(tert-butoxycarbonyl)piperazin-1-yl]carbonyl}benzoyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (91.6 g, approx. 113 mmol) in dioxane (350 mL) was added hydrazine hydrate (50 mL, 1.0 mol), and the mixture was stirred at reflux for 3 h. The mixture was cooled to r.t., and a precipitate was removed by filtration. Diethyl ether was added and the mixture was washed with water. The organic phase was separated, dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 32.35 g of the title compound.

LC-MS (Method 5): R_t=0.71 min; MS (ESIpos): m/z=307 [M+H]⁺.

Compound 16.26
(rac)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl (rac)-4-[1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (20.1 g, 39.8 mmol), Compound 16.26 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 23.3 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=405 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.432 (16.00), 7.568 (1.28), 7.818 (1.34), 7.839 (1.61), 8.045 (1.77), 8.048 (1.67), 8.066 (1.34), 8.070 (1.39), 8.338 (1.75), 8.342 (1.72).

Compound 16.27
6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (100 mg, 198 μmol), Compound 16.27 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 100 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=405 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.085 (0.81), 1.104 (0.65), 1.678 (1.45), 2.434 (16.00), 3.367 (0.61), 3.385 (0.67), 3.452 (0.88), 5.760 (0.52), 7.583 (1.64), 7.830 (1.64), 7.851 (1.88), 8.057 (2.08), 8.060 (1.97), 8.078 (1.56), 8.082 (1.62), 8.347 (2.10), 8.350 (2.06), 8.573 (1.12), 8.586 (1.05).

Compound 16.28
N-[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine

embedded image

To a stirred solution of 1H-imidazole (143 mg) and di-1H-imidazol-1-ylmethanethione (2.18 g, 90% purity) in dichloromethane (10 mL) was added 4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-amine (2.50 g, see Compound 04.03), dissolved in dichloromethane (20 mL) at 0° C. The mixture was stirred at r.t. for 18 h. 4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine (2.06 g, 97. % purity; see Compound 16.20), dissolved in dichloromethane (20 mL), was added and the mixture was stirred at r.t. for 16 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was separated and filtered through a silicagel to give 4.7 g of a solid that was dissolved in dichloromethane (50 mL). N,N′-dipropan-2-ylcarbodiimide (3.0 ml) was added and the mixture was stirred at r.t. for 16 h. Further N,N′-dipropan-2-ylcarbodiimide (3.0 ml) was added and the mixture was stirred for 3 h. The solvent was removed in vacuum. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with ethanol to give 1.7 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.52 min; MS (ESIpos): m/z=436 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.150 (13.83), 0.970 (1.53), 0.978 (16.00), 2.424 (3.52), 4.777 (1.65).

Compound 16.29
(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methanol

embedded image

To a stirred solution of crude N-[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine (1.70 g) in THF (51 mL) and ethanol (17 mL), was added aqueous hydrochloric acid (5.8 ml, 2.0 M) and the solution was stirred for 1 h. Water was added and the mixture was extracted with ethyl acetate and hexane (1:1 mixture). The organic phase was removed. An aqueous 2 M solution of sodium hydroxide was added to the aqueous phase until pH 6.5 was reached, and the solution was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. The gummy material was suspended in chloroform and concentrated in vacuum for two times to give 2.2 g of the crude product, that was used for the next step without further purification.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=322 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.688 (16.00), 2.390 (12.03), 4.529 (4.87), 6.898 (1.15), 6.901 (1.15), 6.912 (1.17), 6.915 (1.15), 7.498 (1.28), 7.519 (1.51), 7.552 (0.99), 7.744 (1.31), 7.749 (1.31), 7.765 (1.08), 7.769 (1.09), 8.084 (1.35), 8.225 (1.78), 8.237 (1.77).

Compound 16.30
N-[4-(chloromethyl)pyridin-2-yl]-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine

embedded image

To a suspension of crude (2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methanol (2.20 g) in dichloromethane (100 mL) was added thionyl dichloride (570 μl) and the mixture was stirred for 19 h. An aqueous solution of sodium bicarbonate was added and the mixture was extracted with a mixture of dichloromethane and methanol (10:1) and afterwards with a mixture of chloroform and methanol (5:1). The organic phases were combined, dried (sodium sulfate), filtered and the solvent was removed in vacuum. The residue was triturated with ethanol to give 900 mg of the title compound.

LC-MS (Method 1): R_t=0.89 min; MS (ESIpos): m/z=340 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.155 (5.25), 2.399 (16.00), 4.793 (6.94), 5.134 (1.31), 7.049 (0.91), 7.062 (0.91), 7.272 (2.11), 8.352 (1.10), 8.365 (1.03).

Compound 17.01
tert-butyl 4-[(2-{[6-({[(cyclopropylcarbonoimidoyl)amino]oxy}carbonyl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (18.6 g, approx. 19.3 mmol) in DMA (440 mL) was added DIPEA (67 mL, 390 mmol), N′-hydroxycyclopropanecarboximidamide (5.80 g, 57.9 mmol) and PyBOP (15.1 g, 29.0 mmol). The mixture was stirred at r.t. for 14 h. Further PyBOP (15.1 g, 29.0 mmol) was added and the mixture was stirred at r.t. for 1 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 7.50 g of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=535 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.743 (0.52), 0.749 (0.69), 0.764 (0.53), 0.770 (0.72), 0.830 (0.73), 0.835 (0.76), 0.842 (0.81), 0.849 (0.68), 1.394 (16.00), 1.513 (0.46), 2.083 (4.98), 2.343 (0.85), 2.356 (1.30), 2.369 (0.95), 3.323 (3.31), 3.502 (1.61), 5.755 (1.09), 7.182 (0.88), 8.259 (0.78), 8.272 (0.74).

Compound 17.02
6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (6.40 g, 12.4 mmol), Compound 17.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 6.11 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=417 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.985 (0.72), 0.995 (2.52), 1.002 (2.55), 1.007 (2.47), 1.014 (2.28), 1.023 (0.89), 1.107 (0.89), 1.116 (2.27), 1.122 (1.78), 1.127 (1.43), 1.137 (2.33), 1.143 (1.84), 2.180 (0.86), 2.188 (0.94), 2.201 (1.58), 2.213 (0.81), 2.221 (0.74), 3.159 (1.66), 3.165 (16.00), 3.218 (1.33), 3.381 (2.84), 3.565 (2.36), 7.533 (2.14), 7.785 (1.79), 7.806 (2.06), 7.994 (2.23), 7.999 (1.96), 8.016 (1.68), 8.019 (1.65), 8.305 (2.44), 8.505 (1.49), 8.517 (1.38).

Compound 17.03
methyl 2-[(4-{[(methylsulfonyl)oxy]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of methyl 2-{[4-(hydroxymethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate (4.30 g, 14.4 mmol) and DIPEA (25 mL, 140 mmol) in dichloromethane (71 mL), methanesulfonyl chloride (1.7 mL, 22 mmol) was added at 0° C. The mixture was stirred at r.t. for 1 h. Further methanesulfonyl chloride (1.7 mL, 22 mmol) was added and the mixture was stirred at r.t. for 2 h. Aqueous sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate), filtered, and the solvent was removed in vacuum to give 8.10 g of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.11 min; MS (ESIneg): m/z=375 [M−H]⁺.

Compound 17.04
methyl 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of methyl 2-[(4-{[(methylsulfonyl)oxy]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (7.50 g, approx. 15.9 mmol) in DMF (120 mL) was added potassium carbonate (11.0 g, 79.7 mmol) and 1-(2-chlorophenyl)piperazine (6.27 g, 31.9 mmol). The mixture was stirred at r.t. for 48 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 1.65 g of the title compound.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=477 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.156 (0.92), 1.174 (2.03), 1.192 (1.05), 1.987 (3.67), 2.523 (1.28), 2.598 (2.17), 2.609 (1.96), 2.730 (7.89), 2.732 (7.36), 2.890 (9.81), 3.023 (2.71), 3.571 (4.51), 3.842 (16.00), 3.845 (5.51), 4.020 (0.79), 4.038 (0.80), 6.982 (0.90), 6.993 (0.85), 7.017 (0.89), 7.021 (0.95), 7.036 (1.45), 7.040 (1.55), 7.055 (1.06), 7.059 (1.11), 7.159 (1.28), 7.163 (1.32), 7.180 (1.94), 7.183 (1.64), 7.207 (2.42), 7.279 (1.26), 7.283 (1.30), 7.298 (1.23), 7.302 (1.51), 7.303 (1.31), 7.318 (0.81), 7.322 (0.93), 7.389 (2.38), 7.393 (2.27), 7.409 (2.01), 7.413 (1.82), 7.716 (0.67), 7.952 (1.30), 8.157 (0.67), 8.284 (1.38), 8.297 (1.33), 12.381 (1.03).

Compound 17.05
2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid

embedded image

To a stirred solution of methyl 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (3.00 g, 6.29 mmol) in methanol (130 mL) and THF (42 mL) was added an aqueous solution of sodium hydroxide (42 mL, 2.0 M, 85 mmol). The mixture was stirred at 70° C. for 14 h. Water was added and the mixture was stirred for 10 minutes and extracted with ethyl acetate. The organic phase was concentrated in vacuum to give 3.1 g of the title compound as a crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.80 min; MS (ESIpos): m/z=463 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.715 (1.69), 2.296 (1.01), 2.327 (0.61), 2.518 (4.70), 2.523 (3.85), 2.601 (8.03), 2.665 (0.92), 2.669 (1.02), 2.673 (0.79), 3.022 (10.32), 3.167 (16.00), 3.567 (15.58), 3.625 (0.72), 3.844 (0.68), 5.756 (9.34), 6.919 (5.22), 6.922 (5.09), 6.932 (5.24), 6.935 (5.17), 7.009 (3.42), 7.013 (3.64), 7.027 (5.24), 7.032 (5.50), 7.047 (4.23), 7.051 (4.39), 7.156 (5.01), 7.160 (5.24), 7.176 (7.20), 7.180 (6.40), 7.260 (1.62), 7.264 (1.80), 7.274 (5.92), 7.278 (6.21), 7.293 (5.97), 7.296 (6.19), 7.298 (5.25), 7.302 (1.47), 7.313 (3.23), 7.317 (3.23), 7.383 (8.45), 7.387 (8.10), 7.403 (8.10), 7.407 (7.33), 7.498 (3.31), 7.719 (3.82), 7.723 (3.74), 7.743 (3.49), 8.029 (2.18), 8.246 (8.37), 8.260 (7.70).

Compound 17.06
N-[({2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]cyclopropanecarboximidamide

embedded image

To a stirred solution of 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (200 mg, approx. 432 μmol) in DMA (5 mL) was added DIPEA (450 μl, 2.6 mmol), N′-hydroxycyclopropanecarboximidamide (38 μl, 97% purity, 650 μmol) and PyBOP (337 mg, 648 μmol). The mixture was stirred at r.t. for 14 h. Further PyBOP (337 mg, 648 μmol) and DIPEA (450 μl, 2.6 mmol) was added and the mixture was stirred at r.t. for 14 h. Water was added and a solid precipitated and was collected by filtration. A potassium carbonate solution was added to the solid and the mixture was extracted with dichloromethane/methanol (20:1). The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum to give a solid. The solid was triturated with warm ethanol to give 160 mg of the title compound as a crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.25 min; MS (ESIneg): m/z=543 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.732 (1.54), 0.744 (4.70), 0.751 (6.32), 0.759 (4.26), 0.766 (4.71), 0.771 (6.47), 0.780 (3.04), 0.787 (0.83), 0.795 (0.71), 0.800 (0.86), 0.816 (0.90), 0.823 (2.80), 0.831 (6.59), 0.837 (7.03), 0.844 (7.27), 0.850 (6.17), 0.855 (1.98), 0.863 (1.71), 1.090 (0.84), 1.107 (0.42), 1.481 (1.17), 1.494 (2.25), 1.503 (2.23), 1.507 (1.42), 1.515 (4.12), 1.523 (1.25), 1.528 (2.06), 1.536 (1.99), 1.549 (0.86), 2.322 (0.73), 2.327 (1.03), 2.331 (0.73), 2.523 (2.38), 2.664 (0.88), 2.669 (1.12), 2.674 (0.84), 3.024 (10.36), 3.391 (0.41), 3.481 (1.00), 3.573 (16.00), 6.242 (4.83), 6.959 (0.56), 6.976 (4.07), 6.989 (4.02), 7.017 (2.92), 7.021 (3.04), 7.036 (5.10), 7.039 (5.42), 7.055 (3.62), 7.058 (3.80), 7.159 (4.43), 7.163 (4.71), 7.180 (6.40), 7.183 (5.91), 7.236 (6.35), 7.279 (3.73), 7.283 (4.05), 7.298 (4.56), 7.302 (5.12), 7.318 (2.55), 7.322 (2.67), 7.389 (7.59), 7.393 (7.42), 7.408 (6.71), 7.412 (6.50), 7.810 (1.76), 8.174 (0.81), 8.277 (7.27), 8.290 (6.89), 10.774 (0.64), 12.323 (1.01).

Compound 18.01
N-hydroxy-3-methylbutanimidamide

embedded image

To a stirred mixture of 3-methylbutanenitrile (1.00 g, 98% purity, 11.8 mmol) and hydroxylamine hydrochloride (1.84 g, 98% purity, 25.9 mmol) in ethanol (12 mL) was added triethyl amine (3.8 mL, 27 mmol), and the mixture was heated to 75° C. for 14 h. The mixture was cooled to r.t. and a solid was removed by filtration. The solution was concentrated in vacuum. Ethyl acetate was added to the residue, the mixture was stirred and again, a solid was removed by filtration. The solution was concentrated in vacuum to give 0.60 g (44% yield) of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=0.53 min; MS (ESIpos): m/z=117 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.842 (15.79), 0.858 (16.00), 0.874 (0.68), 1.793 (2.16), 1.795 (2.19), 1.812 (4.22), 1.891 (0.72), 1.907 (1.14), 1.911 (0.68), 1.988 (0.44), 5.354 (1.03), 8.709 (0.81).

Compound 18.02
tert-butyl 4-[(2-{[6-({[(3-methylbutanimidoyl)amino]oxy}carbonyl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (400 mg, approx. 407 μmol) in NMP (10 mL) was added DIPEA (1.4 mL, 8.1 mmol), crude N-hydroxy-3-methylbutanimidamide (142 mg) and PyBOP (635 mg, 1.22 mmol). The mixture was stirred at room temperature for 1 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 190 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=551 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.929 (3.45), 0.944 (3.59), 1.396 (16.00), 1.713 (2.29), 1.721 (2.32), 1.729 (6.21), 1.738 (2.36), 1.746 (2.41), 1.989 (1.27), 2.348 (0.91), 2.360 (1.35), 2.372 (0.97), 2.992 (1.59), 2.998 (1.06), 3.001 (2.44), 3.008 (4.48), 3.012 (2.08), 3.015 (2.15), 3.018 (4.50), 3.021 (1.61), 3.025 (2.43), 3.028 (1.02), 3.034 (1.54), 3.351 (1.14), 3.505 (1.50), 7.187 (0.82), 8.259 (0.67), 8.273 (0.66).

Compound 18.03
tert-butyl 4-{[2-({6-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

A mixture of tert-butyl 4-[(2-{[6-({[(3-methylbutanimidoyl)amino]oxy}carbonyl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (190 mg, 345 μmol) and sodium acetate (31.1 mg, 380 μmol) in 1-propanol (9 mL) and water (4.5 mL) was heated to 100° C. for 14 h. The solvent was removed in vacuum. Silicagel chromatography gave 133 mg (72% yield) of the title compound.

LC-MS (Method 2): R_t=1.51 min; MS (ESIpos): m/z=533 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.974 (5.62), 0.991 (5.63), 1.396 (16.00), 1.712 (2.85), 1.721 (3.16), 1.729 (7.23), 1.737 (3.05), 1.746 (2.79), 2.327 (0.58), 2.349 (1.21), 2.362 (1.74), 2.374 (1.25), 2.523 (1.53), 2.624 (1.61), 2.641 (1.47), 2.990 (1.91), 3.000 (3.08), 3.006 (5.08), 3.010 (3.00), 3.017 (5.10), 3.023 (2.87), 3.033 (1.74), 3.351 (1.62), 3.511 (2.00), 7.193 (0.59), 8.279 (0.76), 8.292 (0.71).

Compound 18.04
6-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (133 mg, 250 μmol), Compound 18.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 139 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=433 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.979 (15.36), 0.995 (16.00), 1.720 (5.48), 1.729 (5.52), 1.737 (14.93), 1.745 (5.57), 1.754 (5.66), 2.117 (0.80), 2.134 (1.03), 2.151 (0.79), 2.327 (0.57), 2.523 (1.24), 2.661 (4.05), 2.669 (1.10), 2.678 (3.82), 3.001 (4.02), 3.004 (1.82), 3.007 (2.55), 3.010 (5.85), 3.017 (11.15), 3.021 (4.90), 3.024 (4.97), 3.027 (11.03), 3.031 (3.65), 3.034 (5.78), 3.038 (2.36), 3.040 (1.75), 3.044 (3.67), 3.386 (1.76), 3.565 (1.12), 3.910 (0.94), 7.533 (1.44), 7.805 (1.18), 7.826 (1.36), 8.047 (1.40), 8.052 (1.43), 8.069 (1.17), 8.073 (1.22), 8.346 (1.72), 8.519 (0.95), 8.532 (0.93).

Compound 18.05
methyl 2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate hydrochloride

embedded image

Starting with methyl 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (5.00 g, 10.7 mmol), Compound 18.05 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 5.20 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.92 min; MS (ESIpos): m/z=367 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.518 (1.07), 2.523 (0.74), 3.892 (16.00), 7.543 (1.71), 7.726 (1.47), 7.747 (1.72), 7.949 (1.93), 7.952 (1.99), 7.969 (1.57), 7.973 (1.65), 8.258 (1.94), 8.261 (1.92), 8.514 (0.98), 8.527 (0.95).

Compound 18.06
methyl 2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate

embedded image

To a stirred solution of methyl 2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carboxylate hydrochloride (2.10 g, approx. 5.21 mmol) in DMA (85 mL) was added DIPEA (3.6 mL, 21 mmol), cyclopropanecarboxylic acid (650 μl, 95% purity, 7.8 mmol) and PyBOP (4.07 g, 7.82 mmol). The mixture was stirred at room temperature for 14 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with dichloromethane/methanol (20:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography followed by trituration with ethanol/water (1:1) gave 1.45 g of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=435 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.677 (0.96), 0.684 (2.29), 0.690 (1.36), 0.697 (1.07), 0.704 (2.77), 0.710 (2.23), 0.715 (2.35), 0.722 (2.34), 0.727 (2.83), 0.734 (1.28), 1.940 (0.57), 1.947 (0.59), 1.959 (1.02), 1.971 (0.57), 1.979 (0.53), 2.327 (0.53), 2.367 (0.92), 2.442 (0.93), 2.523 (1.60), 3.527 (5.36), 3.703 (0.84), 3.841 (16.00), 6.959 (1.16), 6.971 (1.18), 7.192 (2.36), 7.700 (0.70), 8.273 (1.99), 8.287 (1.92).

Compound 18.07
2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid

embedded image

To a stirred solution of methyl 2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylate (1.42 g, 3.27 mmol) in methanol (10 mL) and THF (26 mL) was added an aqueous solution of sodium hydroxide (15 mL, 2.0 M, 31 mmol). The mixture was stirred at 70° C. for 56 h. Hydrochloric acid was added until pH 7 was reached. The organic solvent was removed in vacuum and the aqueous mixture was lyophilized. The residue was dissolved in DMA (50 mL) and potassium carbonate (2.47 g, 17.9 mmol), cyclopropanecarboxylic acid (420 μl, 5.4 mmol) and HATU (1.77 g, 4.65 mmol) was added. The mixture was stirred at r.t. for 14 h. Water was added, the mixture was stirred for 30 minutes and the mixture was extracted with hexane. The aqueous phase was lyophilized to give 8.5 g (purity approx. 17%) of the title compound as a crude product, that was used without purification.

LC-MS (Method 2): R_t=0.59 min; MS (ESIpos): m/z=421 [M+H]⁺.

Compound 18.08
N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]-3-methylbutanimidamide

embedded image

To a stirred solution of 2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (1.20 g, approx 485 μmol) in DMA (15 mL) was added DIPEA (1.7 mL, 9.7 mmol), crude N-hydroxy-3-methylbutanimidamide (169 mg, approx. 1.46 mmol) and PyBOP (757 mg, 1.46 mmol). The mixture was stirred at room temperature for 1 h. Further crude N-hydroxy-3-methylbutanimidamide (60 mg) and PyBOP (251 mg) was added and the mixture was stirred at r.t. for 56 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 134 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=519 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.666 (0.50), 0.678 (1.55), 0.685 (3.64), 0.690 (2.19), 0.697 (1.70), 0.704 (4.39), 0.709 (3.70), 0.714 (3.96), 0.721 (3.64), 0.726 (4.32), 0.733 (1.95), 0.745 (0.44), 0.928 (15.47), 0.943 (16.00), 1.254 (0.54), 1.931 (0.44), 1.944 (0.93), 1.951 (1.02), 1.956 (0.94), 1.964 (2.24), 1.969 (2.08), 1.975 (2.46), 1.988 (5.61), 2.007 (1.11), 2.021 (1.01), 2.038 (0.62), 2.043 (0.48), 2.323 (0.75), 2.327 (1.05), 2.331 (0.87), 2.337 (0.65), 2.365 (1.56), 2.444 (1.59), 2.518 (3.06), 2.523 (2.10), 2.665 (0.64), 2.669 (0.89), 2.673 (0.64), 3.498 (1.54), 3.528 (6.67), 3.704 (1.47), 6.347 (0.62), 6.389 (1.08), 6.965 (1.37), 7.200 (3.74), 7.351 (0.68), 7.372 (0.75), 7.842 (0.72), 7.863 (0.62), 8.098 (0.72), 8.222 (1.15), 8.270 (2.80), 8.283 (2.66), 10.830 (0.76), 12.307 (1.30), 12.330 (0.82).

Compound 19.01
N-hydroxycyclopentanecarboximidamide

embedded image

To a stirred mixture of cyclopentanecarbonitrile (1.00 g, 98% purity, 10.3 mmol) and hydroxylamine hydrochloride (876 mg, 98% purity, 12.4 mmol) in ethanol (10 mL) was added triethylamine (2.2 mL, 15 mmol), and the mixture was heated to 75° C. for 14 h. The mixture was cooled to r.t., diethyl ether was added and a solid was removed by filtration. The solution was concentrated in vacuum. Diethyl ether was added to the residue, the mixture was stirred and again, a solid was removed by filtration. The solution was concentrated in vacuum to give 0.65 g of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=0.57 min; MS (ESIpos): m/z=129 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.405 (0.46), 1.410 (0.50), 1.414 (0.67), 1.417 (0.65), 1.421 (0.89), 1.425 (1.10), 1.432 (1.65), 1.441 (2.49), 1.445 (4.74), 1.448 (4.53), 1.455 (6.07), 1.458 (6.87), 1.462 (4.86), 1.465 (4.66), 1.472 (3.11), 1.475 (2.97), 1.481 (2.83), 1.483 (2.79), 1.488 (2.65), 1.495 (1.88), 1.500 (1.64), 1.505 (1.30), 1.512 (1.03), 1.517 (1.26), 1.520 (1.29), 1.526 (2.12), 1.533 (2.56), 1.535 (3.01), 1.538 (3.27), 1.541 (3.73), 1.546 (4.38), 1.549 (4.07), 1.552 (4.53), 1.554 (5.91), 1.557 (6.02), 1.559 (5.09), 1.562 (5.68), 1.566 (7.60), 1.571 (8.03), 1.576 (9.74), 1.583 (16.00), 1.587 (13.59), 1.591 (13.44), 1.597 (8.52), 1.605 (6.46), 1.609 (5.18), 1.611 (4.77), 1.618 (3.33), 1.622 (2.81), 1.628 (3.65), 1.635 (2.16), 1.638 (2.30), 1.642 (2.10), 1.646 (2.59), 1.648 (2.59), 1.653 (2.33), 1.658 (4.23), 1.663 (7.67), 1.669 (6.27), 1.677 (4.23), 1.679 (3.96), 1.688 (8.76), 1.693 (6.26), 1.703 (7.30), 1.705 (6.79), 1.707 (6.87), 1.715 (2.99), 1.718 (3.28), 1.721 (3.66), 1.726 (2.39), 1.728 (2.29), 1.732 (1.80), 1.736 (1.73), 1.739 (1.19), 1.743 (0.82), 1.885 (1.39), 1.900 (0.48), 1.905 (0.70), 1.908 (1.01), 1.914 (1.52), 1.918 (1.25), 1.920 (1.09), 1.923 (1.34), 1.925 (1.60), 1.928 (2.55), 1.933 (1.93), 1.938 (0.90), 1.941 (1.05), 1.943 (1.11), 1.947 (2.19), 1.957 (1.48), 1.961 (0.96), 1.964 (0.61), 1.969 (0.77), 1.973 (0.47), 1.976 (0.62), 1.978 (0.66), 1.980 (0.65), 2.349 (1.24), 2.351 (0.64), 2.355 (0.59), 2.358 (0.57), 2.368 (3.27), 2.376 (1.38), 2.380 (1.50), 2.382 (1.58), 2.388 (4.88), 2.396 (2.01), 2.403 (1.49), 2.409 (2.89), 2.414 (1.03), 2.423 (0.50), 2.430 (1.11), 2.496 (1.18), 2.500 (0.79), 2.517 (4.88), 2.872 (0.84), 2.889 (1.64), 2.893 (1.35), 2.895 (0.57), 2.906 (1.23), 2.910 (2.12), 2.913 (0.98), 2.926 (1.33), 2.930 (0.88), 2.946 (0.54), 5.241 (9.25), 8.733 (6.43).

Compound 19.02
N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]cyclopentanecarboximidamide

embedded image

To a stirred solution of crude 2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (1.20 g, approx. 485 μmol) in DMA (15 mL) was added DIPEA (1.7 mL, 9.7 mmol), crude N-hydroxycyclopentanecarboximidamide (187 mg, approx. 1.46 mmol) and PyBOP (252 mg, 485 μmol). The mixture was stirred at room temperature for 14 h. Further crude N-hydroxycyclopentanecarboximidamide (62 mg) and PyBOP (252 mg, 485 μmol) was added and the mixture was stirred at r.t. for 5 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 140 mg of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=531 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.667 (1.11), 0.679 (3.59), 0.686 (8.58), 0.691 (5.07), 0.699 (4.01), 0.706 (10.11), 0.710 (8.37), 0.716 (9.05), 0.723 (8.30), 0.728 (10.16), 0.735 (4.55), 0.747 (1.01), 1.236 (0.65), 1.540 (3.44), 1.552 (4.58), 1.557 (4.14), 1.639 (1.40), 1.708 (7.39), 1.718 (9.20), 1.757 (3.00), 1.824 (2.35), 1.843 (4.14), 1.863 (3.46), 1.908 (0.59), 1.929 (0.96), 1.942 (2.09), 1.949 (2.27), 1.961 (3.77), 1.973 (2.12), 1.980 (1.94), 1.992 (0.90), 2.322 (1.34), 2.327 (1.91), 2.331 (1.55), 2.373 (3.46), 2.449 (3.59), 2.523 (3.72), 2.559 (1.99), 2.580 (2.69), 2.600 (1.76), 2.664 (1.03), 2.669 (1.60), 2.674 (1.14), 3.532 (16.00), 3.703 (3.13), 5.752 (12.23), 6.268 (2.87), 6.961 (3.75), 6.973 (3.80), 7.206 (9.18), 7.369 (0.83), 7.830 (1.50), 8.212 (1.01), 8.271 (7.78), 8.285 (7.42), 10.799 (0.85), 12.308 (1.58).

Compound 20.01
N-hydroxy-2-methylbutanimidamide

embedded image

To a stirred mixture of 2-methylbutanenitrile (1.00 g, 98% purity, 11.8 mmol) and hydroxylamine hydrochloride (1.00 g, 98% purity, 14.1 mmol) in ethanol (12 mL) was added triethyl amine (2.5 mL, 18 mmol), and the mixture was heated to 75° C. for 14 h. The mixture was cooled to r.t., diethyl ether was added and a solid was removed by filtration. The solution was concentrated in vacuum. Diethyl ether was added to the residue, the mixture was stirred and again, a solid was removed by filtration. The solution was concentrated in vacuum to give 0.54 g (39% yield) of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=0.52 min; MS (ESIpos): m/z=117 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.783 (6.25), 0.789 (1.05), 0.802 (15.54), 0.808 (2.07), 0.821 (7.30), 0.826 (1.00), 0.955 (1.44), 0.972 (1.42), 1.014 (14.96), 1.032 (16.00), 1.301 (0.82), 1.317 (1.17), 1.319 (0.98), 1.335 (1.66), 1.351 (1.34), 1.353 (1.43), 1.369 (1.08), 1.489 (1.17), 1.509 (1.59), 1.522 (0.95), 1.527 (1.34), 1.543 (1.18), 1.561 (0.89), 1.903 (0.42), 1.970 (0.97), 1.987 (1.52), 2.007 (1.44), 2.024 (0.81), 5.204 (2.90), 8.644 (6.67).

Compound 20.02
N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]-2-methylbutanimidamide

embedded image

To a stirred solution of 2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (1.20 g, approx. 485 μmol) in DMA (15 mL) was added DIPEA (1.7 mL, 9.7 mmol), crude N-hydroxy-2-methylbutanimidamide (169 mg, approx. 1.46 mmol) and PyBOP (757 mg, 1.46 mmol). The mixture was stirred at room temperature for 14 h. Further crude N-hydroxy-2-methylbutanimidamide (56 mg) and PyBOP (251 mgl) was added and the mixture was stirred at r.t. for 5 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 194 mg of the title compound.

LC-MS (Method 2): R_t=0.97 min; MS (ESIpos): m/z=519 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.682 (2.06), 0.690 (4.66), 0.702 (2.35), 0.710 (5.65), 0.713 (5.14), 0.718 (5.39), 0.725 (4.78), 0.730 (5.60), 0.737 (2.45), 0.750 (0.59), 0.871 (6.74), 0.889 (16.00), 0.908 (7.36), 1.144 (13.99), 1.162 (14.42), 1.234 (0.62), 1.431 (0.85), 1.448 (1.37), 1.466 (1.96), 1.483 (1.72), 1.500 (1.05), 1.599 (1.12), 1.620 (1.55), 1.638 (1.37), 1.654 (1.12), 1.672 (0.78), 1.932 (0.57), 1.944 (1.16), 1.951 (1.28), 1.964 (2.08), 1.976 (1.21), 1.983 (1.10), 2.160 (1.08), 2.178 (1.76), 2.199 (1.64), 2.215 (0.98), 2.322 (1.12), 2.327 (1.46), 2.332 (1.17), 2.400 (1.32), 2.523 (2.65), 2.664 (0.76), 2.669 (1.07), 2.674 (0.76), 3.169 (1.42), 3.545 (2.01), 3.711 (1.32), 5.752 (4.20), 6.278 (2.99), 6.971 (2.08), 6.985 (2.13), 7.214 (3.82), 7.832 (1.62), 7.853 (1.46), 8.180 (0.80), 8.281 (2.52), 8.294 (2.51), 10.821 (0.59).

Compound 21.01
N-hydroxy-2-phenylethanimidamide

embedded image

To a stirred mixture of phenylacetonitrile (1.00 g, 98% purity, 8.37 mmol) and hydroxylamine hydrochloride (712 mg, 98% purity, 10.0 mmol) in ethanol (9 mL) was added triethyl amine (1.7 mL, 13 mmol), and the mixture was heated to 75° C. for 14 h. The mixture was cooled to r.t., diethyl ether was added and a solid was removed by filtration. The solution was concentrated in vacuum. Diethyl ether was added to the residue, the mixture was stirred and again, a solid was removed by filtration. The solution was concentrated in vacuum to give 0.98 g (78% yield) of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=0.63 min; MS (ESIpos): m/z=151 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 3.327 (2.14), 4.035 (7.91), 5.366 (2.52), 7.184 (0.84), 7.188 (0.59), 7.195 (1.50), 7.206 (1.41), 7.208 (1.14), 7.217 (1.07), 7.260 (0.81), 7.271 (16.00), 7.275 (2.33), 7.282 (9.43), 7.327 (1.32), 7.334 (0.89), 7.336 (1.18), 7.340 (1.88), 7.342 (1.67), 7.344 (1.43), 7.346 (1.39), 7.348 (1.45), 7.357 (3.49), 7.360 (2.33), 7.362 (1.84), 7.379 (0.97), 7.381 (2.35), 7.383 (3.05), 7.389 (1.05), 7.398 (1.78), 7.401 (2.45), 7.404 (1.62), 7.419 (0.99), 7.422 (0.63), 8.869 (6.19).

Compound 21.02
N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]-2-phenylethanimidamide

embedded image

To a stirred solution of crude 2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (1.20 g, approx. 485 μmol) in DMA (15 mL) was added DIPEA (1.7 mL, 9.7 mmol), crude N-hydroxy-2-phenylethanimidamide (219 mg, approx. 1.46 mmol) and PyBOP (757 mg, 1.46 mmol). The mixture was stirred at room temperature for 14 h. Further crude N-hydroxy-2-phenylethanimidamide (73 mg) and PyBOP (251 mg) was added and the mixture was stirred at r.t. for 5 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 239 mg of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=553 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.665 (1.11), 0.677 (3.37), 0.685 (8.15), 0.690 (4.78), 0.697 (3.75), 0.705 (9.57), 0.709 (8.11), 0.714 (8.57), 0.722 (8.08), 0.727 (9.45), 0.734 (4.29), 0.746 (1.03), 1.242 (0.96), 1.258 (0.84), 1.714 (0.77), 1.730 (2.22), 1.747 (0.80), 1.908 (0.61), 1.927 (0.96), 1.940 (1.88), 1.948 (2.03), 1.960 (3.56), 1.972 (1.99), 1.979 (1.80), 1.991 (0.92), 2.322 (1.57), 2.327 (2.18), 2.332 (1.80), 2.366 (3.37), 2.444 (3.25), 2.523 (4.48), 2.665 (1.26), 2.669 (1.68), 2.674 (1.26), 3.009 (1.42), 3.019 (1.45), 3.162 (0.57), 3.175 (0.65), 3.443 (16.00), 3.528 (15.08), 3.703 (3.06), 5.752 (3.22), 6.518 (2.26), 6.962 (2.95), 7.204 (8.54), 7.236 (1.80), 7.248 (1.26), 7.254 (5.47), 7.259 (1.80), 7.272 (4.29), 7.319 (6.28), 7.334 (5.40), 7.338 (12.71), 7.351 (3.25), 7.356 (7.66), 7.396 (12.56), 7.414 (7.31), 7.418 (5.36), 7.537 (0.80), 7.850 (1.34), 8.110 (1.19), 8.225 (1.88), 8.268 (7.08), 8.282 (6.66), 10.818 (1.26), 12.299 (2.07).

Compound 22.01
2-{[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]amino}-1H-benzimidazole-5-carbonitrile

embedded image

To a stirred solution of 1H-imidazole (383 mg, 5.62 mmol) and di-1H-imidazol-1-ylmethanethione (6.68 g, 90% purity, 33.7 mmol) in dichloromethane (100 mL) was added 4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-amine (6.70 g, 28.1 mmol), dissolved in dichloromethane (100 mL) at 0° C. The mixture was stirred at r.t. for 3 h. 3,4-diaminobenzonitrile (4.63 g, 97% purity, 33.7 mmol) was added and the mixture was stirred at r.t. for 1 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (4.9 mL, 32 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with warm methanol to give 3.6 g of the title compound.

LC-MS (Method 2): R_t=1.51 min; MS (ESIpos): m/z=380 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.150 (12.85), 0.970 (0.98), 0.977 (16.00), 0.985 (0.93), 3.353 (2.20), 4.777 (1.37).

Compound 22.02
2-{[4-(hydroxymethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carbonitrile

embedded image

To a stirred solution 2-{[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carbonitrile (9.00 g, 23.7 mmol) in dioxane (230 mL) was added HCl in dioxane (36 mL, 4.0 M, 140 mmol). The mixture was stirred at 50° C. for 14 h. Further HCl (10 mL, 4.0 M, 40 mmol) in dioxane was added and the mixture was stirred at 50° C. for 14 h. Sodium bicarbonate (5.0 g) was added and the mixture was stirred for 30 minutes. THF (50 mL) was added, the mixture was filtered through magnesium sulfate and the solvent was removed in vacuum. Diethyl ether was added and a solid precipitated and was collected by filtration to give 8.20 g of the title compound as a salt that was used for the next step without purification.

LC-MS (Method 1): R_t=0.67 min; MS (ESIpos): m/z=266 [M+H]⁺.

¹H-NMR (300 MHz, DMSO-d6) δ[ppm]: 0.000 (0.83), 0.178 (1.17), 0.884 (1.14), 0.993 (1.55), 3.627 (1.26), 4.650 (16.00), 7.184 (3.79), 7.205 (3.96), 7.428 (6.96), 7.728 (1.15), 7.756 (7.13), 7.761 (8.49), 7.768 (8.76), 7.796 (1.58), 8.031 (7.18), 8.420 (4.31), 8.438 (4.37).

Compound 22.03
2-{[4-(chloromethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carbonitrile

embedded image

To a suspension of 2-{[4-(hydroxymethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carbonitrile hydrochloride (6.00 g, 19.9 mmol) in dichloromethane (400 mL) and DMF (15 mL, 190 mmol) was added thionyl dichloride (2.9 mL, 40 mmol) and the mixture was stirred at r.t. for 14 h. A solution of potassium carbonate was added and the mixture was extracted with dichloromethane/methanol (20:1). A solid precipitated and was collected. The organic phase was separated, dried (sodium sulfate), filtered and the solvent was removed in vacuum to give a second solid batch. Both solids were combined and triturated with ethanol to give 4.50 g (80% yield) of the title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=284 [M+H]⁺.

¹H-NMR (300 MHz, DMSO-d6) δ[ppm]: 2.525 (1.09), 4.790 (16.00), 5.756 (2.25), 7.052 (2.82), 7.057 (2.80), 7.069 (2.89), 7.074 (2.90), 7.276 (5.26), 7.425 (2.15), 7.430 (2.17), 7.452 (3.55), 7.457 (3.57), 7.533 (1.13), 7.825 (3.89), 8.346 (4.38), 8.364 (4.23), 11.063 (1.26).

Compound 22.04
2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carbonitrile

embedded image

To a stirred solution of 2-{[4-(chloromethyl)pyridin-2-yl]amino}-1H-benzimidazole-6-carbonitrile (1.00 g, 3.52 mmol) in DMF (30 mL) was added potassium carbonate (2.44 g, 17.6 mmol) and 1-(2-chlorophenyl)piperazine (1.73 g, 8.81 mmol). The mixture was stirred at 60° C. for 2 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with ethanol to give 1.30 g (83% yield) of the title compound.

LC-MS (Method 2): R_t=1.40 min; MS (ESIpos): m/z=444 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.038 (0.69), 1.055 (1.42), 1.073 (0.75), 2.322 (0.42), 2.327 (0.59), 2.331 (0.43), 2.523 (2.21), 2.596 (8.11), 2.665 (0.63), 2.669 (0.80), 2.674 (0.58), 2.731 (0.45), 2.889 (0.56), 3.021 (9.78), 3.575 (16.00), 4.331 (0.42), 7.000 (3.25), 7.015 (5.11), 7.019 (4.03), 7.034 (4.70), 7.038 (4.89), 7.053 (3.29), 7.057 (3.44), 7.156 (3.89), 7.160 (4.13), 7.176 (5.48), 7.180 (5.06), 7.218 (8.23), 7.278 (3.35), 7.281 (3.67), 7.296 (4.01), 7.300 (4.57), 7.316 (2.30), 7.320 (2.26), 7.387 (6.39), 7.391 (6.28), 7.407 (6.65), 7.411 (6.45), 7.441 (2.92), 7.630 (0.62), 7.775 (0.77), 7.856 (1.10), 8.300 (3.08), 8.312 (3.02), 10.932 (0.69), 12.485 (0.98).

Compound 22.05
2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-hydroxy-1H-benzimidazole-6-carboximidamide

embedded image

To a stirred suspension of 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carbonitrile (500 mg, 1.13 mmol) and triethylamine (360 μl, 2.6 mmol) in DMSO (15 mL, 210 mmol) was added hydroxylamine hydrochloride (176 mg, 98% purity, 2.48 mmol). The mixture was stirred at 75° C. for 14 h. Water was added, a solid precipitated and was collected by filtration and washed with water. The solid was dissolved in ethyl acetate/ethanol (1:1), filtered and the solvent was removed in vacuum to give 670 mg of the title compound as a crude product that was used without purification.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=477 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.539 (16.00), 3.560 (0.97), 7.387 (0.73), 7.391 (0.68), 7.407 (0.52).

Compound 22.06
2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-[(cyclopropylcarbonyl)oxy]-1H-benzimidazole-6-carboximidamide

embedded image

To a stirred solution of crude 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-hydroxy-1H-benzimidazole-6-carboximidamide (330 mg, approx. 553 μmol) in DMA (5 mL) was added DIPEA (390 μl, 2.2 mmol), cyclopropanecarboxylic acid (69 μl, 95% purity, 830 μmol) and PyBOP (432 mg, 830 μmol). The mixture was stirred at room temperature for 3 h. Water was added and a solid precipitated and was collected by filtration. The solid was triturated with ethanol. Aminophase-Silicagel chromatography gave 160 mg of the title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=545 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.067 (0.54), 0.799 (0.60), 0.816 (0.63), 0.822 (0.70), 0.852 (0.92), 0.860 (1.14), 0.874 (3.79), 0.882 (7.87), 0.885 (7.27), 0.894 (8.70), 0.900 (9.26), 0.907 (3.86), 0.915 (3.95), 0.920 (7.18), 0.928 (3.13), 0.941 (0.92), 1.037 (0.57), 1.054 (1.17), 1.071 (0.70), 1.232 (2.59), 1.257 (1.11), 1.296 (0.57), 1.712 (1.20), 1.720 (1.33), 1.728 (3.26), 1.737 (1.26), 1.745 (1.20), 1.888 (0.85), 1.901 (1.71), 1.908 (1.87), 1.920 (2.94), 1.932 (1.74), 1.939 (1.55), 1.955 (1.93), 1.986 (0.44), 2.084 (0.73), 2.322 (1.42), 2.326 (1.96), 2.331 (1.36), 2.523 (4.46), 2.539 (1.52), 2.596 (8.66), 2.664 (1.77), 2.668 (2.21), 2.673 (1.71), 2.782 (1.64), 2.942 (2.15), 2.990 (2.34), 3.006 (8.70), 3.016 (11.95), 3.022 (12.02), 3.565 (16.00), 5.169 (0.54), 5.755 (0.76), 6.701 (2.88), 6.958 (4.52), 6.971 (4.52), 7.017 (3.04), 7.021 (3.13), 7.036 (5.50), 7.040 (5.38), 7.055 (3.76), 7.059 (3.73), 7.098 (0.66), 7.161 (4.71), 7.165 (4.84), 7.181 (6.61), 7.185 (5.94), 7.215 (3.42), 7.280 (3.79), 7.284 (3.98), 7.303 (5.38), 7.318 (2.94), 7.322 (2.75), 7.357 (1.23), 7.390 (8.09), 7.394 (7.65), 7.410 (8.92), 7.414 (7.84), 7.484 (1.39), 7.612 (0.63), 7.713 (1.52), 7.864 (1.64), 8.264 (4.90), 8.277 (5.03), 10.701 (2.37), 12.231 (2.75).

Compound 22.07
2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-[(3,3-dimethylbutanoyl)oxy]-1H-benzimidazole-6-carboximidamide

embedded image

To a stirred solution of 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-hydroxy-1H-benzimidazole-6-carboximidamide (330 mg, approx. 553 μmol) in DMA (5 mL) was added DIPEA (390 μl, 2.2 mmol), 3,3-dimethylbutanoic acid (110 μl, 98% purity, 830 μmol) and PyBOP (432 mg, 830 μmol). The mixture was stirred at room temperature for 3 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with dichloromethane/methanol (20:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 130 mg of the title compound.

LC-MS (Method 2): R_t=1.43 min; MS (ESIpos): m/z=575 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.040 (16.00), 2.346 (3.10), 2.598 (0.83), 3.018 (0.98), 3.025 (1.07), 3.567 (1.59), 7.036 (0.53), 7.040 (0.50), 7.058 (0.41), 7.161 (0.46), 7.165 (0.47), 7.182 (0.68), 7.185 (0.59), 7.280 (0.41), 7.284 (0.42), 7.389 (0.80), 7.393 (0.76), 7.409 (0.96), 7.413 (0.91), 8.265 (0.63), 8.279 (0.59).

Compound 23.01
tert-butyl 4-[(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-bromopyrimidine (208 mg, 1.31 mmol) in dioxane (5 mL) and water (0.9 mL) was added sodium carbonate (297 mg, 2.81 mmol) and Pd(dppf)Cl₂(115 mg, 140 μmol) CH₂Cl₂. The mixture was heated to reflux for 19 h. Another 0.5 equivalents of 4-bromopyrimidine (74 mg, 0.47 mmol) were added and the reaction mixture was stirred for 24 h at 105° C. After cooling to r.t., dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 290 mg (64% yield) of the title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=487 [M+H]⁺.

Compound 23.02
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (290 mg, 596 μmol), Compound 23.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 288 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.81 min; MS (ESIpos): m/z=387 [M+H]⁺.

Compound 23.03
(2-chloro-6-methylpyridin-4-yl)methanol

embedded image

Methyl 2-chloro-6-methylpyridine-4-carboxylate (6.50 g, 35.0 mmol) was dissolved in dry THF (110 mL). Lithium aluminium hydride (1.65 g, 43.4 mmol) was added portionwise within 60 min. The reaction mixture was stirred at room temperature for the next 1.5 hours. Afterwards 50 mL water and 100 mL of an aqueous sodium hydroxide solution (15%) were added. This mixture was stirred for another hour and extracted three times with dichloromethane. The organic phase was washed with saturated sodium carbonate solution, dried (Whatman filter) and the solvent was removed in vacuum to give 4.4 g (80% yield) of the title compound which was used without further purification.

LC-MS (Method 2): R_t=0.67 min; MS (ESIpos): m/z=158 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.352 (0.50), 1.854 (0.64), 1.859 (0.61), 2.427 (16.00), 2.437 (1.41), 2.523 (0.74), 3.158 (1.14), 3.172 (1.31), 3.386 (1.09), 4.499 (3.82), 4.513 (3.88), 5.491 (1.29), 5.506 (2.86), 5.520 (1.25), 7.185 (3.22), 7.200 (3.13).

Compound 23.04
{2-[(2,4-dimethoxybenzyl)amino]-6-methylpyridin-4-yl}methanol

embedded image

To a stirred solution of 2-chloro-6-methylpyridin-4-yl)methanol (2.10 g, 13.3 mmol) and 1-(2,4-dimethoxyphenyl)methanamine (8.0 mL, 53 mmol) in dioxane (57 mL) was added tris-(dibenzylidenaceton)-dipalladium(0) (1.22 g, 1.33 mmol), Xantphos (1.54 g, 2.66 mmol) and cesium carbonate (6.51 g, 20.0 mmol). The mixture was heated for 4 h at 100° C. under an argon atmosphere. The reaction mixture was allowed to cool down to room temperature and stirred for another 10 hours at room temperature. Ethyl acetate was added and the precipitate was filtered off. Amino phase silicagel chromatography gave 2.1 g (55% yield) of the title compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=289 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.154 (1.09), 1.172 (2.08), 1.190 (1.07), 1.612 (1.86), 1.987 (4.10), 2.202 (7.99), 2.222 (2.21), 2.332 (1.98), 2.341 (0.64), 2.437 (0.65), 2.518 (1.15), 3.568 (1.26), 3.718 (2.13), 3.721 (16.00), 3.728 (3.92), 3.757 (3.16), 3.783 (0.91), 3.789 (2.88), 3.796 (10.81), 4.017 (0.95), 4.035 (0.94), 4.291 (2.41), 4.297 (2.61), 4.305 (2.61), 4.312 (2.25), 5.123 (0.61), 5.137 (1.33), 5.147 (1.21), 5.151 (1.05), 6.253 (3.87), 6.425 (1.12), 6.431 (1.02), 6.446 (1.29), 6.452 (1.11), 6.497 (0.71), 6.502 (0.75), 6.515 (1.01), 6.527 (0.97), 6.530 (2.54), 6.536 (1.79), 7.105 (1.64), 7.125 (1.51), 7.306 (0.68), 7.311 (0.85), 7.320 (0.79), 7.325 (0.77), 7.327 (0.69).

Compound 23.05
4-(bromomethyl)-6-methylpyridin-2-amine hydrobromide

embedded image

{2-[(2,4-dimethoxybenzyl)amino]-6-methylpyridin-4-yl}methanol (1.96 g, 6.80 mmol) was dissolved in aqueous hydrobromic acid (48%; 7.7 mL) and stirred for 3 h at 120° C. The reaction mixture was cooled down with ice water and the precipitate was filtered off. The precipitate was washed with acetone. Ethanol was added. The further precipitated solid was filtered off and combined with the first precipitate and discarded. The pH of the aqueous filtrate was brought to a basic range with saturated soda solution, extracted with ethyl acetate and dichloro methane. The combined organic phases were dried (Whatman filter) and the solvent was removed in vacuum to give 500 mg (26% yield) of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=307 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.173 (0.74), 1.368 (0.64), 1.385 (16.00), 1.988 (1.43), 2.189 (3.79), 2.266 (0.77), 2.279 (1.12), 2.292 (0.82), 3.305 (0.85), 3.323 (5.02), 5.736 (1.04), 6.187 (0.80), 6.277 (0.85).

Compound 23.06
tert-butyl 4-[(2-amino-6-methylpyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred suspension of 4-(bromomethyl)-6-methylpyridin-2-amine hydrobromide (920 mg, 3.26 mmol) in acetonitrile (6.9 mL) was added potassium carbonate (1.35 g, 9.79 mmol) and tert-butyl piperazine-1-carboxylate (668 mg, 3.59 mmol). The mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 1.00 g (100% yield) of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=307 [M+H]⁺.

Compound 23.07
tert-butyl 4-[(2-methyl-6-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (63.5 mg, 933 μmol) and di-1H-imidazol-1-ylmethanethione (907 mg, 5.09 mmol) in dichloromethane (30 mL) was added tert-butyl 4-[(2-amino-6-methylpyridin-4-yl)methyl]piperazine-1-carboxylate (1.30 g, 4.24 mmol), dissolved in dichloromethane (30 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (1.19 g, 5.09 mmol) dissolved in dichloromethane (30 mL), was added and the mixture was stirred at r.t. for 5 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate), and filtered. N,N′-dipropan-2-ylcarbodiimide (920 μl, 5.9 mmol) was added. The mixture was stirred at r.t. for 24 h. Further N,N′-dipropan-2-ylcarbodiimide (460 μl, 2.95 mmol) was added and the mixture was stirred at r.t. for 56 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Silicagel chromatography gave 1.40 g (60% yield) of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.51 min; MS (ESIpos): m/z=549 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.035 (1.25), 1.052 (2.99), 1.070 (1.37), 1.241 (0.80), 1.289 (1.14), 1.301 (10.12), 1.385 (16.00), 1.389 (6.94), 1.392 (13.65), 2.193 (3.72), 2.267 (0.78), 2.280 (1.14), 2.292 (0.84), 2.323 (1.05), 2.327 (1.18), 2.331 (1.11), 2.337 (1.25), 2.349 (0.79), 2.399 (0.61), 2.518 (2.12), 2.523 (1.51), 2.530 (2.10), 2.728 (0.85), 2.888 (1.05), 3.267 (1.73), 3.307 (1.04), 3.422 (0.66), 3.435 (1.71), 3.439 (1.67), 3.452 (0.61), 4.358 (0.69), 6.199 (0.74), 6.284 (0.80), 6.761 (0.62), 6.984 (0.59).

Compound 23.08
tert-butyl 4-[(2-methyl-6-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-methyl-6-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (700 mg, 1.28 mmol) and 4-bromopyrimidine (365 mg, 2.30 mmol) in dioxane (6 mL) and water (1.2 mL) was added sodium carbonate (406 mg, 3.83 mmol) and Pd(dppf)Cl₂(156 mg, 191 μmol). The mixture was heated to reflux for 24 h. Further 4-bromopyrimidine (101 mg, 0.64 mmol) was added and the mixture was heated to reflux for 4 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 130 mg (20% yield) of the title compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=501 [M+H]⁺.

Compound 23.09
N-[6-methyl-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-methyl-6-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (130 mg, 260 μmol), Compound 23.09 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 137 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.89 min; MS (ESIpos): m/z=401 [M+H]⁺.

Compound 23.10
{2-[(diphenylmethylidene)amino]-6-(trifluoromethyl)pyridin-4-yl}methanol

embedded image

To a stirred solution of (2-chloro-6-trifluoromethyl-pyridin-4-yl)-methanol: (10.0 g, 47.3 mmol) and -1,1-diphenylmethanimine (16 mL, 95 mmol) in dioxane (340 mL) was added tris-(dibenzylidenaceton)-dipalladium(0) (5.89 g, 9.45 mmol), (R)-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (5.89 g, 9.45 mmol) and cesium carbonate (38.5 g, 118 mmol). The mixture was heated overnight at 80° C. under an argon atmosphere. The reaction mixture was allowed to cool down to room temperature. The solvent was removed in vacuo and Amino phase silicagel chromatography gave 14.6 g (87% yield) of the title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=357 [M+H]⁺.

Compound 23.11
[2-amino-6-(trifluoromethyl)pyridin-4-yl]methanol

embedded image

{2-[(diphenylmethylidene)amino]-6-(trifluoromethyl)pyridin-4-yl}methanol (14.6 g, 41.0 mmol) was dissolved in THF and 112 mL aqueous HCl (1M) were added. The reaction mixture was stirred at room temperature for 30 min. THF was removed in vacuo. The crude residue was dissolved in 1N NaOH and extracted with saturated sodium chloride solution, dried (Whatman filter) and the solvent was removed in vacuo. Amino phase silicagel chromatography gave 1.4 g (18% yield) of the title compound.

LC-MS (Method 2): R_t=0.67 min; MS (ESIpos): m/z=193 [M+H]⁺.

Compound 23.12
4-(bromomethyl)-6-(trifluoromethyl)pyridin-2-amine hydrobromide

embedded image

[2-amino-6-(trifluoromethyl)pyridin-4-yl]methanol (1.40 g, 7.29 mmol) was dissolved in aqueous hydrobromic acid (48%; 16.5 mL) and stirred for 4 h at 120° C. The reaction mixture was allowed to cool down to room temperature. The pH of the reaction mixture was brought to a basic range with saturated sodium carbonate solution. The mixture was extracted with ethyl acetate and dichloromethane. The combined organic phases were dried (Whatman filter) and the solvent was removed in vacuum to give 1.7 g (69% yield) of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=255 [M+H]⁺.

Compound 23.13
(4-{[2-amino-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

To a stirred suspension of 4-(bromomethyl)-6-(trifluoromethyl)pyridin-2-amine hydrobromide (2.10 g, 6.25 mmol) in acetonitrile (13 mL) was added potassium carbonate and cyclopropyl(piperazin-1-yl)methanone (1.06 g, 6.88 mmol). The mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 2.00 g (98% yield) of the title compound.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=329 [M+H]⁺.

Compound 23.14
cyclopropyl(4-{[2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 1H-imidazole (91.2 mg, 1.34 mmol) and di-1H-imidazol-1-ylmethanethione (1.30 g, 7.31 mmol) in dichloromethane (50 mL) was added (4-{[2-amino-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)(cyclopropyl)methanone (2.00 g, 6.09 mmol), dissolved in dichloromethane (50 mL) at 0° C. The mixture was stirred at r.t. for 14 h. Further di-1H-imidazol-1-ylmethanethione (6.09 mmol) dissolved in dichloromethane was added and the mixture was stirred at r.t. for 14 h. 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (1.71 g, 7.31 mmol) dissolved in dichloromethane (50 mL) was added and the mixture was stirred at r.t. for 56 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (2.8 mL, 18 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (1.4 mL, 9.0 mmol) was added and the mixture was stirred at r.t. for 5 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Silicagel chromatography gave 2.10 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.686 (0.81), 0.705 (1.06), 0.710 (0.83), 0.716 (0.94), 0.724 (0.85), 0.728 (0.99), 1.035 (0.79), 1.052 (1.78), 1.065 (16.00), 1.070 (1.68), 1.272 (5.52), 1.289 (1.55), 1.301 (13.37), 3.439 (0.42), 3.452 (0.42), 3.654 (1.77), 3.942 (2.75), 4.360 (0.53), 7.370 (0.86).

Compound 23.15
(rac)-tert-butyl 4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (502 mg, 7.37 mmol) and di-1H-imidazol-1-ylmethanethione (6.56 g, 36.8 mmol) in dichloromethane (90 mL) was added (rac)-tert-butyl 4-[1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (10.3 g, 33.5 mmol), dissolved in dichloromethane (90 mL) at 0° C. The mixture was stirred at r.t. for 4 h. 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (7.84 g, 33.5 mmol), dissolved in dichloromethane (60 mL) was added and the mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (7.3 mL, 47 mmol) was added. The mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Silicagel chromatography followed by trituration with methanol/water gave 10.8 g (59% yield) of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.49 min; MS (ESIpos): m/z=549 [M+H]⁺.

Compound 23.15.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (7.69 g, see Compound 01.03) and tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate, see Compound 36.05.), Compound 23.15.01 was prepared analogously to the procedure for the preparation of Compound 23.15.

Yield: 6.9 g of the 85% pure title compound.

LC-MS (Method 2): R_t=1.48 min; MS (ESIpos): m/z=549 [M+H]⁺.

Compound 23.16
(rac)-tert-butyl 4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of (rac)-tert-butyl 4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.00 g, 1.82 mmol) and 4-bromopyrimidine hydrochloride (570 mg, 2.92 mmol) in dioxane (9 mL) and water (1.8 mL) was added sodium carbonate (773 mg, 7.29 mmol) and Pd(dppf)C₂. CH₂Cl₂(223 mg, 273 μmol). The mixture was heated to reflux for 24 h. Further 4-bromopyrimidine (180 mg) was added and the mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 0.40 g (44% yield) of the title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=501 [M+H]⁺.

Compound 23.17
(rac)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (400 mg, 799 μmol), Compound 23.17 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 420 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.85 min; MS (ESIpos): m/z=401 [M+H]⁺.

Compound 24.01
4-(2-methylpyrimidin-4-yl)-2-nitroaniline

embedded image

Starting with 4-chloro-2-methylpyrimidine (1.35 g, 10.5 mmol) and 2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (3.04 g, 11.5 mmol), Compound 24.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.85 g (78%) of the title compound.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=231 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.363 (0.42), 2.647 (16.00), 7.114 (0.45), 7.127 (3.05), 7.150 (3.09), 7.506 (0.58), 7.774 (2.31), 7.788 (2.41), 7.818 (3.12), 8.139 (0.43), 8.145 (0.42), 8.183 (1.53), 8.188 (1.51), 8.205 (1.44), 8.211 (1.44), 8.653 (3.24), 8.667 (3.22), 8.866 (3.08), 8.871 (2.96).

Compound 24.02
4-(2-methylpyrimidin-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(2-methylpyrimidin-4-yl)-2-nitroaniline (1.16 g, 5.03 mmol) in methanol (100 mL) was added palladium on carbon (10% w/w palladium) (161 mg, 151 μmol) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3 h. The mixture was filtered and the solution was concentrated in vacuum. Silicagel chromatography gave 0.61 g (100% yield) of the title compound.

LC-MS (Method 2): R_t=0.65 min; MS (ESIpos): m/z=201 [M+H]⁺.

Compound 24.03
tert-butyl 4-[(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (61.9 mg, 909 μmol) and di-1H-imidazol-1-ylmethanethione (810 mg, 4.54 mmol) in dichloromethane (50 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.33 g, 4.54 mmol), dissolved in dichloromethane (25 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-(2-methylpyrimidin-4-yl)benzene-1,2-diamine (910 mg, 4.54 mmol), dissolved in dichloromethane (25 mL), was added and the mixture was stirred at r.t. for 2 h. Water was added, and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (330 μl, 2.1 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (330 μl, 2.1 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Silicagel chromatography gave 509 mg (67% yield) of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.394 (16.00), 2.344 (1.50), 2.356 (2.01), 2.368 (1.46), 2.523 (1.06), 2.558 (0.70), 2.663 (4.99), 3.308 (0.91), 3.385 (1.13), 3.395 (0.98), 3.410 (1.12), 3.500 (2.18), 6.934 (0.54), 6.946 (0.54), 7.171 (0.84), 7.922 (0.52), 8.260 (1.01), 8.272 (0.94), 8.638 (1.13), 8.652 (1.02).

Compound 24.04
6-(2-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (504 mg, 1.01 mmol), Compound 24.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 560 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=401 [M+H]⁺.

Compound 24.05
tert-butyl 4-[(2-methyl-6-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-methyl-6-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (600 mg, 1.09 mmol) and 4-chloro-2-methylpyrimidine (253 mg, 1.97 mmol) in dioxane (5 mL) and water (1.1 mL) was added sodium carbonate (348 mg, 3.28 mmol) and Pd(dppf)C₂. CH₂Cl₂(134 mg, 164 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by preparative reverse phase HPLC (gradient of water and acetonitrile containing trifluoroacetic acid as additive) gave 132 mg (24% yield) of the title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=515 [M+H]⁺.

Compound 24.06
N-[6-methyl-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-methyl-6-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (132 mg, 256 μmol), Compound 24.06 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 150 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=415 [M+H]⁺.

Compound 24.07
(rac)-tert-butyl 4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of (rac)-tert-butyl 4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.00 g, 1.82 mmol) and 4-bromo-2-methylpyrimidine (505 mg, 2.92 mmol) in dioxane (9 mL) and water (1.8 mL) was added sodium carbonate (773 mg, 7.29 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(223 mg, 273 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 0.70 g (75% yield) of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=515 [M+H]⁺.

Compound 24.08
(rac)-6-(2-methylpyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (700 mg, 1.36 mmol), Compound 24.08 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 830 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.89 min; MS (ESIpos): m/z=415 [M+H]⁺.

Compound 25.01
6-(2-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (480 mg, 929 μmol), Compound 25.01 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 460 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.92 min; MS (ESIpos): m/z=417 [M+H]⁺.

Compound 26.01
6-(2-ethoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (460 mg, 867 μmol), Compound 26.01 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 480 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=431 [M+H]⁺.

Compound 26.02
(rac)-tert-butyl 4-[-1-(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl (rac)-4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (435 mg, 793 μmol) and 4-chloro-2-ethoxypyrimidine (176 mg, 1.11 mmol) in dioxane (5 mL) and water (0.8 mL) was added sodium carbonate (252 mg, 2.38 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(97.1 mg, 119 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 215 mg (50% yield) of the title compound.

LC-MS (Method 2): R_t=1.36 min; MS (ESIpos): m/z=545 [M+H]⁺.

Compound 26.03
(rac)-6-(2-ethoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-[1-(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (215 mg, 395 μmol), Compound 26.03 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 370 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=445 [M+H]⁺.

Compound 27.01
tert-butyl 4-{[2-({6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-chloro-2-(trifluoromethyl)pyrimidine (307 mg, 1.68 mmol) in dioxane (5 mL) and water (0.9 mL) was added sodium carbonate (297 mg, 2.81 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(115 mg, 140 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 540 mg (83% yield) of the title compound.

LC-MS (Method 2): R_t=1.40 min; MS (ESIpos): m/z=555 [M+H]⁺.

Compound 27.02
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (540 mg, 974 μmol), Compound 27.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 560 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=455 [M+H]⁺.

Compound 29.01
(rac)-tert-butyl 4-{1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl (rac)-4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.00 g, 1.82 mmol) and 4-bromo-6-(trifluoromethyl)pyrimidine (786 mg, 3.46 mmol) in dioxane (9 mL) and water (1.8 mL) was added sodium carbonate (773 mg, 7.29 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(223 mg, 273 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 330 mg (32% yield) of the title compound.

LC-MS (Method 2): R_t=1.42 min; MS (ESIpos): m/z=569 [M+H]⁺.

Compound 29.02
(rac)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine

embedded image

Starting with (rac)-tert-butyl 4-{1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (330 mg, 580 μmol), Compound 29.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 370 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=469 [M+H]⁺.

Compound 30.01
tert-butyl 4-[(2-{[6-(6-methyl pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-bromo-6-methylpyrimidine (291 mg, 1.68 mmol) in dioxane (5 mL) and water (0.9 mL) was added sodium carbonate (297 mg, 2.81 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(153 mg, 187 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 480 mg (100% yield) of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=501 [M+H]⁺.

Compound 30.02
6-(6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (480 mg, 959 μmol), Compound 30.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 600 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=401 [M+H]⁺.

Compound 30.03
(rac)-tert-butyl 4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of (rac)-tert-butyl 4-[(1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.00 g, 1.82 mmol) and 4-bromo-6-methylpyrimidine (631 mg, 3.65 mmol) in dioxane (9 mL) and water (1.8 mL) was added sodium carbonate (773 mg, 7.29 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(223 mg, 273 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 0.70 g (75% yield) of the title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=515 [M+H]⁺.

Compound 30.04
(rac) 6-(6-methylpyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (700 mg, 1.36 mmol), Compound 30.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 600 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.89 min; MS (ESIpos): m/z=415 [M+H]⁺.

Compound 31.01
tert-butyl 4-[(2-{[6-(2,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-chloro-2,6-dimethylpyrimidine (267 mg, 1.87 mmol), Compound 31.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 180 mg (37% yield) of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.395 (16.00), 2.344 (0.90), 2.357 (1.30), 2.369 (0.91), 2.461 (4.52), 2.615 (4.62), 3.348 (1.11), 3.500 (1.59), 5.759 (1.20), 7.900 (0.62), 7.904 (0.60), 8.256 (0.82), 8.270 (0.78).

Compound 31.02
6-(2,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (180 mg, 350 μmol), Compound 31.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 300 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.88 min; MS (ESIpos): m/z=415 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.050 (1.02), 1.063 (2.72), 1.067 (0.66), 2.618 (14.37), 2.754 (16.00), 3.162 (6.96), 3.341 (1.31), 3.383 (1.12), 3.393 (1.07), 3.408 (1.39), 3.425 (2.78), 3.443 (3.83), 3.455 (2.82), 3.460 (2.44), 3.484 (0.79), 3.551 (1.21), 4.424 (1.10), 7.566 (2.80), 7.588 (1.03), 7.783 (2.68), 7.805 (2.74), 8.062 (2.21), 8.220 (2.22), 8.224 (2.16), 8.241 (1.97), 8.246 (1.88), 8.536 (2.01), 8.549 (1.84), 8.586 (3.18), 8.589 (3.09).

Compound 32.01
tert-butyl 4-[(2-{[6-(5,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-chloro-5,6-dimethylpyrimidine (267 mg, 1.87 mmol), Compound 32.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 210 mg (44%) of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (16.00), 1.395 (9.02), 2.519 (2.20), 3.159 (1.79), 3.172 (1.91), 3.939 (2.61).

Compound 32.02
6-(5,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(5,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (280 mg, 544 μmol), Compound 32.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 300 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=416 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.062 (16.00), 2.318 (0.97), 2.321 (1.01), 2.335 (5.05), 2.582 (5.48), 3.161 (8.07), 3.456 (1.17), 7.592 (0.96), 7.596 (0.87), 7.613 (1.21), 7.617 (1.23), 7.780 (1.05), 7.801 (0.83), 7.914 (1.09), 7.918 (1.14), 8.988 (1.86).

Compound 33.01
6-(2,5-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2,5-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (390 mg, 758 μmol), Compound 33.01 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 400 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=415 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.409 (11.56), 2.695 (13.19), 3.057 (1.28), 3.160 (16.00), 3.468 (2.69), 5.760 (7.21), 7.582 (2.42), 7.726 (1.42), 7.730 (1.37), 7.747 (2.31), 7.750 (2.42), 7.789 (3.08), 7.811 (1.58), 8.049 (2.58), 8.053 (2.81), 8.559 (1.87), 8.572 (1.71), 8.760 (4.15).

Compound 34.01
(rac)-tert-butyl 4-[1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of (rac)-tert-butyl 4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.00 g, 1.82 mmol) and 4-chloro-6-methoxypyrimidine (422 mg, 2.92 mmol) in dioxane (9 mL) and water (1.8 mL) was added sodium carbonate (773 mg, 7.29 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(223 mg, 273 μmol). The mixture was heated to reflux for 24 h. Further 4-chloro-6-methoxypyrimidine (130 mg) was added and the mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum.

Silicagel chromatography gave 0.43 g (45% yield) of the title compound.

LC-MS (Method 2): R_t=1.34 min; MS (ESIpos): m/z=531 [M+H]⁺.

Compound 34.02
(rac)-6-(6-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-[1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (430 mg, 810 μmol), Compound 34.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 530 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.97 min; MS (ESIpos): m/z=431 [M+H]⁺.

Compound 35.01
tert-butyl 4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (800 mg, 1.50 mmol) in dioxane (20 mL, 230 mmol) was added aqueous sodium carbonate solution (2.2 mL, 2.0 M, 4.5 mmol), 4-chloro-5-methoxypyrimidine (335 mg, 97% purity, 2.25 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(183 mg, 225 μmol). The mixture was heated to 120° C. in a sealed tube over night under argon atmosphere. Further 4-chloro-5-methoxypyrimidine (165 mg, 97% purity, 1.12 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(122 mg, 150 μmol) were added and the mixture was stirred at 120° C. Dichloromethane/methanol (100:1) was added and the mixture was extracted with half-saturated potassium carbonate solution. The solvent of the organic phase was removed in vacuum and silicagel chromatography gave 900 mg of the title compound as a crude product that was used for the next step without further purification.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=517 [M+H]⁺.

Compound 35.02
6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

embedded image

To a stirred solution of crude tert-butyl 4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (900 mg, approx. 1.05 mmol) in dichloromethane (10 mL) and methanol (1 mL) was added TFA (20 mL). The mixture was stirred at r.t. for 0.5 h. The solvent was removed in vacuum. A half-saturated solution of potassium carbonate was added and the mixture was extracted with a mixture of chloroform and methanol (5:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 180 mg of the title compound.

LC-MS (Method 2): R_t=0.89 min; MS (ESIpos): m/z=417 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.828 (0.67), 0.846 (0.50), 0.855 (0.59), 0.934 (0.96), 0.950 (1.04), 1.066 (11.80), 1.234 (0.54), 1.299 (8.49), 1.392 (4.25), 1.955 (1.55), 2.083 (0.70), 2.327 (1.20), 2.357 (4.27), 2.523 (1.17), 2.669 (0.42), 2.758 (4.61), 2.770 (6.71), 2.781 (5.30), 2.940 (1.91), 3.355 (1.29), 3.438 (2.63), 3.451 (7.61), 3.474 (1.16), 4.021 (16.00), 5.758 (11.44), 6.899 (0.57), 6.916 (1.96), 6.930 (1.89), 7.172 (2.98), 8.228 (0.79), 8.241 (0.83), 8.253 (3.16), 8.266 (3.03), 8.631 (6.84), 8.828 (6.58).

Compound 35.03
(rac)-tert-butyl 4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of (rac)-tert-butyl 4-[1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.60 g, 2.92 mmol) and 4-chloro-5-methoxypyrimidine (759 mg, 5.25 mmol) in dioxane (14 mL) and water (2.8 mL) was added sodium carbonate (1.24 g, 11.7 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(357 mg, 438 μmol). The mixture was heated to reflux for 24 h. Dichloromethane was added, the mixture was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 880 mg (57% yield) of the title compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=531 [M+H]⁺.

Compound 35.04
(rac)-6-(5-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-[(1R)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (880 mg, 1.66 mmol), Compound 35.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 900 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=431 [M+H]⁺.

Compound 36.01
4-(5-methoxypyrimidin-4-yl)-2-nitroaniline

embedded image

Starting with 4-chloro-5-methoxypyrimidine (1.10 g, 98% purity, 7.46 mmol) and (4-amino-3-nitrophenyl)boronic acid (2.44 g, 13.4 mmol), Compound 36.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.59 g (86% yield) of the title compound.

LC-MS (Method 2): R_t=0.85 min; MS (ESIpos): m/z=247 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 4.023 (16.00), 7.094 (2.83), 7.117 (2.85), 7.527 (0.70), 7.531 (0.82), 7.535 (0.62), 7.543 (0.71), 7.545 (0.96), 7.548 (0.93), 7.554 (0.78), 7.556 (0.72), 7.563 (1.11), 7.565 (0.83), 7.571 (0.89), 7.591 (0.72), 7.595 (1.34), 7.612 (1.18), 7.621 (1.23), 7.624 (1.71), 7.629 (0.83), 7.642 (0.84), 7.645 (0.62), 7.821 (2.69), 8.234 (1.52), 8.239 (1.49), 8.256 (1.34), 8.262 (1.44), 8.646 (5.99), 8.808 (6.57), 8.961 (2.72), 8.966 (2.76).

Compound 36.02
4-(4-amino-3-nitrophenyl)pyrimidin-5-ol

embedded image

To a stirred solution of 4-(5-methoxypyrimidin-4-yl)-2-nitroaniline (1.40 g, 5.69 mmol) in DMF (21 mL) was added sodium methanethiolate (1.99 g, 28.4 mmol) and the mixture was stirred at 60° C. for 3 h. A half-saturated sodium chloride solution was added and the mixture was extracted with chloroform/methanol (9:1). The aqueous phase was concentrated in vacuum to give 15.7 g of the title compound as a crude product that was used without purification.

LC-MS (Method 1): R_t=0.70 min; MS (ESIpos): m/z=233 [M+H]⁺.

Compound 36.03
2-nitro-4-[5-(propan-2-yloxy)pyrimidin-4-yl]aniline

embedded image

To a stirred solution of 4-(4-amino-3-nitrophenyl)pyrimidin-5-ol (15.7 g, approx. 5.69 mmol) in DMA (30 mL) was added potassium carbonate (2.36 g, 17.1 mmol) and 2-iodopropane (850 μl, 8.5 mmol) and the mixture was stirred at 70° C. for 1 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 822 mg of the title compound.

LC-MS (Method 1): R_t=1.00 min; MS (ESIpos): m/z=275 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.364 (14.90), 1.379 (16.00), 4.909 (0.81), 4.924 (1.10), 4.939 (0.81), 7.090 (2.41), 7.112 (2.38), 7.820 (2.06), 8.267 (1.30), 8.272 (1.33), 8.290 (1.19), 8.295 (1.25), 8.656 (4.48), 8.782 (6.98), 9.120 (2.42), 9.126 (2.45).

Compound 36.04
4-[5-(propan-2-yloxy)pyrimidin-4-yl]benzene-1,2-diamine

embedded image

To a stirred solution of 2-nitro-4-[5-(propan-2-yloxy)pyrimidin-4-yl]aniline (865 mg, 3.15 mmol) in ethanol (34 mL) and dichloromethane (34 mL) was added palladium on carbon (10% w/w palladium) (336 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 2 h. The mixture was filtered, and the solution was concentrated in vacuum to give 750 mg (88% yield) of the title compound as crude product, that was used for the next step without purification.

LC-MS (Method 1): R_t=0.63 min; MS (ESIpos): m/z=245 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.229 (1.13), 1.246 (1.11), 1.308 (16.00), 1.323 (15.97), 2.903 (0.65), 4.733 (0.90), 4.748 (1.21), 4.763 (0.92), 5.758 (1.01), 6.530 (2.76), 6.550 (2.66), 7.440 (1.46), 7.445 (1.65), 7.460 (1.23), 7.466 (1.45), 7.511 (3.05), 7.516 (2.62), 8.454 (4.48), 8.662 (7.08).

Compound 36.05
(+)-tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (Single Stereoisomer A)

embedded image

To a stirred solution of (2R,3R)-2,3-bis(benzoyloxy)butanedioic acid (5.85 g, 16.3 mmol) in 2-propanol (200 mL) was added (rac)-tert-butyl-4-[1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (10.0 g, 32.6 mmol), dissolved in warm 2-propanol (420 mL). A clear solution formed, and after 30 minutes a precipitate started to form. The mixture was stirred at r.t. for 16 h. The precipitate was collected by filtration and was dissolved in dichloromethane/methanol (100:1) and half-saturated potassium carbonate solution. The phases were separated, the organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum to give 3.42 g of enantiomerically enriched tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (Optical rotation: [α]_D=+17.5° from DMSO solution, c=4.4 mg/mL; enantiomeric purity: 92.5%)

The enantiomerically enriched tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (3.40 g, 11.1 mmol) was dissolved in warm 2-propanol (130 mL) and added to a stirred solution of (2R,3R)-2,3-bis(benzoyloxy)butanedioic acid (3.38 g, 9.43 mmol) in 2-propanol (50 mL). A clear solution formed, and after 30 minutes a precipitate started to form. The mixture was stirred at r.t. for 72 h. The precipitate was collected by filtration and was dissolved in dichloromethane/methanol (100:1) and half-saturated potassium carbonate solution. The phases were separated, the organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum to give 3.04 g of the title compound.

Optical rotation: [α]_D=+20.1° from DMSO solution, c=3.5 mg/mL;

Chiral HPLC (Instrument: Agilent HPLC 1260; Column: Chiralpak IA 3μ 100×4.6 mm; Eluent A: acetonitrile+0.1 Vol-% diethylamine (99%); isocratic: 100% A; Flow 1.0 mL/min; Temperature: 25° C.; DAD 280 nm): R_t=5.34 min (99.15%); (Minor Isomer: R_t=3.24 min (0.85%)).

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=307 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.027 (0.93), 1.042 (0.92), 1.053 (0.51), 1.200 (1.79), 1.216 (1.84), 1.370 (16.00), 3.332 (3.69), 5.757 (5.64), 5.808 (1.32), 6.355 (0.91), 6.409 (0.54), 6.413 (0.51), 6.422 (0.56), 6.426 (0.52), 7.803 (0.75), 7.804 (0.73), 7.816 (0.73).

Compound 36.06
N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (450 mg, 805 μmol),

Compound 36.06 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 645 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=459 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.357 (1.50), 1.372 (16.00), 1.386 (15.28), 1.710 (2.53), 1.727 (2.57), 3.466 (0.99), 3.483 (1.08), 3.495 (1.03), 4.924 (0.98), 4.939 (1.33), 4.954 (0.99), 5.758 (4.99), 7.605 (2.21), 7.766 (2.03), 7.787 (2.15), 8.151 (1.73), 8.154 (1.68), 8.172 (1.42), 8.176 (1.51), 8.496 (2.63), 8.500 (2.50), 8.593 (1.65), 8.607 (1.53), 8.764 (4.88), 8.887 (6.75).

Compound 37.01
4-(1-methyl-1H-pyrazol-4-yl)-2-nitroaniline

embedded image

Starting with (4-amino-3-nitrophenyl)boronic acid (2.00 g, 11.0 mmol) and 4-bromo-1-methyl-1H-pyrazole (1.1 mL, 11 mmol), Compound 37.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.78 g (74% yield) of the title compound.

LC-MS (Method 2): R_t=0.82 min; MS (ESIpos): m/z=219 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.171 (0.58), 1.986 (1.13), 3.325 (16.00), 7.027 (6.54), 7.048 (6.92), 7.093 (2.33), 7.115 (2.43), 7.415 (7.31), 7.522 (3.25), 7.528 (1.47), 7.543 (0.68), 7.546 (0.90), 7.549 (0.86), 7.554 (0.69), 7.564 (1.07), 7.566 (0.82), 7.571 (0.75), 7.573 (0.71), 7.596 (1.16), 7.613 (1.10), 7.622 (1.77), 7.625 (5.38), 7.631 (4.47), 7.643 (1.13), 7.647 (3.78), 7.652 (3.56), 7.742 (1.29), 7.748 (1.30), 7.764 (1.16), 7.770 (1.23), 7.797 (9.14), 7.799 (9.90), 8.071 (6.92), 8.077 (6.71), 8.091 (9.29), 8.144 (2.50), 8.150 (2.42).

Compound 37.02
4-(1-methyl-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(1-methyl-H-pyrazol-4-yl)-2-nitroaniline (3.28 g, 15.0 mmol) in ethanol (15 mL) and dichloromethane (35 mL) was added palladium on carbon (10% w/w palladium) (800 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 48 h. The mixture was filtered, and the solution was concentrated in vacuum. Aminophase silicagel chromatography gave 2.17 g (77% yield) of the title compound.

LC-MS (Method 2): R_t=0.56 min; MS (ESIpos): m/z=189 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.163 (0.68), 3.177 (0.71), 3.311 (16.00), 4.390 (5.12), 4.420 (5.20), 6.467 (4.63), 6.487 (6.97), 6.560 (3.87), 6.565 (4.03), 6.579 (2.52), 6.584 (2.80), 6.673 (6.39), 6.678 (5.99), 7.528 (8.51), 7.530 (8.53), 7.547 (0.68), 7.550 (0.67), 7.565 (0.81), 7.572 (0.61), 7.574 (0.57), 7.598 (0.96), 7.615 (0.81), 7.624 (0.98), 7.627 (1.29), 7.632 (0.66), 7.644 (0.69), 7.647 (0.52), 7.745 (7.87), 7.747 (7.47).

Compound 37.03
tert-butyl 4-[(2-{[6-(1-methyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (157 mg, 2.31 mmol) and di-1H-imidazol-1-ylmethanethione (2.16 g, 95% purity, 11.5 mmol) in dichloromethane (150 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (3.37 g, 11.5 mmol), dissolved in dichloromethane (50 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-(1-methyl-1H-pyrazol-4-yl)benzene-1,2-diamine (2.17 g, 11.5 mmol), suspended in dichloromethane (50 mL), was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (5.3 mL, 34 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 900 mg of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=489 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.989 (4.82), 1.005 (5.00), 1.072 (0.41), 1.088 (0.42), 1.385 (5.47), 1.390 (4.18), 1.394 (16.00), 1.988 (0.57), 2.341 (1.05), 2.354 (1.52), 2.366 (1.16), 2.523 (1.79), 2.539 (0.79), 3.308 (1.10), 3.489 (1.86), 3.860 (2.88), 5.760 (0.69), 6.895 (0.54), 6.898 (0.53), 6.908 (0.59), 6.911 (0.58), 7.176 (0.70), 8.234 (0.85), 8.248 (0.81).

Compound 37.04
6-(1-methyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(1-methyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (900 mg, 1.84 mmol), Compound 37.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 930 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=389 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.987 (14.24), 1.004 (14.09), 2.323 (0.52), 2.327 (0.73), 2.331 (0.52), 2.523 (2.28), 2.665 (0.56), 2.669 (0.78), 2.673 (0.55), 3.162 (0.63), 3.326 (1.27), 3.564 (4.94), 3.610 (0.88), 3.627 (1.12), 3.643 (0.83), 3.892 (16.00), 4.880 (0.70), 5.760 (1.11), 7.524 (2.18), 7.555 (1.90), 7.559 (2.01), 7.576 (2.81), 7.580 (2.89), 7.631 (3.04), 7.653 (1.71), 7.753 (2.90), 7.756 (2.90), 7.861 (5.11), 7.863 (5.41), 8.157 (4.62), 8.536 (1.47), 8.549 (1.42).

Compound 38.01
4-(1-ethyl-1H-pyrazol-4-yl)-2-nitroaniline

embedded image

Starting with 4-bromo-2-nitroaniline (2.00 g, 9.22 mmol) and (1-ethyl-1H-pyrazol-4-yl)boronic acid (2.17 g, 95% purity, 14.7 mmol), Compound 38.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.31 g (55%) of the title compound.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=233 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆) δ [ppm]: 1.369 (6.76), 1.388 (16.00), 1.406 (6.71), 4.093 (1.84), 4.111 (5.81), 4.130 (5.62), 4.147 (1.80), 7.024 (3.78), 7.046 (4.02), 7.424 (4.59), 7.640 (2.21), 7.645 (2.35), 7.661 (2.09), 7.667 (2.13), 7.808 (6.27), 7.810 (6.28), 8.086 (4.16), 8.091 (4.12), 8.159 (5.65), 8.161 (5.49).

Compound 38.02
4-(1-ethyl-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(1-ethyl-1H-pyrazol-4-yl)-2-nitroaniline (1.30 g, 5.60 mmol) in ethanol (60 mL) and dichloromethane (60 mL) was added palladium on carbon (10% w/w palladium) (596 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 2 h. The mixture was filtered and the solution was concentrated in vacuum. Aminophase-silicagel chromatography gave 1.00 g (79% yield) of the title compound.

LC-MS (Method 2): R_t=0.64 min; MS (ESIpos): m/z=203 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆) δ [ppm]: 1.347 (7.43), 1.366 (16.00), 1.369 (2.33), 1.383 (8.05), 1.404 (1.10), 2.522 (1.43), 4.062 (2.22), 4.081 (6.84), 4.099 (6.77), 4.117 (2.44), 4.406 (5.69), 4.433 (5.86), 5.759 (0.93), 6.464 (3.89), 6.484 (5.52), 6.570 (3.00), 6.575 (3.27), 6.589 (2.16), 6.594 (2.44), 6.681 (4.96), 6.686 (5.02), 7.542 (7.65), 7.803 (7.45).

Compound 38.03
6-(1-ethyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 597 μmol), Compound 38.03 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 125 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.91 min; MS (ESIpos): m/z=403 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.402 (6.92), 1.420 (16.00), 1.439 (6.91), 2.327 (0.52), 2.523 (2.74), 2.669 (0.52), 3.338 (1.36), 3.486 (0.74), 3.564 (2.89), 4.153 (1.66), 4.171 (5.01), 4.189 (5.08), 4.207 (1.73), 4.417 (1.08), 4.585 (0.85), 7.533 (2.86), 7.564 (2.37), 7.568 (2.59), 7.585 (3.60), 7.589 (3.77), 7.633 (4.03), 7.654 (2.17), 7.766 (3.34), 7.770 (3.75), 7.865 (6.59), 7.867 (6.85), 8.205 (5.94), 8.534 (2.00), 8.548 (1.93).

Compound 39.01
1-(cyclopropylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

To a stirred solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (8.00 g, 41.2 mmol) in DMF (130 mL) was added potassium carbonate (17.1 g, 124 mmol) and (bromomethyl)cyclopropane (6.0 mL, 62 mmol). The mixture was stirred at 60° C. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 4.95 g (48% yield) of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=249 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.314 (0.66), 0.318 (0.59), 0.325 (0.56), 0.330 (0.65), 0.471 (0.53), 0.476 (0.61), 0.492 (0.62), 0.496 (0.57), 1.045 (0.78), 1.219 (1.70), 1.224 (16.00), 3.295 (1.54), 3.927 (1.24), 3.946 (1.22), 7.542 (1.07), 7.544 (1.08), 7.932 (1.09).

Compound 39.02
4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-2-nitroaniline

embedded image

To a stirred solution of 4-bromo-2-nitroaniline (2.62 g, 12.1 mmol) in 1-propanol (110 mL) was added potassium carbonate solution (18 mL, 2.0 M, 36 mmol), 1-(cyclopropylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (4.10 g, 95% purity, 15.7 mmol), triphenylphosphine (158 mg, 604 μmol) and PdCl₂(PPh₃)₂(424 mg, 604 μmol). The mixture was heated to reflux for 2 h, the solvent was removed in vacuum. Aminophase silicagel chromatography gave a solid that was triturated with dichloromethane to give 2.61 g (84% yield) of the title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=259 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆) δ [ppm]: 0.359 (2.19), 0.370 (8.88), 0.374 (7.54), 0.382 (8.21), 0.386 (8.43), 0.396 (3.08), 0.510 (3.12), 0.520 (7.14), 0.525 (7.44), 0.530 (3.96), 0.536 (4.01), 0.541 (7.72), 0.545 (7.00), 0.556 (2.35), 0.864 (2.72), 1.066 (0.76), 1.210 (0.68), 1.216 (1.04), 1.228 (2.00), 1.235 (1.86), 1.240 (1.45), 1.247 (3.09), 1.256 (1.46), 1.259 (1.73), 1.267 (1.82), 1.279 (0.90), 1.285 (0.61), 3.166 (1.17), 3.336 (1.85), 3.941 (16.00), 3.959 (15.90), 5.758 (2.12), 7.032 (9.58), 7.054 (9.93), 7.431 (7.13), 7.650 (6.13), 7.655 (6.01), 7.672 (5.41), 7.677 (5.69), 7.811 (15.49), 7.813 (15.69), 8.093 (11.18), 8.098 (10.99), 8.177 (15.24).

Compound 39.03
4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

To a stirred solution of 4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-2-nitroaniline (2.60 g, 10.1 mmol) in ethanol (110 mL) and dichloromethane (110 mL) was added palladium on carbon (10% w/w palladium, 1.07 g) and the mixture was stirred at r.t. in a hydrogen atmosphere for 6 h. The mixture was filtered and the solution was concentrated in vacuum. Aminophase-silicagel chromatography gave 2.25 g (98% yield) of the title compound.

LC-MS (Method 1): R_t=0.61 min; MS (ESIpos): m/z=229 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆) δ [ppm]: 1.067 (16.00), 3.917 (1.17), 3.935 (1.27), 3.941 (0.96), 5.759 (1.12), 6.502 (0.71), 6.521 (1.00), 6.714 (0.90), 6.719 (0.83), 7.554 (1.25), 7.556 (1.23), 7.841 (1.11), 7.843 (1.10).

Compound 39.04
6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (355 mg, 672 μmol), Compound 39.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 320 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=429 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.400 (2.31), 0.403 (2.02), 0.412 (2.28), 0.415 (2.18), 0.540 (1.93), 0.544 (1.84), 0.550 (1.07), 0.560 (2.08), 0.565 (1.65), 1.282 (0.86), 3.160 (7.56), 3.443 (1.44), 3.454 (1.79), 3.467 (2.51), 3.477 (2.63), 3.483 (2.57), 3.561 (16.00), 4.001 (3.49), 4.019 (3.50), 4.503 (1.89), 7.554 (2.34), 7.574 (1.20), 7.578 (1.18), 7.595 (1.86), 7.599 (1.99), 7.641 (3.58), 7.662 (1.51), 7.784 (2.36), 7.788 (2.55), 7.871 (4.39), 7.873 (4.38), 8.228 (3.94), 8.230 (3.80), 8.546 (1.82), 8.558 (1.70).

Compound 39.05
6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (385 mg, 709 μmol), Compound 39.05 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 360 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=443 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.390 (1.60), 0.401 (6.25), 0.405 (5.43), 0.413 (5.95), 0.417 (6.00), 0.427 (2.20), 0.532 (2.25), 0.542 (5.29), 0.546 (5.04), 0.552 (2.83), 0.558 (2.91), 0.562 (5.67), 0.567 (4.38), 0.578 (1.63), 1.264 (1.48), 1.272 (1.41), 1.284 (2.41), 1.295 (1.27), 1.304 (1.41), 1.702 (3.96), 2.082 (1.05), 2.669 (0.84), 3.162 (8.65), 3.271 (1.50), 3.384 (1.08), 3.440 (2.01), 3.444 (2.16), 3.450 (2.28), 3.456 (2.74), 3.457 (2.52), 3.466 (2.73), 3.468 (2.79), 3.484 (2.52), 3.487 (2.40), 3.495 (1.99), 3.497 (2.14), 3.502 (1.68), 3.508 (1.38), 3.513 (1.29), 3.675 (0.87), 3.697 (0.90), 4.002 (9.79), 4.020 (9.75), 4.780 (1.89), 5.759 (16.00), 7.538 (5.02), 7.577 (3.15), 7.580 (3.01), 7.597 (5.22), 7.601 (5.52), 7.638 (8.05), 7.660 (4.93), 7.777 (6.13), 7.781 (6.70), 7.871 (11.32), 7.874 (11.83), 8.226 (10.39), 8.228 (10.77), 8.561 (3.52), 8.575 (3.30).

Compound 40.01
4-(1-methyl-1H-pyrazol-3-yl)-2-nitroaniline

embedded image

Starting with 3-bromo-1-methyl-1H-pyrazole (2.00 g, 12.4 mmol) and 2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (3.44 g, 13.0 mmol), Compound 40.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 2.18 g (80% yield) of the title compound.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=219 [M+H]⁺.

Compound 40.02
4-(1-methyl-1H-pyrazol-3-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(1-methyl-1H-pyrazol-3-yl)-2-nitroaniline (2.54 g, 11.6 mmol) in methanol (140 mL) and THF (70 mL) was added palladium on carbon (10% w/w palladium) (1.24 g, 1.16 mmol) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3.25 h. The mixture was filtered and the solution was concentrated in vacuum. Aminophase-silicagel chromatography gave 1.74 g (80% yield) of the title compound.

LC-MS (Method 2): R_t=0.61 min; MS (ESIpos): m/z=189 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (3.45), 3.797 (16.00), 3.948 (0.57), 4.465 (1.75), 4.500 (1.99), 6.337 (3.38), 6.343 (3.31), 6.471 (2.67), 6.490 (3.03), 6.780 (1.59), 6.785 (1.71), 6.800 (1.41), 6.804 (1.49), 6.988 (3.07), 6.993 (2.98), 7.574 (2.98), 7.580 (2.83).

Compound 40.03
tert-butyl 4-[(2-{[6-(1-methyl-1H-pyrazol-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (126 mg, 1.85 mmol) and di-1H-imidazol-1-ylmethanethione (1.65 g, 9.24 mmol) in dichloromethane (110 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (2.70 g, 9.24 mmol)=TH-004=ASCB369=, dissolved in dichloromethane (55 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-(1-methyl-1H-pyrazol-3-yl)benzene-1,2-diamine (1.74 g, 9.24 mmol), dissolved in dichloromethane (55 mL), was added and the mixture was stirred at r.t. for 3 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (2.0 mL, 13 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (2.0 mL, 13 mmol) was added and the mixture was stirred at r.t. for 4 h. Further N,N′-dipropan-2-ylcarbodiimide (4.0 mL, 26 mmol) was added and the mixture was stirred at r.t. for 56 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase silicagel chromatography gave 1.72 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=489 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.035 (0.59), 1.052 (1.11), 1.066 (0.47), 1.070 (0.65), 1.385 (11.31), 1.389 (7.08), 1.394 (16.00), 2.275 (0.62), 2.288 (0.89), 2.301 (0.65), 2.342 (1.10), 2.354 (1.36), 2.367 (0.97), 3.308 (2.05), 3.319 (0.93), 3.491 (1.89), 3.870 (4.92), 5.758 (0.42), 5.826 (0.77), 6.380 (0.60), 6.900 (0.51), 6.912 (0.50), 6.915 (0.52), 7.682 (0.80), 7.687 (0.79), 7.802 (0.49), 7.814 (0.46), 8.239 (0.77), 8.253 (0.73).

Compound 40.04
6-(1-methyl-1H-pyrazol-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(1-methyl-1H-pyrazol-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (1.70 g, 3.48 mmol), Compound 40.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 1.85 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.85 min; MS (ESIpos): m/z=389 [M+H]⁺.

Compound 41.01
6-(1-methyl-1H-1,2,4-triazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(1-methyl-1H-1,2,4-triazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (99.0 mg, 202 μmol), Compound 41.01 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 111 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.75 min; MS (ESIpos): m/z=391 [M+H]⁺.

Compound 42.01
ethyl 3-methylbutanimidate hydrochloride

embedded image

To 3-methylbutanenitrile (3.8 mL, 98% purity, 35 mmol) was added hydrochloric acid in dioxane (44 mL, c=4.0 M, 180 mmol) and ethanol (21 mL, 350 mmol). The mixture was stirred at room temperature overnight. The solvent was removed in vacuum, toluene was added, and the mixture was concentrated and dried under high vacuum to give 2.64 g of the title compound as a crude product that was used without purification.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.919 (14.99), 0.936 (16.00), 0.955 (0.83), 0.972 (0.67), 1.332 (3.80), 1.349 (8.21), 1.366 (4.01), 2.016 (0.71), 2.033 (0.90), 2.050 (0.73), 2.472 (4.76), 2.523 (0.81), 3.563 (0.79), 4.394 (1.14), 4.412 (3.80), 4.429 (3.85), 4.447 (1.18).

Compound 42.02
N′,3-dimethylbutanimidohydrazide hydrochloride

embedded image

To a stirred solution of crude ethyl 3-methylbutanimidate hydrochloride (2.60 g, approx. 15.7 mmol) in pyridine (25 mL, 310 mmol) was added methylhydrazine (840 μl, 98% purity, 16 mmol). The mixture was stirred at room temperature overnight. The solvent was removed in vacuum, the residue was triturated with dichloromethane/hexane to give 2.32 g of the title compound as a crude product that was used without purification.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.855 (0.55), 0.872 (0.59), 0.891 (13.71), 0.894 (3.91), 0.907 (16.00), 0.911 (4.29), 0.916 (1.17), 0.920 (1.35), 0.924 (2.25), 0.932 (1.74), 0.949 (1.59), 2.025 (0.60), 2.042 (0.76), 2.059 (0.64), 2.239 (3.53), 2.258 (2.92), 2.609 (1.04), 3.280 (0.45), 5.755 (5.30).

Compound 42.03
tert-butyl 4-({2-[(6-{[1-methyl-2-(3-methylbutanimidoyl)hydrazinyl]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

To a stirred solution of crude 2-[(4-{[4-(tert-butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (450 mg, approx. 428 μmol) in DMA (6 mL) was added DIPEA (1.5 mL, 8.6 mmol), crude N′,3-dimethylbutanimidohydrazide hydrochloride (259 mg, approx. 1.28 mmol) and PyBOP (668 mg, 1.28 mmol). The mixture was stirred at room temperature for 3 h. A sodium bicarbonate solution was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-Silicagel chromatography gave 125 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=564 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.750 (0.81), 0.765 (0.85), 1.064 (0.84), 1.081 (0.89), 1.395 (16.00), 1.828 (0.78), 2.343 (0.78), 2.356 (1.28), 2.367 (1.03), 2.518 (1.23), 2.523 (0.94), 2.996 (2.11), 3.145 (0.41), 3.320 (6.69), 3.492 (1.02), 3.497 (1.01), 3.932 (0.76), 5.755 (4.26).

Compound 42.04
6-[1-methyl-3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[1-methyl-3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (26.0 mg, 47.6 μmol), Compound 42.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 26.0 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.97 min; MS (ESIpos): m/z=446 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.957 (15.16), 0.974 (16.00), 1.986 (0.54), 2.062 (0.74), 2.080 (0.94), 2.096 (0.75), 2.327 (0.47), 2.518 (3.54), 2.523 (2.79), 2.541 (4.32), 2.559 (3.66), 2.669 (0.50), 3.300 (0.70), 3.564 (2.68), 3.968 (15.34), 5.756 (3.02), 7.553 (1.89), 7.755 (0.76), 7.759 (0.75), 7.776 (1.72), 7.781 (1.91), 7.800 (2.31), 7.821 (0.84), 8.070 (1.97), 8.539 (0.97), 8.553 (0.96).

Compound 44.01
4-bromo-1-(cyclopropylmethyl)pyridin-2(1H)-one

embedded image

To a stirred solution of 4-bromopyridin-2(1H)-one (3.00 g, 97% purity, 16.7 mmol) in DMA (50 mL) was added potassium carbonate (6.93 g, 50.2 mmol) and (bromomethyl)cyclopropane (2.5 mL, 96% purity, 25 mmol). The mixture was stirred at r.t. for 48 h. Water was added and the mixture was extracted with dichloromethane/methanol. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 3.10 g (81% yield) of the title compound.

LC-MS (Method 2): R_t=0.88 min; MS (ESIpos): m/z=228 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.336 (1.69), 0.348 (6.66), 0.352 (6.12), 0.361 (7.13), 0.364 (6.84), 0.374 (3.08), 0.398 (0.51), 0.404 (0.58), 0.411 (0.45), 0.423 (0.51), 0.440 (3.15), 0.449 (5.97), 0.454 (5.46), 0.460 (3.57), 0.465 (3.15), 0.470 (6.93), 0.475 (5.12), 0.485 (2.07), 1.139 (0.68), 1.145 (0.87), 1.158 (1.83), 1.165 (1.61), 1.170 (1.15), 1.177 (2.89), 1.184 (1.04), 1.186 (1.18), 1.190 (1.53), 1.196 (1.61), 1.198 (1.61), 1.208 (0.80), 1.210 (0.80), 1.216 (0.60), 2.523 (0.70), 3.695 (15.77), 3.714 (16.00), 6.450 (6.11), 6.456 (6.44), 6.468 (6.73), 6.474 (7.06), 6.704 (9.38), 6.710 (8.95), 7.716 (9.54), 7.733 (9.21).

Compound 44.02
1-(cyclopropylmethyl)-4-(3,4-diaminophenyl)pyridin-2(1H)-one

embedded image

To a stirred solution of 4-bromo-1-(cyclopropylmethyl)pyridin-2(1H)-one (1.70 g, 7.45 mmol) in 1-propanol (85 mL) was added potassium carbonate solution (11 mL, 2.0 M, 22 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (2.42 g, 90% purity, 9.32 mmol), triphenylphosphine (82.1 mg, 745 μmol) and PdCl₂(PPh₃)₂(523 mg, 745 μmol). The mixture was heated to reflux for 14 h, the solvent was removed in vacuum, water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 1.89 g (99% yield) of the title compound.

LC-MS (Method 2): R_t=0.73 min; MS (ESIpos): m/z=256 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.346 (1.48), 0.358 (5.63), 0.361 (5.39), 0.370 (6.52), 0.373 (5.91), 0.383 (2.77), 0.406 (0.89), 0.442 (2.50), 0.451 (5.08), 0.456 (4.60), 0.462 (3.27), 0.467 (2.72), 0.471 (5.88), 0.475 (4.43), 0.487 (1.83), 1.067 (3.34), 1.168 (0.74), 1.181 (1.42), 1.183 (1.26), 1.188 (1.36), 1.193 (1.00), 1.201 (2.40), 1.206 (0.95), 1.208 (1.06), 1.213 (1.34), 1.220 (1.41), 1.233 (0.71), 2.518 (1.35), 2.523 (1.00), 3.160 (0.45), 3.173 (0.56), 3.342 (16.00), 3.687 (11.37), 3.705 (11.31), 3.944 (0.61), 4.611 (7.29), 4.920 (9.49), 5.759 (3.84), 6.399 (2.52), 6.401 (4.91), 6.406 (15.98), 6.411 (2.36), 6.423 (6.02), 6.428 (4.08), 6.540 (8.92), 6.561 (10.16), 6.801 (4.61), 6.807 (5.16), 6.821 (3.86), 6.827 (4.56), 6.889 (8.61), 6.894 (7.93), 7.632 (5.72), 7.634 (5.60), 7.649 (5.19), 7.651 (5.79).

Compound 44.03
tert-butyl 4-{[2-({6-[1-(cyclopropylmethyl)-2-oxo-1,2-dihydropyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (84.0 mg, 1.23 mmol) and di-1H-imidazol-1-ylmethanethione (1.39 g, 95% purity, 7.40 mmol) in dichloromethane (60 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.80 g, 6.17 mmol), dissolved in dichloromethane (30 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 1-(cyclopropylmethyl)-4-(3,4-diaminophenyl)pyridin-2(1H)-one (1.89 g, 7.40 mmol), dissolved in dichloromethane (30 mL), was added and the mixture was stirred at r.t. for 2 h. Further 1-(cyclopropylmethyl)-4-(3,4-diaminophenyl)pyridin-2(1H)-one (88 mg) was added and the mixture was stirred at r.t. for 56 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (2.8 mL, 18 mmol) was added and the mixture was stirred at r.t. for 14 h. Sodium bicarbonate solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 2.36 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=556 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.397 (1.13), 0.409 (1.29), 0.483 (0.93), 0.498 (1.01), 1.384 (4.19), 1.394 (16.00), 2.358 (2.24), 3.308 (0.94), 3.500 (2.17), 3.745 (1.35), 3.763 (1.42), 6.928 (0.63), 6.941 (0.69), 7.183 (1.16), 7.761 (0.54), 7.776 (0.56), 8.263 (0.75), 8.275 (0.78), 12.225 (0.62).

Compound 44.04
1-(cyclopropylmethyl)-4-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyridin-2(1H)-one hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[1-(cyclopropylmethyl)-2-oxo-1,2-dihydropyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (2.36 g, 4.25 mmol), Compound 44.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 2.65 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.93 min; MS (ESIpos): m/z=456 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.391 (2.81), 0.403 (10.02), 0.407 (9.74), 0.415 (11.78), 0.419 (9.87), 0.428 (4.35), 0.438 (1.51), 0.451 (1.48), 0.457 (1.43), 0.465 (1.61), 0.473 (4.45), 0.481 (9.10), 0.486 (7.57), 0.492 (5.98), 0.502 (9.64), 0.505 (7.64), 0.518 (2.56), 1.058 (0.49), 1.210 (1.12), 1.216 (1.79), 1.228 (3.12), 1.236 (2.81), 1.242 (2.33), 1.248 (4.19), 1.255 (2.20), 1.260 (2.53), 1.267 (2.63), 1.279 (1.48), 1.286 (0.97), 1.423 (1.35), 1.442 (3.22), 1.461 (1.46), 2.323 (1.05), 2.327 (1.51), 2.331 (1.10), 2.523 (9.18), 2.665 (1.10), 2.669 (1.56), 2.674 (1.07), 2.722 (1.92), 2.884 (2.35), 3.149 (0.59), 3.168 (1.41), 3.187 (1.41), 3.207 (0.79), 3.422 (10.22), 3.451 (10.63), 3.464 (13.32), 3.480 (14.65), 3.482 (14.21), 3.559 (16.00), 3.569 (1.35), 3.645 (0.69), 3.653 (0.79), 3.656 (0.97), 3.661 (0.79), 3.668 (0.92), 3.671 (0.97), 3.697 (0.95), 3.699 (0.89), 3.707 (0.74), 3.712 (0.84), 3.773 (14.19), 3.791 (14.24), 4.328 (1.81), 4.519 (7.44), 4.757 (3.14), 6.587 (6.29), 6.593 (7.11), 6.606 (6.26), 6.611 (7.26), 6.655 (0.66), 6.661 (0.84), 6.675 (13.55), 6.680 (12.19), 6.763 (0.84), 6.768 (0.77), 7.166 (4.65), 7.207 (1.33), 7.580 (10.68), 7.649 (4.50), 7.663 (4.60), 7.696 (2.58), 7.699 (2.58), 7.709 (4.04), 7.713 (3.96), 7.730 (9.71), 7.735 (10.12), 7.750 (14.36), 7.771 (4.88), 7.857 (2.61), 7.860 (2.50), 7.870 (10.91), 7.887 (10.30), 7.953 (11.02), 7.957 (11.63), 8.028 (3.42), 8.044 (4.19), 8.142 (0.51), 8.394 (1.43), 8.406 (1.38), 8.567 (8.20), 8.580 (7.62), 9.135 (0.92), 9.941 (4.12).

Compound 45.01
tert-butyl 4-[(2-{[6-(pyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 561 μmol), 5-bromopyrimidine (116 mg, 730 μmol) and an aqueous sodium carbonate solution (700 μl, 2.0 M, 1.4 mmol) were stirred in DME (15 mL), sparged with argon for 2 min, Pd(dppf)Cl₂. CH₂Cl₂(45.8 mg, 56.1 μmol) was added and the mixture was stirred at 150° C. in a sealed tube for 2.5 h. The mixture was filtered through a silicone filter and concentrated under reduced pressure to give 597 mg of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=487 [M+H]⁺.

Compound 45.02
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-5-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(pyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (597 mg, 1.23 mmol), Compound 45.02 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 672 mg of the title compound as crude product were used for the next step without purification.

LC-MS (Method 2): R_t=0.80 min; MS (ESIpos): m/z=387 [M+H]⁺.

Compound 45.03
tert-butyl 4-[(2-{[6-(2-chloropyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 561 μmol), 5-bromo-2-chloropyrimidine (141 mg, 730 μmol) and an aqueous sodium carbonate solution (700 μl, 2.0 M, 1.4 mmol) were stirred in DME (15 mL), sparged with argon for 2 min, Pd(dppf)Cl₂. CH₂Cl₂(45.8 mg, 56.1 μmol) was added and the mixture was stirred at 150° C. in a sealed tube for 5 h. The mixture was filtered through a silicone filter and concentrated under reduced pressure to give 456 mg of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=521 [M+H]⁺.

Compound 45.04
6-(2-chloropyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride salt

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-chloropyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (456 mg, 876 μmol), Compound 45.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 611 mg of the title compound as crude product were used for the next step without purification.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=421 [M+H]⁺.

Compound 45.05
tert-butyl 4-[(2-{[6-(2-methylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 561 μmol), 5-bromo-2-methylpyrimidine (126 mg, 730 μmol) and an aqueous sodium carbonate solution (700 μl, 2.0 M, 1.4 mmol) were stirred in DME (15 mL), sparged with Ar for 2 min, Pd(dppf)Cl₂. CH₂Cl₂(45.8 mg, 56.1 μmol) was added and the mixture was stirred at 150° C. in a sealed tube for 5 h. The mixture was filtered through a silicone filter and concentrated under reduced pressure to give 366 mg of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=501 [M+H]⁺.

Compound 45.06
6-(2-methylpyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride salt

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-methylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (366 mg, 731 μmol), Compound 45.06 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 409 mg of the title compound as crude product were used for the next step without purification.

LC-MS (Method 2): R_t=0.82 min; MS (ESIpos): m/z=401 [M+H]⁺.

Compound 45.07
tert-butyl 4-[(2-{[6-(2-cyclopropylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 561 μmol), 5-bromo-2-cyclopropylpyrimidine (145 mg, 730 μmol) and an aqueous sodium carbonate solution (700 μl, 2.0 M, 1.4 mmol) were stirred in DME (15 mL), sparged with argon for 2 min, Pd(dppf)C₂. CH₂Cl₂(45.8 mg, 56.1 μmol) was added and the mixture was stirred at 150° C. in a sealed tube for 5 h. The mixture was filtered through a silicone filter and concentrated under reduced pressure to give 455 mg of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=527 [M+H]⁺.

Compound 45.08
6-(2-cyclopropylpyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(2-cyclopropylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (455 mg, 863 μmol), Compound 45.08 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 733 mg of the title compound as crude product that was were used for the next step without purification.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=428 [M+H]⁺.

Compound 45.09
tert-butyl 4-{[2-({6-[2-(methylsulfanyl)pyrimidin-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 561 μmol), 5-bromo-2-(methylsulfanyl)pyrimidine (150 mg, 730 μmol) and an aqueous sodium carbonate solution (700 μl, 2.0 M, 1.4 mmol) were stirred in DME (15 mL), sparged with argon for 2 min, Pd(dppf)Cl₂. CH₂Cl₂(45.8 mg, 56.1 μmol) was added and the mixture was stirred at 150° C. in a sealed tube for 2.5 h. The mixture was filtered through a silicone filter and concentrated under reduced pressure to give 564 mg of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=533 [M+H]⁺.

Compound 45.10
6-[2-(methylsulfanyl)pyrimidin-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[2-(methylsulfanyl)pyrimidin-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (564 mg, 1.06 mmol), Compound 45.10 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 590 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=433 [M+H]⁺.

Compound 46.01
6-chloro-4-iodo-3-methoxypyridazine

embedded image

To a stirred solution of 2,2,6,6-tetramethylpiperidine (6.9 mL, 41 mmol) in tetrahydrofuran (200 mL, 2.5 mol), was added n-butyllithium (16 mL, c=2.5 M in hexanes, 40 mmol) at −70° C. 3-chloro-6-methoxypyridazine (2.90 g, 20.1 mmol) dissolved in tetrahydrofuran (150 mL) was added dropwise and the reaction mixture was stirred at −78° C. for 30 minutes. Iodine (5.30 g, 20.9 mmol) dissolved in tetrahydrofuran (50 mL) was added and the mixture was stirred at −78° C. for 2 hours. An aqueous solution of disodium s ulfurothioate (c=1M; 150 mL) was added and the mixture was extracted with diethyl ether. The organic phase was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 925 mg of the title compound.

LC-MS (Method 5): R_t=2.94 min; MS (ESIpos): m/z=271 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.495 (0.64), 2.500 (0.88), 2.505 (0.64), 3.316 (11.53), 3.992 (0.76), 4.049 (16.00), 8.416 (5.48).

Compound 47.01
4-bromo-5-methoxypyridazin-3(2H)-one

embedded image

To a stirred suspension of 4,5-dibromopyridazin-3(2H)-one (4.00 g, 15.8 mmol) in methanol (40 mL, 990 mmol), was added potassium carbonate (4.00 g, 28.9 mmol) and the mixture was stirred at 80° C. for 67 hours. The solvent was removed in vacuum. Water was added to the residue and acetic acid was added until acidic pH was reached. A solid precipitated and was collected by filtration, washed with water, and dried to give 2.23 g (69% yield) of the title compound as a crude product.

LC-MS (Method 5): R_t=0.57 min; MS (ESIpos): m/z=205 [M+H]⁺.

Compound 47.02
5-methoxypyridazin-3(2H)-one

embedded image

To a stirred solution of 4-bromo-5-methoxypyridazin-3(2H)-one (900 mg, 4.39 mmol) in water (20 mL) was added sodium hydroxide (180 mg, 4.50 mmol) and palladium on carbon (10% w/w palladium) (300 mg) and the mixture was stirred at r.t. under a pressure of 2 bar of hydrogen for 2 h. The warm mixture was filtered through celite and the catalyst was washed with water. The filtrate was cooled to 0° C. and stir red at 0° C. for 2 hours. A solid precipitated and was collected by filtration to give 260 mg (47% yield) of the title compound.

LC-MS (Method 5): R_t=0.31 min; MS (ESIpos): m/z=127 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.500 (1.36), 3.328 (11.32), 3.779 (16.00), 6.167 (3.61), 6.173 (3.48), 7.657 (3.28), 7.663 (3.14), 12.613 (0.81).

Compound 47.03
3-chloro-5-methoxypyridazine

embedded image

A suspension of 5-methoxypyridazin-3(2H)-one (250 mg, 1.98 mmol) in phosphorus oxychloride (1.5 mL, 16 mmol) was stirred at 100° C. for 10 minutes. The reaction mixture was poured into ice water and sodium carbonate was added until a basic pH—was reached. The mixture was extracted with diethyl ether, the organic phase was dried (magnesium sulfate), filtered and the solvent was removed in vacuum. The residue was crystallized from 1,2-dichloroethane to give 130 mg (45% yield) of the title compound.

LC-MS (Method 5): R_t=0.85 min; MS (ESIpos): m/z=145 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.495 (0.78), 2.499 (1.07), 2.503 (0.84), 3.317 (11.94), 3.944 (16.00), 7.528 (2.28), 7.534 (2.29), 8.988 (2.34), 8.994 (2.34).

Compound 49.01
2-amino-6-bromo-3-nitrophenol

embedded image

To a stirred solution of 2-bromo-5-nitrophenol (10.0 g, 45.9 mmol) in DMSO (150 mL) was added 1,1,1-trimethylhydrazinium iodide (10.5 g, 97% purity, 50.5 mmol). The mixture was stirred for 90 min, then sodium 2-methylbutan-2-olate (26.6 g, 95% purity, 229 mmol) was added. The reaction mixture was stirred at r.t. over night. Aqueous hydrochloric acid (70 mL, 4.0 M, 280 mmol) and water were added at 0° C. and the mixture was stirred for 3 h. The reaction mixture was extracted with ethyl acetate/hexane (4:1). The organic phase was washed with saturated sodium chloride solution, filtered and the solvent was removed in vacuum, to give 10.6 g (99% yield) of the title compound as a crude product.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 3.760 (0.77), 6.617 (0.73), 6.640 (0.74), 6.752 (15.43), 6.776 (15.64), 7.175 (2.66), 7.484 (16.00), 7.507 (13.75), 7.542 (0.71), 7.565 (0.68), 9.998 (1.15).

Compound 49.04
3-bromo-2-(2-methylpropoxy)-6-nitroaniline

embedded image

To a stirred solution of 2-amino-6-bromo-3-nitrophenol (10.6 g, 45.6 mmol) in acetonitrile (150 mL) was added potassium carbonate (12.6 g, 91.1 mmol) and 1-bromo-2-methylpropane (20 mL, 99% purity, 180 mmol). The mixture was stirred at 70° C. for 14 h. Water was added and the mixture was extracted with ethyl acetate/hexane (3:1). The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 10.4 g (79% yield) of the title compound.

LC-MS (Method 2): R_t=1.45 min; MS (ESIpos): m/z=289 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.009 (1.50), 1.019 (16.00), 1.025 (2.30), 1.036 (15.86), 2.225 (0.92), 2.241 (1.11), 2.258 (0.88), 3.655 (5.08), 3.671 (5.15), 6.854 (4.03), 6.877 (4.24), 7.063 (1.60), 7.714 (3.64), 7.738 (3.66).

Compound 49.05
2-(2-methylpropoxy)-6-nitro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

embedded image

To a stirred solution of 3-bromo-2-(2-methylpropoxy)-6-nitroaniline (5.00 g, 17.3 mmol) in dioxane (500 mL, 5.8 mol) was added potassium acetate (5.09 g, 51.9 mmol), 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (706 mg, 865 μmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi-1,3,2-dioxaborolane (13.4 g, 98% purity, 51.9 mmol). The mixture was heated to 120° C. for 14 h. The reaction mixture was filtered through celite and the solvent was removed in vacuum. Aminophase silicagel chromatography gave 4.2 g (72% yield) of the title compound.

LC-MS (Method 1): R_t=1.56 min; MS (ESIpos): m/z=337 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.993 (4.30), 1.010 (4.68), 1.065 (0.99), 1.163 (1.66), 1.303 (16.00), 3.331 (2.01), 3.655 (1.27), 3.672 (1.22), 6.735 (1.00), 6.758 (0.99), 7.701 (0.92), 7.723 (0.88).

Compound 49.06
3-(2-methylpropoxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 2-(2-methylpropoxy)-6-nitro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (4.20 g, 11.2 mmol) in ethanol (380 mL, 6.6 mol) was added palladium on carbon (10% w/w palladium, 1.2 g) and the mixture was hydrogenated for 6 h. The mixture was filtered through celite and the solution was concentrated in vacuum. Aminophase silicagel chromatography gave 4.20 g of the title compound as crude product that was used without purification.

LC-MS (Method 1): R_t=1.23 min; MS (ESIpos): m/z=307 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.986 (2.30), 1.003 (2.48), 1.066 (16.00), 1.154 (0.41), 1.172 (0.83), 1.190 (0.41), 1.230 (7.53), 1.987 (1.36), 3.335 (1.46), 3.495 (0.62), 3.511 (0.61), 3.941 (2.75), 6.268 (0.46), 6.288 (0.48), 6.721 (0.52), 6.741 (0.45).

Compound 49.07
cyclopropyl{4-[(2-{[7-(2-methylpropoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 1H-imidazole (78.4 mg, 1.15 mmol) and di-1H-imidazol-1-ylmethanethione (1.30 g, 95% purity, 6.91 mmol) in dichloromethane (80 mL) was added {4-[(2-aminopyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone (1.50 g, 5.76 mmol), dissolved in dichloromethane (20 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 3-(2-methylpropoxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (3.02 g, approx. 6.91 mmol), dissolved in dichloromethane (30 mL) was added and the mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.8 mL, 12 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 1.90 g of the title compound as a crude product, that was used without further purification.

C-MS (Method 1): R_t=1.08 min; MS (ESIpos): m/z=575 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.678 (0.71), 0.697 (0.88), 0.709 (0.80), 0.716 (0.77), 0.721 (0.83), 1.021 (1.48), 1.037 (1.57), 1.153 (4.30), 1.171 (8.54), 1.189 (4.15), 1.275 (5.80), 1.289 (1.45), 1.986 (16.00), 3.334 (3.12), 3.999 (1.11), 4.016 (3.39), 4.034 (3.43), 4.052 (1.16).

Compound 50.01
3-(3-methoxypyridin-4-yl)-2-(2-methyl propoxy)-6-nitroaniline

embedded image

Starting with 3-bromo-2-(2-methylpropoxy)-6-nitroaniline (1.80 g, 6.23 mmol) and (3-methoxypyridin-4-yl)boronic acid (1.20 g, 95% purity, 7.47 mmol), Compound 50.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.30 g (66%) of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=318 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.577 (15.14), 0.594 (16.00), 1.171 (0.47), 1.751 (0.86), 1.768 (1.09), 1.785 (0.86), 1.986 (0.85), 2.522 (1.18), 3.213 (4.36), 3.229 (4.46), 3.331 (1.89), 3.333 (8.36), 3.818 (1.87), 5.755 (0.88), 5.758 (6.05), 6.505 (4.02), 6.527 (3.78), 7.028 (2.65), 7.254 (2.68), 7.266 (2.80), 7.810 (3.47), 7.832 (3.26), 8.279 (3.46), 8.287 (0.91), 8.290 (3.62), 8.495 (4.82).

Compound 50.02
4-(3-methoxypyridin-4-yl)-3-(2-methylpropoxy)benzene-1,2-diamine

embedded image

To a stirred solution of 3-(3-methoxypyridin-4-yl)-2-(2-methylpropoxy)-6-nitroaniline (1.30 g, 4.10 mmol) in ethanol (21 mL) and dichloromethane (41 mL) was added palladium on carbon (10% w/w palladium; 436 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3 h. The mixture was filtered, and the solution was concentrated in vacuum. Aminophase silicagel chromatography gave 1.00 g of the title compound as crude product that was used without further purification.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=288 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.628 (12.69), 0.644 (12.69), 1.663 (0.65), 1.681 (0.80), 1.697 (0.62), 3.102 (3.58), 3.117 (3.53), 3.332 (16.00), 4.179 (2.92), 4.738 (3.17), 5.760 (0.67), 6.288 (1.87), 6.308 (3.58), 6.348 (3.18), 6.368 (1.66), 7.138 (2.28), 7.150 (2.38), 8.145 (3.09), 8.156 (2.84), 8.332 (4.23).

Compound 50.03
tert-butyl 4-[(2-{[6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (35.5 mg, 522 μmol) and di-1H-imidazol-1-ylmethanethione (490 mg, 95% purity, 2.61 mmol) in dichloromethane (25 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (763 mg, 2.61 mmol), dissolved in dichloromethane (12 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 4-(3-methoxypyridin-4-yl)-3-(2-methylpropoxy)benzene-1,2-diamine (1.00 g, approx. 2.61 mmol), dissolved in dichloromethane (15 mL), was added and the mixture was stirred at r.t. for 56 h.

Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.2 mL, 7.7 mmol) was added and the mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (0.8 mL, 5.1 mmol) was added and the mixture was stirred at r.t. for 14 h.

Sodium bicarbonate solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave 407 mg of the title compound.

LC-MS (Method 2): R_t=1.39 min; MS (ESIpos): m/z=588 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) [ppm]: 0.736 (4.14), 0.752 (4.31), 1.393 (16.00), 2.338 (0.95), 2.350 (1.37), 2.363 (0.98), 3.344 (1.19), 3.486 (1.50), 3.802 (4.10), 4.233 (1.29), 4.249 (1.28), 5.760 (2.85), 6.784 (0.77), 6.804 (0.81), 7.184 (0.78), 7.196 (0.93), 7.203 (1.54), 7.223 (0.77), 8.199 (0.87), 8.211 (0.84), 8.248 (0.66), 8.262 (0.61), 8.373 (1.38), 10.682 (0.69).

Compound 50.04
6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (407 mg, 692 μmol), Compound 50.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 474 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=488 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.759 (15.96), 0.776 (16.00), 1.798 (0.51), 1.815 (0.99), 1.832 (1.21), 1.848 (0.94), 2.523 (1.01), 3.334 (0.82), 3.383 (0.72), 3.387 (0.68), 3.394 (0.74), 3.440 (2.22), 3.455 (1.76), 3.971 (15.15), 4.032 (1.31), 4.046 (1.27), 5.760 (3.82), 7.156 (1.26), 7.176 (1.38), 7.440 (2.45), 7.448 (1.55), 7.460 (2.02), 7.496 (0.65), 7.896 (2.14), 7.910 (2.13), 8.474 (1.14), 8.486 (1.09), 8.601 (2.44), 8.615 (2.26), 8.743 (4.26).

Compound 51.01
3-bromo-2-ethoxy-6-nitroaniline

embedded image

To a stirred solution of 2-amino-6-bromo-3-nitrophenol (4.41 g, 18.9 mmol) in acetonitrile (130 mL) was added potassium carbonate (5.23 g, 37.8 mmol) and iodoethane (2.8 mL, 98% purity, 34 mmol). The mixture was stirred at r.t. for 14 h. Further iodoethane (0.78 mL) was added and the mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 3.6 g (73% yield) of the title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=261 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.392 (7.25), 1.409 (16.00), 1.427 (7.76), 3.957 (2.27), 3.975 (7.73), 3.992 (7.46), 4.010 (2.18), 6.841 (7.10), 6.864 (7.17), 7.235 (2.90), 7.707 (6.46), 7.731 (6.55).

Compound 51.02
2-ethoxy-3-(3-methoxypyridin-4-yl)-6-nitroaniline

embedded image

Starting with 3-bromo-2-ethoxy-6-nitroaniline (3.60 g, 13.5 mmol) and (3-methoxypyridin-4-yl)boronic acid (2.50 g, 15.5 mmol), Compound 51.02 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 2.80 g (72%) of the title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=290 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.953 (6.47), 0.971 (15.43), 0.988 (7.08), 1.174 (0.68), 1.987 (1.27), 3.309 (16.00), 3.507 (2.00), 3.524 (6.69), 3.542 (6.75), 3.559 (1.97), 6.512 (6.59), 6.535 (6.84), 7.135 (3.81), 7.277 (4.27), 7.289 (4.36), 7.543 (0.79), 7.546 (1.16), 7.548 (1.19), 7.554 (0.98), 7.557 (0.86), 7.563 (1.41), 7.565 (1.13), 7.571 (1.09), 7.573 (1.05), 7.593 (0.85), 7.597 (1.77), 7.604 (0.84), 7.610 (0.96), 7.613 (1.28), 7.618 (0.80), 7.623 (1.84), 7.625 (2.32), 7.630 (1.22), 7.644 (1.24), 7.647 (0.95), 7.796 (5.71), 7.819 (5.43), 8.292 (5.51), 8.303 (5.63), 8.519 (7.71).

Compound 51.03
3-ethoxy-4-(3-methoxypyridin-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 2-ethoxy-3-(3-methoxypyridin-4-yl)-6-nitroaniline (2.80 g, 90% purity, 8.71 mmol) in ethanol (100 mL) and dichloromethane (100 mL) was added palladium on carbon (10% w/w palladium; 463 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 14 h. The mixture was filtered through celite and the solution was concentrated in vacuum. Aminophase-silicagel chromatography gave 2.80 g of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=0.72 min; MS (ESIpos): m/z=260 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.937 (7.19), 0.954 (16.00), 0.972 (7.51), 3.312 (8.30), 3.393 (2.23), 3.410 (7.10), 3.427 (7.19), 3.445 (2.18), 4.232 (1.51), 4.723 (1.54), 5.751 (14.21), 6.315 (2.74), 6.335 (9.88), 6.349 (9.58), 6.369 (2.55), 7.172 (5.25), 7.184 (5.30), 7.527 (0.48), 7.543 (0.82), 7.545 (1.14), 7.548 (1.24), 7.554 (1.05), 7.556 (0.84), 7.563 (1.27), 7.565 (1.22), 7.570 (1.03), 7.572 (1.02), 7.594 (0.86), 7.598 (1.75), 7.604 (0.96), 7.613 (1.02), 7.615 (1.10), 7.618 (0.91), 7.625 (2.20), 7.630 (1.19), 7.644 (1.14), 8.156 (6.47), 8.168 (6.39), 8.356 (9.47).

Compound 51.04
tert-butyl 4-[(2-{[7-ethoxy-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (81.5 mg, 1.20 mmol) and di-1H-imidazol-1-ylmethanethione (1.12 g, 95% purity, 5.99 mmol) in dichloromethane (40 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.75 g, 5.99 mmol), dissolved in dichloromethane (30 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 3-ethoxy-4-(3-methoxypyridin-4-yl)benzene-1,2-diamine (2.22 g, 70% purity, 5.99 mmol), dissolved in dichloromethane (40 mL), was added and the mixture was stirred at r.t. for 56 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (3.7 mL, 24 mmol) was added. The mixture was stirred at r.t. for 1 h. Further N,N′-dipropan-2-ylcarbodiimide (3.7 mL, 24 mmol) was added and the mixture was stirred at r.t. for 2 h. Further N,N′-dipropan-2-ylcarbodiimide (1.8 mL, 12 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase-silicagel chromatography gave 2.00 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=560 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.130 (1.45), 1.147 (3.18), 1.155 (3.54), 1.165 (1.67), 1.173 (7.15), 1.191 (3.59), 1.394 (16.00), 1.987 (12.79), 2.343 (0.91), 2.356 (1.41), 2.367 (1.08), 3.346 (1.25), 3.488 (1.47), 3.796 (0.72), 3.820 (4.07), 4.001 (1.03), 4.018 (3.05), 4.036 (3.02), 4.054 (0.98), 4.549 (0.87), 4.567 (0.87), 5.755 (3.87), 6.791 (0.64), 6.811 (0.69), 7.179 (0.75), 7.191 (1.38), 7.211 (0.75), 7.231 (0.63), 8.206 (0.75), 8.218 (0.71), 8.248 (0.77), 8.262 (0.72), 8.384 (1.23), 10.678 (0.80), 12.123 (0.70).

Compound 51.05
7-ethoxy-6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[7-ethoxy-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (2.00 g, 3.22 mmol), Compound 51.05 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 2.30 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=460 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.078 (0.64), 1.176 (4.37), 1.193 (9.60), 1.211 (4.80), 2.522 (1.26), 3.049 (0.42), 3.197 (2.80), 3.223 (2.67), 3.370 (2.69), 3.384 (3.12), 3.396 (2.16), 3.692 (0.50), 3.958 (0.90), 3.967 (1.12), 3.975 (1.54), 3.980 (16.00), 4.178 (2.58), 4.275 (1.10), 4.292 (3.20), 4.310 (3.20), 4.327 (1.06), 7.171 (2.29), 7.192 (2.61), 7.417 (1.25), 7.434 (3.46), 7.454 (2.40), 7.546 (2.42), 7.786 (2.21), 7.800 (2.22), 8.442 (2.08), 8.456 (1.98), 8.509 (2.61), 8.523 (2.38), 8.667 (4.21).

Compound 52.01
3-(1-ethyl-1H-pyrazol-4-yl)-2-(2-methylpropoxy)-6-nitroaniline

embedded image

Starting with 3-bromo-2-(2-methylpropoxy)-6-nitroaniline (1.80 g, 6.23 mmol) and (1-ethyl-1H-pyrazol-4-yl)boronic acid (1.05 g, 95% purity, 7.16 mmol), Compound 52.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 1.21 g (64%) of the title compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=305 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.980 (15.04), 0.990 (1.38), 0.996 (16.00), 1.390 (4.64), 1.408 (11.63), 1.427 (5.07), 2.175 (0.78), 2.192 (1.01), 2.209 (0.79), 2.522 (1.49), 3.391 (4.03), 3.407 (4.01), 4.168 (1.24), 4.185 (3.93), 4.204 (4.04), 4.222 (1.30), 6.858 (1.31), 6.891 (4.38), 6.913 (4.15), 7.784 (3.92), 7.807 (3.39), 7.967 (4.54), 7.969 (4.52), 8.277 (4.11), 8.279 (4.14).

Compound 52.02
4-(1-ethyl-1H-pyrazol-4-yl)-3-(2-methylpropoxy)benzene-1,2-diamine

embedded image

To a stirred solution of 3-(1-ethyl-1H-pyrazol-4-yl)-2-(2-methylpropoxy)-6-nitroaniline (1.21 g, 3.98 mmol) in ethanol (20 mL) and dichloromethane (40 mL) was added palladium on carbon (10% w/w palladium; 423 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3 h. The mixture was filtered, and the solution was concentrated in vacuum. Aminophase silicagel chromatography gave 1.00 g (92% yield) of the title compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=275 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.954 (14.62), 0.971 (16.00), 1.351 (4.90), 1.369 (12.10), 1.388 (4.87), 2.021 (0.78), 2.037 (0.95), 2.054 (0.74), 2.518 (2.78), 2.523 (1.83), 3.292 (3.77), 3.309 (3.89), 4.085 (1.42), 4.102 (7.13), 4.121 (4.47), 4.139 (1.38), 4.564 (3.70), 5.760 (7.51), 6.326 (2.95), 6.346 (3.44), 6.558 (3.73), 6.578 (3.17), 7.630 (4.62), 7.632 (4.66), 7.849 (4.24), 7.851 (4.01).

Compound 52.03
tert-butyl 4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (49.6 mg, 729 μmol) and di-1H-imidazol-1-ylmethanethione (684 mg, 95% purity, 3.64 mmol) in dichloromethane (40 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.07 g, 3.64 mmol), dissolved in dichloromethane (20 mL), at 0° C. The mixture was stirred at r.t. for 16 h. 4-(1-ethyl-1H-pyrazol-4-yl)-3-(2-methylpropoxy)benzene-1,2-diamine (1.00 g, 3.64 mmol), dissolved in dichloromethane (20 mL), was added and the mixture was stirred at r.t. for 3 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.7 mL, 11 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (1.7 mL, 11 mmol) was added and the mixture was stirred at r.t. for 5 h. Further N,N′-dipropan-2-ylcarbodiimide (1.1 mL, 7.3 mmol) was added and the mixture was stirred at r.t. for 56 h. Sodium bicarbonate solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase-silicagel chromatography gave 500 mg of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.46 min; MS (ESIpos): m/z=575 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.925 (2.06), 0.942 (2.14), 0.980 (4.06), 0.997 (4.21), 1.134 (0.74), 1.137 (0.73), 1.154 (0.65), 1.374 (1.14), 1.382 (2.45), 1.386 (4.43), 1.390 (7.33), 1.394 (16.00), 1.400 (4.28), 1.411 (1.46), 1.418 (1.33), 2.323 (0.59), 2.327 (0.77), 2.332 (0.99), 2.337 (1.20), 2.349 (1.43), 2.361 (1.03), 2.523 (1.99), 2.669 (0.42), 3.308 (0.76), 3.483 (1.33), 3.496 (0.57), 4.144 (1.02), 4.149 (0.84), 4.162 (1.08), 4.167 (0.87), 4.342 (1.26), 4.359 (1.26), 7.158 (1.13), 7.167 (1.20), 7.239 (0.74), 7.772 (0.77), 7.799 (1.23), 8.016 (1.13), 8.037 (0.50), 8.228 (0.61), 8.241 (0.56), 10.584 (0.64).

Compound 52.04
6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 870 μmol), Compound 52.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 497 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=475 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.926 (6.49), 0.942 (6.56), 0.986 (0.94), 1.003 (1.47), 1.016 (15.77), 1.033 (16.00), 1.152 (2.83), 1.168 (2.89), 1.270 (3.81), 1.284 (5.50), 1.299 (3.69), 1.318 (3.06), 1.335 (3.06), 1.379 (2.98), 1.394 (5.87), 1.397 (6.71), 1.411 (10.37), 1.416 (3.81), 1.430 (4.73), 2.122 (0.55), 2.139 (1.06), 2.155 (1.33), 2.172 (1.15), 2.176 (0.87), 2.188 (0.67), 2.193 (0.62), 2.322 (0.60), 2.326 (0.77), 2.332 (0.58), 2.522 (4.95), 2.565 (2.99), 2.664 (0.55), 2.668 (0.71), 2.673 (0.51), 3.455 (3.51), 3.563 (9.69), 3.620 (0.70), 3.637 (0.90), 3.641 (1.07), 3.659 (0.98), 3.691 (0.96), 3.708 (1.13), 3.712 (0.87), 3.729 (0.60), 3.857 (2.91), 3.874 (2.85), 4.144 (0.98), 4.162 (3.23), 4.181 (5.12), 4.200 (4.10), 4.218 (1.35), 4.342 (0.68), 4.362 (0.75), 4.454 (1.03), 4.842 (0.91), 7.124 (1.57), 7.145 (1.47), 7.404 (1.80), 7.416 (2.26), 7.426 (2.34), 7.437 (1.84), 7.513 (2.04), 7.524 (2.83), 7.546 (1.85), 7.587 (0.85), 7.827 (2.76), 7.829 (2.38), 7.876 (4.70), 7.878 (4.52), 8.105 (2.57), 8.140 (4.45), 8.517 (1.25), 8.530 (1.20), 9.810 (0.76), 10.430 (0.71), 10.450 (0.71), 10.494 (0.63), 10.515 (0.64), 13.729 (1.38).

Compound 53.01
2-ethoxy-3-(1-ethyl-1H-pyrazol-4-yl)-6-nitroaniline

embedded image

Starting with 3-bromo-2-ethoxy-6-nitroaniline (950 mg, 3.64 mmol) and (1-ethyl-1H-pyrazol-4-yl)boronic acid (616 mg, 95% purity, 4.18 mmol), Compound 53.01 was prepared analogously to the procedure for the preparation of Compound 02.01.

Yield: 650 g (65% yield) of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=277 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.364 (5.55), 1.382 (12.43), 1.393 (7.41), 1.400 (5.47), 1.411 (16.00), 1.429 (6.72), 3.692 (1.41), 3.709 (4.85), 3.727 (4.82), 3.745 (1.37), 4.181 (1.86), 4.200 (5.87), 4.218 (5.73), 4.236 (1.73), 6.895 (5.71), 6.919 (5.64), 7.140 (2.81), 7.767 (5.29), 7.791 (4.74), 8.006 (6.65), 8.008 (6.76), 8.325 (6.24).

Compound 53.02
3-ethoxy-4-(1-ethyl-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 2-ethoxy-3-(1-ethyl-1H-pyrazol-4-yl)-6-nitroaniline (650 mg, 2.35 mmol) in ethanol (100 mL) and dichloromethane (100 mL) was added palladium on carbon (10% w/w palladium; 125 mg) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3 h. The mixture was filtered, and the solution was concentrated in vacuum. Aminophase silicagel chromatography gave 0.45 g (78% yield) of the title compound.

LC-MS (Method 2): R_t=0.76 min; MS (ESIpos): m/z=247 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.155 (4.15), 1.172 (8.74), 1.190 (4.39), 1.275 (4.19), 1.292 (9.82), 1.310 (4.50), 1.357 (5.58), 1.375 (12.34), 1.393 (5.82), 1.987 (16.00), 3.337 (5.56), 3.586 (1.22), 3.604 (4.13), 3.621 (4.04), 3.638 (1.18), 4.000 (1.24), 4.018 (3.74), 4.035 (3.65), 4.053 (1.16), 4.096 (1.64), 4.114 (5.11), 4.133 (4.96), 4.150 (1.60), 4.207 (4.13), 4.544 (4.34), 5.758 (2.91), 6.318 (3.38), 6.338 (4.01), 6.570 (4.27), 6.591 (3.65), 7.670 (5.55), 7.671 (5.77), 7.885 (5.69).

Compound 53.03
tert-butyl 4-[(2-{[7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (24.7 mg, 363 μmol) and di-1H-imidazol-1-ylmethanethione (340 mg, 95% purity, 1.81 mmol) in dichloromethane (20 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (530 mg, 1.81 mmol), dissolved in dichloromethane (10 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 3-Ethoxy-4-(1-ethyl-1H-pyrazol-4-yl)benzene-1,2-diamine (446 mg, 1.81 mmol), dissolved in dichloromethane (10 mL), was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane/methanol (20:1).

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (700 μl, 4.5 mmol) was added and the mixture was stirred at r.t. for 14 h. Sodium bicarbonate solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. The residue was triturated with ethanol, filtered and the solid was discarded. The solution was concentrated in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 0.41 g of the title compound as a crude product, that was used without further purification.

LC-MS (Method 2): R_t=1.32 min; MS (ESIpos): m/z=547 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.364 (0.70), 1.386 (16.00), 1.390 (3.24), 1.395 (5.04), 1.408 (1.13), 1.427 (0.49), 2.277 (0.89), 2.290 (1.29), 2.302 (0.98), 3.309 (2.93), 3.322 (5.25), 5.756 (0.73), 5.815 (1.12), 6.382 (0.88), 6.406 (0.54), 6.419 (0.56), 7.802 (0.71), 7.804 (0.66), 7.815 (0.68), 7.816 (0.69).

Compound 53.04
7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (400 mg, 659 μmol), Compound 53.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 0.41 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.97 min; MS (ESIpos): m/z=447 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.376 (6.03), 1.394 (13.61), 1.399 (7.64), 1.411 (7.18), 1.418 (16.00), 1.436 (6.58), 1.591 (0.50), 2.327 (1.51), 2.523 (6.71), 2.665 (1.18), 2.669 (1.51), 3.057 (1.68), 3.162 (5.88), 3.354 (8.97), 3.457 (4.19), 3.563 (3.29), 4.072 (1.41), 4.089 (4.07), 4.107 (4.12), 4.124 (1.86), 4.175 (2.96), 4.193 (6.53), 4.211 (6.33), 4.229 (2.56), 4.440 (1.18), 5.138 (0.78), 5.758 (3.01), 7.133 (9.07), 7.418 (2.21), 7.440 (2.84), 7.539 (2.61), 7.553 (4.30), 7.575 (3.67), 7.920 (7.08), 7.922 (6.63), 7.999 (5.53), 8.015 (5.30), 8.191 (6.41), 8.317 (1.86), 8.522 (1.56), 9.703 (1.51).

Compound 54.01
3-methyl-4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine

embedded image

Methyl 3,4-diamino-2-methylbenzoate (PCT Int. Appl., 2009055077) (1.00 g, 5.55 mmol) N-hydroxyethanimidamide (974 mg, 95% purity, 12.5 mmol) and caesium carbonate (1.81 g, 5.55 mmol) were solubilized in dioxane (10 mL), and the reaction was stirred for 16 hours at 110° C. N-Hydroxyethanimidamide (974 mg, 95% purity, 12.5 mmol) and caesium carbonate (1.81 g, 5.55 mmol) were added again and the reaction was stirred for 24 h additional hours. The mixture was diluted with water and extracted with ethyl acetate. The organic phase was dried (silicone filter) and concentrated under reduced pressure. The residue was stirred with water at 60° C. The suspension was filtered and the solid was dried under reduced pressure to give 740 mg of the title compound (62% yield).

LC-MS (Method 2): R_t=0.74 min; MS (ESIpos): m/z=205 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.340 (16.00), 2.405 (13.00), 4.517 (2.90), 5.375 (3.38), 6.513 (2.08), 6.534 (2.19), 7.136 (2.51), 7.157 (2.33).

Compound 54.02
tert-butyl 4-[(2-{[7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of di-1H-imidazol-1-ylmethanethione (314 mg, 1.76 mmol) and imidazole (20.0 mg, 294 μmol) in dichloromethane (10 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (429 mg, 1.47 mmol), dissolved in dichloromethane (10 mL), at 0° C. The mixture was stirred at r.t. for 14 h. 3-methyl-4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine (300 mg, 1.47 mmol) was added and the mixture was stirred at r.t. for 4 h. Water was added and the mixture was extracted with dichloromethane.

The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (5.0 mL, 32 mmol) was added and the mixture was stirred at r.t. for 14 h. Sodium bicarbonate solution was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane. The organic phase was dried and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 480 mg of the title compound

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=505 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.392 (4.86), 1.396 (16.00), 2.348 (0.93), 2.360 (1.42), 2.373 (1.08), 2.417 (6.35), 2.835 (4.62), 3.351 (1.21), 3.505 (1.44), 5.758 (4.48).

Compound 54.03
7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride salt

embedded image

Starting with tert-butyl 4-[(2-{[7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (480 mg, 951 μmol), Compound 54.03 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 470 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=405 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.860 (16.00), 3.162 (9.15), 3.292 (1.38), 3.455 (1.63), 3.466 (1.46), 3.485 (1.25), 3.497 (1.06), 3.563 (3.11), 3.661 (0.97), 3.664 (0.82), 3.673 (1.04), 3.697 (1.09), 3.707 (0.87), 3.711 (0.99), 4.354 (0.95), 7.567 (1.46), 7.638 (1.43), 7.660 (1.53), 7.949 (3.09), 7.970 (2.66), 8.485 (1.07).

Compound 55.01
1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (757 mg, 3.90 mmol) and 2,2-difluorocyclopropylmethyl bromide (CAS #77613-65-1), Compound 55.01 was prepared analogously to the procedure for the preparation of Compound 39.01. The mixture was stirred at 80° C. over night.

Yield: 1.02 g (85%) of the title compound as crude product with 92% purity that was used for the next step without purification.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=285 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.22-1.32 (m, 12H), 1.42-1.57 (m, 1H), 1.60-1.72 (m, 1H), 2.15-2.30 (m, 1H), 4.13-4.35 (m, 2H), 7.61 (s, 1H), 7.98 (s, 1H).

Compound 55.02
4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline

embedded image

Starting with 1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.02 g, 3.59 mmol) compound 55.01, Compound 55.02 was prepared analogously to the procedure for the preparation of Compound 39.02.

Yield: 577 mg (49%) of the title compound with 90% purity.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=295 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.45-1.58 (m, 1H), 1.61-1.76 (m, 1H), 2.17-2.31 (m, 1H), 4.13-4.34 (m, 2H), 7.05 (d, 1H), 7.44 (s, 2H), 7.66 (dd, 1H), 7.88 (d, 1H), 8.10 (d, 1H), 8.19 (s, 1H),

Compound 55.02.01
4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline

embedded image

The racemic mixture of 4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline compound 55.02 was separated by chiral HPLC.

Yield: 317 mg of the title compound with 97% purity.

Chiral HPLC (Method 6): R_t=4.75 min; >99.9% ee

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.45-1.58 (m, 1H), 1.61-1.76 (m, 1H), 2.17-2.31 (m, 1H), 4.13-4.34 (m, 2H), 7.05 (d, 1H), 7.44 (s, 2H), 7.66 (dd, 1H), 7.88 (d, 1H), 8.10 (d, 1H), 8.19 (s, 1H).

Compound 55.02.02
4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline

embedded image

The racemic mixture of 4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline compound 55.02 was separated by chiral HPLC.

Yield: 250 mg of the title compound with 96% purity.

Chiral HPLC (Method 6): R_t=5.34 min; 96.2% ee

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.45-1.58 (m, 1H), 1.61-1.76 (m, 1H), 2.17-2.31 (m, 1H), 4.13-4.34 (m, 2H), 7.05 (d, 1H), 7.44 (s, 2H), 7.66 (dd, 1H), 7.88 (d, 1H), 8.10 (d, 1H), 8.19 (s, 1H).

Compound 55.03
4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline (570 mg, 1.94 mmol) Compound 55.02, Compound 55.03 was prepared analogously to the procedure for the preparation of Compound 39.03.

Yield: 365 mg (64%) of the title compound with 90% purity.

LC-MS (Method 2): R_t=0.78 min; MS (ESIpos): m/z=265 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.43-1.55 (m, 1H), 1.59-1.75 (m, 1H), 2.15-2.31 (m, 1H), 4.13-4.27 (m, 2H), 4.44 (br d, 4H), 6.48 (d, 1H), 6.59 (dd, 1H), 6.69 (d, 1H), 7.60 (d, 1H), 7.83 (s, 1H).

Compound 55.03.01
4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline (315 mg; see Compound 55.02.01), Compound 55.03.01 was prepared analogously to the procedure for the preparation of Compound 39.03.

Yield: 163 mg of the title compound with 80% purity.

LC-MS (Method 2): R_t=0.80 min; MS (ESIpos): m/z=265 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.43-1.55 (m, 1H), 1.59-1.75 (m, 1H), 2.15-2.31 (m, 1H), 4.13-4.27 (m, 2H), 4.44 (br d, 4H), 6.48 (d, 1H), 6.59 (dd, 1H), 6.69 (d, 1H), 7.60 (d, 1H), 7.83 (s, 1H).

Compound 55.03.02
4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline (245 mg; see Compound 55.02.02), Compound 55.03.02 was prepared analogously to the procedure for the preparation of Compound 39.03.

Yield: 143 mg of the title compound with 76% purity.

LC-MS (Method 2): R_t=0.80 min; MS (ESIpos): m/z=265 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.43-1.55 (m, 1H), 1.59-1.75 (m, 1H), 2.15-2.31 (m, 1H), 4.13-4.27 (m, 2H), 4.44 (br d, 4H), 6.48 (d, 1H), 6.59 (dd, 1H), 6.69 (d, 1H), 7.60 (d, 1H), 7.83 (s, 1H).

Compound 55.04
6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride salt

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (360 mg, 622 μmol; Example 55.01), Compound 55.04 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 427 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=479 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]:]=1.55 (ddt, 1H), 1.64-1.81 (m, 4H), 2.21-2.37 (m, 1H), 2.50-2.53 (m, 4H), 3.28 (br s, 2H), 3.39-3.53 (m, 3H), 4.23-4.36 (m, 2H), 7.55 (s, 1H), 7.56-7.61 (m, 1H), 7.66 (d, 2H), 7.79 (d, 1H), 7.93 (d, 1H), 8.23 (s, 1H), 8.57 (d, 1H), 9.80 (br s, 2H), 13.37 (br s, 2H). −2 HCl not detectable.

Compound 55.04.01
6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (70.0 mg, see Example 55.01.01), Compound 55.04.01 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 96 mg of the 78% pure title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=479 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.49-1.60 (m, 1H), 1.63-1.79 (m, 4H), 2.21-2.32 (m, 1H), 3.19-3.54 (m, 8H), 4.20-4.35 (m, 3H), 7.54 (s, 1H), 7.56-7.69 (m, 3H), 7.75-7.81 (m, 1H), 7.88-7.94 (m, 1H), 8.21-8.26 (m, 1H), 8.57 (d, 1H), 9.72 (br s, 2H), 12.83-13.53 (m, 3H).—2 HCl detectable.

Compound 55.04.02
6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (80.0 mg, see Example 55.01.02), Compound 55.04.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 79 mg of the 80% pure title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=479 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.49-1.60 (m, 1H), 1.63-1.79 (m, 4H), 2.21-2.32 (m, 1H), 3.16 (s, 1H), 3.17-3.55 (m, 1H), 3.19-3.34 (m, 2H), 3.34-3.54 (m, 4H), 4.20-4.35 (m, 3H), 7.54 (s, 1H), 7.56-7.69 (m, 3H), 7.75-7.81 (m, 1H), 7.88-7.94 (m, 1H), 8.21-8.26 (m, 1H), 8.57 (d, 1H), 9.72 (br s, 2H), 12.83-13.53 (m, 3H). −2 HCl detectable.

Compound 56.01
1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with (1R,2S)-1-(bromomethyl)-2-methylcyclopropane (2.00 g, 13.4 mmol), Compound 56.01 was prepared analogously to the procedure for the preparation of Compound 39.01. The mixture was stirred at 80° C. over night.

Yield: 890 mg (25%) of the title compound as crude product with 53% purity that was used for the next step without purification.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=263.1 [M+H]⁺.

Compound 56.02
4-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline

embedded image

Starting with 1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (890 mg, 3.39 mmol, compound 56.01), Compound 56.02 was prepared analogously to the procedure for the preparation of Compound 39.02.

Yield: 300 mg (30%) of the title compound with 92% purity.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=273 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.06-0.32 (m, 1H), 0.44-0.57 (m, 1H), 0.68-0.86 (m, 1H), 0.91-0.98 (m, 1H), 0.98-1.14 (m, 3H), 3.84-4.14 (m, 2H), 7.01-7.09 (m, 1H), 7.42 (s, 2H), 7.62-7.70 (m, 1H), 7.78-7.86 (m, 1H), 8.07-8.12 (m, 1H), 8.13-8.20 (m, 1H).

Compound 56.03
4-(1-{([(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 4-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-2-nitroaniline (300 mg, 1.10 mmol, Compound 56.02), Compound 56.03 was prepared analogously to the procedure for the preparation of Compound 39.03.

Yield: 356 mg (97%) of the title compound with 73% purity.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=243 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.01-0.32 (m, 1H), 0.46-0.55 (m, 1H), 0.70-0.83 (m, 1H), 0.89-0.96 (m, 1H), 1.00 (d, 3H), 3.80-4.16 (m, 2H), 4.77 (br s, 4H), 6.48-6.54 (m, 1H), 6.59-6.66 (m, 1H), 6.68-6.75 (m, 1H), 7.52-7.58 (m, 1H), 7.77-7.86 (m, 1H)

Compound 56.04
6-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride salt

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (235 mg, 422 μmol) Example 56.01, Compound 56.04 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 314 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]:]=0.132 (0.62), 0.145 (0.64), 0.288 (0.89), 0.300 (1.70), 0.312 (1.35), 0.320 (1.77), 0.332 (1.03), 0.539 (0.92), 0.550 (1.81), 0.561 (1.79), 0.571 (2.02), 0.582 (1.01), 0.734 (0.62), 0.745 (0.62), 0.755 (0.41), 0.807 (0.48), 0.821 (0.83), 0.832 (1.12), 0.845 (1.49), 0.849 (1.12), 0.863 (1.63), 0.881 (0.76), 0.967 (0.50), 0.979 (0.99), 0.986 (1.08), 0.991 (1.05), 0.996 (1.54), 1.013 (14.85), 1.028 (13.41), 1.044 (0.87), 1.130 (4.40), 1.146 (3.55), 1.231 (0.41), 1.277 (0.48), 1.281 (0.44), 1.295 (0.57), 1.696 (4.47), 1.712 (4.45), 2.327 (1.12), 2.331 (0.78), 2.518 (4.74), 2.523 (3.28), 2.669 (1.12), 2.674 (0.78), 2.727 (0.99), 2.887 (1.24), 3.162 (16.00), 3.202 (0.46), 3.219 (0.53), 3.288 (1.60), 3.360 (0.64), 3.371 (1.08), 3.382 (0.83), 3.387 (0.76), 3.393 (0.94), 3.456 (2.13), 3.466 (2.29), 3.468 (2.36), 3.485 (2.27), 3.487 (2.20), 3.497 (1.97), 3.595 (0.60), 3.602 (0.53), 3.613 (0.48), 3.661 (0.53), 3.665 (0.46), 3.673 (0.55), 3.675 (0.57), 3.697 (0.57), 3.699 (0.55), 3.711 (0.48), 3.728 (0.46), 3.948 (1.17), 3.967 (1.12), 3.983 (2.41), 4.001 (2.64), 4.022 (2.45), 4.040 (2.18), 4.058 (1.05), 4.075 (1.05), 4.118 (0.44), 4.134 (1.17), 4.154 (1.15), 4.163 (1.01), 4.181 (0.85), 4.702 (0.55), 5.300 (1.38), 7.544 (5.09), 7.577 (2.15), 7.581 (2.20), 7.587 (1.19), 7.598 (3.46), 7.602 (3.92), 7.608 (1.40), 7.640 (6.58), 7.661 (4.26), 7.771 (1.01), 7.779 (4.52), 7.783 (4.74), 7.870 (8.37), 7.871 (8.60), 7.881 (2.36), 7.883 (2.41), 8.194 (6.90), 8.206 (1.05), 8.217 (1.99), 8.566 (3.74), 8.579 (3.44), 9.794 (1.15), 13.357 (0.57).

Compound 57.01
2-nitro-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)aniline

embedded image

Starting with 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazole (CAS #894807-98-8; 3.51 g, 91% purity, 9.85 mmol), Compound 57.01 was prepared analogously to the procedure for the preparation of Compound 39.02.

Yield: 2.1 g (59%) of the title compound with 93% purity.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=335 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.07-−0.02 (m, 9H), 0.79-0.88 (m, 2H), 3.50-3.60 (m, 2H), 5.39 (s, 2H), 7.05 (d, 1H), 7.41-7.52 (m, 2H), 7.69 (dd, 1H), 7.90-7.99 (m, 1H), 8.13 (d, 1H), 8.29-8.36 (m, 1H)

Compound 57.02
4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 2-nitro-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)aniline (2.10 g, 6.28 mmol) Compound 56.01, Compound 56.02 was prepared analogously to the procedure for the preparation of Compound 39.03.

Yield: 1.5 g (63%) of the title compound with 80% purity.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=305 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.09-0.00 (m, 9H), 0.76-0.89 (m, 2H), 3.47-3.59 (m, 2H), 4.45 (br d, 4H), 5.32-5.40 (m, 2H), 6.49 (d, 1H), 6.62 (dd, 1H), 6.71 (d, 1H), 7.66 (s, 1H), 7.94 (d, 1H).—contains tBuOH.

Compound 57.03
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

1H-imidazole (67.1 mg, 985 μmol) and di-1H-imidazol-1-ylmethanethione (922 mg, 5.17 mmol) were dissolved in 15 mL dichloromethane. tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (1.51 g, 4.93 mmol) dissolved in 15 mL dichloromethane was added. This mixture was stirred at rt for over night. 4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine (1.50 g, 4.93 mmol) compound 57.02 dissolved in 15 mL dichloromethane was added and it was stirred at rt for three hours. The reaction mixture was diluted with dichloromethane and water. The aqueous layer was extracted with dichloromethane twice. The organic layer was concentrated under reduced pressure and the residue was purified by flash chromatography to give 2.2 g of the intermediate thiourea in 76% purity. The intermediate tert-butyl 4-{(1R or 1S)-1-[2-({[2-amino-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)phenyl]carbamothioyl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (2.19 g, 76% purity, 2.55 mmol) was solved in 33 mL dichloromethane and N,N′-dipropan-2-ylcarbodiimide (1.2 ml, 7.6 mmol) was added. This mixture was stirred 72 h at rt. The reaction mixture was absorbed with isolute and purified by flash chromatography.

Yield: 1.39 g of the title compound with 85% purity.

LC-MS (Method 2): R_t=1.51 min; MS (ESIpos): m/z=619 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: −0.020 (1.87), −0.017 (1.41), −0.014 (2.68), −0.008 (16.00), 0.000 (0.76), 0.863 (0.62), 0.883 (0.77), 0.904 (0.55), 1.166 (0.45), 1.301 (1.14), 1.318 (1.01), 1.404 (9.35), 1.409 (2.55), 2.111 (0.96), 3.348 (0.84), 3.361 (6.54), 3.586 (0.52), 3.606 (0.64), 3.626 (0.44), 5.442 (0.86), 7.189 (0.47), 8.270 (0.61), 8.283 (0.57).

Compound 58.01
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazole

embedded image

To a stirred solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (2.00 g, 10.3 mmol) in DMF (20 ml) was added potassium carbonate (4.27 g, 30.9 mmol) and 2,2,2-trifluoroethyl trifluoromethanesulfonate (2.2 ml, 15 mmol). The mixture was stirred at 80° C. for 14 h. Further 2,2,2-trifluoroethyl trifluoromethanesulfonate (420 μl, 2.9 mmol) was added and the mixture was stirred at 80° C. for 1 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 1.76 g (62% yield) of the title compound.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (1.33), 1.256 (16.00), 5.144 (0.85), 5.167 (0.81), 7.701 (1.31), 8.055 (1.26).

Compound 58.02
2-nitro-4-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]aniline

embedded image

To a stirred solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazole (1.76 g, 6.06 mmol) in 1-propanol (42 ml) was added potassium carbonate solution (7.0 ml, 2.0 M, 14 mmol), 4-bromo-2-nitroaniline (1.01 g, 4.66 mmol), triphenylphosphine (61.1 mg, 233 μmol) and PdCl₂(PPh₃)₂(164 mg, 233 μmol). The mixture was heated to reflux for 2 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 941 mg of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=287 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (0.59), 1.172 (0.65), 1.987 (1.19), 2.518 (2.95), 2.523 (2.06), 5.090 (3.14), 5.113 (9.09), 5.136 (8.48), 5.159 (2.55), 7.045 (9.54), 7.067 (9.88), 7.471 (12.23), 7.671 (5.50), 7.676 (5.37), 7.693 (4.69), 7.698 (5.06), 8.004 (15.43), 8.006 (16.00), 8.132 (10.24), 8.137 (10.07), 8.253 (13.82).

Compound 58.03
4-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

To a stirred solution of 2-nitro-4-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]aniline (921 mg, 3.22 mmol) in ethanol (34 ml) and dichloromethane (34 ml) was added palladium on carbon (10% w/w palladium; 342 mg, 322 μmol) and the mixture was stirred at r.t. in a hydrogen atmosphere for 2.5 h. The mixture was filtered and the solution was concentrated in vacuum to give 746 mg of the title compound as a crude product that was used without purification.

LC-MS (Method 2): R_t=0.76 min; MS (ESIpos): m/z=257 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.053 (0.76), 1.067 (0.70), 2.518 (2.53), 2.523 (1.87), 4.831 (2.46), 5.059 (3.14), 5.082 (8.79), 5.105 (8.37), 5.128 (2.66), 5.759 (1.38), 6.524 (8.66), 6.544 (12.21), 6.633 (6.20), 6.637 (6.58), 6.652 (4.35), 6.657 (4.87), 6.733 (11.20), 6.739 (9.83), 7.733 (15.43), 7.735 (16.00), 7.913 (12.86).

Compound 58.04
tert-butyl 4-{[2-({6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (38.7 mg, 568 μmol) and di-1H-imidazol-1-ylmethanethione (590 mg, 90% purity, 2.98 mmol) in dichloromethane (5 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (830 mg, 2.84 mmol), dissolved in dichloromethane (10 mL) at r.t. The mixture was stirred at r.t. for 14 h. 4-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (750 mg, 97% purity, 2.84 mmol), dissolved in dichloromethane (20 mL) was added and the mixture was stirred at r.t. for 14 h.

Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 1.90 g of a solid that was dissolved in dichloromethane (30 ml). N,N′-dipropan-2-ylcarbodiimide (1.2 ml, 7.9 mmol) was added and the mixture was stirred for 62 h.

Silicagel chromatography of the crude reaction mixture gave a solid that was triturated with ethanol to give 750 mg of the title compound as a crude product that was used for the next step without further purification.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.990 (2.46), 1.006 (2.45), 1.053 (0.76), 1.386 (0.89), 1.395 (16.00), 2.342 (0.88), 2.355 (1.30), 2.368 (0.92), 3.348 (1.06), 3.492 (1.67), 5.759 (0.57), 6.902 (0.50), 6.919 (0.53), 7.174 (0.68), 8.240 (0.83), 8.254 (0.81).

Compound 58.05
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (750 mg, 1.35 mmol), Compound 58.04 was prepared analogously to the procedure for the preparation of Compound 01.05.

Yield: 850 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.97 min; MS (ESIneg): m/z=457 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.985 (8.02), 1.001 (7.86), 2.518 (2.43), 2.523 (1.62), 3.160 (11.58), 3.388 (3.21), 3.404 (3.67), 3.420 (3.32), 3.455 (7.44), 3.457 (7.53), 3.465 (8.15), 3.467 (8.13), 3.483 (4.83), 3.493 (2.55), 3.495 (2.47), 3.507 (1.23), 3.609 (0.65), 3.620 (0.45), 3.625 (0.79), 3.637 (0.69), 3.642 (0.65), 3.647 (0.45), 3.654 (0.62), 3.658 (0.84), 3.662 (0.60), 3.671 (0.78), 3.673 (0.80), 3.695 (0.78), 3.697 (0.73), 3.706 (0.54), 3.709 (0.67), 4.473 (2.82), 5.171 (2.41), 5.194 (6.56), 5.217 (6.15), 5.240 (1.99), 7.555 (7.28), 7.599 (4.56), 7.603 (4.58), 7.619 (8.58), 7.624 (8.94), 7.666 (9.41), 7.687 (4.95), 7.815 (8.47), 7.818 (8.43), 8.046 (16.00), 8.317 (13.60), 8.543 (5.45), 8.556 (5.09), 9.940 (1.87), 13.332 (0.50).

Compound 59.01
1-(cyclobutylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

To a stirred solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (2.00 g, 10.3 mmol) in N,N-dimethylacetamide (16 ml, 170 mmol) in a microwave tube was added potassium carbonate (2.85 g, 20.6 mmol) and (bromomethyl)cyclobutane (2.30 g, 15.5 mmol). The mixture was stirred at 80° C. for 14 h. Further potassium carbonate (2.85 g, 20.6 mmol) and (bromomethyl)cyclobutane (2.30 g, 15.5 mmol) was added and the mixture was stirred at 80° C. for 24 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave 1.90 g (70% yield) of the title compound.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (1.56), 1.172 (0.85), 1.240 (16.00), 1.987 (1.36), 3.329 (2.68), 4.111 (1.24), 4.129 (1.23), 7.550 (1.22), 7.552 (1.23), 7.894 (1.22).

Compound 59.02
4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-2-nitroaniline

embedded image

To a stirred solution of 4-bromo-2-nitroaniline (1.60 g, 7.37 mmol) in 1-propanol (110 ml) was added potassium carbonate solution (11 ml, 2.0 M, 22 mmol), 1-(cyclobutylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.93 g, 7.37 mmol), triphenylphosphine (96.7 mg, 369 μmol) and PdCl₂(PPh₃)₂(259 mg, 369 μmol). The mixture was heated to reflux for 2 h, the solvent was removed in vacuum. Aminophase silicagel chromatography gave a solid that was triturated with hexane to give 1.80 g of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=272 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.743 (2.69), 1.749 (1.25), 1.762 (3.18), 1.764 (3.88), 1.771 (2.45), 1.774 (2.14), 1.779 (1.98), 1.783 (3.82), 1.788 (4.34), 1.793 (2.87), 1.798 (5.14), 1.805 (4.50), 1.810 (2.38), 1.814 (4.74), 1.820 (3.60), 1.823 (3.09), 1.830 (2.65), 1.833 (2.41), 1.842 (3.74), 1.845 (3.17), 1.859 (1.52), 1.863 (1.96), 1.866 (2.11), 1.881 (0.88), 1.942 (1.10), 1.946 (1.91), 1.949 (1.77), 1.957 (2.50), 1.963 (3.02), 1.968 (3.14), 1.969 (3.52), 1.977 (3.22), 1.982 (4.71), 1.991 (3.97), 1.995 (2.69), 1.998 (2.69), 2.006 (1.54), 2.010 (1.51), 2.518 (2.40), 2.523 (1.62), 2.717 (0.95), 2.735 (2.26), 2.755 (3.13), 2.773 (2.56), 2.792 (1.03), 4.096 (16.00), 4.115 (15.56), 5.758 (1.29), 7.022 (10.13), 7.044 (10.59), 7.422 (12.78), 7.636 (6.10), 7.642 (5.93), 7.659 (5.31), 7.664 (5.49), 7.800 (15.99), 7.803 (16.00), 8.081 (10.75), 8.087 (10.86), 8.123 (15.12), 8.125 (15.10).

Compound 59.03
4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

To a stirred solution of 4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-2-nitroaniline (1.80 g, 6.61 mmol) in ethanol (200 ml) was added palladium on carbon (10% w/w palladium; 70.3 mg, 66.1 μmol) and the mixture was stirred at r.t. in a hydrogen atmosphere for 3 h. Further palladium on carbon (10% w/w palladium; 70.3 mg, 66.1 μmol) was added and the mixture was stirred at r.t. in a hydrogen atmosphere for 2 h. The mixture was filtered and the solution was concentrated in vacuum to give 1.55 g of the title compound as a crude product that was used without purification.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=243 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.037 (5.04), 1.055 (9.28), 1.069 (0.66), 1.072 (4.91), 1.715 (0.66), 1.727 (0.91), 1.733 (2.80), 1.739 (1.41), 1.745 (1.28), 1.750 (2.92), 1.752 (3.33), 1.755 (3.91), 1.761 (2.66), 1.765 (2.17), 1.770 (2.02), 1.775 (3.96), 1.779 (3.84), 1.782 (2.71), 1.791 (4.41), 1.797 (3.61), 1.802 (2.26), 1.807 (4.24), 1.814 (3.46), 1.816 (3.33), 1.823 (2.65), 1.834 (3.08), 1.836 (3.82), 1.839 (3.27), 1.841 (1.97), 1.853 (1.62), 1.857 (2.13), 1.859 (2.16), 1.875 (0.93), 1.880 (0.74), 1.931 (1.30), 1.934 (1.75), 1.937 (1.72), 1.945 (2.50), 1.951 (3.10), 1.956 (3.23), 1.957 (3.44), 1.965 (3.16), 1.969 (4.60), 1.980 (4.03), 1.983 (2.65), 1.987 (2.84), 1.998 (1.66), 2.004 (0.69), 2.518 (1.15), 2.522 (0.80), 2.694 (0.94), 2.713 (2.26), 2.732 (3.15), 2.750 (2.52), 2.769 (1.04), 3.162 (2.88), 3.174 (3.00), 3.339 (4.45), 3.407 (0.42), 3.420 (0.49), 3.425 (1.22), 3.437 (1.29), 3.442 (1.26), 3.455 (1.26), 4.066 (15.07), 4.085 (15.28), 4.101 (0.80), 4.114 (0.75), 4.348 (0.77), 4.361 (1.41), 4.374 (0.81), 4.457 (8.55), 6.467 (9.65), 6.487 (13.17), 6.568 (7.34), 6.573 (7.71), 6.587 (4.82), 6.592 (5.51), 6.679 (12.27), 6.684 (10.88), 7.535 (15.84), 7.537 (16.00), 7.762 (14.09), 7.764 (13.78).

Compound 59.04
6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (600 mg, 1.08 mmol, Example 59.01.01) in dichloromethane (10 mL) and methanol (1.0 mL) was added HCl in dioxane (5.4 ml, 4.0 M, 22 mmol). The mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 1.0 g of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.987 (16.00), 1.004 (15.59), 1.713 (1.73), 1.730 (1.85), 1.772 (0.41), 1.793 (0.63), 1.812 (0.96), 1.823 (1.03), 1.828 (1.00), 1.833 (1.13), 1.840 (0.68), 1.850 (0.45), 1.859 (0.55), 1.980 (0.50), 1.988 (0.68), 1.997 (0.62), 2.009 (0.63), 2.523 (0.59), 2.784 (0.42), 3.159 (10.62), 3.330 (0.62), 3.443 (0.40), 3.454 (0.58), 3.466 (0.67), 3.483 (0.71), 3.495 (0.68), 3.499 (0.60), 3.506 (0.57), 3.519 (0.51), 3.532 (0.53), 3.596 (0.62), 3.613 (1.17), 3.629 (1.49), 3.645 (1.13), 3.661 (0.54), 4.157 (1.76), 4.175 (1.72), 5.758 (5.01), 7.558 (1.39), 7.566 (0.77), 7.583 (0.96), 7.587 (1.03), 7.636 (1.48), 7.657 (0.84), 7.702 (0.66), 7.712 (0.60), 7.770 (1.43), 7.772 (1.43), 7.861 (2.31), 8.177 (2.11), 8.568 (1.05), 8.581 (0.96), 9.937 (0.48).

Compound 59.05
tert-butyl 4-{[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (23.3 mg, 342 μmol) and di-1H-imidazol-1-ylmethanethione (356 mg, 90% purity, 1.80 mmol) in dichloromethane (5 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 1.71 mmol), dissolved in dichloromethane (10 mL) at r.t. The mixture was stirred at r.t. for 14 h. 4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (427 mg, 1.71 mmol), dissolved in dichloromethane (10 mL) was added and the mixture was stirred at r.t. for 62 h. Silicagel chromatography of the crude reaction mixture gave 1.10 g of a solid that was dissolved in dichloromethane (20 ml). N,N′-dipropan-2-ylcarbodiimide (800 μl, 5.1 mmol) was added and the mixture was stirred for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (300 μl) was added and the mixture was stirred for 24 h. Silicagel chromatography of the crude reaction mixture followed by aminophase-silicagel chromatography gave 380 mg of the title compound as a crude product that was used for the next step without further purification.

LC-MS (Method 2): R_t=1.37 min; MS (ESIpos): m/z=543 [M+H]⁺.

Compound 59.06
6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amineydrochloride

embedded image

To a stirred solution of tert-butyl 4-{[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (380 mg, 700 μmol) in dichloromethane (10 mL) and methanol (1.0 mL) was added HCl in dioxane (3.5 ml, 4.0 M, 14 mmol). The mixture was stirred at room temperature for 16 h. Further HCl in dioxane (3.5 ml, 4.0 M, 14 mmol) was added and the mixture was stirred at room temperature for 24 h. The solvent was removed in vacuum to give 500 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=443 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.148 (2.30), 1.166 (5.00), 1.184 (3.02), 1.222 (1.14), 1.771 (2.88), 1.792 (4.75), 1.810 (7.18), 1.822 (7.70), 1.826 (7.55), 1.831 (8.29), 1.857 (4.09), 1.873 (1.86), 1.880 (2.43), 1.904 (1.78), 1.921 (0.40), 1.964 (2.65), 1.982 (12.44), 1.996 (4.93), 2.007 (4.61), 2.327 (0.87), 2.669 (0.86), 2.726 (0.45), 2.745 (1.26), 2.763 (2.47), 2.782 (3.04), 2.800 (2.42), 2.819 (1.04), 3.159 (13.82), 3.466 (14.04), 3.482 (15.56), 3.559 (1.44), 3.646 (0.60), 3.657 (1.27), 3.662 (1.01), 3.671 (1.43), 3.696 (1.34), 3.704 (0.91), 3.709 (1.14), 3.719 (0.45), 3.993 (0.74), 4.011 (2.06), 4.028 (2.03), 4.046 (0.67), 4.113 (1.31), 4.131 (1.53), 4.155 (11.97), 4.173 (11.69), 4.521 (7.06), 4.626 (1.31), 6.282 (0.47), 7.016 (0.52), 7.070 (0.81), 7.090 (0.54), 7.120 (0.81), 7.558 (13.27), 7.580 (6.49), 7.583 (6.79), 7.636 (12.33), 7.656 (8.40), 7.697 (1.51), 7.773 (10.16), 7.858 (16.00), 7.885 (1.09), 8.004 (1.29), 8.141 (1.73), 8.175 (14.34), 8.545 (6.79), 8.557 (6.31), 9.040 (1.26), 9.055 (1.17), 10.014 (3.54), 13.324 (0.70).

Compound 60.01
tert-butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred suspension of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (7.50 g, 14.0 mmol, Compound 01.04) in 1-propanol (100 ml) was added 4,6-dichloro-5-methoxypyrimidine (7.69 g, 98% purity, 42.1 mmol), triphenylphosphine (368 mg, 1.40 mmol), PdCl₂(PPh₃)₂(2.29 g, 2.81 mmol) and sodium carbonate solution (21 ml, 2.0 M, 42 mmol). The mixture was heated to reflux for 20 h. Water and a solution of potassium carbonate was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with warm ethanol to give 3.0 g of the title compound.

LC-MS (Method 2): R_t=1.34 min; MS (ESIpos): m/z=551 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.395 (16.00), 2.084 (1.04), 2.349 (0.93), 2.361 (1.30), 2.373 (0.88), 2.518 (0.68), 2.523 (0.48), 3.351 (1.04), 3.506 (1.64), 3.734 (0.76), 5.758 (0.58), 7.174 (0.40), 8.274 (0.58), 8.287 (0.55), 8.797 (0.49).

Compound 60.02
6-(6-chloro-5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, 544 μmol) in dichloromethane (10 mL) and methanol (1.0 mL) was added HCl in dioxane (1.4 ml, 4.0 M, 5.4 mmol). The mixture was stirred at room temperature for 16 h. Further HCl in dioxane (0.5 ml, 4.0 M) was added and the mixture was stirred at room temperature for 24 h. The solvent was removed in vacuum to give 315 mg of the title compound as crude product that was used for the next step without purification.

Compound 61.01
tert-butyl 4-[(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (425 mg, 771 μmol) in tetrahydrofurane (50 mL) was added trimethylaluminum (770 μl, 2.0 M, 1.5 mmol), triphenylphosphine (20.2 mg, 77.1 μmol) and PdCl₂(PPh₃)₂(54.1 mg, 77.1 μmol). The mixture was heated to reflux for 2 h. Further trimethylaluminum (200 μL, 2.0 M, 0.4 mmol) was added and the mixture was heated to reflux for 0.5 h. Water and a solution of sodium bicarbonate was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 186 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=531.6 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (12.65), 1.137 (1.07), 1.396 (16.00), 2.349 (1.05), 2.361 (1.38), 2.373 (0.91), 3.353 (1.16), 3.504 (1.66), 3.939 (2.14), 5.759 (0.87), 8.266 (0.79), 8.279 (0.74), 8.799 (0.85).

Compound 61.02
6-(5-methoxy-6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (180 mg, 339 μmol) in dichloromethane (10 mL) and methanol (1.0 mL) was added HCl in dioxane (3.4 ml, 4.0 M, 14 mmol). The mixture was stirred at room temperature for 64 h. The solvent was removed in vacuum to give 180 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=431 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.062 (13.13), 1.233 (0.90), 1.320 (0.47), 1.542 (0.74), 2.467 (0.71), 2.518 (1.56), 2.523 (1.09), 2.555 (11.73), 3.161 (5.30), 3.408 (1.02), 3.431 (1.02), 3.440 (1.16), 3.444 (1.34), 3.455 (2.27), 3.457 (2.24), 3.466 (2.81), 3.468 (2.89), 3.484 (2.40), 3.486 (2.18), 3.494 (1.38), 3.497 (1.39), 3.502 (0.86), 3.507 (0.61), 3.513 (0.47), 3.562 (16.00), 3.660 (0.54), 3.664 (0.44), 3.672 (0.56), 3.674 (0.64), 3.697 (0.61), 3.699 (0.52), 3.707 (0.41), 3.711 (0.49), 3.962 (0.90), 4.487 (0.90), 5.759 (3.75), 7.381 (0.42), 7.548 (0.46), 7.587 (1.83), 7.613 (0.44), 7.630 (0.83), 7.642 (0.77), 7.673 (0.49), 7.791 (1.63), 7.813 (1.76), 8.112 (1.67), 8.116 (1.64), 8.133 (1.29), 8.137 (1.45), 8.459 (1.98), 8.462 (2.00), 8.560 (1.47), 8.574 (1.22), 8.893 (5.19), 9.879 (0.61).

Compound 62.01
tert-butyl 4-[(2-{[6-(2-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (2.00 g, 50% purity, 1.87 mmol, Compound 01.04) in 1,4-dioxane (15 ml) was added 2,4-dichloropyrimidine (836 mg, 5.61 mmol), Pd(dppf)Cl₂×CH₂Cl₂(153 mg, 187 μmol) and sodium carbonate solution (2.8 ml, 2.0 M, 5.6 mmol). The mixture was heated to reflux for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 400 mg of the title compound as a crude product that was used without further purification.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=521 [M+H]⁺.

Compound 62.02
6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-{[2-({6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (440 mg, 790 μmol) in dichloromethane (10 mL) and methanol (1.0 mL) was added HCl in dioxane (2.0 ml, 4.0 M, 7.9 mmol). The mixture was stirred at room temperature for 3 h. Further HCl in dioxane (2.0 ml, 4.0 M, 7.9 mmol) was added and the mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 590 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=457 [M+H]⁺.

Compound 64.01
6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-{[2-({6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (230 mg, 392 μmol) in dichloromethane (5.0 mL) and methanol (0.5 mL) was added HCl in dioxane (2.0 ml, 4.0 M, 7.8 mmol). The mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 230 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=487 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.345 (0.57), 0.356 (2.25), 0.360 (1.92), 0.368 (2.14), 0.372 (2.05), 0.382 (0.71), 0.555 (0.69), 0.565 (1.86), 0.570 (1.81), 0.575 (0.90), 0.581 (0.89), 0.585 (1.94), 0.590 (1.73), 0.601 (0.58), 1.000 (0.46), 1.278 (0.50), 1.286 (0.48), 1.298 (0.84), 1.310 (0.44), 1.318 (0.46), 2.518 (1.05), 2.523 (0.75), 3.327 (0.69), 3.431 (1.86), 3.455 (1.16), 3.466 (0.79), 3.468 (0.77), 3.484 (0.54), 3.486 (0.50), 3.497 (0.43), 3.561 (2.91), 3.830 (1.68), 3.962 (16.00), 4.161 (4.26), 4.178 (4.27), 4.282 (0.44), 4.393 (0.51), 7.561 (1.97), 7.749 (1.78), 7.771 (1.85), 8.143 (1.97), 8.148 (2.01), 8.165 (1.48), 8.169 (1.57), 8.487 (2.20), 8.490 (2.19), 8.542 (7.61), 8.557 (1.14).

Compound 65.01
6-[6-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-{[2-({6-[6-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (200 mg, 341 μmol) in dichloromethane (7.5 mL) and methanol (0.75 mL) was added HCl in 2-propanol (1.7 ml, 6.0 M, 10 mmol). The mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 210 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=487 [M+H]⁺.

Compound 66.01
6-(5-methyl-1,3,4-oxadiazol-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (44.7 mg, 91.1 μmol) in dichloromethane (1.0 mL) and methanol (0.1 mL) was added HCl in dioxane (1.5 ml, 6.0 mmol). The mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 26.0 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.78 min; MS (ESIpos): m/z=391 [M+H]⁺.

Compound 67.01
1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (587 mg), [(1RS)-2,2-dimethylcyclopropyl]methanol (1.00 g) and polymer bound triphenylphospine (5.67 g) were dissolved in 29 mL THF and heated to 60° C. At this temperature diisopropylazodicarboxylate (1.8 ml), dissolved in 4.8 mL toluene, was added dropwise. The mixture was stirred 1 hour at 60° C. The polymer was filtered off. The filter cake was washed with ethyl acetate. The filtrate was concentrated under reduced pressure. The crude product was purified by flash chromatography to provide the title compound as mixture with {1-[(RS-2,2-dimethylcyclopropyl)methyl]-1H-pyrazol-4-yl}boronic acid which was used without any further purification: 683 mg, 82% pure.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=277 [M+H]⁺.

Compound 67.02
4-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (683 mg, 82% purity; see Compound 67.01), Compound 67.02 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 153 mg of the title compound with 85% purity.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=257 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.29 (t, 1H), 0.50 (dd, 1H), 1.05 (s, 3H), 1.06-1.11 (m, 1H), 1.13 (s, 3H), 4.04-4.10 (m, 2H), 4.42 (br d, 4H), 6.48 (d, 1H), 6.59 (dd, 1H), 6.69 (d, 1H), 7.55 (d, 1H), 7.77 (d, 1H).

Compound 67.03
6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (140 mg, see Example 67.01), Compound 67.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 130 mg of 90% pure target compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.327 (0.60), 0.339 (1.02), 0.351 (0.65), 0.521 (0.65), 0.531 (0.67), 0.542 (0.75), 0.552 (0.63), 0.987 (0.70), 1.004 (0.75), 1.063 (16.00), 1.084 (0.45), 1.109 (0.51), 1.122 (0.54), 1.130 (0.56), 1.143 (0.57), 1.161 (9.81), 1.548 (0.51), 1.683 (1.04), 2.518 (1.69), 2.522 (1.16), 2.527 (0.84), 2.685 (1.77), 2.726 (5.79), 2.887 (6.98), 3.162 (6.06), 3.456 (0.69), 3.468 (0.67), 3.485 (0.57), 4.149 (2.83), 4.167 (3.07), 4.238 (2.60), 4.385 (0.40), 5.758 (2.35), 7.530 (1.24), 7.581 (0.75), 7.585 (0.67), 7.602 (1.30), 7.605 (1.33), 7.636 (2.18), 7.657 (1.03), 7.778 (1.62), 7.882 (2.81), 7.949 (0.88), 8.165 (2.58), 8.560 (0.89), 8.573 (0.81).

Compound 68.01
1-[(1-methylcyclopropyl)methyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with (1-methylcyclopropyl)methanol (1.00 g), Compound 68.01 was prepared analogously to the procedure for the preparation of Compound 67.01.

Yield: 1.24 g of the title compound in mixture with {1-[(1-methylcyclopropyl)methyl]-1H-pyrazole-4-yl}boronic acid with 60% purity.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=263 [M+H]⁺.

Compound 68.02
4-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}benzene-1,2-diamine

embedded image

Starting with 1-[(1-methylcyclopropyl)methyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (700 mg, see Compound 68.01), Compound 68.02 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 94 mg of the title compound with 85% purity.

LC-MS (Method 2): R_t=0.85 min; MS (ESIpos): m/z=243 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=0.30-0.38 (m, 2H), 0.58-0.64 (m, 2H), 0.96 (s, 3H), 3.91 (s, 2H), 4.44 (br s, 4H), 6.48 (d, 1H), 6.60 (dd, 1H), 6.70 (d, 1H), 7.55 (d, 1H), 7.80 (d, 1H).

Compound 68.03
6-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}-N-{4-[(1R or S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (85.0 mg, see Example 68.01), Compound 68.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 86 mg of 86% pure target compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=0.34-0.43 (m, 2H), 0.63-0.72 (m, 2H), 1.00 (s, 3H), 1.68 (br s, 3H), 3.14-3.54 (m, 9H), 4.00 (s, 2H), 7.53 (s, 1H), 7.58-7.69 (m, 3H), 7.79 (s, 1H), 7.88 (s, 1H), 8.21 (s, 1H), 8.57 (d, 1H), 9.71 (br s, 2H), 12.76-13.52 (m, 3H).—2 HCl.

Compound 69.01
(1-chlorocyclopropyl)methanol

embedded image

Lithiumaluminium hydride (1.02 g) was suspended in 14 mL THF. Ethyl 1-chlorocyclopropanecarboxylate (1.00 g; CAS-No. 1631082-82-0; corresponding carboxylic acid readily commercially available from multiple vendors), dissolved in 7 mL THF, was added dropwise to the reaction mixture under cooling with an ice bath. The mixture was stirred for 1 hour at rt. The reaction mixture was diluted with ethyl acetate and 5 mL water was added carefully. The grey slurry in the mixture was filtered off under vacuo. The clear filtrate was diluted with more water. The layers were separated and the organic layer was extracted with ethyl acetate twice. The combined organic layers were dried using a water resistant filter and the filtrate was concentrated under reduced pressure (200 mbar) at 50° C. to provide the 90% pure title compound: 704 mg

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=0.88-0.97 (m, 4H), 3.52 (d, 2H), 5.13 (t, 1H).

Compound 69.02
1-[(1-chlorocyclopropyl)methyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with (1-chlorocyclopropyl)methanol (695 mg, see Compound 69.01; CAS No. 154985-94-1), Compound 69.02 was prepared analogously to the procedure for the preparation of Compound 67.01.

Yield: 346 mg of the title compound with 92% purity.

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=283 [M+H]⁺.

Compound 69.03
4-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}benzene-1,2-diamine

embedded image

Starting with 1-[(1-chlorocyclopropyl)methyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (342 mg, see Compound 69.02), Compound 69.03 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 71 mg of the title compound with 85% purity.

LC-MS (Method 2): R_t=0.83 min; MS (ESIpos): m/z=263 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.08-1.15 (m, 2H), 1.19-1.26 (m, 2H), 4.35 (s, 2H), 4.37-4.70 (m, 4H), 6.49 (d, 1H), 6.61 (dd, 1H), 6.71 (d, 1H), 7.61 (s, 1H), 7.87 (s, 1H).

Compound 69.04
6-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (45.0 mg, see Example 69.01), Compound 69.04 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 48 mg of 90% pure target compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=477 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.09-1.18 (m, 2H), 1.24-1.32 (m, 2H), 1.66 (br s, 3H), 2.39-2.48 (m, 4H), 3.18-3.52 (m, 5H), 4.44 (s, 2H), 7.52 (br s, 1H), 7.56-7.69 (m, 3H), 7.80 (s, 1H), 7.94 (s, 1H), 8.27 (s, 1H), 8.56 (br d, 1H), 9.62 (br s, 2H), 12.96 (br s, 1H), 13.35 (br s, 1H).—1 HCl

Compound 70.01
3-chloro-4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine

embedded image

Starting with 1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (2.72 g, see Compound 55.01), Compound 70.01 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 1.22 g of the title compound with 85% purity.

LC-MS (Method 2): R_t=0.91 min; MS (ESIpos): m/z=299 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.40-1.56 (m, 1H), 1.59-1.76 (m, 1H), 2.17-2.31 (m, 1H), 4.15-4.36 (m, 2H), 4.72 (s, 2H), 4.83 (s, 2H), 6.47-6.53 (m, 1H), 6.55-6.62 (m, 1H), 7.61-7.70 (m, 1H), 7.95 (s, 1H).

Compound 70.02
tert-butyl 4-[(1R or 1S)-1-(2-{[7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 3-chloro-4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine (1.22 g, 85% purity, see Compound 70.01), Compound 70.02 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 854 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=613 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.46-1.60 (m, 1H), 1.64-1.80 (m, 1H), 2.22-2.44 (m, 5H), 3.25-3.33 (m, 4H), 3.40-3.50 (m, 1H), 4.19-4.39 (m, 2H), 6.95 (d, 1H), 7.08 (s, 1H), 7.19 (d, 1H), 7.45 (d, 1H), 7.83 (s, 1H), 8.15 (s, 1H), 8.27 (d, 1H), 10.96 (s, 1H), 12.31 (s, 1H).

Compound 70.03
7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[7-chloro-6-(1-{[(IRS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (850 mg, see Compound 70.02), Compound 70.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 795 mg of 90% pure target compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=513 [M+H]⁺.

Compound 71.01
1-(cyclopentylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with (bromomethyl)cyclopentane (420 mg), Compound 71.01 was prepared analogously to the procedure for the preparation of Compound 39.01.

Yield: 293 mg of the title compound with 80% purity.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=277 [M+H]⁺.

Compound 71.02
4-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-2-nitroaniline

embedded image

Starting with 1-(cyclopentylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (290 mg, see Compound 71.01), Compound 71.02 was prepared analogously to the procedure for the preparation of Compound 39.02.

Yield: 135 mg of the title compound with 91% purity.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=287 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.20-1.33 (m, 2H), 1.43-1.67 (m, 6H), 2.31-2.42 (m, 1H), 4.00 (d, 2H), 7.03 (d, 1H), 7.42 (s, 2H), 7.65 (dd, 1H), 7.81 (d, 1H), 8.09 (d, 1H), 8.16 (s, 1H)

Compound 71.03
4-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

Starting with 4-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-2-nitroaniline (180 mg, see Compound 71.02), Compound 71.03 was prepared analogously to the procedure for the preparation of Compound 39.03.

Yield: 63 mg of the title compound with 62% purity.

LC-MS (Method 2): R_t=0.96 min; MS (ESIpos): m/z=257 [M+H]⁺.

Compound 71.04
6-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (37.7 mg, see Example 71.01), Compound 71.04 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 42 mg of 90% pure target compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=471 [M+H]⁺.

Compound 72.01
4-[1-(propan-2-yl)-1H-pyrazol-5-yl]benzene-1,2-diamine

embedded image

Starting with 1-(propan-2-yl)-1H-pyrazol-5-yl]boronic acid (570 mg), Compound 72.01 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 550 mg of the title compound with 90% purity.

LC-MS (Method 2): R_t=0.75 min; MS (ESIpos): m/z=217 [M+H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]=1.33 (d, 6H), 4.50-4.60 (m, 1H), 4.62 (s, 2H), 4.70 (s, 2H), 6.04 (d, 1H), 6.40 (dd, 1H), 6.53 (d, 1H), 6.57 (d, 1H), 7.40 (d, 1H).

Compound 72.02
N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (288 mg, see Example 72.01), Compound 72.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 377 mg of 92% pure target compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=431 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.40 (d, 6H), 1.57-1.74 (m, 3H), 3.32-3.54 (m, 4H), 3.63-3.75 (m, 1H), 4.50-4.61 (m, 1H), 6.34 (d, 1H), 7.41 (dd, 1H), 7.49-7.65 (m, 3H), 7.69 (s, 1H), 7.78 (d, 1H), 8.37-8.62 (m, 1H), 9.29-9.77 (m, 2H), 13.02-13.28 (m, 1H).—4 piperazine-H not detectable.

Compound 73.01
4-(1,4-dimethyl-1H-pyrazol-5-yl)benzene-1,2-diamine

embedded image

Starting with (1,4-dimethyl-1H-pyrazol-5-yl)boronic acid (434 mg), Compound 73.01 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 54 mg of the title compound with 90% purity.

LC-MS (Method 2): R_t=0.68 min; MS (ESIpos): m/z=203 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.91 (s, 3H), 3.63 (s, 3H), 4.59 (br s, 2H), 4.69 (br s, 2H), 6.37 (dd, 1H), 6.49 (d, 1H), 6.58 (d, 1H), 7.22 (s, 1H).

Compound 73.02
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1,4-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(1,4-dimethyl-1H-pyrazol-5-yl)benzene-1,2-diamine (54.4 mg, see Compound 73.01), Compound 73.02 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 29 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=517 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.26-1.31 (m, 3H), 1.38 (s, 9H), 1.99 (s, 3H), 2.23-2.44 (m, 4H), 3.25-3.32 (m, 4H), 3.45 (q, 1H), 3.71 (br d, 3H), 6.88-7.63 (m, 6H), 8.27 (d, 1H), 10.57-10.73 (m, 1H), 12.21 (br d, 1H).

Compound 73.03
6-(1,4-dimethyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1,4-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (29.3 mg, see Compound 73.02), Compound 73.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 33 mg of 85% pure target compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=418 [M+H]⁺.

Compound 74.01
1-[(1RS)-1-cyclopropylethyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with (1RS)-1-cyclopropylethanol (820 μl), Compound 74.01 was prepared analogously to the procedure for the preparation of Compound 67.01.

Yield: 470 mg of the title compound with 85% purity.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=263 [M+H]⁺.

Compound 74.02
4-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}benzene-1,2-diamine

embedded image

Starting from 1-[(1RS)-1-cyclopropylethyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (393 mg, see Compound 74.01), Compound 74.02 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 59 mg of the title compound with 80% purity.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=243 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=0.25-0.37 (m, 2H), 0.38-0.48 (m, 1H), 0.52-0.62 (m, 1H), 1.15-1.29 (m, 1H), 1.49 (d, 3H), 3.59 (dq, 1H), 4.42 (br d, 4H), 6.48 (d, 1H), 6.59 (dd, 1H), 6.70 (d, 1H), 7.55 (d, 1H), 7.86 (d, 1H).

Compound 74.03
6-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (80.0 mg, see Example 74.01), Compound 74.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 88 mg of 95% pure target compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=457 [M+H]⁺.

Compound 75.01
1-(cyclobutylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

Starting with (bromomethyl)cyclobutane (870 μl), Compound 75.01 was prepared analogously to the procedure for the preparation of Compound 39.01.

Yield: 1.0 g of the title compound with 84% purity.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=263 [M+H]⁺.

Compound 75.02
3-chloro-4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

Starting with 1-(cyclobutylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.00 g, see Compound 75.01), Compound 75.02 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 171 mg of the title compound with 86% purity.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=277 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.68-1.90 (m, 4H), 1.92-2.04 (m, 2H), 2.69-2.80 (m, 1H), 4.12 (d, 2H), 4.70 (s, 2H), 4.81 (s, 2H), 6.46-6.52 (m, 1H), 6.54-6.60 (m, 1H), 7.58 (s, 1H), 7.87 (s, 1H).

Compound 75.03
7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (110 mg, see Example 75.01), Compound 75.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 122 mg of 93% pure target compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=491 [M+H]⁺.

Compound 76.01
tert-butyl 4-[(2-{[6-(6-cyclopropylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-Butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (1.00 g, see Compound 01.04), 4-chloro-6-cyclopropylpyrimidine (868 mg), [1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloride dichloromethane adduct (153 mg) and aqueous sodium carbonate solution (2.8 ml, 2.0 M) were dissolved in 15 mL dioxane and the reaction mixture was stirred at 120° C. overnight. The reaction mixture was treated with water and dichloromethane. The aqueous layer was extracted with dichloromethane three times, the collected organic layers were washed with water and brine, filtered through a silicone coated filter and concentrated under reduced pressure. The crude product was purified by flash chromatography.

Yield: 1.3 g of 70% pure target compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=527 [M+H]⁺.

Compound 76.02
6-(6-cyclopropylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(6-cyclopropylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (1.26 g, see Compound 76.01), Compound 76.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 1.3 g of 81% pure target compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=428 [M+H]⁺.

Compound 77.01
tert-butyl 4-[(2-{[6-(6-cyanopyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Yield: 113 mg of the title compound with 36% purity.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=512 [M+H]⁺.

Compound 77.02
6-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyrimidine-4-carbonitrile hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(6-cyanopyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (113 mg, see Compound 77.01), Compound 77.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 120 mg of 38% pure target compound.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=412 [M+H]⁺.

Compound 78.01
tert-butyl 4-{[2-({6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 240 mg of the title compound with 63% purity.

LC-MS (Method 2): R_t=1.34 min; MS (ESIpos): m/z=529 [M+H]⁺.

Compound 78.02
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (240 mg, see Compound 78.01), Compound 78.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 350 mg of 70% pure target compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=429 [M+H]⁺.

Compound 79.01
tert-butyl 4-{[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 891 mg of the title compound with 76% purity.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=531 [M+H]⁺.

Compound 79.02
6-[6-(methoxymethyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (72.0 mg, see Compound 79.01), Compound 79.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 465 mg of 61% pure target compound.

LC-MS (Method 2): R_t=0.89 min; MS (ESIpos): m/z=431 [M+H]⁺.

Compound 80.01
tert-butyl 4-[(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (3.0 g 756 mg, 22% purity, see Compound 01.04), Compound 80.01 was prepared analogously to the procedure for the preparation of Compound 76.01.

Yield: 542 mg of the title compound as a crude product, that was used in the next step without further purification.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=521 [M+H]⁺.

Compound 80.02
6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (310 mg, see Example 80.01), Compound 80.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 311 mg of 79% pure target compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=457 [M+H]⁺.

Compound 83.01
4-(6-chloro-5-methoxypyrimidin-4-yl)-2-nitroaniline

embedded image

2-Nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (5.18 g), 4,6-dichloro-5-methoxypyrimidine (3.86 g), tetrakis(triphenylphosphane)palladium(0) (1.13 g) and aqueous sodium carbonate solution (29 ml, 2.0 M) were dissolved in 160 mL dioxane. The reaction mixture was stirred at 80° C. for 3 h. Undissolved compounds were filtered off and washed with dichloromethane. The filtrate was concentrated under reduced pressure, treated with ethyl acetate and the undissolved precipitate was filtered off. The filtrate was concentrated under reduced pressure and purified by flash chromatography. The precipitate and the purified compound were combined.

Yield: 1.92 g of 100% pure title compound.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=281 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=3.70-3.83 (m, 3H), 7.15 (d, 1H), 7.94 (s, 2H), 8.20 (dd, 1H), 8.79 (s, 1H), 8.95 (d, 1H).

Compound 83.02
4-(6-chloro-5-methoxypyrimidin-4-yl)benzene-1,2-diamine

embedded image

5-(6-chloro-5-methoxypyrimidin-4-yl)-2-nitroaniline (2.03 g, see Compound 83.01) was dissolved in 160 mL dichloromethane and platinum on activated charcoal (1.41 g, 10% purity) was added. The reaction vessel was evacuated and flushed with hydrogen. The mixture was stirred at room temperature for 5 h. Platinum on activated charcoal (0.70 g, 10% purity) was added. The reaction vessel was evacuated and flushed with hydrogen. The mixture was stirred at room temperature overnight. The catalyst was carefully filtered off, washed with dichloromethane and ethanol and the combined filtrates were concentrated under reduced pressure.

Yield: 1.01 g of 87% pure title compound.

LC-MS (Method 2): R_t=0.82 min; MS (ESIpos): m/z=251 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=3.68 (s, 3H), 4.69 (s, 2H), 5.27 (s, 2H), 6.58 (d, 1H), 7.43 (dd, 1H), 7.50 (d, 1H), 8.52-8.70 (m, 1H)

Compound 83.03
6-(5-methoxy-6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (630 mg, see Example 83.02), Compound 83.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 805 mg of 96% pure target compound.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=446 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.69 (d, 3H), 2.55 (s, 3H), 3.19-3.52 (m, 9H), 3.59-3.65 (m, 3H), 7.57 (s, 1H), 7.67 (br s, 1H), 7.80 (d, 1H), 8.07-8.18 (m, 1H), 8.46 (d, 1H), 8.58 (d, 1H), 8.89 (s, 1H), 9.72 (br s, 2H), 13.25 (br s, 2H).—1 HCl

Compound 84.01
6-[6-(methoxymethyl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (325 mg, see Example 84.01), Compound 84.01 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 378 mg of the title 85% pure target compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=445 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.70 (br d, 3H), 3.21-3.53 (m, 12H), 4.60 (s, 2H), 7.57-7.60 (m, 1H), 7.66-7.73 (m, 1H), 7.80 (d, 1H), 8.00 (d, 1H), 8.24 (dd, 1H), 8.55 (d, 1H), 8.58 (d, 1H), 9.20 (d, 1H), 9.79 (br s, 2H), 13.31 (br s, 3H).—2 HCl

Compound 85.01
4-(6-chloropyrimidin-4-yl)-2-nitroaniline

embedded image

To a stirred solution of 2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (5.20 g, 97% purity) in 1-propanol (110 ml) was added potassium carbonate solution (19 ml, 2.0 M), 4,6-dichloropyrimidine (3.23 g, 97% purity), triphenylphosphine (250 mg) and PdCl₂(PPh₃)₂(672 mg). The mixture was heated to 90° C. for 3 h. Water was added and a solid was collected by filtration. The solid was dissolved in acetone, filtered and the solution was concentrated in vacuum to give a solid that was triturated with ethanol to give 3.10 g of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=251 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.084 (1.18), 2.518 (2.66), 2.523 (1.73), 7.111 (0.53), 7.119 (8.72), 7.141 (8.76), 7.155 (0.53), 7.178 (0.46), 7.529 (0.43), 7.852 (0.55), 7.936 (7.61), 8.238 (14.54), 8.241 (16.00), 8.259 (4.08), 8.264 (4.34), 8.944 (8.80), 8.950 (9.06), 8.995 (12.27), 8.998 (11.92), 9.026 (0.53), 9.031 (0.55).

Compound 85.02
4-(6-chloropyrimidin-4-yl)benzene-1,2-diamine

embedded image

To a stirred solution of 4-(6-chloropyrimidin-4-yl)-2-nitroaniline (1.00 g) in ethyl acetate (150 ml) was added platinum on carbon (389 mg, 10% w/w platinum) and the mixture was stirred at r.t. in a hydrogen atmosphere for 2 h. The mixture was filtered and the solution was concentrated in vacuum to give 480 mg of the title compound that was used without further purification.

LC-MS (Method 2): R_t=0.76 min; MS (ESIpos): m/z=221 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.053 (0.50), 1.153 (0.73), 1.171 (1.38), 1.189 (0.68), 1.987 (2.54), 2.518 (1.36), 2.523 (0.93), 4.016 (0.57), 4.034 (0.56), 4.689 (2.71), 5.332 (5.05), 6.495 (0.83), 6.515 (0.46), 6.520 (0.46), 6.564 (12.78), 6.572 (0.65), 6.585 (13.12), 6.592 (0.58), 6.674 (0.59), 6.679 (0.57), 7.363 (6.29), 7.368 (6.51), 7.384 (5.58), 7.389 (6.48), 7.475 (13.57), 7.480 (11.64), 7.849 (16.00), 7.852 (15.42), 8.828 (15.58), 8.831 (14.87).

Compound 85.03
6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

tert-Butyl 4-{(1R or 1S)-1-[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (62.0 mg, see Example 85.02) was dissolved in 1.4 mL dichloromethane and 130 μL methanol and cooled to 0° C. At this temperature hydrochloric acid (270 μl, 4.0 M in dioxane) was added and this mixture was stirred under cooling for 2 hours. The reaction mixture was stirred under cooling for additional 2 hours and stored in the refrigerator overnight, during which it solidified to assume a jelly-like texture. The jelly-like reaction mixture was diluted with dichloromethane/isopropanol (7:3) and saturated sodium bicarbonate solution. After several minutes of shaking, the jelly got solved. The layers were separated and the aqueous layer was extracted with dichloromethane/isopropanol (7:3) twice. The combined organic layers were concentrated under reduced pressure. The crude product was used without further purification.

Yield: 46 mg of 81% pure target compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=471 [M+H]⁺.

Compound 86.01
4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-3-fluorobenzene-1,2-diamine

embedded image

Starting with 1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (2.72 g, see Compound 55.01), Compound 86.01 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 1.67 g of the title compound with 75% purity.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=283 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.41-1.56 (m, 1H), 1.59-1.76 (m, 1H), 2.16-2.31 (m, 1H), 4.17-4.31 (m, 2H), 4.43 (s, 2H), 4.79 (s, 2H), 6.29-6.42 (m, 1H), 6.66 (t, 1H), 7.72 (s, 1H), 7.92 (d, 1H)

Compound 86.02
6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-7-fluoro-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-7-fluoro-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.50 g, see Example 86.01), Compound 86.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 1.7 g of 90% pure target compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=497 [M+H]⁺.

Compound 87.01
1-(2,2-difluoroethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

embedded image

4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.00 g) was dissolved in 9.9 mL DMF and potassium carbonate (2.14 g) and 2,2-difluoroethyl trifluoromethanesulfonate (970 μl) were added. This mixture was stirred at 80° C. overnight. The reaction mixture was diluted with ethyl acetate and water. The layers were separated and the aqueous layer was extracted with ethyl acetate. The combined organic layers were dried using a water resistant filter. The filtrate was concentrated under reduced pressure. The crude product was used without further purification.

Yield: 1.8 g of 69% pure target compound.

LC-MS (Method 2): R_t=0.82 min; MS (ESIpos): m/z=259 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.25 (s, 12H), 4.64 (td, 2H), 6.17-6.53 (m, 1H), 7.65 (s, 1H), 7.99 (s, 1H)

Compound 87.02
4-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

Starting with 1-(2,2-difluoroethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.60 g, see Compound 87.01), Compound 87.02 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 421 mg of the title compound with 68% purity.

LC-MS (Method 2): R_t=0.68 min; MS (ESIpos): m/z=239 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]=4.45 (s, 2H), 4.47 (s, 2H), 4.58 (td, 2H), 6.18-6.52 (m, 2H), 6.56-6.63 (m, 1H), 6.69 (d, 1H), 7.66 (s, 1H), 7.85 (s, 1H).

Compound 87.03
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with 4-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (415 mg, 85% purity; see Compound 87.02), Compound 87.03 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 549 mg of the 96% pure title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=553 [M+H]⁺.

Compound 87.04
6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (549 mg, see Compound 87.03), Compound 87.04 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 706 mg of the 85% pure target compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=453 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.70 (br d, 3H), 3.20-3.53 (m, 9H), 4.68 (td, 2H), 6.23-6.58 (m, 1H), 7.55 (s, 2H), 7.60 (dd, 1H), 7.64-7.71 (m, 2H), 7.79 (d, 1H), 7.96-8.01 (m, 1H), 8.22-8.27 (m, 1H), 8.57 (d, 1H), 9.79 (br s, 3H).—1 HCl

Compound 88.01
4-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]benzene-1,2-diamine

embedded image

Starting with 1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-(trifluoromethyl)-1H-pyrazole (903 mg), Compound 88.01 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 590 mg of the title compound with 91% purity.

LC-MS (Method 2): R_t=0.92 min; MS (ESIpos): m/z=257 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=3.86 (s, 3H), 4.66 (s, 2H), 4.85 (s, 2H), 6.53-6.62 (m, 3H), 6.67 (d, 1H).

Compound 88.02
6-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (250 mg, see Example 88.01), Compound 88.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 201 mg of the 95% pure target compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.55 (br s, 3H), 3.10-3.48 (m, 5H), 3.53-3.60 (m, 4H), 3.96 (s, 3H), 6.95 (s, 1H), 7.40-7.66 (m, 3H), 7.74-7.87 (m, 2H), 8.53 (br s, 1H), 8.87-9.76 (m, 2H), 12.51-13.74 (m, 2H).—1 HCl

Compound 89.01
4-(1,3-dimethyl-1H-pyrazol-5-yl)benzene-1,2-diamine

embedded image

Starting with (1,3-dimethyl-1H-pyrazol-5-yl)boronic acid (600 mg), Compound 89.01 was prepared analogously to the procedure for the preparation of Compound 44.02.

Yield: 350 mg of the title compound with 96% purity.

LC-MS (Method 2): R_t=0.67 min; MS (ESIpos): m/z=203 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=2.11 (s, 3H), 3.68 (s, 3H), 4.59 (s, 2H), 4.70 (s, 2H), 5.90 (s, 1H), 6.42-6.50 (m, 1H), 6.51-6.56 (m, 1H), 6.59 (d, 1H).

Compound 89.02
6-(1,3-dimethyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1,3-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (190 mg, see Example 89.01), Compound 89.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 164 mg of the 95% pure target compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=417 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]=1.52-1.76 (m, 3H), 2.19 (s, 3H), 2.97-3.51 (m, 5H), 3.56 (s, 3H), 3.79 (s, 4H), 6.22 (s, 1H), 7.42-7.80 (m, 5H), 8.57 (br d, 1H), 9.54 (br s, 2H), 13.12 (br s, 2H).—1 HCl

Compound 90.01
6-{6-[(3-methoxypropyl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-({2-[(6-{6-[(3-methoxypropyl)amino]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate (90.0 mg, see Example 90.01), Compound 90.01 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 86 mg of the 96% pure target compound.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=475 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.229 (0.85), 1.365 (1.03), 1.382 (1.10), 1.828 (2.30), 1.845 (3.42), 1.861 (2.51), 2.326 (1.03), 2.669 (1.03), 3.207 (1.69), 3.228 (5.14), 3.257 (16.00), 3.343 (1.73), 3.359 (2.53), 3.414 (6.28), 3.429 (7.19), 3.444 (3.65), 3.467 (1.10), 3.485 (1.14), 3.502 (1.37), 3.563 (4.65), 3.578 (2.51), 3.661 (0.59), 3.674 (0.64), 3.697 (0.64), 3.712 (0.57), 3.925 (0.69), 4.315 (1.01), 5.759 (1.25), 7.159 (6.30), 7.549 (3.31), 7.685 (0.61), 7.823 (3.72), 8.096 (2.19), 8.215 (0.50), 8.521 (1.82), 8.719 (0.53), 8.808 (3.11), 8.961 (0.41), 9.718 (0.73), 9.877 (0.66).

Compound 91.01
6-(6-ethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(2-{[6-(6-ethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (160 mg, see Example 91.01), Compound 91.01 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 169 mg of the 90% pure target compound.

LC-MS (Method 2): R_t=0.93 min; MS (ESIpos): m/z=416 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.31 (t, 3H), 2.85 (q, 2H), 3.19-3.53 (m, 8H), 4.42 (br s, 2H), 7.57 (s, 2H), 7.79 (d, 1H), 8.03 (s, 1H), 8.23 (dd, 1H), 8.51-8.60 (m, 2H), 9.17 (d, 1H), 9.75 (br s, 2H), 13.18 (br s, 2H).—1 HCl.

Compound 92.01
6-[6-(3,5-dimethyl-1,2-oxazol-4-yl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(3,5-dimethyl-1,2-oxazol-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (100 mg, see Example 92.01), Compound 92.01 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 110 mg of the 92% pure target compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=482 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=2.53 (s, 3H), 2.74 (s, 3H), 3.16-3.52 (m, 8H), 4.28-4.51 (m, 2H), 7.54-7.64 (m, 2H), 7.82 (d, 1H), 8.13 (d, 1H), 8.28 (dd, 1H), 8.50-8.61 (m, 2H), 9.31 (d, 1H), 9.74 (br s, 2H), 12.88-13.64 (m, 2H).—1 HCl

Compound 93.01
tert-butyl 4-{[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 106 mg of the title compound with 73% purity.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]: 0.797 (0.47), 0.814 (0.49), 0.821 (0.49), 0.904 (0.48), 1.299 (0.97), 1.386 (1.52), 1.395 (14.74), 1.881 (0.85), 1.907 (0.45), 1.974 (0.78), 1.987 (0.74), 2.326 (0.51), 2.331 (0.45), 2.346 (1.03), 2.357 (1.53), 2.369 (1.09), 3.499 (2.35), 5.284 (0.47), 5.758 (16.00), 6.924 (0.57), 6.936 (0.54), 7.181 (0.90), 7.888 (0.59), 8.252 (0.92), 8.264 (0.82), 8.498 (1.40).

Compound 93.02
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (106 mg, see Compound 93.01), Compound 93.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 104 mg of the 73% pure target compound.

LC-MS (Method 2): R_t=0.96 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.064 (1.53), 1.144 (0.48), 1.322 (3.45), 1.907 (0.62), 1.984 (2.30), 1.991 (2.35), 2.000 (2.59), 2.016 (1.96), 2.059 (1.68), 2.073 (1.68), 2.518 (16.00), 2.523 (10.49), 3.164 (1.20), 3.345 (1.92), 3.384 (1.20), 3.457 (0.62), 3.469 (0.62), 3.487 (0.62), 3.499 (0.62), 3.606 (0.77), 3.621 (0.86), 3.636 (0.91), 3.677 (1.87), 3.695 (2.44), 3.713 (2.59), 3.731 (2.49), 4.147 (1.68), 5.480 (1.34), 6.963 (0.43), 7.124 (3.93), 7.487 (1.63), 7.553 (0.48), 7.581 (0.86), 7.606 (0.57), 7.657 (0.62), 7.788 (1.15), 7.809 (1.49), 7.920 (1.20), 7.942 (0.91), 8.191 (1.82), 8.284 (1.05), 8.493 (0.96), 8.506 (0.86), 8.720 (0.62), 8.805 (3.69).

Compound 94.01
tert-butyl 4-{[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 119 mg of the title compound with 77% purity.

LC-MS (Method 4): R_t=1.20 min; MS (ESIpos): m/z=573 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]: 1.172 (0.52), 1.300 (1.65), 1.386 (2.45), 1.395 (16.00), 1.987 (0.92), 2.327 (0.51), 2.331 (0.60), 2.345 (1.31), 2.357 (1.66), 2.369 (1.03), 2.518 (1.90), 2.523 (1.30), 3.308 (0.42), 3.353 (1.68), 3.364 (1.19), 3.378 (0.61), 3.471 (0.51), 3.499 (1.61), 3.621 (0.71), 3.634 (0.89), 3.645 (0.83), 3.666 (0.44), 3.703 (5.60), 5.759 (2.28), 6.925 (0.40), 6.938 (0.40), 7.184 (0.83), 8.251 (0.89), 8.264 (0.72), 8.568 (1.19), 8.570 (1.22).

Compound 94.02
6-[6-(morpholin-4-yl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (115 mg, see Compound 94.01), Compound 94.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 142 mg of the 78% pure target compound.

LC-MS (Method 2): R_t=0.87 min; MS (ESIpos): m/z=470 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.064 (2.31), 1.322 (4.84), 2.327 (1.84), 2.669 (1.81), 3.163 (1.03), 3.384 (2.69), 3.564 (16.00), 3.615 (1.16), 3.754 (5.34), 3.765 (4.28), 3.936 (3.72), 4.312 (1.09), 5.760 (6.41), 5.800 (1.22), 6.797 (0.41), 6.820 (0.41), 7.088 (0.78), 7.353 (0.56), 7.438 (1.28), 7.460 (1.34), 7.474 (3.84), 7.517 (2.06), 7.660 (0.91), 7.783 (1.47), 7.806 (1.59), 7.981 (1.31), 8.000 (0.94), 8.253 (1.69), 8.338 (1.25), 8.499 (1.22), 8.525 (0.84), 8.810 (3.03), 9.607 (0.47).

Compound 95.01
tert-butyl 4-{[2-({6-[6-(methylsulfanyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 178 mg of the title compound with 48% purity.

LC-MS (Method 4): R_t=1.32 min; MS (ESIpos): m/z=534 [M+H]⁺.

Compound 95.02
6-[6-(methylsulfanyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(methylsulfanyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (170 mg, see Compound 95.01), Compound 95.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 331 mg of the 33% pure target compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=433 [M+H]⁺.

Compound 96.01
2-(6-chloropyrimidin-4-yl)propan-2-ol

embedded image

Methyl magnesiumbromide (12 ml, 1.4 M in THF/toluene 1:3) was treated with 5.5 mL THF and cooled down to −78° C. (ethanol/dry ice). methyl 6-chloropyrimidine-4-carboxylate (1.00 g), suspended in 8.5 mL THF, was added. The reaction mixture was stirred at this temperature for 2 hours. The reaction mixture was allowed to reach room temperature over night. The reaction mixture was poured into HCl (1 mol/L) and stirred for 15 minutes. Then the pH was adjusted to 7 by addition of saturated aqueous sodium bicarbonate solution. The aqueous layer was extracted three times with ethyl acetate, the combined organic layers were washed with water and brine, filtered through a silicone coated filter and concentrated under reduced pressure. The crude product was purified by flash chromatography.

Yield: 180 mg of the 90% pure target compound.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.42 (s, 6H), 5.61 (s, 1H), 7.77 (d, 1H), 8.98 (d, 1H).

Compound 96.02
2-[6-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyrimidin-4-yl]propan-2-ol hydrochloride

embedded image

Starting with tert-butyl 4-{[2-({6-[6-(2-hydroxypropan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (100 mg, see Example 96.01), Compound 96.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 122 mg of the 94% pure target compound.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=445 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.50 (s, 6H), 3.24-3.52 (m, 8H), 4.45 (br s, 2H), 7.53-7.66 (m, 2H), 7.81 (d, 1H), 8.22 (dd, 1H), 8.26 (d, 1H), 8.49-8.60 (m, 2H), 9.18 (d, 1H), 9.80 (br s, 2H), 13.24 (br s, 1H). —OH not detectable

Compound 97.01
(rac)-1-(6-chloropyrimidin-4-yl)ethanol

embedded image

1-(6-chloropyrimidin-4-yl)ethanone (1.00 g) was suspended in 5 mL methanol and cooled to 0° C. with an ice bath. Then sodium borohydride (266 m g) was added portionwise, and the resulting mixture was then stirred at room temperature for 1.5 hours. Methanol was removed under reduced pressure, the residue was treated with water and the pH was adjusted to 3 by addition of aqueous HCl (1 mol/L). The aqueous layer was extracted with ethyl acetate three times, washed with water and brine, filtered through a silicone coated filter and dried under reduced pressure. The crude product was used without further purification.

Yield: 614 mg of the 99% pure target compound.

LC-MS (Method 2): R_t=0.61 min; MS (ESIpos): m/z=161 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=1.38 (d, 3H), 4.62-4.78 (m, 1H), 5.75 (d, 1H), 7.68 (s, 1H), 8.96 (d, 1H).

Compound 97.02
(rac)-1-[6-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyrimidin-4-yl]ethanol hydrochloride

embedded image

Starting with (rac)-tert-butyl 4-({2-[(6-{6-[1-hydroxyethyl]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate (132 mg, see Example 97.01), Compound 97.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 164 mg of the 32% pure target compound.

LC-MS (Method 2): R_t=0.84 min; MS (ESIpos): m/z=432 [M+H]⁺.

Compound 98.01
3-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine

embedded image

Starting with 4-bromo-3-chlorobenzene-1,2-diamine (1.50 g) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi-1,3,2-dioxaborolane, Compound 98.01 was prepared analogously to the procedure for the preparation of Compound 01.04.

Yield: 650 mg of the 96% pure target compound.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=269 [M+H]⁺.

Compound 98.02
3-chloro-4-(6-methylpyrimidin-4-yl)benzene-1,2-diamine

embedded image

Starting with 3-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (540 mg) and 4-chloro-6-methylpyrimidine (775 mg), Compound 98.02 was prepared analogously to the procedure for the preparation of Compound 76.01.

Yield: 390 mg of the 86% pure target compound.

LC-MS (Method 2): R_t=0.71 min; MS (ESIpos): m/z=235 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=2.47 (s, 3H), 4.88 (s, 2H), 5.27 (s, 2H), 6.57 (d, 1H), 6.77 (d, 1H), 7.54 (d, 1H), 8.99 (d, 1H).

Compound 98.03
7-chloro-6-(6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[7-chloro-6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (245 mg, see Example 98.01), Compound 98.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 278 mg of the 90% pure target compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=450 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.68 (br d, 3H), 2.56 (s, 3H), 3.14-3.53 (m, 5H), 4.61 (br s, 4H), 7.39 (br s, 1H), 7.46 (d, 1H), 7.55 (br s, 1H), 7.61-7.70 (m, 1H), 7.78 (s, 1H), 8.49 (br d, 1H), 9.07-9.20 (m, 1H), 9.59 (br s, 2H), 11.25-13.05 (m, 1H).

Compound 99.01
tert-butyl 4-[(1R or 1S)-1-(2-{[7-chloro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 3-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (870 mg, see Compound 98.01), Compound 99.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 940 mg of the 44% pure title compound.

LC-MS (Method 2): R_t=1.56 min; MS (ESIpos): m/z=583 [M+H]⁺.

Compound 99.02
tert-butyl 4-{(1R or 1S)-1-[2-({7-chloro-6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[7-chloro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (200 mg, see Compound 99.01), Compound 99.02 was prepared analogously to the procedure for the preparation of Compound 60.01.

Yield: 111 mg of the 41% pure target compound.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=580 [M+H]⁺.

Compound 99.03
7-chloro-6-[6-(methoxymethyl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({7-chloro-6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (105 mg, see Compound 99.02), Compound 99.03 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 151 mg of the 47% pure target compound.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=481 [M+H]⁺.

Compound 100.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

tert-Butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (85.0 mg, see Example 85.01) was dissolved in 2 mL dioxane and N-methylmethanamine (120 μl, 2.0 M in THF) was added. This mixture was stirred 3 hour at 110° C. N-methylmethanamine (240 μl, 2.0 M in TH F) were added and the mixture was stirred additional 2 hours at 110° C. The reaction mixture was concentrated under reduced pressure to provide the crude title compound which was used without further purification.

Yield: 119 mg of the 87% pure target compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=544 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (br d, 3H), 1.34-1.42 (m, 9H), 2.23-2.45 (m, 4H), 3.15 (s, 6H), 3.27-3.33 (m, 4H), 3.44 (br s, 1H), 6.95 (br d, 1H), 7.08 (s, 1H), 7.17 (s, 1H), 7.46 (br s, 1H), 7.89 (br d, 1H), 8.27 (br d, 2H), 8.53 (d, 1H), 10.72 (br s, 1H), 12.27 (br s, 1H).

Compound 100.02
6-[6-(dimethylamino)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

Starting with tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (115 mg, see Compound 100.01), Compound 100.02 was prepared analogously to the procedure for the preparation of Compound 39.05.

Yield: 108 mg of the 90% pure target compound.

LC-MS (Method 2): R_t=0.99 min; MS (ESIpos): m/z=444 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]: 1.225 (0.48), 1.652 (1.18), 2.518 (13.32), 3.378 (1.16), 3.416 (1.02), 3.452 (0.99), 3.464 (0.93), 3.480 (0.83), 3.492 (0.68), 3.559 (16.00), 3.656 (0.42), 3.671 (0.48), 3.695 (0.48), 3.707 (0.42), 3.991 (0.63), 4.177 (0.47), 4.198 (0.45), 7.280 (3.81), 7.554 (1.56), 7.810 (1.28), 7.832 (1.57), 7.961 (1.28), 7.982 (0.99), 8.219 (2.07), 8.535 (0.90), 8.547 (0.90), 8.691 (0.45), 8.805 (4.00).

Compound 107.01.01
6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

embedded image

To a stirred solution of tert-butyl 4-{[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (200 mg, see Example 107.01.01) in dichloromethane (8.2 mL) and methanol (820 μL) was added HCl in dioxane (3.6 ml, 4.0 M). The mixture was stirred at room temperature for 16 h. The solvent was removed in vacuum to give 220 mg of the title compound as crude product that was used for the next step without purification.

LC-MS (Method 2): R_t=0.94 min; MS (ESIneg): m/z=458 [M−H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.023 (9.11), 1.039 (9.21), 2.518 (1.16), 2.523 (0.80), 3.160 (0.86), 3.384 (16.00), 3.751 (0.63), 3.766 (0.83), 3.782 (0.64), 4.410 (0.47), 5.760 (2.59), 7.577 (1.91), 7.749 (0.89), 7.753 (0.88), 7.771 (1.38), 7.774 (1.42), 7.829 (2.01), 7.851 (1.16), 8.134 (1.97), 8.533 (1.16), 8.546 (1.08), 8.659 (3.77).

The compounds in the table 2 below were prepared analogously to the procedure for the preparation of Compound 107.01.01.

TABLE 2

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Compound
Starting material

Compound 107.02.01

embedded image

6[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.03 min; MS (ESIneg): m/z = 472 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.331 (1.30), 2.336 (0.59),

2.518 (6.93), 2.522 (4.80), 2.673 (1.36), 2.677 (0.65), 2.751 (0.68),

3.164 (1.95), 3.334 (0.87), 3.386 (16.00), 3.457 (0.59), 3.469 (0.62),

3.486 (0.59), 3.499 (0.53), 3.676 (0.43), 3.699 (0.46), 4.051 (0.46),

4.356 (0.68), 5.759 (0.71), 7.480 (0.56), 7.781 (1.42), 8.120 (0.65),

8.620 (0.90).

Example 107.02.01

Compound 108.01

embedded image

6-[6-(cyclopropylamino)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-

1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.88 min; MS (ESIpos): m/z = 472.3 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.810 (0.46), 0.815 (0.52), 0.824

(0.82), 0.862 (0.55), 0.867 (0.53), 0.884 (0.54), 2.518 (0.67), 2.523 (0.49),

3.161 (1.84), 3.563 (16.00), 5.759 (4.97), 7.580 (0.64), 7.846 (0.63), 8.138

(0.55), 8.727 (0.90).

Example 108.01

Compound 109.01.01

embedded image

6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-N-[4-

(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1 min; MS (ESIneg): m/z = 484 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.335 (1.61), 0.348 (1.70),

0.360 (0.55), 0.473 (0.48), 0.482 (1.34), 0.486 (1.27), 0.492 (0.74),

0.502 (1.43), 0.506 (1.30), 0.517 (0.41), 1.063 (0.52), 1.181 (0.54),

2.518 (2.63), 2.523 (1.75), 3.162 (16.00), 3.333 (0.42), 3.390 (1.01),

3.425 (1.36), 3.442 (1.83), 3.457 (1.17), 3.564 (2.07), 5.760 (0.95),

7.545 (1.04), 7.750 (0.52), 7.771 (0.79), 7.830 (1.13), 7.851 (0.68),

8.125 (1.12), 8.522 (0.60), 8.533 (0.58), 8.663 (1.59).

Example 109.01.01

Compound 109.02.01

embedded image

6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-N-{4-

[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-

amine hydrochloride

LC-MS (Method 2): R_t= 1.04 min; MS (ESIneg): m/z = 498 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.328 (0.57), 0.339 (2.29),

0.342 (2.02), 0.351 (2.35), 0.364 (0.76), 0.473 (0.70), 0.483 (1.89),

0.487 (1.79), 0.493 (1.03), 0.503 (2.00), 0.507 (1.83), 0.519 (0.57),

1.163 (0.47), 1.171 (0.47), 1.183 (0.77), 1.195 (0.44), 1.201 (0.46),

1.685 (1.53), 2.518 (1.34), 2.523 (0.91), 3.160 (1.83), 3.275 (0.59),

3.371 (0.45), 3.381 (0.48), 3.393 (0.54), 3.433 (2.11), 3.450 (3.23),

3.466 (2.58), 3.493 (16.00), 3.660 (0.44), 3.674 (0.54), 3.696 (0.47),

3.699 (0.46), 3.711 (0.42), 5.759 (4.42), 7.596 (1.69), 7.690 (0.46),

7.755 (0.99), 7.759 (0.99), 7.776 (1.34), 7.780 (1.42), 7.857 (2.01),

7.878 (1.32), 8.138 (2.08), 8.572 (1.08), 8.585 (1.03), 8.683 (3.69),

9.378 (0.41).

Example 109.02.01

Compound 110.01

embedded image

6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.13 min; MS (ESIpos): m/z = 500 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.366 (0.55), 0.377 (2.08),

0.390 (2.18), 0.403 (0.64), 0.523 (0.68), 0.533 (1.82), 0.537 (1.69),

0.543 (1.00), 0.553 (1.87), 0.557 (1.66), 0.568 (0.51), 1.061 (1.17),

1.188 (0.45), 1.195 (0.45), 1.207 (0.70), 1.220 (0.46), 1.225 (0.55),

2.518 (0.84), 2.523 (0.57), 3.371 (16.00), 3.391 (1.21), 3.454 (2.62),

3.476 (5.88), 3.738 (1.99), 3.755 (1.89), 4.453 (0.61), 7.592 (1.84),

7.626 (0.65), 7.757 (0.97), 7.761 (0.92), 7.778 (1.40), 7.781 (1.41),

7.842 (2.03), 7.863 (1.21), 8.144 (2.00), 8.541 (1.30), 8.555 (1.18),

8.666 (3.68), 9.989 (0.51).

Example 110.01

Compound 111.01

embedded image

6-[6-(azetidin-1-yl)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.02 min; MS (ESIneg): m/z = 484 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.656 (1.06), 2.438 (0.75),

2.458 (1.17), 2.518 (3.50), 2.522 (2.23), 3.161 (1.87), 3.221 (0.47),

3.372 (0.63), 3.382 (0.77), 3.406 (16.00), 3.425 (1.16), 3.443 (0.98),

3.456 (0.92), 3.468 (0.83), 3.487 (3.34), 3.497 (0.69), 3.508 (0.44),

3.661 (0.42), 3.673 (0.51), 3.675 (0.50), 3.687 (0.47), 3.699 (0.61),

3.707 (0.49), 3.712 (0.49), 3.728 (0.70), 3.745 (1.06), 3.762 (0.58),

4.069 (0.46), 4.478 (0.94), 5.759 (3.23), 7.559 (1.28), 7.755 (0.72),

7.776 (1.25), 7.822 (1.69), 7.843 (1.02), 8.138 (1.68), 8.546 (0.74),

8.557 (0.83), 8.595 (3.18).

Example 111.01

Compound 112.01

embedded image

6-[5-methoxy-6-(pyrrolidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.11 min; MS (ESIneg): m/z = 498 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.655 (0.82), 1.985 (2.43),

2.083 (0.55), 2.518 (2.47), 2.522 (1.57), 3.162 (2.12), 3.368 (16.00),

3.383 (0.81), 3.387 (0.68), 3.394 (0.79), 3.426 (0.73), 3.456 (0.68),

3.466 (0.62), 3.468 (0.62), 3.485 (0.55), 3.487 (0.51), 3.497 (0.44),

3.549 (0.60), 3.577 (0.73), 3.728 (0.40), 3.869 (1.35), 4.032 (0.53),

7.563 (1.12), 7.734 (0.73), 7.738 (0.75), 7.759 (1.10), 7.836 (1.50),

7.856 (1.01), 8.116 (1.48), 8.547 (0.66), 8.561 (0.66), 8.669 (3.04).

Example 112.01

Compound 113.01

embedded image

6-[6-(3,3-difluoroazetidin-1-yl)-5-methoxypyrimidin-4-yl]-N-{4-[(1R

or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.11 min; MS (ESIpos): m/z = 522 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.683 (1.29), 2.518 (2.27),

2.523 (1.60), 3.162 (5.87), 3.281 (0.49), 3.383 (0.52), 3.394 (0.54),

3.466 (16.00), 3.485 (1.09), 3.497 (0.88), 3.507 (0.62), 3.661 (0.41),

3.676 (0.45), 3.697 (0.44), 3.712 (0.41), 4.727 (1.80), 4.758 (3.32),

4.789 (1.71), 5.759 (1.51), 7.568 (1.56), 7.660 (0.40), 7.792 (1.56),

7.813 (1.89), 7.951 (1.15), 7.973 (0.86), 8.313 (1.81), 8.563 (1.15),

8.578 (4.16).

Example 113.01

Compound 114.01

embedded image

6-[6-(cyclobutylamino)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.27 min; MS (ESIpos): m/z = 499.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.986 (0.99), 1.003 (1.08),

1.665 (1.31), 1.709 (0.55), 1.730 (0.82), 1.742 (0.78), 1.754 (1.34),

1.771 (1.05), 1.792 (0.52), 2.263 (0.67), 2.284 (2.22), 2.301 (2.80),

2.322 (1.76), 2.327 (0.90), 2.332 (0.58), 2.518 (1.93), 2.523 (1.39),

2.665 (0.44), 2.669 (0.59), 3.245 (0.54), 3.383 (0.82), 3.394 (0.86),

3.425 (1.12), 3.443 (1.07), 3.456 (1.14), 3.476 (16.00), 3.497 (0.81),

3.549 (0.55), 4.691 (0.63), 4.712 (0.96), 4.732 (0.92), 4.752 (0.55),

5.760 (3.97), 7.576 (1.31), 7.736 (0.77), 7.759 (1.05), 7.841 (1.66),

7.862 (1.13), 8.112 (1.60), 8.561 (0.79), 8.573 (0.73), 8.666 (2.39).

Example 114.01

Compound 115.01

embedded image

6-[6-(azetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-

yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.97 min; MS (ESIpos): m/z = 456 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.144 (0.69), 1.231 (0.55),

1.617 (2.27), 2.432 (1.51), 2.451 (3.64), 2.472 (6.94), 2.518 (16.00),

2.523 (10.92), 3.163 (2.68), 3.384 (2.68), 3.457 (1.79), 3.469 (1.65),

3.486 (1.58), 3.499 (1.30), 3.662 (0.96), 3.676 (1.03), 3.699 (1.03),

3.713 (1.03), 4.348 (7.90), 5.760 (0.55), 6.997 (13.80), 7.514 (4.12),

7.782 (3.91), 7.803 (5.08), 7.919 (3.78), 7.942 (2.88), 8.194 (5.70),

8.522 (2.40), 8.740 (13.80), 9.538 (0.62), 12.763 (0.41).

Example 115.01

Compound 116.01

embedded image

6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 0.99 min; MS (ESIpos): m/z = 491.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.819 (0.45), 0.986 (15.51), 1.002

(16.00), 1.009 (2.16), 1.011 (1.38), 1.021 (0.82), 1.025 (1.91), 1.037 (0.70),

1.087 (1.56), 1.104 (1.58), 1.128 (1.44), 1.145 (1.56), 1.172 (0.47), 1.194

(2.37), 1.210 (2.43), 1.227 (0.86), 1.257 (5.86), 1.273 (5.96), 1.279 (3.80),

1.293 (5.88), 1.310 (5.39), 1.693 (5.26), 1.707 (5.27), 1.740 (3.91), 1.749

(2.02), 1.777 (3.41), 1.976 (1.71), 2.131 (0.86), 2.518 (3.85), 2.523 (2.39),

2.669 (1.03), 2.673 (0.70), 3.096 (0.84), 3.107 (0.86), 3.114 (0.88), 3.125

(0.88), 3.133 (0.43), 3.143 (0.43), 3.160 (0.90), 3.218 (0.88), 3.276 (2.02),

3.288 (2.10), 3.371 (1.27), 3.403 (1.46), 3.449 (2.90), 3.455 (3.46), 3.465

(3.60), 3.467 (3.64), 3.483 (3.62), 3.485 (3.54), 3.495 (2.96), 3.507 (1.97),

3.578 (1.05), 3.585 (1.17), 3.594 (1.25), 3.601 (0.97), 3.609 (1.48), 3.625

(1.64), 3.641 (1.30), 3.649 (0.66), 3.660 (1.13), 3.664 (0.88), 3.672 (1.15),

3.674 (1.23), 3.696 (1.13), 3.698 (1.05), 3.706 (0.78), 3.710 (0.95), 3.715

(0.53), 3.722 (0.51), 3.726 (0.53), 4.105 (0.62), 4.247 (0.72), 4.283 (0.41),

4.466 (0.78), 4.496 (1.44), 4.525 (0.78), 4.738 (5.45), 4.768 (10.18), 4.798

(5.08), 7.211 (10.02), 7.591 (5.45), 7.691 (1.77), 7.813 (4.98), 7.834 (5.53),

8.059 (3.87), 8.064 (3.91), 8.081 (3.17), 8.085 (3.27), 8.343 (5.88), 8.565

(3.74), 8.578 (3.52), 8.822 (9.89), 9.879 (1.38).

Example 116.01

Compound 117.01

embedded image

N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(pyrrolidin-

1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1 min; MS (ESIpos): m/z = 469.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.987 (1.48), 1.003 (1.56),

1.179 (0.44), 1.229 (1.56), 1.258 (4.41), 1.274 (4.44), 1.665 (4.15),

1.985 (3.00), 2.002 (5.41), 2.017 (4.96), 2.033 (2.67), 2.043 (2.56),

2.057 (4.56), 2.074 (5.00), 2.090 (2.81), 2.518 (7.93), 2.523 (5.52),

3.235 (1.59), 3.440 (3.11), 3.456 (3.48), 3.469 (3.26), 3.485 (2.81),

3.497 (2.44), 3.597 (0.78), 3.650 (0.85), 3.661 (1.41), 3.666 (1.22),

3.676 (2.22), 3.687 (4.07), 3.704 (7.67), 3.719 (8.19), 3.735 (7.89),

3.752 (4.04), 4.636 (0.56), 5.760 (0.59), 7.134 (13.59), 7.334 (0.70),

7.568 (5.44), 7.636 (1.15), 7.694 (0.74), 7.733 (0.93), 7.824 (4.96),

7.845 (6.15), 7.963 (4.89), 7.967 (4.89), 7.985 (3.59), 7.988 (3.67),

8.222 (7.59), 8.415 (0.48), 8.546 (3.30), 8.558 (3.07), 8.810 (16.00),

9.754 (0.93).

Example 117.01

Compound 118.01

embedded image

6-[6-(morpholin-4-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin--

yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.92 min; MS (ESIpos): m/z = 485.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.829 (0.64), 0.850 (0.64),

0.856 (0.85), 0.987 (4.69), 1.004 (4.65), 1.064 (0.81), 1.179 (0.43),

1.230 (2.01), 1.655 (3.58), 2.518 (8.53), 2.523 (6.06), 3.046 (1.24),

3.058 (2.13), 3.069 (2.86), 3.081 (2.22), 3.093 (1.37), 3.221 (1.54),

3.418 (2.94), 3.441 (2.90), 3.457 (3.33), 3.469 (3.37), 3.485 (2.94),

3.498 (2.52), 3.509 (1.62), 3.627 (0.94), 3.650 (1.07), 3.661 (1.62),

3.666 (1.37), 3.676 (1.83), 3.698 (1.92), 3.708 (1.54), 3.712 (1.83),

3.744 (10.28), 3.755 (16.00), 3.764 (14.38), 3.789 (3.71), 3.946 (11.78),

4.182 (0.47), 4.203 (0.55), 4.628 (0.60), 7.483 (11.48), 7.552 (5.03),

7.575 (1.28), 7.749 (0.55), 7.798 (5.12), 7.819 (5.76), 7.990 (4.22),

8.009 (3.46), 8.258 (6.66), 8.536 (2.94), 8.817 (13.01), 9.257 (0.60),

9.709 (0.85), 12.904 (0.47).

Example 118.01

Compound 119.01

embedded image

N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(2,2,2-

trifluoroethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.15 min; MS (ESIpos): m/z = 498.5 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.986 (3.23), 1.002 (3.40), 1.061

(0.96), 1.223 (0.69), 1.704 (10.04), 1.720 (10.30), 2.081 (3.64), 2.518 (5.49),

2.523 (3.78), 3.160 (1.08), 3.301 (3.57), 3.383 (2.25), 3.391 (1.72), 3.443

(3.69), 3.455 (4.96), 3.467 (5.58), 3.483 (5.60), 3.495 (4.93), 3.507 (3.57),

3.594 (1.15), 3.601 (1.01), 3.611 (0.96), 3.625 (0.84), 3.643 (0.91), 3.648

(0.91), 3.655 (0.91), 3.659 (1.58), 3.663 (1.25), 3.671 (1.60), 3.673 (1.68),

3.695 (1.58), 3.698 (1.56), 3.706 (1.10), 3.710 (1.44), 3.714 (0.81), 3.721

(0.69), 3.725 (0.79), 3.737 (0.53), 3.830 (0.55), 3.838 (0.48), 3.854 (1.17),

3.879 (1.15), 3.903 (0.55), 3.911 (0.46), 3.931 (0.74), 3.949 (0.89), 3.969

(0.60), 3.994 (11.71), 4.169 (0.43), 4.181 (0.50), 4.728 (1.15), 5.137 (3.54),

5.159 (10.35), 5.182 (9.70), 5.204 (3.14), 5.759 (0.81), 6.193 (0.46), 6.199

(0.46), 6.209 (0.48), 6.215 (0.46), 6.351 (0.57), 6.889 (0.77), 7.493 (2.83),

7.496 (2.78), 7.597 (7.78), 7.700 (2.99), 7.710 (2.99), 7.731 (13.05), 7.733

(13.25), 7.745 (1.41), 7.750 (0.91), 7.768 (7.28), 7.788 (7.50), 7.836 (0.55),

7.840 (0.81), 7.845 (0.48), 7.912 (0.57), 8.063 (0.41), 8.115 (0.72), 8.170

(1.20), 8.174 (1.20), 8.192 (1.03), 8.196 (1.08), 8.222 (5.46), 8.226 (5.39),

8.243 (4.84), 8.248 (4.89), 8.332 (0.86), 8.379 (0.55), 8.498 (1.87), 8.501

(1.84), 8.548 (8.62), 8.552 (8.55), 8.579 (6.11), 8.593 (5.56), 8.890 (3.26),

8.893 (3.23), 8.954 (15.95), 8.957 (16.00), 9.059 (0.86), 9.074 (0.81), 9.274

(0.74), 9.877 (2.63).

Example 119.01

Compound 120.01
4-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

4-Bromobenzene-1,2-diamine (388 mg), 1-(cyclopropylmethyl)-3,5-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.05 g, 60% purity) and tetrakis(triphenylphosphine)palladium(0) (120 mg) were added to K₂CO₃(3.1 ml, 2.0 M) and 1-propanol (39 ml). The mixture was stirred under inert atmosphere for 2 h at 120° C. The mixture was then filtered (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 110 mg of the title compound.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.29-0.35 (m, 2H), 0.45-0.51 (m, 2H), 1.17 (br t, 1H), 2.06 (s, 3H), 2.16 (s, 3H), 3.83 (d, 2H), 4.41 (br d, 4H), 6.25 (dd, 1H), 6.41 (d, 1H), 6.52 (d, 1H).

Compound 120.02
tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-4-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]phenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Imidazole (5.84 mg, 85.8 μmol) and TCDI (91.8 mg) were solubilised in dichloromethane (5.6 ml) under argon. The solution was cooled to 0° C. and tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (131 mg) was added. The mixture was allowed to warm up to rt overnight. 4-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]benzene-1,2-diamine (110 mg) was added and the mixture was stirred for 4 h at rt. The reaction mixture was diluted with water and extracted three times with DCM. The combined organic phases were dried (silicone filter) and concentrated under reduced pressure. The crude material was used without further purification.

Compound 120.03
6-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (55.0 mg; see Example 120.01) was dissolved in a mixture of dichloromethane (950 μl) and methanol (480 μl), HCl in dioxane (240 μl, 4.0 M) was added and the mixture stirred for overnight at rt. The mixture was concentrated under reduced pressure and the crude residue (56 mg) was used without further purification.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=471 [M+H]⁺.

Compound 121.01
4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-3-fluorobenzene-1,2-diamine

embedded image

4-Bromo-3-fluorobenzene-1,2-diamine (500 mg), 1-(cyclopropylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (666 mg), triphenyl phosphine (32.0 mg) and bis(triphenylphosphine)palladium(II) dichloride (85.6 mg) were added to aqueous K₂CO₃(3.7 ml, 2.0 M) and 1-propanol (10 ml). The mixture was stirred under argon for 2 h at 120° C. The reaction mixture was diluted with DCM and water. The aqueous phase was extracted three times with DCM. The organic phase was washed sequentially with water and brine. The organic phase was then dried (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 445 mg of the title compound.

LC-MS (Method 2): R_t=0.84 min; MS (ESIpos): m/z=247 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33-0.40 (m, 2H), 0.46-0.55 (m, 2H), 1.17-1.29 (m, 1H), 3.96 (d, 2H), 4.42 (s, 2H), 4.76 (s, 2H), 6.35 (dd, 1H), 6.65 (t, 1H), 7.65 (s, 1H), 7.91 (d, 1H).

Compound 121.02
tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-3-fluorophenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Imidazole (24.6 mg) and TCDI (386 mg) were solubilised in dichloromethane (15 ml) under argon. The solution was cooled to 0° C. and tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (554 mg; see Compound 36.05) was added. The mixture was allowed to warm up to rt overnight. 4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-3-fluorobenzene-1,2-diamine (445 mg) was added and the mixture was stirred for 4 h at rt. The mixture was diluted with water and extracted three times with DCM. The combined organic phases were dried (silicone filter) and concentrated under reduced pressure. The crude title compound (1.3 g) was used without further purification.

LC-MS (Method 2): R_t=1.39 min; MS (ESIpos): m/z=595 [M+H]⁺.

Compound 121.03
6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

tert-Butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (708 mg; see Example 121.02) was solubilised in dichloromethane (7.2 ml) and HCl in dioxane (1.8 ml, 4.0 M) was added. The mixture was stirred overnight at rt. The mixture was concentrated under reduced pressure and the crude residue (730 mg) was used without further purification.

LC-MS (method 2): R_t=1.05 min; MS (ESIpos): m/z=461 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.388 (0.72), 0.399 (2.74), 0.403 (2.39), 0.411 (2.69), 0.414 (2.57), 0.424 (0.94), 0.526 (0.98), 0.536 (2.32), 0.541 (2.17), 0.546 (1.29), 0.556 (2.44), 0.560 (2.00), 0.572 (0.69), 1.269 (0.64), 1.277 (0.61), 1.289 (1.00), 1.296 (0.46), 1.301 (0.56), 1.308 (0.57), 1.686 (2.56), 1.701 (2.34), 2.518 (1.28), 2.522 (0.81), 3.160 (16.00), 3.331 (0.55), 3.467 (1.48), 4.031 (4.29), 4.049 (4.19), 4.655 (0.48), 7.476 (1.62), 7.498 (2.05), 7.565 (2.05), 7.592 (1.38), 7.608 (1.61), 7.612 (1.43), 7.629 (1.59), 7.922 (3.44), 8.238 (2.69), 8.241 (2.54), 8.524 (1.15), 8.536 (1.07), 9.831 (0.68).

Compound 122.01
3-chloro-4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine

embedded image

4-Bromo-3-chlorobenzene-1,2-diamine (500 mg), 1-(cyclopropylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (616 mg), triphenylphosphine (29.6 mg) and bis(triphenylphosphine)palladium(II) dichloride (79.2 mg) were added to aqueous K₂CO₃(3.4 ml, 2.0 M) and 1-propanol (10 ml). The mixture was stirred under argon for 2 h at 1209′. The reaction mixture was then diluted with DCM and water and the aqueous phase was extracted three times with DCM. The organic phase was sequentially washed with water and brine, dried (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 441 mg of the title compound.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=263 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.35-0.39 (m, 2H), 0.50-0.55 (m, 1H), 1.20-1.29 (m, 1H), 3.96 (d, 2H), 4.71 (s, 2H), 4.81 (s, 2H), 6.48-6.52 (m, 1H), 6.58 (d, 1H), 7.59 (d, 1H), 7.92 (d, 1H).

Compound 122.02
tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-3-chloro-4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]phenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Imidazole (22.9 mg) and TCDI (359 mg) were solubilised in dichloromethane (15 ml) under argon. The solution was cooled to 0° C. and tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (514 mg) was added. The mixture was allowed to warm up to rt overnight. 3-chloro-4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (441 mg) was added and the mixture was stirred for 4 h at rt. The mixture was diluted with water and extracted three times with DCM. The combined organic phases were dried (silicone filter) and concentrated under reduced pressure. The crude mixture (1 g) was used without further purification.

Compound 122.03
7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (534 mg; see Example 122.01) was solubilised in dichloromethane (5.3 ml) and HCl in dioxane (1.3 ml, 4.0 M) was added. The mixture was stirred overnight at rt and then concentrated under reduced pressure.

The crude mixture was used without further purification.

LC-MS (method 2): R_t=1.08 min; MS (ESIpos): m/z=477 [M+H]⁺.

Compound 123.01
4-(1-methyl-1H-pyrazol-5-yl)benzene-1,2-diamine

embedded image

4-Bromobenzene-1,2-diamine (300 mg), 1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (667 mg) and the bis(triphenylphosphine)palladium(II) dichloride (113 mg) were solubilised in 1,2-dimethoxyethane (10 ml) and aqueous K₂CO₃(1.8 ml, 2.0 M) was added. The reaction was stirred for 10 min under microwave radiation at 130° C. The reaction mixture was filtered (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 125 mg (99% purity) of the title compound.

LC-MS (Method 2): R_t=0.60 min; MS (ESIpos): m/z=189 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=3.77 (s, 3H), 4.60 (s, 2H), 4.72 (s, 2H), 6.13 (d, 1H), 6.50-6.53 (m, 1H), 6.57 (d, 1H), 6.63 (d, 1H), 7.35 (d, 1H).

Compound 123.02
tert-butyl 4-{(1R or 1S)-1-[2-({[2-amino-4-(1-methyl-1H-pyrazol-5-yl)phenyl]carbamothioyl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Imidazole (9.04 mg) and TCDI (142 mg) were solubilised in dichloromethane (2.0 ml) under argon. The solution was cooled to 0° C. and tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (203 mg; see Compound 36.05) was added. The mixture was allowed to warm up to rt overnight. 4-(1-methyl-1H-pyrazol-5-yl)benzene-1,2-diamine (125 mg) was added and the mixture was stirred for 4 h at rt. The mixture was diluted with water and extracted three with DCM. The combined organic phases were dried (silicone filter) and concentrated under reduced pressure. The crude title compound was used without further purification.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=537 [M+H]⁺.

Compound 123.03
6-(1-methyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

embedded image

tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-methyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (191 mg; see Example 123.01) was solubilised in dichloromethane (2.2 ml) and HCl in dioxane (550 μl, 4.0 M) was added. The mixture was stirred overnight at rt. The mixture was concentrated under reduced pressure and used without further purification.

LC-MS (method 2): R_t=0.90 min; MS (ESIpos): m/z=403 [M+H]⁺.

Compound 124.01
(rac)-4-{1-[tetrahydro-2H-pyran-2-yl]-1H-pyrazol-5-yl}benzene-1,2-diamine

embedded image

4-Bromobenzene-1,2-diamine (300 mg), (rac)-1-[tetrahydro-2H-pyran-2-yl]-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (892 mg) and the bis(triphenylphosphine)palladium(II) dichloride (113 mg) were solubilised in 1,2-dimethoxyethane (3.0 ml) and aqueous K₂CO₃(1.8 ml, 2.0 M) was added. The reaction was stirred for 10 min under microwave radiation at 130° C. The reaction mixture was filtered (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 139 mg (90% purity) of the title compound.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.46-1.62 (m, 3H), 1.66-1.75 (m, 1H), 1.89-1.97 (m, 1H), 2.30-2.42 (m, 1H), 3.47-3.57 (m, 1H), 3.93-4.06 (m, 1H), 4.62 (s, 2H), 4.75 (s, 2H), 5.18 (dd, 1H), 6.16 (d, 1H), 6.50-6.60 (m, 2H), 6.64 (d, 1H), 7.44 (d, 1H).

Compound 124.02
(rac)-tert-butyl 4-[(2-{[(2-amino-5-{1-[tetrahydro-2H-pyran-2-yl]-1H-pyrazol-5-yl}phenyl)carbamothioyl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Imidazole (6.85 mg) was added to TCDI (108 mg) and solubilized in dichloromethane (4.0 ml) at 0° C. under argon. tert-Butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (147 mg; see Compound 01.02) (solubilized in 4 ml DCM) was added and the reaction was stirred at rt overnight. (rac)-4-{1-[tetrahydro-2H-pyran-2-yl]-1H-pyrazol-5-yl}benzene-1,2-diamine (130 mg, 503 μmol) (in 2 ml DCM) was then added to the mixture and the reaction was stirred for 4 h at rt. The reaction mixture was diluted with water and extracted three times with DCM. The organic layer was filtered (silicone filter) and concentrated under reduced pressure. The crude material was used without further purification.

LC-MS (Method 2): R_t=1.30 min; MS (ESIneg): m/z=591 [M−H]⁻

Compound 124.03
(rac)-tert-butyl 4-({2-[(6-{1-[tetrahydro-2H-pyran-2-yl]-1H-pyrazol-5-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

N,N′-dipropan-2-ylcarbodiimide (1.0 ml) was added to (rac)-tert-butyl 4-[(2-{[(2-amino-5-{1-[tetrahydro-2H-pyran-2-yl]-1H-pyrazol-5-yl}phenyl)carbamothioyl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (100 mg) in dichloromethane (4 ml) under argon and the reaction was stirred overnight at rt. The mixture was diluted with sat. NaHCO₃and extracted three times with DCM. The organic phase was dried (MgSO₄), filtered and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 34.7 mg (84% purity) of the title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIneg): m/z=557 [M−H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.989 (0.59), 1.005 (0.60), 1.389 (11.36), 1.395 (16.00), 1.412 (0.85), 2.322 (1.17), 2.326 (1.29), 2.331 (1.28), 2.336 (1.14), 2.347 (1.47), 2.359 (1.41), 2.372 (0.99), 2.518 (2.33), 2.522 (1.54), 2.668 (0.71), 3.501 (2.08), 7.541 (0.79), 8.263 (0.83), 8.276 (0.79).

Compound 124.04
N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(1H-pyrazol-5-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

(rac)-tert-Butyl 4-({2-[(6-{1-[tetrahydro-2H-pyran-2-yl]-1H-pyrazol-5-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate (33.0 mg; see Compound 124.03) was solubilised in a mixture of dichloromethane (950 μl)/methanol (950 μl) and HCl in dioxane (1.4 ml, 4.0 M) was added. The mixture was stirred for 3 h at rt and concentrated under reduced pressure. The crude material was used without further purification.

LC-MS (Method 2): R_t=0.81 min; MS (ESIneg): m/z=373 [M−H]⁻

Compound 125.01
(2-amino-5-bromopyridin-4-yl)methanol

embedded image

Methyl 2-amino-5-bromopyridine-4-carboxylate (500 mg) was solubilised in THF (10 ml, 120 mmol) and the mixture was cooled to 0° C. DIBAL in hexane (9.7 ml, 1.0 M) was added dropwise. The mixture stirred overnight at rt. The reaction mixture was diluted carefully with 2-propanol and water. The mixture stirred 24 h at rt, the precipitate was filtered, stirred twice in EtOAc and filtered each time. The filtrate was concentrated under reduced pressure and dried under reduced pressure. The crude product was used without further purification.

LC-MS (Method 2): R_t=0.57 min; MS (ESIpos): m/z=203 [M+H]⁺.

Compound 125.02
5-bromo-4-(bromomethyl)pyridin-2-amine hydrobromide (1:1)

embedded image

(2-Amino-5-bromopyridin-4-yl)methanol (436 mg) was stirred in aqueous HBr (5.0 ml, 48% purity) 72 h at 120° C. The reaction mixture was then concentrated under reduced pressure and used without further purification.

Compound 125.03
tert-butyl 4-[(2-amino-5-bromopyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

5-Bromo-4-(bromomethyl)pyridin-2-amine hydrobromide (1:1) (630 mg, 80% purity), tert-butyl piperazine-1-carboxylate (460 mg) and K₂CO₃(1.00 g) were solubilised in DMF (10 ml). The mixture was stirred overnight at 50° C. The reaction mixture was diluted with EtOAc and washed with half conc. NaCl solution. The organic layer was dried (MgSO₄) filtered and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 80.0 mg of the title compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=371 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.40 (s, 9H), 2.38 (t, 4H), 3.31-3.36 (m, 4H), 3.38 (s, 2H), 6.10 (s, 2H), 6.62 (s, 1H), 7.93 (s, 1H).

Compound 125.04
tert-butyl 4-{[2-({[2-amino-4-(3-methyl-1,2,4-oxadiazol-5-yl)phenyl]carbamothioyl}amino)-5-bromopyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Imidazole (5.13 mg) and TCDI (80.6 mg) were solubilised in dry dichloromethane (2.5 ml) under argon. The solution was cooled to 0° C. and tert-butyl 4-[(2-amino-5-bromopyridin-4-yl)methyl]piperazine-1-carboxylate (140 mg), solubilised in dry dichloromethane (2.5 ml), was added. The mixture was stirred at rt overnight. 4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine (71.7 mg; see Compound 16.20) was then added to the mixture and it was stirred overnight at rt. The reaction mixture was diluted with water and extracted three times with DCM. The organic phase was dried (silicone filter) and concentrated under reduced pressure.

The crude was used without further purification

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=603 [M+H]⁺.

Compound 125.05
N-[5-bromo-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride

embedded image

Tert-Butyl 4-[(5-bromo-2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (90.0 mg; see Example 125.01) was solubilised in dichloromethane (1.6 ml) and HCl in dioxane (160 μl, 4.0 M) was added. The mixture was stirred at rt overnight. The reaction was concentrated under reduced pressure and the crude residue (90 mg) was used without further purification.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=469 [M+H]⁺.

Compound 126.01
tert-butyl 4-[(2-{[6-(hydrazinylcarbonyl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

2-[(4-{[4-(tert-Butoxycarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazole-6-carboxylic acid (500 mg, 50% purity; see compound 16.05), hydrazine in THF (2.2 ml, 1.0 M), K₂CO₃(382 mg) and HATU (630 mg) were dissolved in DMF. The mixture stirred overnight at rt. Hydrazine in THF (2.2 ml, 1.0 M) and HATU (630 mg) were added again and the mixture stirred overnight at rt. The reaction mixture was diluted with water and stirred 24 h at rt. The precipitate was filtered, washed with water and dried overnight at 60° C. The product was used without further purification.

LC-MS (Method 2): R_t=0.97 min; MS (ESIpos): m/z=467 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.39 (s, 9H), 2.36 (br d, 4H), 3.35 (br s, 4H), 3.50 (s, 2H), 4.42 (br s, 2H), 6.93 (br d, 1H), 7.17 (br s, 1H), 7.28-7.51 (m, 1H), 7.52-7.59 (m, 1H), 7.82-8.02 (m, 1H), 8.26 (d, 1H), 9.52-9.63 (m, 1H), 10.67-10.79 (m, 1H), 12.19-12.35 (m, 1H).

Compound 126.02
tert-butyl 4-({2-[(6-{[2-(cyclobutylacetyl)hydrazinyl]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

tert-Butyl 4-[(2-{[6-(hydrazinylcarbonyl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (75.0 mg), cyclobutylacetic acid (55.0 mg), K₂CO₃(133 mg) and HATU (183 mg) were dissolved in DMF (3.8 ml). The mixture stirred overnight at rt. Water was added and the mixture stirred for 1 h at rt and then filtered. The crude mixture was purified without work up by preparative HPLC to give 7 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=563 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.40 (s, 9H), 1.69-1.87 (m, 4H), 2.01-2.11 (m, 2H), 2.30 (d, 2H), 2.36 (br t, 4H), 2.59-2.66 (m, 1H), 3.35 (br s, 4H), 3.50 (s, 2H), 6.94 (br s, 1H), 7.17 (br d, 1H), 7.31-7.55 (m, 1H), 7.61 (br dd, 1H), 7.89-8.03 (m, 1H), 8.27 (d, 1H), 9.72 (s, 1H), 10.08 (br d, 1H), 10.74 (br s, 1H), 12.29 (br s, 1H).

Compound 126.03
6-[5-(cyclobutylmethyl)-1,3,4-oxadiazol-2-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

embedded image

tert-Butyl 4-({2-[(6-{[2-(cyclobutylacetyl)hydrazinyl]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate (7.00 mg, 80% purity) was dissolved in SOCl₂(110 μl) and the mixture stirred overnight at 50° C. The reaction mixture was concentrated under reduced pressure and the crude title compound (6 mg) was used without further purification.

Compound 127.01
6-chloro-N-(cyclopropylmethyl)-N-methylpyrimidin-4-amine

embedded image

4,6-Dichloropyrimidine (300 mg), 1-cyclopropyl-N-methylmethanamine hydrochloride (1:1) (257 mg) and K₂CO₃(306 mg) were stirred in dioxane 1,4-dioxane (4.0 ml) overnight at 110° C. The mixture diluted in water and EtOAc. The aqueous phase was extracted two times with EtOAc. The organic phase was then dried (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 158 mg (95% purity) of the title compound.

LC-MS (method 2): R_t=1.08 min; MS (ESIpos): m/z=199 [M+H]⁺. ¹H NMR (400 MHz, DMSO-d6) b ppm 0.23-0.33 (m, 2H) 0.39-0.49 (m, 2H) 0.98-1.08 (m, 1H) 3.07 (br s, 3H) 3.35-3.59 (m, 2H) 6.76 (br s, 1H) 8.30 (s, 1H)

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.259 (2.95), 0.270 (11.68), 0.273 (10.68), 0.282 (12.22), 0.285 (11.46), 0.295 (4.07), 0.320 (0.41), 0.427 (2.85), 0.438 (7.41), 0.441 (7.66), 0.447 (4.61), 0.457 (8.07), 0.472 (2.34), 0.978 (0.51), 0.991 (1.05), 0.995 (1.34), 1.002 (0.83), 1.007 (2.68), 1.010 (2.49), 1.015 (2.49), 1.019 (1.88), 1.027 (4.44), 1.035 (1.85), 1.040 (2.34), 1.045 (2.44), 1.047 (2.34), 1.052 (0.78), 1.057 (1.15), 1.059 (1.15), 1.064 (0.95), 1.077 (0.41), 2.518 (5.37), 2.523 (3.80), 3.069 (10.66), 3.469 (2.27), 6.761 (1.29), 8.300 (16.00).

Compound 128.01
6-bromo-N-(cyclopropylmethyl)pyrimidin-4-amine

embedded image

4,6-dibromopyrimidine (300 mg) and 1-cyclopropylmethanamine (130 μl) were stirred in dioxane 1,4-dioxane (6.0 ml) for 2 h at 110° C. The mixture was then concentrated under reduced pressure. The crude was solubilised in DCM and water was added. The aqueous phase was extracted two times with EtOAc. The organic phase was dried (silicone filter) and concentrated under reduced pressure. The crude was used without further purification.

LC-MS (Method 2): R_t=0.99 min; MS (ESIpos): m/z=228 [M+H]⁺.

Compound 129.01
6-bromo-N,N-dimethylpyrimidin-4-amine

embedded image

4,6-Dibromopyrimidine (300 mg) and N-methylmethanamine in THF (760 μl, 2.0 M) were stirred in dioxane 1,4-dioxane (6.0 ml) overnight at 110° C. The mixture was then concentrated under reduced pressure and the crude mixture was purified by flash chromatography on silica gel to give 116 mg of the title compound.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=3.00-3.14 (m, 6H), 6.86-6.93 (m, 1H), 8.21-8.28 (m, 1H).

The following compounds shown in table 3, below, were prepared according to the general procedure:

The corresponding Boc protected amine (see Examples 130.01. to 162.01., tables 14 and 15, or as specified below for the respective Compound) (1 eq.) was solubilized in a mixture of DCM and MeOH (generally 2:1) and 4N HCl in dioxane (5 eq.) was added slowly. The reaction was stirred between 2 and 48 hours at rt and then concentrated. The crude mixture was used without further purification.

TABLE 3

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Compound

¹H-NMR

Compound 130.01

embedded image

6-(3-chloro-2-methylpyridin-4-yl)-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 434 [M + H]⁺

Compound 131.01

embedded image

6-(5-fluoro-2-methylpyridin-4-yl)-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.97 min; MS (ESIpos): m/z = 418 [M + H]⁺

Compound 132.01

embedded image

6-(3-chloro-5-fluoropyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-

2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 438 [M + H]⁺

Compound 133.01

embedded image

4-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-

6-yl)pyridine-3-carbonitrile hydrochloride

LC-MS (Method 2): R_t= 0.88 min; MS (ESIpos): m/z = 411 [M + H]⁺

Compound 134.01

embedded image

6-[2-(morpholin-4-yl)pyridin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.98 min; MS (ESIpos): m/z = 471 [M + H]⁺

Compound 135.01

embedded image

6-[2-(dimethylamino)pyridin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.01 min; MS (ESIneg): m/z = 427 [M − H]⁻

Compound 136.01

embedded image

6-methyl-4-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-

benzimidazol-6-yl)pyridine-2-carbonitrile hydrochloride

LC-MS (Method 2): R_t= 1 min; MS (ESIpos): m/z = 425 [M + H]⁺

Compound 137.01

embedded image

6-(2-fluoropyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-

benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.97 min; MS (ESIpos): m/z = 404 [M + H]⁺

Compound 138.01

embedded image

6-(2-aminopyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-

benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.81 min; MS (ESIneg): m/z = 399 [M − H]⁻

Compound 139.01

embedded image

6-[2-(difluoromethyl)pyridin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.98 min; MS (ESIpos): m/z = 436 [M + H]⁺

Compound 140.01

embedded image

6-(5-chloropyrazin-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-

benzimidazol-2-amine hydrochloride (starting from example 140.01)

LC-MS (Method 2): R_t= 1.03 min; MS (ESIpos): m/z = 421 [M + H]⁺

Compound 141.01

embedded image

6-{6-[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-N-[4-

(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 468 [M − H]⁺

Compound 142.01

embedded image

6-{6-[(cyclopropylmethyl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.95 min; MS (ESIpos): m/z = 454 [M − H]⁻

Compound 143.01

embedded image

6-[6-(dimethylamino)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.89 min; MS (ESIpos): m/z = 430 [M + H]⁺

Compound 144.01

embedded image

6-[5-(dimethylamino)pyrazin-2-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.93 min; MS (ESIpos): m/z = 430 [M + H]⁺

Compound 145.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(piperidin-1-

yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.04 min; MS (ESIpos): m/z = 470 [M + H]⁺

Compound 146.01

embedded image

6-{6-[methyl(2,2,2-trifluoroethyl)amino]pyrimidin-4-yl}-N-[4-

(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.06 min; MS (ESIpos): m/z = 498 [M + H]⁺

Compound 147.01

embedded image

6-[6-(azetidin-1-yl)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.9 min; MS (ESIpos): m/z = 442 [M + H]⁺

Compound 148.01

embedded image

6-{6-[ethyl(methyl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.98 min; MS (ESIpos): m/z = 444 [M + H]⁺

Compound 149.01

embedded image

6-[6-(ethylamino)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-

2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.87 min; MS (ESIpos): m/z = 430 [M + H]⁺

Compound 150.01

embedded image

6-[6-(methylamino)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.81 min; MS (ESIpos): m/z = 414 [M + H]⁺

Compound 151.01

embedded image

6-[6-(cyclopropylamino)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.89 min; MS (ESIneg): m/z = 440 [M − H]⁻

Compound 152.01

embedded image

6-[6-(cyclobutylamino)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.98 min; MS (ESIpos): m/z = 456 [M + H]⁺

Compound 153.01

embedded image

6-{6-[methyl(propan-2-yl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.04 min; MS (ESIneg): m/z = 456 [M − H]⁻

Compound 154.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(propan-2-

ylamino)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.94 min; MS (ESIpos): m/z = 444 [M + H]⁺

Compound 155.01

embedded image

6-[6-(diethylamino)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.05 min; MS (ESIpos): m/z = 458 [M + H]⁺

Compound 156.01

embedded image

6-{6-[cyclobutyl(methyl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.11 min; MS (ESIpos): m/z = 470 [M + H]⁺

Compound 157.01

embedded image

6-{6-[cyclopropyl(methyl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.88 min; MS (ESIpos): m/z = 456 [M + H]⁺

Compound 158.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(6-{[1-

(trifluoromethyl)cyclopropyl]methoxy}pyrimidin-4-yl)-1H-

benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.19 min; MS (ESIneg): m/z = 523 [M − H]⁻

Compound 159.01

embedded image

6-[6-(cyclobutylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.23 min; MS (ESIneg): m/z = 469 [M − H]⁻

Compound 160.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(propan-2-

yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.1 min; MS (ESIneg): m/z = 443 [M − H]⁻

Compound 161.01

embedded image

6-(6-ethoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-

1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.02 min; MS (ESIneg): m/z = 429 [M − H]⁻

Compound 162.01

embedded image

6-[6-(dimethylamino)-5-fluoropyrimidin-4-yl]-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1 min; MS (ESIpos): m/z = 448 [M + H]⁺

Compound 163.01

embedded image

6-(6-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-

yl]-1H-benzimidazol-2-amine hydrochloride (starting from example

145.01.01)

LC-MS (Method 2): R_t= 0.93 min; MS (ESIpos): m/z = 417 [M + H]⁺

Compound 169.01
1,1-difluoro-3-(iodomethyl)cyclobutane

embedded image

To a stirred solution of (3,3-difluorocyclobutyl)methanol (3.41 g) in THF (60 ml) was added triphenylphosphine (8.79 g) and imidazole (2.85 g). The mixture was cooled to 0° C. and iodine (8.50 g) was added. The mixture was stirred at r.t. for 16 h. An aqueous solution of disodium sulfurothioate (c=1M; 50 mL) was added and the reaction mixture was stirred for 5 minutes. The phases were separated and the aqueous phase was extracted with diethyl ether. The combined organic phases were washed with aqueous ammonium chloride solution, dried (sodium sulfate), filtered and the solvent was carefully removed in vacuum (750 mBar, 45° C.) to give 6.48 g of the title compound as a crude product that was used for the next step without purification.

The Compounds in the following table 4 were synthesised according to the preparations, and from starting materials (SM), as specified for the respective Compounds in their table entries below.

TABLE 4

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Starting material (SM):

Compound
Synthesis procedure in analogy to the preparation of:

Compound 169.02

embedded image

1-[(3,3-difluorocyclobutyl)methyl]-4-(4,4,5,5-tetramethyl-1,3,2-

dioxaborolan-2-yl)-1H-pyrazole

LC-MS (Method 1): R_t= 1.18 min; MS (ESIpos): m/z = 299 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (2.04), 1.172 (0.68), 1.244

(16.00), 1.987 (1.09), 4.235 (0.66), 4.250 (0.51), 7.589 (1.21), 7.591 (1.27),

7.981 (1.20).

SM: Compound 169.01 and 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-

1H-pyrazole

Synthesis in analogy to the preparation of Compound 39.01

Compound 170.01

embedded image

1-{[(1RS)-2,2-dichlorocyclopropyl]methyl}-4-(4,4,5,5-tetramethyl-1,3,2-

dioxaborolan-2-yl)-1H-pyrazole

LC-MS (Method 2): R, = 1.23 min; MS (ESIpos): m/z = 316 [M − H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (4.21), 1.241 (0.58), 1.254

(16.00), 1.599 (0.75), 1.618 (0.48), 1.805 (0.53), 1.824 (0.50), 1.832 (0.59),

1.851 (0.52), 3.936 (0.65), 4.304 (0.66), 4.309 (0.70), 4.320 (0.65), 4.328

(0.58), 7.642 (1.29), 8.007 (1.26).

SM: (2RS)-2-(bromomethyl)-1,1-dichlorocyclopropane (CAS No. 3591-45-5)

and 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Synthesis in analogy to the preparation of Compound 39.01

Compound 171.01

embedded image

1-(cyclobutylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-

pyrazole

LC-MS (Method 2): R_t= 1.24 min; MS (ESIpos): m/z = 263 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (1.56), 1.172 (0.85), 1.240

(16.00), 1.987 (1.36), 3.329 (2.68), 4.111 (1.24), 4.129 (1.23), 7.550 (1.22),

7.552 (1.23), 7.894 (1.22).

SM: (bromomethyl)cyclobutane and 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-

2-yl)-1H-pyrazole

Synthesis in analogy to the preparation of Compound 39.01

Compound 172.01

embedded image

3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-

diamine

LC-MS (Method 1): R_t= 0.93 min; MS (ESIpos): m/z = 253 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (5.75), 1.156 (3.60), 1.173

(1.27), 1.191 (0.67), 1.234 (16.00), 1.988 (2.49), 3.938 (0.94), 4.018 (0.56),

4.035 (0.56), 4.235 (0.84), 5.206 (0.98), 6.294 (0.69), 6.314 (0.74), 6.659

(0.41), 6.675 (0.46), 6.678 (0.42).

SM: 4-bromo-3-fluorobenzene-1,2-diamine

Synthesis in analogy to the preparation of Compound 01.03

Compound 169.03

embedded image

4-{1-[(3,3-difluorocyclobutyl)methyl]-1H-pyrazol-4-yl}-2-nitroaniline

LC-MS (Method 1): R_t= 1.06 min; MS (ESIpos): m/z = 309 [M + H]⁺

¹H-NMR (500 MHz, DMSO-d6) δ [ppm]: 2.358 (0.73), 2.361 (0.97), 2.365

(0.70), 2.412 (1.41), 2.421 (1.16), 2.428 (1.83), 2.438 (2.43), 2.443 (2.27),

2.453 (2.21), 2.458 (2.57), 2.470 (2.94), 2.515 (3.62), 2.518 (3.20), 2.522

(2.52), 2.618 (3.20), 2.632 (5.43), 2.635 (5.46), 2.639 (4.30), 2.642 (4.09),

2.653 (3.05), 2.657 (2.99), 2.679 (1.70), 2.687 (0.53), 2.696 (0.62), 3.161

(1.44), 3.171 (1.47), 4.220 (9.33), 4.232 (7.98), 5.758 (1.24), 7.030 (9.86),

7.047 (10.23), 7.429 (13.88), 7.644 (5.76), 7.649 (5.56), 7.662 (5.12), 7.666

(5.14), 7.849 (16.00), 7.851 (15.88), 8.098 (10.71), 8.101 (10.04), 8.203

(15.13), 8.204 (14.82).

SM: Compound 169.02 and 4-bromo-2-nitroaniline

Synthesis in analogy to the preparation of Compound 39.02

Compound 170.02

embedded image

4-(1-{[(1RS)-2,2-dichlorocyclopropyl]methyl}-1H-pyrazol-4-yl)-2-

nitroaniline

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 327 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.203 (0.44), 1.219 (0.52), 1.228

(0.42), 1.604 (4.44), 1.623 (8.45), 1.643 (5.42), 1.825 (5.34), 1.844 (5.06),

1.852 (6.35), 1.871 (5.15), 2.261 (1.22), 2.278 (1.66), 2.281 (2.90), 2.288

(1.28), 2.297 (2.63), 2.300 (2.07), 2.305 (1.73), 2.307 (2.66), 2.317 (1.43),

2.325 (2.60), 2.327 (2.13), 2.344 (1.01), 2.518 (2.14), 2.523 (1.54), 2.532

(0.87), 2.665 (0.43), 2.669 (0.59), 3.963 (0.76), 4.238 (2.59), 4.254 (2.50),

4.274 (5.74), 4.290 (6.05), 4.299 (0.43), 4.319 (5.64), 4.338 (5.10), 4.355

(2.57), 4.374 (2.45), 5.758 (3.65), 7.041 (9.10), 7.063 (9.41), 7.445 (11.81),

7.525 (0.41), 7.528 (0.69), 7.533 (0.46), 7.536 (0.61), 7.540 (0.41), 7.544

(1.08), 7.547 (1.48), 7.549 (1.40), 7.555 (1.27), 7.558 (1.03), 7.565 (1.73),

7.566 (1.29), 7.572 (1.39), 7.592 (1.15), 7.596 (1.99), 7.601 (0.48), 7.606

(0.83), 7.609 (1.04), 7.613 (1.73), 7.615 (1.52), 7.622 (1.91), 7.625 (2.15),

7.630 (1.15), 7.638 (0.76), 7.642 (1.25), 7.645 (1.32), 7.649 (0.73), 7.655

(5.27), 7.661 (5.50), 7.677 (4.82), 7.683 (4.82), 7.689 (0.70), 7.827 (0.56),

7.829 (0.56), 7.903 (15.39), 7.905 (16.00), 7.968 (0.51), 7.970 (0.49), 7.986

(0.52), 7.988 (0.51), 8.109 (9.77), 8.114 (9.79), 8.155 (0.40), 8.182 (0.55),

8.227 (13.89), 8.229 (13.67), 8.316 (0.48).

Compound 170.01 and 4-bromo-2-nitroaniline

Synthesis in analogy to the preparation of Compound 39.02

Compound 171.02

embedded image

4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-3-fluoro-2-nitroaniline

LC-MS (Method 2): R_t= min; MS (ESIpos): m/z = 291 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (16.00), 1.738 (1.01), 1.760

(1.38), 1.766 (0.92), 1.779 (1.47), 1.783 (1.44), 1.795 (1.64), 1.801 (1.52),

1.811 (1.66), 1.816 (1.25), 1.829 (0.92), 1.838 (1.32), 1.855 (0.57), 1.861

(0.82), 1.935 (0.66), 1.951 (1.10), 1.958 (1.27), 1.966 (1.22), 1.970 (1.72),

1.980 (1.37), 1.987 (1.20), 1.997 (0.57), 2.518 (0.93), 2.522 (0.63), 2.732

(0.81), 2.750 (1.13), 2.769 (0.89), 3.939 (2.78), 4.132 (5.27), 4.151 (5.14),

6.783 (1.80), 6.787 (1.72), 6.806 (1.85), 6.809 (1.79), 6.935 (4.65), 7.528

(0.60), 7.533 (0.49), 7.536 (0.59), 7.547 (1.45), 7.549 (1.37), 7.555 (1.21),

7.557 (1.06), 7.564 (1.65), 7.572 (1.41), 7.592 (1.23), 7.595 (2.13), 7.602

(0.60), 7.608 (2.52), 7.612 (1.98), 7.621 (2.18), 7.627 (3.03), 7.638 (0.84),

7.641 (1.36), 7.645 (1.32), 7.650 (1.56), 7.769 (3.55), 8.026 (2.74), 8.031

(2.59).

Compound 171.01 and 4-bromo-3-fluoro-2-nitroaniline

Synthesis in analogy to the preparation of Compound 39.02

Compound 169.04

embedded image

4-{1-[(3,3-difluorocyclobutyl)methyl]-1H-pyrazol-4-yl}benzene-1,2-diamine

LC-MS (Method 1): R_t= 0.66 min; MS (ESIpos): m/z = 279 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.036 (8.07), 1.054 (16.00), 1.071

(8.12), 1.241 (1.00), 1.253 (0.86), 1.313 (1.99), 2.257 (0.63), 2.267 (0.52),

2.323 (0.50), 2.327 (0.63), 2.331 (0.47), 2.386 (1.40), 2.397 (1.24), 2.406

(1.83), 2.420 (2.38), 2.427 (2.36), 2.437 (2.25), 2.444 (2.49), 2.459 (3.03),

2.518 (2.43), 2.523 (1.71), 2.536 (0.53), 2.582 (1.75), 2.593 (3.29), 2.612

(5.12), 2.624 (3.88), 2.634 (3.05), 2.643 (3.15), 2.664 (1.78), 2.669 (2.21),

2.689 (0.57), 3.433 (1.74), 3.444 (1.66), 4.195 (8.65), 4.211 (7.42), 4.360

(1.07), 4.956 (4.34), 6.530 (7.04), 6.551 (10.53), 6.621 (5.72), 6.626 (5.99),

6.641 (3.58), 6.645 (4.07), 6.726 (9.90), 6.730 (8.83), 7.598 (14.58), 7.877

(13.84), 7.887 (0.66).

SM: Compound 169.03

Synthesis in analogy to the preparation of Compound 39.03

Compound 170.03

embedded image

4-(1-{[(1RS)-2,2-dichlorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-

1,2-diamine

LC-MS (Method 1): R_t= 0.75 min; MS (ESIpos): m/z = 297 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.160 (0.42), 1.581 (4.22), 1.600

(8.40), 1.620 (5.17), 1.817 (5.08), 1.836 (4.93), 1.845 (6.17), 1.863 (5.11),

2.233 (1.20), 2.253 (2.92), 2.260 (1.31), 2.270 (2.70), 2.279 (2.75), 2.289

(1.41), 2.297 (2.34), 2.316 (1.08), 2.323 (0.44), 2.327 (0.47), 2.523 (1.14),

4.228 (0.66), 4.245 (0.85), 4.265 (9.57), 4.267 (9.89), 4.281 (8.52), 4.286

(7.98), 4.304 (0.75), 4.322 (0.71), 4.450 (11.78), 5.758 (7.53), 6.480 (8.42),

6.499 (11.39), 6.587 (6.25), 6.592 (6.52), 6.607 (4.24), 6.612 (4.68), 6.697

(10.79), 6.702 (10.22), 7.529 (0.62), 7.536 (0.60), 7.547 (1.56), 7.550 (1.55),

7.555 (1.31), 7.558 (1.23), 7.565 (1.83), 7.573 (1.47), 7.597 (2.23), 7.614

(2.04), 7.626 (3.39), 7.633 (16.00), 7.643 (1.81), 7.700 (0.46), 7.739 (0.47),

7.878 (14.74), 7.951 (0.44), 8.042 (0.44).

SM: Compound 170.02

Synthesis in analogy to the preparation of Compound 39.03

Compound 171.03

embedded image

4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-3-fluorobenzene-1,2-diamine

LC-MS (Method 2): R_t= min; MS (ESIpos): m/z = 261 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.054 (0.73), 1.067 (16.00), 1.760

(0.41), 1.780 (0.45), 1.784 (0.46), 1.794 (0.52), 1.802 (0.47), 1.810 (0.49),

1.970 (0.48), 4.108 (1.48), 4.126 (1.41), 6.360 (0.55), 6.362 (0.52), 6.381

(0.62), 6.383 (0.57), 6.634 (0.48), 6.655 (0.84), 7.650 (0.99), 7.849 (0.79),

7.854 (0.75).

SM: Compound 171.02

Synthesis in analogy to the preparation of Compound 39.03

Compound 172.02

embedded image

3-fluoro-4-(6-methylpyrimidin-4-yl)benzene-1,2-diamine

LC-MS (Method 1): R_t= 0.62 min; MS (ESIpos): m/z = 219 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.454 (16.00), 4.562 (3.69), 5.437

(3.78), 6.441 (1.91), 6.463 (2.00), 7.238 (1.42), 7.259 (2.74), 7.280 (1.34),

7.570 (2.81), 8.939 (3.22), 8.942 (3.26).

SM: Compound 172.01 and 4-chloro-6-methylpyrimidine

Synthesis in analogy to the preparation of Compound 60.01

Compound 173.01

embedded image

3-fluoro-4-[6-(trifluoromethyl)pyrimidin-4-yl]benzene-1,2-diamine

LC-MS (Method 1): R_t= 0.98 min; MS (ESIpos): m/z = 273 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.064 (11.03), 2.518 (3.10), 2.522

(2.08), 2.673 (0.64), 3.937 (1.87), 4.678 (15.60), 5.767 (16.00), 6.370 (0.55),

6.483 (8.83), 6.505 (9.10), 7.398 (6.44), 7.419 (11.68), 7.440 (5.88), 7.984

(0.65), 8.008 (15.70), 8.011 (15.29), 9.281 (13.20), 9.346 (1.02).

SM: Compound 172.01 and 4-bromo-6-(trifluoromethyl)pyrimidine

Synthesis in analogy to the preparation of Compound 60.01

The Compounds in the table 5 below were prepared analogously to the procedure for the preparation of Compound 107.01.01.

TABLE 5

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Compound
Starting material (SM):

Compound 164.01

embedded image

N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-{6-[3-

(trifluoromethyl)azetidin-1-yl]pyrimidin-4-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.04 min; MS (ESIneg): m/z = 522 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.032 (6.77), 1.049 (16.00), 1.067

(7.12), 1.151 (0.57), 1.160 (5.76), 1.169 (1.28), 1.176 (5.98), 1.187 (0.49),

1.229 (0.68), 1.686 (2.47), 1.699 (2.49), 1.905 (1.15), 1.985 (1.07), 2.082

(0.68), 2.518 (2.53), 2.523 (1.79), 3.161 (0.64), 3.266 (0.98), 3.407 (3.03),

3.425 (8.59), 3.443 (7.67), 3.460 (3.88), 3.563 (0.46), 3.716 (0.47), 3.732

(0.50), 3.753 (0.55), 3.906 (0.90), 3.918 (0.87), 3.928 (0.90), 3.941 (0.75),

4.015 (0.56), 4.032 (0.57), 4.050 (0.42), 4.246 (0.75), 4.260 (0.75), 4.270

(0.84), 4.283 (0.83), 4.368 (1.51), 4 483 (0.78), 4.507 (1.06), 4.529 (0.72),

4.568 (1.49), 4.592 (2.14), 4.616 (1.28), 5.759 (9.20), 7.157 (5.03), 7.588

(2.42), 7.676 (0.79), 7.821 (2.21), 7.842 (2.51), 8.011 (1.78), 8.014 (1.78),

8.032 (1.41), 8.036 (1.49), 8.284 (2.74), 8.561 (1.64), 8.574 (1.55), 8.811

(4.92), 9.836 (0.64).

SM: Example 164.01

Compound 165.01

embedded image

6-[6-(2,2-difluoropropoxy)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-

1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.13 min; MS (ESIneg): m/z = 493 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.032 (0.74), 1.050 (1.46), 1.067

(0.74), 1.142 (0.42), 1.227 (0.84), 1.509 (0.62), 1.557 (1.49), 1.604 (0.68),

1.691 (5.80), 1.704 (5.80), 1.726 (8.91), 1.774 (16.00), 1.822 (6.96), 2.332

(1.30), 2.518 (6.90), 2.523 (4.79), 3.057 (0.42), 3.162 (7.61), 3.273 (2.17),

3.371 (1.30), 3.383 (1.75), 3.393 (1.59), 3.408 (1.85), 3.426 (2.75), 3.443

(3.56), 3.456 (4.15), 3.468 (4.47), 3.485 (4.18), 3.497 (3.43), 3.508 (2.20),

3.526 (1.98), 3.549 (2.01), 3.578 (1.00), 3.645 (0.71), 3.650 (0.78), 3.657

(0.81), 3.661 (1.33), 3.665 (1.17), 3.673 (1.39), 3.675 (1.55), 3.697 (1.46),

3.699 (1.43), 3.707 (0.97), 3.711 (1.26), 3.723 (0.65), 3.727 (0.81), 3.739

(0.52), 3.859 (0.45), 3.915 (0.42), 3.933 (0.74), 3.953 (0.78), 3.972 (0.45),

3.997 (11.17), 4.170 (0.55), 4.181 (0.81), 4.203 (0.52), 4.710 (5.44), 4.743

(9.91), 4.776 (4.89), 4.901 (1.59), 4.953 (1.72), 5.001 (1.68), 5.058 (1.55),

5.098 (1.33), 5.759 (0.45), 6.192 (0.42), 6.197 (0.45), 6.207 (0.45), 6.352

(0.42), 6.893 (0.52), 7.121 (0.45), 7.498 (2.69), 7.501 (2.72), 7.583 (5.93),

7.610 (0.84), 7.619 (0.62), 7.655 (10.43), 7.657 (10.75), 7.672 (2.01), 7.720

(0.45), 7.743 (0.94), 7.748 (1.20), 7.752 (1.10), 7.761 (6.80), 7.783 (6.90),

7.835 (0.65), 7.839 (1.00), 7.844 (0.62), 8.067 (0.45), 8.174 (1.17), 8.178

(1.20), 8.196 (1.20), 8.199 (1.20), 8.212 (4.24), 8.216 (4.40), 8.234 (3.63),

8.237 (3.89), 8.333 (0.65), 8.375 (0.45), 8.496 (1.78), 8.536 (6.54), 8.538

(6.41), 8.577 (4.34), 8.590 (3.95), 8.893 (3.14), 8.895 (3.24), 8.918 (12.28),

8.921 (12.44), 9.262 (1.00), 9.759 (1.59).

SM: Example 165.01

Compound 166.01

embedded image

6-[6-(2,2,3,3,3-pentafluoropropoxy)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.27 min; MS (ESIneg): m/z = 547 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.031 (1.69), 1.049 (3.16), 1.066

(1.72), 1.168 (0.53), 1.227 (0.75), 1.376 (0.44), 1.698 (3.13), 1.713 (3.16),

1.905 (16.00), 1.984 (1.00), 2.518 (2.82), 2.522 (1.88), 3.282 (1.09), 3.407

(0.98), 3.425 (2.36), 3.442 (2.50), 3.459 (1.83), 3.472 (1.46), 3.996 (0.68),

4.712 (0.56), 5.061 (0.41), 5.183 (0.64), 5.217 (0.97), 5.240 (2.16), 5.274

(3.82), 5.309 (1.97), 6.934 (0.44), 6.956 (0.42), 7.444 (0.87), 7.446 (0.90),

7.590 (3.11), 7.694 (1.06), 7.715 (5.68), 7.718 (5.77), 7.764 (3.06), 7.785

(3.13), 8.126 (0.49), 8.131 (0.47), 8.233 (2.29), 8.238 (2.38), 8.255 (2.04),

8.259 (2.19), 8.552 (3.69), 8.555 (3.74), 8.579 (2.34), 8.592 (2.15), 8.830

(0.98), 8.833 (0.98), 8.968 (6.69), 8.971 (6.86), 9.794 (0.80).

SM: Example 166.01

Compound 167.01

embedded image

6-(6-ethoxy-5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-

ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 1.03 min; MS (ESIpos): m/z = 461 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.400 (2.61), 1.417 (5.64), 1.435

(2.68), 2.518 (0.83), 2.522 (0.58), 3.160 (16.00), 3.476 (1.62), 3.811 (11.99),

4.488 (1.06), 4.505 (2.79), 4.522 (2.34), 4.540 (0.74), 7.585 (1.41), 7.638

(0.57), 7.650 (0.55), 7.765 (1.25), 7.786 (1.35), 8.067 (1.20), 8.071 (1.11),

8.089 (0.92), 8.092 (0.97), 8.411 (1.64), 8.414 (1.59), 8.564 (1.09), 8.577

(1.03), 8.592 (5.19), 9.902 (0.44).

SM: Example 167.01

Compound 168.01

embedded image

6-(furo[3,2-d]pyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-

benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.87 min; MS (ESIpos): m/z = 427 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.022 (16.00), 1.037 (15.72), 1.061

(4.53), 1.319 (0.99), 3.480 (0.65), 3.735 (0.46), 3.750 (1.12), 3.765 (1.47),

3.780 (1.07), 3.796 (0.41), 7.359 (0.90), 7.365 (0.89), 7.604 (0.50), 7.887

(0.45), 7.909 (0.46), 8.515 (0.40), 8.519 (0.40), 8.720 (0.83), 8.726 (0.82),

8.848 (0.53), 8.852 (0.53), 9.142 (1.60).

SM: Example 168.01

Compound 169.05

embedded image

6-{1-[(3,3-difluorocyclobutyl)methyl]-1H-pyrazol-4-yl}-N-{4-[(1R or 1S)-

1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.06 min; MS (ESIpos): m/z = 493 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.023 (15.88), 1.039 (16.00), 1.667

(1.24), 1.684 (1.53), 1.709 (1.16), 2.518 (1.58), 2.522 (1.18), 2.654 (0.80),

2.664 (0.96), 2.669 (0.99), 3.276 (0.73), 3.463 (0.87), 3.736 (0.52), 3.751

(1.22), 3.766 (1.60), 3.782 (1.20), 3.797 (0.50), 4.282 (1.17), 4.296 (1.06),

5.758 (5.51), 7.544 (1.20), 7.570 (0.99), 7.574 (0.99), 7.591 (1.04), 7.595

(1.06), 7.640 (1.55), 7.661 (1.10), 7.770 (1.42), 7.906 (2.89), 8.256 (2.20),

8.415 (1.01), 8.429 (0.93), 8.564 (0.83), 8.577 (0.75), 9.736 (0.44).

SM: Example 169.01

Compound 170.04

embedded image

6-(1-{[(1RS)-2,2-dichlorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R

or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.11 min; MS (ESIpos): m/z = 511 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.026 (16.00), 1.041 (15.69), 1.231

(0.84), 1.635 (2.11), 1.654 (3.68), 1.662 (0.84), 1.673 (2.19), 1.682 (0.50),

1.708 (0.46), 1.860 (1.88), 1.878 (2.11), 1.886 (2.57), 1.897 (0.42), 1.905

(1.84), 2.296 (0.50), 2.314 (1.23), 2.323 (2.07), 2.327 (2.53), 2.332 (2.49),

2.340 (1.27), 2.352 (0.58), 2.360 (1.15), 2.378 (0.54), 2.518 (8.29), 2.523

(5.68), 2.660 (0.77), 2.665 (1.61), 2.669 (2.23), 2.674 (1.57), 2.727 (8.79),

2.888 (10.94), 3.359 (0.84), 3.738 (0.73), 3.753 (1.38), 3.768 (1.73), 3.784

(1.38), 3.799 (0.84), 3.971 (7.02), 4.357 (4.53), 4.375 (4.87), 4.386 (0.81),

7.476 (1.04), 7.585 (1.34), 7.588 (1.34), 7.606 (2.30), 7.609 (2.53), 7.642

(2.95), 7.663 (1.46), 7.781 (2.99), 7.950 (1.46), 7.966 (6.06), 8.028 (0.61),

8.247 (0.42), 8.268 (5.49), 8.307 (0.50), 8.534 (0.84), 8.572 (0.65).

SM: Example 170.01

Compound 171.04

embedded image

6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-7-fluoro-N-{4-[(1R or 1S)-1-

(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 475 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.849 (0.82), 1.033 (0.88), 1.050

(1.52), 1.068 (1.23), 1.087 (0.88), 1.142 (1.58), 1.169 (1.35), 1.229 (3.75),

1.254 (2.52), 1.294 (1.64), 1.669 (10.55), 1.775 (3.46), 1.795 (5.04), 1.815

(7.38), 1.826 (8.67), 1.836 (10.26), 1.854 (4.28), 1.862 (4.69), 1.876 (2.34),

1.884 (3.16), 1.900 (1.35), 1.964 (2.70), 1.978 (4.10), 1.986 (5.45), 1.995

(5.10), 2.007 (5.33), 2.024 (2.58), 2.323 (2.40), 2.327 (3.28), 2.331 (2.46),

2.523 (13.19), 2.669 (3.40), 2.759 (1.64), 2.770 (2.87), 2.789 (3.75), 2.807

(3.22), 2.826 (1.64), 2.856 (1.11), 3.058 (1.47), 3.162 (3.69), 3.245 (3.87),

3.383 (5.22), 3.394 (5.57), 3.426 (6.80), 3.443 (7.38), 3.456 (7.44), 3.467

(6.86), 3.485 (5.80), 3.497 (4.69), 3.650 (1.41), 3.661 (2.11), 3.675 (2.29),

3.698 (2.34), 3.712 (2.05), 3.728 (1.88), 3.740 (1.47), 3.751 (1.41), 3.756

(1.47), 4.188 (16.00), 4.207 (15.71), 4.243 (1.76), 4.608 (2.64), 5.759 (0.47),

7.457 (5.16), 7.479 (7.09), 7.535 (7.74), 7.546 (5.51), 7.563 (7.79), 7.572

(5.92), 7.579 (6.86), 7.594 (7.91), 7.599 (5.98), 7.610 (5.33), 7.620 (5.63),

7.640 (3.46), 7.698 (0.82), 7.856 (1.17), 7.907 (13.48), 8.062 (1.64), 8.139

(0.70), 8.181 (9.96), 8.345 (0.76), 8.408 (1.35), 8.421 (1.35), 8.512 (3.63),

8.525 (3.52), 9.028 (2.40), 9.041 (2.34), 9.707 (2.64).

SM: Example 171.01

Compound 172.03

embedded image

7-fluoro-6-(6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-

yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride

LC-MS (Method 2): R_t= 0.94 min; MS (ESIpos): m/z = 433 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.023 (5.26), 1.039 (5.34), 1.696

(2.96), 1.713 (3.03), 2.518 (1.45), 2.523 (0.94), 2.588 (16.00), 3.481 (1.15),

3.751 (0.43), 3.766 (0.54), 3.781 (0.41), 4.667 (0.40), 7.517 (1.60), 7.569

(2.52), 7.590 (2.75), 7.607 (1.05), 7.619 (1.02), 7.898 (1.82), 7.906 (3.11),

7.915 (1.79), 7.918 (1.50), 7.935 (1.22), 8.505 (1.57), 8.519 (1.45), 9.193

(3.88), 9.195 (3.87), 9.820 (0.81).

SM: Example 172.01

Compound 173.02

embedded image

7-fluoro-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-

(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine

hydrochloride

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 487 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.023 (15.69), 1.039 (16.00), 1.681

(1.04), 1.697 (1.03), 2.518 (0.98), 2.522 (0.61), 3.161 (0.67), 3.466 (0.49),

3.735 (0.45), 3.751 (1.05), 3.766 (1.35), 3.782 (1.03), 3.797 (0.43), 5.758

(2.01), 7.429 (0.58), 7.563 (1.75), 7.584 (1.44), 7.930 (0.60), 7.947 (0.69),

7.951 (0.63), 7.968 (0.51), 8.334 (1.69), 8.479 (0.74), 8.493 (0.70), 9.522

(1.72).

SM: Example 173.01

Compound 174.01.01
4-[6-(difluoromethyl)pyrimidin-4-yl]benzene-1,2-diamine

embedded image

4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,2-diamine (500 mg, see Compound 01.03), 4-chloro-6-(difluoromethyl)pyrimidine (387 mg; for a preparation see e.g. WO2011/045353)). tetrakis(triphenylphosphine)palladium(0) (123 mg, 107 μmol) were solubilised in 1,4-dioxane (17 ml) and aqueous K₂CO₃solution (3.2 ml, 2.0 M) was added. The reaction mixture was stirred at 80° C. for 3h. The reaction mixture was then filtered and concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel to give 468 mg (73% purity) of the title compound.

LC-MS (Method 2): R_t=0.75 min; MS (ESIpos): m/z=237 [M+H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (7.55), 1.156(0.56), 1.227 (16.00), 1.241 (3.30), 1.281 (1.02), 2.518 (1.67), 2.523 (1.16), 3.159 (11.42), 3.172 (11.15). 3.939 (1.16). 4.084 (0.85), 4.097 (2.57), 4.110 (2.57), 4.123 (0.82), 4.374 (0.49), 4.725 (3.86), 4.821 (1.04), 5.333 (4.96), 5.758 (0.50), 6.444 (0.98), 6.463 (1.06), 6.586 (4.11), 6.607 (4.04), 6.748 (0.59), 6.752 (0.63), 6.768 (0.52), 6.771 (0.55), 6.791 (1.97), 6.874 (1.05), 6.877 (1.01), 6.927 (4.03), 7.063 (1.67), 7.403 (2.01), 7.408 (2.16), 7.424 (1.83), 7.429 (2.08), 7.510 (4.12), 7.516 (3.83), 7.915 (3.85), 9.105 (3.82).

Compound 174.01.02
tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-4-[6-(difluoromethyl)pyrimidin-4-yl]phenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Imidazole (26.5 mg), TCDI (405 mg, 90% purity) and tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (597 mg, see Compound 36.05) were combined in dichloromethane (9 ml) and the reaction mixture was stirred at 0° C. for 30 minutes.

Then the mixture was stored in a refrigerator overnight. The mixture was stirred at room temperature for 2 additional hours and additional portions of imidazole (26.5 mg) and TCDI (405 mg, 90% purity) were added. The reaction mixture was stirred at room temperature for 2 hours. 4-[6-(Difluoromethyl)pyrimidin-4-yl]benzene-1,2-diamine (460 mg), solubilised in dichloromethane (9 ml), was added and the mixture was stirred at room temperature overnight. The reaction mixture was diluted with water and extracted with DCM. The organic phase was washed with water and brine and then dried (silicone filter) and concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel to give 601 mg of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=585 [M+H]⁺.

Compound 175.01.01
4-(2-chlorothiophen-3-yl)benzene-1,2-diamine

embedded image

4-Bromobenzene-1,2-diamine (600 mg), (2-chlorothiophen-3-yl)boronic acid (1.04 g) and bis(triphenylphosphine)palladium(II) dichloride (113 mg) were solubilised in 1,2-dimethoxyethane (20 ml) and an aqueous solution of K₂CO₃(4.8 ml, 2.0 M) was added. The reaction mixture was stirred for 10 min under microwave irradiation at 130° C. The mixture was filtered and concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel to give 250 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=225 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=4.54-4.68 (m, 4H), 6.55 (d, 1H), 6.62-6.66 (m, 1H), 6.78 (d, 1H), 7.06 (d, 1H), 7.43 (d, 1H).

Compound 175.01.02
tert-butyl 4-{[2-({[4-amino-6-(2-chlorothiophen-3-yl)pyridin-3-yl]carbamothioyl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Imidazole (15.1 mg) and TCDI (238 mg) were solubilised in dichloromethane (9.1 ml) under inert atmosphere. The solution was cooled to 0° C. and a solution of tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (325 mg, see Compound 01.02) in dichloromethane (9.1 ml) was added. The mixture was stored overnight in the refrigerator, after which 4-(2-chlorothiophen-3-yl)benzene-1,2-diamine (250 mg, 1.11 mmol) was added and the mixture was stirred for 5 h at rt. The mixture was diluted with water and extracted with DCM.

The combined organic phases were dried over a silicone filter and concentrated under reduced pressure. The crude title compound was used without further purification.

Compound 179.01.01
5,6-dichloro-N,N-dimethylpyrimidin-4-amine

embedded image

4,5,6-Trichloropyrimidine (500 mg), a solution of N-methylmethanamine in THF (1.5 ml, 2.0 M) and solid potassium carbonate (414 mg) were stirred in dioxane overnight at 110° C. The mixture was then diluted with water and extracted with DCM. The organic layer was dried over a silicone filter and concentrated under reduced pressure. The crude title compound (493 mg) was used without further purification

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=192 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.518 (0.95), 2.523 (0.68), 3.017 (5.70), 3.191 (16.00), 8.303 (1.46).

The following Compounds shown in table 6, below, were prepared according to the following general procedure:

The corresponding Boc protected amine (see Examples 174.01 to 199.01, tables 20 and 21) (1 eq.) was solubilized in a mixture of DCM and MeOH (generally 2:1) and 4N HCl in dioxane (5 eq.) was added slowly. The reaction was stirred between 2 and 48 hours at rt and then concentrated. The crude mixture was used without further purification.

TABLE 6

Structure

IUPAC-Name

Compound
LC-MS (method): Retention time; Mass found

Compound 174.01

embedded image

6-[6-(difluoromethyl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1- yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 0.99 min; MS (ESIpos): m/z = 451.8 [M − H]⁺

Compound 175.01

embedded image

6-(2-chlorothiophen-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]- 1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.18 min; MS (ESIpos): m/z = 425.5 [M − H]⁺

Compound 176.01

embedded image

From example 186.01 6-(6-methoxy-2-methylpyrimidin-4-yl)-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.22 min; MS (ESIpos): m/z = 431.4 [M − H]⁺

Compound 177.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[2-(pyrrolidin-1- yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.07 min; MS (ESIpos): m/z = 456 [M − H]⁺

Compound 178.01

embedded image

6-[2-(dimethylamino)-6-methylpyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 444 [M − H]⁺

Compound 179.01

embedded image

6-[5-chloro-6-(dimethylamino)pyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.01 min; MS (ESIpos): m/z = 464 [M + H]⁺

Compound 180.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-2-yl)-1H- benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.01 min; MS (ESIpos): m/z = 387 [M + H]⁺

Compound 181.01

embedded image

6-[4-(dimethylamino)pyrimidin-2-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.17 min; MS (ESIpos): m/z = 430 [M + H]⁺

Compound 182.01

embedded image

6-(5,7-dihydrofuro[3,4-d]pyrimidin-4-yl)-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 0.83 min; MS (ESIpos): m/z = 429.7 [M + H]⁺

Compound 183.01

embedded image

6-[5-methyl-6-(trifluoromethyl)pyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.08 min; MS (ESIpos): m/z = 469.8 [M + H]⁺

Compound 184.01

embedded image

6-(5-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]- 1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 0.94 min; MS (ESIpos): m/z = 401 [M + H]⁺

Compound 185.01

embedded image

6-(6-methoxy-2-methylpyrimidin-4-yl)-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.21 min; MS (ESIpos): m/z = 431 [M + H]⁺

Compound 189.01

embedded image

6-[6-(dimethylamino)-2-methoxypyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.23 min; MS (ESIpos): m/z = 460.5 [M + H]⁺

Compound 190.01

embedded image

6-[6-(dimethylamino)-2-methylpyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.18 min; MS (ESIpos): m/z = 444.5 [M + H]⁺

Compound 191.01

embedded image

6-{6-[(cyclobutylmethyl)amino]-5-fluoropyrimidin-4-yl}-N-[4- (piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.12 min; MS (ESIpos): m/z = 488 [M + H]⁺

Compound 192.01

embedded image

6-[6-(cyclopropylamino)-5-fluoropyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 0.93 min; MS (ESIpos): m/z = 460 [M + H]⁺

Compound 193.01

embedded image

6-[5-fluoro-6-(propan-2-ylamino)pyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 462 [M + H]⁺

Compound 194.01

embedded image

6-[6-(cyclobutylamino)-5-fluoropyrimidin-4-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 462 [M + H]⁺

Compound 195.01

embedded image

6-{6-[(cyclopropylmethyl)amino]-5-fluoropyrimidin-4-yl}-N-[4- (piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 1.01 min; MS (ESIpos): m/z = 474 [M + H]⁺

Compound 196.01

embedded image

6-[3-(dimethylamino)pyrazin-2-yl]-N-[4-(piperazin-1- ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 0.98 min; MS (ESIpos): m/z = 430 [M + H]⁺

Compound 197.01

embedded image

6-{6-[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2- amine hydrochloride LC-MS (Method 2): R_t= 1.07 min; MS (ESIpos): m/z = 484 [M + H]⁺

Compound 199.01

embedded image

N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(tetrahydro-2H-pyran- 4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride LC-MS (Method 2): R_t= 0.88 min; MS (ESIpos): m/z = 471 [M + H]⁺

Experimental Section—Description of Examples
Example 01.01
tert-butyl 4-[(2-{[6-(2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 4-bromo-2-methylpyridine (225 mg, 1.31 mmol) and tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) in dioxane (4.5 mL) and water (910 μl) was added sodium carbonate (297 mg, 2.81 mmol) and Pd(dppf)C₂. CH₂Cl₂(115 mg, 140 μmol). The mixture was heated to reflux for 19 h. Dichloromethane was added, the mixture was filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 21.0 mg (4% yield) of the title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=500 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.395 (16.00), 2.359 (2.40), 2.525 (9.91), 3.501 (2.39), 7.181 (1.30), 8.260 (0.95), 8.273 (0.95).

Example 01.02
cyclopropyl{4-[(2-{[6-(2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-(2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (81.0 mg, approx. 186 μmol) in DMF (4 mL) was added sodium bicarbonate (93.6 mg, 1.11 mmol), cyclopropanecarboxylic acid (24.0 mg, 279 μmol) and HATU (106 mg, 279 μmol). The mixture was stirred at room temperature for 16 h.

Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with dichloromethane. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 19 mg of the title compound.

LC-MS (Method 4): R_t=1.01 min; MS (ESIpos): m/z=468 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.678 (1.22), 0.685 (2.83), 0.691 (1.78), 0.698 (1.46), 0.705 (3.54), 0.709 (2.98), 0.713 (3.28), 0.721 (3.07), 0.726 (3.50), 0.733 (1.59), 1.949 (0.64), 1.956 (0.71), 1.969 (1.20), 1.981 (0.69), 2.323 (0.97), 2.327 (1.39), 2.332 (1.09), 2.366 (1.35), 2.446 (1.31), 2.518 (7.34), 2.526 (16.00), 2.539 (1.63), 2.665 (0.90), 2.669 (1.31), 2.673 (0.92), 3.525 (5.51), 3.710 (1.24), 6.946 (1.27), 6.959 (1.31), 7.202 (2.60), 7.457 (0.92), 8.271 (2.47), 8.284 (2.34), 8.439 (0.99).

Example 01.03
3,3,3-trifluoro-1-{4-[(2-{[6-(2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (81.0 mg, approx. 186 μmol) and 3,3,3-trifluoropropanoic acid (35.7 mg, 279 μmol), Example 01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 33.0 mg of the title compound.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=510 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.322 (0.95), 2.327 (1.44), 2.332 (1.06), 2.370 (1.25), 2.383 (1.89), 2.395 (1.44), 2.411 (1.23), 2.425 (1.75), 2.437 (1.51), 2.518 (8.20), 2.525 (16.00), 2.539 (1.80), 2.665 (0.99), 2.669 (1.44), 2.673 (1.04), 3.472 (1.54), 3.484 (1.58), 3.510 (1.84), 3.526 (5.15), 3.613 (0.73), 3.640 (2.03), 3.667 (1.89), 4.050 (2.34), 6.936 (1.06), 6.949 (1.11), 7.197 (2.10), 7.457 (0.90), 8.267 (2.10), 8.281 (2.03), 8.439 (0.90).

Example 01.04
2-cyclopropyl-1-{4-[(2-{[6-(2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (81.0 mg, approx. 186 μmol) and cyclopropylacetic acid (27.9 mg, 279 μmol), Example 01.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 10.0 mg of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=482 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.93), 0.011 (3.08), 0.014 (2.78), 0.023 (3.17), 0.026 (2.88), 0.037 (1.07), 0.330 (1.15), 0.340 (2.73), 0.344 (2.82), 0.350 (1.53), 0.355 (1.38), 0.360 (2.93), 0.364 (2.77), 0.375 (1.11), 0.854 (1.02), 2.154 (4.93), 2.171 (4.75), 2.238 (0.86), 2.242 (1.22), 2.247 (0.93), 2.277 (2.02), 2.290 (1.82), 2.310 (2.02), 2.434 (5.35), 2.441 (16.00), 2.580 (0.80), 2.584 (1.13), 2.589 (0.80), 3.372 (1.98), 3.383 (1.80), 3.407 (1.97), 3.426 (5.59), 6.852 (1.26), 6.865 (1.31), 7.109 (2.69), 7.370 (0.96), 8.181 (2.51), 8.194 (2.44), 8.356 (0.98).

Example 01.05
cyclobutyl{4-[(2-{[6-(2-methyl pyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (81.0 mg, approx. 186 μmol) and cyclobutanecarboxylic acid (27.9 mg, 279 μmol), Example 01.05 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 31.0 mg of the title compound.

LC-MS (Method 4): R_t=1.08 min; MS (ESIpos): m/z=482 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.862 (1.09), 1.884 (0.84), 1.889 (0.82), 2.052 (1.21), 2.061 (0.94), 2.075 (1.43), 2.083 (1.14), 2.100 (0.93), 2.106 (0.84), 2.123 (1.62), 2.128 (1.12), 2.145 (1.75), 2.169 (0.84), 2.174 (0.91), 2.322 (0.91), 2.327 (1.41), 2.332 (1.50), 2.337 (1.96), 2.352 (3.28), 2.518 (6.90), 2.525 (16.00), 2.539 (1.87), 2.665 (0.73), 2.669 (1.05), 2.673 (0.75), 3.305 (1.05), 3.473 (1.75), 3.485 (1.66), 3.500 (4.99), 6.930 (1.27), 6.944 (1.28), 7.188 (2.49), 8.262 (2.23), 8.275 (2.24), 8.438 (1.18), 8.451 (1.18).

Example 02.01
tert-butyl 4-[(2-{[6-(2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (83.8 mg, 1.23 mmol) and di-1H-imidazol-1-ylmethanethione (1.58 g, 90% purity, 8.00 mmol) in dichloromethane (50 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.80 g, 6.16 mmol) dissolved in dichloromethane (50 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(2-methoxypyridin-4-yl)benzene-1,2-diamine (1.78 g, 97% purity, 8.00 mmol) dissolved in dichloromethane (27 mL) was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (1.33 mL, 8.8 mmol) was added. The mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (0.47 mL, 3.1 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated ammonium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane. Aminophase-silicagel chromatography gave 585 mg of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.390 (1.33), 1.396 (16.00), 2.347 (0.86), 2.360 (1.27), 2.372 (0.94), 3.321 (7.45), 3.501 (1.68), 3.894 (5.54), 5.756 (0.92), 7.194 (0.84), 8.177 (0.60), 8.190 (0.57), 8.261 (0.75), 8.273 (0.74).

Example 02.02
cyclopropyl{4-[(2-{[6-(2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 6-(2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, 221 μmol) in DMF (8 mL) was added potassium carbonate (153 mg, 1.11 mmol), cyclopropanecarboxylic acid (57.1 mg, 664 μmol) and HATU (252 mg, 664 μmol). The mixture was stirred at room temperature for 16 h. Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane to give 73.0 mg (61% yield) of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=484 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.677 (1.07), 0.685 (2.44), 0.691 (1.47), 0.698 (1.20), 0.705 (2.94), 0.710 (2.22), 0.716 (2.52), 0.723 (2.46), 0.728 (2.97), 0.735 (1.36), 1.940 (0.61), 1.948 (0.65), 1.960 (1.10), 1.972 (0.61), 1.979 (0.56), 2.370 (1.02), 2.444 (1.02), 2.523 (1.00), 3.525 (5.78), 3.712 (0.90), 3.896 (16.00), 6.942 (1.34), 6.945 (1.41), 6.958 (1.42), 7.065 (0.72), 7.218 (2.61), 8.177 (2.02), 8.191 (1.93), 8.270 (2.35), 8.283 (2.26).

Example 02.03
3,3,3-trifluoro-1-{4-[(2-{[6-(2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-(2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100.0 mg, 221 μmol) and 3,3,3-trifluoropropanoic acid (85.0 mg, 664 μmol) Example 02.03. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 50.0 mg (39%) of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.375 (1.20), 2.388 (1.81), 2.400 (1.37), 2.415 (1.32), 2.523 (1.07), 3.463 (1.28), 3.477 (1.77), 3.487 (1.46), 3.499 (1.44), 3.513 (1.80), 3.528 (5.65), 3.601 (0.93), 3.628 (2.68), 3.656 (2.52), 3.683 (0.79), 3.896 (16.00), 6.935 (1.30), 6.948 (1.36), 6.951 (1.36), 7.213 (2.45), 8.178 (1.79), 8.191 (1.73), 8.268 (2.24), 8.282 (2.14).

Example 02.04
cyclobutyl{4-[(2-{[6-(2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, 221 μmol) and cyclobutanecarboxylic acid (66.5 mg, 664 μmol) Example 02.04. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 86.0 mg (70%) of the title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.737 (0.74), 1.841 (0.61), 1.862 (1.19), 1.885 (0.92), 1.889 (0.90), 1.912 (0.55), 2.045 (0.76), 2.054 (1.31), 2.063 (0.96), 2.069 (0.95), 2.076 (1.50), 2.085 (1.15), 2.100 (0.83), 2.104 (0.91), 2.126 (1.72), 2.131 (1.16), 2.147 (1.83), 2.152 (1.44), 2.171 (0.86), 2.177 (0.96), 2.354 (4.04), 2.366 (2.89), 2.523 (0.83), 3.301 (1.52), 3.308 (16.00), 3.322 (2.50), 3.341 (2.57), 3.474 (1.87), 3.487 (1.59), 3.499 (6.14), 6.925 (1.60), 6.928 (1.58), 6.938 (1.63), 6.941 (1.61), 7.062 (0.76), 7.204 (2.97), 7.309 (0.71), 7.465 (0.70), 8.177 (2.26), 8.190 (2.15), 8.261 (2.63), 8.274 (2.52).

Example 02.05
2-cyclopropyl-1-{4-[(2-{[6-(2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with 6-(2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, 221 μmol) and cyclopropylacetic acid (66.5 mg, 664 μmol) Example 02.05. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 69.0 mg (56%) of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.73), 0.011 (2.69), 0.014 (2.40), 0.023 (2.71), 0.026 (2.45), 0.037 (0.85), 0.329 (0.90), 0.339 (2.35), 0.343 (2.41), 0.349 (1.18), 0.354 (1.12), 0.359 (2.44), 0.364 (2.34), 0.374 (0.84), 0.855 (0.84), 2.151 (4.45), 2.168 (4.38), 2.279 (1.83), 2.291 (1.78), 2.309 (1.84), 2.436 (0.85), 3.370 (1.75), 3.404 (1.78), 3.425 (5.75), 3.809 (16.00), 6.846 (1.46), 6.859 (1.51), 6.976 (0.77), 7.123 (2.67), 7.222 (0.66), 7.379 (0.68), 8.090 (2.07), 8.104 (1.97), 8.177 (2.42), 8.191 (2.31).

Example 03.01
cyclopropyl{4-[(2-{[6-(5-fluoro-2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(5-fluoro-2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 239 μmol) and cyclopropanecarboxylic acid (30 μl, 95% purity, 360 μmol) Example 03.01. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=502 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.676 (1.05), 0.683 (2.38), 0.689 (1.42), 0.696 (1.18), 0.703 (2.86), 0.709 (2.14), 0.714 (2.45), 0.721 (2.40), 0.726 (2.85), 0.733 (1.30), 1.028 (0.98), 1.044 (1.01), 1.961 (1.06), 3.523 (5.42), 3.879 (16.00), 6.944 (1.46), 6.947 (1.39), 6.957 (1.54), 6.959 (1.56), 7.200 (2.45), 8.205 (2.04), 8.211 (1.91), 8.270 (2.36), 8.283 (2.22).

Example 03.02
3,3,3-trifluoro-1-{4-[(2-{[6-(5-fluoro-2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(5-fluoro-2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 239 μmol) and 3,3,3-trifluoropropanoic acid (32 μl, 360 μmol) Example 03.02. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=544 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.856 (0.76), 1.028 (1.39), 1.044 (1.44), 2.371 (1.33), 2.384 (2.03), 2.397 (1.53), 2.413 (1.49), 2.425 (1.97), 2.437 (1.43), 3.461 (1.47), 3.473 (1.98), 3.485 (1.64), 3.496 (1.61), 3.511 (2.06), 3.526 (5.91), 3.606 (0.95), 3.633 (2.72), 3.661 (2.55), 3.879 (16.00), 6.937 (1.47), 6.940 (1.53), 6.953 (1.58), 7.196 (2.70), 8.205 (1.96), 8.211 (1.84), 8.269 (2.46), 8.282 (2.33).

Example 03.03
cyclobutyl{4-[(2-{[6-(5-fluoro-2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(5-fluoro-2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (100 mg, 231 μmol) and cyclobutanecarboxylic acid (34 μl, 98% purity, 350 μmol) Example 03.03. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.831 (1.05), 0.858 (1.79), 0.936 (0.93), 0.953 (0.94), 1.239 (1.12), 1.396 (1.84), 1.728 (1.02), 1.863 (1.15), 2.054 (1.23), 2.076 (1.41), 2.085 (1.18), 2.126 (1.59), 2.147 (1.68), 2.177 (0.91), 2.355 (3.84), 2.539 (4.86), 2.730 (5.68), 2.889 (6.74), 3.323 (2.68), 3.342 (2.54), 3.474 (1.83), 3.501 (5.83), 3.879 (16.00), 5.752 (1.24), 6.928 (1.49), 6.944 (1.58), 7.192 (2.44), 7.952 (0.90), 8.201 (2.14), 8.208 (2.06), 8.261 (2.55), 8.275 (2.46).

Example 03.04
2-cyclopropyl-1-{4-[(2-{[6-(5-fluoro-2-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with 6-(5-fluoro-2-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (100 mg, 231 μmol) and cyclopropylacetic acid (33 μl, 97% purity, 350 μmol) Example 03.04. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.011 (2.48), 0.014 (2.36), 0.023 (2.63), 0.027 (2.39), 0.037 (0.84), 0.330 (0.81), 0.339 (2.14), 0.343 (2.28), 0.350 (1.10), 0.354 (1.05), 0.360 (2.32), 0.364 (2.27), 0.374 (0.81), 0.744 (1.35), 0.766 (1.05), 0.771 (2.20), 0.850 (1.44), 0.855 (0.86), 0.866 (1.56), 1.152 (1.33), 1.310 (1.98), 2.152 (4.27), 2.168 (4.16), 2.279 (1.90), 2.309 (1.99), 3.425 (5.80), 3.793 (16.00), 5.665 (0.69), 6.848 (1.50), 6.864 (1.60), 7.111 (2.58), 8.115 (2.21), 8.121 (2.10), 8.179 (2.49), 8.192 (2.37).

Example 04.01
tert-butyl 4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of N-[4-(chloromethyl)pyridin-2-yl]-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-amine (870 mg, 2.38 mmol) in DMF (20 mL) was added potassium carbonate (1.64 g, 11.9 mmol) and tert-butyl piperazine-1-carboxylate (685 mg, 97% purity, 3.57 mmol). The mixture was stirred at r.t. for 14 h. Water was added, and a solid precipitated and was collected by filtration. Ethyl acetate/methanol (1:1) was added to the solid and the mixture was stirred for 15 minutes. Solids were removed by filtration, and the solution was concentrated in vacuum. Silicagel chromatography gave 800 mg (59% yield) of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.039 (1.85), 1.056 (4.16), 1.074 (2.09), 1.396 (16.00), 2.349 (0.92), 2.361 (1.36), 2.374 (0.98), 2.730 (2.27), 2.889 (2.88), 3.312 (7.39), 3.427 (0.85), 3.439 (0.91), 3.444 (0.91), 3.457 (0.91), 3.499 (1.84), 3.905 (4.57), 4.320 (0.59), 4.332 (1.12), 4.346 (0.55), 6.913 (0.54), 6.916 (0.54), 6.926 (0.55), 6.930 (0.55), 7.189 (0.68), 7.357 (0.76), 7.369 (0.80), 8.248 (1.27), 8.254 (0.96), 8.260 (1.22), 8.268 (0.86), 8.434 (1.93).

Example 04.02
3,3,3-trifluoro-1-{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 191 μmol) and 3,3,3-trifluoropropanoic acid (26 μl, 98% purity, 290 μmol) Example 04.02. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.40 (dt, 4H), 3.43-3.55 (m, 6H), 3.63 (q, 2H), 3.90 (s, 3H), 6.92 (d, 1H), 7.15-7.85 (m, 5H), 8.19-8.30 (m, 2H), 8.42 (s, 1H), 10.63 (br s, 1H), 12.15 (br s, 1H).

Example 04.03
cyclopropyl{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 191 μmol) and cyclopropanecarboxylic acid (24 μl, 95% purity, 290 μmol) Example 04.03. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIneg): m/z=482 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.685 (1.11), 0.690 (0.81), 0.698 (0.66), 0.705 (1.33), 0.710 (1.10), 0.717 (1.25), 0.723 (1.24), 0.729 (1.40), 0.735 (0.72), 1.396 (16.00), 3.523 (2.74), 3.907 (5.91), 5.752 (2.33), 6.935 (0.73), 6.949 (0.74), 7.207 (1.16), 7.358 (1.03), 7.370 (1.08), 8.249 (1.28), 8.261 (1.65), 8.278 (1.02), 8.435 (2.20).

Example 04.04
cyclobutyl{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 191 μmol) and cyclobutanecarboxylic acid (28 μl, 97% purity, 290 μmol) Example 04.04. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=1.66-1.78 (m, 1H), 1.80-1.95 (m, 1H), 1.99-2.21 (m, 4H), 2.29-2.41 (m, 4H), 3.32 (br d, 3H), 3.42-3.53 (m, 4H), 3.84-3.94 (m, 3H), 6.91 (d, 1H), 7.12-7.81 (m, 5H), 8.25 (dd, 2H), 8.42 (s, 1H), 10.62 (br s, 1H), 12.16 (br s, 1H).

Example 04.05
2-cyclopropyl-1-{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 191 μmol) and cyclopropylacetic acid (26 μl, 98% purity, 290 μmol) Example 04.05. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.09 (q, 2H), 0.37-0.47 (m, 2H), 0.90-0.96 (m, 1H), 2.24 (d, 2H), 2.32-2.43 (m, 4H), 3.39-3.62 (m, 6H), 3.90 (s, 3H), 6.92 (d, 1H), 7.15-7.30 (m, 2H), 7.32-7.84 (m, 3H), 8.18-8.32 (m, 2H), 8.42 (s, 1H), 10.63 (br s, 1H), 12.15 (br s, 1H).

Example 04.06
1-{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-2,2-dimethylpropan-1-one

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (80.0 mg, approx. 152 μmol) and 2,2-dimethylpropanoic acid (26 μl, 230 μmol) Example 04.06. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 23.0 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=500 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.184 (16.00), 2.373 (0.92), 2.385 (1.40), 2.397 (0.98), 3.497 (2.02), 3.572 (1.14), 3.906 (3.59), 6.926 (0.61), 6.929 (0.59), 6.939 (0.59), 6.942 (0.58), 7.358 (0.63), 7.370 (0.67), 8.248 (1.17), 8.260 (1.99), 8.273 (0.88), 8.435 (1.89).

The Example compounds in the following table 7 were synthesized in analogy to the preparation of Example 117.02, followed by purification by preparative reverse phase HPLC or silicagel chromatography.

TABLE 7

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Example
Starting materials (SM):

Example 04.07

embedded image

{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-

yl)methyl]piperazin-1-yl}[1-(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.11 min; MS (ESIneg): m/z = 550 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.165 (0.71), 1.181 (3.07), 1.236

(0.50), 1.275 (1.89), 1.287 (3.70), 1.306 (1.28), 2.421 (3.75), 2.518 (1.58),

2.523 (1.15), 3.520 (6.95), 3.595 (2.05), 3.905 (16.00), 6.925 (2.15), 6.929

(2.18), 6.939 (2.17), 6.942 (2.23), 7.198 (2.33), 7.259 (0.60), 7.359 (2.74),

7.371 (2.85), 8.248 (5.17), 8.260 (6.22), 8.275 (3.31), 8.435 (7.74), 10.670

(0.75), 12.188 (0.65).

SM: Compound 04.07 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 04.08

embedded image

((1RS)-2,2-difluorocyclopropyl){4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.04 min; MS (ESIneg): m/z = 518 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.801 (0.43), 1.813 (0.58), 1.830

(0.66), 1.842 (0.69), 1.863 (0.52), 1.877 (0.47), 1.883 (0.68), 1.897 (0.86),

1.916 (0.80), 1.929 (0.52), 2.327 (0.55), 2.332 (0.48), 2.345 (0.78), 2.361

(0.82), 2.394 (1.30), 2.405 (1.54), 2.422 (1.03), 2.518 (1.51), 2.523 (1.37),

2.535 (0.49), 2.539 (0.56), 2.544 (0.49), 3.105 (0.55), 3.126 (0.60), 3.134

(0.69), 3.140 (0.69), 3.154 (0.61), 3.159 (0.73), 3.167 (0.62), 3.187 (0.52),

3.491 (0.40), 3.525 (7.20), 3.547 (1.50), 3.563 (1.24), 3.570 (0.82), 3.580

(0.96), 3.587 (0.97), 3.596 (0.96), 3.650 (0.76), 3.660 (0.68), 3.667 (0.68),

3.675 (0.46), 3.684 (0.40), 3.693 (0.41), 3.906 (16.00), 6.931 (2.09), 6.934

(2.07), 6.944 (2.06), 6.948 (2.07), 7.203 (2.56), 7.266 (0.60), 7.359 (2.69),

7.371 (2.76), 8.248 (4.80), 8.260 (4.55), 8.264 (3.54), 8.278 (3.08), 8.435

(7.33), 10.679 (0.66), 12.195 (0.59).

SM: Compound 04.07 and (1RS)-2,2-difluorocyclopropanecarboxylic acid

Example 04.09

embedded image

2-hydroxy-1-{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-2-methylpropan-1-one

LC-MS (Method 2): R_t= 0.95 min; MS (ESIneg): m/z = 500 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.303 (16.00), 1.323 (0.48), 2.399

(1.43), 3.495 (2.84), 3.905 (10.51), 6.921 (0.89), 6.924 (0.89), 6.934 (0.88),

6.937 (0.90), 7.243 (0.92), 7.247 (0.83), 7.264 (0.77), 7.268 (0.78), 7.359

(1.66), 7.371 (1.69), 8.246 (2.21), 8.255 (1.63), 8.258 (2.27), 8.267 (1.36),

8.433 (3.33).

SM: Compound 04.07 and 2-hydroxy-2-methylpropanoic acid

Example 04.10

embedded image

2-methoxy-1-{4-[(2-{[6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-2-methylpropan-1-one

LC-MS (Method 2): R_t= 1.06 min; MS (ESIneg): m/z = 514 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.315 (16.00), 2.419 (1.01), 2.518

(0.46), 3.130 (11.79), 3.501 (2.99), 3.905 (6.47), 6.927 (0.91), 6.930 (0.91),

6.941 (0.89), 6.943 (0.92), 7.197 (0.90), 7.358 (1.03), 7.370 (1.07), 8.247

(1.92), 8.260 (3.09), 8.274 (1.38), 8.435 (3.04).

SM: Compound 04.07 and 2-methoxy-2-methylpropanoic acid

Example 05.01
3,3,3-trifluoro-1-(4-{[2-({6-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

To a stirred solution of crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[3-(2,2,2-trifluoroethoxy)pyridin-4-yl]-1H-benzimidazol-2-amine hydrochloride (159 mg, approx. 229 μmol) in DMF (5 mL) was added sodium bicarbonate (115 mg, 1.37 mmol), 3,3,3-trifluoropropanoic acid (31 μl, 98% purity, 340 μmol) and HATU (130 mg, 343 μmol). The mixture was stirred at room temperature for 16 h. Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with a mixture of dichloromethane and hexane to give 43 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=594 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.41 (dt, 4H), 3.42-3.56 (m, 6H), 3.66 (q, 2H), 4.91 (q, 2H), 6.90-6.98 (m, 1H), 7.14-7.58 (m, 4H), 7.67 (br s, 1H), 8.28 (d, 1H), 8.35 (d, 1H), 8.52 (s, 1H), 12.20 (br s, 1H), 12.64-13.71 (m, 1H).

Example 06.01
3,3,3-trifluoro-1-(4-{[2-({6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, approx. 141 μmol) and 3,3,3-trifluoropropanoic acid (54.0 mg, 422 μmol) Example 06.01. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 35.0 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ES+): m/z=554 [M+1]

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.227 (16.00), 1.242 (15.73), 2.323 (0.69), 2.327 (0.94), 2.331 (0.71), 2.373 (3.11), 2.386 (4.75), 2.398 (3.61), 2.414 (3.40), 2.427 (4.67), 2.439 (3.31), 2.518 (3.60), 2.523 (2.54), 2.540 (1.57), 2.665 (0.67), 2.669 (0.92), 2.673 (0.67), 3.462 (3.42), 3.476 (4.71), 3.487 (3.91), 3.499 (3.82), 3.512 (5.03), 3.525 (15.50), 3.606 (2.34), 3.634 (6.70), 3.661 (6.28), 3.688 (2.02), 4.575 (1.11), 4.590 (2.83), 4.605 (3.87), 4.621 (2.86), 4.636 (1.12), 5.756 (9.43), 6.924 (3.82), 6.927 (3.70), 6.937 (3.75), 6.940 (3.88), 7.202 (6.21), 7.303 (1.19), 7.370 (2.14), 7.787 (0.87), 8.222 (8.15), 8.234 (7.52), 8.270 (5.42), 8.283 (5.13), 8.398 (12.48), 10.647 (1.53), 12.147 (3.07).

Example 06.02
cyclopropyl(4-{[2-({6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, approx. 141 μmol) and cyclopropanecarboxylic acid (36.3 mg, 422 μmol) Example 06.02. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 35.0 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ES+): m/z=512 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.63-0.77 (m, 4H), 1.24 (br d, 6H), 1.91-2.02 (m, 1H), 2.30-2.47 (m, 4H), 3.42-3.80 (m, 6H), 4.61 (dt, 1H), 6.95 (d, 1H), 7.22 (s, 1H), 7.25-7.85 (m, 4H), 8.24 (d, 1H), 8.29 (d, 1H), 8.40 (s, 1H), 10.66 (br s, 1H), 12.16 (br s, 1H).

Example 06.03
2-cyclopropyl-1-(4-{[2-({6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)ethanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[3-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, approx. 141 μmol) and cyclopropylacetic acid (42.2 mg, 422 μmol) Example 06.03. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 21.0 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ES+): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.06-0.15 (m, 2H), 0.39-0.49 (m, 2H), 0.88-1.01 (m, 1H), 1.24 (br d, 6H), 2.25 (d, 2H), 2.33-2.45 (m, 4H), 3.41-3.57 (m, 6H), 4.61 (dt, 1H), 6.94 (dd, 1H), 7.21 (s, 1H), 7.25-7.86 (m, 4H), 8.23 (d, 1H), 8.28 (d, 1H), 8.40 (s, 1H), 10.65 (br s, 1H), 12.15 (s, 1H).

Example 07.01
cyclopropyl{4-[(2-{[6-(5-methoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 6-(5-methoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (65.0 mg, 151 μmol) in dichloromethane (1.0 mL, 16 mmol) was added triethylamine (50 μl, 360 μmol) and cyclopropanecarbonyl chloride (17 μl, 190 μmol).

The mixture was stirred at r.t. for 1 h. A saturated sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with diethylether to give 40 mg (53% yield) of the title compound.

LC-MS (Method 5): R_t=2.21 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.59-0.82 (m, 4H), 1.95 (m, 1H), 2.37 (m, 2H), 2.45 (m, 5H), 3.52 (m, 4H), 3.70 (m, 2H), 3.85 (s, 3H), 6.94 (m, 1H), 7.18-7.33 (m, 3H), 7.45 (m, 1H), 7.66 (s, 1H), 8.27 (m, 1H), 10.70 (s, 1H), 12.10 (s, 1H). ¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.9, 10.2, 23.1, 41.5, 44.8, 52.4, 53.0, 56.4, 60.6, 110.5, 116.5, 121.6, 123.7, 127.4, 133.9, 138.2, 146.9, 149.4, 150.2, 150.4, 150.5, 153.6, 170.9.

Example 07.02
3,3,3-trifluoro-1-{4-[(2-{[6-(5-methoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(5-methoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (180 mg, approx. 309 μmol) and 3,3,3-trifluoropropanoic acid (35 μl, 400 μmol) Example 07.02. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 100.0 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=540 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.35-2.48 (m, 7H), 3.43-3.57 (m, 6H), 3.65 (q, 2H), 3.86 (s, 3H), 6.94 (d, 1H), 7.09-7.89 (m, 5H), 8.20-8.35 (m, 2H), 10.66 (br s, 1H), 12.17 (br s, 1H).

Example 07.03
cyclobutyl{4-[(2-{[6-(5-methoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 6-(5-methoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (100 mg, 233 μmol) in tetrahydrofurane (1.0 mL). was added triethylamine (100 μl, 720 μmol) and cyclobutanecarbonyl chloride (35 μl, 310 μmol). The mixture was stirred at r.t. for 1 h. A saturated sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 62 mg (52% yield) of the title compound.

LC-MS (Method 5): R_t=2.33 min; MS (ESIpos): m/z=512 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.72 (m, 1H), 1.87 (m, 1H), 1.98-2.22 (m, 4H), 2.34 (m, 4H), 2.45 (s, 3H), 3.48 (m, 4H), 3.85 (s, 3H), 7.12-7.33 (m, 3H), 7.33-7.90 (m, 2H), 8.22-8.34 (m, 2H), 10.66 (s, 1H), 12.17 (s, 1H).

¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=17.3, 23.1, 24.5, 36.2, 41.1, 44.3, 52.4, 52.9, 56.4, 60.6, 110.4, 116.4, 123.6, 134.0, 138.1, 146.9, 149.4, 150.4, 153.6, 171.9.

Example 07.04
2-cyclopropyl-1-{4-[(2-{[6-(5-methoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

To a stirred solution of 6-(5-methoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (100 mg, 233 μmol) in tetrahydrofurane (1.0 mL). was added triethylamine (100 μl, 720 μmol) and cyclopropylacetyl chloride (45 μl, 440 μmol). The mixture was stirred at r.t. for 1 h. A saturated sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with pentane to give 65 mg (55% yield) of the title compound

LC-MS (Method 5): R_t=2.30 min; MS (ESIpos): m/z=512 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.10 (m, 2H), 0.44 (m, 2H), 0.94 (m, 1H), 2.24 (d, 2H), 2.37 (m, 4H), 2.45 (s 3H), 3.45 (m, 2H), 3.50 (m, 4H), 3.85 (s, 3H), 6.92 (m, 1H), 7.09-7.32 (m, 3H), 7.32-7.88 (m, 2H), 8.17-8.31 (m, 2H), 10.66 (s, 1H), 12.16 (s, 1H).

¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=4.2, 7.2, 23.1, 37.3, 40.9, 45.0, 52.3, 53.0, 56.4, 60.6, 110.4, 116.4, 123.6, 134.0, 138.1, 146.9, 149.4, 150.3, 150.41, 150.43, 153.6, 170.2.

Example 08.01
4-{2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}-5-methoxy-N,N-dimethylpyridine-2-carboxamide

embedded image

To a stirred solution of 4-bromo-5-methoxy-N,N-dimethylpyridine-2-carboxamide (206 mg, 796 μmol) and cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (200 mg, 398 μmol) in dioxane (2.5 mL) and water (500 μl) was added sodium carbonate (173 mg, 1.63 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(65.0 mg, 79.6 μmol). The mixture was heated to reflux for 16 h. Methanol was added, the mixture was filtered and the solvent was removed in vacuum. Silicagel chromatography gave 130 mg (57% yield) of the title compound.

LC-MS (Method 5): R_t=2.67 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.675 (1.04), 0.682 (2.25), 0.688 (1.57), 0.695 (1.21), 0.702 (2.75), 0.708 (1.68), 0.710 (1.61), 0.716 (2.35), 0.723 (2.39), 0.728 (2.89), 0.735 (1.48), 1.089 (0.51), 1.934 (0.60), 1.941 (0.65), 1.945 (0.51), 1.953 (1.05), 1.959 (0.57), 1.965 (0.63), 1.972 (0.58), 2.373 (0.97), 2.443 (0.97), 2.490 (1.79), 2.495 (3.91), 2.500 (5.61), 2.505 (4.18), 2.509 (2.05), 3.019 (8.33), 3.078 (9.10), 3.309 (16.00), 3.521 (5.24), 3.701 (0.85), 3.970 (12.24), 6.933 (1.42), 6.936 (1.45), 6.946 (1.45), 6.950 (1.47), 7.208 (2.35), 7.278 (0.51), 7.297 (0.57), 7.562 (6.03), 7.567 (0.70), 8.262 (2.17), 8.277 (2.12), 8.416 (5.24), 10.663 (0.61).

Example 09.01
1-{4-[(2-{[6-(5-ethoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of 6-(5-ethoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (80.0 mg, 180 μmol) in dichloromethane (1.0 mL) was added triethylamine (200 μl, 1.4 mmol) and 3,3,3-trifluoropropanoyl chloride (46 μl, 450 μmol). The mixture was stirred at r.t. for 0.5 h. A saturated sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 23 mg (23% yield) of the title compound.

LC-MS (Method 5): R_t=2.50 min; MS (ESIpos): m/z=554 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.089 (0.47), 1.175 (0.68), 1.193 (0.46), 1.232 (0.95), 1.270 (3.65), 1.288 (7.67), 1.306 (4.05), 1.355 (0.43), 2.393 (2.80), 2.404 (2.38), 2.435 (3.69), 2.446 (16.00), 2.495 (9.42), 2.499 (11.12), 2.502 (8.84), 3.306 (14.41), 3.373 (1.00), 3.390 (1.51), 3.477 (3.06), 3.512 (3.28), 3.531 (7.20), 3.596 (1.20), 3.623 (3.28), 3.651 (3.20), 3.678 (1.08), 4.079 (1.38), 4.096 (4.11), 4.113 (4.09), 4.131 (1.32), 5.747 (1.42), 6.928 (2.04), 6.942 (2.08), 7.205 (3.50), 7.242 (4.75), 7.287 (1.55), 7.308 (1.94), 7.442 (1.38), 7.461 (1.10), 7.694 (1.44), 8.249 (5.15), 8.266 (2.72), 8.279 (2.50).

Example 09.02
cyclopropyl{4-[(2-{[6-(5-ethoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(5-ethoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (80.0 mg, 180 μmol) and cyclopropanecarbonyl chloride (21 μl, 230 μmol), Example 09.02 was prepared analogously to the procedure for the preparation of Example 09.01.

Yield: 54.0 mg (56%) of the title compound.

LC-MS (Method 5): R_t=2.37 min; MS (ESIpos): m/z=512 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.444 (1.86), 2.490 (0.86), 2.495 (1.97), 2.500 (2.80), 2.505 (1.97), 2.509 (0.86), 3.302 (16.00), 8.245 (0.54).

Example 09.03
2-cyclopropyl-1-{4-[(2-{[6-(5-ethoxy-2-methyl pyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

To a stirred solution of 6-(5-ethoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (80.0 mg, 180 μmol) in dichloromethane (1.0 mL) was added triethylamine (200 μl, 1.4 mmol) and cyclopropylacetyl chloride (27.8 mg, 234 μmol) The mixture was stirred at r.t. for 0.5 h. Further cyclopropylacetyl chloride (10 mg, 80 μmol) was added and the mixture was stirred at r.t. for 0.5 h. A saturated sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 65.0 mg (69% yield) of the title compound.

LC-MS (Method 5): R_t=2.50 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.011 (1.54), 0.013 (1.62), 0.025 (1.73), 0.036 (0.52), 0.329 (0.44), 0.338 (1.28), 0.343 (1.40), 0.348 (0.77), 0.353 (0.73), 0.358 (1.41), 0.363 (1.49), 0.374 (0.48), 0.855 (0.51), 1.182 (1.46), 1.200 (2.82), 1.216 (1.51), 2.148 (2.73), 2.166 (2.68), 2.278 (1.61), 2.292 (1.77), 2.307 (1.64), 2.357 (8.76), 2.410 (1.78), 2.414 (2.31), 2.419 (1.76), 3.232 (16.00), 3.367 (1.54), 3.418 (4.57), 3.988 (0.78), 4.005 (2.30), 4.022 (2.23), 4.039 (0.70), 5.663 (0.89), 6.834 (1.15), 6.847 (1.16), 7.118 (2.10), 7.145 (1.58), 7.215 (0.52), 8.158 (3.14), 8.172 (1.66), 8.185 (1.51), 10.551 (0.47), 12.052 (0.50).

Example 09.04
cyclobutyl{4-[(2-{[6-(5-ethoxy-2-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(5-ethoxy-2-methylpyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (80.0 mg, 180 μmol) and cyclobutanecarbonyl chloride (27 μl, 230 μmol), Example 09.04 was prepared analogously to the procedure for the preparation of Example 09.01

Yield: 71.0 mg (75%).

LC-MS (Method 5): R_t=2.53 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.267 (1.48), 1.284 (2.78), 1.301 (1.63), 1.711 (0.45), 1.735 (0.56), 1.858 (0.66), 1.880 (0.67), 1.903 (0.41), 2.051 (1.03), 2.072 (1.23), 2.101 (0.84), 2.123 (1.25), 2.146 (1.40), 2.169 (0.82), 2.349 (3.71), 2.443 (6.82), 2.495 (2.34), 2.499 (2.58), 3.272 (0.47), 3.314 (16.00), 3.331 (3.28), 3.490 (4.38), 4.072 (0.74), 4.090 (1.93), 4.108 (1.86), 4.124 (0.67), 6.910 (1.20), 6.922 (1.16), 7.198 (2.03), 7.229 (1.66), 7.299 (0.65), 8.243 (2.55), 8.253 (1.57), 8.266 (1.31), 12.130 (0.48).

Example 10.01
cyclopropyl{4-[(2-{[6-(2-methoxy-3-methylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (200 mg, 398 μmol) and 4-iodo-2-methoxy-3-methylpyridine (130 mg, 522 μmol), Example 10.01 was prepared analogously to the procedure for the preparation of Example 08.01.

Yield: 125 mg (62%) of the title compound.

LC-MS (Method 5): R_t=2.96 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.70 (m, 4H), 1.94 (m, 1H), 2.13 (s, 3H), 2.40 (m, 4H), 3.51 (m, 4H), 3.69 (s, 2H), 3.92 (s, 3H), 6.83-6.97 (m, 2H), 6.94 (s, 1H), 7.21 (s, 1H), 7.26-7.68 (m, 2H), 8.01 (d, 1H), 8.27 (d, 1H), 10.66 (s, 1H), 12.17 (s, 1H). 13C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.9, 10.2, 12.9, 41.6, 44.8, 52.4, 53.1, 53.3, 60.6, 110.4, 116.4, 118.7, 142.9, 146.9, 149.4, 150.3, 153.6, 162.2, 170.9.

Example 11.01
cyclopropyl(4-{[2-({6-[3-methyl-2-(propan-2-yloxy)pyridin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (150 mg, 299 μmol) and 4-iodo-3-methyl-2-(propan-2-yloxy)pyridine (200 mg, 722 μmol) Example 11.01 was prepared analogously to the procedure for the preparation of Example 08.01.

Yield: 72 mg (46%) of the title compound.

LC-MS (Method 5): R_t=3.26 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.71 (m, 4H), 1.33 (d, 6H), 1.94 (m, 1H), 2.10 (s, 3H), 2.40 (m, 4H), 3.51 (s, 4H), 3.69 (s, 2H), 5.31 (quin, 1H), 6.84 (d, 1H), 6.93 (d, 1H), 7.01 (s, 1H), 7.22 (s, 1H), 7.26-7.72 (m, 2H), 7.98 (d, 1H), 8.27 (d, 1H), 10.66 (s, 1H), 12.17 (s, 1H).

¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.9, 10.2, 13.0, 22.1, 41.6, 44.8, 52.4, 53.1, 60.6, 67.4, 110.4, 116.4, 117.2, 118.2, 143.0, 146.9, 149.4, 150.3, 151.8, 153.6, 161.5, 170.9.

Example 12.01
tert-butyl 4-[(2-{[6-(6-methylpyridin-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 2-bromo-6-methylpyridine (225 mg, 1.31 mmol), Example 12.01 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 3.20 mg (1%) of the title compound.

LC-MS (Method 4): R_t=1.34 min; MS (ESIpos): m/z=500 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.395 (16.00), 2.358 (1.24), 2.537 (5.24), 3.335 (10.11), 8.250 (0.85), 8.264 (0.87).

Example 12.02
cyclopropyl{4-[(2-{[6-(6-methylpyridin-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(6-methylpyridin-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (190 mg, approx. 218 μmol) and cyclopropanecarboxylic acid (28.1 mg, 327 μmol), Example 12.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 7.00 mg of the title compound.

LC-MS (Method 4): R_t=1.12 min; MS (ESIpos): m/z=468 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.679 (1.12), 0.686 (2.60), 0.691 (1.55), 0.698 (1.20), 0.705 (3.15), 0.710 (2.60), 0.715 (2.83), 0.722 (2.58), 0.727 (3.09), 0.734 (1.37), 1.968 (1.12), 2.322 (1.26), 2.327 (1.75), 2.332 (1.29), 2.365 (1.20), 2.518 (7.04), 2.523 (4.67), 2.538 (16.00), 2.665 (1.20), 2.669 (1.69), 2.674 (1.14), 3.523 (5.84), 3.708 (1.12), 6.935 (1.32), 6.951 (1.35), 7.115 (1.26), 7.136 (1.32), 7.193 (2.20), 7.721 (1.12), 8.260 (2.75), 8.273 (2.43), 10.680 (1.55).

Example 12.03
2-cyclopropyl-1-{4-[(2-{[6-(6-methylpyridin-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(6-methylpyridin-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (190 mg, approx. 218 μmol) and cyclopropylacetic acid (32.7 mg, 327 μmol), Example 12.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 23.0 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=500 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: −0.011 (0.96), 0.000 (3.41), 0.012 (3.56), 0.026 (1.10), 0.319 (1.03), 0.329 (2.70), 0.333 (2.81), 0.339 (1.72), 0.349 (2.99), 0.353 (2.84), 0.364 (1.07), 0.843 (1.05), 0.871 (1.10), 0.893 (1.97), 0.909 (2.22), 1.011 (15.89), 2.004 (0.87), 2.143 (4.55), 2.159 (4.41), 2.231 (1.33), 2.297 (2.95), 2.427 (7.88), 2.441 (16.00), 2.573 (1.14), 3.360 (2.76), 3.412 (6.84), 4.098 (1.42), 6.832 (1.71), 6.845 (1.71), 7.019 (1.46), 7.040 (1.56), 7.089 (3.00), 7.622 (1.58), 7.690 (1.17), 8.159 (2.97), 8.172 (2.76).

Example 13.01
tert-butyl 4-[(2-{[6-(6-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (31.6 mg, 465 μmol) and di-1H-imidazol-1-ylmethanethione (436 mg, 95% purity, 2.32 mmol) in dichloromethane (20 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (679 mg, 2.32 mmol) dissolved in dichloromethane (10 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(6-methoxypyridin-3-yl)benzene-1,2-diamine (500 mg, 2.32 mmol), dissolved in dichloromethane (10 mL) was added and the mixture was stirred at r.t. for 65 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (720 μl, 4.7 mmol) was added. The mixture was stirred at r.t. for 14 h. Sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. Silicagel chromatography followed by aminophase-silicagel chromatography gave 180 mg of the title compound.

LC-MS (Method 2): R_t=1.36 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.394 (16.00), 2.356 (1.33), 3.495 (1.72), 3.892 (8.10), 7.184 (0.91), 8.253 (0.83), 8.267 (0.81).

Example 13.02
cyclopropyl{4-[(2-{[6-(6-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(6-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (45.0 mg, 90% purity, 89.6 μmol) and cyclopropanecarboxylic acid (11 μl, 130 μmol) Example 13.02. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 20.0 mg (42%) of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=484 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.684 (2.14), 0.689 (1.34), 0.696 (1.07), 0.703 (2.58), 0.708 (2.25), 0.713 (2.36), 0.720 (2.21), 0.726 (2.54), 0.733 (1.19), 1.966 (0.92), 3.520 (4.95), 3.708 (1.11), 3.893 (16.00), 6.930 (1.35), 6.933 (1.38), 6.943 (1.35), 6.946 (1.37), 7.202 (2.29), 8.263 (2.10), 8.277 (2.00), 10.649 (1.63).

Example 13.03
3,3,3-trifluoro-1-{4-[(2-{[6-(6-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-(6-methoxypyrid in-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, 90% purity, 219 μmol) and 3,3,3-trifluoropropanoic acid (29 μl, 330 μmol) Example 13.03. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 27.0 mg (21%) of the title compound.

LC-MS (Method 1): R_t=0.84 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 3.335 (16.00), 3.639 (1.58), 3.667 (1.48), 3.893 (12.15), 7.198 (1.44), 8.262 (1.48), 8.276 (1.40), 10.647 (1.11).

Example 14.01
cyclobutyl{4-[(2-{[6-(4-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(4-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (101 mg, approx. 167 μmol) cyclobutanecarboxylic acid (25.2 mg, 251 μmol), Example 14.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.147 (0.84), 1.163 (0.83), 1.260 (1.55), 1.814 (0.98), 1.840 (2.06), 1.853 (1.91), 1.864 (2.70), 1.874 (1.82), 1.891 (1.91), 1.897 (1.16), 1.914 (2.38), 1.935 (4.04), 1.941 (1.71), 1.957 (2.98), 1.962 (2.68), 1.979 (1.50), 1.984 (1.80), 2.007 (0.95), 2.038 (0.48), 2.081 (1.45), 2.090 (1.66), 2.097 (1.55), 2.102 (2.64), 2.112 (4.35), 2.121 (3.05), 2.127 (2.98), 2.133 (4.55), 2.142 (3.27), 2.155 (1.89), 2.164 (1.47), 2.178 (0.46), 2.240 (0.49), 2.281 (5.27), 2.287 (6.09), 2.298 (11.36), 2.304 (13.23), 2.309 (13.78), 2.325 (9.16), 2.333 (5.73), 2.349 (3.31), 2.356 (3.86), 2.373 (1.02), 2.378 (1.40), 2.627 (4.15), 3.173 (0.82), 3.196 (2.93), 3.216 (4.35), 3.240 (5.88), 3.255 (6.54), 3.266 (4.60), 3.417 (16.00), 3.532 (5.49), 3.919 (10.64), 6.918 (5.81), 6.921 (6.38), 6.931 (7.87), 6.934 (7.59), 6.942 (3.75), 7.006 (0.75), 7.130 (7.90), 7.360 (2.14), 7.379 (2.45), 7.528 (1.23), 7.668 (1.26), 8.281 (7.19), 8.295 (6.97), 8.473 (1.74), 8.539 (8.43).

Example 14.02
2-cyclopropyl-1-{4-[(2-{[6-(4-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(4-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (40.0 mg) and cyclopropylacetic acid (7.75 mg, 77.4 μmol), Example 14.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 3 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.078 (0.60), 0.103 (0.66), 0.155 (2.41), 0.167 (10.14), 0.181 (10.63), 0.193 (3.07), 0.545 (2.76), 0.556 (7.64), 0.559 (8.27), 0.565 (4.74), 0.572 (4:54), 0.577 (8.59), 0.580 (8.45), 0.592 (2.84), 0.888 (1.15), 1.004 (1.21), 1.016 (2.04), 1.024 (2.07), 1.036 (3.10), 1.049 (2.07), 1.053 (2.07), 1.261 (7.73), 1.293 (1.87), 1.612 (3.76), 1.896 (0.98), 2.178 (1.55), 2.252 (14.99), 2.269 (15.20), 2.286 (1.41), 2.360 (11.78), 2.371 (11.63), 3.397 (6.75), 3.454 (16.00), 3.526 (0.98), 3.589 (6.00), 3.930 (8.01), 6.944 (8.50), 6.955 (6.41), 7.006 (1.78), 7.093 (6.61), 7.286 (2.38), 7.364 (1.78), 7.529 (2.59), 7.641 (2.10), 7.749 (1.49), 8.290 (5.92), 8.303 (6.03), 8.485 (2.15), 8.536 (7.24), 12.328 (0.49).

Example 14.03
cyclopropyl{4-[(2-{[6-(4-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(4-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (101 mg) and cyclopropanecarboxylic acid (21.6 mg, 251 μmol), Example 14.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 21 mg of the title compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=484 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.746 (1.86), 0.756 (5.53), 0.763 (6.34), 0.773 (4.36), 0.776 (6.18), 0.784 (6.51), 0.792 (2.67), 0.974 (2.40), 0.982 (6.58), 0.989 (6.81), 0.994 (7.59), 1.001 (6.74), 1.011 (2.38), 1.261 (0.94), 1.678 (2.02), 1.690 (3.15), 1.698 (3.52), 1.709 (4.93), 1.721 (3.41), 1.729 (3.06), 1.741 (1.98), 2.179 (0.94), 2.315 (4.10), 2.375 (4.16), 3.425 (9.11), 3.430 (9.34), 3.577 (5.39), 3.848 (0.46), 3.893 (14.78), 3.938 (16.00), 6.914 (2.71), 6.931 (6.28), 6.939 (4.44), 6.944 (5.66), 6.946 (5.68), 6.953 (3.46), 7.006 (0.79), 7.131 (3.51), 7.153 (3.52), 7.282 (1.36), 7.289 (0.89), 7.334 (1.73), 7.338 (1.74), 7.354 (2.05), 7.358 (2.14), 7.386 (1.77), 7.390 (1.78), 7.406 (1.92), 7.410 (1.94), 7.518 (2.87), 7.528 (1.18), 7.538 (2.39), 7.646 (3.47), 7.649 (3.55), 7.709 (2.58), 7.730 (2.30), 7.774 (3.42), 8.286 (3.04), 8.294 (3.55), 8.298 (3.49), 8.306 (3.01), 8.458 (2.87), 8.472 (2.95), 8.490 (3.29), 8.505 (3.00), 8.549 (11.23), 12.369 (1.31).

Example 15.01
3,3,3-trifluoro-1-{4-[(2-{[6-(2-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(2-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (64.0 mg) and 3,3,3-trifluoropropanoic acid (21.4 mg, 167 μmol), Example 15.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 7 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=526 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.078 (0.71), 0.103 (0.68), 0.136 (1.07), 0.865 (0.84), 0.889 (0.97), 1.148 (0.94), 1.164 (0.94), 1.263 (6.56), 1.385 (1.10), 1.610 (1.29), 2.236 (0.71), 2.254 (0.68), 2.380 (8.05), 2.627 (2.04), 2.638 (0.65), 2.653 (0.94), 3.179 (2.72), 3.205 (7.89), 3.230 (7.76), 3.255 (2.72), 3.369 (4.53), 3.452 (7.14), 3.592 (4.33), 3.988 (10.67), 4.034 (16.00), 6.909 (3.36), 6.923 (3.56), 6.981 (1.13), 6.993 (1.36), 6.999 (1.45), 7.006 (3.26), 7.020 (1.84), 7.026 (1.78), 7.039 (1.65), 7.083 (3.81), 7.286 (1.58), 7.386 (1.49), 7.402 (2.52), 7.421 (1.68), 7.494 (2.39), 7.514 (1.71), 7.529 (2.07), 7.661 (1.78), 7.682 (1.97), 7.687 (3.91), 7.692 (3.88), 7.706 (3.46), 7.710 (3.52), 7.722 (3.26), 7.792 (2.20), 8.141 (1.33), 8.145 (1.42), 8.153 (1.42), 8.158 (1.42), 8.172 (1.87), 8.176 (1.91), 8.184 (2.00), 8.189 (1.84), 8.290 (3.01), 8.295 (3.04), 8.303 (3.04), 8.309 (2.55), 12.295 (0.97).

Example 15.02
2-cyclopropyl-1-{4-[(2-{[6-(2-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(2-methoxypyridin-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (69.0 mg) and cyclopropylacetic acid (18.1 mg, 180 μmol), Example 15.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 8 mg of the title compound.

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=498 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.102 (0.65), 0.148 (1.90), 0.161 (7.69), 0.175 (7.97), 0.187 (2.30), 0.539 (2.21), 0.549 (5.88), 0.553 (6.04), 0.559 (3.21), 0.565 (3.42), 0.570 (6.57), 0.573 (6.19), 0.585 (2.21), 0.888 (0.56), 0.996 (0.93), 1.009 (1.53), 1.029 (2.18), 1.045 (1.53), 1.055 (1.31), 1.074 (1.62), 1.092 (0.81), 1.252 (1.03), 1.261 (3.05), 1.385 (1.37), 1.692 (1.56), 2.038 (0.40), 2.180 (0.65), 2.240 (9.99), 2.257 (9.74), 2.366 (8.65), 2.627 (0.62), 2.653 (0.47), 3.380 (4.39), 3.445 (7.25), 3.592 (4.33), 3.988 (10.15), 4.033 (16.00), 6.923 (3.74), 6.937 (4.08), 6.977 (1.03), 6.994 (1.49), 7.006 (3.95), 7.017 (1.96), 7.022 (1.87), 7.035 (1.62), 7.088 (4.08), 7.283 (2.30), 7.384 (1.43), 7.400 (2.74), 7.416 (2.21), 7.487 (2.05), 7.507 (1.49), 7.528 (2.05), 7.669 (1.99), 7.689 (5.04), 7.707 (4.14), 7.712 (5.20), 7.785 (2.37), 8.147 (1.43), 8.160 (1.62), 8.168 (2.18), 8.172 (2.15), 8.180 (2.02), 8.184 (1.90), 8.285 (3.89), 8.298 (3.89), 12.308 (0.93).

Example 15.03
cyclopropyl{4-[(2-{[6-(2-methoxypyridin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (98.0 mg, 195 μmol) and 3-iodo-2-methoxypyridine (55.0 mg, 234 μmol), Example 15.03 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 25 mg (27%) of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=484 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.103 (0.41), 0.733 (2.96), 0.743 (8.63), 0.751 (9.56), 0.759 (6.48), 0.763 (8.81), 0.770 (9.50), 0.779 (3.48), 0.796 (0.49), 0.817 (0.55), 0.850 (0.77), 0.889 (0.63), 0.931 (0.43), 0.969 (3.87), 0.978 (10.63), 0.981 (7.92), 0.985 (10.21), 0.989 (11.20), 0.996 (9.58), 1.006 (3.20), 1.261 (3.48), 1.293 (0.83), 1.341 (0.51), 1.665 (1.82), 1.677 (3.26), 1.685 (3.77), 1.688 (2.90), 1.697 (5.73), 1.705 (2.73), 1.708 (3.32), 1.717 (2.90), 1.728 (1.52), 2.182 (0.53), 2.368 (7.13), 3.447 (16.00), 3.589 (11.71), 3.995 (5.02), 4.030 (7.62), 4.261 (0.61), 4.266 (0.63), 4.725 (0.57), 4.730 (0.59), 6.936 (6.44), 6.949 (6.18), 7.006 (3.56), 7.113 (0.75), 7.138 (10.67), 7.255 (1.26), 7.402 (3.69), 7.422 (4.31), 7.475 (0.63), 7.478 (0.75), 7.498 (1.36), 7.528 (1.72), 7.567 (0.61), 7.570 (0.65), 7.587 (0.61), 7.597 (0.65), 7.601 (0.71), 7.618 (0.57), 7.690 (6.83), 7.695 (6.93), 7.709 (6.99), 7.713 (6.97), 7.791 (1.48), 8.165 (3.65), 8.279 (0.93), 8.291 (9.15), 8.304 (8.36), 12.351 (0.75).

Example 16.01.01
tert-butyl 4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

A mixture of tert-butyl 4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate (30.0 mg, 59.0 μmol) and sodium acetate (5.32 mg, 64.9 μmol) in 1-propanol (1.5 mL) and water (750 μl) was heated to 120° C. in a microwave oven for 2 h. The solvent was removed in vacuum. Silicagel chromatography gave 21.0 mg (65% yield) of the title compound.

LC-MS (Method 1): R_t=0.87 min; MS (ESIpos): m/z=491 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.396 (16.00), 2.349 (1.01), 2.361 (1.47), 2.373 (1.07), 2.398 (5.11), 3.319 (8.20), 3.510 (1.82), 5.755 (0.73), 7.181 (0.87), 8.284 (0.56), 8.297 (0.53).

Example 16.01.02
3,3,3-trifluoro-1-{4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (3.55 g, approx. 7.65 mmol) in DMA (50 mL) was added DIPEA (8.0 mL, 46 mmol), 3,3,3-trifluoropropanoic acid (1.0 mL, 98% purity, 11 mmol) and PyBOP (5.97 g, 11.5 mmol). The mixture was stirred at room temperature for 1 h. Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with dichloromethane and methanol (10:1 mixture). The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane/hexane (1:1) to give 2.98 g of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.34-2.46 (m, 7H), 3.55 (s, 1H), 3.61 (s, 1H), 3.63 (s, 1H), 3.63-3.70 (m, 2H), 6.97 (d, 1H), 7.20 (s, 1H), 7.38-7.87 (m, 2H), 7.89-8.38 (m, 2H), 10.89 (br s, 1H), 12.46 (br s, 1H).

Example 16.01.03
2-cyclopropyl-1-{4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (70.0 mg, approx. 164 μmol) in DMF (2 mL) was added DIPEA (140 μl, 820 μmol), T3P (170 μl, 50% in DMF, 300 μmol) and cyclopropylacetic acid (28.5 mg, 98% purity, 279 μmol). The mixture was stirred at r.t. for 14 h. Water was added, and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane/hexane to give 22 mg of the title compound.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=473 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.67), 0.011 (2.35), 0.014 (2.15), 0.023 (2.39), 0.026 (2.27), 0.037 (0.82), 0.330 (0.86), 0.340 (2.10), 0.343 (2.18), 0.350 (1.13), 0.354 (1.02), 0.360 (2.28), 0.364 (2.15), 0.374 (0.85), 0.855 (0.77), 2.152 (4.09), 2.169 (3.96), 2.279 (1.57), 2.292 (1.57), 2.302 (1.79), 2.311 (16.00), 2.436 (0.85), 3.371 (1.52), 3.382 (1.41), 3.393 (1.37), 3.406 (1.51), 3.433 (4.88), 6.877 (1.10), 6.893 (1.16), 7.109 (2.32), 7.701 (0.68), 8.201 (1.61), 8.215 (1.57).

Example 16.01.04
cyclopropyl{4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (70.0 mg, approx. 164 μmol) in DMF (2 mL) was added DIPEA (140 μl, 820 μmol), T3P (170 μl, 50% in DMF, 300 μmol) and cyclopropanecarboxylic acid (23 μl, 98% purity, 280 μmol). The mixture was stirred at r.t. for 14 h. Water was added, and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 36.0 mg of the title compound.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=459 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.678 (0.95), 0.685 (2.22), 0.691 (1.38), 0.698 (1.07), 0.705 (2.77), 0.710 (2.13), 0.717 (2.35), 0.723 (2.34), 0.728 (2.82), 0.735 (1.29), 1.941 (0.56), 1.948 (0.59), 1.960 (1.02), 1.972 (0.57), 1.980 (0.53), 2.370 (0.93), 2.389 (1.07), 2.399 (16.00), 2.447 (0.93), 2.523 (0.85), 3.503 (0.85), 3.534 (5.20), 3.704 (0.82), 6.973 (1.14), 6.986 (1.18), 7.204 (2.30), 7.790 (0.73), 8.294 (1.71), 8.307 (1.62).

Example 16.01.05
cyclobutyl{4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (70.0 mg, approx. 164 μmol) in DMF (2 mL) was added DIPEA (140 μl, 820 μmol), T3P (170 μl, 50% in DMF, 300 μmol) and cyclobutanecarboxylic acid (28.5 mg, 98% purity, 279 μmol). The mixture was stirred at r.t. for 14 h. Water was added, and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 33.0 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=473 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.842 (0.50), 1.863 (0.98), 1.886 (0.73), 1.890 (0.74), 2.055 (1.04), 2.064 (0.77), 2.071 (0.74), 2.076 (1.19), 2.080 (0.92), 2.086 (0.94), 2.126 (1.39), 2.131 (0.92), 2.148 (1.54), 2.153 (1.16), 2.155 (1.02), 2.172 (0.71), 2.177 (0.78), 2.356 (3.13), 2.367 (2.36), 2.398 (16.00), 2.523 (0.90), 3.325 (2.38), 3.343 (2.20), 3.476 (1.49), 3.509 (5.00), 6.957 (1.14), 6.970 (1.21), 7.192 (2.34), 7.787 (0.80), 8.285 (1.78), 8.298 (1.72).

Example 16.01.06
2,2-dimethyl-1-{4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 328 μmol) and 2,2-dimethylpropanoic acid (57 μl, 490 μmol) Example 16.01.06 was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 160.0 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=475 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.184 (16.00), 2.374 (0.94), 2.386 (1.48), 2.399 (7.16), 3.509 (1.97), 3.574 (1.10), 7.196 (0.87), 8.289 (0.73), 8.302 (0.70).

Example 16.02.01
tert-butyl (2R,5S)-2,5-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

A mixture of tert-butyl (2R,5S)-4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)-2,5-dimethylpiperazine-1-carboxylate (496 mg, 924 μmol) and sodium acetate (83.4 mg, 1.02 mmol) in 1-propanol (24 mL, 310 mmol) and water (12 mL) was heated to 100° C. in a microwave oven for 48 h. The solvent was removed in vacuum. Silicagel chromatography gave 374 mg (70% yield) of the title compound.

LC-MS (Method 2): R_t=1.40 min; MS (ESIpos): m/z=519 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.921 (1.85), 0.937 (1.91), 1.229 (1.95), 1.246 (1.99), 1.400 (16.00), 2.396 (5.59), 5.757 (3.66).

Example 16.02.02
1-{(2R,5S)-2,5-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude N-(4-{[(2S,5R)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 177 μmol) and 3,3,3-trifluoropropanoic acid (68.0 mg, 531 μmol) Example 16.02.02 was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 43.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=529 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.868 (1.35), 0.884 (1.43), 0.964 (1.44), 0.980 (1.39), 1.230 (1.42), 1.248 (1.42), 1.352 (1.36), 1.369 (1.29), 2.398 (16.00), 3.441 (1.11), 3.478 (1.71), 3.530 (1.32), 3.664 (1.71), 3.703 (1.23), 6.991 (1.29), 7.290 (3.06), 7.488 (0.91), 8.233 (1.29), 8.283 (1.46), 8.297 (1.02), 12.440 (1.79).

Example 16.02.03
2-cyclopropyl-1-{(2R,5S)-2,5-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude N-(4-{[(2S,5R)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (90.0 mg, approx. 159 μmol) and cyclopropylacetic acid (47.9 mg, 478 μmol) Example 16.02.03 was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 48.0 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.113 (1.72), 0.433 (2.12), 0.437 (2.09), 0.453 (2.29), 0.457 (2.12), 0.934 (1.35), 0.950 (1.43), 2.123 (0.91), 2.140 (0.87), 2.161 (1.46), 2.178 (1.51), 2.207 (1.31), 2.233 (1.55), 2.397 (16.00), 3.427 (1.39), 3.466 (1.95), 3.656 (1.72), 3.695 (1.33), 6.988 (1.15), 7.286 (2.71), 8.231 (1.01), 8.281 (1.27), 12.444 (1.85).

Example 16.02.04
cyclopropyl{(2R,5S)-2,5-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude N-(4-{[(2S,5R)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 177 μmol) and cyclopropanecarboxylic acid (45.7 mg, 531 μmol) Example 16.02.04 was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 56.0 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=487 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.687 (1.49), 0.706 (1.59), 0.721 (2.06), 0.732 (2.15), 2.398 (16.00), 2.518 (1.85), 3.489 (1.22), 3.664 (1.54), 3.702 (1.14), 6.994 (1.07), 7.007 (1.10), 7.297 (2.29), 8.282 (1.44), 8.294 (1.38).

Example 16.02.05
cyclobutyl{(2R,5S)-2,5-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude N-(4-{[(2S,5R)-2,5-dimethylpiperazin-1-yl]methyl}pyridin-2-yl)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (90.0 mg, approx. 159 μmol) and cyclobutanecarboxylic acid (47.9 mg, 478 μmol) Example 16.02.05 was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 34.0 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.913 (1.23), 1.208 (1.18), 2.196 (1.27), 2.224 (1.33), 2.397 (16.00), 3.418 (1.16), 3.456 (1.51), 6.978 (1.17), 6.991 (1.18), 7.286 (1.93), 8.273 (1.69), 8.285 (1.60).

Example 16.03.01
tert-butyl (3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

A mixture of tert-butyl (3R)-4-({2-[(6-{[(ethanimidoylamino)oxy]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)-3-methylpiperazine-1-carboxylate (510 mg, 976 μmol) and sodium acetate (88.1 mg, 1.07 mmol) in 1-propanol (20 mL, 270 mmol) and water (10 mL) was heated to 100° C. in a microwave oven for 40 h. The solvent was removed in vacuum. Aminophase-silicagel chromatography gave 310 mg (57% yield) of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=505 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.98-1.06 (m, 3H), 1.39 (s, 9H), 2.08-2.15 (m, 1H), 2.39 (s, 7H), 2.45 (br s, 1H), 2.56-2.64 (m, 1H), 3.06-3.16 (m, 1H), 3.45-3.64 (m, 2H), 3.88 (br d, 1H), 6.96 (d, 1H), 7.20 (s, 1H), 7.51 (br s, 1H), 7.79 (br d, 1H), 7.90-8.41 (m, 2H), 10.84 (br s, 1H), 12.45 (br s, 1H).

Example 16.03.02
3,3,3-trifluoro-1-{(3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-(4-{[(2R)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)-1H-benzimidazol-2-amine hydrochloride (75.0 mg, approx. 143 μmol) in DMF (5 mL) was added potassium carbonate (98.8 mg, 715 μmol), 3,3,3-trifluoropropanoic acid (54.9 mg, 429 μmol) and HATU (163 mg, 429 μmol). The mixture was stirred at r.t. for 2 h. A solution of sodium bicarbonate was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane/hexane to give 52.0 mg of the title compound.

LC-MS (Method 1): R_t=0.78 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.042 (2.76), 1.058 (2.92), 1.070 (2.86), 1.086 (2.79), 2.398 (16.00), 3.621 (1.41), 3.649 (1.28), 6.976 (1.35), 6.989 (1.35), 7.213 (2.17), 8.281 (1.84), 8.294 (1.74).

Example 16.03.03
2-cyclopropyl-1-{(3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-(4-{[(2R)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)-1H-benzimidazol-2-amine hydrochloride (75.0 mg, approx. 143 μmol) in DMF (5 mL) was added potassium carbonate (98.8 mg, 715 μmol), cyclopropylacetic acid (42.9 mg, 429 μmol) and HATU (163 mg, 429 μmol). The mixture was stirred at r.t. for 2 h. A solution of sodium bicarbonate was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane/hexane to give 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=487 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.090 (1.09), 0.094 (1.19), 0.103 (1.90), 0.111 (1.28), 0.423 (1.10), 0.427 (1.18), 0.438 (1.19), 0.442 (1.29), 1.038 (2.00), 1.055 (3.82), 1.071 (2.12), 2.228 (1.40), 2.245 (1.58), 2.256 (1.18), 2.397 (16.00), 2.518 (1.67), 2.523 (1.27), 3.254 (1.34), 3.291 (1.49), 6.974 (1.08), 6.989 (1.09), 7.201 (1.92), 8.279 (1.60), 8.292 (1.49).

Example 16.03.04
cyclopropyl{(3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-(4-{[(2R)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)-1H-benzimidazol-2-amine hydrochloride (75.0 mg, approx. 143 μmol) in DMF (5 mL) was added potassium carbonate (98.8 mg, 715 μmol), cyclopropanecarboxylic acid (36.9 mg, 429 μmol) and HATU (163 mg, 429 μmol). The mixture was stirred at r.t. for 14 h. A solution of sodium bicarbonate was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane/hexane to give 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=473 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.683 (1.85), 0.703 (2.40), 0.722 (2.00), 1.078 (1.22), 2.399 (16.00), 6.984 (1.26), 6.999 (1.25), 7.218 (2.49), 8.283 (1.70), 8.296 (1.64).

Example 16.03.05
cyclobutyl{(3R)-3-methyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-(4-{[(2R)-2-methylpiperazin-1-yl]methyl}pyridin-2-yl)-1H-benzimidazol-2-amine hydrochloride (75.0 mg, approx. 143 μmol) in DMF (5 mL) was added potassium carbonate (98.8 mg, 715 μmol), cyclobutanecarboxylic acid (42.9 mg, 429 μmol) and HATU (163 mg, 429 μmol). The mixture was stirred at r.t. for 2 h. A solution of sodium bicarbonate was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with dichloromethane/hexane to give 51.0 mg of the title compound.

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=487 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.027 (2.71), 1.039 (3.40), 1.043 (3.55), 1.055 (2.68), 2.063 (1.27), 2.071 (1.35), 2.397 (16.00), 2.518 (1.61), 2.523 (1.18), 3.283 (1.13), 6.969 (1.08), 6.982 (1.10), 7.193 (2.18), 8.276 (1.41), 8.289 (1.34).

Example 16.04.01
tert-butyl 3,3-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (65.9 mg, 967 μmol) and di-1H-imidazol-1-ylmethanethione (907 mg, 95% purity, 4.84 mmol) in dichloromethane (20 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]-3,3-dimethylpiperazine-1-carboxylate (1.55 g, 4.84 mmol), dissolved in dichloromethane (10 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine (920 mg, 4.84 mmol), dissolved in dichloromethane (10 mL) was added and the mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with dichloromethane/methanol (100:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. The residue was dissolved in dichloromethane (60 mL) and N,N′-dipropan-2-ylcarbodiimide (1.9 mL, 12 mmol) was added. The mixture was stirred at r.t. for 56 h. Sodium carbonate solution was added he mixture was extracted with dichloromethane/methanol (100:1) and the solvent was removed in vacuum. The residue was triturated with a mixture of ethanol and hexane to give 1.1 g of the title compound.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=519 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.045 (8.53), 1.402 (16.00), 2.347 (0.68), 2.396 (5.52), 3.173 (0.79), 3.511 (1.27), 8.253 (0.76), 8.267 (0.73).

Example 16.04.02
1-{3,3-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude N-{4-[(2,2-dimethylpiperazin-1-yl)methyl]pyridin-2-yl}-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 330 μmol) and 3,3,3-trifluoropropanoic acid (44 μl, 490 μmol) Example 16.04.02 was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 130.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=529 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.044 (13.97), 1.080 (12.82), 2.355 (0.83), 2.368 (1.33), 2.382 (1.15), 2.397 (16.00), 2.414 (1.48), 2.427 (0.96), 3.306 (2.51), 3.425 (0.90), 3.439 (1.29), 3.452 (1.23), 3.470 (0.97), 3.516 (2.63), 3.526 (2.79), 3.561 (0.56), 3.589 (1.42), 3.616 (1.35), 3.633 (0.71), 3.661 (1.75), 3.688 (1.64), 3.716 (0.51), 6.998 (1.29), 7.010 (1.18), 7.222 (1.51), 7.472 (0.56), 7.492 (0.64), 7.797 (0.83), 7.818 (0.59), 8.233 (0.98), 8.271 (1.37), 8.284 (1.16), 10.897 (0.60), 12.475 (1.40).

Example 16.04.03
2-cyclopropyl-1-{3,3-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude N-{4-[(2,2-dimethylpiperazin-1-yl)methyl]pyridin-2-yl}-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 198 μmol) and cyclopropylacetic acid (29 μl, 95% purity, 300 μmol) Example 16.04.03 was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 90.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.097 (1.64), 0.110 (2.84), 0.119 (1.86), 0.417 (0.96), 0.427 (2.63), 0.431 (2.70), 0.437 (1.44), 0.442 (1.39), 0.447 (2.81), 0.452 (2.70), 0.462 (0.91), 1.033 (10.16), 1.059 (10.62), 2.228 (1.97), 2.245 (2.30), 2.251 (2.39), 2.268 (1.89), 2.323 (0.98), 2.335 (1.28), 2.392 (16.00), 3.257 (2.18), 3.305 (1.48), 3.331 (10.35), 3.414 (1.18), 6.989 (1.35), 7.001 (1.31), 7.222 (1.73), 8.262 (1.48), 8.275 (1.37), 12.473 (1.50).

Example 16.04.04
cyclopropyl{3,3-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude N-{4-[(2,2-dimethylpiperazin-1-yl)methyl]pyridin-2-yl}-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 330 μmol) and cyclopropanecarboxylic acid (41 μl, 95% purity, 490 μmol) Example 16.04.04 was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 120.0 mg of the title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=487 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.679 (1.19), 0.686 (2.31), 0.692 (1.75), 0.700 (1.32), 0.707 (2.72), 0.712 (1.56), 0.719 (1.67), 0.724 (1.97), 0.730 (2.27), 0.735 (2.39), 0.742 (1.28), 1.025 (2.67), 1.095 (5.12), 2.323 (0.84), 2.327 (1.01), 2.331 (0.96), 2.397 (14.05), 3.337 (16.00), 7.003 (1.10), 7.015 (1.04), 7.230 (1.76), 8.271 (1.12), 8.283 (1.01), 12.482 (1.19).

Example 16.04.05
cyclobutyl{3,3-dimethyl-4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude N-{4-[(2,2-dimethylpiperazin-1-yl)methyl]pyridin-2-yl}-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 198 μmol) and cyclobutanecarboxylic acid (30 μl, 95% purity, 300 μmol) Example 16.04.05 was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 70.0 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.025 (12.38), 1.048 (11.54), 2.055 (1.45), 2.064 (1.00), 2.074 (2.75), 2.078 (1.66), 2.085 (1.15), 2.140 (1.77), 2.145 (1.25), 2.161 (1.91), 2.168 (1.53), 2.185 (0.93), 2.190 (1.08), 2.327 (1.87), 2.341 (1.76), 2.397 (16.00), 3.152 (2.19), 3.285 (2.16), 3.504 (3.52), 6.989 (1.16), 7.221 (1.91), 8.230 (0.99), 8.266 (1.30), 8.278 (1.02), 12.475 (1.47).

Example 16.05.01
(rac)-tert-butyl 4-[1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (52.5 mg, 772 μmol) and di-1H-imidazol-1-ylmethanethione (917 mg, 90% purity, 4.63 mmol) in dichloromethane (30 mL) was added (rac)-tert-butyl 4-[1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (1.18 g, 3.86 mmol), dissolved in dichloromethane (30 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine (908 mg, 97% purity, 4.63 mmol), dissolved in dichloromethane (15 mL) was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (0.87 mL, 5.4 mmol) was added. The mixture was stirred at r.t. for 4 h. Further N,N′-dipropan-2-ylcarbodiimide (0.43 mL, 2.7 mmol) was added and the mixture was stirred at r.t. for 56 h. Saturated sodium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave a solid that was triturated with ethanol to give 980 mg of the title compound.

LC-MS (Method 2): R_t=1.32 min; MS (ESIpos): m/z=505 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ [ppm]: 1.156 (0.68), 1.170 (1.63), 1.185 (0.75), 1.278 (1.86), 1.292 (1.83), 1.369 (3.94), 1.375 (16.00), 1.986 (2.85), 2.397 (5.60), 3.333 (5.91), 4.032 (0.64), 5.758 (1.40), 7.164 (0.91).

Example 16.05.02
(rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

To a stirred solution of crude (rac)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (1.20 g, approx. 2.39 mmol) in DMF (30 mL) was added sodium bicarbonate (1.20 g, 14.3 mmol), 3,3,3-trifluoropropanoic acid (380 μl, 4.3 mmol) and HATU (2.00 g, 5.25 mmol). The mixture was stirred at room temperature for 3 h. Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave 760 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): ([ppm]=1.31 (d, 3H), 2.29-2.48 (m, 7H), 3.40-3.54 (m, 5H), 3.63 (q, 2H), 7.00 (br d, 1H), 7.18 (s, 1H), 7.37-8.40 (m, 4H), 10.91 (br s, 1H), 12.49 (br s, 1H).

Example 16.05.03
(rac)-cyclopropyl{4-[1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with crude (rac)-6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-{4-[(1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (255 mg, approx. 406 μmol) and cyclopropanecarboxylic acid (105 mg, 1.22 mmol) Example 16.05.03 was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 139.0 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=473 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.60-0.75 (m, 4H), 1.31 (d, 3H), 1.85-2.00 (m, 1H), 2.41 (s, 7H), 3.48 (br d, 3H), 3.68 (br s, 2H), 6.94-7.07 (m, 1H), 7.19 (s, 1H), 7.38-8.38 (m, 4H), 10.91 (br s, 1H), 12.49 (br s, 1H).

Example 16.06.01.A
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (single stereoisomer A)

embedded image

To a stirred solution of 1H-imidazole (33.6 mg, 493 μmol) and di-1H-imidazol-1-ylmethanethione (523 mg, 2.94 mmol) in dichloromethane (30 mL) was added tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (750 mg, 2.45 mmol), dissolved in dichloromethane (30 mL) at 0° C. The mixture was stirred at r.t. for 14 h. Further di-1H-imidazol-1-ylmethanethione (260 mg) dissolved in dichloromethane (15 mL) was added and the mixture was stirred for 4 h. 4-(3-methyl-1,2,4-oxadiazol-5-yl)benzene-1,2-diamine (605 mg, 3.18 mmol), dissolved in dichloromethane (15 mL) was added and the mixture was stirred at r.t. for 14 h. Dioxane (40 mL) and N,N′-dipropan-2-ylcarbodiimide (760 μl, 4.9 mmol) was added and the mixture was heated to reflux for 4 h. Water was added, the mixture was stirred for 30 minutes and the mixture was extracted with dichloromethane, dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 220 mg of the title compound.

Optical rotation [α]_D+28.8° (from solution in DMSO, c=6.0 mg/mL)

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=505 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.153 (1.19), 1.171 (2.41), 1.189 (1.18), 1.277 (1.68), 1.294 (1.69), 1.370 (1.72), 1.375 (16.00), 1.986 (4.01), 2.398 (4.43), 3.333 (8.90), 4.016 (0.90), 4.034 (0.89), 7.160 (0.95).

Example 16.06.02.A
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer A)

embedded image

Example 16.06.02.B
3,3,3-trifluoro-1-{4-[(1S or 1R)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer B)

embedded image

750 mg of (rac)-3,3,3-trifluoro-1-{4-[(1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one was separated into the single stereoisomers (Example 16.6.2.A and Example 16.6.2.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IA 5μ 250×30 mm;

Eluent A: tert.-butyl methyl ether; Eluent B: ethanol; isocratic: 90% A+10% B;

Flow: 40.0 mL/min;

Solution: 750 mg/7.8 mL dichloromethane/methanol 1:1

Injection: 13×0.6 mL

Detection: UV 325 nm

Retention
purity

Optical rotation

time in min
in %
yield
[α]_D

Example
10.6-13.9
>99.9%
270 mg
+36.9°

16.06.02.A

(from solution

Stereoisomer A

in DMSO,

c = 14.2 mg/mL)

Example
15.4-18.6
98.3%
275 mg
−35.0°

16.06.02.B

(from solution

Stereoisomer B

in DMSO,

c = 13.2 mg/mL)

Example 16.06.02.A

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=1.31 (d, 3H), 2.29-2.47 (m, 7H), 3.40-3.54 (m, 5H), 3.63 (q, 2H), 7.00 (br d, 1H), 7.18 (s, 1H), 7.44-7.87 (m, 2H), 7.97-8.27 (m, 1H), 8.31 (br d, 1H), 10.74-11.05 (m, 1H), 12.48 (br s, 1H).

Example 16.06.02.B

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=515 [M+H]⁺.

Example 16.06.03.A
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Starting with crude 6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (100 mg, approx. 198 μmol) and cyclopropanecarboxylic acid (23 μl, 300 μmol), Example 16.06.03.A was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 70.0 mg of the title compound.

Optical rotation [α]_D+47.2° (DMSO) (from solution in DMSO, c=6.0 mg/mL)

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=473 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (1.40), 0.663 (3.18), 0.669 (2.03), 0.675 (1.67), 0.682 (3.92), 0.687 (3.54), 0.691 (3.80), 0.698 (3.30), 0.703 (3.74), 0.710 (1.79), 0.811 (1.03), 0.828 (1.72), 0.833 (0.78), 0.837 (0.95), 0.847 (1.05), 0.855 (1.93), 0.933 (0.92), 0.950 (0.96), 1.233 (1.40), 1.293 (6.16), 1.310 (6.16), 1.915 (0.75), 1.922 (0.85), 1.935 (1.35), 1.947 (0.80), 1.954 (0.73), 2.327 (0.87), 2.398 (16.00), 2.523 (1.30), 2.619 (0.67), 3.462 (2.74), 3.478 (2.68), 3.673 (1.63), 5.760 (0.78), 6.994 (1.39), 7.175 (3.19), 7.495 (0.84), 7.799 (0.96), 8.236 (1.28), 8.303 (1.51), 12.474 (1.58).

The Example compounds in the following table 8 were synthesized in analogy to the preparation of Example 117.02, followed by purification by preparative reverse phase HPLC or silicagel chromatography.

TABLE 8

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Example
Starting materials (SM):

Example 16.06.04

embedded image

{4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.18 min; MS (ESIneg): m/z = 539 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.157 (1.86), 1.251 (1.08), 1.263

(2.32), 1.286 (4.09), 1.302 (3.91), 2.327 (0.49), 2.338 (0.66), 2.353 (0.79),

2.367 (0.96), 2.394 (16.00), 2.450 (0.95), 2.463 (0.80), 2.479 (0.75), 2.518

(0.56), 2.523 (0.43), 3.339 (1.68), 3.456 (1.06), 3.473 (1.04), 6.967 (1.21),

6.970 (1.23), 6.980 (1.22), 6.983 (1.25), 7.271 (0.72), 7.533 (0.60), 7.554

(0.69), 7.768 (1.44), 7.772 (1.40), 7.789 (1.13), 7.793 (1.21), 8.140 (0.72),

8.282 (1.99), 8.295 (1.89).

SM: Compound 16.07 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 16.06.05

embedded image

((1RS)-2,2-difluorocyclopropyl){4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-

oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-

1-yl}methanone

LC-MS (Method 2): R_t= 1.12 min; MS (ESIneg): m/z = 507 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.295 (5.02), 1.311 (5.05), 1.793

(0.46), 1.810 (0.52), 1.822 (0.53), 1.840 (0.52), 1.853 (0.49), 1.859 (0.56),

1.873 (0.67), 1.892 (0.62), 1.905 (0.40), 2.306 (0.47), 2.323 (0.70), 2.327

(0.76), 2.332 (0.80), 2.361 (0.87), 2.371 (0.73), 2.398 (16.00), 2.442 (1.05),

2.449 (1.00), 2.518 (1.27), 2.523 (0.92), 3.074 (0.43), 3.095 (0.48), 3.103

(0.55), 3.109 (0.56), 3.122 (0.49), 3.129 (0.59), 3.137 (0.49), 3.157 (0.41),

3.482 (1.06), 3.490 (1.32), 3.498 (1.35), 3.506 (1.49), 3.516 (1.23), 3.523

(1.22), 3.539 (0.78), 3.547 (0.69), 3.562 (0.82), 3.572 (0.64), 3.618 (0.61),

3.634 (0.54), 6.991 (0.98), 7.003 (0.91), 7.180 (2.15), 7.475 (0.43), 7.495

(0.49), 7.798 (0.67), 7.818 (0.46), 8.235 (0.75), 8.301 (1.09), 8.313 (0.98),

10.910 (0.47), 12.477 (0.98).

SM: Compound 16.07 and (1RS)-2,2-difluorocyclopropanecarboxylic acid

Example 16.06.06

embedded image

2-hydroxy-2-methyl-1-{4-[(1R or 1S)-1-(2-{[6-(3-methyl-1,2,4-oxadiazol-5-

yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-

1-one

LC-MS (Method 2): R_t= 1.02 min; MS (ESIneg): m/z = 489 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.278 (16.00), 1.287 (3.46), 1.304

(2.87), 2.322 (0.53), 2.327 (0.46), 2.336 (0.67), 2.350 (0.75), 2.397 (10.66),

3.432 (0.81), 3.449 (0.82), 5.365 (2.64), 6.974 (0.81), 6.976 (0.82), 6.987

(0.82), 6.989 (0.82), 7.168 (1.53), 7.785 (0.60), 7.807 (0.51), 8.291 (1.29),

8.304 (1.21).

SM: Compound 16.07 and 2-hydroxy-2-methylpropanoic acid

Example 17.01
tert-butyl 4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

A mixture of tert-butyl 4-[(2-{[6-({[(cyclopropylcarbonoimidoyl)amino]oxy}carbonyl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (7.50 g, 14.0 mmol) and sodium acetate (1.27 g, 15.4 mmol) in 1-propanol (330 mL) and water (170 mL) was heated to 100° C. for 72 h. The mixture was concentrated in vacuum, a half-saturated solution of sodium bicarbonate was added and the mixture was extracted with dichloromethane/methanol (9:1). The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 6.40 g (88% yield) of the title compound.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=517 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.986 (0.62), 0.992 (0.68), 0.997 (0.63), 1.004 (0.69), 1.054 (0.62), 1.085 (0.60), 1.106 (0.67), 1.395 (16.00), 2.162 (0.45), 2.346 (0.86), 2.359 (1.29), 2.371 (0.95), 2.518 (1.44), 2.523 (1.03), 3.347 (1.37), 3.360 (0.90), 3.507 (1.66), 5.755 (0.47), 8.271 (0.74), 8.284 (0.73).

Example 17.02
1-{4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of crude 6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 221 μmol) in DMF (2 mL) was added DIPEA (190 μl, 1.1 mmol), T3P (230 μl, 50% in DMF, 400 μmol) and 3,3,3-trifluoropropanoic acid (34 μl, 98% purity, 380 μmol). The mixture was stirred at r.t. for 14 h. Water was added, and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 19.0 mg of the title compound.

LC-MS (Method 1): R_t=0.92 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (300 MHz, DMSO-d₆): δ [ppm]=0.94-1.14 (m, 4H), 2.09-2.21 (m, 1H), 2.32-2.45 (m, 4H), 3.40-3.56 (m, 6H), 3.64 (q, 2H), 6.96 (br d, 1H), 7.17 (s, 1H), 7.36-8.35 (m, 4H), 10.92 (br s, 1H), 12.47 (br s, 1H).

Example 17.03
2-cyclopropyl-1-{4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (310 mg, approx. 548 μmol) and cyclopropylacetic acid (74 μl, 98% purity, 820 μmol) Example 17.03. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 150.0 mg of the title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (2.04), 0.011 (7.50), 0.014 (6.93), 0.023 (7.67), 0.026 (7.29), 0.037 (2.48), 0.330 (2.56), 0.340 (6.58), 0.344 (6.76), 0.350 (3.41), 0.354 (3.11), 0.360 (7.06), 0.364 (6.77), 0.374 (2.48), 0.818 (0.62), 0.822 (0.79), 0.835 (1.46), 0.838 (1.50), 0.842 (1.44), 0.847 (1.20), 0.854 (2.45), 0.859 (1.39), 0.862 (1.23), 0.867 (1.43), 0.871 (1.52), 0.874 (1.41), 0.890 (2.04), 0.902 (7.07), 0.908 (6.74), 0.914 (6.44), 0.920 (8.15), 0.928 (2.70), 0.939 (1.62), 0.954 (0.64), 0.975 (0.46), 0.991 (2.41), 0.999 (6.10), 1.006 (4.83), 1.011 (4.04), 1.020 (6.74), 1.027 (5.07), 1.039 (1.83), 2.044 (1.17), 2.056 (2.22), 2.064 (2.59), 2.077 (4.54), 2.089 (2.40), 2.097 (2.69), 2.109 (1.14), 2.151 (12.69), 2.168 (12.24), 2.237 (0.59), 2.241 (0.81), 2.247 (0.78), 2.278 (5.47), 2.296 (5.74), 2.309 (6.09), 2.437 (1.58), 2.579 (0.43), 2.584 (0.56), 2.589 (0.42), 3.370 (5.03), 3.380 (4.54), 3.405 (5.07), 3.430 (16.00), 6.363 (0.47), 6.608 (0.48), 6.878 (3.57), 6.890 (3.69), 7.100 (9.00), 7.393 (1.16), 7.571 (0.50), 7.668 (2.20), 7.888 (0.63), 8.130 (1.65), 8.192 (6.66), 8.205 (6.46), 10.811 (1.46), 12.377 (4.51).

Example 17.04
1-{4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}but-3-en-1-one

embedded image

Starting with crude 6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (80.0 mg, approx. 141 μmol) and but-3-enoic acid (19 μl, 97% purity, 210 μmol) Example 17.04. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.975 (1.61), 0.987 (5.70), 0.993 (6.21), 0.998 (5.70), 1.000 (5.29), 1.004 (6.04), 1.013 (2.47), 1.042 (0.52), 1.077 (2.30), 1.086 (5.84), 1.092 (4.43), 1.097 (3.74), 1.107 (6.32), 1.113 (4.77), 1.125 (1.75), 1.818 (0.65), 1.822 (0.65), 1.835 (0.62), 1.839 (0.62), 1.955 (0.48), 2.131 (1.13), 2.143 (2.16), 2.151 (2.44), 2.155 (1.34), 2.163 (4.26), 2.172 (1.55), 2.175 (2.20), 2.184 (2.06), 2.196 (0.96), 2.318 (0.48), 2.323 (0.96), 2.327 (1.34), 2.332 (1.06), 2.337 (0.86), 2.349 (3.36), 2.361 (5.25), 2.375 (4.19), 2.392 (4.33), 2.404 (5.42), 2.416 (3.67), 2.518 (3.43), 2.523 (2.33), 2.665 (0.86), 2.669 (1.13), 2.674 (0.79), 2.782 (0.45), 2.942 (0.69), 3.133 (5.25), 3.137 (9.13), 3.141 (5.42), 3.150 (5.53), 3.153 (9.13), 3.157 (5.15), 3.472 (8.52), 3.482 (8.34), 3.519 (16.00), 5.069 (5.53), 5.073 (11.64), 5.076 (5.60), 5.093 (1.30), 5.097 (3.33), 5.101 (5.32), 5.105 (2.33), 5.109 (2.20), 5.113 (5.29), 5.118 (3.91), 5.122 (1.20), 5.826 (1.34), 5.843 (3.12), 5.850 (0.72), 5.854 (0.86), 5.859 (1.37), 5.867 (2.13), 5.871 (2.06), 5.883 (2.13), 5.888 (2.23), 5.895 (1.17), 5.899 (0.65), 5.904 (0.86), 5.911 (2.44), 5.928 (1.03), 6.965 (3.78), 6.978 (3.71), 7.187 (7.35), 7.483 (0.69), 7.750 (2.44), 7.769 (1.99), 8.210 (0.76), 8.278 (6.94), 8.292 (6.49), 10.894 (1.10), 12.473 (2.20).

Example 17.05
cyclopropyl{4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (6.10 g, approx. 13.5 mmol) and cyclopropanecarboxylic acid (2.7 mL, 98% purity, 34 mmol) Example 17.05. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 5.12 g of the title compound.

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.63-0.79 (m, 4H), 0.97-1.03 (m, 2H), 1.07-1.14 (m, 2H), 1.89-2.03 (m, 1H), 2.11-2.22 (m, 1H), 2.32-2.48 (m, 4H), 3.43-3.59 (m, 4H), 3.71 (br s, 2H), 6.99 (d, 1H), 7.20 (s, 1H), 7.33-8.39 (m, 4H), 10.91 (br s, 1H), 12.49 (br s, 1H).

Example 17.06
cyclobutyl{4-[(2-{[6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 221 μmol) in DMF (2 mL) was added DIPEA (190 μl, 1.1 mmol), T3P (230 μl, 50% in DMF, 400 μmol) and cyclobutanecarboxylic acid (34 μl, 98% purity, 380 μmol). The mixture was stirred at r.t. for 2 h. Water was added, and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave 68.0 mg of the title compound.

LC-MS (Method 1): R_t=0.89 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.94-1.02 (m, 2H), 1.05-1.14 (m, 2H), 1.65-1.78 (m, 1H), 1.80-1.93 (m, 1H), 2.00-2.20 (m, 5H), 2.34 (br s, 4H), 3.33 (br s, 3H), 3.41-3.53 (m, 4H), 6.95 (br d, 1H), 7.17 (s, 1H), 7.34-8.35 (m, 4H), 10.86 (br s, 1H), 12.45 (br s, 1H).

Example 17.07
N-(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)-6-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine

embedded image

A mixture of N-[({2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]cyclopropanecarboximidamide (160 mg, 294 μmol) and sodium acetate (26.5 mg, 323 μmol) in 1-propanol (7.0 mL), water (3.5 mL) and DMA (700 μl) was heated to 100° C. 30 h. The mixture was cooled to r.t. and a white solid precipitated. Filtration gave 110 mg (64% yield) of the title compound.

LC-MS (Method 2): R_t=1.49 min; MS (ESIpos): m/z=527.5 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.976 (1.51), 0.987 (5.57), 0.994 (6.21), 0.999 (5.89), 1.006 (5.87), 1.014 (2.39), 1.040 (0.65), 1.061 (0.43), 1.077 (2.29), 1.085 (5.83), 1.092 (4.50), 1.097 (3.78), 1.106 (6.35), 1.112 (4.78), 1.124 (1.74), 2.130 (1.06), 2.142 (2.03), 2.150 (2.32), 2.163 (3.94), 2.174 (2.13), 2.183 (1.91), 2.195 (0.89), 2.322 (0.49), 2.327 (0.66), 2.331 (0.50), 2.523 (1.85), 2.599 (7.95), 2.659 (0.49), 2.664 (0.69), 2.669 (0.84), 2.674 (0.61), 3.022 (9.56), 3.575 (16.00), 6.992 (3.44), 7.005 (3.51), 7.015 (3.07), 7.020 (2.89), 7.035 (4.83), 7.039 (4.86), 7.054 (3.32), 7.057 (3.38), 7.158 (4.02), 7.162 (4.09), 7.178 (5.89), 7.182 (5.18), 7.213 (7.67), 7.278 (3.26), 7.283 (3.50), 7.297 (4.15), 7.301 (4.58), 7.317 (2.23), 7.321 (2.25), 7.388 (6.45), 7.392 (6.11), 7.407 (5.86), 7.411 (5.42), 7.481 (1.05), 7.756 (2.05), 7.774 (1.54), 7.975 (0.54), 8.219 (1.45), 8.291 (6.52), 8.305 (6.21), 10.910 (1.28), 12.476 (3.81).

Example 18.01
3,3,3-trifluoro-1-(4-{[2-({6-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with crude 6-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (139 mg, approx. 296 μmol) and 3,3,3-trifluoropropanoic acid (55 μl, 98% purity, 590 μmol) Example 18.01. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=543 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.974 (15.10), 0.991 (16.00), 2.112 (0.86), 2.130 (1.07), 2.146 (0.84), 2.327 (0.47), 2.373 (1.22), 2.386 (1.82), 2.398 (1.37), 2.414 (1.34), 2.427 (1.80), 2.438 (1.32), 2.523 (0.96), 2.624 (4.30), 2.642 (3.99), 2.669 (0.50), 3.461 (1.30), 3.474 (1.81), 3.486 (1.46), 3.497 (1.43), 3.511 (1.76), 3.522 (1.48), 3.535 (4.95), 3.606 (0.90), 3.634 (2.58), 3.661 (2.42), 3.688 (0.76), 6.968 (1.14), 6.982 (1.16), 7.195 (2.16), 7.794 (0.65), 8.289 (1.85), 8.302 (1.72), 12.471 (0.78).

Example 18.02
cyclopropyl(4-{[2-({6-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

A mixture of N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]-3-methylbutanimidamide (125 mg, 241 μmol) and sodium acetate (21.7 mg, 265 μmol) in 1-propanol (6 mL) and water (3 mL) was heated to 100° C. for 120 h. The solvent was removed in vacuum. Silicagel chromatography gave 95.0 mg (71% yield) of the title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.679 (1.01), 0.686 (2.41), 0.692 (1.49), 0.699 (1.15), 0.706 (2.84), 0.711 (2.46), 0.717 (2.59), 0.723 (2.46), 0.729 (2.88), 0.735 (1.33), 0.976 (15.35), 0.993 (16.00), 1.943 (0.59), 1.949 (0.63), 1.962 (1.04), 1.974 (0.61), 1.981 (0.59), 2.114 (0.83), 2.131 (1.08), 2.148 (0.86), 2.327 (0.59), 2.375 (1.04), 2.447 (1.06), 2.523 (1.76), 2.625 (4.28), 2.642 (4.01), 2.669 (0.56), 3.501 (0.97), 3.535 (5.50), 3.705 (0.95), 6.976 (1.28), 6.989 (1.31), 7.209 (2.19), 7.793 (0.86), 7.813 (0.70), 8.290 (2.03), 8.303 (1.94).

Example 19.01
{4-[(2-{[6-(3-cyclopentyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

A mixture of N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]cyclopentanecarboximidamide (135 mg, 254 μmol) and sodium acetate (23.0 mg, 280 μmol) in 1-propanol (6.5 mL) and water (3.2 mL) was heated to 100° C. for 16 h. The solvent was removed in vacuum. Silicagel chromatography gave 90.0 mg (62% yield) of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.666 (0.99), 0.678 (3.12), 0.685 (7.47), 0.690 (4.50), 0.698 (3.50), 0.704 (8.91), 0.709 (7.62), 0.714 (8.08), 0.721 (7.47), 0.726 (8.76), 0.733 (3.81), 0.746 (0.91), 1.229 (0.76), 1.637 (0.46), 1.652 (0.99), 1.656 (1.52), 1.659 (2.13), 1.662 (1.98), 1.666 (2.21), 1.675 (2.97), 1.679 (3.43), 1.686 (2.97), 1.694 (3.28), 1.699 (2.90), 1.704 (1.52), 1.718 (1.30), 1.722 (1.52), 1.728 (1.60), 1.733 (1.52), 1.746 (1.83), 1.755 (2.74), 1.758 (2.44), 1.762 (1.98), 1.765 (2.51), 1.769 (2.97), 1.773 (3.35), 1.777 (2.51), 1.790 (4.50), 1.805 (3.20), 1.814 (2.51), 1.821 (2.82), 1.826 (2.51), 1.831 (2.06), 1.840 (3.50), 1.845 (2.59), 1.852 (1.52), 1.859 (2.59), 1.865 (1.07), 1.875 (0.84), 1.932 (0.84), 1.945 (1.83), 1.952 (1.98), 1.956 (1.45), 1.964 (3.28), 1.970 (1.60), 1.976 (1.83), 1.983 (1.75), 1.995 (0.91), 2.010 (0.91), 2.019 (1.68), 2.025 (2.21), 2.029 (2.13), 2.034 (2.44), 2.040 (3.96), 2.043 (3.05), 2.054 (1.90), 2.060 (3.43), 2.068 (2.36), 2.077 (0.91), 2.085 (0.84), 2.092 (0.91), 2.317 (0.76), 2.322 (1.60), 2.326 (2.21), 2.331 (1.83), 2.336 (1.22), 2.366 (3.20), 2.444 (3.35), 2.518 (5.87), 2.522 (3.96), 2.659 (0.69), 2.664 (1.45), 2.668 (1.98), 2.673 (1.37), 2.678 (0.61), 3.227 (1.14), 3.247 (3.35), 3.252 (0.76), 3.266 (4.50), 3.280 (1.14), 3.285 (3.05), 3.294 (1.60), 3.499 (3.12), 3.533 (16.00), 3.705 (3.05), 5.755 (1.30), 6.972 (3.66), 6.985 (3.73), 7.204 (5.33), 7.489 (0.61), 7.783 (2.59), 7.804 (2.21), 8.239 (0.61), 8.284 (6.78), 8.297 (6.32), 10.891 (0.91), 12.481 (1.45).

Example 20.01
(4-{[2-({6-[3-(butan-2-yl)-1,2,4-oxadiazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

A mixture of N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]-2-methylbutanimidamide (190 mg, 366 μmol) and sodium acetate (33.1 mg, 403 μmol) in 1-propanol (10 mL) and water (5 mL) was heated to 100° C. for 16 h. The solvent was removed in vacuum. Silicagel chromatography gave 100 mg (49% yield) of the title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.664 (0.63), 0.676 (1.80), 0.683 (4.30), 0.689 (2.67), 0.696 (2.06), 0.703 (5.19), 0.709 (4.07), 0.714 (4.44), 0.721 (4.37), 0.726 (5.18), 0.733 (2.36), 0.745 (0.60), 0.866 (6.49), 0.885 (15.58), 0.904 (7.13), 1.295 (16.00), 1.312 (15.80), 1.631 (0.67), 1.647 (1.17), 1.650 (0.86), 1.665 (2.00), 1.681 (1.44), 1.683 (1.59), 1.699 (1.12), 1.741 (1.29), 1.759 (2.06), 1.774 (1.12), 1.778 (1.46), 1.793 (1.22), 1.812 (0.73), 1.942 (1.07), 1.949 (1.12), 1.953 (0.85), 1.961 (1.90), 1.967 (0.90), 1.973 (1.07), 1.980 (0.97), 2.366 (1.89), 2.446 (1.93), 2.899 (1.14), 2.917 (1.93), 2.933 (1.85), 2.951 (1.03), 3.501 (1.81), 3.531 (9.32), 3.704 (1.75), 6.974 (2.03), 6.987 (2.06), 7.194 (4.52), 7.797 (1.17), 7.818 (0.96), 8.287 (3.94), 8.299 (3.70), 12.480 (1.56).

Example 21.01
{4-[(2-{[6-(3-benzyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

A mixture of N-[({2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}carbonyl)oxy]-2-phenylethanimidamide (235 mg, 425 μmol) and sodium acetate (38.4 mg, 468 μmol) in 1-propanol (11 mL) and water (5.5 mL) was heated to 100° C. for 70 h. The solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with a mixture of ethanol and water (1:1) to give 25.0 mg (10% yield) of the title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=535 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.665 (0.79), 0.676 (2.49), 0.684 (5.84), 0.689 (3.72), 0.697 (2.96), 0.704 (6.98), 0.708 (6.19), 0.713 (6.46), 0.721 (5.97), 0.725 (6.90), 0.732 (3.20), 0.745 (0.74), 1.232 (0.86), 1.931 (0.67), 1.944 (1.38), 1.950 (1.55), 1.963 (2.47), 1.975 (1.45), 1.982 (1.33), 1.994 (0.57), 2.323 (1.38), 2.327 (1.90), 2.331 (1.60), 2.337 (1.26), 2.365 (2.81), 2.445 (2.98), 2.523 (4.24), 2.660 (0.57), 2.665 (1.16), 2.669 (1.58), 2.673 (1.16), 2.678 (0.59), 3.495 (2.66), 3.530 (12.77), 3.702 (2.61), 4.146 (15.53), 6.972 (3.03), 6.984 (3.06), 7.201 (3.77), 7.250 (0.64), 7.255 (1.21), 7.259 (0.84), 7.265 (0.99), 7.271 (2.88), 7.278 (1.41), 7.283 (1.31), 7.288 (2.49), 7.293 (1.63), 7.332 (2.86), 7.338 (1.75), 7.348 (2.84), 7.352 (8.55), 7.370 (16.00), 7.375 (11.19), 7.391 (2.74), 7.396 (1.75), 7.474 (0.57), 7.769 (2.22), 7.790 (1.82), 8.228 (0.54), 8.280 (4.93), 8.294 (4.71), 10.896 (0.69), 12.473 (1.65).

Example 22.01
N-(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)-6-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)-1H-benzimidazol-2-amine

embedded image

A mixture of 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-[(cyclopropylcarbonyl)oxy]-1H-benzimidazole-6-carboximidamide (160 mg, 294 μmol) and sodium acetate (26.5 mg, 323 μmol) in 1-propanol (10 mL), water (4 mL) and DMA (1.0 mL) was heated to 100° C. 14 h. Water was added and the mixture was extracted with dichloromethane/methanol (20:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with a mixture of warm ethanol and ethyl acetate (3:1) to give 70 mg (37% yield) of the title compound.

LC-MS (Method 2): R_t=1.51 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.167 (0.71), 1.179 (2.54), 1.186 (3.28), 1.191 (2.72), 1.198 (2.94), 1.206 (1.22), 1.254 (1.18), 1.263 (2.73), 1.271 (2.08), 1.275 (2.03), 1.284 (3.38), 1.291 (2.07), 1.304 (0.74), 2.350 (0.54), 2.362 (1.04), 2.370 (1.15), 2.382 (1.95), 2.391 (0.84), 2.394 (1.09), 2.403 (0.98), 2.595 (3.90), 3.019 (4.71), 3.313 (16.00), 6.969 (2.14), 6.982 (2.15), 7.013 (1.23), 7.017 (1.31), 7.033 (2.30), 7.036 (2.27), 7.051 (1.54), 7.055 (1.54), 7.154 (1.97), 7.158 (1.98), 7.174 (2.79), 7.178 (2.46), 7.207 (4.19), 7.274 (1.60), 7.278 (1.70), 7.293 (2.00), 7.297 (2.20), 7.313 (1.06), 7.317 (1.09), 7.386 (2.97), 7.389 (2.93), 7.406 (2.98), 7.410 (2.76), 7.683 (0.83), 8.276 (3.51), 8.288 (3.36), 10.789 (1.70), 12.362 (0.92).

Example 22.02
N-(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)-6-[5-(2,2-dimethylpropyl)-1,2,4-oxadiazol-3-yl]-1H-benzimidazol-2-amine

embedded image

A mixture of 2-[(4-{[4-(2-chlorophenyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-N′-[(3,3-dimethylbutanoyl)oxy]-1H-benzimidazole-6-carboximidamide (130 mg, 226 μmol) and sodium acetate (20.4 mg, 249 μmol) in 1-propanol (8 mL), water (3 mL) and DMA (770 μl) was heated to 100° C. 14 h. Water was added and the mixture was extracted with dichloromethane/methanol (20:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with warm ethyl acetate to give 80 mg (64% yield) of the title compound.

LC-MS (Method 2): R_t=1.65 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.059 (16.00), 2.904 (3.28), 3.024 (1.35), 3.572 (2.30), 6.975 (0.61), 6.988 (0.62), 7.021 (0.42), 7.036 (0.67), 7.039 (0.71), 7.055 (0.49), 7.058 (0.51), 7.160 (0.59), 7.164 (0.61), 7.180 (0.85), 7.184 (0.77), 7.209 (1.23), 7.279 (0.50), 7.283 (0.53), 7.298 (0.59), 7.302 (0.66), 7.389 (0.91), 7.393 (0.89), 7.409 (0.91), 7.413 (0.83), 8.279 (1.03), 8.293 (1.00), 10.787 (0.59).

Example 23.01.01
2-cyclopropyl-1-{4-[(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride (144 mg) and cyclopropylacetic acid (25.6 mg, 255 μmol), Example 23.01.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 12.0 mg of the title compound.

LC-MS (Method 2): R_t=0.96 min; MS (ESIpos): m/z=469 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.011 (2.89), 0.014 (2.74), 0.023 (2.95), 0.026 (2.84), 0.037 (1.04), 0.330 (1.02), 0.340 (2.57), 0.345 (2.69), 0.350 (1.49), 0.355 (1.34), 0.360 (2.74), 0.365 (2.65), 0.375 (1.04), 0.854 (0.98), 1.022 (16.00), 2.154 (4.65), 2.171 (4.52), 2.242 (1.38), 2.247 (1.08), 2.279 (2.12), 2.291 (1.99), 2.311 (2.19), 2.434 (7.87), 2.438 (5.62), 2.584 (1.27), 2.608 (1.72), 3.373 (2.10), 3.407 (2.08), 3.431 (5.71), 4.110 (1.36), 6.864 (1.34), 6.877 (1.38), 7.118 (2.48), 8.189 (2.27), 8.202 (2.21), 8.668 (3.44), 8.682 (3.25), 9.080 (3.06), 9.083 (3.23).

Example 23.01.02
cyclopropyl{4-[(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride (144 mg) and cyclopropanecarboxylic acid (22.0 mg, 255 μmol), Example 23.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=0.93 min; MS (ESIpos): m/z=455 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.686 (2.19), 0.691 (1.38), 0.706 (2.81), 0.710 (2.27), 0.714 (2.50), 0.722 (2.31), 0.726 (2.65), 0.733 (1.19), 1.107 (16.00), 2.323 (1.69), 2.327 (2.42), 2.332 (1.77), 2.518 (13.54), 2.523 (9.46), 2.665 (1.65), 2.669 (2.31), 2.674 (1.65), 3.530 (4.00), 4.194 (1.50), 7.200 (1.65), 8.754 (2.58), 8.768 (2.42), 9.167 (1.69).

Example 23.02.01
3,3,3-trifluoro-1-{4-[(2-methyl-6-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with N-[6-methyl-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine (68.0 mg, 170 μmol) and 3,3,3-trifluoropropanoic acid (32.6 mg, 255 μmol), Example 23.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 33.0 mg (34%) of the title compound.

LC-MS (Method 4): R_t=1.04 min; MS (ESIpos): m/z=511 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.260 (0.99), 2.397 (2.13), 2.410 (2.53), 2.423 (1.87), 2.632 (16.00), 3.157 (1.05), 3.183 (3.12), 3.208 (3.02), 3.233 (0.95), 3.373 (1.58), 3.433 (2.72), 3.478 (5.58), 3.573 (1.43), 6.796 (1.09), 6.808 (1.65), 6.897 (2.03), 7.681 (0.99), 7.701 (1.12), 7.783 (1.86), 7.786 (1.75), 7.797 (1.91), 7.800 (1.71), 7.956 (1.01), 7.960 (1.19), 7.977 (0.81), 7.981 (0.82), 8.345 (1.73), 8.349 (1.68), 8.737 (0.83), 8.745 (1.85), 8.751 (0.94), 8.759 (1.68), 9.243 (1.22), 9.251 (2.33), 9.254 (2.10).

Example 23.02.02
cyclopropyl{4-[(2-methyl-6-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with N-[6-methyl-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine (68.0 mg, 170 μmol) and cyclopropanecarboxylic acid (21.9 mg, 255 μmol), Example 23.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 33.0 mg (37%) of the title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=469 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.725 (2.01), 0.732 (2.27), 0.745 (2.17), 0.752 (2.30), 0.762 (0.85), 0.944 (0.81), 0.953 (2.28), 0.961 (2.27), 0.965 (2.61), 0.972 (2.35), 1.630 (3.34), 1.648 (1.70), 1.656 (1.31), 1.660 (1.18), 1.667 (1.42), 1.671 (1.04), 1.679 (0.92), 2.383 (1.40), 2.443 (1.40), 2.632 (16.00), 3.476 (5.52), 3.595 (1.69), 6.816 (1.34), 6.830 (2.48), 6.934 (3.02), 7.561 (1.07), 7.582 (1.18), 7.699 (1.60), 7.720 (1.84), 7.782 (0.83), 7.785 (1.03), 7.788 (1.65), 7.791 (1.65), 7.795 (1.00), 7.799 (1.08), 7.801 (1.69), 7.805 (1.62), 7.941 (0.78), 7.946 (0.77), 7.958 (1.49), 7.962 (2.05), 7.967 (0.80), 7.979 (1.25), 7.983 (1.26), 8.351 (2.33), 8.355 (2.27), 8.426 (1.03), 8.727 (1.42), 8.739 (2.97), 8.752 (2.54), 9.240 (1.53), 9.243 (1.64), 9.248 (2.89), 9.251 (2.93), 12.629 (1.28).

Example 23.03.01
cyclopropyl(4-{[2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with cyclopropyl(4-{[2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone (169 mg, 297 μmol) and 4-bromopyrimidine hydrochloride (1:1) (104 mg, 535 μmol), Example 23.03.01 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 9.00 mg (6%) of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=523 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.682 (2.62), 0.702 (3.08), 0.715 (2.62), 0.722 (2.62), 0.727 (3.08), 0.734 (1.54), 1.230 (0.92), 1.972 (1.08), 2.318 (1.54), 2.323 (3.54), 2.327 (4.92), 2.332 (3.54), 2.337 (1.38), 2.410 (1.38), 2.518 (16.00), 2.523 (11.85), 2.660 (1.54), 2.665 (3.54), 2.669 (5.08), 2.673 (3.38), 2.679 (1.54), 3.523 (1.38), 3.634 (4.92), 3.732 (1.23), 7.219 (1.38), 7.982 (1.23), 8.180 (1.38), 8.540 (3.69), 8.640 (1.54), 8.654 (1.38), 9.075 (2.46).

Example 23.04.01
(rac)-cyclobutyl{4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with (rac)-N-{4-[(1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine (210 mg, 524 μmol) and cyclobutanecarboxylic acid (78.7 mg, 787 μmol), Example 23.04.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg (11%) of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.276 (3.36), 1.293 (3.26), 1.844 (0.78), 2.031 (0.98), 2.052 (1.13), 2.061 (0.94), 2.099 (1.13), 2.121 (1.11), 2.430 (1.18), 3.275 (1.16), 3.294 (1.93), 3.307 (1.71), 3.318 (1.78), 3.336 (16.00), 3.429 (1.39), 3.445 (1.58), 7.173 (1.78), 8.274 (1.18), 8.286 (1.09), 8.753 (2.06), 8.766 (1.91), 9.167 (1.57).

Example 23.04.02
(rac)-cyclopropyl{4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with (rac)-N-{4-[(1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine (210 mg, 524 μmol) and cyclopropanecarboxylic acid (67.7 mg, 787 μmol), Example 23.04.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 33.5 mg (13%) of the title compound.

LC-MS (Method 4): R_t=0.97 min; MS (ESIpos): m/z=469 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (4.11), 0.663 (8.74), 0.669 (6.30), 0.676 (5.23), 0.683 (10.92), 0.691 (10.79), 0.699 (9.15), 0.703 (10.07), 0.710 (4.93), 1.295 (15.98), 1.312 (16.00), 1.917 (2.10), 1.924 (2.36), 1.936 (3.58), 1.948 (2.14), 1.955 (1.91), 2.326 (2.74), 2.397 (3.32), 2.668 (1.13), 3.455 (6.73), 3.471 (8.23), 3.674 (4.60), 6.970 (3.83), 6.983 (3.92), 7.187 (9.13), 7.454 (1.31), 7.953 (2.94), 7.974 (3.25), 8.227 (1.29), 8.282 (6.17), 8.295 (5.93), 8.407 (1.95), 8.753 (8.97), 8.766 (8.48), 9.167 (8.65), 10.792 (1.22), 12.358 (1.84).

Example 23.04.03
(rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude (rac)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-(pyrimidin-4-yl)-1H-benzimidazol-2-amine hydrochloride (212 mg) and 3,3,3-trifluoropropanoic acid (66.2 mg, 517 μmol), Example 23.04.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 63 mg of the title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=511 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.260 (1.92), 1.330 (15.82), 1.346 (16.00), 1.640 (3.19), 2.339 (4.95), 2.384 (2.75), 2.422 (2.52), 3.128 (3.35), 3.153 (9.73), 3.178 (9.41), 3.203 (3.24), 3.297 (6.15), 3.354 (1.46), 3.373 (3.82), 3.390 (3.75), 3.404 (2.03), 3.492 (3.63), 6.933 (2.82), 6.947 (5.43), 6.962 (3.93), 6.964 (3.75), 7.006 (1.11), 7.090 (10.52), 7.529 (1.25), 7.573 (4.09), 7.594 (4.60), 7.708 (4.97), 7.729 (5.60), 7.770 (4.21), 7.774 (4.53), 7.780 (4.14), 7.784 (6.91), 7.787 (5.09), 7.794 (3.56), 7.797 (2.98), 7.925 (2.94), 7.929 (2.96), 7.945 (2.50), 7.950 (2.61), 7.997 (3.98), 8.002 (3.86), 8.018 (3.40), 8.023 (3.40), 8.306 (4.62), 8.314 (8.62), 8.318 (15.56), 8.332 (5.73), 8.467 (4.72), 8.471 (4.60), 8.736 (5.02), 8.748 (9.69), 8.762 (6.68), 9.230 (5.71), 9.234 (5.64), 9.254 (8.12), 9.257 (7.79), 12.512 (2.96).

Example 23.05.01.A
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 23.05.01.B
cyclopropyl{4-[(1S or 1R)-1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

30 mg of (rac)-cyclopropyl{4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 23.05.01.A and Example 23.05.01.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000;

Column: IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow 30 mL/min;

Solution: 30 mg/2 mL ethanol

Injection: 4×0.5 mL

Detection: DAD @ 325 nm

Retention
purity

Optical rotation

time in min
in %
yield
[α]_D

Example
9.5-11.0
>99%
8 mg
−36.8°

23.05.01.A

(from solution

Stereoisomer A

in DMSO,

c = 2.7 mg/mL)

Example
11.2-13.5
94%
8 mg
+27.1°

23.05.01.B

(from solution

Stereoisomer B

in DMSO,

c = 2.6 mg/mL)

Example 23.05.01.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.658 (3.31), 0.666 (7.60), 0.671 (4.94), 0.685 (10.02), 0.692 (9.53), 0.700 (7.95), 0.704 (8.84), 0.711 (4.25), 1.107 (16.00), 1.231 (6.32), 1.298 (14.67), 1.314 (14.52), 1.919 (1.88), 1.926 (2.07), 1.938 (3.21), 1.951 (1.98), 1.957 (1.83), 2.323 (3.60), 2.327 (4.25), 2.331 (3.41), 2.399 (2.91), 2.523 (9.93), 2.665 (2.22), 2.669 (2.96), 2.673 (2.22), 3.458 (5.68), 3.474 (6.81), 3.678 (3.75), 4.191 (1.48), 6.975 (3.16), 7.184 (7.46), 7.433 (1.53), 7.453 (1.63), 7.619 (1.04), 7.958 (2.62), 7.980 (3.01), 8.091 (1.14), 8.225 (1.68), 8.283 (4.35), 8.296 (4.15), 8.407 (2.52), 8.753 (7.90), 8.767 (7.56), 9.166 (6.62), 10.789 (1.98), 12.306 (1.73), 12.344 (2.57).

Example 23.05.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.646 (0.67), 0.658 (2.13), 0.666 (5.11), 0.671 (3.17), 0.678 (2.57), 0.685 (6.60), 0.692 (6.27), 0.700 (5.07), 0.704 (5.82), 0.711 (2.69), 0.851 (0.78), 1.107 (16.00), 1.146 (0.63), 1.195 (0.71), 1.212 (0.90), 1.232 (4.25), 1.256 (1.04), 1.259 (1.08), 1.277 (0.97), 1.298 (10.14), 1.315 (9.85), 1.348 (0.63), 1.907 (0.63), 1.920 (1.23), 1.926 (1.38), 1.939 (2.16), 1.945 (1.12), 1.951 (1.31), 1.958 (1.19), 1.970 (0.63), 2.318 (1.79), 2.323 (2.54), 2.327 (3.10), 2.331 (2.39), 2.337 (1.38), 2.399 (1.86), 2.523 (5.15), 2.659 (0.71), 2.665 (1.60), 2.669 (2.20), 2.673 (1.60), 2.678 (0.75), 3.443 (1.38), 3.458 (3.80), 3.475 (4.44), 3.504 (1.08), 3.511 (0.86), 3.678 (2.39), 4.191 (1.53), 6.977 (2.05), 7.185 (5.07), 7.433 (0.97), 7.454 (1.04), 7.619 (0.71), 7.958 (1.72), 7.980 (1.90), 7.995 (1.12), 8.102 (0.71), 8.225 (1.12), 8.283 (2.98), 8.296 (2.80), 8.407 (1.68), 8.753 (5.74), 8.767 (5.30), 9.166 (4.44), 10.744 (0.75), 10.790 (1.12), 12.307 (0.97), 12.345 (1.45).

Example 23.05.02.A
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer A)

embedded image

Example 23.05.02.B
3,3,3-trifluoro-1-{4-[(1S or 1R)-1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer B)

embedded image

63 mg of (rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one was separated into the single stereoisomers (Example 23.05.02.A and Example 23.05.02.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak ID 5μ 250×30 mm;

Eluent A: ethanol+0.1 Vol-% diethylamine (99%); Eluent B: tert.butylmethyl ether; isocratic: 20% A+80% B;

Flow: 50.0 mL/min;

Solution: 54 mg/4.5 mL ethanol

Injection: 2×2.25 mL

Detection: UV 325 nm

Retention
purity

Optical rotation

time in min
in %
yield
[α]_D

Example
5.6-7.4
99.8%
23 mg
+10.0°

23.05.02.A

(from solution

Stereoisomer A

in DMSO,

c = 2.4 mg/mL)

Example
8.0-10.0
99.0%
23 mg
−35.6°

23.05.02.B

(from solution

Stereoisomer B

in DMSO,

c = 2.6 mg/mL)

Example 23.05.02.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (16.00), 1.295 (8.58), 1.312 (8.66), 2.323 (1.97), 2.327 (2.69), 2.332 (2.61), 2.431 (2.31), 2.523 (8.19), 2.540 (4.38), 2.665 (1.14), 2.669 (1.57), 2.674 (1.14), 3.438 (4.60), 3.476 (4.75), 3.492 (4.30), 3.582 (1.82), 3.610 (5.10), 3.637 (4.88), 3.665 (1.64), 4.195 (1.12), 6.965 (2.49), 6.977 (2.56), 7.178 (5.05), 7.951 (1.97), 7.973 (2.09), 8.283 (4.13), 8.296 (3.98), 8.754 (6.32), 8.768 (6.12), 9.166 (5.72), 9.169 (5.95).

Example 23.05.02.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (16.00), 1.295 (7.48), 1.311 (7.66), 2.323 (1.64), 2.327 (2.19), 2.332 (2.21), 2.431 (2.23), 2.523 (6.97), 2.540 (4.44), 2.669 (1.06), 3.354 (2.07), 3.438 (4.05), 3.475 (4.14), 3.582 (1.56), 3.610 (4.47), 3.637 (4.23), 3.664 (1.36), 4.194 (1.06), 6.964 (2.39), 6.978 (2.40), 7.178 (4.60), 7.951 (2.00), 7.974 (2.00), 8.283 (3.80), 8.296 (3.64), 8.754 (5.64), 8.768 (5.30), 9.166 (5.36), 9.169 (5.48).

Example 23.05.03.A
cyclobutyl{4-[(1R or 1S)-1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 23.05.03.B
cyclobutyl{4-[(1S or 1R)-1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

30 mg of (rac)-cyclobutyl{4-[1-(2-{[6-(pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 23.05.03.A and Example 23.05.03.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 30.0 mL/min;

Solution: 30 mg/2.0 mL ethanol

Injection: 4×0.5 mL

Detection: UV 325 nm

Retention
purity

Optical rotation

time in min
in %
yield
[α]_D

Example
8.5-10.0
>99.0%
10 mg
−36.1°

23.05.03.A

(from solution

Stereoisomer A

in DMSO,

c = 3.0 mg/mL)

Example
10.2-12.5
97.5%
9 mg
+35.6°

23.05.03.B

(from solution

Stereoisomer B

in DMSO,

c = 2.8 mg/mL)

Example 23.05.03.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.108 (16.00), 1.231 (2.47), 1.279 (7.41), 1.296 (7.52), 1.847 (1.63), 1.873 (1.29), 2.033 (1.94), 2.055 (2.20), 2.064 (1.71), 2.077 (1.56), 2.084 (1.52), 2.101 (2.36), 2.123 (2.43), 2.151 (1.29), 2.285 (1.67), 2.299 (1.90), 2.323 (2.32), 2.327 (2.70), 2.331 (1.86), 2.523 (5.09), 2.665 (1.56), 2.669 (2.13), 2.674 (1.48), 3.277 (1.75), 3.297 (4.03), 3.309 (3.84), 3.432 (2.74), 3.449 (3.46), 4.191 (1.56), 6.960 (1.56), 7.173 (4.03), 7.978 (1.48), 8.275 (2.36), 8.287 (2.24), 8.406 (1.25), 8.753 (4.60), 8.767 (4.37), 9.166 (3.76), 12.340 (1.29).

Example 23.05.03.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.851 (0.99), 0.967 (0.52), 1.107 (16.00), 1.135 (1.04), 1.154 (1.25), 1.172 (0.78), 1.231 (4.99), 1.259 (2.03), 1.279 (14.39), 1.295 (14.70), 1.347 (0.94), 1.694 (1.66), 1.719 (2.13), 1.742 (1.04), 1.825 (1.61), 1.846 (3.17), 1.868 (2.49), 1.873 (2.49), 1.896 (1.61), 1.918 (0.73), 2.033 (3.74), 2.041 (2.81), 2.054 (4.36), 2.064 (3.38), 2.078 (3.06), 2.084 (2.44), 2.101 (4.62), 2.123 (4.88), 2.152 (2.55), 2.175 (0.83), 2.284 (3.32), 2.297 (3.74), 2.312 (3.48), 2.323 (3.79), 2.327 (4.16), 2.331 (2.91), 2.364 (2.29), 2.403 (2.75), 2.523 (7.48), 2.665 (2.18), 2.669 (2.96), 2.673 (2.18), 2.678 (1.09), 3.256 (0.88), 3.276 (3.38), 3.297 (7.95), 3.308 (7.43), 3.432 (5.51), 3.449 (6.86), 3.504 (0.94), 3.511 (0.78), 4.191 (1.45), 6.958 (3.12), 6.969 (3.12), 7.172 (8.00), 7.431 (1.14), 7.453 (1.30), 7.619 (0.83), 7.955 (2.39), 7.978 (2.70), 8.101 (0.99), 8.224 (1.35), 8.275 (4.94), 8.287 (4.78), 8.407 (2.03), 8.753 (8.62), 8.767 (8.26), 9.166 (7.79), 10.785 (1.71), 12.301 (1.45), 12.340 (2.29).

Example 24.01.01
3,3,3-trifluoro-1-{4-[(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(2-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 252 μmol) and 3,3,3-trifluoropropanoic acid (48.3 mg, 377 μmol), Example 24.01.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 31 mg of the title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=511 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.077 (0.53), 0.102 (1.32), 0.180 (1.82), 1.466 (8.21), 2.404 (3.20), 2.416 (3.53), 2.438 (1.94), 2.811 (16.00), 3.160 (1.38), 3.185 (3.91), 3.210 (3.84), 3.235 (1.32), 3.366 (1.68), 3.381 (2.08), 3.390 (1.57), 3.427 (1.17), 3.439 (1.77), 3.516 (6.44), 3.589 (1.87), 6.974 (1.83), 6.984 (1.75), 6.987 (1.73), 7.006 (0.50), 7.137 (3.18), 7.529 (0.46), 7.548 (2.47), 7.562 (2.54), 7.642 (0.70), 7.969 (1.63), 7.972 (1.65), 7.989 (1.48), 7.993 (1.51), 8.310 (3.01), 8.323 (3.03), 8.335 (3.05), 8.339 (2.97), 8.650 (3.38), 8.664 (3.20).

Example 24.01.02
cyclobutyl{4-[(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 252 μmol) and cyclobutanecarboxylic acid (37.8 mg, 377 μmol), Example 24.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 60 mg of the title compound.

LC-MS (Method 4): R_t=1.03 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.077 (0.40), 0.102 (1.02), 0.180 (1.38), 1.831 (0.78), 1.855 (1.07), 1.878 (0.80), 1.900 (0.99), 1.922 (1.63), 1.943 (1.22), 1.949 (1.08), 1.966 (0.70), 1.971 (0.76), 1.993 (0.45), 2.062 (0.70), 2.071 (0.77), 2.092 (1.79), 2.101 (1.32), 2.113 (1.83), 2.123 (1.41), 2.137 (0.87), 2.144 (0.77), 2.265 (0.84), 2.271 (0.71), 2.287 (1.95), 2.293 (1.49), 2.309 (2.35), 2.318 (2.18), 2.339 (4.11), 2.350 (3.69), 2.362 (3.44), 2.374 (2.07), 2.812 (16.00), 3.164 (1.10), 3.185 (1.62), 3.207 (1.08), 3.249 (1.74), 3.261 (2.31), 3.273 (1.67), 3.485 (6.73), 3.542 (2.04), 6.978 (1.87), 6.981 (1.85), 6.994 (1.89), 7.006 (0.49), 7.140 (3.18), 7.529 (0.42), 7.549 (2.39), 7.562 (2.48), 7.641 (0.68), 7.971 (1.32), 7.988 (1.18), 8.298 (3.03), 8.311 (2.98), 8.336 (2.71), 8.647 (3.18), 8.661 (3.11).

Example 24.01.03
cyclopropyl{4-[(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 252 μmol) and cyclopropanecarboxylic acid (32.5 mg, 377 μmol), Example 24.01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 71 mg of the title compound.

LC-MS (Method 4): R_t=0.97 min; MS (ESIneg): m/z=467 [M−H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.102 (0.74), 0.180 (1.00), 0.717 (0.85), 0.727 (2.38), 0.734 (2.65), 0.744 (1.83), 0.747 (2.57), 0.755 (2.84), 0.764 (1.16), 0.948 (1.04), 0.957 (2.89), 0.964 (2.83), 0.969 (3.06), 0.976 (2.74), 0.986 (1.04), 1.466 (1.06), 1.639 (0.49), 1.651 (0.85), 1.658 (0.97), 1.670 (1.59), 1.682 (0.91), 1.691 (0.82), 2.383 (1.84), 2.435 (1.87), 2.812 (16.00), 3.509 (7.01), 3.539 (1.02), 3.591 (2.30), 6.988 (1.88), 6.991 (1.85), 7.001 (1.93), 7.005 (1.93), 7.152 (3.31), 7.553 (2.54), 7.567 (2.58), 7.644 (0.58), 7.969 (1.73), 7.973 (1.72), 7.989 (1.52), 7.994 (1.56), 8.306 (3.13), 8.319 (3.08), 8.342 (3.41), 8.345 (3.37), 8.643 (3.27), 8.657 (3.12).

Example 24.01.04
2-cyclopropyl-1-{4-[(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(2-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 252 μmol) and cyclopropylacetic acid (37.8 mg, 377 μmol), Example 24.01.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 81 mg of the title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.127 (1.18), 0.139 (4.30), 0.142 (3.48), 0.151 (3.83), 0.154 (4.24), 0.166 (1.49), 0.180 (0.51), 0.183 (0.50), 0.522 (1.44), 0.533 (3.27), 0.536 (3.52), 0.542 (1.92), 0.548 (1.95), 0.551 (2.40), 0.553 (3.71), 0.556 (3.60), 0.568 (1.53), 0.577 (0.47), 0.963 (0.45), 0.975 (0.76), 0.979 (0.78), 0.983 (0.74), 0.988 (0.65), 0.995 (1.27), 0.999 (0.70), 1.003 (0.65), 1.007 (0.76), 1.012 (0.78), 1.015 (0.72), 1.041 (0.61), 1.060 (1.11), 1.079 (0.52), 2.204 (6.67), 2.221 (6.57), 2.263 (0.73), 2.280 (0.70), 2.373 (5.17), 2.456 (0.58), 2.811 (16.00), 3.335 (1.87), 3.346 (2.51), 3.494 (8.02), 3.545 (2.48), 6.962 (2.23), 6.965 (2.22), 6.978 (2.27), 7.007 (0.41), 7.151 (4.02), 7.554 (3.31), 7.567 (3.40), 7.960 (2.58), 7.965 (2.60), 7.981 (2.27), 7.985 (2.37), 8.303 (4.01), 8.316 (3.93), 8.341 (3.78), 8.344 (3.77), 8.643 (3.58), 8.656 (3.45).

Example 24.02.01
cyclopropyl{4-[(2-methyl-6-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with N-[6-methyl-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-amine (75.0 mg, 181 μmol) and cyclopropanecarboxylic acid (23.4 mg, 271 μmol), Example 24.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg (32%) of the title compound.

LC-MS (Method 4): R_t=1.03 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.676 (1.26), 0.683 (2.91), 0.689 (1.83), 0.696 (1.47), 0.703 (3.59), 0.707 (3.09), 0.712 (3.33), 0.719 (2.93), 0.724 (3.46), 0.731 (1.57), 1.945 (0.71), 1.964 (1.26), 2.323 (1.41), 2.327 (2.04), 2.331 (1.83), 2.337 (1.41), 2.349 (1.39), 2.432 (1.47), 2.518 (7.54), 2.523 (5.05), 2.539 (2.28), 2.549 (2.30), 2.573 (5.16), 2.659 (1.49), 2.667 (16.00), 2.673 (2.57), 3.472 (6.36), 3.704 (1.31), 6.805 (2.44), 7.015 (1.39), 7.411 (0.97), 7.432 (1.05), 7.797 (0.94), 7.811 (1.00), 7.924 (0.92), 7.945 (0.92), 8.483 (1.34), 8.641 (3.35), 8.655 (3.25), 10.726 (1.05).

Example 24.02.02
3,3,3-trifluoro-1-{4-[(2-methyl-6-{[6-(2-methyl pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with N-[6-methyl-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-amine (75.0 mg, 181 μmol) and 3,3,3-trifluoropropanoic acid (34.8 mg, 271 μmol), Example 24.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg (29%) of the title compound.

LC-MS (Method 4): R_t=1.07 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.323 (1.29), 2.327 (1.77), 2.331 (1.29), 2.357 (1.48), 2.369 (2.17), 2.382 (1.64), 2.409 (2.09), 2.518 (7.60), 2.523 (4.99), 2.540 (1.64), 2.546 (2.38), 2.571 (5.10), 2.667 (16.00), 2.674 (2.22), 3.474 (7.16), 3.502 (1.98), 3.608 (0.92), 3.635 (2.59), 3.662 (2.46), 3.690 (0.77), 4.045 (1.21), 6.796 (2.30), 7.010 (1.35), 7.410 (0.95), 7.432 (1.03), 7.797 (0.95), 7.811 (1.00), 7.924 (0.92), 7.945 (0.92), 8.480 (1.40), 8.641 (3.51), 8.655 (3.17), 10.724 (1.19), 12.094 (1.08).

Example 24.03.01
cyclopropyl(4-{[2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 4-chloro-2-methylpyrimidine (81.1 mg, 631 μmol), and cyclopropyl(4-{[2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone (200 mg, 351 μmol) in Dioxane (1.7 mL) and water (340 μl) was added sodium carbonate (111 mg, 1.05 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(42.9 mg, 52.6 μmol). The mixture was heated to reflux for 19 h. Dichloromethane was added, the mixture was filtered and, the solvent was removed in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 20.0 mg (10% yield) of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=537 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.725 (4.36), 0.951 (5.34), 1.261 (1.93), 1.284 (6.51), 1.648 (2.11), 2.388 (3.45), 2.793 (3.68), 2.845 (16.00), 3.560 (7.24), 7.582 (2.62), 7.985 (1.62), 8.348 (0.99), 8.675 (3.91), 8.688 (3.75), 11.977 (2.41).

Example 24.04.01
(rac)-cyclopropyl{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(2-methylpyrimidin-4-yl)-N-{4-[(1R)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (207 mg, 499 μmol) and cyclopropanecarboxylic acid (64.5 mg, 749 μmol), Example 24.04.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 53.0 mg (22%) of the title compound.

LC-MS (Method 4): R_t=1.01 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (1.22), 0.664 (2.91), 0.669 (1.82), 0.676 (1.42), 0.683 (3.51), 0.687 (3.01), 0.691 (3.35), 0.698 (2.83), 0.704 (3.29), 0.711 (1.55), 1.296 (5.42), 1.312 (5.54), 1.936 (1.21), 2.083 (0.77), 2.327 (0.91), 2.665 (16.00), 3.453 (2.09), 3.469 (2.63), 3.676 (1.35), 6.966 (1.55), 6.980 (1.59), 7.196 (1.71), 7.920 (1.57), 7.924 (1.67), 7.941 (1.45), 7.945 (1.50), 8.271 (2.87), 8.284 (2.76), 8.639 (3.72), 8.653 (3.53).

Example 24.04.02
(rac)-cyclobutyl{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(2-methylpyrimidin-4-yl)-N-{4-[(1R)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (207 mg, 499 μmol) and cyclobutanecarboxylic acid (75.0 mg, 749 μmol), Example 24.04.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 56.5 mg (22%) of the title compound.

LC-MS (Method 4): R_t=1.08 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.274 (5.70), 1.291 (5.90), 1.843 (1.23), 1.865 (0.93), 1.870 (0.97), 2.029 (1.44), 2.038 (1.07), 2.051 (1.67), 2.060 (1.29), 2.075 (1.12), 2.081 (0.96), 2.099 (1.80), 2.120 (1.86), 2.150 (0.97), 2.279 (1.27), 2.293 (1.44), 2.307 (1.40), 2.397 (1.03), 2.665 (16.00), 3.271 (1.23), 3.293 (2.89), 3.304 (2.46), 3.314 (2.50), 3.424 (2.30), 3.442 (2.95), 6.950 (1.33), 6.963 (1.36), 7.167 (1.66), 7.922 (1.32), 7.943 (1.22), 8.264 (2.98), 8.277 (2.83), 8.639 (4.06), 8.653 (3.78).

Example 24.04.03
(rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-(2-methylpyrimidin-4-yl)-N-{4-[(1R)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (207 mg, 499 μmol) and 3,3,3-trifluoropropanoic acid (95.9 mg, 749 μmol), Example 24.04.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 115 mg (41%) of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.293 (5.27), 1.309 (5.41), 2.327 (1.20), 2.343 (1.21), 2.366 (0.97), 2.417 (1.27), 2.429 (1.45), 2.665 (16.00), 3.424 (1.41), 3.436 (2.49), 3.449 (1.67), 3.470 (2.84), 3.487 (2.83), 3.580 (0.95), 3.608 (2.71), 3.635 (2.57), 3.662 (0.90), 6.960 (1.47), 6.973 (1.50), 7.174 (2.46), 7.922 (1.56), 7.926 (1.63), 7.943 (1.43), 7.947 (1.47), 8.272 (2.73), 8.285 (2.58), 8.640 (3.83), 8.654 (3.63).

Example 24.04.04
(rac)-2-cyclopropyl-1-{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone

embedded image

Starting with (rac)-6-(2-methylpyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (207 mg, 499 μmol) and cyclopropylacetic acid (75.0 mg, 749 μmol), Example 24.04.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 40.4 mg (16%) of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.93), 0.011 (3.18), 0.014 (2.97), 0.023 (3.21), 0.026 (3.07), 0.037 (1.01), 0.331 (1.07), 0.341 (2.69), 0.345 (2.83), 0.351 (1.42), 0.356 (1.36), 0.361 (2.93), 0.365 (2.82), 0.376 (1.02), 0.851 (1.04), 1.220 (5.74), 1.237 (5.79), 2.145 (5.05), 2.162 (4.94), 2.262 (1.81), 2.266 (1.58), 2.338 (1.68), 2.457 (1.95), 2.599 (16.00), 3.358 (2.86), 3.375 (2.97), 3.392 (3.10), 6.895 (1.23), 7.108 (1.56), 7.858 (1.19), 7.878 (1.05), 8.202 (2.97), 8.216 (2.85), 8.353 (1.01), 8.575 (4.14), 8.589 (3.90).

Example 24.05.01.A
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer A)

embedded image

Example 24.05.01.B
3,3,3-trifluoro-1-{4-[(1S or 1R)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer B)

embedded image

110 mg of (rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one was separated into the single stereoisomers (Example 24.05.01.A and Example 23.05.01.B) via preparative, chiral HPLC.

Instrument: Sepiatec: Prep SFC100,

Column: Chiralpak IC 5μ 250×30 mm;

Eluent A CO₂, Eluent B: methanol+0.4 Vol-% diethylamine (99%); isocratic: 53% B;

Flow 100.0 mL/min;

Temperature: 40° C.;

Backpressure: 150 bar;

Solution: 110 mg/2 mL dichloromethane/methanol 1:1

Injection: 9×0.25 mL

Detection: MWD @ 254 nm

Retention
purity

Optical rotation

time in min
in %
yield
[α]_D

Example
6.0-7.5
>99.9%
35 mg
+31.5°

24.05.01.A

(from solution

Stereoisomer A

in DMSO,

c = 2.6 mg/mL)

Example
7.5-10.0
99.43%
35 mg
−38.7°

24.05.01.B

(from solution

Stereoisomer B

in DMSO,

c = 2.8 mg/mL)

Example 24.05.01.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (12.79), 1.133 (0.93), 1.143 (0.81), 1.151 (1.79), 1.161 (1.09), 1.169 (0.89), 1.293 (5.46), 1.309 (5.51), 2.250 (1.99), 2.323 (1.04), 2.327 (1.52), 2.332 (1.39), 2.337 (1.23), 2.417 (1.33), 2.429 (1.52), 2.523 (1.58), 2.665 (16.00), 2.673 (1.39), 3.437 (2.72), 3.447 (2.03), 3.470 (2.92), 3.487 (2.98), 3.503 (1.02), 3.582 (1.04), 3.609 (2.87), 3.637 (2.70), 3.664 (0.87), 6.958 (1.31), 6.972 (1.34), 7.182 (1.82), 7.925 (1.31), 7.946 (1.16), 8.271 (2.85), 8.285 (2.71), 8.640 (3.90), 8.654 (3.57).

Example 24.05.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.966 (0.53), 1.107 (14.94), 1.143 (0.62), 1.293 (6.06), 1.309 (6.15), 2.318 (0.98), 2.323 (1.39), 2.327 (2.01), 2.332 (1.82), 2.337 (1.51), 2.344 (1.46), 2.366 (1.18), 2.417 (1.58), 2.429 (1.84), 2.442 (1.32), 2.458 (1.18), 2.523 (2.99), 2.665 (16.00), 2.673 (1.99), 3.424 (1.72), 3.437 (3.02), 3.449 (2.01), 3.470 (3.26), 3.487 (3.36), 3.503 (1.29), 3.582 (1.13), 3.609 (3.16), 3.637 (2.99), 3.664 (0.94), 4.194 (1.29), 6.965 (1.37), 7.167 (1.87), 7.414 (0.76), 7.435 (0.79), 7.771 (0.79), 7.785 (0.82), 7.925 (1.22), 7.946 (1.08), 8.203 (0.69), 8.272 (3.09), 8.285 (2.94), 8.421 (1.24), 8.641 (4.26), 8.654 (3.86), 10.787 (0.91), 12.368 (0.98).

Example 24.05.02.A
cyclobutyl{4-[(1R or 1S)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 24.05.02.B
cyclobutyl{4-[(1S or 1R)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

61.9 mg of (rac)-cyclobutyl{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 24.05.02.A and Example 23.05.02.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow 30.0 mL/min;

Solution: 61 mg/2.5 mL ethanol

Injection: 5×0.5 mL

Detection: UV @ 325 nm

Retention
purity

Optical rotation

time in min
in %
yield
[α]_D

Example
10.1-12.0
>99.0%
25 mg
−38.5°

24.05.02.A

(from solution

Stereoisomer A

in DMSO,

c = 2.6 mg/mL)

Example
12.1-14.9
93.7%
27 mg
+26.7°

24.05.02.6

(from solution

Stereoisomer B

in DMSO,

c = 2.6 mg/mL)

Example 24.05.02.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (12.20), 1.232 (1.31), 1.277 (5.97), 1.294 (6.07), 1.846 (1.28), 1.873 (0.98), 2.032 (1.48), 2.054 (1.74), 2.063 (1.31), 2.076 (1.18), 2.100 (1.80), 2.122 (1.90), 2.152 (0.95), 2.282 (1.34), 2.297 (1.51), 2.323 (1.38), 2.327 (1.44), 2.331 (0.98), 2.393 (1.08), 2.523 (2.79), 2.665 (16.00), 2.673 (1.77), 3.276 (1.31), 3.296 (3.15), 3.308 (3.05), 3.319 (3.93), 3.428 (2.36), 3.445 (2.92), 4.193 (1.21), 6.957 (1.28), 7.162 (1.54), 7.924 (1.08), 7.945 (0.95), 8.264 (3.02), 8.278 (2.89), 8.418 (1.15), 8.641 (4.26), 8.654 (4.00), 12.364 (1.11).

Example 24.05.02.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (8.76), 1.231 (1.53), 1.258 (0.70), 1.276 (6.00), 1.293 (6.28), 1.693 (0.76), 1.719 (0.93), 1.824 (0.67), 1.845 (1.26), 1.872 (1.15), 1.895 (0.71), 2.031 (1.66), 2.040 (1.31), 2.053 (1.92), 2.062 (1.57), 2.078 (1.38), 2.083 (1.15), 2.100 (2.01), 2.121 (2.05), 2.151 (1.16), 2.283 (1.51), 2.296 (1.74), 2.310 (1.63), 2.322 (1.24), 2.326 (1.19), 2.362 (1.08), 2.377 (1.08), 2.399 (1.32), 2.522 (2.92), 2.665 (16.00), 3.275 (1.42), 3.296 (3.52), 3.307 (3.28), 3.317 (3.85), 3.410 (0.80), 3.428 (2.53), 3.445 (3.27), 4.192 (0.93), 6.953 (1.53), 6.965 (1.58), 7.164 (1.90), 7.414 (0.55), 7.434 (0.62), 7.783 (0.71), 7.925 (1.47), 7.945 (1.32), 8.264 (2.95), 8.278 (2.89), 8.421 (0.94), 8.640 (3.66), 8.653 (3.42), 10.773 (0.76), 12.283 (0.54), 12.365 (0.99).

Example 24.05.03.A
2-cyclopropyl-1-{4-[(1R or 1S)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone (single stereoisomer A)

embedded image

Example 24.05.03.B
2-cyclopropyl-1-{4-[(1S or 1R)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone (single stereoisomer B)

embedded image

72 mg of (rac)-2-cyclopropyl-1-{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone was separated into the single stereoisomers (Example 24.05.03.A and Example 23.05.03.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IC 5μ 250×30 mm;

Eluent A: methanol+0.1 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 50% A+50% B;

Flow 50.0 mL/min;

Solution: 72 mg/4.0 mL dichloromethane/methanol 1:1

Injection: 4×1.0 mL

Detection: UV @ 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
10.5-11.5
>99.0%
34 mg
+42.2°

24.05.03.A

(from solution in

Stereoisomer A

DMSO, c = 2.8

mg/mL)

Example
11.5-12.5
95.0%
24 mg
−40.1°

24.05.03.B

(from solution in

Stereoisomer B

DMSO, c = 3.0

mg/mL)

Example 24.05.03.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.89), 0.011 (3.11), 0.014 (2.93), 0.023 (3.20), 0.026 (3.02), 0.037 (1.07), 0.331 (1.07), 0.341 (2.76), 0.345 (2.84), 0.352 (1.42), 0.356 (1.42), 0.362 (2.93), 0.366 (2.84), 0.376 (1.07), 0.830 (0.98), 0.846 (0.98), 0.851 (1.16), 1.042 (8.00), 1.165 (0.89), 1.220 (5.69), 1.237 (5.78), 1.982 (1.42), 2.145 (5.16), 2.162 (4.98), 2.183 (0.89), 2.253 (1.42), 2.257 (1.87), 2.262 (2.22), 2.267 (1.87), 2.271 (1.16), 2.338 (1.60), 2.353 (1.42), 2.367 (1.07), 2.453 (5.16), 2.458 (3.29), 2.584 (0.80), 2.600 (16.00), 2.608 (1.87), 3.346 (1.69), 3.358 (3.02), 3.375 (2.93), 3.392 (3.02), 3.405 (1.87), 3.450 (1.51), 3.756 (1.24), 4.134 (0.71), 6.898 (1.24), 7.099 (1.51), 7.347 (0.71), 7.369 (0.80), 7.705 (0.80), 7.719 (0.80), 7.860 (1.07), 7.882 (0.89), 8.204 (2.93), 8.216 (2.76), 8.353 (1.16), 8.576 (4.62), 8.589 (4.18), 10.716 (0.89), 12.304 (0.98).

Example 24.05.03.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.85), 0.011 (3.08), 0.014 (2.83), 0.023 (3.18), 0.026 (2.95), 0.037 (1.05), 0.331 (1.03), 0.341 (2.72), 0.345 (2.80), 0.351 (1.46), 0.356 (1.34), 0.361 (2.88), 0.366 (2.77), 0.376 (1.00), 0.830 (0.67), 0.834 (0.67), 0.838 (0.64), 0.851 (1.05), 0.862 (0.57), 0.867 (0.62), 0.871 (0.54), 0.901 (0.62), 1.042 (3.78), 1.078 (0.46), 1.165 (0.95), 1.220 (5.57), 1.236 (5.62), 2.144 (4.91), 2.161 (4.83), 2.183 (0.69), 2.253 (1.18), 2.257 (1.34), 2.262 (1.54), 2.267 (1.31), 2.279 (0.85), 2.337 (1.59), 2.351 (1.44), 2.365 (1.03), 2.458 (2.05), 2.600 (16.00), 2.608 (1.39), 3.358 (2.88), 3.374 (2.98), 3.391 (3.08), 6.895 (1.21), 6.905 (1.18), 7.102 (1.62), 7.349 (0.54), 7.369 (0.62), 7.719 (0.64), 7.858 (1.16), 7.879 (1.03), 8.203 (2.95), 8.216 (2.77), 8.353 (0.95), 8.575 (4.24), 8.589 (4.03), 10.717 (0.69), 12.308 (0.74).

Example 24.05.04.A
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 24.05.04.B
cyclopropyl{4-[(1S or 1R)-1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

49.6 mg of (rac)-cyclopropyl{4-[1-(2-{[6-(2-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 24.05.04.A and Example 23.05.04.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 80% A+20% B;

Flow 30.0 mL/min;

Solution: 49 mg/2.5 mL ethanol

Injection: 5×0.5 mL

Detection: UV @ 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
10.8-12.3
>99.0%
18 mg
−43.7°

24.05.04.A

(from solution in

Stereoisomer A

DMSO, c = 3.0

mg/mL)

Example
12.5-14.9
95.9%
16 mg
+45.3°

24.05.04.B

(from solution in

Stereoisomer B

DMSO, c = 2.8

mg/mL)

Example 24.05.04.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.664 (3.07), 0.684 (3.95), 0.691 (3.88), 0.698 (3.14), 0.703 (3.51), 0.710 (1.66), 1.106 (8.08), 1.228 (1.06), 1.295 (5.73), 1.312 (5.73), 1.917 (0.74), 1.937 (1.29), 2.326 (1.09), 2.394 (1.11), 2.462 (1.22), 2.522 (2.05), 2.665 (16.00), 3.304 (1.04), 3.326 (2.42), 3.377 (0.83), 3.382 (0.74), 3.454 (2.24), 3.469 (2.82), 3.677 (1.57), 4.198 (0.85), 6.968 (1.45), 6.980 (1.45), 7.175 (2.03), 7.925 (1.41), 7.944 (1.27), 8.273 (2.91), 8.286 (2.77), 8.640 (3.74), 8.654 (3.53).

Example 24.05.04.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.657 (1.37), 0.665 (3.23), 0.670 (2.11), 0.677 (1.69), 0.684 (4.20), 0.691 (4.03), 0.699 (3.26), 0.703 (3.69), 0.711 (1.66), 0.966 (0.51), 1.107 (10.23), 1.143 (0.40), 1.149 (0.40), 1.230 (0.89), 1.258 (0.69), 1.295 (6.09), 1.312 (6.03), 1.919 (0.74), 1.926 (0.86), 1.938 (1.31), 1.950 (0.80), 1.957 (0.69), 2.322 (1.29), 2.327 (1.46), 2.332 (1.11), 2.397 (1.20), 2.523 (2.83), 2.665 (16.00), 3.454 (2.43), 3.470 (3.09), 3.677 (1.63), 4.197 (1.06), 6.970 (1.31), 7.172 (1.74), 7.414 (0.69), 7.435 (0.74), 7.772 (0.74), 7.785 (0.77), 7.925 (1.20), 7.946 (1.06), 8.202 (0.63), 8.273 (3.09), 8.286 (2.91), 8.420 (1.17), 8.640 (4.11), 8.654 (3.83), 10.739 (0.49), 10.785 (0.91), 12.290 (0.60), 12.373 (1.11).

Example 25.01.01
tert-butyl 4-[(2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-bromo-2-methoxypyrimidine (248 mg, 1.31 mmol), Example 25.01.01 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 19.0 mg (4%) of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=517 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.396 (16.00), 2.360 (1.40), 2.372 (1.01), 2.523 (2.96), 3.349 (1.41), 3.506 (1.68), 4.006 (2.25), 8.561 (1.33), 8.575 (1.21).

Example 25.01.02
cyclobutyl{4-[(2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (115 mg) and cyclobutanecarboxylic acid (38.1 mg, 381 μmol), Example 25.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 2.50 mg of the title compound.

LC-MS (Method 4): R_t=1.08 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.230 (0.96), 1.734 (1.42), 1.840 (0.92), 1.862 (1.82), 1.884 (1.63), 1.912 (1.02), 2.052 (2.56), 2.074 (3.02), 2.100 (2.44), 2.123 (3.39), 2.144 (3.36), 2.173 (1.82), 2.323 (2.16), 2.327 (2.99), 2.332 (3.05), 2.355 (6.10), 2.523 (10.76), 2.539 (3.39), 2.665 (1.39), 2.669 (1.88), 2.673 (1.45), 3.169 (1.11), 3.304 (2.71), 3.477 (3.73), 3.506 (7.00), 3.896 (0.83), 3.955 (1.02), 3.973 (1.26), 4.003 (16.00), 6.548 (0.65), 6.943 (1.88), 6.955 (2.03), 7.189 (3.08), 7.617 (0.92), 7.937 (1.66), 7.955 (1.57), 8.271 (2.47), 8.284 (2.47), 8.561 (4.47), 8.574 (4.32).

Example 25.01.03
2-cyclopropyl-1-{4-[(2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(2-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (115 mg) and cyclopropylacetic acid (38.1 mg, 381 μmol), Example 25.01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 15.0 mg of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (1.65), 0.011 (5.58), 0.014 (5.26), 0.023 (5.66), 0.027 (5.23), 0.037 (2.05), 0.331 (2.05), 0.340 (4.93), 0.345 (5.38), 0.351 (2.75), 0.355 (2.65), 0.361 (5.38), 0.365 (5.23), 0.376 (2.13), 0.834 (1.10), 0.838 (1.10), 0.842 (1.08), 0.847 (0.88), 0.854 (1.90), 0.858 (1.00), 0.862 (0.88), 0.867 (1.03), 0.871 (1.08), 0.874 (1.03), 2.154 (8.99), 2.171 (8.91), 2.239 (1.15), 2.243 (1.68), 2.248 (1.33), 2.253 (0.90), 2.279 (3.76), 2.291 (3.46), 2.311 (3.81), 2.434 (8.39), 2.439 (5.93), 2.455 (1.28), 2.581 (1.08), 2.585 (1.55), 2.589 (1.13), 3.372 (3.71), 3.384 (3.36), 3.407 (3.68), 3.431 (10.17), 3.920 (16.00), 6.868 (1.90), 7.109 (3.08), 7.334 (0.88), 7.356 (0.98), 7.526 (1.40), 7.853 (1.60), 7.873 (1.43), 8.125 (0.80), 8.192 (2.23), 8.204 (2.15), 8.325 (1.48), 8.477 (8.36), 8.491 (7.46), 10.731 (0.90), 12.218 (0.88), 12.260 (1.53).

Example 25.01.04
3,3,3-trifluoro-1-{4-[(2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(2-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (115 mg) and 3,3,3-trifluoropropanoic acid (48.8 mg, 381 μmol), Example 25.01.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.075 (4.09), 2.322 (1.23), 2.327 (1.83), 2.332 (1.35), 2.336 (0.66), 2.371 (2.58), 2.383 (4.06), 2.396 (3.02), 2.425 (3.75), 2.437 (3.06), 2.518 (10.58), 2.523 (7.72), 2.539 (2.02), 2.665 (1.29), 2.669 (1.86), 2.673 (1.35), 3.473 (3.50), 3.484 (3.24), 3.510 (3.91), 3.530 (10.90), 3.613 (1.67), 3.640 (4.79), 3.667 (4.54), 3.695 (1.45), 4.005 (16.00), 4.050 (3.15), 6.953 (1.98), 7.196 (3.40), 7.419 (0.98), 7.441 (1.07), 7.610 (1.57), 7.937 (1.67), 7.958 (1.45), 8.209 (0.94), 8.278 (2.27), 8.290 (2.14), 8.409 (1.64), 8.561 (8.79), 8.575 (8.16), 10.817 (1.07), 12.342 (1.29).

Example 25.01.05
cyclopropyl{4-[(2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (115 mg) and cyclopropanecarboxylic acid (32.8 mg, 381 μmol), Example 25.01.05 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 27.0 mg of the title compound.

LC-MS (Method 4): R_t=1.01 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.665 (0.77), 0.677 (2.26), 0.684 (5.32), 0.690 (3.32), 0.697 (2.64), 0.704 (6.64), 0.708 (5.56), 0.713 (5.96), 0.720 (5.63), 0.726 (6.46), 0.733 (3.03), 0.745 (0.81), 1.948 (1.25), 1.955 (1.32), 1.967 (2.29), 1.973 (1.08), 1.979 (1.30), 1.986 (1.19), 2.323 (1.08), 2.327 (1.54), 2.332 (1.30), 2.337 (0.92), 2.366 (2.46), 2.447 (2.51), 2.518 (7.78), 2.523 (5.67), 2.539 (3.19), 2.665 (0.95), 2.669 (1.36), 2.673 (0.97), 3.510 (2.57), 3.528 (10.70), 3.709 (2.42), 3.950 (0.84), 4.004 (16.00), 6.959 (1.85), 7.202 (3.05), 7.420 (0.84), 7.441 (0.95), 7.611 (1.36), 7.938 (1.60), 7.958 (1.47), 8.211 (0.79), 8.279 (2.29), 8.292 (2.20), 8.411 (1.41), 8.561 (8.92), 8.575 (8.04), 10.821 (0.79), 12.305 (0.81), 12.347 (1.41).

Example 25.02.01
cyclopropyl(4-{[2-{[6-(2-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with cyclopropyl(4-{[2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}-6-(trifluoromethyl)pyridin-4-yl]methyl}piperazin-1-yl)methanone (200 mg, 351 μmol) and 4-bromo-2-methoxypyrimidine (119 mg, 631 μmol), Example 25.02.01 was prepared analogously to the procedure for the preparation of Example 24.03.01.

Yield: 33.0 mg (15%) of the title compound.

LC-MS (Method 4): R_t=1.18 min; MS (ESIpos): m/z=553 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) [ppm]: 0.738 (2.47), 0.951 (2.97), 1.622 (1.97), 2.397 (1.97), 3.565 (4.59), 4.083 (1.72), 4.147 (16.00), 4.263 (0.69), 7.006 (0.87), 7.292 (1.72), 7.428 (1.37), 7.529 (1.14), 7.571 (0.95), 7.601 (0.94), 8.560 (3.36), 8.573 (3.20), 11.967 (2.47).

Example 26.01.01
tert-butyl 4-[(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-chloro-2-ethoxypyrimidine (267 mg, 1.68 mmol), Example 26.01.01 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 16.5 mg (3%) of the title compound.

LC-MS (Method 4): R_t=1.31 min; MS (ESIpos): m/z=531 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.377 (0.99), 1.396 (16.00), 1.412 (1.11), 2.360 (1.23), 2.518 (1.68), 3.506 (1.45), 8.545 (1.22), 8.558 (1.11).

Example 26.01.02
cyclopropyl{4-[(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-ethoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg) and cyclopropanecarboxylic acid (26.5 mg, 308 μmol), Example 26.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 28.0 mg of the title compound.

LC-MS (Method 4): R_t=1.09 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.667 (0.93), 0.678 (2.78), 0.686 (6.61), 0.691 (3.92), 0.698 (3.26), 0.705 (8.15), 0.710 (6.83), 0.715 (7.23), 0.722 (6.74), 0.727 (7.67), 0.734 (3.44), 1.244 (1.10), 1.377 (7.54), 1.395 (16.00), 1.412 (7.67), 1.948 (1.54), 1.955 (1.63), 1.968 (2.78), 1.980 (1.54), 1.987 (1.41), 2.322 (2.07), 2.327 (2.87), 2.332 (2.12), 2.336 (1.37), 2.365 (3.00), 2.444 (2.95), 2.518 (11.11), 2.523 (7.36), 2.660 (0.79), 2.665 (1.85), 2.669 (2.64), 2.674 (1.85), 2.679 (0.84), 3.529 (13.18), 3.709 (2.82), 4.448 (3.88), 4.466 (3.79), 6.962 (2.34), 7.204 (3.39), 7.437 (1.28), 7.599 (1.90), 7.923 (1.72), 8.194 (1.15), 8.282 (2.56), 8.399 (1.98), 8.545 (10.27), 8.559 (9.26), 10.811 (1.19), 12.334 (1.23).

Example 26.01.03
1-{4-[(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(2-ethoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg) and 3,3,3-trifluoropropanoic acid (39.5 mg, 308 μmol), Example 26.01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 26.7 mg of the title compound.

LC-MS (Method 4): R_t=1.12 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.244 (0.91), 1.377 (7.64), 1.395 (16.00), 1.412 (7.76), 2.322 (1.70), 2.327 (2.34), 2.332 (1.66), 2.336 (0.83), 2.372 (3.21), 2.385 (4.91), 2.396 (3.68), 2.426 (4.67), 2.518 (10.10), 2.523 (6.69), 2.660 (0.71), 2.665 (1.66), 2.669 (2.34), 2.674 (1.62), 2.679 (0.75), 3.473 (4.44), 3.485 (3.96), 3.510 (4.75), 3.530 (13.19), 3.611 (2.18), 3.638 (6.26), 3.666 (5.86), 3.693 (1.90), 4.048 (2.46), 4.448 (3.92), 4.466 (3.84), 6.955 (2.46), 7.198 (4.51), 7.415 (1.27), 7.436 (1.43), 7.584 (2.06), 7.599 (2.10), 7.690 (0.87), 7.925 (1.90), 8.193 (1.27), 8.280 (2.69), 8.398 (2.18), 8.545 (10.85), 8.559 (9.82), 10.807 (1.39), 12.327 (1.47).

Example 26.01.04
cyclobutyl{4-[(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-ethoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg) and cyclobutanecarboxylic acid (30.9 mg, 308 μmol), Example 26.01.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 12.0 mg of the title compound.

LC-MS (Method 4): R_t=1.15 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.244 (1.18), 1.377 (5.97), 1.395 (12.39), 1.412 (6.03), 1.736 (1.51), 1.841 (1.25), 1.863 (2.49), 1.889 (1.84), 1.913 (1.11), 2.054 (2.75), 2.076 (3.15), 2.085 (2.49), 2.101 (2.03), 2.124 (3.67), 2.146 (3.93), 2.176 (2.03), 2.322 (3.08), 2.327 (4.39), 2.332 (3.74), 2.354 (7.61), 2.518 (16.00), 2.523 (10.56), 2.660 (1.31), 2.665 (2.82), 2.669 (4.00), 2.674 (2.62), 2.679 (1.25), 3.304 (3.02), 3.346 (5.77), 3.477 (3.80), 3.505 (11.41), 4.450 (3.34), 4.467 (3.21), 6.948 (2.43), 7.187 (3.08), 7.434 (1.51), 7.584 (2.16), 7.599 (2.30), 7.928 (1.90), 8.192 (1.44), 8.275 (2.62), 8.398 (2.36), 8.545 (8.92), 8.558 (8.26), 10.801 (1.77), 12.326 (2.23).

Example 26.01.05
2-cyclopropyl-1-{4-[(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(2-ethoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg) and cyclopropylacetic acid (30.9 mg, 308 μmol), Example 26.01.05 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 4): R_t=1.12 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.001 (1.95), 0.011 (6.92), 0.015 (6.18), 0.023 (7.13), 0.027 (6.39), 0.037 (2.29), 0.330 (2.42), 0.340 (6.18), 0.345 (6.32), 0.350 (3.23), 0.355 (2.96), 0.361 (6.39), 0.365 (6.12), 0.376 (2.29), 0.855 (2.22), 1.159 (1.28), 1.292 (6.72), 1.310 (13.98), 1.327 (6.79), 2.154 (11.09), 2.171 (10.69), 2.238 (3.09), 2.242 (4.17), 2.247 (2.96), 2.252 (1.68), 2.278 (4.71), 2.433 (16.00), 2.438 (10.69), 2.580 (2.89), 2.584 (3.97), 2.589 (2.76), 3.430 (12.44), 4.365 (3.63), 4.382 (3.50), 6.869 (2.55), 7.109 (3.50), 7.329 (1.55), 7.350 (1.68), 7.500 (2.35), 7.514 (2.42), 7.845 (1.95), 8.109 (1.55), 8.194 (2.82), 8.314 (2.55), 8.460 (9.82), 8.473 (8.94), 10.721 (1.75), 12.245 (2.02).

Example 26.02.01
(rac)-1-{4-[1-(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude (rac)-6-(2-ethoxypyrimidin-4-yl)-N-{4-[(1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (370 mg) and 3,3,3-trifluoropropanoic acid (70.5 mg, 551 μmol), Example 26.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 105 mg of the title compound.

LC-MS (Method 4): R_t=1.15 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.297 (6.52), 1.305 (10.05), 1.314 (7.71), 1.322 (9.47), 1.356 (1.44), 1.373 (1.40), 1.466 (4.21), 1.484 (8.88), 1.502 (5.01), 1.508 (8.01), 1.526 (16.00), 1.543 (7.78), 1.624 (2.03), 2.320 (3.70), 2.409 (2.30), 3.126 (2.47), 3.150 (7.30), 3.176 (7.13), 3.201 (2.38), 3.211 (1.14), 3.236 (0.99), 3.293 (4.83), 3.338 (2.90), 3.354 (2.50), 3.475 (3.16), 4.261 (0.72), 4.266 (0.72), 4.502 (1.26), 4.520 (4.03), 4.538 (5.49), 4.557 (7.95), 4.575 (6.97), 4.592 (2.14), 4.725 (0.74), 4.730 (0.77), 6.909 (1.79), 6.922 (2.08), 6.929 (3.10), 6.946 (2.87), 7.006 (1.13), 7.018 (3.13), 7.053 (5.00), 7.397 (8.94), 7.411 (9.45), 7.528 (0.99), 7.544 (2.59), 7.565 (2.98), 7.679 (3.57), 7.700 (4.03), 7.987 (1.73), 7.991 (1.84), 8.008 (4.40), 8.012 (4.55), 8.029 (2.54), 8.034 (2.53), 8.292 (2.57), 8.305 (3.28), 8.310 (6.26), 8.314 (6.73), 8.318 (6.31), 8.324 (5.52), 8.401 (2.92), 8.509 (3.15), 8.523 (3.54), 8.528 (6.02), 8.540 (5.45), 12.465 (2.26).

Example 26.03.01.A
1-{4-[(1R or 1S)-1-(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one (single stereoisomer A)

embedded image

Example 26.03.01.B
1-{4-[(1S or 1R)-1-(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one (single stereoisomer B)

embedded image

105 mg of (rac)-1-{4-[1-(2-{[6-(2-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one was separated into the single stereoisomers (Example 26.03.01.A and Example 26.03.01.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IE 5μ 250×30 mm;

Eluent A: tert.-butyl methyl ether+0.1 Vol-% diethylamine (99%);

Eluent B: methanol; isocratic: 90% A+10% B;

Flow: 50.0 mL/min;

Solution: 105 mg/3.0 mL ethanol

Injection: 3×1.0 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
5.5-7.6
>99.0%
39 mg
−37.3°

26.03.01.A

(from solution in

Stereoisomer A

DMSO, c = 2.5

mg/mL)

Example
8.5-11.8
97.1%
38 mg
+29.9°

26.03.01.B

(from solution in

Stereoisomer B

DMSO, c = 3.8

mg/mL)

Example 26.03.01.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.967 (0.77), 1.107 (12.34), 1.230 (1.74), 1.294 (12.58), 1.310 (12.42), 1.376 (7.64), 1.394 (16.00), 1.411 (7.80), 2.318 (1.84), 2.323 (2.32), 2.327 (3.31), 2.331 (3.31), 2.345 (2.75), 2.367 (2.19), 2.419 (3.05), 2.430 (3.42), 2.444 (2.46), 2.458 (2.00), 2.523 (3.55), 2.665 (1.15), 2.669 (1.60), 2.674 (1.12), 3.424 (3.31), 3.437 (5.88), 3.449 (3.79), 3.473 (6.14), 3.490 (5.88), 3.581 (2.27), 3.608 (6.46), 3.636 (6.09), 3.663 (1.92), 4.192 (1.18), 4.448 (4.01), 4.465 (3.87), 6.967 (2.64), 7.177 (4.94), 7.414 (1.42), 7.434 (1.50), 7.586 (2.30), 7.599 (2.19), 7.690 (0.99), 7.927 (2.03), 7.945 (1.58), 8.192 (1.36), 8.284 (2.78), 8.400 (2.32), 8.545 (9.24), 8.558 (8.65), 10.797 (1.71), 12.301 (1.42), 12.335 (2.38).

Example 26.03.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.962 (0.65), 1.103 (8.33), 1.148 (0.78), 1.178 (0.86), 1.225 (2.61), 1.289 (12.10), 1.305 (12.06), 1.372 (7.80), 1.389 (16.00), 1.407 (7.84), 2.323 (3.04), 2.327 (3.12), 2.340 (2.86), 2.363 (2.31), 2.414 (3.10), 2.425 (3.53), 2.439 (2.61), 2.454 (2.20), 2.660 (0.94), 2.665 (1.27), 2.669 (0.92), 3.421 (3.41), 3.433 (6.04), 3.445 (3.88), 3.468 (6.27), 3.485 (6.16), 3.576 (2.18), 3.604 (6.25), 3.631 (5.92), 3.658 (1.90), 4.187 (0.78), 4.426 (1.59), 4.443 (4.35), 4.460 (4.24), 4.477 (1.47), 6.963 (2.67), 7.173 (5.25), 7.410 (1.25), 7.430 (1.37), 7.581 (2.10), 7.595 (2.08), 7.684 (0.86), 7.920 (2.04), 8.187 (1.24), 8.278 (2.94), 8.290 (2.67), 8.396 (2.16), 8.540 (8.18), 8.553 (7.59), 10.793 (1.43), 12.298 (1.31), 12.330 (2.20).

Example 27.01
cyclopropyl(4-{[2-({6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 246 μmol) and cyclopropanecarboxylic acid (31.8 mg, 370 μmol), Example 27.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 39.0 mg of the title compound.

LC-MS (Method 4): R_t=1.16 min; MS (ESIpos): m/z=523 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.678 (3.61), 0.686 (8.07), 0.691 (5.25), 0.698 (4.46), 0.705 (9.77), 0.709 (8.92), 0.714 (9.25), 0.721 (8.26), 0.726 (9.31), 0.733 (4.39), 1.950 (1.84), 1.957 (2.03), 1.969 (3.28), 1.981 (1.97), 1.988 (1.70), 2.322 (3.15), 2.327 (4.39), 2.331 (3.54), 2.336 (2.30), 2.364 (4.13), 2.447 (4.85), 2.523 (15.21), 2.539 (3.34), 2.659 (1.44), 2.665 (3.02), 2.669 (4.20), 2.673 (3.15), 3.307 (1.70), 3.501 (4.13), 3.532 (16.00), 3.709 (3.93), 6.976 (3.67), 6.989 (2.49), 7.186 (4.20), 7.216 (1.77), 7.467 (2.69), 7.488 (3.15), 7.552 (1.31), 7.646 (1.31), 7.666 (1.31), 8.013 (3.80), 8.035 (3.48), 8.280 (8.13), 8.292 (9.70), 8.413 (1.18), 8.515 (3.67), 8.961 (2.89), 8.975 (3.67), 10.809 (1.44), 10.896 (3.15), 12.394 (1.51), 12.491 (3.54).

Example 27.02
cyclobutyl(4-{[2-({6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 246 μmol) and cyclobutanecarboxylic acid (37.0 mg, 370 μmol), Example 27.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 45.0 mg of the title compound.

LC-MS (Method 4): R_t=1.22 min; MS (ESIpos): m/z=537 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.065 (0.90), 1.299 (2.85), 1.710 (1.45), 1.734 (1.80), 1.758 (0.85), 1.841 (1.40), 1.862 (2.75), 1.885 (2.30), 1.912 (1.35), 2.053 (3.30), 2.062 (2.50), 2.074 (3.85), 2.083 (2.95), 2.100 (2.40), 2.124 (4.20), 2.145 (4.55), 2.175 (2.30), 2.197 (0.70), 2.318 (1.45), 2.322 (2.85), 2.327 (4.25), 2.331 (4.35), 2.354 (9.25), 2.518 (16.00), 2.523 (10.35), 2.659 (1.10), 2.665 (2.35), 2.669 (3.20), 2.673 (2.35), 2.678 (1.10), 3.306 (3.20), 3.473 (5.00), 3.487 (4.95), 3.507 (12.80), 4.089 (0.80), 6.955 (2.60), 6.967 (2.65), 7.184 (2.00), 7.486 (1.00), 8.011 (3.50), 8.015 (3.50), 8.032 (3.15), 8.036 (3.25), 8.270 (6.00), 8.283 (6.45), 8.510 (1.25), 8.965 (2.85), 8.979 (2.85), 10.883 (0.75).

Example 27.03
2-cyclopropyl-1-(4-{[2-({6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)ethanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 246 μmol) and cyclopropylacetic acid (37.0 mg, 370 μmol), Example 27.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 38.0 mg of the title compound.

LC-MS (Method 4): R_t=1.19 min; MS (ESIpos): m/z=537 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: −0.001 (2.39), 0.011 (8.24), 0.023 (8.54), 0.037 (2.54), 0.330 (2.54), 0.340 (6.78), 0.344 (6.93), 0.350 (4.10), 0.354 (4.15), 0.360 (7.32), 0.364 (6.93), 0.375 (2.24), 0.754 (1.02), 0.854 (2.49), 0.921 (0.98), 0.980 (0.93), 2.153 (11.41), 2.171 (11.17), 2.242 (3.51), 2.278 (6.83), 2.311 (7.22), 2.437 (16.00), 2.584 (3.22), 3.371 (6.63), 3.406 (6.68), 3.433 (15.46), 4.004 (0.93), 6.882 (3.71), 7.093 (4.20), 7.123 (1.80), 7.380 (2.49), 7.401 (2.93), 7.467 (1.32), 7.560 (1.32), 7.928 (3.85), 7.948 (3.51), 8.190 (7.80), 8.204 (8.78), 8.326 (1.12), 8.428 (3.66), 8.876 (2.78), 8.890 (3.71), 10.721 (1.27), 10.807 (2.83), 12.307 (1.46), 12.404 (3.32).

Example 27.04
3,3,3-trifluoro-1-(4-{[2-({6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[2-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, approx. 246 μmol) and 3,3,3-trifluoropropanoic acid (47.3 mg, 370 μmol), Example 27.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 28.0 mg of the title compound.

LC-MS (Method 1): R_t=0.91 min; MS (ESIneg): m/z=563 [M−H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.284 (16.00), 2.628 (1.29), 3.190 (1.01), 3.215 (0.98), 3.525 (1.65).

Example 28.01
tert-butyl 4-[(2-{[6-(2-ethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-chloro-2-ethylpyrimidine (240 mg, 1.68 mmol), Example 28.01 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 10.0 mg (2%) of the title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (6.94), 1.356 (1.64), 1.396 (16.00), 2.327 (0.77), 2.347 (0.97), 2.360 (1.46), 2.373 (1.01), 2.518 (3.41), 2.523 (2.10), 2.669 (0.75), 2.928 (1.03), 2.947 (1.01), 3.352 (1.34), 3.505 (1.83), 8.668 (1.13), 8.682 (1.08).

Example 29.01.01
(rac)-3,3,3-trifluoro-1-(4-{1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

Starting with N-{4-[(1R)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine (185 mg, 395 μmol) and 3,3,3-trifluoropropanoic acid (75.8 mg, 592 μmol), Example 29.01.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 76.2 mg (32%) of the title compound.

LC-MS (Method 4): R_t=1.26 min; MS (ESIpos): m/z=579 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.065 (1.67), 1.295 (16.00), 1.311 (15.14), 2.318 (2.27), 2.322 (2.76), 2.327 (3.91), 2.332 (4.05), 2.337 (3.36), 2.345 (3.53), 2.367 (2.82), 2.418 (3.85), 2.431 (4.45), 2.445 (3.42), 2.460 (2.61), 2.518 (5.14), 2.523 (3.59), 2.539 (1.52), 2.665 (1.24), 2.669 (1.72), 2.673 (1.24), 2.685 (0.72), 2.729 (0.60), 2.888 (0.78), 3.426 (4.22), 3.438 (7.24), 3.450 (4.60), 3.480 (8.82), 3.495 (6.18), 3.582 (2.73), 3.609 (7.70), 3.637 (7.30), 3.664 (2.27), 4.019 (1.55), 6.982 (2.84), 6.996 (1.87), 7.184 (7.61), 7.459 (1.78), 7.480 (1.92), 7.630 (1.06), 7.652 (1.12), 8.095 (1.12), 8.118 (2.53), 8.140 (1.55), 8.286 (4.80), 8.300 (4.54), 8.391 (1.81), 8.426 (3.04), 8.541 (2.87), 8.573 (1.87), 9.373 (4.83), 10.808 (1.12), 10.884 (1.78), 12.377 (1.61), 12.419 (2.61).

Example 29.01.02
(rac)-cyclopropyl(4-{1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

Starting with (rac)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-amine (185 mg, 395 μmol) and cyclopropanecarboxylic acid (51.0 mg, 592 μmol), Example 29.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 63.0 mg (28%) of the title compound.

LC-MS (Method 4): R_t=1.23 min; MS (ESIpos): m/z=537 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.665 (6.69), 0.687 (10.35), 1.064 (1.12), 1.298 (16.00), 1.313 (10.32), 1.938 (2.52), 2.326 (3.08), 2.399 (3.94), 2.672 (1.51), 3.462 (6.88), 3.673 (4.59), 6.989 (2.66), 7.191 (5.06), 7.481 (1.59), 7.630 (1.01), 8.117 (2.13), 8.287 (3.30), 8.300 (3.22), 8.387 (1.34), 8.428 (2.21), 8.538 (2.15), 9.374 (3.86), 10.887 (1.12), 12.433 (1.20).

Example 29.02.01.A
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one (single stereoisomer A)

embedded image

Example 29.02.01.B
3,3,3-trifluoro-1-(4-{(1S or 1R)-1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one (single stereoisomer B)

embedded image

73 mg of (rac)-3,3,3-trifluoro-1-(4-{1-[2-({6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one was separated into the single stereoisomers (Example 29.02.01.A and Example 29.02.01.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IA 5μ 250×30 mm;

Eluent A: tert.-butyl methyl ether+0.1 Vol-% diethylamine (99%);

Eluent B: acetonitrile; isocratic: 70% A+30% B;

Flow: 50.0 mL/min;

Solution: 73 mg/2 mL dichloromethane/methanol 1:1

Injection: 2×1.0 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
6.4-7.7
>99.0%
27 mg
+31.0°

29.02.01.A

(from solution in

Stereoisomer A

DMSO, c = 2.0

mg/mL)

Example
8.70-10.50
98.0%
27 mg
−28.2°

29.02.01.B

(from solution in

Stereoisomer B

DMSO, c = 2.0

mg/mL)

Example 29.02.01.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (3.24), 1.154 (0.90), 1.172 (1.62), 1.190 (0.72), 1.231 (1.80), 1.295 (7.91), 1.312 (7.37), 1.988 (2.34), 2.084 (16.00), 2.318 (1.98), 2.323 (3.42), 2.327 (4.67), 2.332 (3.96), 2.337 (2.34), 2.345 (1.62), 2.366 (1.26), 2.419 (1.80), 2.432 (2.16), 2.518 (11.51), 2.523 (7.73), 2.660 (1.26), 2.665 (2.70), 2.669 (3.60), 2.673 (2.52), 2.679 (1.08), 3.426 (2.16), 3.438 (3.60), 3.450 (2.16), 3.482 (4.13), 3.493 (2.70), 3.582 (1.26), 3.609 (3.96), 3.637 (3.60), 3.664 (1.08), 6.986 (1.44), 7.000 (1.08), 7.183 (3.24), 7.459 (1.44), 7.480 (1.44), 7.631 (0.90), 7.652 (0.90), 8.119 (1.44), 8.123 (1.08), 8.145 (0.90), 8.290 (1.80), 8.304 (1.62), 8.388 (1.44), 8.428 (2.16), 8.537 (1.80), 8.573 (1.44), 9.371 (2.52), 9.382 (1.80), 10.804 (1.26), 10.882 (1.98), 12.376 (1.26), 12.420 (1.80).

Example 29.02.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (0.76), 1.295 (1.48), 1.312 (1.44), 2.084 (16.00), 3.609 (0.82), 3.636 (0.76), 7.184 (0.82).

Example 30.01.01
3,3,3-trifluoro-1-{4-[(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 300 μmol) and 3,3,3-trifluoropropanoic acid (57.6 mg, 449 μmol), Example 30.01.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=511 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.711 (1.37), 1.734 (1.67), 1.758 (0.82), 1.841 (1.42), 1.862 (2.66), 1.868 (1.20), 1.885 (2.10), 1.889 (2.06), 1.912 (1.29), 2.053 (3.09), 2.062 (2.36), 2.069 (2.27), 2.075 (3.56), 2.084 (2.87), 2.101 (2.23), 2.106 (2.06), 2.124 (4.03), 2.129 (2.79), 2.145 (4.33), 2.169 (2.02), 2.175 (2.27), 2.197 (0.73), 2.318 (1.20), 2.323 (2.45), 2.327 (3.52), 2.331 (3.52), 2.354 (8.62), 2.518 (16.00), 2.523 (9.69), 2.659 (0.94), 2.665 (2.10), 2.669 (2.92), 2.673 (2.06), 2.678 (0.99), 2.848 (0.86), 3.284 (0.77), 3.306 (3.05), 3.346 (6.82), 3.474 (4.50), 3.503 (12.31), 6.948 (2.49), 7.187 (4.46), 7.421 (1.12), 7.442 (1.24), 7.600 (0.90), 7.884 (1.97), 7.925 (3.13), 7.945 (2.83), 7.998 (1.46), 8.201 (1.46), 8.266 (5.19), 8.280 (5.06), 8.395 (1.89), 9.015 (7.55), 9.018 (7.72), 10.779 (1.54), 12.313 (0.94).

Example 30.01.02
cyclobutyl{4-[(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 300 μmol) and cyclobutanecarboxylic acid (45.0 mg, 449 μmol), Example 30.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 46.0 mg of the title compound.

LC-MS (Method 4): R_t=1.03 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.065 (1.08), 1.231 (0.77), 2.318 (0.95), 2.323 (2.12), 2.327 (2.98), 2.331 (2.26), 2.337 (1.08), 2.371 (3.66), 2.384 (5.51), 2.396 (4.20), 2.413 (3.71), 2.426 (5.24), 2.437 (4.20), 2.518 (16.00), 2.523 (9.72), 2.659 (0.99), 2.665 (2.26), 2.669 (3.16), 2.673 (2.21), 2.678 (1.04), 2.848 (8.41), 3.474 (5.11), 3.485 (4.70), 3.497 (4.84), 3.510 (5.42), 3.529 (15.23), 3.612 (2.40), 3.640 (6.64), 3.667 (6.33), 3.694 (2.08), 4.049 (2.85), 6.663 (2.35), 6.667 (2.62), 6.721 (0.86), 6.726 (1.36), 6.730 (0.68), 6.944 (3.53), 6.956 (3.57), 7.090 (0.81), 7.207 (4.84), 7.924 (4.97), 7.928 (4.97), 7.945 (4.34), 7.949 (4.56), 8.271 (6.37), 8.285 (6.10), 9.015 (9.40), 9.018 (9.36).

Example 30.01.03
2-cyclopropyl-1-{4-[(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 300 μmol) and cyclopropylacetic acid (45.0 mg, 449 μmol), Example 30.01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 37.0 mg of the title compound.

LC-MS (Method 4): R_t=0.99 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (1.65), 0.011 (5.50), 0.014 (5.20), 0.023 (5.65), 0.026 (5.35), 0.037 (1.90), 0.330 (2.00), 0.340 (4.90), 0.344 (5.10), 0.350 (2.85), 0.354 (2.50), 0.360 (5.30), 0.365 (4.95), 0.375 (1.90), 0.834 (1.05), 0.842 (1.05), 0.854 (1.85), 0.867 (1.05), 0.871 (1.10), 0.921 (1.00), 2.154 (8.80), 2.171 (8.55), 2.233 (1.10), 2.238 (2.30), 2.242 (3.30), 2.247 (2.55), 2.251 (1.50), 2.277 (3.95), 2.311 (4.10), 2.433 (16.00), 2.438 (9.95), 2.575 (1.00), 2.580 (2.30), 2.584 (3.30), 2.589 (2.35), 2.594 (1.05), 3.222 (1.10), 3.374 (3.90), 3.429 (9.90), 6.866 (2.15), 7.106 (3.00), 7.337 (1.20), 7.358 (1.30), 7.517 (0.90), 7.799 (2.00), 7.841 (2.55), 7.862 (2.35), 7.912 (1.50), 8.117 (1.50), 8.186 (4.10), 8.199 (3.95), 8.311 (1.85), 8.930 (5.90), 8.933 (6.45), 10.698 (1.40), 12.230 (0.95).

Example 30.01.04
cyclopropyl{4-[(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 300 μmol) and cyclopropanecarboxylic acid (38.7 mg, 449 μmol), Example 30.01.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 38.0 mg of the title compound.

LC-MS (Method 4): R_t=0.96 min; MS (ESIpos): m/z=469 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.666 (1.22), 0.678 (3.61), 0.685 (7.92), 0.690 (5.08), 0.698 (4.32), 0.705 (9.75), 0.709 (8.43), 0.714 (8.99), 0.721 (8.03), 0.726 (9.19), 0.733 (4.27), 0.745 (1.07), 1.065 (1.17), 1.937 (0.91), 1.949 (1.88), 1.956 (1.98), 1.969 (3.35), 1.981 (1.88), 1.988 (1.73), 2.000 (0.76), 2.318 (1.27), 2.323 (2.69), 2.327 (3.81), 2.331 (3.00), 2.337 (1.93), 2.364 (3.81), 2.446 (4.01), 2.518 (16.00), 2.523 (10.41), 2.659 (1.17), 2.665 (2.64), 2.669 (3.71), 2.673 (2.59), 2.678 (1.22), 3.308 (1.22), 3.503 (3.96), 3.528 (15.54), 3.711 (3.50), 6.954 (3.30), 6.967 (3.40), 7.204 (5.13), 7.445 (1.07), 7.887 (1.47), 7.925 (4.22), 7.930 (4.27), 7.946 (3.76), 7.950 (3.86), 7.997 (1.07), 8.205 (1.07), 8.275 (6.55), 8.288 (6.30), 8.396 (1.42), 9.015 (8.79), 9.019 (8.99), 10.780 (1.37).

Example 30.02.01
(rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with (rac)-6-(6-methyl pyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (200 mg, 482 μmol) and 3,3,3-trifluoropropanoic acid (92.7 mg, 724 μmol), Example 30.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 9.00 mg (3%) of the title compound.

LC-MS (Method 2): R_t=1.05 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ[ppm]: 1.228 (16.00), 1.294 (13.99), 1.517 (10.40), 2.361 (13.20), 2.539 (13.55), 2.691 (9.27), 3.006 (6.30), 3.471 (14.86), 3.636 (11.89), 5.758 (6.03), 7.622 (5.60).

Example 30.02.02
(rac)-cyclobutyl{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with (rac)-6-(6-methylpyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (200 mg, 482 μmol) and cyclobutanecarboxylic acid (72.5 mg, 724 μmol), Example 30.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 67.8 mg (28%) of the title compound.

LC-MS (Method 4): R_t=1.07 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.275 (15.87), 1.292 (16.00), 1.717 (2.29), 1.822 (1.76), 1.844 (3.49), 1.866 (2.74), 1.893 (1.73), 2.030 (4.12), 2.052 (4.77), 2.061 (3.77), 2.076 (3.34), 2.099 (5.07), 2.121 (5.27), 2.151 (2.69), 2.281 (3.72), 2.295 (4.12), 2.326 (2.49), 2.401 (2.91), 2.522 (9.24), 2.668 (1.66), 3.274 (3.59), 3.294 (8.11), 3.307 (7.28), 3.317 (7.69), 3.427 (6.28), 3.443 (7.91), 6.950 (3.52), 6.963 (3.62), 7.172 (8.97), 7.441 (1.23), 7.883 (1.91), 7.924 (4.57), 7.927 (4.52), 7.944 (4.04), 8.198 (1.38), 8.269 (7.26), 8.282 (6.96), 8.395 (1.86), 9.014 (10.78), 9.017 (10.55), 10.766 (1.53), 12.322 (1.91).

Example 30.02.03
(rac)-cyclopropyl{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with (rac)-6-(6-methylpyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (200 mg, 482 μmol) and cyclopropanecarboxylic acid (62.3 mg, 724 μmol), Example 30.02.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 58.7 mg (25%) of the title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (3.77), 0.664 (8.60), 0.669 (5.44), 0.677 (4.50), 0.684 (10.94), 0.691 (10.30), 0.698 (8.39), 0.703 (9.48), 0.710 (4.42), 1.295 (15.94), 1.312 (16.00), 1.918 (1.96), 1.924 (2.14), 1.937 (3.66), 1.949 (1.99), 1.956 (1.84), 2.322 (2.69), 2.326 (3.07), 2.402 (2.75), 2.522 (5.73), 2.668 (1.93), 3.454 (6.26), 3.470 (7.55), 3.676 (4.07), 6.979 (3.54), 7.186 (8.31), 7.885 (1.87), 7.924 (4.30), 7.929 (4.33), 7.950 (3.98), 8.278 (7.22), 8.290 (6.96), 8.397 (1.78), 9.014 (10.12), 9.017 (11.06), 10.770 (1.49), 12.338 (1.61).

Example 30.02.04
(rac)-2-cyclopropyl-1-{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone

embedded image

Starting with (rac)-6-(6-methylpyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (300 mg, 724 μmol) and cyclopropylacetic acid (109 mg, 1.09 mmol), Example 30.02.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 63.0 mg (17%) of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (2.56), 0.011 (9.36), 0.014 (8.28), 0.023 (9.52), 0.026 (8.36), 0.037 (2.76), 0.331 (2.88), 0.341 (7.88), 0.345 (7.72), 0.351 (3.84), 0.356 (3.72), 0.361 (8.16), 0.365 (7.68), 0.375 (2.60), 0.814 (0.76), 0.819 (1.00), 0.831 (1.76), 0.838 (1.76), 0.851 (2.80), 0.863 (1.60), 0.868 (1.68), 0.880 (0.80), 0.888 (0.64), 1.164 (0.76), 1.220 (16.00), 1.237 (15.92), 2.145 (14.24), 2.162 (13.68), 2.231 (2.40), 2.252 (3.80), 2.257 (4.28), 2.261 (4.88), 2.266 (4.24), 2.283 (2.52), 2.338 (5.24), 2.352 (4.20), 2.366 (3.08), 2.457 (4.88), 2.594 (0.88), 2.599 (1.88), 2.604 (2.56), 2.608 (1.80), 2.613 (0.80), 3.358 (8.28), 3.375 (8.08), 3.393 (8.64), 6.904 (3.44), 7.111 (8.72), 7.354 (1.44), 7.376 (1.52), 7.515 (1.04), 7.535 (1.08), 7.817 (2.48), 7.858 (4.20), 7.862 (4.36), 7.883 (3.88), 7.931 (1.80), 8.133 (1.72), 8.207 (7.20), 8.220 (6.88), 8.330 (2.36), 8.949 (10.88), 8.951 (11.16), 10.700 (1.96), 12.211 (1.72), 12.255 (2.48).

Example 30.03.01.A
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer A)

embedded image

Example 30.03.01.B
3,3,3-trifluoro-1-{4-[(1S or 1R)-1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer B)

embedded image

55 mg of (rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one was separated into the single stereoisomers (Example 30.03.01.A and Example 30.03.01.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IA 5μ 250×30 mm;

Eluent A: tert.-butyl methyl ether+0.1 Vol-% diethylamine (99%);

Eluent B: acetonitrile; isocratic: 50% A+50% B;

Flow: 60.0 mL/min;

Solution: 55 mg/1.5 mL dichloromethane/methanol 1:1

Injection: 3×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
7.00-8.80
>99.0%
16 mg
+35.2°

30.03.01.A

(from solution in

Stereoisomer A

DMSO, c = 2.0

mg/mL)

Example
9.60-12.00
97.8%
16 mg
−26.4°

30.03.01.B

(from solution in

Stereoisomer B

DMSO, c = 2.2

mg/mL)

Example 30.03.01.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (16.00), 1.293 (4.06), 1.310 (3.94), 2.083 (0.65), 2.327 (1.20), 2.332 (1.11), 3.437 (1.91), 3.449 (1.23), 3.471 (2.00), 3.488 (1.94), 3.608 (2.09), 3.635 (1.97), 4.199 (1.48), 7.176 (1.97), 7.925 (1.08), 7.929 (1.05), 8.277 (1.75), 8.290 (1.66), 9.014 (2.58), 9.017 (2.74).

Example 30.03.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.803 (0.41), 0.850 (1.01), 0.859 (0.71), 0.966 (0.61), 1.107 (10.43), 1.135 (0.71), 1.143 (0.61), 1.152 (0.81), 1.171 (0.71), 1.182 (1.11), 1.230 (4.86), 1.254 (1.22), 1.279 (1.82), 1.293 (15.90), 1.310 (16.00), 1.347 (1.11), 2.083 (4.05), 2.318 (2.33), 2.322 (3.14), 2.327 (4.56), 2.332 (4.35), 2.337 (3.44), 2.344 (3.54), 2.366 (2.84), 2.418 (3.85), 2.430 (4.35), 2.444 (3.34), 2.458 (2.94), 2.523 (5.97), 2.660 (0.71), 2.665 (1.62), 2.669 (2.33), 2.673 (1.62), 2.679 (0.71), 3.380 (1.32), 3.425 (4.35), 3.437 (7.70), 3.449 (4.96), 3.472 (7.80), 3.482 (7.59), 3.488 (7.59), 3.503 (2.63), 3.509 (1.72), 3.580 (2.94), 3.608 (8.41), 3.635 (7.90), 3.663 (2.43), 4.197 (0.91), 6.959 (3.75), 6.972 (3.85), 7.176 (8.20), 7.444 (1.01), 7.582 (0.81), 7.885 (1.62), 7.925 (4.76), 7.929 (4.56), 7.946 (4.15), 7.950 (4.15), 7.993 (1.11), 8.201 (1.11), 8.278 (7.49), 8.291 (7.09), 8.396 (1.52), 9.015 (11.44), 9.018 (11.14), 10.770 (2.33), 12.284 (1.32), 12.323 (1.82).

Example 30.03.02.A
cyclobutyl{4-[(1R or 1S)-1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 30.03.02.B
cyclobutyl{4-[(1S or 1R)-1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

64.1 mg of (rac)-cyclobutyl{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 30.03.02.A and Example 30.03.02.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 30.0 mL/min;

Solution: 64 mg/2.5 mL ethanol

Injection: 5×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
9.05-10.10
>99.0%
26 mg
−43.1°

30.03.02.A

(from solution in

Stereoisomer A

DMSO, c = 2.6

mg/mL)

Example
10.20-12.50
94.3%
27 mg
+36.0°

30.03.02.B

(from solution in

Stereoisomer B

DMSO, c = 2.9

mg/mL)

Example 30.03.02.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.106 (16.00), 1.275 (5.58), 1.292 (5.58), 1.844 (1.20), 2.031 (1.37), 2.052 (1.58), 2.061 (1.20), 2.099 (1.64), 2.121 (1.76), 2.294 (1.37), 3.272 (1.16), 3.294 (2.80), 3.307 (2.44), 3.316 (2.70), 3.427 (2.13), 3.444 (2.65), 4.193 (1.58), 7.172 (3.11), 7.923 (1.46), 7.928 (1.40), 7.945 (1.32), 7.949 (1.27), 8.268 (2.47), 8.282 (2.34), 9.014 (3.78), 9.017 (3.69).

Example 30.03.02.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.967 (0.76), 1.107 (16.00), 1.144 (0.52), 1.230 (1.08), 1.258 (0.84), 1.276 (10.31), 1.293 (10.47), 1.693 (1.16), 1.707 (1.00), 1.717 (1.40), 1.728 (0.84), 1.741 (0.68), 1.823 (1.12), 1.845 (2.21), 1.850 (1.04), 1.867 (1.72), 1.872 (1.68), 1.889 (0.84), 1.894 (1.08), 2.031 (2.57), 2.040 (1.88), 2.047 (1.88), 2.053 (2.97), 2.062 (2.29), 2.076 (2.01), 2.083 (1.64), 2.100 (3.09), 2.121 (3.29), 2.150 (1.72), 2.282 (2.33), 2.296 (2.57), 2.310 (2.37), 2.323 (1.64), 2.327 (1.48), 2.331 (1.00), 2.361 (1.56), 2.376 (1.52), 2.399 (1.88), 2.413 (1.52), 2.523 (2.93), 2.665 (0.80), 2.669 (1.08), 2.673 (0.72), 3.273 (2.29), 3.294 (5.37), 3.307 (4.81), 3.318 (5.29), 3.410 (1.20), 3.428 (3.93), 3.445 (4.93), 4.194 (1.48), 6.952 (2.17), 6.964 (2.17), 7.172 (5.73), 7.420 (0.84), 7.441 (0.88), 7.883 (1.48), 7.924 (2.73), 7.945 (2.41), 7.994 (1.00), 8.201 (1.04), 8.269 (4.53), 8.282 (4.33), 8.395 (1.40), 9.014 (7.14), 9.017 (6.78), 10.759 (1.44), 12.278 (1.08), 12.321 (1.48).

Example 30.03.03.A
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 30.03.03.B
cyclopropyl{4-[(1S or 1R)-1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

55.4 mg of (rac)-cyclopropyl{4-[1-(2-{[6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 30.03.03.A and Example 30.03.03.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 30.0 mL/min;

Solution: 55 mg/2.0 mL ethanol

Injection: 4×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
12.00-13.55
95.2%
23 mg
−39.5°

30.03.03.A

(from solution in

Stereoisomer A

DMSO, c = 2.7

mg/mL)

Example
13.55-16.00
93.3%
22 mg
+35.4°

30.03.03.B

(from solution in

Stereoisomer B

DMSO, c = 3.2

mg/mL)

Example 30.03.03.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.657 (1.82), 0.665 (4.32), 0.670 (2.73), 0.677 (2.20), 0.684 (5.57), 0.691 (5.31), 0.699 (4.32), 0.703 (4.97), 0.710 (2.35), 1.106 (16.00), 1.230 (1.40), 1.295 (8.34), 1.312 (8.23), 1.919 (1.02), 1.938 (1.82), 2.318 (1.29), 2.322 (1.67), 2.326 (1.93), 2.332 (1.52), 2.398 (1.59), 2.522 (4.59), 2.664 (2.27), 2.668 (1.71), 2.673 (1.02), 3.455 (3.22), 3.471 (3.91), 3.677 (2.12), 4.195 (1.59), 6.971 (1.74), 7.183 (4.17), 7.884 (1.44), 7.925 (2.12), 7.946 (1.93), 8.278 (3.60), 8.291 (3.22), 8.397 (1.33), 9.015 (5.16), 9.017 (5.35), 10.773 (1.29), 12.326 (1.36).

Example 30.03.03.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.645 (0.98), 0.657 (2.94), 0.665 (7.35), 0.670 (4.57), 0.677 (3.59), 0.684 (9.63), 0.691 (9.14), 0.699 (7.18), 0.703 (8.33), 0.710 (3.76), 0.723 (0.98), 0.859 (0.49), 0.965 (0.65), 1.052 (0.49), 1.106 (16.00), 1.143 (0.65), 1.153 (0.49), 1.171 (0.82), 1.189 (0.49), 1.230 (2.94), 1.296 (13.88), 1.312 (14.04), 1.907 (0.82), 1.919 (1.80), 1.926 (1.80), 1.938 (3.10), 1.944 (1.47), 1.950 (1.80), 1.957 (1.63), 1.969 (0.82), 1.986 (1.47), 2.318 (2.12), 2.322 (2.78), 2.327 (3.27), 2.332 (2.61), 2.336 (1.47), 2.397 (2.45), 2.456 (2.45), 2.523 (5.88), 2.660 (0.82), 2.664 (1.96), 2.669 (2.45), 2.673 (1.63), 2.678 (0.82), 3.439 (1.80), 3.455 (5.06), 3.471 (6.20), 3.676 (3.43), 4.200 (1.47), 6.973 (2.78), 7.181 (6.86), 7.421 (1.31), 7.443 (1.47), 7.582 (0.98), 7.604 (0.98), 7.884 (2.29), 7.925 (3.43), 7.947 (2.94), 7.996 (1.63), 8.201 (1.63), 8.278 (5.71), 8.291 (5.39), 8.397 (2.12), 9.014 (8.65), 9.017 (8.65), 10.747 (1.47), 10.771 (1.96), 12.285 (1.47), 12.328 (2.12).

Example 31.01
1-{4-[(2-{[6-(2,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(2,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 176 μmol) and 3,3,3-trifluoropropanoic acid (24 μl, 98% purity, 260 μmol), Example 31.01 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.35-2.44 (m, 4H), 2.46 (s, 3H), 2.62 (s, 3H), 3.45-3.55 (m, 6H), 3.65 (q, 2H), 7.19 (s, 1H), 7.33-7.82 (m, 2H), 7.91 (dd, 1H), 8.27 (d, 2H), 10.78 (br s, 1H), 12.17-12.42 (m, 1H).

Example 31.02
cyclopropyl{4-[(2-{[6-(2,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 176 μmol) and cyclopropanecarboxylic acid (22 μl, 95% purity, 260 μmol), Example 31.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 75 mg of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIneg): m/z=481 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-de): δ [ppm]=0.63-0.73 (m, 4H), 1.93 (tt, 1H), 2.44 (s, 7H), 2.59 (s, 3H), 3.50 (s, 4H), 3.68 (br s, 2H), 6.93 (d, 1H), 7.17 (s, 1H), 7.31-7.80 (m, 2H), 7.89 (dd, 1H), 8.25 (d, 2H), 10.63-10.88 (m, 1H), 12.15-12.41 (m, 1H).

Example 32.01
cyclopropyl{4-[(2-{[6-(5,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(5,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (90.0 mg, approx. 200 μmol) and cyclopropanecarboxylic acid (25 μl, 95% purity, 300 μmol), Example 32.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=0.97 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.66-0.75 (m, 4H), 1.97 (tt, 1H), 2.31-2.39 (m, 5H), 2.41-2.47 (m, 2H), 2.52-2.54 (m, 3H), 3.44-3.58 (m, 4H), 3.61-3.76 (m, 2H), 6.95 (dd, 1H), 7.14-7.90 (m, 4H), 8.28 (d, 1H), 8.86 (s, 1H), 10.61-10.79 (m, 1H), 12.15-12.33 (m, 1H).

Example 32.02
1-{4-[(2-{[6-(5,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(5,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (90.0 mg, approx. 200 μmol) and 3,3,3-trifluoropropanoic acid (27 μl, 98% purity, 300 μmol), Example 32.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.31-2.45 (m, 7H), 2.52 (s, 3H), 3.42-3.58 (m, 6H), 3.65 (q, 2H), 6.94 (dd, 1H), 7.13-7.84 (m, 4H), 8.28 (d, 1H), 8.87 (s, 1H), 10.70 (br dd, 1H), 12.23 (br s, 1H).

Example 32.03
1-{4-[(2-{[6-(5,6-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(5,6-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (90.0 mg, approx. 200 μmol) and acetic acid (17 μl, 300 μmol), Example 32.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=0.89 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=1.99 (s, 3H), 2.31-2.43 (m, 7H), 2.52-2.54 (m, 3H), 3.42-3.53 (m, 6H), 6.94 (dd, 1H), 7.12-7.86 (m, 4H), 8.27 (d, 1H), 8.87 (s, 1H), 10.71 (br s, 1H), 12.23 (s, 1H).

Example 33.01
tert-butyl 4-[(2-{[6-(2,5-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.395 (16.00), 2.347 (1.07), 2.360 (1.81), 2.372 (1.49), 2.615 (4.61), 3.331 (9.11), 3.351 (1.10), 5.759 (12.83), 8.259 (0.79), 8.271 (0.75), 8.550 (1.42).

Example 33.02
1-{4-[(2-{[6-(2,5-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(2,5-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 177 μmol) and 3,3,3-trifluoropropanoic acid (24 μl, 98% purity, 270 μmol), Example 33.02 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 60 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.394 (16.00), 2.380 (1.31), 2.615 (2.35), 3.528 (0.85), 5.759 (1.28), 8.550 (0.75).

Example 33.03
cyclopropyl{4-[(2-{[6-(2,5-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2,5-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 177 μmol) and cyclopropanecarboxylic acid (22 μl, 95% purity, 270 μmol), Example 33.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 45 mg of the title compound.

LC-MS (Method 2): R_t=0.97 min; MS (ESIneg): m/z=481 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.664 (0.42), 0.676 (1.29), 0.683 (2.96), 0.689 (1.87), 0.696 (1.42), 0.703 (3.63), 0.708 (2.98), 0.713 (3.17), 0.720 (3.05), 0.726 (3.64), 0.733 (1.66), 0.745 (0.41), 1.945 (0.74), 1.952 (0.77), 1.956 (0.57), 1.964 (1.34), 1.971 (0.60), 1.976 (0.75), 1.983 (0.68), 2.327 (0.47), 2.386 (3.33), 2.446 (1.39), 2.518 (0.90), 2.523 (0.66), 2.615 (16.00), 3.499 (1.36), 3.523 (6.71), 3.705 (1.28), 6.941 (1.72), 6.944 (1.74), 6.955 (1.75), 6.958 (1.76), 7.197 (2.25), 7.428 (0.63), 7.446 (0.61), 7.894 (0.55), 8.268 (2.73), 8.281 (2.58), 8.549 (4.87), 12.266 (0.76).

Example 33.04
cyclobutyl{4-[(2-{[6-(2,5-dimethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2,5-dimethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 177 μmol) and cyclobutanecarboxylic acid (27 μl, 95% purity, 270 μmol), Example 33.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 41 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.702 (0.54), 1.705 (0.62), 1.715 (0.51), 1.718 (0.53), 1.729 (0.77), 1.731 (0.72), 1.833 (0.65), 1.855 (1.26), 1.860 (0.56), 1.877 (0.96), 1.881 (0.95), 1.899 (0.47), 1.905 (0.59), 2.036 (0.77), 2.045 (1.39), 2.049 (1.01), 2.054 (1.02), 2.058 (0.88), 2.061 (0.98), 2.067 (1.60), 2.076 (1.24), 2.082 (0.58), 2.088 (0.70), 2.092 (0.76), 2.097 (1.07), 2.102 (0.59), 2.119 (1.81), 2.124 (1.21), 2.140 (1.96), 2.145 (1.51), 2.148 (1.36), 2.164 (0.92), 2.169 (1.04), 2.334 (3.00), 2.346 (4.68), 2.358 (4.00), 2.380 (3.20), 2.613 (16.00), 3.291 (1.04), 3.294 (1.13), 3.315 (2.74), 3.457 (1.44), 3.471 (2.01), 3.491 (6.45), 6.921 (1.76), 6.924 (1.75), 6.934 (1.79), 6.937 (1.75), 7.183 (2.27), 7.432 (0.61), 8.258 (2.84), 8.271 (2.71), 8.545 (4.84), 10.734 (0.58), 12.266 (0.67).

Example 34.01.01
tert-butyl 4-[(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol) and 4-chloro-6-methoxypyrimidine (189 mg, 1.31 mmol), Example 34.01.01 was prepared analogously to the procedure for the preparation of Example 01.01.

Yield: 20.0 mg (4%) of the title compound.

LC-MS (Method 4): R_t=1.27 min; MS (ESIpos): m/z=517 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.452 (16.00), 4.046 (2.13), 4.059 (3.07), 7.165 (0.74), 7.167 (0.75), 8.850 (0.89), 8.853 (0.81).

Example 34.02.01
(rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with (rac)-6-(6-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (265 mg, 616 μmol) and 3,3,3-trifluoropropanoic acid (118 mg, 923 μmol), Example 34.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 46.5 mg (13%) of the title compound.

LC-MS (Method 4): R_t=1.12 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.291 (4.49), 1.308 (4.44), 2.326 (1.50), 2.428 (2.35), 2.522 (3.91), 3.436 (2.38), 3.469 (2.52), 3.485 (2.60), 3.608 (2.32), 3.635 (2.21), 3.969 (16.00), 7.174 (1.86), 8.274 (1.92), 8.288 (1.90), 8.803 (4.06), 8.806 (4.26).

Example 34.02.02
(rac)-cyclopropyl{4-[1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with (rac)-6-(6-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (265 mg, 616 μmol) and cyclopropanecarboxylic acid (79.5 mg, 923 μmol), Example 34.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 49.7 mg (16%) of the title compound.

LC-MS (Method 4): R_t=1.08 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (1.28), 0.662 (2.84), 0.667 (1.82), 0.675 (1.49), 0.682 (3.47), 0.686 (3.09), 0.691 (3.24), 0.698 (2.91), 0.703 (3.24), 0.710 (1.53), 1.293 (5.37), 1.310 (5.33), 1.934 (1.19), 3.451 (2.02), 3.468 (2.58), 3.674 (1.41), 3.970 (16.00), 6.963 (1.27), 6.975 (1.31), 7.182 (2.78), 8.275 (2.36), 8.289 (2.26), 8.803 (3.94), 8.806 (4.22).

Example 34.03.01.A
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer A)

embedded image

Example 34.03.01.B
3,3,3-trifluoro-1-{4-[(1S or 1R)-1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer B)

embedded image

60 mg of (rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one was separated into the single stereoisomers (Example 34.03.01.A and Example 34.03.01.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 80% A+20%;

Flow: 30.0 mL/min;

Solution: 60 mg/3 mL ethanol

Injection: 6×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
10.50-12.10
>99.0%
21 mg
−32.0°

34.03.01.A

(from solution in

Stereoisomer A

DMSO, c = 2.6

mg/mL)

Example
12.20-14.50
98.3%
16 mg
+32.9°

34.03.01.B

(from solution in

Stereoisomer B

DMSO, c = 2.7

mg/mL)

Example 34.03.01.A

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.107 (6.75), 1.292 (4.60), 1.309 (4.65), 2.327 (1.36), 2.429 (1.26), 2.523 (1.69), 3.436 (2.22), 3.469 (2.24), 3.486 (2.31), 3.581 (0.86), 3.608 (2.42), 3.636 (2.28), 3.970 (16.00), 6.970 (1.02), 7.173 (1.94), 8.275 (2.02), 8.288 (1.93), 8.804 (4.35), 8.806 (4.43).

Example 34.03.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.966 (0.46), 1.107 (6.66), 1.230 (1.08), 1.291 (6.24), 1.308 (6.30), 2.328 (1.87), 2.342 (1.91), 2.364 (1.57), 2.418 (2.09), 2.427 (2.34), 2.456 (1.79), 3.436 (3.72), 3.468 (3.89), 3.484 (4.40), 3.581 (1.18), 3.608 (3.20), 3.635 (3.10), 3.663 (1.06), 3.969 (16.00), 4.195 (0.70), 6.956 (1.72), 6.968 (1.77), 7.174 (3.09), 7.346 (0.99), 7.421 (0.76), 7.458 (0.74), 7.912 (1.21), 8.192 (0.64), 8.275 (2.68), 8.288 (2.61), 8.358 (0.92), 8.804 (4.71), 8.806 (4.80), 10.759 (0.94), 12.271 (0.83), 12.300 (1.12).

Example 34.03.02.A
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 34.03.02.B
cyclopropyl{4-[(1S or 1R)-1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

44.7 mg of (rac)-cyclopropyl{4-[1-(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 34.03.02.A and Example 34.03.02.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IA 5μ 250×30 mm;

Eluent A: tert.-butyl methyl ether+0.1 Vol-% diethylamine (99%); Eluent B: methanol; isocratic: 50% A+50% B;

Flow: 50.0 mL/min;

Solution: 44 mg/2 mL dichloromethane/methanol 1:1

Injection: 4×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
7.50-8.50
99.1%
15 mg
+42.2°

34.03.02.A

(from solution in

Stereoisomer A

DMSO. c = 2.6

mg/mL)

Example
9.00-12.50
98.7%
7 mg
−43.7°

34.03.02.B

(from solution in

Stereoisomer B

DMSO, c = 2.8

mg/mL)

Example 34.03.02.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.658 (1.04), 0.665 (2.54), 0.670 (1.53), 0.678 (1.21), 0.685 (3.23), 0.692 (3.06), 0.699 (2.48), 0.704 (2.77), 0.711 (1.24), 1.108 (3.85), 1.231 (1.17), 1.296 (4.89), 1.313 (4.86), 1.938 (1.08), 2.323 (1.17), 2.327 (1.43), 2.331 (1.08), 2.523 (2.15), 2.669 (1.04), 3.455 (1.73), 3.471 (2.15), 3.678 (1.14), 3.970 (16.00), 7.181 (2.15), 7.344 (0.95), 8.276 (1.76), 8.289 (1.69), 8.803 (4.07), 8.806 (4.07).

Example 34.03.02.B

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.666 (3.17), 0.685 (4.42), 0.692 (4.20), 0.704 (3.66), 0.711 (1.74), 0.851 (0.49), 1.108 (3.44), 1.153 (0.54), 1.232 (2.55), 1.296 (6.12), 1.314 (5.99), 1.919 (0.80), 1.926 (0.85), 1.938 (1.30), 1.950 (0.80), 2.323 (2.23), 2.327 (2.68), 2.331 (2.10), 2.397 (1.34), 2.523 (8.13), 2.665 (1.65), 2.669 (2.15), 2.673 (1.65), 3.455 (2.46), 3.473 (2.99), 3.676 (1.74), 3.971 (16.00), 6.971 (1.52), 7.182 (2.68), 7.344 (1.52), 7.399 (0.80), 7.421 (0.89), 7.458 (1.07), 7.562 (0.54), 7.583 (0.58), 7.893 (0.63), 7.913 (1.30), 7.934 (0.76), 8.187 (0.98), 8.276 (2.06), 8.289 (2.01), 8.357 (1.30), 8.804 (4.87), 10.715 (0.80), 10.755 (1.16), 12.266 (0.89), 12.301 (1.30).

Example 35.01.01
3,3,3-trifluoro-1-{4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (85.0 mg, 204 μmol) and 3,3,3-trifluoropropanoic acid (27 μl, 310 μmol), Example 35.01.01 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 40.0 mg (34%) of the title compound.

LC-MS (Method 2): R_t=0.99 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.394 (16.00), 2.374 (1.24), 2.387 (1.87), 2.399 (1.43), 2.415 (1.38), 2.428 (1.82), 2.439 (1.33), 3.462 (1.34), 3.475 (1.85), 3.487 (1.51), 3.499 (1.48), 3.513 (1.97), 3.528 (5.59), 3.607 (0.88), 3.634 (2.53), 3.661 (2.38), 4.023 (8.76), 5.755 (0.72), 6.939 (1.32), 6.952 (1.32), 7.196 (1.78), 8.271 (2.12), 8.284 (2.03), 8.631 (4.78), 8.828 (4.15).

Example 35.01.02
cyclopropyl{4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (85.0 mg, 204 μmol) and cyclopropanecarboxylic acid (24 μl, 310 μmol), Example 35.01.02 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 16.0 mg (16%) of the title compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.685 (2.55), 0.704 (3.12), 0.708 (2.97), 0.713 (3.01), 0.721 (2.74), 0.726 (2.99), 1.394 (16.00), 1.967 (1.06), 2.374 (1.42), 3.527 (4.21), 3.708 (1.34), 4.022 (10.40), 6.948 (1.47), 6.961 (1.50), 7.196 (1.94), 8.274 (2.09), 8.286 (2.02), 8.633 (4.64), 8.829 (4.41).

Example 35.01.03
4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]-N,N-dimethylpiperazine-1-carboxamide

embedded image

To a stirred solution of crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 216 μmol) in dichloromethane (3.0 mL, 47 mmol) was added DIPEA (1.0 mL, 5.7 mmol) and dimethylcarbamic chloride (CAS-RN: 79-44-7) (20 μl, 220 μmol). The mixture was stirred at r.t. for 14 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 57.0 mg of the title compound.

LC-MS (Method 2): R_t=0.96 min; MS (ESIpos): m/z=488 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (3.40), 2.405 (1.67), 2.416 (1.23), 2.727 (16.00), 3.127 (1.23), 3.140 (1.63), 3.150 (1.19), 3.504 (2.47), 4.024 (2.57), 8.265 (0.85), 8.631 (1.58), 8.827 (1.19).

Example 35.01.04
N,N-diethyl-4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxamide

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 216 μmol) and diethylcarbamic chloride (CAS-RN: 88-10-8) (27 μl, 220 μmol), Example 35.01.04 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 63.0 mg (53%) of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.014 (3.43), 1.032 (7.93), 1.049 (3.50), 1.107 (16.00), 2.405 (1.69), 3.100 (3.53), 3.118 (4.60), 3.502 (2.01), 4.022 (4.79), 4.194 (1.33), 8.265 (1.14), 8.278 (1.08), 8.632 (2.72), 8.827 (2.45).

Example 35.01.05
{4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(pyrrolidin-1-yl)methanone

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 216 μmol) and pyrrolidine-1-carbonyl chloride (CAS-RN: 1192-63-8) (24 μl, 220 μmol), Example 35.01.05 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 35.0 mg of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=514 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (16.00), 1.715 (4.50), 1.731 (12.03), 1.748 (4.54), 2.322 (1.41), 2.327 (1.98), 2.332 (1.48), 2.401 (8.44), 2.411 (6.18), 2.518 (7.43), 2.523 (4.94), 2.664 (1.38), 2.669 (1.98), 2.673 (1.41), 3.193 (8.00), 3.232 (5.24), 3.249 (13.04), 3.265 (4.71), 3.502 (11.66), 4.022 (15.70), 4.194 (1.55), 6.932 (2.92), 6.946 (2.96), 7.180 (2.72), 8.265 (4.61), 8.278 (4.40), 8.375 (1.38), 8.632 (9.24), 8.827 (7.60).

Example 35.01.06
{4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(piperidin-1-yl)methanone

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 216 μmol) and piperidine-1-carbonyl chloride (CAS-RN: 13939-69-0) (27 μl, 220 μmol), Example 35.01.06 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 75.0 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=528 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.107 (16.00), 1.461 (2.28), 2.396 (2.77), 2.518 (3.17), 2.523 (2.07), 3.100 (3.12), 3.112 (2.31), 3.148 (2.72), 3.501 (3.90), 4.024 (4.49), 4.194 (1.51), 8.264 (1.42), 8.276 (1.34), 8.631 (2.63), 8.827 (2.07).

Example 35.01.07
{4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(morpholin-4-yl)methanone

embedded image

To a stirred solution of crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 288 μmol) in dichloromethane (4.0 mL, 62 mmol) was added pyridine (1.0 mL, 12 mmol) and morpholine-4-carbonyl chloride (CAS-RN: 15159-40-7) (43 μl, 370 μmol). The mixture was stirred at r.t. for 14 h. Further pyridine (1.0 mL, 12 mmol) and morpholine-4-carbonyl chloride (43 μl, 370 μmol) were added and the mixture was stirred at reflux for 14 h. Further morpholine-4-carbonyl chloride (43 μl, 370 μmol) and DIPEA (0.5 mL) were added and the mixture was stirred at reflux for 14 h. Sodium bicarbonate solution was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 15.0 mg of the title compound.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=530 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (3.48), 2.318 (1.81), 2.322 (3.90), 2.327 (5.57), 2.332 (4.03), 2.336 (1.81), 2.397 (6.40), 2.518 (16.00), 2.523 (11.55), 2.660 (1.67), 2.665 (4.03), 2.669 (5.70), 2.673 (3.90), 2.679 (1.67), 3.109 (5.84), 3.120 (8.07), 3.131 (6.26), 3.200 (6.26), 3.313 (4.17), 3.506 (9.46), 3.539 (7.10), 3.552 (8.21), 3.562 (6.12), 4.022 (13.08), 6.928 (2.23), 6.942 (2.37), 7.182 (1.67), 8.264 (3.62), 8.276 (3.34), 8.371 (1.11), 8.631 (8.07), 8.827 (6.54).

Example 35.01.08
N-(4-{[4-(ethylsulfonyl)piperazin-1-yl]methyl}pyridin-2-yl)-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 187 μmol) and ethanesulfonyl chloride (CAS-RN: 594-44-5) (18 μl, 190 μmol), Example 35.01.08 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 44.0 mg of the title compound.

LC-MS (Method 4): R_t=0.96 min; MS (ESIpos): m/z=509 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.200 (6.97), 1.218 (16.00), 1.237 (7.23), 2.327 (0.91), 2.518 (3.79), 2.523 (2.66), 2.539 (0.97), 2.669 (0.90), 3.046 (2.14), 3.065 (6.94), 3.083 (6.76), 3.102 (1.97), 3.203 (4.71), 3.215 (6.51), 3.226 (4.64), 3.545 (9.43), 4.022 (13.11), 6.935 (2.26), 6.947 (2.31), 7.179 (1.80), 8.269 (3.54), 8.282 (3.37), 8.375 (1.04), 8.632 (7.01), 8.828 (5.89), 12.284 (1.19).

Example 35.01.09
6-(5-methoxypyrimidin-4-yl)-N-[4-({4-[(3,3,3-trifluoropropyl)sulfonyl]piperazin-1-yl}methyl)pyridin-2-yl]-1H-benzimidazol-2-amine

embedded image

To a stirred solution of crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 187 μmol) in dichloromethane was added DIPEA and 3,3,3-trifluoropropane-1-sulfonyl chloride (CAS-RN: 845866-80-0) (24 μl, 190 μmol). The mixture was stirred at r.t. for 14 h. Further 3,3,3-trifluoropropane-1-sulfonyl chloride (12 μl, 95 μmol) was added and the mixture was heated to reflux for 6 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 28.0 mg of the title compound.

LC-MS (Method 4): R_t=1.09 min; MS (ESIpos): m/z=577 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.065 (0.70), 2.322 (1.15), 2.327 (1.60), 2.331 (1.23), 2.523 (5.51), 2.651 (0.70), 2.665 (1.70), 2.669 (2.23), 2.673 (2.03), 2.678 (2.50), 2.692 (1.90), 2.698 (2.05), 2.706 (2.68), 2.718 (2.98), 2.725 (2.05), 2.733 (1.70), 2.746 (2.20), 3.260 (6.74), 3.273 (9.26), 3.283 (6.71), 3.347 (5.98), 3.354 (3.81), 3.367 (4.46), 3.554 (12.04), 4.023 (16.00), 6.941 (3.18), 6.954 (3.21), 7.178 (4.21), 7.417 (1.33), 7.572 (0.70), 7.833 (0.68), 7.933 (1.15), 8.118 (0.85), 8.272 (4.71), 8.285 (4.61), 8.375 (1.80), 8.632 (8.96), 8.828 (7.24), 10.765 (1.25), 12.236 (0.98), 12.278 (1.90).

Example 35.01.10
N-[4-({4-[(3-methoxypropyl)sulfonyl]piperazin-1-yl}methyl)pyridin-2-yl]-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 144 μmol) and 3-methoxypropane-1-sulfonyl chloride (CAS-RN: 64297-55-8) (24.9 mg, 144 μmol), Example 35.01.10 was prepared analogously to the procedure for the preparation of Example 35.01.09.

Yield: 18.0 mg of the title compound.

LC-MS (Method 4): R_t=0.99 min; MS (ESIpos): m/z=553 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.874 (1.54), 1.893 (1.63), 1.914 (1.57), 2.322 (1.30), 2.327 (1.84), 2.331 (1.42), 2.518 (6.99), 2.523 (4.69), 2.665 (1.33), 2.669 (1.84), 2.673 (1.39), 3.058 (2.36), 3.072 (1.81), 3.078 (2.36), 3.084 (1.84), 3.098 (2.18), 3.212 (4.33), 3.223 (3.42), 3.240 (16.00), 3.395 (2.21), 3.410 (4.29), 3.426 (2.15), 3.551 (5.90), 4.026 (7.02), 6.936 (1.36), 6.949 (1.36), 7.184 (1.66), 7.415 (0.79), 8.268 (2.09), 8.281 (2.00), 8.375 (1.15), 8.632 (3.48), 8.826 (2.66), 12.283 (0.94).

Example 35.01.11
N-{4-[(4-{[2-(2-methoxyethoxy)ethyl]sulfonyl}piperazin-1-yl)methyl]pyridin-2-yl}-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 187 μmol) and 2-(2-methoxyethoxy)ethanesulfonyl chloride (Uhlenbroek et al. Recueil des Travaux Chimiques des Pays-Bas, 1957, vol. 76, p. 129, 138, 145) (38.0 mg, 187 μmol), Example 35.01.11 was prepared analogously to the procedure for the preparation of Example 35.01.09.

Yield: 41.0 mg of the title compound.

LC-MS (Method 4): R_t=0.97 min; MS (ESIpos): m/z=583 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.539 (1.76), 3.201 (1.81), 3.214 (2.52), 3.224 (1.83), 3.251 (16.00), 3.320 (1.44), 3.350 (1.57), 3.449 (1.31), 3.459 (2.00), 3.464 (1.59), 3.471 (2.34), 3.542 (5.64), 3.549 (2.23), 3.554 (2.20), 3.566 (1.37), 3.718 (1.53), 3.733 (3.05), 3.748 (1.31), 4.023 (4.75), 8.268 (1.33), 8.282 (1.27), 8.632 (2.68), 8.828 (2.01).

Example 35.01.12
N-(4-{[4-(cyclopropylsulfonyl)piperazin-1-yl]methyl}pyridin-2-yl)-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 144 μmol) and cyclopropanesulfonyl chloride (CAS-RN: 139631-62-2) (15 μl, 140 μmol), Example 35.01.12 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 21.0 mg of the title compound.

LC-MS (Method 4): R_t=0.98 min; MS (ESIpos): m/z=521 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.908 (1.30), 0.920 (4.26), 0.927 (5.49), 0.934 (5.36), 0.937 (5.70), 0.947 (3.12), 0.969 (1.41), 0.980 (2.40), 0.990 (4.64), 0.995 (3.81), 1.010 (5.29), 1.015 (3.64), 1.030 (1.17), 1.065 (0.79), 2.318 (0.65), 2.322 (1.41), 2.327 (2.03), 2.331 (1.51), 2.337 (0.72), 2.518 (14.11), 2.523 (9.24), 2.539 (3.47), 2.598 (0.96), 2.610 (1.75), 2.617 (1.92), 2.629 (3.12), 2.638 (1.41), 2.642 (1.79), 2.649 (1.65), 2.665 (1.75), 2.669 (2.20), 2.673 (1.61), 2.678 (0.79), 2.772 (1.34), 3.224 (6.70), 3.236 (9.41), 3.248 (6.63), 3.551 (13.29), 4.023 (16.00), 6.939 (3.09), 6.951 (3.16), 7.188 (2.64), 7.395 (1.13), 7.417 (1.24), 7.935 (1.17), 7.954 (1.06), 8.115 (0.93), 8.270 (4.77), 8.283 (4.53), 8.375 (1.85), 8.632 (9.41), 8.827 (8.38), 10.756 (1.20), 12.235 (0.96), 12.287 (1.85).

Example 35.01.13
N-(4-{[4-(cyclohexylsulfonyl)piperazin-1-yl]methyl}pyridin-2-yl)-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (145 mg, approx. 209 μmol) and cyclohexanesulfonyl chloride (CAS-RN: 4837-38-1) (30 μl, 210 μmol), Example 35.01.13 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 34.0 mg of the title compound.

LC-MS (Method 4): R_t=1.16 min; MS (ESIpos): m/z=563 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.966 (0.99), 1.065 (0.78), 1.143 (1.53), 1.230 (1.48), 1.260 (2.50), 1.292 (2.85), 1.320 (3.60), 1.348 (3.30), 1.380 (2.63), 1.599 (1.66), 1.632 (1.48), 1.755 (2.93), 1.787 (2.93), 1.973 (3.62), 2.003 (2.85), 2.326 (1.66), 2.522 (7.87), 2.669 (1.66), 2.813 (0.78), 3.127 (2.04), 3.281 (9.66), 3.542 (11.65), 4.022 (16.00), 4.208 (1.77), 4.213 (1.83), 4.491 (1.77), 4.495 (1.77), 6.932 (3.14), 6.944 (3.14), 7.191 (2.98), 7.414 (1.40), 7.480 (1.77), 7.489 (1.72), 7.498 (1.83), 7.506 (1.69), 7.524 (2.20), 7.551 (3.49), 7.569 (2.55), 7.932 (1.21), 8.113 (0.91), 8.263 (4.27), 8.276 (4.05), 8.375 (1.85), 8.632 (7.49), 8.827 (6.82), 10.747 (1.18), 12.280 (1.72).

Example 35.01.14
6-(5-methoxypyrimidin-4-yl)-N-(4-{[4-(tetrahydro-2H-pyran-4-ylsulfonyl)piperazin-1-yl]methyl}pyridin-2-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, approx. 144 μmol) and tetrahydro-2H-pyran-4-sulfonyl chloride (CAS-RN: 338453-21-7) (26.6 mg, 144 μmol), Example 35.01.14 was prepared analogously to the procedure for the preparation of Example 35.01.09.

Yield: 15.0 mg of the title compound.

LC-MS (Method 4): R_t=0.96 min; MS (ESIpos): m/z=565 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.595 (1.59), 1.607 (1.79), 1.627 (1.93), 1.638 (1.79), 1.836 (2.48), 1.862 (1.86), 2.166 (0.97), 2.318 (1.52), 2.323 (3.24), 2.327 (4.48), 2.331 (3.31), 2.336 (1.66), 2.463 (6.00), 2.518 (16.00), 2.523 (10.69), 2.540 (2.62), 2.659 (1.38), 2.665 (3.24), 2.669 (4.48), 2.673 (3.31), 2.678 (1.52), 3.127 (1.38), 3.303 (7.45), 3.362 (2.28), 3.467 (2.00), 3.545 (7.93), 3.909 (2.28), 3.927 (2.00), 4.026 (11.17), 6.934 (1.86), 7.183 (2.21), 7.393 (1.10), 7.414 (1.24), 7.935 (1.03), 8.266 (2.90), 8.279 (2.62), 8.372 (1.72), 8.631 (4.55), 8.826 (3.59), 10.753 (1.03), 12.278 (1.31).

Example 35.01.15
4-[(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]-N,N-dimethylpiperazine-1-sulfonamide

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 187 μmol) and dimethylsulfamyl chloride (CAS-RN: 13360-57-1) (20 μl, 190 μmol), Example 35.01.15 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 50.0 mg of the title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=524 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.772 (16.00), 3.538 (1.67), 4.023 (1.84), 8.632 (1.03).

Example 35.01.16
N-{4-[(4-{[4-(methoxymethyl)piperidin-1-yl]sulfonyl}piperazin-1-yl)methyl]pyridin-2-yl}-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 187 μmol) and 4-(methoxymethyl)piperidine-1-sulfonyl chloride (CAS-RN: 1243250-01-2) (42.6 mg, 187 μmol), Example 35.01.16 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 64.0 mg of the title compound.

LC-MS (Method 4): R_t=1.11 min; MS (ESIpos): m/z=608 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.675 (1.51), 2.465 (2.44), 2.518 (2.07), 2.523 (1.29), 2.799 (1.30), 2.804 (1.33), 3.170 (4.62), 3.178 (3.11), 3.185 (2.94), 3.220 (3.98), 3.224 (16.00), 3.533 (3.65), 3.557 (1.19), 4.023 (4.68), 8.264 (1.43), 8.277 (1.38), 8.632 (2.67), 8.827 (2.07).

Example 35.01.17
N-[4-({4-[(4-methoxypiperidin-1-yl)sulfonyl]piperazin-1-yl}methyl)pyridin-2-yl]-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 187 μmol) and 4-methoxypiperidine-1-sulfonyl chloride (CAS-RN: 355849-73-9) (40.0 mg, 187 μmol), Example 35.01.17 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 63.0 mg of the title compound.

LC-MS (Method 4): R_t=1.06 min; MS (ESIpos): m/z=594 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.465 (1.18), 1.476 (1.01), 1.486 (1.24), 1.833 (1.10), 2.322 (0.83), 2.327 (1.20), 2.331 (0.91), 2.466 (3.97), 2.518 (4.81), 2.523 (3.27), 2.665 (0.87), 2.669 (1.22), 2.673 (0.89), 3.001 (0.89), 3.010 (1.05), 3.031 (1.89), 3.040 (1.20), 3.054 (1.14), 3.062 (1.01), 3.171 (3.97), 3.242 (16.00), 3.359 (1.74), 3.537 (5.46), 4.024 (6.47), 6.928 (1.32), 6.941 (1.32), 7.186 (1.44), 8.264 (2.01), 8.277 (1.93), 8.375 (0.95), 8.632 (3.41), 8.826 (2.60), 12.281 (0.93).

Example 35.01.18
N-[4-({4-[(2,6-dimethylmorpholin-4-yl)sulfonyl]piperazin-1-yl}methyl)pyridin-2-yl]-6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-amine

embedded image

Starting with crude 6-(5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 216 μmol) and 2,6-dimethylmorpholine-4-sulfonyl chloride (CAS-RN: 919026-20-3) (46.2 mg, 216 μmol), Example 35.01.18 was prepared analogously to the procedure for the preparation of Example 35.01.03.

Yield: 75.0 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=594 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.086 (10.24), 1.102 (12.46), 1.107 (16.00), 2.327 (1.39), 2.669 (1.44), 3.212 (3.98), 3.389 (2.63), 3.416 (2.17), 3.547 (4.32), 4.022 (9.69), 4.194 (0.85), 6.952 (1.37), 7.193 (2.13), 8.270 (1.71), 8.283 (1.76), 8.635 (3.43), 8.829 (3.54).

Example 35.02.01
(rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude (rac)-6-(5-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (900 mg, approx. 1.79 mmol) and 3,3,3-trifluoropropanoic acid (320 mg, 2.50 mmol), Example 35.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 990 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.035 (7.87), 1.052 (16.00), 1.070 (8.19), 1.232 (0.63), 1.298 (3.10), 1.314 (3.04), 2.323 (1.33), 2.327 (1.67), 2.332 (1.43), 2.434 (1.06), 2.523 (2.58), 2.665 (0.82), 2.669 (1.12), 2.673 (0.84), 3.405 (1.03), 3.423 (3.02), 3.435 (3.78), 3.440 (4.12), 3.452 (3.50), 3.469 (2.15), 3.485 (2.09), 3.513 (1.24), 3.540 (0.86), 3.582 (0.82), 3.609 (2.55), 3.636 (2.15), 3.664 (0.68), 4.023 (11.63), 4.344 (1.01), 4.356 (1.77), 4.368 (0.97), 6.960 (1.25), 6.973 (1.27), 7.174 (2.05), 8.280 (1.81), 8.294 (1.73), 8.635 (4.69), 8.829 (5.00).

Example 35.02.02
(rac)-2-cyclopropyl-1-{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone

embedded image

Starting with crude (rac)-6-(5-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (233 mg, 541 μmol) and cyclopropylacetic acid (81.3 mg, 812 μmol), Example 35.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 35.2 mg (12%) of the title compound.

LC-MS (Method 4): R_t=1.02 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.000 (1.63), 0.011 (5.34), 0.014 (4.98), 0.023 (5.34), 0.037 (1.71), 0.331 (1.74), 0.341 (4.45), 0.345 (4.57), 0.351 (2.45), 0.356 (2.36), 0.361 (4.77), 0.366 (4.52), 0.376 (1.60), 0.851 (1.68), 1.219 (8.92), 1.236 (9.25), 2.144 (7.89), 2.161 (7.78), 2.262 (2.45), 2.339 (2.74), 2.458 (5.07), 2.604 (0.81), 3.358 (4.84), 3.372 (5.35), 3.390 (5.07), 3.957 (16.00), 6.886 (2.70), 6.900 (2.73), 7.103 (3.23), 7.350 (0.73), 7.864 (0.73), 8.206 (4.20), 8.219 (4.12), 8.310 (0.96), 8.567 (9.18), 8.762 (8.09), 12.232 (1.17).

Example 35.02.03
(rac)-cyclopropyl{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with crude (rac)-6-(5-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (233 mg, 541 μmol) and cyclopropanecarboxylic acid (69.9 mg, 812 μmol), Example 35.02.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 59.6 mg (22%) of the title compound.

LC-MS (Method 4): R_t=0.99 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.664 (6.36), 0.684 (7.92), 0.691 (7.41), 0.699 (6.29), 0.703 (6.76), 0.710 (3.18), 1.295 (11.02), 1.311 (10.82), 1.937 (2.47), 2.327 (2.51), 2.523 (3.46), 2.669 (0.98), 3.451 (4.64), 3.468 (5.79), 3.675 (3.24), 4.022 (16.00), 6.959 (3.20), 6.972 (3.17), 7.176 (3.41), 7.413 (0.97), 7.934 (0.98), 8.275 (4.76), 8.288 (4.52), 8.379 (1.32), 8.632 (9.56), 8.827 (7.81), 12.304 (1.38).

Example 35.02.04
(rac)-cyclobutyl{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with crude (rac)-6-(5-methoxypyrimidin-4-yl)-N-{4-[1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine (233 mg, 541 μmol) and cyclobutanecarboxylic acid (81.3 mg, 812 μmol), Example 35.02.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 78.2 mg (28%) of the title compound.

LC-MS (Method 4): R_t=1.05 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.274 (4.42), 1.290 (4.49), 1.843 (0.97), 2.030 (1.13), 2.051 (1.33), 2.060 (1.05), 2.075 (0.91), 2.099 (1.39), 2.120 (1.44), 2.280 (1.01), 2.294 (1.14), 2.308 (1.10), 2.523 (1.41), 3.272 (0.98), 3.293 (2.29), 3.305 (1.93), 3.315 (1.99), 3.337 (16.00), 3.423 (1.73), 3.440 (2.32), 4.022 (7.27), 6.943 (1.24), 6.956 (1.30), 7.164 (1.34), 8.267 (2.02), 8.280 (1.95), 8.632 (4.38), 8.827 (3.67).

Example 35.03.01.A
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer A)

embedded image

Example 35.03.01.B
3,3,3-trifluoro-1-{4-[(1S or 1R)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one (single stereoisomer B)

embedded image

97 mg of (rac)-3,3,3-trifluoro-1-{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one was separated into the single stereoisomers (Example 35.03.01.A and Example 35.03.01.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.1 Vol-% diethylamine (99%);

Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 60.0 mL/min;

Solution: 97 mg/4.8 mL dichloromethane/methanol 1:1

Injection: 3×1.6 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
7.9-13.5
>99.9%
27 mg
−39.1°

35.03.01.A

(from solution in

Stereoisomer A

DMSO, c = 2.4

mg/mL)

Example
15.2-21.3
>99.9%
32 mg
+33.2°

35.03.01.B

(from solution in

Stereoisomer B

DMSO, c = 3.2

mg/mL)

Example 35.03.01.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (9.20), 1.233 (1.29), 1.294 (7.37), 1.311 (7.43), 2.322 (1.66), 2.326 (2.14), 2.331 (2.16), 2.432 (1.92), 2.523 (3.10), 2.664 (0.98), 2.669 (1.33), 2.674 (0.94), 3.438 (3.71), 3.472 (3.64), 3.487 (3.86), 3.580 (1.50), 3.607 (4.23), 3.635 (4.05), 3.662 (1.26), 4.022 (16.00), 4.188 (0.72), 6.954 (2.25), 6.967 (2.29), 7.171 (3.12), 8.276 (3.75), 8.289 (3.57), 8.632 (9.09), 8.827 (8.39), 12.289 (0.92).

Example 35.03.01.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (8.52), 1.234 (1.38), 1.295 (6.45), 1.311 (6.45), 2.322 (1.92), 2.326 (2.52), 2.331 (2.35), 2.432 (1.81), 2.518 (6.48), 2.522 (4.22), 2.664 (1.26), 2.669 (1.75), 2.674 (1.20), 3.438 (3.38), 3.489 (3.30), 3.580 (1.38), 3.607 (3.93), 3.635 (3.76), 3.662 (1.18), 4.022 (16.00), 6.955 (2.04), 6.969 (2.04), 7.171 (2.87), 8.276 (3.35), 8.290 (3.27), 8.632 (8.66), 8.828 (8.40).

Example 35.03.02.A
2-cyclopropyl-1-{4-[(1R or 1S)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone (single stereoisomer A)

embedded image

Example 35.03.02.B
2-cyclopropyl-1-{4-[(1S or 1R)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone (single stereoisomer B)

embedded image

40 mg of (rac)-2-cyclopropyl-1-{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}ethanone was separated into the single stereoisomers (Example 35.03.02.A and Example 35.03.02.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 30.0 mL/min;

Solution: 40 mg/2 mL ethanol

Injection: 4×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
9.50-11.10
99.6%
15 mg
−36.4°

35.03.02.A

(from solution in

Stereoisomer A

DMSO, c = 2.9

mg/mL)

Example
11.20-12.50
95.1%
15 mg
+32.4°

35.03.02.B

(from solution in

Stereoisomer B

DMSO, c = 2.6

mg/mL)

Example 35.03.02.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (2.36), 0.011 (7.87), 0.014 (7.61), 0.023 (8.26), 0.026 (7.87), 0.037 (2.62), 0.331 (2.75), 0.341 (6.69), 0.345 (7.21), 0.352 (3.80), 0.356 (3.67), 0.362 (7.34), 0.366 (7.08), 0.376 (2.62), 0.851 (2.75), 1.042 (14.95), 1.166 (4.98), 1.220 (14.56), 1.238 (14.69), 2.146 (12.46), 2.162 (12.33), 2.257 (4.98), 2.262 (5.90), 2.267 (4.98), 2.339 (4.20), 2.458 (11.28), 2.599 (2.75), 2.604 (3.80), 2.608 (2.75), 3.358 (7.34), 3.374 (8.39), 3.391 (7.87), 3.960 (16.00), 4.132 (1.57), 6.886 (3.41), 7.097 (3.93), 7.327 (1.84), 7.347 (2.10), 7.866 (1.84), 8.049 (1.57), 8.206 (5.38), 8.219 (5.11), 8.310 (3.02), 8.566 (9.70), 8.760 (7.08), 10.675 (2.36), 12.229 (3.02).

Example 35.03.02.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (1.04), 0.011 (3.49), 0.014 (3.28), 0.023 (3.44), 0.026 (3.39), 0.037 (1.20), 0.331 (1.20), 0.341 (3.00), 0.345 (3.22), 0.352 (1.58), 0.356 (1.53), 0.362 (3.22), 0.366 (3.17), 0.376 (1.20), 0.831 (0.71), 0.834 (0.71), 0.839 (0.71), 0.851 (1.20), 0.868 (0.71), 0.871 (0.66), 0.901 (0.55), 1.042 (16.00), 1.165 (2.02), 1.220 (6.33), 1.237 (6.39), 2.145 (5.62), 2.162 (5.46), 2.253 (1.53), 2.257 (1.91), 2.262 (2.18), 2.267 (1.91), 2.338 (1.69), 2.353 (1.53), 2.367 (1.15), 2.458 (3.33), 2.600 (0.93), 2.604 (1.31), 2.608 (0.98), 3.358 (3.00), 3.373 (3.49), 3.390 (3.28), 3.405 (2.13), 3.959 (6.77), 4.132 (1.47), 6.886 (1.47), 6.899 (1.53), 7.098 (1.64), 7.347 (0.76), 8.206 (2.40), 8.219 (2.29), 8.310 (1.15), 8.566 (4.53), 8.760 (3.22), 10.676 (0.82), 12.230 (1.15).

Example 35.03.03.A
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 35.03.03.B
cyclopropyl{4-[(1S or 1R)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

40 mg of (rac)-cyclopropyl{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 35.03.03.A and Example 35.03.03.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 30.0 mL/min;

Solution: 40 mg/2.0 mL ethanol

Injection: 4×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
11.00-12.25
>99.0%
20 mg
−41.9°

35.03.03.A

(from solution in

Stereoisomer A

DMSO, c = 2.8

mg/mL)

Example
12.25-15.25
97.5%
20 mg
+37.7°

35.03.03.B

(from solution in

Stereoisomer B

DMSO, c = 2.7

mg/mL)

Example 35.03.03.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.658 (2.70), 0.665 (6.49), 0.670 (4.05), 0.678 (3.21), 0.685 (8.29), 0.692 (7.90), 0.699 (6.30), 0.704 (7.33), 0.711 (3.41), 0.967 (0.84), 1.107 (16.00), 1.231 (1.99), 1.296 (12.40), 1.313 (12.40), 1.918 (1.54), 1.925 (1.67), 1.938 (2.76), 1.950 (1.54), 1.957 (1.41), 2.323 (2.44), 2.327 (2.83), 2.331 (2.25), 2.397 (2.18), 2.523 (4.31), 2.665 (1.35), 2.669 (1.86), 2.673 (1.35), 3.453 (4.63), 3.470 (5.85), 3.678 (3.02), 4.023 (14.20), 4.193 (1.54), 6.959 (3.08), 6.973 (3.08), 7.174 (3.15), 7.415 (1.22), 7.932 (1.22), 8.276 (5.01), 8.289 (4.76), 8.377 (1.86), 8.631 (9.77), 8.827 (7.33), 10.740 (1.41), 12.295 (2.06).

Example 35.03.03.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.646 (0.81), 0.658 (2.55), 0.665 (5.98), 0.671 (3.55), 0.678 (2.93), 0.685 (7.66), 0.692 (7.10), 0.700 (5.91), 0.704 (6.72), 0.711 (3.11), 0.724 (0.75), 0.967 (0.44), 1.107 (13.01), 1.153 (0.50), 1.231 (2.43), 1.259 (1.00), 1.296 (11.52), 1.314 (11.33), 1.906 (0.68), 1.919 (1.49), 1.925 (1.49), 1.938 (2.55), 1.944 (1.25), 1.950 (1.43), 1.957 (1.37), 1.969 (0.62), 2.084 (1.12), 2.318 (1.68), 2.323 (2.24), 2.327 (2.55), 2.331 (1.99), 2.337 (1.31), 2.401 (1.99), 2.523 (3.36), 2.665 (1.18), 2.669 (1.56), 2.674 (1.12), 3.437 (1.37), 3.454 (4.11), 3.470 (5.23), 3.504 (1.00), 3.510 (0.87), 3.676 (2.74), 4.022 (16.00), 4.194 (1.25), 6.959 (2.99), 6.973 (3.05), 7.175 (3.18), 7.397 (0.81), 7.415 (0.87), 7.932 (0.93), 8.117 (0.62), 8.276 (4.98), 8.289 (4.73), 8.379 (1.31), 8.631 (10.52), 8.827 (8.53), 10.740 (1.06), 12.252 (0.81), 12.296 (1.56).

Example 35.03.04.A
cyclobutyl{4-[(1R or 1S)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer A)

embedded image

Example 35.03.04.B
cyclobutyl{4-[(1R or 1S)-1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone (single stereoisomer B)

embedded image

73 mg of (rac)-cyclobutyl{4-[1-(2-{[6-(5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone was separated into the single stereoisomers (Example 35.03.04.A and Example 35.03.04.B) via preparative, chiral HPLC.

Instrument: Labomatic HD5000, Labocord-5000; Gilson GX-241, Labcol Vario 4000,

Column: Chiralpak IB 5μ 250×30 mm;

Eluent A: hexane+0.2 Vol-% diethylamine (99%); Eluent B: ethanol; isocratic: 70% A+30% B;

Flow: 30.0 mL/min;

Solution: 73 mg/2 mL ethanol

Injection: 4×0.5 mL

Detection: UV 325 nm

Retention
purity

time in min
in %
yield
Optical rotation [α]_D

Example
7.50-8.80
>99.0%
30 mg
−35.0°

35.03.04.A

(from solution in

Stereoisomer A

DMSO, c = 3.9

mg/mL)

Example
8.90-11.50
95.0%
32 mg
+32.3°

35.03.04.B

(from solution in

Stereoisomer B

DMSO, c = 3.2

mg/mL)

Example 35.03.04.A

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.107 (16.00), 1.277 (6.54), 1.294 (6.69), 1.846 (1.33), 1.873 (1.07), 2.054 (1.92), 2.100 (1.96), 2.122 (2.07), 2.327 (1.88), 2.523 (4.47), 2.669 (1.48), 3.277 (1.48), 3.297 (3.70), 3.427 (2.62), 3.443 (3.40), 4.024 (7.24), 4.192 (1.48), 6.945 (1.59), 7.160 (1.66), 8.268 (2.44), 8.281 (2.33), 8.374 (1.22), 8.630 (4.55), 8.826 (3.55), 12.290 (1.26).

Example 35.03.04.B

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.108 (16.00), 1.277 (2.51), 1.295 (2.57), 2.055 (0.72), 2.101 (0.76), 2.122 (0.78), 2.323 (0.80), 2.327 (0.95), 2.331 (0.66), 2.523 (1.71), 2.669 (0.76), 3.297 (1.36), 3.309 (1.38), 3.427 (0.97), 3.444 (1.27), 4.025 (2.61), 4.192 (1.60), 8.267 (0.86), 8.281 (0.84), 8.630 (1.58), 8.825 (1.21).

Example 36.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (single stereoisomer A)

embedded image

To a stirred solution of 1H-imidazole (33.6 mg, 493 μmol) and di-1H-imidazol-1-ylmethanethione (586 mg, 90% purity, 2.96 mmol) in dichloromethane (10 mL) was added tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (755 mg, 2.47 mmol), dissolved in dichloromethane (20 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-[5-(propan-2-yloxy)pyrimidin-4-yl]benzene-1,2-diamine (745 mg, 97% purity, 2.96 mmol), dissolved in dichloromethane (18 mL) was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (0.55 mL, 3.45 mmol) was added. The mixture was stirred at r.t. for 4 h. Further N,N′-dipropan-2-ylcarbodiimide (0.55 mL, 3.45 mmol) was added and the mixture was stirred at 40° C. for 2 h and at r.t. for 14 h. Water was added, the mixture was stirred for 30 minutes. The mixture was extracted with dichloromethane, dried (sodium sulfate) and the solvent was removed in vacuum.

Aminophase-silicagel chromatography gave 470 mg of the title compound.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=559 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.171 (1.05), 1.279 (1.72), 1.295 (1.76), 1.307 (0.93), 1.323 (0.90), 1.349 (2.19), 1.364 (2.66), 1.369 (4.04), 1.376 (16.00), 1.987 (1.78), 5.758 (2.03), 7.171 (0.86), 8.622 (1.34), 8.801 (1.46).

Example 36.02
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one (single stereoisomer A)

embedded image

Starting with crude N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (160 mg, approx. 200 μmol) and 3,3,3-trifluoropropanoic acid (77.0 mg, 601 μmol), Example 36.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 53.0 mg of the title compound.

Optical rotation [α]_D+30.1° (from solution in DMSO, c=2.12 mg/mL)

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=569 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.154 (1.10), 1.172 (2.36), 1.189 (1.29), 1.293 (5.93), 1.309 (6.05), 1.349 (8.44), 1.363 (8.47), 1.987 (4.40), 2.327 (1.16), 2.331 (1.33), 2.345 (1.33), 2.427 (1.53), 2.518 (2.74), 2.523 (1.84), 3.425 (1.56), 3.438 (2.82), 3.450 (2.04), 3.469 (3.01), 3.486 (3.49), 3.580 (1.08), 3.608 (3.07), 3.635 (2.93), 4.016 (0.97), 4.034 (0.96), 4.830 (1.28), 4.845 (1.74), 4.861 (1.31), 5.759 (16.00), 6.946 (1.69), 6.949 (1.70), 6.959 (1.75), 6.962 (1.75), 7.179 (2.34), 8.282 (1.88), 8.296 (1.84), 8.623 (5.39), 8.802 (6.53).

Example 36.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone (single stereoisomer A)

embedded image

Starting with crude N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (160 mg, approx. 200 μmol) and cyclopropanecarboxylic acid (51.8 mg, 601 μmol), Example 36.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 67.0 mg of the title compound.

Optical rotation [α]_D+45.2° (from solution in DMSO, c=2.66 mg/mL)

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (2.31), 0.663 (5.33), 0.668 (3.36), 0.676 (2.68), 0.683 (6.46), 0.687 (5.50), 0.692 (5.97), 0.699 (5.32), 0.704 (6.15), 0.711 (2.91), 1.154 (2.05), 1.172 (4.27), 1.189 (2.26), 1.295 (10.30), 1.312 (10.64), 1.349 (15.35), 1.363 (15.27), 1.916 (1.28), 1.922 (1.36), 1.935 (2.28), 1.947 (1.30), 1.954 (1.19), 1.987 (7.74), 2.318 (1.26), 2.323 (1.39), 2.327 (1.49), 2.331 (1.22), 2.397 (1.80), 2.456 (1.55), 2.518 (2.36), 2.685 (1.03), 3.436 (1.19), 3.452 (3.77), 3.469 (4.81), 3.485 (2.42), 3.675 (2.47), 4.016 (1.68), 4.034 (1.63), 4.830 (2.22), 4.845 (3.02), 4.861 (2.24), 4.876 (0.85), 5.759 (16.00), 6.953 (3.00), 6.956 (2.93), 6.966 (3.02), 6.970 (2.92), 7.187 (5.09), 8.283 (3.40), 8.296 (3.23), 8.623 (9.76), 8.803 (11.46), 12.247 (1.48).

Example 36.04
cyclobutyl(4-{(1R or 1S)-1-[2-({6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone (single stereoisomer A)

embedded image

Starting with crude N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[5-(propan-2-yloxy)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (160 mg, approx. 200 μmol) and cyclobutanecarboxylic acid (60.2 mg, 601 μmol), Example 36.04 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 53.0 mg of the title compound.

Optical rotation [α]_D+40.6° (from solution in DMSO, c=2.15 mg/mL)

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.153 (1.45), 1.171 (2.93), 1.189 (1.50), 1.275 (7.99), 1.292 (8.05), 1.347 (10.61), 1.362 (10.36), 1.716 (1.07), 1.822 (0.91), 1.843 (1.75), 1.865 (1.30), 1.870 (1.31), 1.986 (5.35), 2.029 (1.97), 2.039 (1.44), 2.046 (1.44), 2.052 (2.26), 2.060 (1.70), 2.076 (1.48), 2.081 (1.27), 2.099 (2.32), 2.120 (2.44), 2.124 (2.31), 2.149 (1.29), 2.282 (1.76), 2.296 (1.95), 2.311 (1.78), 2.322 (1.17), 2.388 (1.32), 2.401 (1.36), 3.271 (1.68), 3.294 (3.97), 3.307 (3.41), 3.314 (3.52), 3.426 (3.12), 3.442 (3.92), 4.016 (1.21), 4.034 (1.20), 4.829 (1.71), 4.844 (2.32), 4.859 (1.71), 5.758 (16.00), 6.938 (2.29), 6.951 (2.30), 6.953 (2.29), 7.172 (3.82), 8.275 (2.42), 8.287 (2.28), 8.622 (7.20), 8.802 (8.36), 12.243 (1.32).

Example 37.01
3,3,3-trifluoro-1-{4-[(2-{[6-(1-methyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 208 μmol) and 3,3,3-trifluoropropanoic acid (28 μl, 98% purity, 310 μmol), Example 37.01 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 46.0 mg of the title compound.

LC-MS (Method 1): R_t=0.66 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.37-2.44 (m, 4H), 3.43-3.56 (m, 6H), 3.66 (q, 2H), 3.87 (s, 3H), 6.92 (d, 1H), 7.13-7.67 (m, 4H), 7.78 (br s, 1H), 8.03 (br s, 1H), 8.26 (d, 1H), 10.59 (br s, 1H), 12.04 (br s, 1H).

Example 37.02
2-cyclopropyl-1-{4-[(2-{[6-(1-methyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 208 μmol) and cyclopropylacetic acid (30 μl, 98% purity, 310 μmol), Example 37.02 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 70.0 mg of the title compound.

LC-MS (Method 1): R_t=0.62 min; MS (ESIneg): m/z=469 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.000 (0.96), 0.011 (3.51), 0.014 (3.21), 0.023 (3.61), 0.026 (3.23), 0.037 (1.08), 0.330 (1.08), 0.340 (3.06), 0.344 (3.06), 0.350 (1.62), 0.355 (1.72), 0.360 (3.23), 0.364 (2.97), 0.375 (1.08), 0.834 (0.69), 0.837 (0.70), 0.842 (0.69), 0.854 (1.08), 2.153 (5.45), 2.169 (5.26), 2.238 (0.98), 2.243 (1.34), 2.248 (1.15), 2.273 (2.66), 2.292 (2.54), 2.305 (2.60), 2.438 (3.88), 2.580 (0.74), 2.585 (1.00), 2.590 (0.74), 3.368 (2.58), 3.415 (8.30), 3.776 (9.26), 5.675 (16.00), 6.821 (1.99), 6.824 (1.98), 6.837 (1.99), 7.102 (2.42), 8.157 (3.11), 8.169 (2.97), 10.485 (1.07), 11.935 (1.46).

Example 37.03
cyclopropyl{4-[(2-{[6-(1-methyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 208 μmol) and cyclopropanecarboxylic acid (25 μl, 98% purity, 310 μmol), Example 37.03 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 65.0 mg of the title compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.65-0.76 (m, 4H), 1.92-2.02 (m, 1H), 2.34-2.45 (m, 4H), 3.51 (s, 4H), 3.70 (br s, 2H), 3.86 (s, 3H), 6.89-6.96 (m, 1H), 7.14-7.65 (m, 4H), 7.71-7.84 (m, 1H), 7.94-8.12 (m, 1H), 8.25 (d, 1H), 10.57 (br s, 1H), 12.02 (br s, 1H).

Example 37.04
cyclobutyl{4-[(2-{[6-(1-methyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 208 μmol) and cyclobutanecarboxylic acid (30 μl, 98% purity, 310 μmol), Example 37.04 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 48.0 mg of the title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=1.67-1.79 (m, 1H), 1.82-1.95 (m, 1H), 2.01-2.22 (m, 4H), 2.35 (br s, 4H), 3.43-3.56 (m, 4H), 3.87 (s, 3H), 6.91 (d, 1H), 6.99-7.03 (m, 1H), 7.09-7.67 (m, 4H), 7.78 (br d, 1H), 7.94-8.12 (m, 1H), 8.19-8.30 (m, 1H), 10.57 (br s, 1H), 12.03 (br s, 1H).

Example 38.01
tert-butyl 4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (39.6 mg, 581 μmol) and di-1H-imidazol-1-ylmethanethione (654 mg, 95% purity, 3.49 mmol) in dichloromethane (60 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (850 mg, 2.91 mmol) dissolved in dichloromethane (30 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-(1-ethyl-1H-pyrazol-4-yl)benzene-1,2-diamine (706 mg, 3.49 mmol), dissolved in dichloromethane (30 mL) was added and the mixture was stirred at r.t. for 56 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (0.64 mL, 4.0 mmol) was added. The mixture was stirred at r.t. for 4 h. Further N,N′-dipropan-2-ylcarbodiimide (0.32 mL, 2.0 mmol) was added and the mixture was stirred at r.t. for 14 h. Further N,N′-dipropan-2-ylcarbodiimide (0.32 mL, 2.0 mmol) was added and the mixture was stirred at r.t. for 14 h. Saturated sodium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave a solid that was triturated with ethanol to give 151 mg of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=503 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.388 (3.11), 1.392 (6.25), 1.394 (16.00), 1.410 (4.28), 1.428 (1.86), 1.987 (0.85), 2.354 (1.26), 3.333 (10.47), 3.347 (1.12), 3.488 (1.61), 5.760 (1.46), 8.235 (0.79), 8.249 (0.76).

Example 38.02
1-{4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(1-ethyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (135 mg, approx. 246 μmol) and 3,3,3-trifluoropropanoic acid (33 μl, 370 μmol) Example 38.02. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 80.0 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.392 (6.95), 1.410 (16.00), 1.428 (6.76), 2.327 (0.67), 2.365 (1.54), 2.378 (2.43), 2.390 (1.84), 2.406 (1.72), 2.419 (2.37), 2.431 (1.76), 2.518 (3.87), 2.523 (2.64), 2.669 (0.68), 3.456 (1.71), 3.469 (2.41), 3.481 (2.01), 3.493 (1.98), 3.514 (8.15), 3.610 (1.20), 3.638 (3.51), 3.665 (3.30), 3.693 (1.02), 4.117 (0.83), 4.135 (2.41), 4.154 (2.40), 4.171 (0.85), 6.906 (1.98), 6.910 (1.93), 6.919 (2.03), 6.922 (2.11), 7.190 (2.08), 8.243 (3.22), 8.257 (3.12), 10.580 (0.97), 12.021 (1.29).

Example 38.03
cyclopropyl{4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-ethyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (135 mg, approx. 246 μmol) and cyclopropanecarboxylic acid (31 μl, 95% purity, 370 μmol) Example 38.03. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 65.0 mg of the title compound.

LC-MS (Method 2): R_t=1.00 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.674 (1.54), 0.682 (3.51), 0.688 (2.19), 0.695 (1.75), 0.702 (4.26), 0.707 (3.02), 0.714 (3.62), 0.721 (3.60), 0.726 (4.27), 0.733 (1.98), 1.393 (7.22), 1.411 (16.00), 1.429 (7.04), 1.958 (1.58), 2.361 (1.58), 3.511 (8.63), 3.698 (1.46), 4.118 (1.24), 4.136 (3.72), 4.154 (3.71), 4.172 (1.20), 5.756 (1.59), 6.913 (2.21), 6.917 (2.15), 6.926 (2.25), 6.929 (2.28), 7.198 (3.37), 8.245 (3.58), 8.259 (3.39), 10.567 (1.36), 12.010 (1.38).

Example 39.01.01
tert-butyl 4-{[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (53.0 mg, 779 μmol) and di-1H-imidazol-1-ylmethanethione (925 mg, 90% purity, 4.67 mmol) in dichloromethane (30 mL) was added tert-butyl 4-[(2-aminopyridin-4-yl)methyl]piperazine-1-carboxylate (1.14 g, 3.89 mmol), dissolved in dichloromethane (45 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (1.10 g, 97% purity, 4.67 mmol), dissolved in dichloromethane (15 mL) was added and the mixture was stirred at r.t. for 2 h.

Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (0.87 mL, 5.5 mmol) was added. The mixture was stirred at r.t. for 4 h. Further N,N′-dipropan-2-ylcarbodiimide (0.87 mL, 5.5 mmol) was added and the mixture was stirred at 40° C. for 4 h. Saturated sodium chloride solution was added, the mixture was stirred for 30 minutes and was extracted with dichloromethane, dried (sodium sulfate) and the solvent was removed in vacuum.

Aminophase-silicagel chromatography gave 362 mg of the title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=529 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) [ppm]: 0.389 (0.88), 0.393 (0.77), 0.402 (0.87), 0.405 (0.84), 0.537 (0.73), 0.541 (0.72), 0.557 (0.80), 1.394 (16.00), 1.987 (0.91), 2.342 (0.94), 2.354 (1.41), 2.366 (1.03), 3.331 (9.00), 3.348 (1.14), 3.967 (0.82), 3.984 (0.81), 5.759 (1.12), 7.172 (0.81), 8.235 (0.88), 8.248 (0.83).

Example 39.01.02
1-(4-{[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (160 mg, approx. 344 μmol) and 3,3,3-trifluoropropanoic acid (132 mg, 1.03 mmol), Example 39.01.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 104 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.379 (1.53), 0.390 (6.33), 0.394 (5.52), 0.402 (6.13), 0.406 (6.11), 0.416 (2.29), 0.527 (2.28), 0.536 (5.22), 0.541 (5.32), 0.546 (2.93), 0.553 (2.91), 0.557 (5.80), 0.561 (5.00), 0.572 (1.75), 1.235 (0.70), 1.241 (0.91), 1.253 (1.50), 1.261 (1.40), 1.265 (1.10), 1.273 (2.36), 1.281 (1.10), 1.285 (1.35), 1.293 (1.40), 1.305 (0.71), 2.322 (0.64), 2.327 (0.92), 2.332 (0.70), 2.365 (3.21), 2.378 (4.92), 2.390 (3.78), 2.406 (3.55), 2.420 (4.73), 2.431 (3.48), 2.518 (3.14), 2.523 (1.92), 2.664 (0.59), 2.669 (0.85), 2.673 (0.61), 3.456 (3.60), 3.469 (4.89), 3.481 (4.06), 3.493 (4.00), 3.514 (16.00), 3.610 (2.44), 3.638 (6.87), 3.665 (6.48), 3.693 (1.99), 3.967 (5.70), 3.984 (5.65), 6.907 (4.01), 6.910 (3.91), 6.920 (3.88), 6.924 (3.96), 7.188 (5.22), 7.249 (1.25), 7.535 (0.77), 7.626 (0.65), 7.806 (1.00), 8.079 (0.88), 8.120 (0.92), 8.243 (6.26), 8.257 (6.04), 10.584 (2.42), 12.021 (2.56).

Example 39.01.03
cyclopropyl(4-{[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude 6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (160 mg, approx. 344 μmol) and cyclopropanecarboxylic acid (88.9 mg, 1.03 mmol), Example 39.01.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 115 mg of the title compound.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.390 (1.58), 0.394 (1.38), 0.402 (1.52), 0.406 (1.51), 0.536 (1.33), 0.541 (1.31), 0.556 (1.45), 0.561 (1.24), 0.682 (1.61), 0.688 (0.99), 0.702 (1.97), 0.707 (1.64), 0.712 (1.74), 0.719 (1.60), 0.724 (1.95), 0.731 (0.89), 3.335 (16.00), 3.966 (1.50), 3.984 (1.49), 6.915 (1.00), 6.918 (0.99), 6.927 (0.97), 6.931 (0.99), 7.192 (1.47), 8.246 (1.57), 8.259 (1.54).

Example 39.02.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (single stereoisomer A)

embedded image

To a stirred solution of 1H-imidazole (55.1 mg, 809 μmol) and di-1H-imidazol-1-ylmethanethione (962 mg, 90% purity, 4.86 mmol) in dichloromethane (30 mL) was added tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (1.24 g, 4.05 mmol), dissolved in dichloromethane (45 mL) at 0° C. The mixture was stirred at r.t. for 14 h. 4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (1.14 g, 97% purity, 4.86 mmol), dissolved in dichloromethane (15 mL) was added and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and filtered. N,N′-dipropan-2-ylcarbodiimide (0.88 mL, 5.6 mmol) was added. The mixture was stirred at r.t. for 4 h. Further N,N′-dipropan-2-ylcarbodiimide (0.88 mL, 5.6 mmol) was added and the mixture was stirred at 40° C. for 4 h. The solvent was removed in vacuum. Ethyl acetate and water were added and the mixture was stirred at r.t. for 30 minutes. The mixture was extracted with ethyl acetate, dried (sodium sulfate) and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave 391 mg of the title compound.

LC-MS (Method 2): R_t=1.32 min; MS (ESIpos): m/z=543 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.390 (0.92), 0.394 (0.80), 0.402 (0.91), 0.405 (0.90), 0.537 (0.76), 0.541 (0.75), 0.557 (0.82), 0.561 (0.72), 1.274 (2.01), 1.290 (1.91), 1.376 (16.00), 2.083 (1.81), 3.320 (1.26), 3.967 (0.87), 3.984 (0.87), 5.758 (4.92), 7.158 (0.88), 8.238 (0.96), 8.251 (0.89).

Example 39.02.02
1-(4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one (single stereoisomer A)

embedded image

Starting with crude 6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (120 mg, approx. 251 μmol) and 3,3,3-trifluoropropanoic acid (96.2 mg, 752 μmol), Example 39.02.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 61.0 mg of the title compound.

Optical rotation [α]_D+30.4° (from solution in DMSO, c=2.25 mg/mL)

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=553 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.379 (1.00), 0.390 (3.98), 0.394 (3.43), 0.402 (3.84), 0.406 (3.81), 0.416 (1.36), 0.527 (1.41), 0.537 (3.36), 0.542 (3.28), 0.547 (1.78), 0.553 (1.83), 0.558 (3.59), 0.562 (3.06), 0.573 (1.06), 1.273 (1.85), 1.288 (8.10), 1.305 (8.07), 1.987 (0.92), 2.323 (1.49), 2.327 (1.80), 2.332 (1.50), 2.337 (1.68), 2.351 (1.49), 2.364 (1.27), 2.416 (1.80), 2.423 (1.82), 3.422 (2.02), 3.435 (3.89), 3.447 (2.47), 3.453 (2.92), 3.470 (3.84), 3.480 (3.18), 3.578 (1.40), 3.606 (4.04), 3.633 (3.75), 3.661 (1.16), 3.967 (3.75), 3.984 (3.71), 5.759 (16.00), 6.918 (2.49), 6.922 (2.48), 6.932 (2.48), 6.935 (2.50), 7.172 (3.44), 8.247 (4.15), 8.260 (3.89), 10.571 (1.34).

Example 39.02.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone (single stereoisomer A)

embedded image

Starting with crude 6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (120 mg, approx. 251 μmol) and cyclopropanecarboxylic acid (64.7 mg, 752 μmol), Example 39.02.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 58.0 mg of the title compound.

Optical rotation [α]_D+37.10 (from solution in DMSO, c=2.66 mg/mL)

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=511 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.390 (3.29), 0.394 (2.88), 0.402 (3.18), 0.406 (3.23), 0.416 (1.18), 0.527 (1.17), 0.537 (2.74), 0.542 (2.77), 0.547 (1.53), 0.553 (1.51), 0.557 (3.00), 0.562 (2.62), 0.573 (0.93), 0.656 (1.42), 0.663 (3.37), 0.669 (2.05), 0.676 (1.62), 0.683 (4.14), 0.687 (3.40), 0.691 (3.84), 0.698 (3.29), 0.703 (3.81), 0.710 (1.77), 1.172 (0.96), 1.273 (1.45), 1.291 (7.14), 1.308 (6.65), 1.935 (1.44), 1.987 (1.49), 2.327 (1.00), 2.523 (1.43), 3.437 (1.94), 3.453 (2.49), 3.469 (1.84), 3.672 (1.50), 3.967 (3.30), 3.984 (3.27), 5.759 (16.00), 6.927 (2.04), 6.930 (2.08), 6.940 (2.04), 6.944 (2.06), 7.181 (2.92), 8.247 (3.46), 8.260 (3.26).

Example 40.01
3,3,3-trifluoro-1-{4-[(2-{[6-(1-methyl-1H-pyrazol-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 282 μmol) and 3,3,3-trifluoropropanoic acid (54.1 mg, 423 μmol), Example 40.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 39 mg of the title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) [ppm]: 1.146 (1.00), 1.163 (0.99), 1.262 (0.58), 2.019 (1.32), 2.347 (3.85), 2.359 (7.41), 2.370 (7.02), 2.465 (0.83), 2.476 (1.43), 2.489 (1.34), 3.099 (2.51), 3.124 (7.42), 3.149 (7.37), 3.175 (2.52), 3.204 (0.70), 3.229 (1.73), 3.247 (3.23), 3.254 (4.62), 3.260 (4.35), 3.271 (3.22), 3.460 (11.58), 3.491 (3.85), 3.502 (4.66), 3.515 (3.20), 3.540 (2.72), 3.598 (0.45), 3.681 (0.56), 3.694 (0.72), 3.706 (0.61), 3.968 (16.00), 6.550 (4.25), 6.555 (4.30), 6.861 (3.34), 6.864 (3.30), 6.874 (3.44), 6.877 (3.37), 7.007 (0.79), 7.017 (0.55), 7.102 (4.89), 7.397 (3.48), 7.529 (0.73), 7.675 (1.77), 7.909 (0.57), 8.263 (5.60), 8.276 (5.42), 8.311 (0.95), 8.324 (0.88).

Example 40.02
2-cyclopropyl-1-{4-[(2-{[6-(1-methyl-1H-pyrazol-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 282 μmol) and cyclopropylacetic acid (42.3 mg, 423 μmol), Example 40.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 55 mg of the title compound.

LC-MS (Method 2): R_t=1.01 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) [ppm]: 0.133 (2.01), 0.145 (7.40), 0.148 (6.12), 0.157 (7.30), 0.160 (7.78), 0.171 (4.38), 0.182 (2.21), 0.185 (2.50), 0.197 (0.92), 0.527 (2.66), 0.538 (5.87), 0.541 (6.24), 0.547 (3.95), 0.553 (3.39), 0.558 (8.32), 0.561 (7.73), 0.568 (1.69), 0.573 (3.31), 0.577 (1.53), 0.579 (2.35), 0.582 (2.08), 0.594 (0.86), 0.968 (0.68), 0.973 (0.81), 0.976 (0.70), 0.981 (0.52), 0.985 (1.47), 0.988 (1.35), 0.992 (1.39), 0.997 (1.09), 1.001 (1.26), 1.005 (2.50), 1.010 (1.28), 1.013 (1.28), 1.017 (1.39), 1.022 (1.76), 1.025 (1.60), 1.030 (0.89), 1.034 (0.96), 1.037 (0.96), 1.042 (1.29), 1.048 (1.10), 1.055 (0.77), 1.060 (0.61), 1.063 (0.57), 1.067 (1.94), 1.075 (0.98), 1.086 (0.92), 1.093 (0.44), 1.259 (0.49), 2.203 (12.70), 2.220 (12.47), 2.239 (0.50), 2.264 (4.29), 2.274 (0.74), 2.281 (4.14), 2.291 (0.50), 2.345 (3.59), 2.360 (7.87), 2.371 (8.10), 2.385 (4.12), 2.432 (1.34), 2.444 (2.80), 2.456 (3.07), 2.469 (1.58), 3.313 (3.36), 3.325 (4.51), 3.337 (3.26), 3.467 (14.60), 3.487 (1.71), 3.528 (7.00), 3.545 (4.34), 3.556 (3.11), 3.582 (0.75), 3.656 (1.06), 3.669 (1.41), 3.680 (1.08), 3.951 (0.84), 3.973 (16.00), 6.553 (4.22), 6.557 (4.16), 6.900 (3.71), 6.903 (3.90), 6.914 (4.01), 6.917 (3.96), 7.007 (1.60), 7.010 (1.10), 7.023 (1.10), 7.128 (7.10), 7.395 (4.33), 7.399 (4.26), 7.454 (0.57), 7.529 (0.78), 7.671 (1.84), 7.901 (0.87), 8.013 (0.54), 8.266 (6.85), 8.279 (6.59), 8.304 (2.03), 8.317 (1.91).

Example 40.03
cyclopropyl{4-[(2-{[6-(1-methyl-1H-pyrazol-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 282 μmol) and cyclopropanecarboxylic acid (36.4 mg, 423 μmol), Example 40.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 0.716 (1.84), 0.726 (5.51), 0.733 (6.37), 0.742 (3.99), 0.746 (6.10), 0.751 (3.91), 0.754 (6.99), 0.758 (2.88), 0.763 (2.89), 0.767 (1.45), 0.771 (1.87), 0.778 (2.14), 0.787 (0.73), 0.951 (2.35), 0.960 (6.88), 0.963 (4.71), 0.967 (6.40), 0.972 (7.55), 0.979 (6.56), 0.983 (3.24), 0.986 (2.06), 0.989 (3.47), 0.995 (2.39), 1.002 (1.99), 1.012 (0.78), 1.648 (1.11), 1.659 (2.03), 1.667 (2.26), 1.671 (1.67), 1.679 (3.86), 1.688 (1.65), 1.691 (2.17), 1.699 (1.97), 1.706 (1.01), 1.711 (1.15), 1.714 (1.04), 1.718 (0.69), 1.726 (1.34), 1.735 (0.69), 1.738 (0.78), 1.746 (0.76), 1.758 (0.45), 2.038 (0.45), 2.401 (5.70), 2.462 (1.27), 3.481 (15.71), 3.540 (4.79), 3.576 (8.71), 3.690 (1.32), 3.972 (16.00), 6.556 (4.82), 6.562 (4.78), 6.928 (4.13), 6.931 (3.97), 6.941 (4.19), 6.944 (3.96), 7.007 (1.02), 7.023 (0.95), 7.036 (0.95), 7.131 (7.55), 7.394 (4.07), 7.460 (0.50), 7.529 (1.24), 7.675 (2.01), 7.916 (0.72), 8.273 (7.01), 8.286 (6.73), 8.309 (1.74), 8.324 (1.65).

Example 40.04
cyclobutyl{4-[(2-{[6-(1-methyl-1H-pyrazol-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-methyl-1H-pyrazol-3-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 282 μmol) and cyclobutanecarboxylic acid (42.3 mg, 423 μmol), Example 40.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 50 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, CHLOROFORM-d) δ [ppm]: 1.252 (0.50), 1.299 (1.03), 1.804 (0.58), 1.820 (0.81), 1.826 (1.25), 1.828 (1.34), 1.832 (1.16), 1.839 (1.22), 1.842 (1.30), 1.849 (1.37), 1.853 (2.01), 1.856 (1.86), 1.863 (1.38), 1.877 (1.57), 1.888 (0.96), 1.897 (1.96), 1.918 (3.52), 1.925 (1.30), 1.940 (3.09), 1.946 (2.14), 1.963 (1.67), 1.967 (1.66), 1.983 (0.48), 1.990 (0.96), 1.993 (0.71), 2.015 (0.93), 2.021 (0.41), 2.037 (0.77), 2.043 (0.62), 2.057 (1.04), 2.066 (1.32), 2.072 (1.02), 2.077 (1.61), 2.087 (3.04), 2.093 (1.99), 2.097 (2.10), 2.099 (1.99), 2.102 (2.07), 2.109 (3.11), 2.118 (2.47), 2.123 (1.74), 2.130 (1.59), 2.132 (1.62), 2.139 (1.38), 2.154 (0.72), 2.166 (0.42), 2.229 (0.55), 2.236 (0.63), 2.239 (0.93), 2.244 (0.57), 2.248 (0.65), 2.251 (0.65), 2.254 (0.65), 2.260 (1.24), 2.263 (1.26), 2.267 (1.54), 2.272 (1.16), 2.289 (3.63), 2.294 (2.98), 2.301 (3.75), 2.311 (7.30), 2.313 (7.01), 2.323 (4.51), 2.334 (3.04), 2.340 (3.55), 2.346 (3.51), 2.350 (4.14), 2.354 (3.93), 2.363 (5.38), 2.375 (4.46), 2.382 (2.29), 2.398 (2.61), 2.404 (1.65), 2.407 (1.87), 2.420 (1.54), 2.431 (1.80), 2.446 (1.18), 2.451 (0.49), 3.141 (0.55), 3.160 (1.92), 3.163 (1.99), 3.182 (2.86), 3.184 (2.88), 3.190 (0.96), 3.206 (2.83), 3.211 (4.00), 3.225 (4.69), 3.236 (3.47), 3.261 (0.61), 3.354 (1.16), 3.366 (1.36), 3.379 (1.12), 3.456 (12.07), 3.520 (7.21), 3.527 (3.83), 3.541 (2.56), 3.567 (0.44), 3.629 (0.88), 3.641 (1.15), 3.653 (0.88), 3.973 (16.00), 6.553 (4.07), 6.558 (4.02), 6.898 (3.24), 6.902 (3.37), 6.912 (3.44), 6.915 (3.38), 7.006 (0.70), 7.048 (0.93), 7.052 (0.86), 7.060 (0.96), 7.064 (0.91), 7.109 (5.86), 7.395 (3.42), 7.399 (3.37), 7.528 (0.83), 7.621 (0.53), 7.667 (2.03), 7.688 (1.36), 7.860 (0.82), 7.909 (0.61), 8.191 (1.36), 8.193 (1.39), 8.203 (1.32), 8.205 (1.41), 8.222 (1.31), 8.261 (5.52), 8.274 (5.27).

Example 41.01
tert-butyl 4-[(2-{[6-(1-methyl-1H-1,2,4-triazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave 196.0 mg (26% yield) of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=490 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (15.61), 1.396 (16.00), 1.988 (0.58), 2.361 (1.27), 3.506 (1.73), 3.939 (2.53), 3.995 (1.60), 5.759 (2.17), 7.954 (1.49), 8.269 (0.80).

Example 41.02
3,3,3-trifluoro-1-{4-[(2-{[6-(1-methyl-1H-1,2,4-triazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(1-methyl-1H-1,2,4-triazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (111 mg, approx. 261 μmol) and 3,3,3-trifluoropropanoic acid (69 μl, 780 μmol), Example 41.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 56.0 mg of the title compound.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=500 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=2.41 (dt, 4H), 3.44-3.57 (m, 6H), 3.66 (q, 2H), 4.00 (br s, 3H), 6.96 (d, 1H), 7.20 (s, 1H), 7.31-8.03 (m, 4H), 8.29 (d, 1H), 10.65-10.89 (m, 1H), 12.31 (s, 1H).

Example 41.03
cyclopropyl{4-[(2-{[6-(1-methyl-1H-1,2,4-triazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-methyl-1H-1,2,4-triazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (97.6 mg, approx. 229 μmol) and cyclopropanecarboxylic acid (54 μl, 690 μmol), Example 41.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 39.0 mg of the title compound.

LC-MS (Method 2): R_t=0.86 min; MS (ESIpos): m/z=458 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.66-0.76 (m, 4H), 1.93-2.02 (m, 1H), 2.34-2.48 (m, 4H), 3.45-3.77 (m, 6H), 4.00 (s, 3H), 6.97 (d, 1H), 7.21 (s, 1H), 7.32-8.04 (m, 4H), 8.29 (d, 1H), 10.64-10.87 (m, 1H), 12.32 (s, 1H).

Example 42.01
tert-butyl 4-{[2-({6-[1-methyl-3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

A mixture of tert-butyl 4-({2-[(6-{[1-methyl-2-(3-methylbutanimidoyl)hydrazinyl]carbonyl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate (125 mg, 222 μmol) and sodium acetate (20.0 mg, 244 μmol) in 1-propanol 6 mL) and water (3 mL) was heated to 100° C. for 14 h. The solvent was removed in vacuum. Aminophase-silicagel chromatography gave 35.0 mg (26% yield) of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=546 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.946 (5.75), 0.963 (5.95), 1.397 (16.00), 2.350 (0.90), 2.363 (1.32), 2.375 (0.95), 2.475 (1.77), 3.352 (1.12), 3.505 (1.76), 3.922 (3.87), 5.752 (1.30), 7.199 (0.73), 8.260 (0.82), 8.273 (0.78).

Example 42.02
3,3,3-trifluoro-1-(4-{[2-({6-[1-methyl-3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with crude 6-[1-methyl-3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (23.0 mg, approx. 44.4 μmol) and 3,3,3-trifluoropropanoic acid (17.0 mg, 133 μmol) Example 42.2. was prepared analogously to the procedure for the preparation of Example 02.02.

Yield: 16.0 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=556 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.832 (0.46), 0.947 (15.70), 0.963 (16.00), 2.040 (0.84), 2.057 (1.06), 2.073 (0.84), 2.327 (0.53), 2.375 (1.28), 2.388 (1.97), 2.400 (1.49), 2.417 (1.45), 2.429 (1.93), 2.441 (1.41), 2.476 (5.53), 2.523 (1.34), 2.669 (0.50), 3.463 (1.38), 3.477 (1.93), 3.489 (1.59), 3.499 (1.55), 3.513 (1.94), 3.530 (5.81), 3.601 (0.99), 3.629 (2.83), 3.656 (2.69), 3.683 (0.84), 3.924 (5.17), 6.941 (1.42), 6.957 (1.44), 7.204 (2.57), 7.449 (0.91), 8.271 (2.45), 8.283 (2.34), 12.273 (1.27).

Example 43.01
cyclopropyl{4-[(2-{[6-(1H-imidazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 2-iodo-1H-imidazole (174 mg, 896 μmol) and cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (150 mg, 299 μmol) in dioxane (2.0 mL) and water (0.5 mL) was added sodium carbonate (130 mg, 1.22 mmol) and Pd(dppf)C₂. CH₂Cl₂(48.8 mg, 59.7 μmol) and Tetrakis(triphenylphosphin)palladium (69.0 mg, 59.7 μmol). The mixture was heated to reflux for 36 h. Further 2-iodo-1H-imidazole (174 mg, 896 μmol) Pd(dppf)Cl₂. CH₂Cl₂(48.8 mg, 59.7 μmol) and Tetrakis(triphenylphosphin)palladium (69.0 mg, 59.7 μmol). were added and the mixture was heated to reflux for 7 h. Methanol was added, the mixture was filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was crystallized from ethanol to give 20.0 mg (14% yield) of the title compound.

LC-MS (Method 5): R_t=2.17 min; MS (ESIpos): m/z=443 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.490 (1.57), 2.495 (3.44), 2.500 (4.85), 2.505 (3.44), 2.509 (1.55), 3.303 (16.00).

Example 43.02
cyclopropyl{4-[(2-{[6-(4-methyl-1H-imidazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 2-bromo-4-methyl-1H-imidazole (240 mg, 1.49 mmol) and cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (150 mg, 299 μmol) in dioxane (2.0 mL) and water (0.5 mL) was added sodium carbonate (130 mg, 1.22 mmol) and Pd(dppf)C₂. CH₂Cl₂(48.8 mg, 59.7 μmol) and Tetrakis(triphenylphosphin)palladium (69.0 mg, 59.7 μmol). The mixture was heated to reflux for 24 h. Methanol was added, the mixture was filtered and the solvent was removed in vacuum. Silicagel chromatography gave 19.0 mg (13% yield) of the title compound.

LC-MS (Method 5): R_t=2.31 min; MS (ESIpos): m/z=457 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.691 (1.89), 0.711 (2.62), 0.718 (2.69), 0.731 (2.52), 1.234 (0.47), 1.952 (0.59), 1.964 (0.84), 2.341 (6.66), 2.395 (0.88), 2.495 (10.55), 2.500 (13.36), 2.504 (11.34), 3.169 (0.43), 3.309 (16.00), 3.565 (1.65), 3.718 (0.95), 6.986 (1.09), 6.999 (1.14), 7.227 (1.50), 7.408 (1.77), 7.639 (1.33), 7.997 (2.12), 8.299 (1.25), 8.312 (1.25).

Example 43.03
cyclopropyl{4-[(2-{[6-(4-cyclopropyl-1H-imidazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (200 mg, 398 μmol) and 4-cyclopropyl-2-iodo-1H-imidazole (200 mg, 855 μmol), Example 43.03 was prepared analogously to the procedure for the preparation of Example 43.02.

Yield: 8 mg (4%) of the title compound.

LC-MS (Method 5): R_t=2.46 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.61-0.77 (m, 6H), 0.77-0.93 (m, 2H), 1.85 (m, 1H), 1.96 (m, 1H), 2.41 (m, 4H), 3.52 (m, 4H), 3.70 (s, 1H), 6.87 (s, 1H), 6.94 (m, 1H), 7.21 (s, 1H), 7.43 (bs, 1H), 7.60 (m, 1H), 7.94 (bs, 1H), 8.26 (d, 1H), 10.85 (bs, 1H), 12.18 (bs, 1H).

13C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.86, 6.89, 10.1, 40.3, 44.8, 52.4, 53.1, 60.6, 110.4, 116.4, 145.9, 146.9, 149.4, 150.4, 153.6, 170.9.

Example 44.01
1-(cyclopropylmethyl)-4-{2-[(4-{[4-(3,3,3-trifluoropropanoyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}pyridin-2(1H)-one

embedded image

Starting with crude 1-(cyclopropylmethyl)-4-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyridin-2(1H)-one hydrochloride (150 mg, approx. 241 μmol) and 3,3,3-trifluoropropanoic acid (33 μl, 98% purity, 360 μmol), Example 44.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=566 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.36-0.44 (m, 2H), 0.46-0.55 (m, 2H), 1.16-1.35 (m, 1H), 2.41 (dt, 4H), 3.45-3.58 (m, 6H), 3.66 (q, 2H), 3.76 (d, 2H), 6.63 (br d, 2H), 6.95 (br d, 1H), 7.20 (s, 1H), 7.34-7.91 (m, 4H), 8.24-8.33 (m, 1H), 10.72 (br s, 1H), 11.45-12.91 (m, 1H).

Example 44.02
4-{2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}-1-(cyclopropylmethyl)pyridin-2(1H)-one

embedded image

Starting with crude 1-(cyclopropylmethyl)-4-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyridin-2(1H)-one hydrochloride (150 mg, approx. 241 μmol) and cyclopropanecarboxylic acid (29 μl, 98% purity, 360 μmol), Example 44.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 57.0 mg of the title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=524 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.383 (1.46), 0.395 (5.79), 0.398 (5.62), 0.407 (6.77), 0.410 (5.92), 0.419 (2.66), 0.435 (0.71), 0.443 (0.65), 0.455 (0.82), 0.471 (2.38), 0.479 (5.34), 0.484 (4.49), 0.490 (3.34), 0.500 (5.86), 0.504 (4.63), 0.516 (1.70), 0.666 (0.95), 0.677 (3.00), 0.685 (7.08), 0.690 (4.29), 0.697 (3.54), 0.704 (8.75), 0.709 (7.32), 0.713 (7.97), 0.721 (7.25), 0.725 (8.51), 0.732 (4.05), 0.745 (1.12), 1.211 (0.82), 1.224 (1.77), 1.231 (2.14), 1.243 (2.69), 1.255 (1.57), 1.263 (1.60), 1.275 (0.89), 1.935 (0.78), 1.948 (1.70), 1.955 (1.80), 1.967 (3.10), 1.973 (1.50), 1.980 (1.77), 1.986 (1.70), 1.998 (0.78), 2.074 (0.75), 2.318 (0.89), 2.323 (1.80), 2.327 (2.55), 2.331 (2.08), 2.337 (1.43), 2.363 (3.34), 2.446 (3.47), 2.518 (16.00), 2.523 (13.07), 2.659 (0.75), 2.665 (1.63), 2.669 (2.28), 2.673 (1.63), 2.678 (0.75), 3.525 (14.84), 3.709 (3.20), 3.746 (10.08), 3.764 (9.94), 6.618 (6.16), 6.941 (3.71), 6.944 (3.78), 6.954 (3.88), 6.957 (3.91), 7.228 (2.86), 7.411 (2.42), 7.757 (4.83), 7.776 (4.83), 8.268 (5.99), 8.282 (5.79), 12.235 (0.75).

Example 44.03
4-{2-[(4-{[4-(cyclobutylcarbonyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}-1-(cyclopropylmethyl)pyridin-2(1H)-one

embedded image

Starting with crude 1-(cyclopropylmethyl)-4-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyridin-2(1H)-one hydrochloride (150 mg, approx. 241 μmol) and cyclobutanecarboxylic acid (35 μl, 98% purity, 360 μmol), Example 44.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.08 min; MS (ESIneg): m/z=536 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.36-0.44 (m, 2H), 0.46-0.56 (m, 2H), 1.17-1.33 (m, 1H), 1.67-1.80 (m, 1H), 1.81-1.95 (m, 1H), 1.99-2.22 (m, 4H), 2.28-2.42 (m, 4H), 3.43-3.59 (m, 4H), 3.76 (d, 2H), 6.62 (br s, 2H), 6.94 (d, 1H), 7.20 (s, 1H), 7.32-7.91 (m, 4H), 8.28 (d, 1H), 10.72 (br s, 1H), 12.24 (br s, 1H).

Example 45.01.01
3,3,3-trifluoro-1-{4-[(2-{[6-(pyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-5-yl)-1H-benzimidazol-2-amine hydrochloride (211 mg, approx. 426 μmol), 3,3,3-trifluoropropanoic acid (75 μl, 850 μmol), T3P (450 μl, 50% solution in DMF, 770 μmol) and DIPEA (370 μl, 2.1 mmol) were solubilized in DMF (21 mL) and the reaction was stirred at r.t. for 2 days. The reaction mixture was then diluted with water and extracted with dichloromethane. The aqueous phase was then basified with saturated sodium bicarbonate solution and extracted with a mixture of dichloromethane/isopropanol (8/2). The organic phase was dried (magnesium sulfate) filtered and concentrated under reduced pressure. The crude mixture was purified by preparative HPLC (water/acetonitrile with ammonia as additive) and 8 mg of the title compound were obtained.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=497 [M+H]⁺

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.064 (1.39), 1.176 (0.67), 1.192 (0.63), 1.228 (1.79), 1.239 (1.84), 1.254 (2.33), 1.272 (1.21), 2.072 (5.65), 2.082 (0.90), 2.322 (1.79), 2.327 (2.42), 2.332 (1.93), 2.336 (1.17), 2.383 (7.39), 2.425 (7.31), 2.523 (6.45), 2.539 (1.48), 2.660 (0.81), 2.664 (1.57), 2.669 (2.24), 2.673 (1.61), 3.471 (7.84), 3.483 (7.53), 3.509 (8.87), 3.527 (16.00), 3.609 (2.91), 3.636 (7.26), 3.663 (6.90), 3.691 (2.51), 4.047 (3.41), 6.939 (4.48), 6.951 (4.57), 7.204 (4.62), 7.464 (2.69), 7.811 (1.03), 8.271 (5.38), 8.283 (5.15), 9.141 (13.45), 10.715 (1.48), 12.259 (1.17).

Example 45.01.02
2-cyclopropyl-1-{4-[(2-{[6-(pyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-5-yl)-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 262 μmol) and cyclopropylacetic acid (78.7 mg, 787 μmol), Example 45.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 4 mg of the title compound.

LC-MS (Method 4): R_t=0.94 min; MS (ESIpos): m/z=469 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.05-0.16 (m, 2H), 0.39-0.48 (m, 2H), 0.88-1.00 (m, 1H), 2.25 (d, 2H), 2.34-2.43 (m, 4H), 3.40-3.55 (m, 6H), 6.95 (d, 1H), 7.21 (s, 1H), 7.39-7.52 (m, 1.5H), 7.62 (br d, 0.5H), 7.75-7.90 (m, 1H), 8.28 (d, 1H), 9.06-9.23 (m, 3H), 10.71 (br d, 1H), 12.25 (br d, 1H).

Example 45.01.03
cyclopropyl{4-[(2-{[6-(pyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(pyrimidin-5-yl)-1H-benzimidazol-2-amine hydrochloride (211 mg, approx. 426 μmol) and cyclopropanecarboxylic acid (68 μl, 850 μmol) Example 45.01.03 was prepared analogously to the procedure for the preparation of Example 45.01.01.

Yield: 20.0 mg of the title compound.

LC-MS (Method 2): R_t=0.92 min; MS (ESIpos): m/z=455 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.662 (0.84), 0.674 (2.41), 0.682 (5.23), 0.687 (3.43), 0.694 (2.76), 0.701 (6.28), 0.707 (5.04), 0.713 (5.61), 0.720 (5.52), 0.724 (6.48), 0.731 (3.25), 0.744 (0.80), 1.928 (0.66), 1.941 (1.33), 1.948 (1.40), 1.952 (1.07), 1.960 (2.25), 1.966 (1.14), 1.972 (1.30), 1.979 (1.16), 2.073 (0.52), 2.327 (0.64), 2.332 (0.71), 2.361 (2.57), 2.467 (0.85), 3.385 (0.92), 3.502 (2.67), 3.521 (11.47), 3.703 (2.40), 5.756 (0.40), 6.943 (2.91), 6.946 (2.91), 6.956 (3.02), 6.959 (2.95), 7.212 (5.51), 7.481 (1.32), 7.789 (0.77), 8.273 (4.78), 8.286 (4.56), 8.780 (0.56), 9.062 (0.50), 9.094 (1.03), 9.114 (1.92), 9.120 (2.39), 9.126 (16.00), 9.137 (2.25), 9.143 (2.11), 10.727 (0.80), 12.245 (0.80).

Example 45.02.01
1-{4-[(2-{[6-(2-chloropyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(2-chloropyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (305 mg, approx. 575 μmol) and 3,3,3-trifluoropropanoic acid (150 μl, 1.7 mmol), Example 45.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 5.30 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=531 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.232 (1.88), 2.318 (1.18), 2.322 (2.59), 2.326 (3.59), 2.332 (2.59), 2.336 (1.24), 2.370 (2.35), 2.382 (3.53), 2.394 (2.65), 2.412 (2.59), 2.425 (3.59), 2.437 (2.65), 2.518 (16.00), 2.522 (10.71), 2.660 (1.18), 2.664 (2.59), 2.669 (3.47), 2.673 (2.53), 2.678 (1.18), 3.395 (1.06), 3.459 (2.71), 3.473 (3.65), 3.484 (3.06), 3.495 (2.94), 3.510 (3.65), 3.528 (9.24), 3.610 (1.82), 3.638 (5.00), 3.653 (0.88), 3.665 (4.94), 3.679 (0.71), 3.693 (1.94), 3.700 (0.82), 6.944 (2.41), 6.955 (2.29), 7.206 (4.00), 7.458 (1.00), 7.482 (1.12), 7.607 (0.88), 7.627 (0.71), 7.810 (1.12), 7.868 (0.82), 8.271 (4.12), 8.284 (3.88), 9.075 (1.71), 9.131 (2.29), 10.732 (1.06), 12.254 (1.00), 12.285 (0.76).

Example 45.02.02
{4-[(2-{[6-(2-chloropyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

Starting with crude 6-(2-chloropyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (305 mg, approx. 575 μmol) and cyclopropanecarboxylic acid (140 μl, 1.7 mmol), Example 45.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 9.14 mg of the title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=489 [M+H]⁺

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.677 (1.61), 0.685 (3.36), 0.690 (2.09), 0.698 (2.02), 0.705 (4.30), 0.709 (3.59), 0.713 (3.81), 0.720 (3.44), 0.726 (3.70), 0.733 (1.76), 1.907 (0.90), 1.968 (1.38), 2.084 (2.39), 2.322 (1.79), 2.326 (2.50), 2.332 (1.83), 2.336 (1.12), 2.363 (1.50), 2.518 (9.46), 2.522 (6.62), 2.664 (1.68), 2.668 (2.32), 2.673 (1.64), 2.727 (2.54), 2.729 (2.24), 2.888 (3.10), 3.257 (0.67), 3.511 (2.09), 3.527 (5.53), 3.707 (1.46), 3.965 (1.12), 5.759 (16.00), 6.951 (1.27), 6.963 (1.16), 7.212 (2.58), 8.272 (2.36), 8.285 (2.21), 8.496 (1.12), 9.074 (1.42), 9.132 (2.02).

Example 45.03.01
3,3,3-trifluoro-1-{4-[(2-{[6-(2-methylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(2-methylpyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (204 mg, approx. 400 μmol) and 3,3,3-trifluoropropanoic acid (110 μl, 1.2 mmol), Example 45.03.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 20.5 mg of the title compound.

LC-MS (Method 2): R_t=0.99 min; MS (ESIpos): m/z=511 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.323 (0.94), 2.327 (1.28), 2.331 (0.94), 2.369 (1.71), 2.383 (2.63), 2.395 (1.97), 2.413 (1.95), 2.425 (2.65), 2.437 (1.99), 2.518 (5.72), 2.523 (3.89), 2.657 (16.00), 2.665 (2.26), 2.669 (1.79), 2.674 (1.12), 3.159 (2.48), 3.172 (2.71), 3.459 (1.83), 3.473 (2.54), 3.485 (2.10), 3.495 (2.04), 3.510 (2.59), 3.526 (7.37), 3.611 (1.20), 3.638 (3.50), 3.666 (3.28), 3.693 (1.04), 4.097 (0.67), 4.110 (0.63), 5.760 (1.81), 6.935 (1.89), 6.938 (1.89), 6.947 (1.85), 6.951 (1.89), 7.208 (3.22), 7.451 (0.94), 8.266 (3.20), 8.280 (3.11), 8.977 (1.32), 9.010 (1.47), 10.702 (1.36).

Example 45.03.02
cyclopropyl{4-[(2-{[6-(2-methylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-methylpyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (204 mg, approx. 400 μmol) and cyclopropanecarboxylic acid (96 μl, 1.2 mmol), Example 45.03.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 23.6 mg of the title compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=469 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.677 (1.69), 0.685 (3.76), 0.691 (2.29), 0.698 (2.03), 0.705 (4.66), 0.709 (3.83), 0.713 (4.09), 0.720 (3.61), 0.726 (4.17), 0.733 (1.84), 1.065 (0.60), 1.751 (0.68), 1.948 (0.94), 1.955 (0.94), 1.967 (1.58), 1.979 (0.86), 1.986 (0.79), 2.318 (0.86), 2.322 (1.80), 2.326 (2.48), 2.332 (1.92), 2.336 (1.13), 2.364 (1.62), 2.446 (1.69), 2.518 (9.16), 2.522 (6.31), 2.656 (16.00), 2.664 (2.93), 2.668 (2.70), 2.673 (1.84), 2.678 (0.86), 3.504 (1.80), 3.511 (1.88), 3.525 (7.14), 3.709 (1.58), 6.943 (1.77), 6.946 (1.80), 6.956 (1.80), 6.959 (1.77), 7.209 (3.38), 7.452 (1.09), 8.268 (3.12), 8.283 (3.08), 8.975 (1.31), 9.013 (1.54).

Example 45.04.01
cyclopropyl{4-[(2-{[6-(2-cyclopropylpyrimidin-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(2-cyclopropylpyrimidin-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (366 mg, approx. 683 μmol) and cyclopropanecarboxylic acid (160 μl, 2.0 mmol), Example 45.04.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 24.4 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIneg): m/z=493 [M−H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.665 (0.90), 0.677 (2.52), 0.685 (5.61), 0.690 (3.48), 0.698 (2.90), 0.704 (6.84), 0.708 (5.87), 0.713 (6.32), 0.720 (5.61), 0.725 (6.52), 0.732 (3.03), 0.745 (0.77), 0.821 (0.65), 0.829 (0.90), 0.833 (0.77), 0.835 (0.77), 0.840 (0.90), 0.863 (0.58), 0.870 (0.71), 0.883 (0.58), 0.889 (1.10), 0.897 (0.58), 0.999 (0.65), 1.013 (0.90), 1.026 (3.03), 1.033 (6.06), 1.038 (5.16), 1.045 (6.00), 1.053 (6.52), 1.060 (2.58), 1.067 (2.84), 1.073 (5.61), 1.080 (2.52), 1.093 (0.71), 1.230 (0.71), 1.907 (0.65), 1.936 (0.65), 1.948 (1.35), 1.955 (1.42), 1.959 (1.03), 1.967 (2.45), 1.973 (1.10), 1.979 (1.35), 1.986 (1.23), 2.207 (0.77), 2.220 (1.42), 2.227 (1.48), 2.233 (1.03), 2.240 (2.71), 2.248 (1.03), 2.252 (1.42), 2.259 (1.29), 2.271 (0.71), 2.318 (1.42), 2.322 (3.03), 2.326 (4.19), 2.332 (3.10), 2.336 (1.74), 2.364 (2.39), 2.444 (2.52), 2.518 (16.00), 2.522 (11.10), 2.539 (1.35), 2.660 (1.29), 2.664 (2.90), 2.668 (3.94), 2.673 (2.77), 2.678 (1.23), 3.525 (8.77), 3.632 (1.10), 3.641 (0.71), 3.644 (1.10), 3.648 (0.71), 3.656 (1.23), 3.665 (0.65), 3.670 (0.77), 3.675 (0.97), 3.681 (1.42), 3.685 (1.68), 3.692 (2.58), 3.694 (2.90), 3.709 (3.42), 3.712 (3.10), 3.718 (2.52), 3.723 (2.06), 3.728 (1.35), 3.733 (0.97), 3.738 (0.71), 4.124 (0.84), 4.136 (0.84), 4.149 (0.77), 4.214 (1.42), 6.941 (2.77), 6.944 (2.84), 6.954 (2.84), 6.957 (2.84), 7.209 (4.90), 7.377 (0.77), 7.573 (0.65), 7.582 (0.71), 7.593 (0.65), 7.601 (0.58), 7.706 (0.84), 7.710 (0.84), 8.269 (4.65), 8.281 (4.45), 8.898 (0.71), 8.939 (2.13), 10.690 (1.16), 12.222 (0.77).

Example 45.05.01
3,3,3-trifluoro-1-(4-{[2-({6-[2-(methylsulfanyl)pyrimidin-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with crude 6-[2-(methylsulfanyl)pyrimidin-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (183 mg, approx. 338 μmol) and 3,3,3-trifluoropropanoic acid (60 μl, 680 μmol) Example 45.05.01 was prepared analogously to the procedure for the preparation of Example 45.01.01.

Yield: 4.0 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=543 [M+H]⁺

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.229 (4.12), 2.390 (1.33), 2.433 (1.28), 2.569 (16.00), 3.475 (1.49), 3.485 (1.31), 3.508 (1.40), 3.533 (2.78), 3.638 (1.88), 3.665 (1.77), 6.942 (1.25), 6.955 (1.46), 7.208 (2.37), 8.271 (1.73), 8.284 (1.62), 8.965 (3.13).

Example 45.05.02
2-cyclopropyl-1-(4-{[2-({6-[2-(methylsulfanyl)pyrimidin-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)ethanone

embedded image

Starting with crude 6-[2-(methylsulfanyl)pyrimidin-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, approx. 240 μmol) and cyclopropylacetic acid (72.0 mg, 720 μmol), Example 45.05.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 9 mg of the title compound.

LC-MS (Method 4): R_t=1.13 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.06-0.14 (m, 2H), 0.39-0.48 (m, 2H), 0.88-0.99 (m, 1H), 2.25 (d, 2H), 2.34-2.42 (m, 4H), 2.57 (s, 3H), 3.40-3.56 (m, 6H), 6.94 (d, 1H), 7.20 (s, 1H), 7.38 (br d, 0.5H), 7.44 (br s, 1H), 7.59 (br d, 0.5H), 7.70-7.84 (m, 1H), 8.27 (d, 1H), 8.94 (s, 1H), 8.99 (s, 1H), 10.69 (br s, 1H), 12.22 (br d, 1H).

Example 45.05.03
cyclopropyl(4-{[2-({6-[2-(methylsulfanyl)pyrimidin-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude 6-[2-(methylsulfanyl)pyrimidin-5-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (183 mg, approx. 338 μmol) and cyclopropanecarboxylic acid (54 μl, 680 μmol) Example 45.05.03 was prepared analogously to the procedure for the preparation of Example 45.01.01.

Yield: 17.0 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=501 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.677 (1.09), 0.684 (2.44), 0.689 (1.59), 0.696 (1.30), 0.703 (2.96), 0.708 (2.67), 0.712 (2.82), 0.720 (2.52), 0.724 (2.86), 0.731 (1.36), 1.964 (0.98), 2.363 (1.22), 2.446 (1.27), 2.568 (16.00), 3.499 (1.33), 3.523 (4.62), 3.706 (1.17), 6.941 (1.32), 6.956 (1.35), 7.210 (1.94), 8.268 (1.87), 8.281 (1.78), 8.965 (1.50).

Example 46.01
cyclopropyl{4-[(2-{[6-(3-methoxypyridazin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of {4-[(2-{[6-(6-chloro-3-methoxypyridazin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl) methanone (190 mg, 366 μmol) in methanol (2 mL) was added palladium on carbon (10% w/w palladium, 200 mg) and the mixture was hydrogenated at 40° C. at 4 bar hydrogen atmosphere for 2 h. Methanol was added, the mixture was filtered through celite and the solution was concentrated in vacuum. A saturated solution of sodium bicarbonate was added and the mixture was extracted with ethyl acetate. The organic phase was dried (magnesium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave 37 mg (21% yield) of the title compound.

LC-MS (Method 5): R_t=2.52 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.70 (m, 4H), 1.95 (m, 1H), 2.41 (m, 4H), 3.52 (s, 4H), 3.70 (s, 2H), 4.11 (s, 3H), 6.95 (d, 1H), 7.22 (s, 1H), 7.30-8.05 (m, 4H), 8.28 (d, 1H), 8.90 (d, 1H), 10.69 (s, 1H), 12.26 (s, 1H). 13C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.9, 10.2, 41.6, 44.8, 52.4, 53.1, 54.5, 60.6, 110.5, 116.6, 127.4, 130.1, 146.9, 148.0, 149.5, 153.5, 162.0, 170.9.

Example 46.02
{4-[(2-{[6-(6-chloro-3-methoxypyridazin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (300 mg, 597 μmol) and 6-chloro-4-iodo-3-methoxypyridazine (300 mg, 1.11 mmol) Example 46.02 was prepared analogously to the procedure for the preparation of Example 08.01.

Yield: 242 mg (74%) of the title compound.

LC-MS (Method 5): R_t=2.81 min; MS (ESIpos): m/z=519 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.70 (m, 4H), 1.95 (m, 1H), 2.40 (m, 4H), 3.52 (s, 4H), 3.69 (s, 2H), 4.10 (s, 3H), 6.95 (d, 1H), 7.21 (s, 1H), 7.28-7.69 (m, 3H), 7.82 (d, 1H), 8.28 (d, 1H), 10.71 (s, 1H), 12.30 (s, 1H).

¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=7.0, 10.2, 41.6, 44.9, 52.4, 53.1, 55.2, 60.6, 110.6, 116.7, 128.2, 133.7, 147.0, 149.6, 151.0, 153.5, 161.8, 171.1.

Example 47.01
cyclopropyl{4-[(2-{[6-(6-methoxypyridazin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of 3-chloro-6-methoxypyridazine (216 mg, 1.49 mmol) and cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (150 mg, 299 μmol) in ioxane (1.9 mL) and water (380 μl) was added sodium carbonate (130 mg, 1.22 mmol) and Pd(dppf)Cl₂. CH₂Cl₂(48.8 mg, 59.7 μmol) and PdCl₂(PPh₃)₂(41.9 mg, 59.7 μmol). The mixture was heated to reflux for 42 h. Methanol was added, the mixture was filtered and the solvent was removed in vacuum. Silicagel chromatography gave 29.0 mg (19% yield) of the title compound.

LC-MS (Method 5): R_t=2.72 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.490 (0.58), 2.495 (1.24), 2.500 (1.74), 2.505 (1.24), 2.509 (0.58), 3.305 (16.00), 4.077 (2.13).

Example 47.02
cyclopropyl{4-[(2-{[6-(5-methoxypyridazin-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (150 mg, 299 μmol) and 3-chloro-5-methoxypyridazine (115 mg, 796 μmol) Example 47.02 was prepared analogously to the procedure for the preparation of Example 08.01.

Yield: 16 mg (11% Yield) of the title compound.

LC-MS (Method 5): R_t=2.53 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.71 (m, 4H), 1.96 (m, 1H), 2.41 (m, 4H), 3.53 (m, 4H), 3.70 (s, 2H), 4.02 (s, 3H), 6.95 (d, 1H), 7.23 (s, 1H), 7.36-7.72 (m, 2H), 7.90 (d, 1H), 8.07-8.46 (m, 2H), 8.88 (d, 1H), 10.71 (s, 1H), 12.61 (s, 1H).

¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.9, 10.2, 41.6, 44.8, 52.4, 53.1, 60.6, 67.4, 110.5, 116.6, 141.5, 146.9, 149.5, 153.5, 158.2, 160.2, 170.9.

Example 48.01
cyclopropyl{4-[(2-{[6-(6-methoxypyrazin-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with cyclopropyl{4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (200 mg, 398 μmol) and 2-chloro-6-methoxypyrazine (70.0 mg, 484 μmol), Example 48.01 was prepared analogously to the procedure for the preparation of Example 08.01.

Yield: 117 mg (58%) of the title compound.

LC-MS (Method 5): R_t=2.84 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.70 (m, 4H), 1.94 (m, 1H), 2.40 (m, 4H), 3.52 (m, 4H), 3.69 (s, 2H), 4.04 (s, 3H), 6.95 (d, 1H), 7.22 (s, 1H), 7.34-7.45 (m, 1H), 7.87 (d, 1H), 8.16 (s, 1H), 8.27 (d, 1H), 8.77 (s, 1H), 10.71 (s, 1H), 12.27 (s, 1H).

¹³C-NMR (101 MHz, DMSO-d6): δ [ppm]=6.9, 10.2, 41.6, 44.8, 52.4, 53.1, 60.6, 110.5, 116.6, 132.5, 146.9, 149.47, 149.51, 153.5, 159.2, 170.9.

Example 49.01
cyclopropyl{4-[(2-{[6-(2-methoxypyridin-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of cyclopropyl{4-[(2-{[7-(2-methylpropoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone (160 mg, 278 μmol) in dioxane (5 mL) and water (0.5 mL) was added sodium bicarbonate (88.5 mg, 835 μmol), 4-bromo-2-methoxypyridine (78.5 mg, 418 μmol), and Pd(dppf)Cl₂. CH₂Cl₂(34.1 mg, 41.8 μmol). The mixture was heated to 120° C. in a sealed tube for 14 h. Ethyl acetate was added, the mixture was filtered through celite and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by silicagel chromatography gave a residue that was dissolved in dichloromethane and acidified with aqueous 2N hydrochloric acid. The organic phase was removed and saturated potassium carbonate solution was added to the aqueous phase until basic pH was reached. The aqueous phase was extracted with dichloromethane/methanol (10:1). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography followed by preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 35.0 mg (20% yield) of the title compound.

LC-MS (Method 2): R_t=1.35 min; MS (ESIpos): m/z=556 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.683 (3.26), 0.688 (2.16), 0.703 (4.05), 0.711 (3.89), 0.719 (3.35), 0.723 (3.77), 0.730 (1.84), 0.814 (1.49), 0.830 (3.28), 0.836 (1.82), 0.851 (16.00), 0.858 (6.12), 0.867 (15.82), 0.894 (1.28), 0.910 (1.21), 0.936 (1.65), 0.953 (1.68), 1.237 (2.80), 1.394 (0.74), 1.873 (0.96), 1.889 (1.16), 1.905 (0.96), 1.965 (1.40), 2.327 (1.44), 2.356 (1.68), 2.435 (1.79), 2.523 (4.01), 2.669 (1.12), 3.512 (6.15), 3.705 (1.58), 3.875 (12.99), 4.296 (4.71), 4.312 (4.54), 6.926 (3.31), 6.932 (2.02), 6.946 (1.89), 7.005 (2.54), 7.025 (2.68), 7.136 (1.65), 7.140 (1.66), 7.150 (1.65), 7.153 (1.72), 7.227 (2.84), 7.260 (2.84), 7.280 (2.31), 8.130 (2.26), 8.143 (2.16), 8.258 (2.23), 8.271 (2.09), 10.719 (2.72), 12.187 (2.40).

Example 50.01
3,3,3-trifluoro-1-{4-[(2-{[6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 171 μmol) and 3,3,3-trifluoropropanoic acid (23 μl, 98% purity, 260 μmol), Example 50.01 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 58.0 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=598 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.75 (d, 6H), 1.70-1.87 (m, 1H), 2.41 (br dd, 4H), 3.43-3.57 (m, 6H), 3.59-3.71 (m, 2H), 3.81 (s, 3H), 4.25 (d, 2H), 6.80 (d, 1H), 6.94 (d, 1H), 7.17-7.25 (m, 3H), 8.21 (d, 1H), 8.27 (d, 1H), 8.38 (s, 1H), 10.70 (s, 1H), 12.15 (s, 1H).

Example 50.02
cyclopropyl{4-[(2-{[6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 171 μmol) and cyclopropanecarboxylic acid (21 μl, 98% purity, 260 μmol), Example 50.02 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 62.0 mg of the title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=556 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.66-0.80 (m, 10H), 1.78 (dt, 1H), 1.90-2.03 (m, 1H), 2.32-2.48 (m, 4H), 3.52 (s, 4H), 3.71 (br s, 2H), 3.81 (s, 3H), 4.25 (d, 2H), 6.80 (d, 1H), 6.94 (br d, 1H), 7.21 (dt, 3H), 8.21 (d, 1H), 8.27 (d, 1H), 8.38 (s, 1H), 10.71 (s, 1H), 12.16 (s, 1H).

Example 50.03
cyclobutyl{4-[(2-{[6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(3-methoxypyridin-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (120 mg, approx. 171 μmol) and cyclobutanecarboxylic acid (25 μl, 98% purity, 260 μmol), Example 50.03 was prepared analogously to the procedure for the preparation of Example 05.01.

Yield: 88.0 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=570 [M+H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.75 (d, 6H), 1.67-1.81 (m, 2H), 1.82-1.96 (m, 1H), 1.99-2.22 (m, 4H), 2.35 (br d, 4H), 3.49 (s, 4H), 3.81 (s, 3H), 4.25 (d, 2H), 6.80 (d, 1H), 6.93 (d, 1H), 7.16-7.25 (m, 3H), 8.21 (d, 1H), 8.26 (d, 1H), 8.38 (s, 1H), 10.70 (s, 1H), 12.15 (s, 1H).

Example 51.01
1-{4-[(2-{[7-ethoxy-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 7-ethoxy-6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (250 mg, approx. 378 μmol) and 3,3,3-trifluoropropanoic acid (50 μl, 570 μmol), Example 51.01. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 100.0 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=570 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.131 (5.68), 1.149 (12.32), 1.154 (1.75), 1.167 (5.91), 1.172 (2.35), 1.190 (1.05), 1.986 (3.46), 2.366 (1.53), 2.378 (2.32), 2.390 (1.80), 2.408 (1.73), 2.420 (2.32), 2.432 (1.69), 2.522 (1.37), 3.456 (1.70), 3.469 (2.35), 3.480 (2.00), 3.492 (2.04), 3.513 (6.88), 3.604 (1.16), 3.631 (3.33), 3.659 (3.13), 3.686 (1.00), 3.820 (16.00), 4.018 (0.77), 4.036 (0.74), 4.533 (1.15), 4.550 (3.62), 4.568 (3.57), 4.585 (1.15), 5.755 (3.03), 6.792 (2.86), 6.812 (2.99), 6.915 (1.62), 6.919 (1.68), 6.929 (1.76), 6.932 (1.72), 7.180 (2.88), 7.192 (4.57), 7.213 (3.26), 7.233 (2.70), 8.206 (3.20), 8.218 (2.92), 8.257 (2.75), 8.270 (2.62), 8.384 (4.97), 10.689 (3.24), 12.132 (2.74).

Example 51.02
2-cyclopropyl-1-{4-[(2-{[7-ethoxy-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}ethanone

embedded image

Starting with crude 7-ethoxy-6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 302 μmol) and cyclopropylacetic acid (42 μl, 450 μmol), Example 51.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=542 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.000 (0.94), 0.011 (3.25), 0.014 (2.94), 0.023 (3.26), 0.026 (3.00), 0.037 (1.07), 0.330 (1.16), 0.339 (2.82), 0.344 (2.96), 0.350 (1.48), 0.354 (1.44), 0.360 (3.01), 0.364 (2.87), 0.375 (1.09), 0.854 (1.06), 1.047 (5.83), 1.064 (12.53), 1.071 (4.46), 1.082 (5.79), 1.089 (8.19), 1.107 (3.86), 1.905 (13.05), 2.153 (5.25), 2.170 (5.09), 2.273 (2.18), 2.293 (1.97), 2.306 (2.17), 3.368 (2.13), 3.380 (1.94), 3.413 (6.49), 3.738 (16.00), 3.916 (1.04), 3.935 (2.95), 3.952 (2.96), 3.970 (0.98), 4.449 (1.14), 4.467 (3.67), 4.485 (3.64), 4.503 (1.11), 6.707 (2.95), 6.728 (3.14), 6.832 (1.60), 6.835 (1.64), 6.845 (1.69), 6.848 (1.68), 7.097 (3.08), 7.109 (5.16), 7.131 (3.18), 7.151 (2.78), 8.124 (3.28), 8.135 (3.01), 8.172 (2.67), 8.185 (2.51), 8.301 (5.03), 10.620 (3.23), 12.056 (2.74).

Example 51.03
cyclopropyl{4-[(2-{[7-ethoxy-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 7-ethoxy-6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, approx. 227 μmol) and cyclopropanecarboxylic acid (28 μl, 95% purity, 340 μmol) Example 51.03. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=528 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.676 (1.50), 0.683 (3.35), 0.689 (2.09), 0.696 (1.72), 0.703 (4.06), 0.708 (3.54), 0.713 (3.68), 0.720 (3.43), 0.725 (3.98), 0.732 (1.83), 1.132 (5.83), 1.149 (12.24), 1.155 (2.06), 1.167 (6.01), 1.173 (2.60), 1.191 (1.16), 1.942 (0.80), 1.949 (0.87), 1.961 (1.47), 1.973 (0.87), 1.980 (0.86), 1.988 (4.23), 2.085 (4.51), 2.361 (1.58), 2.440 (1.62), 3.513 (6.33), 3.700 (1.46), 3.821 (16.00), 4.019 (0.95), 4.037 (0.95), 4.533 (0.99), 4.551 (2.93), 4.569 (2.89), 4.586 (0.97), 5.756 (5.66), 6.792 (2.10), 6.812 (2.27), 6.927 (1.82), 6.940 (1.87), 7.181 (2.34), 7.193 (2.98), 7.201 (3.06), 7.213 (2.81), 7.233 (2.22), 8.208 (2.63), 8.219 (2.57), 8.260 (2.94), 8.273 (2.77), 8.385 (4.23), 10.691 (2.87), 12.133 (2.64).

Example 51.04
cyclobutyl{4-[(2-{[7-ethoxy-6-(3-methoxypyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 7-ethoxy-6-(3-methoxypyridin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 302 μmol) and cyclobutanecarboxylic acid (43 μl, 450 μmol), Example 51.04 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=542 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.128 (5.83), 1.146 (12.86), 1.154 (3.59), 1.163 (6.14), 1.172 (6.76), 1.189 (3.34), 1.838 (0.69), 1.859 (1.33), 1.882 (1.02), 1.886 (0.99), 1.987 (11.56), 2.049 (1.46), 2.058 (1.08), 2.065 (1.05), 2.071 (1.67), 2.080 (1.29), 2.097 (1.03), 2.102 (0.92), 2.120 (1.90), 2.125 (1.26), 2.142 (2.06), 2.147 (1.66), 2.165 (0.95), 2.171 (1.07), 2.345 (4.13), 3.300 (1.17), 3.319 (3.19), 3.468 (2.22), 3.485 (6.10), 3.820 (16.00), 3.999 (0.93), 4.016 (2.55), 4.034 (2.47), 4.053 (0.79), 4.531 (1.16), 4.549 (3.63), 4.566 (3.56), 4.584 (1.12), 6.790 (2.87), 6.810 (3.00), 6.907 (1.65), 6.923 (1.78), 7.179 (4.15), 7.191 (3.45), 7.213 (3.17), 7.233 (2.70), 8.206 (3.18), 8.218 (3.04), 8.251 (2.77), 8.263 (2.63), 8.384 (5.09), 10.699 (3.23), 12.137 (2.81).

Example 52.01
1-{4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (248 mg, approx. 453 μmol) and 3,3,3-trifluoropropanoic acid (61 μl, 98% purity, 680 μmol), Example 52.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 24.0 mg of the title compound.

LC-MS (Method 2): R_t=1.26 min; MS (ESIpos): m/z=585 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=1.00 (d, 6H), 1.41 (t, 3H), 2.07 (dt, 1H), 2.35-2.45 (m, 4H), 3.44-3.57 (m, 6H), 3.66 (q, 2H), 3.78 (br d, 1H), 4.16 (q, 2H), 4.36 (d, 2H), 6.92 (d, 1H), 7.10-7.32 (m, 3H), 7.81 (s, 1H), 8.02 (s, 1H), 8.25 (d, 1H), 10.61 (s, 1H), 12.02 (s, 1H), 12.11-12.20 (m, 1H).

Example 52.02
cyclopropyl{4-[(2-{[6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(1-ethyl-1H-pyrazol-4-yl)-7-(2-methylpropoxy)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (248 mg, approx. 453 μmol) and cyclopropanecarboxylic acid (55 μl, 98% purity, 680 μmol), Example 52.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 49.0 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=543 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=0.65-0.78 (m, 4H), 1.00 (d, 6H), 1.37-1.45 (m, 3H), 1.92-2.13 (m, 2H), 2.32-2.47 (m, 4H), 3.51 (s, 4H), 3.71 (br s, 2H), 4.16 (q, 2H), 4.36 (d, 2H), 6.93 (d, 1H), 7.10-7.31 (m, 3H), 7.81 (s, 1H), 8.02 (s, 1H), 8.25 (d, 1H), 10.61 (s, 1H), 12.02 (s, 1H), 12.16 (br s, 1H).

Example 53.01
1-{4-[(2-{[7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 311 μmol) and 3,3,3-trifluoropropanoic acid (41 μl, 470 μmol) Example 53.01. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 7.0 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.006 (0.46), 1.232 (1.56), 1.347 (2.97), 1.365 (6.15), 1.383 (3.61), 1.389 (4.80), 1.407 (9.24), 1.425 (4.34), 2.318 (0.67), 2.323 (1.47), 2.327 (2.02), 2.331 (1.47), 2.337 (0.76), 2.376 (2.05), 2.387 (1.77), 2.403 (1.84), 2.416 (2.26), 2.518 (16.00), 2.523 (13.37), 2.529 (8.84), 2.540 (10.68), 2.660 (0.80), 2.665 (1.56), 2.669 (2.05), 2.674 (1.44), 2.678 (0.70), 3.308 (1.07), 3.455 (1.80), 3.468 (2.29), 3.479 (2.02), 3.507 (5.78), 3.610 (0.98), 3.628 (0.73), 3.637 (2.69), 3.655 (0.83), 3.664 (2.51), 3.692 (0.83), 4.135 (0.92), 4.153 (2.72), 4.171 (2.78), 4.189 (0.98), 4.543 (0.86), 4.560 (2.57), 4.578 (2.57), 4.595 (0.86), 6.903 (1.25), 6.919 (1.28), 7.159 (1.99), 7.164 (2.23), 7.179 (3.03), 7.196 (3.06), 7.217 (1.01), 7.837 (3.73), 8.059 (3.37), 8.223 (0.46), 8.239 (1.87), 8.252 (1.71), 10.678 (1.93), 12.039 (1.90).

Example 53.02
cyclopropyl{4-[(2-{[7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 7-ethoxy-6-(1-ethyl-1H-pyrazol-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, approx. 311 μmol) and cyclopropanecarboxylic acid (39 μl, 95% purity, 470 μmol) Example 53.02. was prepared analogously to the procedure for the preparation of Example 16.01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.682 (3.37), 0.702 (4.15), 0.706 (4.08), 0.711 (4.11), 0.723 (4.06), 1.348 (3.15), 1.366 (6.16), 1.389 (5.71), 1.407 (8.40), 1.425 (4.20), 1.950 (1.00), 1.962 (1.40), 1.973 (0.94), 1.980 (0.80), 2.356 (2.28), 3.334 (16.00), 3.699 (2.08), 4.135 (1.19), 4.153 (3.23), 4.172 (3.22), 4.189 (1.20), 4.544 (1.04), 4.562 (2.74), 4.579 (2.71), 4.597 (1.00), 6.910 (1.80), 6.924 (1.89), 7.171 (3.40), 7.181 (3.78), 7.197 (3.07), 7.218 (1.03), 7.839 (4.28), 8.060 (3.71), 8.240 (2.08), 8.253 (2.11), 10.682 (2.57), 12.043 (2.50).

Example 54.01
3,3,3-trifluoro-1-{4-[(2-{[7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (235 mg, approx. 457 μmol) and 3,3,3-trifluoropropanoic acid (120 μl, 1.4 mmol), Example 54.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 100 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=515 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.42 (s, 3H), 2.85 (s, 3H), 3.38 (br. s., 8H), 3.61-3.82 (m, 4H), 7.09 (d, 1H), 7.29 (br. s., 1H), 7.52 (d, 1H), 7.80 (d, 1H), 8.44 (d, 1H), 11.26 (br. s., 1H), 12.50 (br. s., 1H).

Example 54.02
cyclopropyl{4-[(2-{[7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 7-methyl-6-(3-methyl-1,2,4-oxadiazol-5-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (235 mg, approx. 457 μmol) and cyclopropanecarboxylic acid (110 μl, 1.4 mmol), Example 54.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 43 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=473 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.66-0.74 (m, 4H), 1.90-2.00 (m, 1H), 2.36 (br. s., 2H), 2.41 (s, 3H), 2.43 (br. s., 2H), 2.83 (s, 3H), 3.52 (br. s., 4H), 3.70 (br. s., 2H), 6.95 (d, 1H), 7.17 (br. s., 1H), 7.50 (d, 1H), 7.73 (d, 1H), 8.28 (d, 1H), 10.89 (br. s., 1H), 12.41 (br. s., 1H).

Example 55.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with crude 4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine (360 mg, 1.36 mmol) Compound 55.03, Example 55.01 was prepared analogously to the procedure for the preparation of Example 39.02.01.

Yield: 369 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=579 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.47-1.59 (m, 1H), 1.64-1.78 (m, 1H), 2.20-2.34 (m, 3H), 2.35-2.44 (m, 2H), 2.51-2.53 (m, 2H), 3.32 (br s, 2H), 3.44 (q, 1H), 4.16-4.33 (m, 2H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.24 (br s, 1H), 7.39-7.67 (m, 2H), 7.77-7.91 (m, 1H), 8.10 (br d, 1H), 8.25 (d, 1H), 10.56 (br s, 1H), 12.04 (br s, 1H).—contains ethanol.

Example 55.01.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine (160 mg, see Compound 55.03.01), Example 55.01.01 was prepared analogously to the procedure for the preparation of Example 39.02.01.

Yield: 74 mg of the 86% pure title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=579 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.48-1.59 (m, 1H), 1.64-1.77 (m, 1H), 2.25-2.44 (m, 5H), 3.24-3.32 (m, 4H), 3.43 (q, 1H), 4.17-4.36 (m, 2H), 6.92 (d, 1H), 7.16 (s, 1H), 7.18-7.48 (m, 2H), 7.50-7.68 (m, 1H), 7.85 (br d, 1H), 8.04-8.16 (m, 1H), 8.25 (d, 1H), 10.56 (br s, 1H), 12.03 (br s, 1H).

Example 55.01.02
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine (140 mg, see Compound 55.03.02), Example 55.01.02 was prepared analogously to the procedure for the preparation of Example 39.02.01.

Yield: 85 mg of the 88% pure title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=579 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.50-1.59 (m, 1H), 1.70 (tdd, 1H), 2.20-2.44 (m, 5H), 3.24-3.32 (m, 4H), 3.39-3.48 (m, 1H), 4.18-4.34 (m, 2H), 6.92 (d, 1H), 7.16 (s, 1H), 7.25 (br d, 1H), 7.32-7.45 (m, 1H), 7.58 (br s, 1H), 7.85 (s, 1H), 8.10 (s, 1H), 8.25 (d, 1H), 10.58 (br s, 1H), 12.06 (br s, 1H).

Example 55.02
1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride salt (210 mg, Compound 55.04), Example 55.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 127 mg of the 94% pure title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=590 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.39 (br s, 4H), 1.48-1.60 (m, 1H), 1.64-1.78 (m, 1H), 2.22-2.32 (m, 1H), 3.17-3.57 (m, 7H), 3.64 (q, 2H), 4.29 (br d, 2H), 7.18 (br d, 1H), 7.22 (s, 1H), 7.46-7.60 (m, 3H), 7.70 (s, 1H), 7.92 (s, 1H), 8.20 (s, 1H), 8.43 (br d, 1H), 8.54 (dd, 1H), 8.77 (dd, 1H).

Example 55.02.01
1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or IS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (45 mg, see Compound 55.04.01), Example 55.02.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 18 mg of the 92% pure title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=589 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 1.47-1.59 (m, 1H), 1.64-1.77 (m, 1H), 2.22-2.47 (m, 5H), 3.39-3.52 (m, 5H), 3.62 (q, 2H), 4.17-4.34 (m, 2H), 6.93 (d, 1H), 7.17 (s, 1H), 7.21-7.67 (m, 3H), 7.78-7.90 (m, 1H), 8.04-8.16 (m, 1H), 8.25 (d, 1H), 10.57 (br s, 1H), 12.04 (br d, 1H).

Example 55.02.02
1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or IS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (37 mg, see Compound 55.04.02), Example 55.02.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 19 mg of the 93% pure title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=589 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 1.48-1.59 (m, 1H), 1.70 (tdd, 1H), 2.23-2.47 (m, 5H), 3.39-3.53 (m, 5H), 3.62 (q, 2H), 4.14-4.34 (m, 2H), 6.93 (dd, 1H), 7.17 (s, 1H), 7.20-7.48 (m, 2H), 7.51-7.67 (m, 1H), 7.79-7.90 (m, 1H), 8.04-8.17 (m, 1H), 8.25 (d, 1H), 10.57 (br s, 1H), 12.04 (br d, 1H).

Example 55.03
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride salt (210 mg, Compound 55.04), Example 55.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 112 mg of the 94% pure title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=548 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.64-0.75 (m, 4H), 1.38 (br d, 2H), 1.45-1.60 (m, 1H), 1.71 (tdd, 1H), 1.87-2.01 (m, 1H), 2.21-2.32 (m, 1H), 3.13-3.87 (m, 9H), 4.20-4.36 (m, 2H), 7.12 (d, 1H), 7.22 (s, 1H), 7.40-7.56 (m, 3H), 7.66 (d, 1H), 7.90 (s, 1H), 8.17 (s, 1H), 8.38 (d, 1H), 8.54 (dd, 1H), 8.77 (dd, 1H).

Example 55.03.01
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (45 mg, see Compound 55.04.01), Example 55.03.01 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 19 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=547 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.61-0.75 (m, 4H), 1.28-1.33 (m, 3H), 1.53 (ddt, 1H), 1.65-1.78 (m, 1H), 1.89-1.97 (m, 1H), 2.20-2.45 (m, 5H), 3.40-3.53 (m, 3H), 3.60-3.75 (m, 2H), 4.19-4.34 (m, 2H), 6.94 (dd, 1H), 7.17 (s, 1H), 7.20-7.48 (m, 2H), 7.50-7.68 (m, 1H), 7.77-7.90 (m, 1H), 8.04-8.16 (m, 1H), 8.26 (d, 1H), 10.57 (br s, 1H), 12.03 (br s, 1H).

Example 55.03.02
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(1-{[(1R or 1S)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (37 mg, see Compound 55.04.02), Example 55.03.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 18 mg of the 93% pure title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=547 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.60-0.75 (m, 4H), 1.30 (d, 3H), 1.47-1.58 (m, 1H), 1.70 (tdd, 1H), 1.87-1.99 (m, 1H), 2.19-2.43 (m, 5H), 3.39-3.55 (m, 3H), 3.67 (br s, 2H), 4.17-4.36 (m, 2H), 6.94 (dd, 1H), 7.17 (s, 1H), 7.20-7.48 (m, 2H), 7.49-7.68 (m, 1H), 7.77-7.92 (m, 1H), 8.02-8.17 (m, 1H), 8.26 (d, 1H), 10.57 (br s, 1H), 12.04 (br d, 1H).

Example 56.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)benzene-1,2-diamine (350 mg, 1.44 mmol, Compound 56.03), Example 56.01 was prepared analogously to the procedure for the preparation of Example 39.02.01.

Yield: 188 mg of the 83% pure title compound.

LC-MS (Method 2): R_t=1.38 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.22-0.35 (m, 1H), 0.55 (dt, 1H), 0.77-0.89 (m, 1H), 0.94-1.00 (m, 1H), 0.99-1.05 (m, 3H), 1.28 (d, 3H), 1.38 (s, 9H), 2.24-2.34 (m, 2H), 2.34-2.44 (m, 2H), 3.32 (br s, 4H), 3.43 (q, 1H), 3.88-4.20 (m, 2H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.18-7.48 (m, 2H), 7.49-7.67 (m, 1H), 7.79 (br s, 1H), 8.08 (br s, 1H), 8.24 (d, 1H), 10.56 (br s, 1H), 12.02 (br s, 1H).

Example 56.02
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-(1-{[(1RS,2RS)-2-methylcyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride salt (310 mg, Compound 56.04), Example 56.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 101 mg of the 93% pure title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=568 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.26-0.35 (m, 1H), 0.55 (dt, 1H), 0.77-0.89 (m, 1H), 0.92-1.00 (m, 1H), 0.99-1.06 (m, 3H), 1.30 (d, 3H), 2.27-2.46 (m, 4H), 3.40-3.52 (m, 5H), 3.62 (q, 2H), 3.86-4.19 (m, 2H), 6.93 (dd, 1H), 7.17 (s, 1H), 7.20-7.47 (m, 2H), 7.49-7.67 (m, 1H), 7.78 (br d, 1H), 8.06 (br d, 1H), 8.25 (d, 1H), 10.56 (br s, 1H), 12.03 (br s, 1H).

Example 57.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (500 mg, 808 μmol) Compound 57.03 was solved in 13 mL THF and tetrabutylammonium fluoride (8.1 ml, 1.0 M, 8.1 mmol) was added. This mixture was stirred at 70° C. for 3 hours. The THF was removed under reduced pressure. The residue was diluted with ethyl acetate and water. The layers were separated and the aqueous layer was extracted with dichloromethane/isopropanol (7:3) twice. The combined organic layers were dried using a water resistant filter and the clear filtrate was concentrated under reduced pressure. The crude product was purified by flash chromatography. The residue was diluted with water. A beige solid precipitated. It was filtered off under vacuo. The filter cake was dried at 50° C. overnight.

Yield: 276 mg (64%) of the 91% pure title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=489 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.48-1.68 (m, 2H), 2.20-2.34 (m, 2H), 2.34-2.43 (m, 2H), 3.09-3.21 (m, 2H), 3.43 (q, 1H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.20-7.48 (m, 2H), 7.51-7.70 (m, 1H), 7.73-8.16 (m, 2H), 8.24 (d, 1H), 10.54 (br s, 1H), 12.02 (br s, 1H), 12.81 (br s, 1H)

Example 58.01.01
cyclobutyl(4-{[2-({6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg) and cyclobutanecarboxylic acid (36 μl, 360 μmol), Example 58.01.01 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 60 mg of the title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.036 (0.50), 1.053 (1.05), 1.071 (0.53), 1.708 (0.47), 1.722 (0.42), 1.732 (0.58), 1.837 (0.42), 1.858 (0.83), 1.882 (0.70), 1.908 (0.42), 2.049 (1.04), 2.058 (0.81), 2.074 (3.06), 2.099 (0.75), 2.121 (1.30), 2.143 (1.40), 2.167 (0.70), 2.172 (0.75), 2.346 (3.31), 3.297 (0.83), 3.320 (2.36), 3.334 (16.00), 3.436 (0.41), 3.441 (0.46), 3.471 (1.81), 3.487 (4.84), 5.133 (0.95), 5.155 (0.95), 5.758 (0.87), 6.903 (1.34), 6.917 (1.36), 7.180 (1.86), 7.271 (0.49), 8.241 (1.99), 8.254 (1.89), 10.599 (1.21), 12.056 (1.14).

Example 58.01.02
3,3,3-trifluoro-1-(4-{[2-({6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg) and 3,3,3-trifluoropropanoic acid (32 μl, 360 μmol), Example 58.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIneg): m/z=565 [M−H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 2.368 (3.26), 2.380 (4.90), 2.392 (3.68), 2.409 (3.28), 2.421 (4.57), 2.432 (3.52), 2.461 (1.23), 2.465 (1.31), 2.470 (1.18), 2.518 (4.12), 2.523 (2.80), 3.382 (0.42), 3.457 (3.28), 3.471 (4.53), 3.482 (3.96), 3.494 (3.96), 3.517 (16.00), 3.609 (2.28), 3.637 (6.68), 3.664 (6.22), 3.692 (1.90), 4.047 (1.86), 5.135 (2.15), 5.155 (2.15), 6.913 (4.05), 6.916 (3.85), 6.926 (4.03), 6.929 (3.90), 7.189 (4.18), 7.266 (1.12), 7.323 (0.72), 7.449 (0.66), 7.565 (0.92), 7.659 (0.77), 7.943 (0.88), 8.001 (0.98), 8.146 (0.94), 8.195 (1.03), 8.248 (6.52), 8.262 (6.15), 10.601 (3.15), 12.055 (3.92).

Example 58.01.03
cyclopropyl(4-{[2-({6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg) and cyclopropanecarboxylic acid (30 μl, 360 μmol), Example 58.01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=524 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.675 (0.67), 0.682 (1.52), 0.687 (0.95), 0.694 (0.75), 0.701 (1.83), 0.707 (1.47), 0.712 (1.61), 0.720 (1.53), 0.724 (1.84), 0.731 (0.85), 1.962 (0.67), 2.074 (0.70), 2.359 (0.74), 2.441 (0.76), 2.518 (0.75), 2.522 (0.51), 3.333 (16.00), 3.701 (0.70), 5.133 (0.63), 5.154 (0.62), 6.919 (0.96), 6.922 (0.95), 6.932 (0.96), 6.935 (0.98), 7.194 (1.32), 8.250 (1.54), 8.263 (1.46), 10.606 (0.78), 12.060 (0.73).

Example 59.01.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (Single Stereoisomer A)

embedded image

To a stirred solution of 1H-imidazole (24.4 mg, 359 μmol) and di-1H-imidazol-1-ylmethanethione (427 mg, 90% purity, 2.15 mmol) in dichloromethane (5 mL) was added tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (Single Stereoisomer A) (Compound 36.05) (550 mg, 1.79 mmol), dissolved in dichloromethane (10 mL) at r.t. The mixture was stirred at r.t. for 14 h. 4-[1-(Cyclobutylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (538 mg, 2.15 mmol, Compound 59.03), dissolved in dichloromethane (10 mL) was added and the mixture was stirred at r.t. for 14 h. Silicagel chromatography of the crude reaction mixture gave 1.80 g of a solid that was dissolved in dichloromethane (22 mL). EDC (385 mg, 2.01 mmol) was added and the mixture was stirred for 62 h. Further EDC (385 mg, 2.01 mmol) was added and the mixture was stirred for 4 h. Dichloromethane and methanol (10:1 mixture) and water were added, the mixture was stirred for 30 minutes. Saturated ammonium chloride solution was added and the mixture was extracted with dichloromethane. Aminophase-silicagel chromatography followed by silicagel chromatography gave 680 mg of the title compound.

LC-MS (Method 2): R_t=1.40 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.273 (1.79), 1.290 (1.76), 1.376 (16.00), 1.793 (0.43), 1.811 (0.67), 1.822 (0.74), 1.826 (0.69), 1.831 (0.80), 1.840 (0.47), 1.991 (0.50), 2.000 (0.45), 2.004 (0.40), 2.012 (0.46), 2.292 (0.42), 2.305 (0.50), 2.378 (0.50), 2.390 (0.44), 2.518 (0.84), 2.523 (0.57), 3.421 (0.46), 3.437 (0.45), 4.120 (0.81), 4.138 (0.79), 6.908 (0.56), 6.911 (0.57), 6.922 (0.57), 6.924 (0.57), 7.155 (0.85), 8.237 (0.95), 8.250 (0.89).

Example 59.01.02
1-(4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one (Single Stereoisomer A)

embedded image

Starting with crude 6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (150 mg, Compound 59.04) and 3,3,3-trifluoropropanoic acid (22 μl, 240 μmol), Example 59.01.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 35.0 mg of the title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=567 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.070 (0.67), 1.087 (1.34), 1.105 (0.71), 1.230 (0.78), 1.287 (15.71), 1.303 (16.00), 1.353 (0.80), 1.771 (2.90), 1.791 (4.72), 1.811 (7.62), 1.822 (8.44), 1.831 (8.92), 1.858 (4.62), 1.880 (2.75), 1.897 (1.18), 1.969 (2.58), 1.983 (4.09), 1.991 (5.21), 1.999 (5.33), 2.012 (5.19), 2.326 (4.98), 2.336 (5.27), 2.423 (5.94), 2.668 (1.34), 2.741 (1.20), 2.758 (2.56), 2.777 (3.32), 2.795 (2.71), 2.815 (1.26), 3.144 (0.40), 3.370 (1.47), 3.388 (1.41), 3.434 (10.48), 3.452 (8.21), 3.470 (10.58), 3.578 (3.07), 3.605 (8.29), 3.632 (7.96), 3.660 (2.79), 4.120 (11.04), 4.138 (10.84), 6.920 (5.71), 6.934 (5.90), 7.167 (9.07), 7.226 (3.00), 7.245 (3.89), 7.372 (1.34), 7.566 (1.93), 7.776 (4.87), 8.037 (4.16), 8.246 (7.48), 8.260 (7.24), 10.570 (3.93), 12.030 (3.21).

Example 59.01.03
(4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)(cyclopropyl)methanone (Single Stereoisomer A)

embedded image

Starting with crude 6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (single stereoisomer A) (150 mg, Compound 59.04) and cyclopropanecarboxylic acid (20 μl, 240 μmol), Example 59.01.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.661 (8.93), 0.689 (11.46), 0.700 (11.20), 0.768 (0.88), 0.849 (0.68), 1.006 (0.43), 1.070 (3.51), 1.087 (6.63), 1.105 (3.67), 1.178 (1.68), 1.232 (2.87), 1.288 (15.91), 1.304 (16.00), 1.770 (2.99), 1.791 (4.82), 1.810 (7.73), 1.829 (8.97), 1.857 (4.72), 1.878 (2.86), 1.898 (2.27), 1.918 (3.12), 1.930 (4.02), 1.967 (2.98), 1.982 (4.24), 1.990 (5.35), 1.998 (5.46), 2.010 (5.26), 2.324 (2.74), 2.389 (4.27), 2.670 (0.95), 2.739 (1.16), 2.758 (2.54), 2.776 (3.26), 2.795 (2.66), 2.814 (1.23), 3.144 (0.41), 3.370 (3.87), 3.387 (3.66), 3.405 (1.96), 3.433 (5.55), 3.450 (7.55), 3.466 (6.74), 3.666 (5.60), 4.119 (9.58), 4.137 (9.41), 6.926 (5.82), 6.939 (5.94), 7.176 (9.15), 7.241 (2.87), 7.297 (1.03), 7.413 (1.05), 7.533 (1.32), 7.607 (1.11), 7.778 (2.55), 8.037 (2.08), 8.246 (7.18), 8.260 (6.82), 10.573 (3.64), 12.031 (3.43).

Example 59.02.01
1-(4-{[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (125 mg Compound 59.06) and 3,3,3-trifluoropropanoic acid (24 μl, 260 μmol), Example 59.02.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=553 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.753 (0.47), 1.772 (1.89), 1.793 (3.00), 1.811 (4.58), 1.819 (3.81), 1.822 (5.20), 1.826 (4.74), 1.831 (5.51), 1.840 (3.21), 1.849 (2.15), 1.859 (2.64), 1.874 (1.22), 1.881 (1.73), 1.898 (0.67), 1.969 (1.71), 1.983 (2.59), 1.991 (3.44), 2.000 (3.00), 2.004 (2.74), 2.012 (3.21), 2.030 (1.32), 2.336 (0.62), 2.365 (3.34), 2.378 (4.94), 2.390 (3.73), 2.406 (3.60), 2.419 (4.89), 2.430 (3.68), 2.518 (6.42), 2.522 (4.27), 2.539 (0.60), 2.740 (0.78), 2.759 (1.71), 2.777 (2.20), 2.796 (1.84), 2.815 (0.80), 3.456 (3.55), 3.469 (4.76), 3.481 (4.04), 3.513 (16.00), 3.608 (2.36), 3.636 (6.76), 3.663 (6.34), 3.690 (1.97), 4.046 (0.54), 4.120 (5.46), 4.139 (5.28), 6.906 (3.99), 6.908 (3.86), 6.919 (4.01), 6.922 (3.94), 7.187 (4.58), 7.234 (1.22), 7.293 (0.67), 7.414 (0.80), 7.522 (0.96), 7.615 (0.78), 7.752 (0.98), 7.800 (1.11), 8.013 (0.93), 8.060 (1.06), 8.241 (6.45), 8.255 (6.06), 10.571 (1.99), 12.010 (2.77).

Example 59.02.02
(4-{[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

Starting with crude 6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (125 mg, Compound 59.06) and cyclopropanecarboxylic acid (22 μl, 260 μmol), Example 59.02.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=511 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.663 (1.08), 0.675 (3.17), 0.682 (7.25), 0.688 (4.33), 0.695 (3.51), 0.702 (8.75), 0.707 (7.13), 0.712 (7.52), 0.719 (7.03), 0.724 (8.45), 0.731 (3.81), 0.743 (0.93), 1.752 (0.49), 1.772 (2.02), 1.792 (3.22), 1.798 (1.99), 1.811 (4.94), 1.818 (4.01), 1.822 (5.70), 1.826 (5.24), 1.831 (6.05), 1.840 (3.47), 1.849 (2.26), 1.859 (2.85), 1.874 (1.33), 1.881 (1.89), 1.898 (0.76), 1.931 (0.93), 1.944 (1.94), 1.951 (2.02), 1.955 (1.67), 1.963 (4.13), 1.969 (3.12), 1.983 (4.25), 1.991 (3.96), 1.996 (3.22), 2.000 (3.32), 2.004 (2.92), 2.012 (3.49), 2.030 (1.40), 2.322 (1.40), 2.326 (1.89), 2.331 (1.72), 2.361 (3.29), 2.442 (3.59), 2.518 (5.73), 2.522 (3.96), 2.539 (0.91), 2.659 (0.54), 2.664 (1.08), 2.668 (1.45), 2.673 (1.03), 2.678 (0.47), 2.740 (0.79), 2.759 (1.82), 2.777 (2.33), 2.796 (1.99), 2.815 (0.91), 3.513 (16.00), 3.701 (3.07), 4.120 (10.37), 4.138 (10.10), 6.912 (4.45), 6.914 (4.28), 6.925 (4.40), 6.927 (4.37), 7.221 (3.32), 7.238 (3.96), 7.363 (1.11), 7.571 (1.89), 7.774 (5.46), 8.036 (4.60), 8.239 (6.69), 8.252 (6.32).

Example 60.01
1-{4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-(6-chloro-5-methoxypyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (150 mg, Compound 60.02) and 3,3,3-trifluoropropanoic acid (82 μl, 920 μmol), Example 60.01 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 12.2 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=561 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ[ppm]: 2.354 (0.60), 2.358 (1.33), 2.361 (1.91), 2.365 (1.73), 2.375 (4.08), 2.385 (6.04), 2.395 (4.26), 2.417 (4.05), 2.427 (5.80), 2.436 (4.31), 2.515 (5.86), 2.518 (5.57), 2.522 (4.29), 2.540 (1.41), 2.631 (1.05), 2.635 (1.57), 2.639 (1.20), 3.464 (4.16), 3.474 (5.54), 3.484 (4.29), 3.500 (4.21), 3.510 (5.33), 3.519 (4.89), 3.531 (16.00), 3.619 (2.64), 3.642 (7.35), 3.663 (7.08), 3.685 (3.24), 3.694 (3.01), 3.737 (8.08), 4.024 (3.74), 4.048 (1.65), 6.954 (2.85), 6.964 (2.67), 7.187 (5.12), 7.446 (1.28), 7.462 (1.39), 7.958 (1.28), 7.975 (1.15), 8.117 (0.84), 8.284 (4.63), 8.294 (4.37), 8.410 (2.17), 8.795 (3.40), 10.836 (1.12), 12.329 (0.92), 12.368 (2.12).

Example 61.01.01
3,3,3-trifluoro-1-{4-[(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(5-methoxy-6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (90.0 mg, Compound 61.02) and 3,3,3-trifluoropropanoic acid (24 μl, 270 μmol), Example 61.01.01 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIneg): m/z=539 [M−H]⁻.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.394 (16.00), 2.373 (0.58), 2.385 (0.87), 2.397 (0.64), 2.415 (0.64), 2.427 (0.86), 2.513 (8.64), 2.523 (0.80), 3.462 (0.64), 3.474 (0.86), 3.486 (0.71), 3.498 (0.70), 3.512 (0.89), 3.528 (2.45), 3.556 (0.56), 3.587 (1.11), 3.611 (0.45), 3.638 (1.15), 3.666 (1.08), 5.759 (1.93), 6.941 (0.58), 6.954 (0.58), 7.188 (1.06), 8.274 (1.06), 8.287 (1.00), 8.800 (1.09).

Example 61.01.02
cyclopropyl{4-[(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(5-methoxy-6-methylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (51.5 mg, Compound 61.02) and cyclopropanecarboxylic acid (28 μl, 360 μmol), Example 61.01.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 16.0 mg of the title compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.678 (0.74), 0.686 (1.72), 0.691 (1.06), 0.698 (0.84), 0.705 (2.05), 0.710 (1.71), 0.714 (1.80), 0.722 (1.64), 0.726 (1.90), 0.733 (0.84), 1.232 (1.03), 1.969 (0.74), 2.366 (0.77), 2.434 (0.81), 2.451 (1.12), 2.514 (16.00), 2.518 (4.36), 2.523 (2.64), 2.674 (0.62), 3.159 (3.61), 3.172 (3.99), 3.528 (3.48), 3.551 (1.05), 3.589 (1.84), 3.711 (0.72), 4.096 (0.83), 4.110 (0.80), 6.949 (0.77), 6.963 (0.77), 7.196 (1.22), 8.276 (1.55), 8.289 (1.43), 8.799 (1.36).

Example 62.01.01
tert-butyl 4-{[2-({6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of cyclopropylmethanol (1000 μl, 12 mmol) in NMP (1 mL) was added sodium hydride (55% w/w in oil; 33.5 mg, 768 μmol) at r.t. and the mixture was stirred for 10 minutes. Tert-butyl 4-[(2-{[6-(2-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (100 mg, 192 μmol) was added and the mixture was stirred at 80° C. for 1 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum.

Silicagel chromatography followed by aminophase-silicagel chromatography gave a solid that was triturated with ethanol to give 70.0 mg of the title compound.

LC-MS (Method 2): R_t=1.39 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.385 (0.84), 0.397 (0.81), 0.401 (0.80), 1.395 (16.00), 2.359 (1.29), 2.371 (0.92), 3.331 (9.28), 3.351 (1.01), 8.537 (1.31), 8.551 (1.20).

Example 62.01.02
cyclobutyl(4-{[2-({6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude 6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, Compound 62.02) and cyclobutanecarboxylic acid (37 μl, 370 μmol), Example 62.01.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.23 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.374 (2.07), 0.385 (8.20), 0.389 (7.07), 0.396 (7.67), 0.401 (7.39), 0.411 (2.77), 0.570 (1.98), 0.580 (5.44), 0.585 (5.50), 0.590 (3.27), 0.601 (6.10), 0.605 (5.38), 0.617 (1.89), 1.035 (0.88), 1.052 (2.01), 1.070 (0.88), 1.291 (0.60), 1.297 (0.88), 1.309 (1.67), 1.317 (1.54), 1.329 (2.45), 1.341 (1.57), 1.348 (1.60), 1.361 (0.85), 1.684 (0.60), 1.702 (0.94), 1.710 (1.70), 1.720 (1.48), 1.723 (1.51), 1.734 (2.14), 1.744 (1.26), 1.756 (0.97), 1.767 (0.53), 1.816 (0.44), 1.839 (1.79), 1.860 (3.49), 1.866 (1.51), 1.883 (2.67), 1.888 (2.55), 1.905 (1.32), 1.910 (1.60), 1.931 (0.69), 2.022 (0.97), 2.031 (1.10), 2.036 (1.07), 2.051 (3.87), 2.061 (2.80), 2.067 (2.80), 2.073 (4.43), 2.082 (3.33), 2.088 (1.54), 2.100 (2.55), 2.123 (5.06), 2.128 (3.36), 2.144 (5.53), 2.149 (4.18), 2.152 (3.68), 2.168 (2.51), 2.173 (2.80), 2.191 (0.63), 2.197 (0.85), 2.318 (1.07), 2.322 (2.01), 2.326 (2.95), 2.332 (3.61), 2.352 (11.10), 2.518 (7.23), 2.522 (5.06), 2.660 (0.72), 2.664 (1.41), 2.668 (1.89), 2.673 (1.35), 2.678 (0.63), 3.279 (0.82), 3.303 (3.27), 3.344 (7.92), 3.366 (1.26), 3.422 (0.63), 3.435 (0.79), 3.439 (0.88), 3.452 (1.89), 3.474 (5.50), 3.502 (16.00), 4.240 (5.06), 4.257 (4.31), 4.343 (0.85), 4.355 (0.97), 6.942 (3.21), 7.188 (6.54), 7.412 (1.29), 7.433 (1.38), 7.580 (2.23), 7.593 (2.11), 7.686 (0.94), 7.917 (2.39), 7.939 (2.14), 8.191 (1.38), 8.274 (3.36), 8.391 (2.23), 8.538 (13.86), 8.551 (12.23), 10.729 (0.88), 10.801 (1.38), 12.293 (1.70), 12.323 (2.51).

Example 62.01.03
1-(4-{[2-({6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, Compound 62.02) and 3,3,3-trifluoropropanoic acid (33 μl, 370 μmol), Example 62.01.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 65.0 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=567 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.374 (1.95), 0.384 (7.72), 0.389 (6.82), 0.396 (7.43), 0.401 (7.15), 0.410 (2.62), 0.570 (2.00), 0.580 (5.48), 0.585 (5.45), 0.590 (3.05), 0.596 (3.35), 0.601 (5.99), 0.605 (5.45), 0.616 (1.79), 1.035 (0.43), 1.053 (0.77), 1.070 (0.44), 1.291 (0.58), 1.297 (0.85), 1.309 (1.60), 1.317 (1.49), 1.321 (1.20), 1.329 (2.50), 1.337 (1.22), 1.341 (1.46), 1.349 (1.52), 1.361 (0.81), 2.323 (0.62), 2.327 (0.87), 2.332 (0.66), 2.370 (3.83), 2.383 (5.79), 2.396 (4.35), 2.412 (4.20), 2.424 (5.62), 2.436 (4.14), 2.518 (2.66), 2.523 (2.02), 2.665 (0.55), 2.669 (0.79), 2.673 (0.52), 3.460 (4.19), 3.473 (5.67), 3.484 (4.58), 3.497 (4.46), 3.510 (5.70), 3.528 (16.00), 3.610 (2.90), 3.637 (8.21), 3.665 (7.78), 3.693 (2.46), 4.239 (5.05), 4.256 (4.70), 4.357 (0.52), 6.949 (3.16), 6.961 (2.93), 7.198 (7.60), 7.416 (1.05), 7.438 (1.12), 7.584 (1.79), 7.687 (0.75), 7.918 (2.69), 7.939 (2.35), 8.193 (0.99), 8.278 (3.60), 8.291 (3.36), 8.393 (1.73), 8.538 (13.90), 8.551 (12.12), 10.801 (1.05), 12.300 (1.54), 12.325 (2.19).

Example 62.01.04
cyclopropyl(4-{[2-({6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude 6-[2-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, Compound 62.02) and cyclopropanecarboxylic acid (31 μl, 370 μmol), Example 62.01.04 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 65.0 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.375 (1.91), 0.386 (7.71), 0.389 (6.73), 0.398 (7.42), 0.401 (7.36), 0.411 (2.71), 0.571 (1.79), 0.581 (5.05), 0.585 (5.23), 0.591 (3.00), 0.601 (5.72), 0.606 (5.23), 0.617 (1.70), 0.665 (1.10), 0.677 (3.21), 0.684 (7.86), 0.690 (4.79), 0.697 (3.67), 0.704 (9.44), 0.709 (7.88), 0.713 (8.43), 0.721 (7.83), 0.726 (9.27), 0.733 (4.16), 0.745 (1.01), 1.292 (0.55), 1.297 (0.81), 1.311 (1.56), 1.318 (1.44), 1.330 (2.43), 1.342 (1.44), 1.349 (1.47), 1.361 (0.81), 1.368 (0.49), 1.934 (0.87), 1.946 (1.85), 1.953 (2.02), 1.966 (3.41), 1.972 (1.56), 1.978 (1.91), 1.985 (1.76), 1.997 (0.78), 2.318 (0.66), 2.322 (1.36), 2.327 (2.02), 2.332 (1.65), 2.337 (1.21), 2.363 (3.52), 2.449 (4.30), 2.454 (4.30), 2.459 (3.61), 2.463 (2.77), 2.518 (6.56), 2.523 (4.62), 2.660 (0.55), 2.665 (1.21), 2.669 (1.76), 2.673 (1.24), 2.678 (0.55), 3.286 (0.72), 3.499 (3.52), 3.528 (16.00), 3.707 (3.35), 4.241 (4.79), 4.258 (4.16), 6.958 (2.92), 7.204 (6.24), 7.416 (1.24), 7.437 (1.30), 7.582 (2.05), 7.595 (1.94), 7.698 (0.84), 7.919 (2.34), 7.941 (2.02), 8.193 (1.21), 8.283 (3.15), 8.293 (2.86), 8.392 (2.08), 8.539 (12.51), 8.552 (11.44), 10.745 (0.81), 10.806 (1.36), 12.298 (1.59), 12.328 (2.40).

Example 63.01.01
tert-butyl 4-[(2-{[6-(2-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (2.50 g, 4.68 mmol, Compound 01.04) in 1-propanol (75 ml) was added a sodium carbonate solution (7.0 ml, 2.0 M, 14 mmol), 2,4-dichloro-5-methoxypyrimidine (2.59 g, 14.0 mmol), triphenylphosphine (123 mg, 468 μmol) and PdCl₂(PPh₃)₂(382 mg, 468 μmol). The mixture was heated to 110° C. in a sealed tube for 14 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with cyclopentylmethylether to give 900 mg (35% yield) of the title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=551 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.066 (1.06), 1.298 (1.65), 1.394 (16.00), 2.344 (0.87), 2.357 (1.21), 2.369 (0.81), 3.333 (4.46), 3.349 (0.97), 4.039 (2.24), 8.262 (0.67), 8.275 (0.62), 8.576 (0.71).

Example 64.01.01
tert-butyl 4-{[2-({6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of cyclopropylmethanol (500 μl, 6.3 mmol) in N-methylpyrrolidone (1 mL) was added sodium hydride (55% w/w in oil; 31.7 mg, 726 μmol) at r.t. and the mixture was stirred for 10 minutes. tert-Butyl 4-[(2-{[6-(2-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (100 mg, 181 μmol) was added and the mixture was stirred at 80° C. for 1 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with ethanol to give 65.0 mg of the title compound.

LC-MS (Method 2): R_t=1.37 min; MS (ESIpos): m/z=587 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.356 (0.91), 0.360 (0.78), 0.368 (0.87), 0.371 (0.82), 0.560 (0.71), 0.564 (0.71), 0.580 (0.74), 0.584 (0.67), 1.395 (16.00), 2.347 (0.92), 2.359 (1.33), 2.371 (0.94), 2.518 (0.57), 2.522 (0.41), 3.330 (10.26), 3.351 (1.05), 3.928 (2.47), 4.149 (1.02), 4.166 (0.99), 6.928 (0.42), 6.941 (0.41), 8.264 (0.52), 8.277 (0.49), 8.418 (1.69).

Example 64.01.02
cyclopropyl(4-{[2-({6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with crude 6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, Compound 64.01) and cyclopropanecarboxylic acid (23 μl, 280 μmol), Example 64.01.02 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 65.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.346 (1.69), 0.357 (6.65), 0.361 (5.76), 0.369 (6.38), 0.372 (6.31), 0.382 (2.24), 0.551 (1.96), 0.561 (5.24), 0.565 (5.27), 0.571 (2.57), 0.581 (5.52), 0.585 (5.06), 0.596 (1.59), 0.665 (0.98), 0.677 (2.91), 0.685 (6.93), 0.690 (4.14), 0.698 (3.16), 0.705 (8.31), 0.709 (6.87), 0.714 (7.26), 0.721 (6.74), 0.726 (8.03), 0.733 (3.59), 0.746 (0.89), 0.983 (0.43), 1.002 (0.98), 1.020 (0.52), 1.230 (0.61), 1.259 (0.58), 1.265 (0.83), 1.277 (1.47), 1.285 (1.38), 1.297 (2.39), 1.309 (1.29), 1.317 (1.38), 1.329 (0.70), 1.335 (0.46), 1.935 (0.80), 1.947 (1.69), 1.954 (1.72), 1.967 (3.00), 1.979 (1.66), 1.986 (1.53), 1.998 (0.70), 2.323 (1.47), 2.327 (2.05), 2.332 (1.59), 2.337 (1.10), 2.366 (2.97), 2.449 (3.16), 2.518 (6.68), 2.523 (4.87), 2.540 (2.27), 2.660 (0.58), 2.665 (1.32), 2.669 (1.84), 2.673 (1.26), 2.679 (0.55), 3.501 (3.00), 3.526 (14.53), 3.710 (2.85), 3.897 (0.58), 3.930 (16.00), 4.150 (6.93), 4.168 (6.80), 4.274 (0.49), 6.948 (3.03), 6.960 (3.00), 7.191 (2.30), 7.388 (1.01), 7.409 (1.10), 7.550 (0.49), 7.866 (0.52), 7.951 (1.07), 7.972 (0.95), 8.130 (0.70), 8.275 (3.71), 8.288 (3.56), 8.400 (1.78), 8.419 (12.81), 10.681 (0.43), 10.767 (0.98), 12.250 (0.89), 12.290 (1.87).

Example 64.01.03
1-(4-{[2-({6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-[2-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, Compound 64.01) and 3,3,3-trifluoropropanoic acid (25 μl, 280 μmol), Example 64.01.03 was prepared analogously to the procedure for the preparation of Example 01.02.

Yield: 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=597 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.346 (1.60), 0.356 (6.61), 0.360 (5.71), 0.368 (6.29), 0.372 (6.16), 0.382 (2.27), 0.551 (1.92), 0.561 (5.07), 0.565 (5.20), 0.570 (2.61), 0.577 (2.53), 0.581 (5.39), 0.585 (4.96), 0.596 (1.63), 0.983 (0.40), 1.001 (0.99), 1.019 (0.48), 1.027 (0.56), 1.042 (0.40), 1.259 (0.56), 1.265 (0.77), 1.277 (1.39), 1.285 (1.33), 1.297 (2.43), 1.304 (0.99), 1.309 (1.25), 1.316 (1.36), 1.328 (0.67), 1.335 (0.48), 2.337 (0.40), 2.372 (3.17), 2.384 (4.80), 2.396 (3.60), 2.413 (3.23), 2.425 (4.61), 2.437 (3.55), 2.518 (4.48), 2.523 (3.33), 3.144 (1.20), 3.159 (0.83), 3.173 (0.83), 3.319 (0.85), 3.349 (0.85), 3.360 (0.48), 3.370 (0.64), 3.384 (0.48), 3.460 (3.17), 3.473 (4.37), 3.484 (3.81), 3.497 (3.76), 3.510 (4.67), 3.527 (14.24), 3.565 (0.56), 3.610 (2.21), 3.637 (6.37), 3.665 (6.05), 3.693 (1.89), 3.896 (0.61), 3.905 (0.61), 3.929 (16.00), 4.048 (2.16), 4.149 (6.83), 4.167 (6.64), 4.273 (0.43), 6.940 (3.01), 6.953 (2.93), 7.188 (2.69), 7.388 (0.99), 7.408 (1.07), 7.549 (0.45), 7.866 (0.45), 7.953 (1.04), 7.974 (0.91), 8.130 (0.69), 8.273 (3.84), 8.286 (3.73), 8.399 (1.71), 8.419 (13.23), 10.684 (0.45), 10.763 (1.07), 12.247 (1.01), 12.284 (1.97).

Example 65.01.01
tert-butyl 4-{[2-({6-[6-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of cyclopropylmethanol (290 μl, 3.7 mmol) in N-methylpyrrolidone NMP (1 mL) was added sodium hydride (55% w/w in oil; 108 mg, 2.47 mmol) at r.t. and the mixture was stirred for 10 minutes. tert-Butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (340 mg, 617 μmol) dissolved in NMP (1 mL), was added and the mixture was stirred at 80° C. for 1 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave a solid that was triturated with ethanol to give 160 mg of the title compound.

LC-MS (Method 2): R_t=1.43 min; MS (ESIpos): m/z=587 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.399 (0.84), 0.403 (0.72), 0.411 (0.79), 0.415 (0.78), 0.591 (0.70), 0.596 (0.71), 0.611 (0.74), 0.616 (0.67), 1.396 (16.00), 2.349 (0.80), 2.361 (1.18), 2.373 (0.83), 2.518 (0.66), 2.523 (0.47), 3.352 (0.92), 3.502 (1.56), 3.789 (0.86), 4.278 (1.56), 4.296 (1.56), 6.938 (0.40), 8.266 (0.55), 8.279 (0.52), 8.505 (1.37).

Example 65.01.02
1-(4-{[2-({6-[6-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with crude 6-[6-(cyclopropylmethoxy)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, Compound 65.01) and 3,3,3-trifluoropropanoic acid (68 μl, 770 μmol), Example 65.01.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 6.00 mg of the title compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=597 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.389 (1.68), 0.399 (6.85), 0.403 (6.01), 0.411 (6.57), 0.415 (6.36), 0.425 (2.17), 0.582 (2.10), 0.592 (5.80), 0.597 (5.66), 0.602 (2.93), 0.612 (6.08), 0.617 (5.45), 0.628 (1.75), 1.232 (0.84), 1.305 (0.63), 1.311 (0.84), 1.323 (1.54), 1.331 (1.40), 1.343 (2.31), 1.355 (1.40), 1.363 (1.47), 1.375 (0.70), 1.382 (0.49), 1.955 (0.49), 2.332 (2.93), 2.336 (1.40), 2.385 (6.01), 2.397 (4.68), 2.415 (4.33), 2.427 (5.80), 2.438 (4.40), 2.518 (16.00), 2.522 (10.76), 2.673 (2.93), 2.678 (1.33), 2.897 (0.56), 2.941 (0.56), 3.461 (4.33), 3.474 (5.66), 3.485 (4.68), 3.513 (6.85), 3.527 (16.00), 3.611 (2.79), 3.638 (7.76), 3.666 (7.34), 3.693 (2.38), 3.762 (4.82), 3.793 (10.41), 3.829 (0.91), 3.847 (0.77), 4.025 (0.98), 4.279 (12.44), 4.297 (12.51), 6.937 (3.70), 6.949 (3.63), 7.189 (4.68), 7.394 (1.61), 7.416 (1.75), 7.552 (0.77), 7.572 (0.84), 7.773 (0.84), 7.794 (0.70), 7.881 (1.54), 7.903 (1.33), 8.052 (1.26), 8.274 (4.54), 8.287 (4.26), 8.318 (2.45), 8.505 (7.97), 10.680 (0.98), 10.742 (1.96), 12.229 (1.40), 12.271 (2.72).

Example 66.01.01
tert-butyl 4-[(2-{[6-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, 936 μmol, Compound 01.04) in 1-propanol (11 ml, 150 mmol) in a microwave tube was added a sodium carbonate solution (1.4 ml, 2.0 M, 2.8 mmol), 2-bromo-5-methyl-1,3,4-oxadiazole (236 mg, 1.40 mmol), triphenylphosphine (24.5 mg, 93.6 μmol) and PdCl₂(PPh₃)₂(115 mg, 140 μmol). The mixture was heated to 110° C. for 14 h. Further 2-bromo-5-methyl-1,3,4-oxadiazole (157 mg), triphenylphosphine (24.5 mg, 93.6 μmol) and PdCl₂(PPh₃)₂(115 mg, 140 μmol) were added and the mixture was heated to 110° C. for 14 h. The crude reaction mixture was filtered through aminophase-silicagel and the solvent was removed in vacuum. Silicagel chromatography gave 54.0 mg (11% yield) of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=491 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.172 (0.62), 1.394 (16.00), 1.987 (1.19), 2.309 (1.73), 2.345 (0.94), 2.357 (1.39), 2.369 (0.98), 2.574 (5.80), 2.939 (3.74), 3.333 (7.54), 3.349 (1.13), 5.759 (0.80).

Example 66.01.02
cyclopropyl{4-[(2-{[6-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with crude 6-(5-methyl-1,3,4-oxadiazol-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (20.0 mg, Compound 66.01) and cyclopropanecarboxylic acid (11 μl, 140 μmol), Example 66.01.02 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 2.00 mg of the title compound.

LC-MS (Method 2): R_t=0.90 min; MS (ESIpos): m/z=459 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.677 (1.14), 0.685 (2.68), 0.690 (1.63), 0.697 (1.35), 0.704 (3.15), 0.709 (2.71), 0.713 (2.86), 0.721 (2.60), 0.725 (3.07), 0.733 (1.47), 0.757 (1.73), 0.765 (3.72), 0.769 (2.75), 0.776 (3.23), 0.779 (1.58), 0.782 (2.04), 0.784 (2.10), 0.789 (3.30), 0.797 (1.44), 0.803 (1.53), 0.807 (1.46), 0.809 (3.54), 0.817 (1.65), 1.467 (1.02), 1.475 (0.79), 1.481 (0.63), 1.487 (1.58), 1.495 (0.64), 1.499 (0.96), 1.506 (0.78), 1.967 (1.09), 2.327 (0.88), 2.331 (1.03), 2.363 (1.18), 2.446 (1.27), 2.518 (3.16), 2.523 (2.23), 2.575 (16.00), 2.669 (0.70), 3.504 (1.33), 3.528 (4.91), 3.707 (1.11), 5.759 (3.22), 6.965 (1.16), 6.978 (1.14), 7.185 (1.40), 8.284 (1.86), 8.297 (1.70).

Example 66.01.03
3,3,3-trifluoro-1-{4-[(2-{[6-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Starting with crude 6-(5-methyl-1,3,4-oxadiazol-2-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (26.0 mg, Compound 66.01) and 3,3,3-trifluoropropanoic acid (16 μl, 180 μmol), Example 66.01.03 was prepared analogously to the procedure for the preparation of Example 16.05.02.

Yield: 10.0 mg of the title compound.

LC-MS (Method 2): R_t=0.94 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.858 (0.75), 1.231 (0.94), 1.395 (0.78), 2.370 (1.25), 2.382 (1.87), 2.395 (1.40), 2.411 (1.40), 2.424 (1.90), 2.436 (1.32), 2.518 (6.78), 2.523 (4.78), 2.575 (16.00), 3.459 (1.40), 3.473 (1.92), 3.483 (1.56), 3.495 (1.56), 3.505 (1.92), 3.530 (4.75), 3.610 (0.91), 3.637 (2.57), 3.665 (2.42), 3.693 (0.78), 6.958 (0.99), 6.972 (0.91), 7.185 (1.14), 7.652 (0.91), 8.129 (0.99), 8.283 (1.45), 8.296 (1.35), 12.407 (1.53).

Example 67.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-{1-[((1RS)-2,2-dimethylcyclopropyl)methyl]-1H-pyrazol-4-yl}benzene-1,2-diamine (147 mg, 85% pure; see Compound 67.02), Example 67.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 105 mg of the 94% pure title compound.

LC-MS (Method 2): R_t=1.44 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33 (t, 1H), 0.53 (dd, 1H), 1.04-1.08 (m, 3H), 1.08-1.13 (m, 1H), 1.14-1.17 (m, 3H), 1.28 (d, 3H), 1.38 (s, 9H), 2.23-2.44 (m, 4H), 3.27-3.33 (m, 4H), 3.43 (q, 1H), 4.12 (br d, 2H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.18-7.47 (m, 2H), 7.50-7.68 (m, 1H), 7.72-7.84 (m, 1H), 7.95-8.11 (m, 1H), 8.24 (d, 1H), 10.55 (br s, 1H), 12.02 (br s, 1H).

Example 67.02
1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride salt (62.5 mg, see Compound 67.03), Example 67.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 16 mg of the 88% pure title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=581 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33 (t, 1H), 0.53 (dd, 1H), 1.07 (s, 3H), 1.10-1.15 (m, 1H), 1.16 (s, 3H), 1.30 (d, 3H), 2.27-2.47 (m, 4H), 3.39-3.53 (m, 5H), 3.62 (q, 2H), 4.12 (br d, 2H), 6.93 (dd, 1H), 7.17 (s, 1H), 7.20-7.46 (m, 2H), 7.49-7.67 (m, 1H), 7.79 (br d, 1H), 7.96-8.11 (m, 1H), 8.25 (d, 1H), 10.56 (br s, 1H), 12.02 (br s, 1H).

Example 67.03
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(1-{[(1RS)-2,2-dimethylcyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (62.5 mg, see Compound 67.03), Example 67.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 16 mg of the 76% pure title compound.

LC-MS (Method 2): R_t=1.26 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33 (t, 1H), 0.53 (dd, 1H), 0.62-0.73 (m, 4H), 1.07 (s, 3H), 1.11-1.14 (m, 1H), 1.16 (s, 3H), 1.30 (d, 3H), 1.88-1.99 (m, 1H), 2.24-2.45 (m, 4H), 3.39-3.53 (m, 3H), 3.67 (br s, 2H), 4.12 (br d, 2H), 6.94 (dd, 1H), 7.17 (s, 1H), 7.20-7.47 (m, 2H), 7.50-7.69 (m, 1H), 7.79 (br s, 1H), 8.05 (br s, 1H), 8.25 (d, 1H), 10.56 (br s, 1H), 12.03 (br s, 1H).

Example 68.01
tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}benzene-1,2-diamine (158 mg, see Compound 68.02), Example 68.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 89 mg of the 72% pure title compound.

LC-MS (Method 2): R_t=1.75 min; MS (ESIpos): m/z=558 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.34-0.40 (m, 2H), 0.63-0.70 (m, 2H), 1.00 (s, 3H), 1.26-1.31 (m, 3H), 1.38 (s, 9H), 2.24-2.44 (m, 4H), 3.25-3.32 (m, 4H), 3.43 (q, 1H), 3.96 (br s, 2H), 6.92 (d, 1H), 7.18 (br s, 1H), 7.21-7.46 (m, 2H), 7.51-7.68 (m, 1H), 7.73-7.87 (m, 1H), 8.01-8.15 (m, 1H), 8.24 (d, 1H), 10.57 (br s, 1H), 12.09 (br d, 1H).

Example 68.02
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-{2-[(6-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-{1-[(1-methylcyclopropyl)methyl]-1H-pyrazol-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (86.0 mg, see Compound 68.03), Example 68.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 33 mg of the 92% pure title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=567 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.31-0.41 (m, 2H), 0.62-0.72 (m, 2H), 1.00 (s, 3H), 1.30 (d, 3H), 2.26-2.47 (m, 4H), 3.39-3.52 (m, 5H), 3.62 (q, 2H), 3.97 (br s, 2H), 6.86-6.98 (m, 1H), 7.14-7.19 (m, 1H), 7.20-7.48 (m, 2H), 7.50-7.68 (m, 1H), 7.72-7.87 (m, 1H), 7.98-8.14 (m, 1H), 8.20-8.29 (m, 1H), 10.57 (br s, 1H), 12.02 (br d, 1H).

Example 69.01
tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}benzene-1,2-diamine (65.0 mg, 85% purity, see Compound 69.03), Example 69.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 51 mg of the 87% pure title compound.

LC-MS (Method 2): R_t=1.37 min; MS (ESIpos): m/z=577 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm] 1.10-1.16 (m, 2H), 1.23-1.32 (m, 5H), 1.38 (s, 9H), 2.23-2.44 (m, 4H), 3.21-3.32 (m, 4H), 3.43 (q, 1H), 4.40 (s, 2H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.22-7.49 (m, 2H), 7.52-7.72 (m, 1H), 7.79-7.93 (m, 1H), 8.13 (br s, 1H), 8.25 (d, 1H), 10.56 (br s, 1H), 12.04 (br s, 1H).

Example 69.02
1-{4-[(1R or 1S)-1-{2-[(6-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-{1-[(1-chlorocyclopropyl)methyl]-1H-pyrazol-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (45 mg, Compound 69.04), Example 69.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 16 mg of the 97% pure title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=587 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.06-1.17 (m, 2H), 1.21-1.36 (m, 5H), 2.25-2.48 (m, 4H), 3.46 (br d, 5H), 3.62 (q, 2H), 4.41 (s, 2H), 6.94 (d, 1H), 7.17 (s, 1H), 7.28 (br d, 1H), 7.37 (br d, 1H), 7.61 (br s, 1H), 7.86 (s, 1H), 8.15 (br s, 1H), 8.26 (d, 1H), 10.60 (br s, 1H), 12.08 (br s, 1H).

Example 70.01
1-{4-[(1R or 1S)-1-(2-{[7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 70.03), Example 70.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 37 mg of the 96% pure title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=623 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 1.48-1.59 (m, 1H), 1.64-1.77 (m, 1H), 2.23-2.48 (m, 5H), 3.40-3.53 (m, 5H), 3.62 (q, 2H), 4.21-4.39 (m, 2H), 6.96 (d, 1H), 7.08 (s, 1H), 7.19 (d, 1H), 7.45 (d, 1H), 7.83 (s, 1H), 8.15 (s, 1H), 8.28 (d, 1H), 10.98 (s, 1H), 12.31 (s, 1H).

Example 70.02
{4-[(1R or 1S)-1-(2-{[7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

Starting with 7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 70.03), Example 70.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 61 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=581 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.61-0.74 (m, 4H), 1.30 (br d, 3H), 1.48-1.60 (m, 1H), 1.71 (tdd, 1H), 1.88-1.97 (m, 1H), 2.21-2.45 (m, 5H), 3.47 (br s, 3H), 3.67 (br s, 2H), 4.21-4.39 (m, 2H), 6.97 (br d, 1H), 7.08 (s, 1H), 7.19 (d, 1H), 7.45 (d, 1H), 7.83 (s, 1H), 8.16 (s, 1H), 8.28 (d, 1H), 10.98 (br s, 1H), 12.32 (s, 1H).

Example 71.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with 4-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (62.5 mg, see Compound 71.03), Example 71.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 41 mg of the 96% pure title compound.

LC-MS (Method 2): R_t=1.45 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.22-1.33 (m, 5H), 1.38 (s, 9H), 1.47-1.69 (m, 6H), 2.22-2.45 (m, 5H), 3.24-3.33 (m, 4H), 3.43 (q, 1H), 3.97-4.07 (m, 2H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.18-7.47 (m, 2H), 7.49-7.67 (m, 1H), 7.78 (br d, 1H), 8.07 (br d, 1H), 8.24 (d, 1H), 10.55 (br s, 1H), 12.02 (br s, 1H).

Example 71.02
1-(4-{(1R or 1S)-1-[2-({6-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-[1-(cyclopentylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (37 mg, see Compound 70.04), Example 71.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 15 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=581 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.21-1.69 (m, 11H), 2.37-2.45 (m, 1H), 3.22-3.56 (m, 9H), 3.65 (q, 2H), 4.04 (d, 2H), 7.11-7.24 (m, 1H), 7.26 (br s, 1H), 7.40-7.47 (m, 1H), 7.49-7.55 (m, 1H), 7.67 (s, 1H), 7.83 (s, 1H), 8.15 (s, 1H), 8.39 (br d, 1H), 11.75 (br d, 1H), 12.90 (br s, 1H).

Example 72.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with 4-[1-(propan-2-yl)-1H-pyrazol-5-yl]benzene-1,2-diamine (550 mg, see Compound 72.01), Example 72.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 400 mg of the 97% pure title compound.

LC-MS (Method 2): R_t=1.34 min; MS (ESIpos): m/z=531 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.32-1.43 (m, 15H), 2.22-2.44 (m, 4H), 3.25-3.32 (m, 4H), 3.44 (q, 1H), 4.53-4.71 (m, 1H), 6.23 (s, 1H), 6.94 (d, 1H), 6.98-7.61 (m, 5H), 8.18-8.30 (m, 1H), 10.66 (br d, 1H), 12.22 (br d, 1H).

Example 72.02
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

Starting with N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-amine hydrochloride (126 mg, see Compound 72.02), Example 72.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 50 mg of the 100% pure title compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (br d, 3H), 1.38 (d, 6H), 2.27-2.47 (m, 4H), 3.38-3.54 (m, 5H), 3.62 (q, 2H), 4.54-4.68 (m, 1H), 6.24 (d, 1H), 6.96 (d, 1H), 7.06 (br d, 1H), 7.17 (s, 1H), 7.49 (d, 3H), 8.28 (d, 1H), 10.70 (br s, 1H), 12.25 (br s, 1H).

Example 72.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

Starting with N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[1-(propan-2-yl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-amine hydrochloride (126 mg, see Compound 72.02), Example 72.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 46 mg of the 100% pure title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.62-0.75 (m, 4H), 1.30 (d, 3H), 1.38 (br d, 6H), 1.89-1.98 (m, 1H), 2.23-2.45 (m, 4H), 3.40-3.54 (m, 3H), 3.68 (br s, 2H), 4.53-4.70 (m, 1H), 6.24 (s, 1H), 6.96 (dd, 1H), 6.99-7.12 (m, 1H), 7.18 (br s, 1H), 7.27-7.62 (m, 3H), 8.28 (d, 1H), 10.67 (br d, 1H), 12.22 (br d, 1H).

Example 73.01
1-{4-[(1R or 1S)-1-(2-{[6-(1,4-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1,4-dimethyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (33 mg, see Compound 73.03), Example 73.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 17 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 1.98 (s, 3H), 2.31-2.46 (m, 4H), 3.40-3.52 (m, 5H), 3.56-3.67 (m, 2H), 3.71 (s, 3H), 6.36-6.65 (m, 1H), 6.96 (d, 1H), 7.03 (br d, 1H), 7.14-7.21 (m, 1H), 7.31 (s, 1H), 7.42-7.58 (m, 1H), 8.28 (d, 1H), 10.69 (br s, 1H), 12.21 (br s, 1H).

Example 74.01
tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}benzene-1,2-diamine (80.0 mg, see Compound 74.02), Example 74.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 84 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.37 min; MS (ESIpos): m/z=557 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.29-0.40 (m, 2H), 0.42-0.51 (m, 1H), 0.56-0.65 (m, 1H), 1.22-1.31 (m, 4H), 1.38 (s, 9H), 1.54 (d, 3H), 2.23-2.44 (m, 4H), 3.24-3.33 (m, 4H), 3.43 (q, 1H), 3.59-3.70 (m, 1H), 6.92 (dd, 1H), 7.16 (s, 1H), 7.20-7.48 (m, 2H), 7.50-7.68 (m, 1H), 7.80 (br s, 1H), 8.13 (br d, 1H), 8.24 (d, 1H), 10.55 (br s, 1H), 12.02 (br s, 1H).

Example 74.02
1-{4-[(1R or 1S)-1-{2-[(6-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-{1-[(1RS)-1-cyclopropylethyl]-1H-pyrazol-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (83.0 mg, see Compound 74.03), Example 74.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 42 mg of the 86% pure title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=567 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.29-0.40 (m, 2H), 0.41-0.50 (m, 1H), 0.55-0.65 (m, 1H), 1.20-1.34 (m, 4H), 1.54 (d, 3H), 2.29-2.47 (m, 4H), 3.39-3.52 (m, 5H), 3.62 (q, 3H), 6.93 (dd, 1H), 7.17 (s, 1H), 7.20-7.47 (m, 2H), 7.50-7.67 (m, 1H), 7.78 (br d, 1H), 8.07-8.19 (m, 1H), 8.25 (d, 1H), 10.57 (br s, 1H), 12.02 (br s, 1H).

Example 75.01
tert-butyl 4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with 3-chloro-4-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]benzene-1,2-diamine (171 mg, 86% purity; see Compound 75.02), Example 75.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 117 mg of the 94% pure title compound.

LC-MS (Method 2): R_t=1.49 min; MS (ESIpos): m/z=591 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.74-1.91 (m, 4H), 1.95-2.06 (m, 2H), 2.25-2.45 (m, 4H), 2.73-2.85 (m, 1H), 3.24-3.33 (m, 4H), 3.40-3.51 (m, 1H), 4.17 (d, 2H), 6.95 (d, 1H), 7.08 (s, 1H), 7.17 (d, 1H), 7.44 (d, 1H), 7.76 (s, 1H), 8.07 (s, 1H), 8.27 (d, 1H), 10.96 (s, 1H), 12.29 (s, 1H).

Example 75.02
1-(4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (59 mg, see Compound 75.03), Example 75.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 42 mg of the 96% pure title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=601 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.72-1.92 (m, 4H), 1.95-2.07 (m, 2H), 2.28-2.46 (m, 4H), 2.73-2.85 (m, 1H), 3.40-3.52 (m, 5H), 3.62 (q, 2H), 4.13-4.22 (m, 2H), 6.96 (d, 1H), 7.08 (s, 1H), 7.17 (d, 1H), 7.44 (d, 1H), 7.76 (s, 1H), 8.07 (s, 1H), 8.28 (d, 1H), 10.97 (s, 1H), 12.30 (s, 1H).

Example 75.03
(4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

Starting with 7-chloro-6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (59 mg, see Compound 75.03), Example 75.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 36 mg of the 91% pure title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=559 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.62-0.74 (m, 4H), 1.30 (d, 3H), 1.74-2.06 (m, 7H), 2.24-2.45 (m, 4H), 2.72-2.85 (m, 1H), 3.40-3.54 (m, 3H), 3.67 (br s, 2H), 4.11-4.22 (m, 2H), 6.97 (d, 1H), 7.08 (s, 1H), 7.17 (d, 1H), 7.44 (d, 1H), 7.76 (s, 1H), 8.07 (s, 1H), 8.28 (d, 1H), 10.97 (s, 1H), 12.30 (s, 1H).

Example 76.01
1-{4-[(2-{[6-(6-cyclopropylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(6-cyclopropylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 76.02), Example 76.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 50 mg of the 91% pure title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=537 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.03-1.15 (m, 4H), 2.18 (quin, 1H), 2.35-2.45 (m, 4H), 3.44-3.55 (m, 6H), 3.65 (q, 2H), 6.95 (br d, 1H), 7.20 (s, 1H), 7.38-7.65 (m, 1H), 7.87-8.08 (m, 2H), 8.18-8.47 (m, 2H), 8.93 (d, 1H), 10.70-10.86 (m, 1H), 12.29 (br d, 1H).

Example 76.02
cyclopropyl{4-[(2-{[6-(6-cyclopropylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(6-cyclopropylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 76.02), Example 76.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 38 mg of the 97% pure title compound.

LC-MS (Method 4): R_t=1.07 min; MS (ESIpos): m/z=495 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.64-0.76 (m, 4H), 1.02-1.13 (m, 4H), 1.91-2.03 (m, 1H), 2.18 (quin, 1H), 2.34-2.47 (m, 4H), 3.44-3.57 (m, 4H), 3.71 (br s, 2H), 6.96 (d, 1H), 7.22 (s, 1H), 7.39-7.66 (m, 1H), 7.88-8.08 (m, 2H), 8.17-8.46 (m, 2H), 8.93 (d, 1H), 10.78 (br s, 1H), 12.34 (br s, 1H).

Example 77.01
6-{2-[(4-{[4-(3,3,3-trifluoropropanoyl)piperazin-1-yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}pyrimidine-4-carbonitrile

embedded image

Starting with 6-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyrimidine-4-carbonitrile hydrochloride (120 mg, see Compound 77.02), Example 77.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 12 mg of the 90% pure title compound.

LC-MS (Method 4): R_t=1.07 min; MS (ESIpos): m/z=522 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.35-2.46 (m, 4H), 3.42-3.57 (m, 6H), 3.65 (q, 2H), 6.92-7.03 (m, 1H), 7.20 (br s, 1H), 7.42-7.68 (m, 1H), 8.05 (dd, 1H), 8.23-8.55 (m, 2H), 8.63-8.85 (m, 1H), 9.31 (br s, 1H), 10.76-10.96 (m, 1H), 12.40 (br s, 1H).

Example 78.01
3,3,3-trifluoro-1-(4-{[2-({6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, see Compound 78.02), Example 78.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 17 mg of the 85% pure title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 6H), 2.41 (dt, 4H), 3.05 (dt, 1H), 3.42-3.56 (m, 6H), 3.65 (q, 2H), 6.95 (br d, 1H), 7.20 (s, 1H), 7.39-7.65 (m, 1H), 7.83-8.03 (m, 2H), 8.19-8.45 (m, 2H), 9.06 (d, 1H), 10.79 (d, 1H), 12.23-12.37 (m, 1H).

Example 78.02
cyclopropyl(4-{[2-({6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(propan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (110 mg, see Compound 78.02), Example 78.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 20 mg of the 88% pure title compound.

LC-MS (Method 2): R_t=1.13 min; MS (ESIpos): m/z=497 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.64-0.78 (m, 4H), 1.30 (d, 6H), 1.93-2.01 (m, 1H), 2.34-2.47 (m, 4H), 2.97-3.13 (m, 1H), 3.44-3.58 (m, 4H), 3.71 (br s, 2H), 6.90-6.99 (m, 1H), 7.14-7.25 (m, 1H), 7.35-7.64 (m, 1H), 7.83-8.01 (m, 2H), 8.19-8.45 (m, 2H), 9.06 (d, 1H), 10.68-10.86 (m, 1H), 12.23-12.37 (m, 1H).

Example 79.01
3,3,3-trifluoro-1-(4-{[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with 6-[6-(methoxymethyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, see Compound 79.02), Example 79.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 40 mg of the 79% pure title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.34-2.45 (m, 4H), 3.39 (s, 2H), 3.43-3.56 (m, 7H), 3.65 (q, 2H), 4.55 (s, 2H), 6.86-7.04 (m, 1H), 7.19 (s, 1H), 7.32-8.08 (m, 3H), 8.14-8.52 (m, 2H), 9.01-9.34 (m, 1H), 10.82 (br s, 1H), 12.35 (br s, 1H).

Example 79.02
cyclopropyl(4-{[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with 6-[6-(methoxymethyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (200 mg, see Compound 79.02), Example 79.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 38 mg of the 89% pure title compound.

LC-MS (Method 2): R_t=0.99 min; MS (ESIpos): m/z=499 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.65-0.75 (m, 4H), 1.92-2.01 (m, 1H), 2.34-2.47 (m, 4H), 3.44-3.56 (m, 7H), 3.71 (br s, 2H), 4.55 (s, 2H), 6.89-7.00 (m, 1H), 7.19 (s, 1H), 7.40-8.05 (m, 3H), 8.15-8.50 (m, 2H), 9.09 (s, 1H), 10.82 (br s, 1H), 12.35 (br s, 1H).

Example 79.03
(4-{[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

Starting with 6-[6-(methoxymethyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (107 mg, see Compound 79.02), Example 79.03 was prepared analogously to the procedure for the preparation of Example 83.05.

Yield: 8 mg of the 86% pure title compound.

LC-MS (Method 4): R_t=1.08 min; MS (ESIpos): m/z=567 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.12-1.22 (m, 2H), 1.25-1.33 (m, 2H), 2.42 (br s, 4H), 3.42-3.72 (m, 9H), 4.55 (s, 2H), 6.96 (br d, 1H), 7.19 (s, 1H), 7.38-7.70 (m, 1H), 7.86-8.02 (m, 2H), 8.14-8.46 (m, 2H), 9.09 (s, 1H), 10.82 (br s, 1H), 12.19-12.46 (m, 1H).

Example 80.01
tert-butyl 4-{[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

tert-butyl 4-[(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (608 mg, see Compound 80.01) was dissolved in 8 mL dioxane and treated with sodium hydride (280 mg, 60% purity). Then, cyclopropylmethanol (504 mg) was added and the reaction mixture was stirred at rt for 30 min and afterwards concentrated under reduced pressure. The crude product was purified by flash chromatography.

Yield: 312 mg of the title compound with 96% purity.

LC-MS (Method 2): R_t=1.41 min; MS (ESIpos): m/z=558 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]=0.31-0.41 (m, 2H), 0.53-0.63 (m, 2H), 1.23-1.33 (m, 1H), 1.39 (s, 9H), 2.29-2.41 (m, 4H), 3.34 (s, 4H), 3.50 (s, 2H), 4.22 (d, 2H), 6.94 (br d, 1H), 7.18 (br s, 1H), 7.30-7.61 (m, 2H), 7.91 (br s, 1H), 8.12-8.40 (m, 2H), 8.77 (d, 1H), 10.76 (br s, 1H), 12.27 (br d, 1H).

Example 80.02
1-(4-{[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 80.02), Example 80.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 35 mg of the 89% pure title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=567 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33-0.44 (m, 2H), 0.53-0.62 (m, 2H), 1.21-1.37 (m, 1H), 2.40 (dt, 4H), 3.41-3.56 (m, 6H), 3.65 (q, 2H), 4.23 (d, 2H), 6.95 (br d, 1H), 7.13-7.61 (m, 3H), 7.92 (br d, 1H), 8.11-8.41 (m, 2H), 8.77 (d, 1H), 10.74 (br s, 1H), 12.25 (br s, 1H).

Example 80.03
cyclopropyl(4-{[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with 6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 80.02), Example 80.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 30 mg of the 98% pure title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33-0.42 (m, 2H), 0.53-0.63 (m, 2H), 0.65-0.76 (m, 4H), 1.22-1.36 (m, 1H), 1.92-2.04 (m, 1H), 2.33-2.46 (m, 4H), 3.44-3.57 (m, 4H), 3.71 (br s, 2H), 4.23 (d, 2H), 6.96 (br d, 1H), 7.20 (br s, 1H), 7.32-7.63 (m, 2H), 7.92 (br d, 1H), 8.13-8.40 (m, 2H), 8.77 (d, 1H), 10.75 (br s, 1H), 12.27 (br s, 1H).

Example 81.01
tert-butyl 4-({2-[(6-{6-[(2-hydroxyethyl)amino]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

Yield: 40 mg of the title compound with 97% purity.

LC-MS (Method 4): R_t=1.04 min; MS (ESIpos): m/z=546 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.40 (s, 9H), 2.29-2.40 (m, 4H), 3.34-3.38 (m, 4H), 3.42 (br d, 2H), 3.50 (s, 2H), 3.56 (q, 2H), 4.79 (t, 1H), 6.87-7.02 (m, 2H), 7.10-7.60 (m, 3H), 7.73 (br s, 1H), 7.92-8.22 (m, 1H), 8.26 (d, 1H), 8.45 (s, 1H), 10.70 (br s, 1H), 12.22 (br d, 1H).

Example 82.01
tert-butyl 4-{[2-({6-[6-(cyclopropylamino)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 6 mg of the title compound with 95% purity.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=542 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.52 (br s, 2H), 0.71-0.89 (m, 2H), 1.13-1.27 (m, 1H), 1.40 (s, 9H), 2.27-2.41 (m, 4H), 3.34-3.40 (m, 4H), 3.50 (s, 2H), 6.87-7.62 (m, 6H), 7.80 (br s, 1H), 8.26 (br d, 1H), 8.47 (s, 1H), 10.72 (br s, 1H), 12.26 (br s, 1H).

Example 83.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(6-chloro-5-methoxypyrimidin-4-yl)benzene-1,2-diamine (1.07 g, see Compound 83.02), Example 83.01 was prepared analogously to the procedure for the preparation of Example 39.02.01.

Yield: 1.16 g of the title compound with 88% purity.

LC-MS (Method 2): R_t=1.38 min; MS (ESIpos): m/z=566 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.24-2.45 (m, 4H), 3.23-3.32 (m, 4H), 3.45 (q, 1H), 3.65-3.78 (m, 3H), 6.96 (br d, 1H), 7.09-7.26 (m, 1H), 7.40-7.66 (m, 1H), 7.80-8.00 (m, 1H), 8.24-8.33 (m, 1H), 8.41 (br s, 1H), 8.80 (s, 1H), 10.63-10.87 (m, 1H), 12.16-12.45 (m, 1H).

Example 83.02
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (958 mg, see Example 83.01), Example 83.02 was prepared analogously to the procedure for the preparation of Compound 61.01.

Yield: 635 mg of the title compound with 100% purity.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=546 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.24-2.45 (m, 4H), 2.51-2.52 (m, 3H), 3.21-3.32 (m, 4H), 3.40-3.50 (m, 1H), 3.51-3.69 (m, 3H), 6.95 (d, 1H), 7.16 (br s, 1H), 7.34-7.66 (m, 1H), 7.75-7.97 (m, 1H), 8.04-8.40 (m, 2H), 8.80 (s, 1H), 10.59-10.82 (m, 1H), 12.16-12.37 (m, 1H).

Example 83.03
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(5-methoxy-6-methyl pyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

Starting with 6-(5-methoxy-6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (200 mg, see Compound 83.03), Example 83.03 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 98 mg of the 97% pure title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.26-2.48 (m, 4H), 2.51 (s, 3H), 3.38-3.68 (m, 10H), 6.96 (d, 1H), 7.17 (s, 1H), 7.36-7.64 (m, 1H), 7.75-7.97 (m, 1H), 8.02-8.40 (m, 2H), 8.80 (s, 1H), 10.75 (d, 1H), 12.13-12.41 (m, 1H).

Example 83.04
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(5-methoxy-6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (200 mg, see Compound 83.03), Example 83.04 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 115 mg of the 100% pure title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.61-0.74 (m, 4H), 1.30 (d, 3H), 1.86-2.00 (m, 1H), 2.24-2.47 (m, 4H), 2.51 (s, 3H), 3.46 (q, 3H), 3.53-3.62 (m, 3H), 3.63-3.73 (m, 2H), 6.97 (d, 1H), 7.18 (s, 1H), 7.37-7.62 (m, 1H), 7.74-7.95 (m, 1H), 8.03-8.40 (m, 2H), 8.80 (s, 1H), 10.63-10.82 (m, 1H), 12.21-12.41 (m, 1H).

Example 83.05
{4-[(1R or IS)-1-(2-{[6-(5-methoxy-6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

6-(5-methoxy-6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (150 mg, Compound 83.03), 1-(trifluoromethyl)cyclopropanecarboxylic acid (79 μl), 1-[Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-oxide hexafluorophosphate (309 mg) and sodium bicarbonate (136 mg) were combined in 2.1 mL DMF and stirred at room temperature overnight. The reaction mixture was filtrated and given to standard reversed-phased preparative HPLC purification to provide the target compound.

Yield: 92 mg of the title compound with 95% purity.

LC-MS (Method 4): R_t=1.14 min; MS (ESIpos): m/z=581 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.10-1.20 (m, 2H), 1.23-1.37 (m, 5H), 2.28-2.48 (m, 4H), 2.51 (br s, 3H), 3.46 (q, 1H), 3.59 (br s, 7H), 6.96 (d, 1H), 7.17 (s, 1H), 7.38-7.65 (m, 1H), 7.76-7.96 (m, 1H), 8.03-8.39 (m, 2H), 8.80 (s, 1H), 10.75 (d, 1H), 12.30 (br d, 1H).

Example 84.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (1.56 g, 85% purity; see Compound 23.15.01), Example 84.01 was prepared analogously to the procedure for the preparation of Compound 60.01.

Yield: 327 mg of the title compound with 90% purity.

LC-MS (Method 4): R_t=1.27 min; MS (ESIpos): m/z=545 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.22-2.44 (m, 4H), 3.32 (br s, 3H), 3.39-3.50 (m, 5H), 4.55 (s, 2H), 6.96 (br s, 1H), 7.16 (s, 1H), 7.20-7.29 (m, 1H); 7.59-7.68 (m, 1H), 7.86-8.05 (m, 2H), 8.24-8.30 (m, 1H), 9.09 (s, 1H), 10.79 (br s, 1H), 12.22-12.41 (m, 1H).

Example 84.02
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

Starting with 6-[6-(methoxymethyl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (184 mg, see Compound 84.01), Example 84.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 67 mg of the 98% pure title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.25-2.46 (m, 4H), 3.38-3.53 (m, 8H), 3.62 (q, 2H), 4.55 (s, 2H), 6.97 (br s, 1H), 7.17 (s, 1H), 7.36-7.50 (m, 1H), 7.84-8.02 (m, 2H), 8.15-8.44 (m, 2H), 9.09 (br s, 1H), 10.81 (br s, 1H), 12.22-12.43 (m, 1H).

Example 84.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

Starting with 6-[6-(methoxymethyl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (184 mg, see Compound 84.01), Example 84.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 57 mg of the 97% pure title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.59-0.75 (m, 4H), 1.30 (d, 3H), 1.86-1.99 (m, 1H), 2.21-2.44 (m, 4H), 3.38-3.54 (m, 6H), 3.67 (br s, 2H), 4.55 (s, 2H), 6.97 (br s, 1H), 7.18 (s, 1H), 7.36-7.50 (m, 1H), 7.86-8.03 (m, 2H), 8.15-8.46 (m, 2H), 9.09 (br s, 1H), 10.80 (br s, 1H), 12.24-12.46 (m, 1H).

Example 85.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(1R or 1S)-1-(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (3.23 g, 85% purity, see Compound 23.15.01), Example 85.01 was prepared analogously to the procedure for the preparation of Compound 76.01.

Yield: 89 mg of the title compound with 100% purity.

LC-MS (Method 4): R_t=1.38 min; MS (ESIpos): m/z=535 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.23-2.44 (m, 4H), 3.26-3.32 (m, 4H), 3.45 (q, 1H), 6.90-7.03 (m, 1H), 7.17 (s, 1H), 7.37-7.66 (m, 1H), 8.00 (br d, 1H), 8.13-8.50 (m, 3H), 9.01 (s, 1H), 10.80 (br d, 1H), 12.37 (d, 1H).

Example 85.01 Alternative Procedure
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of 1H-imidazole (21 mg) and di-1H-imidazol-1-ylmethanethione (391 mg, 90% purity) in THF (10 mL) was added tert-butyl 4-[(1R or 1S)-1-(2-aminopyridin-4-yl)ethyl]piperazine-1-carboxylate (500 mg, 93% purity, see Compound 36.05.), dissolved in THF (10 mL) at r.t. The mixture was stirred at 60° C. for 2 h. Further di-1H-imidazol-1-ylmethanethione (60 mg) was added and the mixture was stirred at 60° C. for 1 h. 4-(6-chloropyrimidin-4-yl)benzene-1,2-diamine (718 mg, 70% purity see Compound 85.02), dissolved in THF (3 mL) was added and the mixture was stirred at r.t. for 16 h. The mixture was filtered and N,N′-dipropan-2-ylcarbodiimide (510 μl) was added to the solution at r.t. The mixture was stirred at r.t. for 65 h. The crude reaction mixture was filtered and the solution was concentrated in vacuum. Silicagel chromatography gave 600 mg of the title compound.

LC-MS (Method 2): R_t=1.36 min; MS (ESIpos): m/z=535 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.990 (0.48), 1.006 (0.43), 1.153 (1.95), 1.172 (4.04), 1.189 (2.08), 1.279 (1.73), 1.296 (1.75), 1.376 (16.00), 1.987 (7.35), 2.296 (0.41), 2.309 (0.49), 2.383 (0.47), 2.518 (0.62), 2.523 (0.43), 3.999 (0.59), 4.016 (1.76), 4.034 (1.72), 4.052 (0.55), 5.758 (0.93), 6.977 (0.56), 6.979 (0.67), 7.011 (3.00), 7.170 (0.89), 7.233 (0.42), 7.637 (1.85), 8.273 (0.79), 8.286 (0.80), 9.009 (1.07).

Example 85.02
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (60.0 mg, see Example 85.01), was dissolved in 0.77 mL dioxane and sodium hydride (26.9 mg, 60% purity) was added portionwise. cyclopropylmethanol (53 μl) was added into the reaction mixture. It was stirred for 30 min at rt. The reaction mixture was diluted with ethyl acetate and the reaction was stopped by the addition of water. The layers were separated and the aqueous layer was extracted with ethyl acetate twice. The combined organic layers were washed with brine and dried using a water resistant filter. The clear filtrate was concentrated under reduced pressure.

Yield: 64 mg of the title compound with 92% purity.

LC-MS (Method 4): R_t=1.47 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.33-0.41 (m, 2H), 0.55-0.63 (m, 2H), 0.77-0.88 (m, 1H), 1.26-1.33 (m, 3H), 1.38 (s, 9H), 2.24-2.44 (m, 4H), 3.25-3.33 (m, 4H), 3.45 (q, 1H), 4.23 (d, 2H), 6.95 (br d, 1H), 7.17 (br s, 1H), 7.31-7.60 (m, 2H), 7.91 (br s, 1H), 8.14-8.40 (m, 2H), 8.73-8.79 (m, 1H), 10.73 (br s, 1H), 12.29 (br s, 1H).

Example 85.03
1-(4-{(1R or 1S)-1-[2-({6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-[6-(cyclopropylmethoxy)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (184 mg, see Compound 85.03), Example 85.03 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 18 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=581 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.34-0.42 (m, 2H), 0.54-0.64 (m, 2H), 1.20-1.36 (m, 4H), 2.29-2.47 (m, 4H), 3.40-3.52 (m, 5H), 3.62 (q, 2H), 4.23 (d, 2H), 6.96 (br s, 1H), 7.17 (br d, 1H), 7.33-7.61 (m, 2H), 7.86-7.96 (m, 1H), 8.16-8.42 (m, 2H), 8.77 (d, 1H), 10.66-10.81 (m, 1H), 12.21-12.33 (m, 1H).

Example 86.01
tert-butyl 4-[(1R or IS)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-7-fluoro-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-3-fluorobenzene-1,2-diamine (1.65 g, 90% purity, see Compound 86.01), Example 86.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 1.5 g of the 92% pure title compound.

LC-MS (Method 2): R_t=1.38 min; MS (ESIpos): m/z=597 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.28 (d, 3H), 1.38 (s, 9H), 1.46-1.60 (m, 1H), 1.70 (tdd, 1H), 2.19-2.44 (m, 5H), 3.25-3.33 (m, 4H), 3.39-3.50 (m, 1H), 4.21-4.38 (m, 2H), 6.94 (d, 1H), 7.10 (s, 1H), 7.21-7.38 (m, 2H), 7.85-7.95 (m, 1H), 8.14 (d, 1H), 8.26 (d, 1H), 10.79 (s, 1H), 12.29 (s, 1H)

Example 86.02
1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-7-fluoro-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-7-fluoro-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (250 mg, see Compound 86.02), Example 86.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 74 mg of the 99% pure title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=607 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (br d, 3H), 1.47-1.60 (m, 1H), 1.63-1.78 (m, 1H), 2.22-2.47 (m, 5H), 3.39-3.53 (m, 5H), 3.62 (q, 2H), 4.22-4.40 (m, 2H), 6.96 (d, 1H), 7.11 (s, 1H), 7.23-7.37 (m, 2H), 7.90 (s, 1H), 8.14 (s, 1H), 8.27 (d, 1H), 10.80 (s, 1H), 12.29 (br s, 1H).

Example 86.03
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-7-fluoro-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 7-chloro-6-(1-{[(1RS)-2,2-difluorocyclopropyl]methyl}-1H-pyrazol-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (250 mg, see Compound 86.02), Example 86.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 100 mg of the 96% pure title compound.

LC-MS (Method 2): R_t=1.18 min; MS (ESIpos): m/z=565 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.62-0.76 (m, 4H), 1.30 (d, 3H), 1.48-1.60 (m, 1H), 1.62-1.77 (m, 1H), 1.89-1.98 (m, 1H), 2.20-2.47 (m, 5H), 3.40-3.55 (m, 3H), 3.67 (br s, 2H), 4.22-4.39 (m, 2H), 6.96 (d, 1H), 7.11 (s, 1H), 7.23-7.36 (m, 2H), 7.89 (s, 1H), 8.14 (d, 1H), 8.27 (d, 1H), 10.80 (s, 1H), 12.29 (s, 1H)

Example 87.01
1-(4-{(1R or 1S)-1-[2-({6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (232 mg, see Compound 87.04), Example 87.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 85 mg of the 98% pure title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=563 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.26-2.47 (m, 4H), 3.37-3.52 (m, 5H), 3.56-3.69 (m, 2H), 4.64 (br t, 2H), 6.17-6.58 (m, 1H), 6.93 (dd, 1H), 7.17 (s, 1H), 7.20-7.48 (m, 2H), 7.51-7.68 (m, 1H), 7.85-7.97 (m, 1H), 8.06-8.17 (m, 1H), 8.26 (d, 1H), 10.58 (br s, 1H), 12.05 (br s, 1H).—contains ethyl acetate

Example 87.02
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

Starting with 6-[1-(2,2-difluoroethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (232 mg, see Compound 87.04), Example 87.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 73 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=521 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.59-0.75 (m, 4H), 1.30 (d, 3H), 1.87-1.97 (m, 1H), 2.21-2.47 (m, 4H), 3.39-3.54 (m, 3H), 3.67 (br s, 2H), 4.64 (td, 2H), 6.21-6.59 (m, 1H), 6.94 (dd, 1H), 7.17 (s, 1H), 7.25 (br d, 1H), 7.43 (br s, 1H), 7.51-7.69 (m, 1H), 7.85-7.97 (m, 1H), 8.12 (br s, 1H), 8.26 (d, 1H), 10.58 (br s, 1H), 12.06 (br s, 1H).

Example 88.01
tert-butyl 4-{(1R or 1S)-1-[2-({5-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Starting with 4-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]benzene-1,2-diamine (590 mg, see Compound 88.01), Example 88.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate was purified by flash chromatography.

Yield: 250 mg of the 94% pure title compound.

LC-MS (Method 2): R_t=1.44 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.23-2.45 (m, 4H), 3.24-3.33 (m, 4H), 3.45 (q, 1H), 3.94 (s, 3H), 6.83 (br s, 1H), 6.95 (d, 1H), 7.13-7.29 (m, 2H), 7.41-7.71 (m, 2H), 8.28 (d, 1H), 10.70 (br d, 1H), 12.28 (s, 1H).

Example 88.02
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

Starting 6-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 88.02), Example 88.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 76 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=581 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.25-2.47 (m, 4H), 3.38-3.54 (m, 5H), 3.62 (q, 2H), 3.94 (s, 3H), 6.83 (br s, 1H), 6.96 (d, 1H), 7.14-7.29 (m, 2H), 7.41-7.72 (m, 2H), 8.28 (d, 1H), 10.72 (br d, 1H), 12.27 (br s, 1H).—contains ethyl acetate

Example 88.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

Starting with 6-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 88.02), Example 88.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 40 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.59-0.76 (m, 4H), 1.30 (d, 3H), 1.88-1.98 (m, 1H), 2.20-2.45 (m, 4H), 3.38-3.55 (m, 3H), 3.68 (br s, 2H), 3.94 (s, 3H), 6.83 (br s, 1H), 6.97 (d, 1H), 7.14-7.29 (m, 2H), 7.41-7.74 (m, 2H), 8.29 (d, 1H), 10.71 (br d, 1H), 12.28 (br s, 1H).—contains ethyl acetate

Example 89.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1,3-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 4-(1,3-dimethyl-1H-pyrazol-5-yl)benzene-1,2-diamine (350 mg, 95% purity, see Compound 89.01), Example 89.01 was prepared analogously to the procedure for the preparation of Example 39.02.01. The intermediate thiourea was purified by flash chromatography.

Yield: 190 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.30 min; MS (ESIpos): m/z=517 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.17 (s, 3H), 2.24-2.44 (m, 4H), 3.24-3.32 (m, 4H), 3.44 (q, 1H), 3.77 (s, 3H), 6.10 (s, 1H), 6.90-6.98 (m, 1H), 7.05-7.21 (m, 2H), 7.39 (br s, 1H), 7.51-7.65 (m, 1H), 8.27 (d, 1H), 10.65 (br d, 1H), 12.20 (br s, 1H).

Example 89.02
1-{4-[(1R or 1S)-1-(2-{[6-(1,3-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(1,3-dimethyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (82 mg, see Compound 89.02), Example 89.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 54 mg of the 95% pure title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=527 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.17 (s, 3H), 2.28-2.47 (m, 4H), 3.39-3.53 (m, 5H), 3.62 (q, 2H), 3.77 (s, 3H), 6.10 (s, 1H), 6.95 (d, 1H), 7.08-7.21 (m, 2H), 7.33-7.65 (m, 2H), 8.28 (d, 1H), 10.67 (br s, 1H), 12.21 (br s, 1H).

Example 89.03
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1,3-dimethyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(1,3-dimethyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (82 mg, see Compound 89.02), Example 89.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 20 mg of the 92% pure title compound.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.60-0.75 (m, 4H), 1.30 (d, 3H), 1.88-1.99 (m, 1H), 2.17 (s, 3H), 2.24-2.43 (m, 4H), 3.40-3.53 (m, 3H), 3.68 (br s, 2H), 3.77 (s, 3H), 6.10 (s, 1H), 6.96 (d, 1H), 7.05-7.23 (m, 2H), 7.39 (br s, 1H), 7.51-7.65 (m, 1H), 8.28 (d, 1H), 10.66 (br d, 1H), 12.20 (br s, 1H).

Example 90.01
tert-butyl 4-({2-[(6-{6-[(3-methoxypropyl)amino]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

Yield: 92 mg of the title compound with 77% purity.

LC-MS (Method 4): R_t=1.23 min; MS (ESIpos): m/z=575 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]: 1.396 (13.67), 1.773 (0.50), 1.790 (0.72), 1.806 (0.50), 2.327 (0.42), 2.346 (1.07), 2.358 (1.54), 2.369 (1.10), 3.159 (7.95), 3.172 (8.00), 3.221 (0.71), 3.331 (16.00), 3.350 (1.75), 3.394 (1.06), 3.410 (1.66), 3.426 (0.80), 3.499 (1.70), 4.082 (0.72), 4.096 (2.07), 4.109 (2.02), 4.122 (0.67), 5.759 (0.95), 6.922 (0.65), 6.935 (0.56), 8.257 (0.78), 8.270 (0.75), 8.452 (0.65), 10.709 (0.51).

Example 90.02
3,3,3-trifluoro-1-[4-({2-[(6-{6-[(3-methoxypropyl)amino]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]propan-1-one

embedded image

Starting with 6-{6-[(3-methoxypropyl)amino]pyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (80 mg, see Compound 90.01), Example 90.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 52 mg of the 74% pure title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=584 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=1.79 (quin, 2H), 2.31-2.46 (m, 4H), 3.25 (s, 3H), 3.35-3.44 (m, 4H), 3.44-3.56 (m, 6H), 3.65 (q, 2H), 6.83-6.98 (m, 2H), 7.18 (br s, 1H), 7.26-7.60 (m, 2H), 7.74 (br s, 1H), 7.91-8.24 (m, 1H), 8.27 (d, 1H), 8.45 (s, 1H), 10.72 (br s, 1H), 12.23 (br s, 1H).

Example 91.01
tert-butyl 4-[(2-{[6-(6-ethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Yield: 168 mg of the title compound with 78% purity.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=516 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]: 1.109 (0.44), 1.128 (0.89), 1.147 (0.50), 1.274 (1.61), 1.293 (3.33), 1.312 (1.65), 1.363 (0.44), 1.370 (0.57), 1.395 (16.00), 2.358 (2.05), 2.440 (0.43), 2.459 (0.47), 2.763 (0.45), 2.782 (1.29), 2.801 (1.26), 2.819 (0.43), 3.159 (1.28), 3.172 (1.30), 3.333 (6.33), 3.349 (1.75), 3.502 (2.04), 5.758 (8.24), 6.935 (0.53), 6.947 (0.53), 7.181 (1.09), 7.944 (0.50), 7.966 (0.53), 8.237 (0.45), 8.264 (0.90), 8.276 (0.84), 9.047 (1.29).

Example 91.02
1-{4-[(2-{[6-(6-ethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-(6-ethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (80 mg, see Compound 91.01), Example 91.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 42 mg of the 79% pure title compound.

LC-MS (Method 4): R_t=1.06 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=1.29 (t, 3H), 2.33-2.46 (m, 4H), 2.79 (q, 2H), 3.42-3.56 (m, 6H), 3.65 (q, 2H), 6.95 (br d, 1H), 7.20 (s, 1H), 7.39-7.67 (m, 1H), 7.82-8.01 (m, 2H), 8.15-8.45 (m, 2H), 9.05 (d, 1H), 10.77 (br s, 1H), 11.62-12.95 (m, 1H).

Example 91.03
cyclopropyl{4-[(2-{[6-(6-ethylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

Starting with 6-(6-ethylpyrimidin-4-yl)-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (80 mg, see Compound 91.01), Example 91.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 40 mg of the 91% pure title compound.

LC-MS (Method 2): R_t=1.06 min; MS (ESIpos): m/z=483 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=0.64-0.77 (m, 4H), 1.29 (t, 3H), 1.93-2.03 (m, 1H), 2.31-2.47 (m, 4H), 2.79 (q, 2H), 3.44-3.57 (m, 4H), 3.71 (br s, 2H), 6.96 (br d, 1H), 7.20 (s, 1H), 7.38-7.65 (m, 1H), 7.84-8.02 (m, 2H), 8.19-8.45 (m, 2H), 9.05 (d, 1H), 10.78 (br s, 1H), 12.22-12.40 (m, 1H).

Example 92.01
tert-butyl 4-{[2-({6-[6-(3,5-dimethyl-1,2-oxazol-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Starting with tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (150 mg, see Compound 01.04 and 4-chloro-6-(3,5-dimethyl-1,2-oxazol-4-yl)pyrimidine, which can be prepared from 4,6-dichloropyrimidine and (3,5-dimethylisoxazol-4-yl)boronic acid, Example 92.01 was prepared analogously to the procedure for the preparation of Compound 60.01.

Yield: 106 mg of the title compound with 84% purity.

LC-MS (Method 2): R_t=1.35 min; MS (ESIpos): m/z=582 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]: 1.365 (0.53), 1.396 (16.00), 2.327 (0.64), 2.363 (2.01), 2.669 (0.65), 2.729 (2.92), 3.159 (3.22), 3.172 (3.35), 3.509 (1.94), 4.095 (0.88), 4.108 (0.85), 6.949 (0.49), 7.193 (0.57), 8.032 (0.59), 8.282 (0.65), 9.214 (0.85).

Example 92.02
1-(4-{[2-({6-[6-(3,5-dimethyl-1,2-oxazol-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-[6-(3,5-dimethyl-1,2-oxazol-4-yl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (105 mg, see Compound 92.01), Example 92.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 55 mg of the 83% pure title compound.

LC-MS (Method 4): R_t=1.14 min; MS (ESIpos): m/z=592 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=2.29-2.46 (m, 4H), 2.51 (s, 3H), 2.73 (s, 3H), 3.42-3.56 (m, 6H), 3.65 (q, 2H), 6.96 (br s, 1H), 7.21 (s, 1H), 7.40-7.65 (m, 1H), 7.95-8.14 (m, 2H), 8.22-8.51 (m, 2H), 9.21 (s, 1H), 10.65-10.89 (m, 1H), 12.33 (br s, 1H).

Example 93.01
3,3,3-trifluoro-1-(4-{[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 93.02), Example 93.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 33 mg of the 79% pure title compound.

LC-MS (Method 4): R_t=1.11 min; MS (ESIpos): m/z=566 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.85-2.10 (m, 4H), 2.34-2.46 (m, 4H), 3.36-3.58 (m, 10H), 3.65 (q, 2H), 6.79-6.99 (m, 2H), 7.20 (s, 1H), 7.35-7.61 (m, 1H), 7.87 (br d, 1H), 8.07-8.35 (m, 2H), 8.50 (s, 1H), 10.71 (br s, 1H), 12.24 (d, 1H).

Example 94.01
3,3,3-trifluoro-1-(4-{[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with 6-[6-(morpholin-4-yl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, see Compound 94.02), Example 94.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 38 mg of the 77% pure title compound.

LC-MS (Method 4): R_t=1.02 min; MS (ESIpos): m/z=582 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.35-2.45 (m, 4H), 3.43-3.56 (m, 6H), 3.59-3.75 (m, 10H), 6.94 (br d, 1H), 7.20 (s, 1H), 7.23-7.60 (m, 2H), 7.91 (br d, 1H), 8.16-8.38 (m, 2H), 8.57 (s, 1H), 10.73 (br s, 1H), 12.23 (br d, 1H).

Example 95.01
3,3,3-trifluoro-1-(4-{[2-({6-[6-(methylsulfanyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with 6-[6-(methylsulfanyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 95.02), Example 95.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 9 mg of the 86% pure title compound.

LC-MS (Method 4): R_t=1.13 min; MS (ESIpos): m/z=543 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.29-2.46 (m, 4H), 2.61 (s, 3H), 3.41-3.57 (m, 6H), 3.65 (q, 2H), 6.95 (br d, 1H), 7.20 (s, 1H), 7.37-7.65 (m, 1H), 7.79-8.01 (m, 2H), 8.18-8.45 (m, 2H), 8.92 (s, 1H), 10.79 (br s, 1H), 12.13-12.45 (m, 1H).

Example 95.02
cyclopropyl(4-{[2-({6-[6-(methylsulfanyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

Starting with 6-[6-(methylsulfanyl)pyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 95.02), Example 95.02 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 6 mg of the 52% pure title compound.

LC-MS (Method 4): R_t=1.09 min; MS (ESIpos): m/z=501 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=0.57-0.82 (m, 4H), 1.88-2.01 (m, 1H), 2.28-2.47 (m, 4H), 2.61 (s, 3H), 3.42-3.58 (m, 4H), 3.71 (br s, 2H), 6.89-7.00 (m, 1H), 7.22 (s, 1H), 7.36-7.70 (m, 1H), 7.82-8.03 (m, 2H), 8.19-8.42 (m, 2H), 8.92 (d, 1H), 10.78 (br s, 1H), 12.32 (br s, 1H).

Example 96.01
tert-butyl 4-{[2-({6-[6-(2-hydroxypropan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Yield: 117 mg of the title compound with 90% purity.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=546 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6): δ [ppm]=1.40 (s, 9H), 1.46-1.52 (m, 6H), 2.36 (br t, 4H), 3.35 (br s, 4H), 3.50 (s, 2H), 5.49 (br s, 1H), 6.95 (br d, 1H), 7.17 (s, 1H), 7.36-7.64 (m, 1H), 7.85-8.02 (m, 1H), 8.11-8.45 (m, 3H), 9.08 (s, 1H), 10.80 (br s, 1H), 12.22-12.43 (m, 1H).

Example 96.02
3,3,3-trifluoro-1-(4-{[2-({6-[6-(2-hydroxypropan-2-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-1-one

embedded image

Starting with 2-[6-(2-{[4-(piperazin-1-ylmethyl)pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyrimidin-4-yl]propan-2-ol hydrochloride (115 mg, see Compound 96.02), Example 96.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 60 mg of the 83% pure title compound.

LC-MS (Method 4): R_t=1.00 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.48 (s, 6H), 2.40 (dt, 4H), 3.44-3.58 (m, 6H), 3.65 (q, 2H), 5.49 (s, 1H), 6.96 (br d, 1H), 7.18 (s, 1H), 7.39-7.67 (m, 1H), 7.86-8.02 (m, 1H), 8.11-8.44 (m, 3H), 9.08 (s, 1H), 10.80 (br s, 1H), 12.32 (br s, 1H).

Example 97.01
(rac)-tert-butyl 4-({2-[(6-{6-[1-hydroxyethyl]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

Yield: 142 mg of the title compound with 96% purity.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=532 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.40 (s, 9H), 1.43 (d, 3H), 2.30-2.42 (m, 4H), 3.35 (br s, 4H), 3.50 (s, 2H), 4.66-4.78 (m, 1H), 5.64 (br s, 1H), 6.95 (br d, 1H), 7.17 (s, 1H), 7.39-7.66 (m, 1H), 7.87-8.11 (m, 2H), 8.13-8.44 (m, 2H), 9.06 (s, 1H), 10.80 (br s, 1H), 12.35 (br s, 1H).

Example 97.02
(rac)-3,3,3-trifluoro-1-[4-({2-[(6-{6-[1-hydroxyethyl]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]propan-1-one

embedded image

Starting with (rac)-1-[6-(2-{[4-(piperazin-1-ylmethyl) pyridin-2-yl]amino}-1H-benzimidazol-6-yl)pyrimidin-4-yl]ethanol hydrochloride (155 mg, Compound 97.02), Example 95.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 48 mg of the 99% pure title compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=541 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): ([ppm]=1.43 (d, 3H), 2.35-2.46 (m, 4H), 3.43-3.58 (m, 6H), 3.65 (q, 2H), 4.67-4.79 (m, 1H), 5.64 (br s, 1H), 6.96 (d, 1H), 7.18 (s, 1H), 7.38-7.70 (m, 1H), 7.95 (br s, 1H), 8.05 (br s, 1H), 8.12-8.46 (m, 2H), 9.06 (s, 1H), 10.72-10.89 (m, 1H), 12.34 (br s, 1H).

Example 97.03
1-{4-[(2-{[6-(6-acetylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

As side product Example 97.03 was isolated from the previous reaction Example 97.02.

Yield: 40 mg of the 99% pure title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=539 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.34-2.46 (m, 4H), 2.69 (s, 3H), 3.42-3.58 (m, 6H), 3.65 (q, 2H), 6.96 (br d, 1H), 7.19 (s, 1H), 7.37-7.70 (m, 1H), 8.05 (br d, 1H), 8.23-8.56 (m, 3H), 9.36 (s, 1H), 10.85 (br s, 1H), 12.38 (br s, 1H).

Example 98.01
tert-butyl 4-[(1R or 1S)-1-(2-{[7-chloro-6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

Starting with 3-chloro-4-(6-methylpyrimidin-4-yl)benzene-1,2-diamine (390 mg, see Compound 98.02), Example 98.01 was prepared analogously to the procedure for the preparation of Example 39.02.01.

Yield: 249 mg of the title compound with 91% purity.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=549 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.38 (s, 9H), 2.22-2.45 (m, 4H), 2.54 (s, 3H), 3.24-3.33 (m, 4H), 3.46 (q, 1H), 6.97 (br d, 1H), 7.11 (s, 1H), 7.31 (d, 1H), 7.52-7.61 (m, 1H), 7.74 (s, 1H), 8.29 (d, 1H), 8.96-9.17 (m, 1H), 11.06 (s, 1H), 12.48 (s, 1H).

Example 98.02
1-{4-[(1R or 1S)-1-(2-{[7-chloro-6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

Starting with 7-chloro-6-(6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (135 mg, see Compound 98.03), Example 98.02 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 85 mg of the 85% pure title compound.

LC-MS (Method 4): R_t=1.08 min; MS (ESIpos): m/z=559 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.26-2.47 (m, 4H), 2.54 (s, 3H), 3.38-3.53 (m, 5H), 3.62 (q, 2H), 6.99 (d, 1H), 7.11 (s, 1H), 7.31 (d, 1H), 7.57 (d, 1H), 7.74 (s, 1H), 8.30 (d, 1H), 9.12 (d, 1H), 11.08 (s, 1H), 12.48 (br s, 1H).

Example 98.03
{4-[(1R or IS)-1-(2-{[7-chloro-6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}(cyclopropyl)methanone

embedded image

Starting with 7-chloro-6-(6-methylpyrimidin-4-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (135 mg, see Compound 98.03), Example 98.03 was prepared analogously to the procedure for the preparation of Example 39.02.03.

Yield: 85 mg of the 98% pure title compound.

LC-MS (Method 4): R_t=1.04 min; MS (ESIpos): m/z=517 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.62-0.76 (m, 4H), 1.30 (d, 3H), 1.89-2.00 (m, 1H), 2.25-2.45 (m, 4H), 2.54 (s, 3H), 3.47 (br d, 3H), 3.68 (br s, 2H), 6.99 (d, 1H), 7.12 (br s, 1H), 7.31 (br d, 1H), 7.56 (br d, 1H), 7.74 (d, 1H), 8.30 (d, 1H), 9.12 (d, 1H), 11.06 (br s, 1H), 12.49 (br s, 1H).

Example 99.01
1-(4-{(1R or 1S)-1-[2-({7-chloro-6-[6-(methoxymethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 7-chloro-6-[6-(methoxymethyl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (150 mg, see Compound 99.03), Example 99.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 22 mg of the 77% pure title compound.

LC-MS (Method 4): R_t=1.09 min; MS (ESIpos): m/z=589 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (br d, 3H), 2.25-2.46 (m, 4H), 3.38-3.55 (m, 8H), 3.62 (q, 2H), 4.60 (s, 2H), 6.99 (br d, 1H), 7.10 (s, 1H), 7.37 (d, 1H), 7.59 (d, 1H), 7.84 (s, 1H), 8.30 (d, 1H), 9.21 (d, 1H), 11.10 (s, 1H), 12.51 (brs, 1H).

Example 100.01
1-(4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Starting with 6-[6-(dimethylamino)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (105 mg, see Compound 100.02), Example 100.01 was prepared analogously to the procedure for the preparation of Example 39.02.02.

Yield: 64 mg of the 90% pure title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=554 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.28-2.47 (m, 4H), 3.15 (s, 6H), 3.39-3.53 (m, 5H), 3.56-3.69 (m, 2H), 6.95 (d, 1H), 7.00-7.14 (m, 1H), 7.18 (s, 1H), 7.34-7.59 (m, 1H), 7.89 (br s, 1H), 8.11-8.35 (m, 2H), 8.52 (d, 1H), 10.71 (br s, 1H), 12.23 (br d, 1H).—contains ethyl acetate

Example 100.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

6-[6-(Dimethylamino)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (150 mg, see Compound 100.02), cyclopropanecarboxylic acid (32 μl), NaHCO₃(137 mg) and HATU (155 mg) were stirred in DMF (2.7 ml) for 2 h at rt. The reaction mixture was diluted with water and extracted three times with EtOAc. The combined organic layers were washed with brine, dried (silicone filter) and evaporated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 86.5 mg (100% purity) of the title compound.

LC-MS (Method 2): R_t=1.04 min; MS (ESIpos): m/z=512 [M+H]⁺. ¹H NMR (400 MHz, DMSO-d6) δ ppm 0.64-0.73 (m, 4H) 1.30 (d, J=6.84 Hz, 3H) 1.90-1.97 (m, 1H) 2.24-2.45 (m, 4H) 3.15 (s, 6H) 3.41-3.53 (m, 3H) 3.67 (br s, 2H) 6.96 (d, J=5.07 Hz, 1H) 7.03-7.14 (m, 1H) 7.18 (s, 1H) 7.35-7.57 (m, 1H) 7.89 (br s, 1H) 8.16 (br s, 0.5H) 8.27 (d, J=5.32 Hz, 1H) 8.31 (br s, 0.5H) 8.52 (d, J=1.01 Hz, 1H) 10.71 (br s, 1H) 12.23 (br d, J=16.98 Hz, 1H)

Example 100.04
(4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

A mixture of 6-[6-(dimethylamino)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (190 mg, see Compound 100.02), 1-(trifluoromethyl)cyclopropanecarboxylic acid (159 mg), solid NaHCO₃(173 mg) and HATU (392 mg) was stirred in DMF (2.1 ml) overnight at rt. The crude mixture was purified by flash chromatography on silica gel to give 40.3 mg (95% purity) of the title compound.

LC-MS (Method 2): R_t=1.15 min; MS (ESIpos): m/z=580 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.16 (br s, 2H), 1.21-1.35 (m, 5H), 2.26-2.48 (m, 4H), 3.06-3.20 (m, 6H), 3.45 (q, 1H), 3.56 (br s, 4H), 6.96 (dd, 1H), 7.07 (s, 1H), 7.18 (s, 1H), 7.36-7.66 (m, 2H), 7.89 (dd, 1H), 8.16-8.33 (m, 2H), 8.52 (d, 1H), 10.71 (br s, 1H), 12.23 (br s, 1H).

Example 101.01
4-[(2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carbaldehyde

embedded image

To a mixture of piperazine-1-carbaldehyde (34 mg) in 2 mL DMF was added N-[4-(chloromethyl)pyridin-2-yl]-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine (51 mg) (see Compound 16.30) in 1 mL DMF. Potassium carbonate was added (104 mg) and the resulting mixture was heated to 40° C. for 16 h.

The precipitate was filtered off. The remaining solution was subjected to standard reversed-phase preparative HPLC purification to give 4 mg of the title compound.

LC-MS (UPLC-MS Method 7): R_t=0.64 min; MS (ESIpos): m/z=419 [M+H]⁺.

The examples in the following table 9 were prepared in analogy to example 101.01. UPLC-MS Method 7 was used for determination of retention times and LC-S m/z.

TABLE 9

LC-MS

Ex-

Retention
m/z

ample
Structure
IUPAC Name
time [min]
[M + H]⁺

101.02

embedded image

N-(4-{[4-(2- fluorophenyl)piperazin- 1-yl]methyl}pyridin-2- yl)-6-(3-methyl-1,2,4- oxadiazol-5-yl)-1H- benzimidazol-2-amine
0.81
485

101.03

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(3- methylphenyl)piperazin- 1-yl]methyl}pyridin- 2-yl)-1H-benzimidazol- 2-amine
0.84
481

101.04

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-{4- [(4-phenylpiperazin-1- yl)methyl]pyridin-2-yl}- 1H-benzimidazol-2- amine
0.79
467

101.05

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(pyrimidin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.70
469

101.06

embedded image

1-{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}ethanone
0.63
433

101.07

embedded image

N-(4-{[4-(2- methoxyphenyl) piperazin- 1-yl]methyl}pyridin- 2-yl)-6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- amine
0.78
497

101.08

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-[4- ({4-[5- (trifluoromethyl)pyridin- 2-yl]piperazin-1- yl}methyl)pyridin-2-yl]- 1H-benzimidazol-2- amine
0.92
536

101.09

embedded image

N-(4-{[4-(3- fluorophenyl)piperazin- 1-yl]methyl}pyridin-2- yl)-6-(3-methyl-1,2,4- oxadiazol-5-yl)-1H- benzimidazol-2-amine
0.84
485

101.10

embedded image

{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}(phenyl)methanone
0.78
495

101.11

embedded image

N-(4-{[4-(2,4- difluorophenyl)piperazin- 1-yl]methyl}pyridin- 2-yl)-6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- amine
0.85
503

101.12

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(pyridin-4- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.62
468

101.13

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(pyrazin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.69
469

101.14

embedded image

furan-2-yl{4-[(2-{[6-(3- methyl-1,2,4- oxadiazol-5-yl)-1H- benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}methanone
0.72
485

101.15

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(pyridin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.67
468

101.16

embedded image

2-hydroxy-2-methyl-1- {4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}propan-1-one
0.65
477

101.17

embedded image

N-(4-{[4-(3- methoxypyridin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 6-(3-methyl-1,2,4- oxadiazol-5-yl)-1H- benzimidazol-2-amine
0.72
498

101.18

embedded image

4-{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}benzonitrile
0.80
492

101.19

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(6-methylpyridin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.70
482

101.20

embedded image

4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazine-1- carboxamide
0.60
434

101.21

embedded image

N-(4-{[4-(3,4- difluorophenyl)piperazin- 1-yl]methyl}pyridin- 2-yl)-6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- amine
0.86
503

101.22

embedded image

2-{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}pyridine-3- carbonitrile
0.76
493

101.23

embedded image

N-(4-{[4-(3,5- dichloropyridin-4- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 6-(3-methyl-1,2,4- oxadiazol-5-yl)-1H- benzimidazol-2-amine
0.81
536

101.24

embedded image

{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}(thiophen-2- yl)methanone
0.76
501

101.26

embedded image

{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}(pyridin-3- yl)methanone
0.68
496

101.27

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(1,3,5-triazin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.69
470

101.28

embedded image

1-{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}propan-1-one
0.67
447

101.29

embedded image

N-(4-{[4-(6- chloropyrazin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 6-(3-methyl-1,2,4- oxadiazol-5-yl)-1H- benzimidazol-2-amine
0.82
503

101.30

embedded image

6-(3-methyl-1,2,4- oxadiazol-5-yl)-N-(4- {[4-(4-methylpyridin-2- yl)piperazin-1- yl]methyl}pyridin-2-yl)- 1H-benzimidazol-2- amine
0.69
482

101.31

embedded image

{4-[(2-{[6-(3-methyl- 1,2,4-oxadiazol-5-yl)- 1H-benzimidazol-2- yl]amino}pyridin-4- yl)methyl]piperazin-1- yl}(pyrrolidin-1- yl)methanone
0.70
488

Example 102.01
cyclopropyl{4-[(2-{[6-(2,6-dimethylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

embedded image

A suspension of tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (see Compound 01.04) in dioxane (800 μl, 0.25 M), was added to 75 mg (2 eq) 4-bromo-2,6-dimethylpyridine. 600 μl aqueous potassium carbonate solution (1.0 M, 3 eq) were added and the mixture was shaken at rt for 1 h. A solution of Pd(dppf)Cl₂×CH₂Cl₂(1.0 ml, 0.040 M in dioxane, 0.2 eq) was added and the mixture was heated overnight at 140° C. in a pressure reactor. After cooling, the mixture was filtered, evaporated and treated with 2 mL TFA/DCM/water (2:1:0.1) for 3 h at rt. After vacuum evaporation the residue was treated with cyclopropanecarboxylic acid (600 μl, 1.0 M in NMP, 3 eq), NMM (400 μl, 3.0 M in NMP, 6 eq) and HATU (1.2 ml, 0.50 M in NMP, 3 eq), shaken overnight at rt, filtered and subjected to standard reversed-phase preparative HPLC to yield 17.8 mg (18%) of the title compound cyclopropyl{4-[(2-{[6-(2,6-dimethylpyridin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone.

LC-MS (Method 4): R_t=1.1.08 min; MS (ESIpos): m/z=483 [M+H]⁺.

The following examples shown in Table 10 below were prepared in analogy to example 102.01 using the appropriate aryl bromide and carboxylic acid derivative:

TABLE 10

LC-MS

method

Retention

time

Ex-
Structure
Mass

ample
IUPAC-Name
found

103.01

embedded image

4-{2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1- yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6- yl}pyridine-3-carbonitrile
Method 4 1.01 480

104.01

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(2-methylthieno[2,3- d]pyrimidin-4-yl)-1H-benzimidazol-2- yl]amino}pyridin-4-yl)methyl]piperazin-1- yl}propan-1-one
Method 4 1.16 568

105.01

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(thieno[2,3-d]pyrimidin- 4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4- yl)methyl]piperazin-1-yl}propan-1-one
Method 4 1.11 554

106.01

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[3- (trifluoromethyl)pyridin-4-yl]-1H-benzimidazol-2- yl}amino)pyridin-4-yl]methyl}piperazin-1- yl)propan-1-one
Method 4 1.16 565

Example 107.01.01
tert-butyl 4-{[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, see Compound 60.01) in 2-propanol (3.0 ml) in a microwave tube was added N-methylmethanamine (1.4 ml, 2.0 M in THF). The mixture was stirred at 100° C. for 30 minutes in a microwave oven. The mixture was concentrated in vacuum. Silicagel chromatography gave a solid that was triturated with warm ethanol to give 210 mg of the title compound.

LC-MS (Method 2): R_t=1.27 min; MS (ESIpos): m/z=560 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.395 (16.00), 2.345 (0.91), 2.358 (1.35), 2.370 (0.94), 3.197 (10.86), 3.332 (8.15), 3.351 (1.20), 3.371 (1.69), 6.919 (0.52), 6.931 (0.53), 7.169 (0.57), 8.251 (0.74), 8.263 (0.69), 8.325 (3.02).

Example 107.01.02
cyclopropyl(4-{[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of crude 6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 107.01.01) in DMF (1.7 mL) was added sodium bicarbonate (81.5 mg), cyclopropanecarboxylic acid (20 μl, 95% purity) and HATU (98.4 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Aminophase-silicagel chromatography gave a solid that was triturated with ether to give 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.07 min; MS (ESIpos): m/z=528 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.676 (0.69), 0.683 (1.47), 0.697 (0.81), 0.703 (1.76), 0.708 (1.54), 0.713 (1.61), 0.721 (1.54), 0.725 (1.72), 0.732 (0.80), 1.952 (0.40), 1.964 (0.63), 2.364 (0.80), 2.446 (0.88), 2.523 (0.66), 3.198 (16.00), 3.331 (8.10), 3.521 (3.32), 3.705 (0.74), 6.936 (0.93), 6.948 (0.93), 7.188 (1.16), 8.260 (1.24), 8.273 (1.14), 8.325 (3.92), 10.704 (0.52).

Example 107.01.03
1-(4-{[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of crude 6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 107.01.01) in DMF (2.7 mL) was added sodium bicarbonate (109 mg), 3,3,3-trifluoropropanoic acid (21 μl) and HATU (98.4 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 45.0 mg of the title compound.

LC-MS (Method 2): R_t=1.09 min; MS (ESIpos): m/z=570 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.369 (0.64), 2.382 (0.95), 2.394 (0.71), 2.411 (0.68), 2.423 (0.92), 2.434 (0.69), 2.518 (0.49), 3.197 (16.00), 3.372 (2.11), 3.459 (0.67), 3.472 (0.90), 3.483 (0.76), 3.496 (0.77), 3.521 (2.97), 3.609 (0.43), 3.636 (1.23), 3.664 (1.14), 6.926 (0.74), 6.939 (0.74), 7.183 (0.94), 8.258 (1.00), 8.271 (0.93), 8.325 (4.61).

Example 107.02.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or S)-1-(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (140 mg, see Example 83.01) in 2-propanol (5.0 ml) in a microwave tube was added N-methylmethanamine (620 μl, 2.0 M in THF). The mixture was stirred at 100° C. for 30 minutes in a microwave oven. The mixture was concentrated in vacuum. Aminophase-silicagel chromatography gave 135 mg of the title compound.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=574 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.278 (0.77), 1.295 (0.79), 1.376 (7.45), 1.394 (16.00), 2.518 (0.75), 2.522 (0.48), 3.197 (5.52), 3.377 (0.54), 8.324 (1.84).

Example 107.02.02
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (90.0 mg, see Compound 107.02.01) in DMF (0.84 mL) was added sodium bicarbonate (77.8 mg), cyclopropanecarboxylic acid (19 μl, 95% purity) and HATU (94 mg). The mixture was stirred at r.t. for 16 h. Water was added, the mixture was stirred for 15 minutes and filtered. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=542 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.656 (0.51), 0.663 (1.20), 0.667 (0.73), 0.676 (0.57), 0.682 (1.45), 0.686 (1.22), 0.691 (1.33), 0.698 (1.17), 0.703 (1.39), 0.710 (0.64), 1.298 (2.28), 1.315 (2.34), 1.935 (0.52), 2.327 (0.47), 2.518 (1.18), 2.523 (0.81), 3.197 (16.00), 3.371 (7.49), 3.450 (0.81), 3.466 (1.06), 3.676 (0.55), 6.941 (0.72), 6.954 (0.73), 8.251 (1.07), 8.264 (1.02), 8.322 (4.67).

Example 107.02.03
1-(4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Aminophase-silicagel chromatography gave a solid that was triturated with a mixture of dichloromethane and cyclohexane to give 45 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=584 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.287 (2.69), 1.303 (2.69), 1.389 (12.44), 2.323 (0.69), 2.339 (0.68), 2.349 (0.63), 2.362 (0.55), 2.414 (0.75), 2.424 (0.80), 2.452 (0.50), 3.193 (16.00), 3.327 (7.92), 3.433 (1.44), 3.443 (1.12), 3.461 (1.39), 3.477 (1.87), 3.575 (0.51), 3.602 (1.44), 3.630 (1.36), 3.657 (0.44), 6.938 (0.87), 6.951 (0.89), 7.160 (0.99), 8.258 (1.14), 8.271 (1.11), 8.320 (3.88), 10.685 (0.49).

Example 107.02.04
(4-{(1R or 1S)-1-[2-({6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

To a stirred solution of 6-[6-(dimethylamino)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (40.0 mg, see Compound 107.02.01) in DMF (0.4 mL) was added sodium bicarbonate (46.1 mg), 1-(trifluoromethyl)cyclopropanecarboxylic acid (15.9 mg) and HATU (41.7 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Aminophase-silicagel chromatography gave 20 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=610 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.161 (0.77), 1.255 (0.46), 1.266 (0.96), 1.288 (1.74), 1.305 (1.60), 1.395 (16.00), 2.327 (0.46), 2.332 (0.41), 2.518 (1.52), 2.522 (0.99), 3.198 (12.27), 3.380 (1.06), 3.449 (0.41), 3.466 (0.41), 3.570 (0.51), 5.758 (0.74), 6.946 (0.46), 6.960 (0.47), 8.261 (0.59), 8.274 (0.56), 8.324 (4.03).

Example 108.01
tert-butyl 4-{[2-({6-[6-(cyclopropylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (300 mg, see Compound 60.01) in 2-propanol (3.0 ml) in a microwave tube was added cyclopropanamine (190 μl). The mixture was stirred at 100° C. for 1 h in a microwave oven. Further cyclopropanamine (95 μl) and the mixture was stirred at 100° C. for 16 h. The mixture was concentrated in vacuum. Aminophase-silicagel chromatography gave 285 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=572 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.609 (0.58), 0.615 (0.74), 0.624 (0.81), 0.712 (0.65), 0.719 (0.68), 0.730 (0.78), 1.394 (16.00), 2.346 (1.02), 2.358 (1.45), 2.369 (1.01), 2.518 (0.73), 2.522 (0.49), 3.428 (0.97), 3.498 (1.76), 5.758 (3.78), 6.916 (0.52), 6.929 (0.54), 7.170 (0.92), 7.310 (0.62), 7.320 (0.59), 8.256 (0.86), 8.268 (0.80), 8.307 (1.86).

Example 108.02
1-(4-{[2-({6-[6-(cyclopropylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of crude 6-[6-(cyclopropylamino)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, see Compound 108.01) in DMF (4.9 mL) was added sodium bicarbonate (154 mg), 3,3,3-trifluoropropanoic acid (22 μl) and HATU (113 mg). The mixture was stirred at r.t. for 3 h. Water was added, the mixture was stirred for 16 h. A saturated sodium chloride solution was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.02 min; MS (ESIpos): m/z=582 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.597 (1.37), 0.610 (4.04), 0.616 (5.07), 0.625 (6.22), 0.635 (2.09), 0.664 (0.71), 0.682 (0.40), 0.702 (2.02), 0.713 (4.64), 0.719 (4.92), 0.731 (5.70), 0.735 (3.85), 0.749 (1.50), 1.224 (0.54), 2.327 (0.45), 2.369 (3.03), 2.381 (4.59), 2.393 (3.47), 2.409 (3.01), 2.421 (4.29), 2.432 (3.42), 2.518 (1.60), 2.523 (1.14), 2.810 (0.51), 2.819 (1.38), 2.828 (1.72), 2.837 (2.92), 2.846 (2.89), 2.855 (1.83), 2.864 (1.34), 2.874 (0.47), 3.392 (1.18), 3.427 (9.18), 3.458 (3.28), 3.471 (4.16), 3.482 (3.71), 3.495 (3.80), 3.520 (14.20), 3.608 (1.98), 3.635 (5.49), 3.663 (5.16), 3.691 (1.63), 4.047 (2.97), 6.924 (3.48), 6.927 (3.34), 6.937 (3.49), 6.940 (3.40), 7.186 (6.01), 7.312 (4.55), 7.321 (4.43), 7.399 (0.62), 7.808 (0.69), 8.227 (0.72), 8.262 (5.77), 8.276 (5.37), 8.310 (16.00), 10.699 (0.58).

Example 108.03
cyclopropyl(4-{[2-({6-[6-(cyclopropylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of crude 6-[6-(cyclopropylamino)-5-methoxypyrimidin-4-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (140 mg, see Compound 108.01) in DMF (1.2 mL) was added sodium bicarbonate (154 mg), cyclopropanecarboxylic acid (21 μl, 95% purity) and HATU (113 mg). The mixture was stirred at r.t. for 16 h. Water was added, the mixture was stirred for 24 h. A saturated sodium chloride solution was added and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 50.0 mg of the title compound.

LC-MS (Method 2): R_t=0.98 min; MS (ESIpos): m/z=540 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.597 (0.69), 0.607 (1.57), 0.610 (1.96), 0.615 (2.43), 0.625 (3.04), 0.635 (1.05), 0.658 (0.52), 0.663 (0.61), 0.670 (1.36), 0.677 (2.83), 0.682 (1.94), 0.689 (1.45), 0.697 (3.39), 0.701 (2.71), 0.705 (2.19), 0.711 (4.85), 0.718 (5.09), 0.722 (4.11), 0.730 (4.28), 0.733 (2.25), 0.742 (0.66), 0.748 (0.78), 1.932 (0.70), 1.940 (0.75), 1.952 (1.24), 1.964 (0.70), 1.971 (0.65), 2.359 (1.37), 2.436 (1.38), 2.518 (0.58), 2.523 (0.42), 2.819 (0.61), 2.828 (0.78), 2.837 (1.26), 2.846 (1.25), 2.855 (0.82), 2.864 (0.57), 3.427 (16.00), 3.513 (6.31), 3.696 (1.30), 6.925 (1.79), 6.928 (1.75), 6.939 (1.79), 6.941 (1.79), 7.224 (1.46), 7.311 (2.00), 7.320 (1.93), 7.440 (0.52), 7.459 (0.55), 7.772 (0.86), 7.792 (0.77), 8.260 (2.85), 8.273 (2.69), 8.311 (8.63).

Example 109.01.01
tert-butyl 4-({2-[(6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (350 mg, see Compound 60.01) in 2-propanol (2.0 ml) in a microwave tube was added 1-cyclopropylmethanamine (280 μl). The mixture was stirred at 100° C. for 1.5 h in a microwave oven. A half-saturated ammonium chloride solution was added and the reaction mixture was extracted with dichloromethane. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with pentane to give 95 mg of the title compound.

LC-MS (Method 2): R_t=1.28 min; MS (ESIpos): m/z=586 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.266 (0.80), 0.270 (0.75), 0.279 (0.86), 0.416 (0.70), 0.421 (0.69), 0.436 (0.74), 0.440 (0.67), 0.830 (0.69), 0.836 (0.45), 0.839 (0.42), 0.852 (0.55), 0.857 (1.01), 0.935 (0.47), 0.953 (0.49), 1.237 (0.49), 1.396 (16.00), 2.349 (0.86), 2.361 (1.28), 2.373 (0.91), 2.518 (0.92), 2.523 (0.64), 3.271 (0.58), 3.287 (1.00), 3.302 (0.61), 3.331 (9.86), 3.352 (1.05), 3.500 (1.67), 6.920 (0.50), 6.933 (0.51), 7.172 (0.87), 7.328 (0.55), 8.241 (2.06), 8.259 (0.90), 8.272 (0.81).

Example 109.01.02
1-[4-({2-[(6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of 6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (90.0 mg, see Compound 109.01.01) in DMF (3.3 mL) was added sodium bicarbonate (102 mg), 3,3,3-trifluoropropanoic acid (20 μl) and HATU (92.0 mg). The mixture was stirred at r.t. for 65 h. Water was added, the mixture was stirred for 15 minutes and the mixture was extracted with ethyl acetate. The organic phase was dried (sodium sulfate) and the solvent was removed in vacuum. Silicagel chromatography gave a solid that was triturated with ethanol to give 30.0 mg of the title compound.

LC-MS (Method 2): R_t=1.12 min; MS (ESIpos): m/z=596 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.255 (1.57), 0.267 (6.27), 0.271 (5.81), 0.279 (6.68), 0.292 (2.26), 0.407 (2.14), 0.416 (5.54), 0.421 (5.36), 0.427 (2.96), 0.432 (2.80), 0.436 (5.88), 0.441 (5.33), 0.452 (1.80), 1.122 (0.66), 1.142 (1.46), 1.154 (2.05), 1.166 (1.21), 1.171 (1.25), 1.396 (0.59), 2.373 (3.33), 2.385 (5.04), 2.397 (3.85), 2.414 (3.69), 2.425 (4.95), 2.437 (3.69), 2.518 (7.27), 2.523 (4.92), 3.271 (4.38), 3.287 (7.52), 3.303 (4.49), 3.483 (10.46), 3.512 (5.45), 3.525 (15.13), 3.611 (2.32), 3.638 (6.77), 3.666 (6.40), 3.693 (2.01), 6.931 (3.85), 6.944 (3.92), 7.186 (6.50), 7.312 (2.10), 7.327 (4.44), 7.342 (2.05), 7.378 (0.91), 7.398 (1.05), 7.552 (0.52), 7.747 (0.55), 7.823 (1.00), 7.842 (0.89), 8.000 (0.80), 8.241 (16.00), 8.267 (6.66), 8.280 (6.13), 10.696 (1.64), 12.189 (1.30), 12.213 (2.14).

Example 109.01.03
cyclopropyl[4-({2-[(6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]methanone

embedded image

To a stirred solution of crude 6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (170 mg, see Compound 109.01.01) in DMF (1.3 mL) was added sodium bicarbonate (125 mg), cyclopropanecarboxylic acid (31 μl, 95% purity) and HATU (151 mg). The mixture was stirred at r.t. for 65 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. The solid was dissolved in ethyl acetate and the solution was filtered and concentrated in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=554 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.249 (1.58), 0.260 (6.60), 0.264 (6.06), 0.273 (7.18), 0.286 (2.31), 0.399 (2.02), 0.409 (5.61), 0.413 (5.33), 0.419 (3.03), 0.429 (5.98), 0.433 (5.38), 0.444 (1.75), 0.651 (1.09), 0.662 (2.97), 0.670 (5.79), 0.674 (4.49), 0.683 (3.36), 0.690 (6.72), 0.707 (6.01), 0.714 (6.69), 0.718 (7.32), 0.725 (4.00), 0.737 (1.07), 1.112 (0.51), 1.117 (0.71), 1.129 (1.33), 1.132 (1.36), 1.137 (1.40), 1.141 (1.17), 1.149 (2.15), 1.157 (1.18), 1.161 (1.31), 1.166 (1.34), 1.178 (0.66), 1.186 (0.48), 1.909 (0.72), 1.922 (1.51), 1.929 (1.74), 1.942 (2.69), 1.953 (1.61), 1.960 (1.44), 1.972 (0.67), 2.352 (3.50), 2.428 (3.51), 2.518 (0.96), 3.268 (4.48), 3.283 (7.82), 3.299 (4.65), 3.347 (11.60), 3.505 (15.47), 3.687 (3.30), 6.923 (4.21), 6.936 (4.30), 7.195 (6.46), 7.306 (2.18), 7.322 (4.56), 7.336 (2.17), 7.437 (0.69), 7.797 (1.16), 8.229 (0.63), 8.243 (16.00), 8.260 (6.74), 8.273 (6.17), 10.726 (0.62), 12.227 (0.57).

Example 109.02.01
tert-butyl 4-[(1R or 1S)-1-{2-[(6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or S)-1-(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (250 mg, see Example 83.01) in 2-propanol (10 ml) in a microwave tube was added 1-cyclopropylmethanamine (190 μl). The mixture was stirred at 100° C. for 1.5 h in a microwave oven. Further 1-cyclopropylmethanamine (200 μl) was added and the mixture was stirred at 100° C. for 2.5 h. The mixture was concentrated in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 200 mg of the title compound.

LC-MS (Method 2): R_t=1.33 min; MS (ESIpos): m/z=600 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.266 (0.91), 0.270 (0.84), 0.279 (0.96), 0.415 (0.80), 0.420 (0.77), 0.426 (0.41), 0.436 (0.84), 0.440 (0.75), 1.278 (1.76), 1.295 (1.75), 1.376 (16.00), 2.311 (0.47), 2.384 (0.48), 2.518 (0.55), 3.271 (0.71), 3.287 (1.24), 3.303 (1.07), 3.435 (0.51), 3.452 (0.62), 3.475 (1.22), 6.930 (0.55), 6.932 (0.55), 6.946 (0.56), 7.157 (0.98), 7.325 (0.65), 8.241 (2.32), 8.262 (1.01), 8.275 (0.92).

Example 109.02.02
cyclopropyl{4-[(1R or 1S)-1-{2-[(6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}methanone

embedded image

To a stirred solution of crude 6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (90.0 mg, see Compound 109.02.01) in DMF (0.75 mL) was added sodium bicarbonate (68.5 mg), cyclopropanecarboxylic acid (17 μl, 95% purity) and HATU (82.7 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=568 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.255 (1.69), 0.267 (6.34), 0.270 (5.88), 0.279 (6.79), 0.282 (6.29), 0.292 (2.44), 0.407 (2.21), 0.416 (5.60), 0.421 (5.51), 0.426 (3.07), 0.431 (2.90), 0.436 (6.01), 0.441 (5.41), 0.452 (1.90), 0.645 (0.86), 0.657 (2.72), 0.664 (6.36), 0.669 (4.00), 0.677 (3.20), 0.684 (7.78), 0.688 (6.55), 0.692 (7.37), 0.699 (6.36), 0.704 (7.37), 0.711 (3.59), 0.724 (0.91), 1.122 (0.69), 1.137 (1.38), 1.142 (1.54), 1.154 (2.29), 1.166 (1.30), 1.171 (1.30), 1.183 (0.67), 1.296 (12.04), 1.312 (12.35), 1.405 (0.50), 1.422 (0.48), 1.904 (0.76), 1.917 (1.51), 1.924 (1.64), 1.936 (2.75), 1.948 (1.58), 1.955 (1.45), 1.967 (0.67), 2.322 (2.03), 2.327 (2.38), 2.331 (1.92), 2.400 (2.12), 2.518 (10.34), 2.523 (7.35), 2.539 (8.52), 2.616 (0.45), 2.665 (0.95), 2.669 (1.34), 2.673 (0.97), 3.271 (4.50), 3.287 (7.70), 3.302 (4.78), 3.434 (1.64), 3.450 (5.66), 3.468 (10.18), 3.479 (10.05), 3.675 (2.98), 6.951 (3.83), 6.965 (3.98), 7.174 (6.77), 7.312 (2.10), 7.327 (4.50), 7.341 (2.18), 7.399 (0.86), 7.533 (0.45), 7.746 (0.48), 7.821 (0.86), 8.003 (0.58), 8.241 (16.00), 8.271 (6.90), 8.285 (6.42), 10.685 (1.04), 12.229 (1.47).

Example 109.02.03
1-{4-[(1R or 1S)-1-{2-[(6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of crude 6-{6-[(cyclopropylmethyl)amino]-5-methoxypyrimidin-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (90.0 mg, see Compound 109.02.01) in DMF (2.3 mL) was added sodium bicarbonate (68.5 mg), 3,3,3-trifluoropropanoic acid (18 μl) and HATU (82.7 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Silicagel chromatography gave 35.0 mg of the title compound.

LC-MS (Method 2): R_t=1.17 min; MS (ESIpos): m/z=610 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.255 (1.68), 0.267 (6.53), 0.279 (7.04), 0.292 (2.26), 0.407 (2.09), 0.417 (5.47), 0.421 (5.36), 0.427 (3.10), 0.436 (5.86), 0.441 (5.36), 0.452 (1.70), 1.066 (0.45), 1.154 (3.55), 1.172 (4.05), 1.189 (1.87), 1.229 (0.59), 1.294 (12.03), 1.310 (12.01), 1.394 (1.93), 1.987 (5.33), 2.331 (3.63), 2.345 (3.04), 2.369 (2.40), 2.430 (3.55), 2.669 (1.70), 2.728 (1.03), 2.888 (1.12), 3.271 (4.58), 3.287 (8.01), 3.303 (5.11), 3.438 (6.81), 3.451 (5.98), 3.474 (16.00), 3.565 (2.99), 3.580 (2.29), 3.608 (6.31), 3.635 (6.03), 3.662 (1.98), 3.999 (0.42), 4.017 (1.23), 4.035 (1.23), 4.053 (0.42), 5.758 (3.91), 6.944 (4.02), 6.957 (4.08), 7.165 (6.65), 7.316 (1.93), 7.331 (3.94), 7.346 (2.07), 7.398 (0.75), 7.821 (0.87), 8.242 (14.27), 8.271 (6.39), 8.285 (5.84), 10.678 (2.21), 12.222 (1.73).

Example 110.01
tert-butyl 4-({2-[(6-{6-[(cyclopropyl}methyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-ylmethyl)piperazine-1-carboxylate

embedded image

LC-MS (Method 2): R_t=1.42 min; MS (ESIpos): m/z=600 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.267 (0.75), 0.271 (0.69), 0.280 (0.78), 0.283 (0.71), 0.469 (0.66), 0.473 (0.65), 0.489 (0.68), 0.493 (0.64), 1.066 (0.61), 1.070 (0.99), 1.088 (2.14), 1.105 (1.13), 1.395 (16.00), 2.347 (0.84), 2.359 (1.20), 2.371 (0.83), 2.518 (0.86), 2.522 (0.63), 3.242 (4.19), 3.353 (2.21), 3.371 (1.33), 3.388 (1.00), 3.499 (1.51), 3.547 (0.90), 3.565 (0.88), 6.917 (0.46), 6.920 (0.45), 6.930 (0.45), 8.250 (0.72), 8.264 (0.63), 8.325 (4.23).

Example 110.02
cyclopropyl[4-({2-[(6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]methanone

embedded image

To a stirred solution of crude 6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, see Compound 110.01) in DMF (1.0 mL) was added sodium bicarbonate (93.6 mg), cyclopropanecarboxylic acid (23 μl, 95% purity) and HATU (113 mg). The mixture was stirred at r.t. for 65 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. The solid was dissolved in ethyl acetate and the solution was filtered and concentrated in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.21 min; MS (ESIpos): m/z=568 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.266 (1.42), 0.269 (1.34), 0.278 (1.54), 0.292 (0.50), 0.458 (0.46), 0.468 (1.24), 0.472 (1.23), 0.478 (0.65), 0.483 (0.62), 0.488 (1.30), 0.492 (1.24), 0.503 (0.42), 0.675 (0.62), 0.682 (1.45), 0.687 (0.90), 0.695 (0.70), 0.702 (1.72), 0.707 (1.34), 0.712 (1.51), 0.720 (1.47), 0.724 (1.76), 0.731 (0.83), 1.121 (0.47), 1.962 (0.64), 2.364 (0.70), 2.444 (0.72), 2.518 (0.83), 2.523 (0.56), 3.337 (16.00), 3.355 (6.48), 3.519 (3.33), 3.546 (1.85), 3.563 (1.78), 3.704 (0.67), 6.933 (0.91), 6.936 (0.91), 6.946 (0.93), 6.949 (0.92), 7.203 (0.74), 8.259 (1.46), 8.272 (1.38), 8.326 (5.80).

Example 110.03
[4-({2-[(6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl][1-(trifluoromethyl)cyclopropyl]methanone

embedded image

To a stirred solution of crude 6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, see Compound 110.01) in DMF (1.0 mL) was added sodium bicarbonate (125 mg), 1-(trifluoromethyl)cyclopropanecarboxylic acid (42.9 mg) and HATU (113 mg). The mixture was stirred at r.t. for 65 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. The solid was dissolved in ethyl acetate and the solution was filtered and concentrated in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 75.0 mg of the title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=636 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.256 (0.78), 0.267 (2.93), 0.271 (2.68), 0.280 (3.09), 0.293 (0.99), 0.459 (0.94), 0.469 (2.55), 0.473 (2.48), 0.479 (1.31), 0.484 (1.27), 0.489 (2.62), 0.493 (2.43), 0.504 (0.78), 1.105 (0.58), 1.110 (0.60), 1.122 (0.97), 1.135 (0.58), 1.142 (0.62), 1.182 (2.75), 1.237 (0.47), 1.275 (1.62), 1.287 (3.29), 1.307 (1.03), 2.423 (3.36), 2.518 (1.72), 2.523 (1.23), 2.539 (0.70), 3.242 (16.00), 3.358 (4.70), 3.522 (5.97), 3.547 (3.85), 3.565 (4.10), 3.596 (1.85), 6.929 (1.76), 6.945 (1.80), 7.181 (1.24), 7.392 (0.41), 7.744 (0.42), 8.193 (0.57), 8.259 (2.59), 8.272 (2.41), 8.326 (12.94), 10.708 (0.64), 12.253 (0.74).

Example 110.04
1-[4-({2-[(6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of crude 6-{6-[(cyclopropylmethyl)(methyl)amino]-5-methoxypyrimidin-4-yl}-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine hydrochloride (130 mg, see Compound 110.01) in DMF (4.0 mL) was added sodium bicarbonate (125 mg), 3,3,3-trifluoropropanoic acid (25 μl) and HATU (113 mg). The mixture was stirred at r.t. for 65 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. The solid was dissolved in ethyl acetate and the solution was filtered and concentrated in vacuum. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=610 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.250 (0.76), 0.262 (2.99), 0.265 (2.85), 0.274 (3.25), 0.287 (1.03), 0.454 (0.92), 0.464 (2.56), 0.468 (2.54), 0.474 (1.38), 0.479 (1.33), 0.484 (2.71), 0.488 (2.56), 0.499 (0.81), 1.099 (0.60), 1.104 (0.61), 1.117 (0.96), 1.125 (0.51), 1.129 (0.57), 1.134 (0.59), 2.368 (1.56), 2.380 (2.40), 2.392 (1.85), 2.407 (1.70), 2.420 (2.32), 2.431 (1.77), 2.518 (0.67), 2.523 (0.43), 3.237 (16.00), 3.458 (1.65), 3.470 (2.29), 3.481 (1.95), 3.497 (2.01), 3.516 (7.52), 3.542 (3.75), 3.559 (3.57), 3.608 (1.07), 3.635 (2.96), 3.662 (2.82), 3.690 (0.91), 4.046 (0.58), 6.924 (1.83), 6.925 (1.82), 6.939 (1.89), 7.187 (2.13), 8.258 (2.75), 8.271 (2.59), 8.328 (10.84), 10.725 (0.57).

Example 111.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(azetidin-1-yl)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=586 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.277 (1.73), 1.294 (1.73), 1.376 (16.00), 2.296 (0.41), 2.311 (0.55), 2.323 (0.50), 2.331 (0.64), 2.351 (0.64), 2.371 (0.70), 2.383 (0.55), 2.518 (0.87), 2.523 (0.60), 3.409 (1.22), 3.433 (0.52), 3.450 (0.46), 4.208 (0.88), 4.227 (1.47), 4.245 (0.85), 5.759 (4.15), 6.932 (0.54), 6.946 (0.55), 7.149 (0.52), 8.252 (0.88), 8.265 (0.75), 8.277 (2.92).

Example 111.02
(4-{(1R or 1S)-1-[2-({6-[6-(azetidin-1-yl)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

To a stirred solution of 6-[6-(azetidin-1-yl)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 111.01) in DMF (2.0 mL) was added sodium bicarbonate (76.2 mg), cyclopropanecarboxylic acid (19 μl, 95% purity) and HATU (92.0 mg). The mixture was stirred at r.t. for 16 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=554 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.641 (0:66), 0.653 (1.96), 0.660 (4.31), 0.665 (3.08), 0.673 (2.42), 0.679 (5.21), 0.684 (4.77), 0.689 (5.09), 0.696 (4.68), 0.701 (5.34), 0.708 (2.73), 0.720 (0.67), 1.288 (8.19), 1.305 (8.47), 1.895 (0.52), 1.908 (1.04), 1.914 (1.20), 1.927 (1.89), 1.939 (1.14), 1.946 (1.02), 1.958 (0.48), 2.309 (1.73), 2.327 (3.08), 2.347 (3.87), 2.367 (3.36), 2.385 (2.38), 2.444 (1.31), 2.611 (2.50), 3.402 (10.90), 3.425 (1.65), 3.442 (3.21), 3.459 (4.31), 3.668 (2.33), 4.205 (4.58), 4.224 (7.78), 4.242 (4.57), 6.947 (2.80), 6.960 (2.85), 7.166 (3.38), 7.388 (0.77), 7.397 (0.74), 7.685 (0.41), 7.792 (0.67), 8.247 (0.94), 8.260 (4.27), 8.276 (16.00), 8.281 (2.76), 10.709 (0.73), 12.263 (0.75).

Example 111.03
1-(4-{(1R or 1S)-1-[2-({6-[6-(azetidin-1-yl)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of 6-[6-(azetidin-1-yl)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 111.01) in DMF (2.0 mL) was added sodium bicarbonate (76.2 mg), 3,3,3-trifluoropropanoic acid (20 μl) and HATU (92.0 mg). The mixture was stirred at r.t. for 16 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=596 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.287 (5.08), 1.303 (5.19), 2.327 (2.64), 2.346 (3.39), 2.365 (2.69), 2.426 (1.69), 3.401 (16.00), 3.422 (2.80), 3.434 (3.50), 3.445 (2.77), 3.465 (3.33), 3.480 (3.91), 3.576 (1.00), 3.603 (2.63), 3.630 (2.49), 3.658 (0.86), 4.014 (0.64), 4.206 (2.96), 4.224 (4.97), 4.242 (2.95), 6.943 (1.83), 6.956 (1.86), 7.164 (3.03), 7.436 (0.76), 7.455 (0.85), 7.765 (1.22), 7.785 (1.12), 8.152 (0.55), 8.262 (2.62), 8.279 (7.81).

Example 112.01
tert-butyl 4-{(1R or S)-1-[2-({6-[5-methoxy-6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

LC-MS (Method 2): R_t=1.36 min; MS (ESIneg): m/z=598 [M−H]⁻.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.814 (1.19), 0.831 (2.77), 0.836 (1.15), 0.840 (1.22), 0.852 (1.59), 0.858 (3.23), 0.870 (0.77), 0.875 (0.98), 0.936 (1.14), 0.953 (1.19), 1.238 (1.71), 1.244 (1.64), 1.279 (2.08), 1.296 (1.91), 1.377 (16.00), 1.395 (1.40), 1.902 (0.69), 1.919 (1.86), 1.935 (0.71), 2.311 (0.48), 2.323 (0.51), 2.327 (0.54), 2.385 (0.46), 2.518 (1.25), 2.523 (0.86), 3.435 (0.45), 3.452 (0.43), 3.657 (0.70), 3.673 (1.69), 3.688 (0.67), 5.759 (0.74), 6.932 (0.54), 6.945 (0.55), 7.154 (0.50), 8.253 (0.68), 8.266 (0.65), 8.276 (3.34).

Example 112.02
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[5-methoxy-6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 6-[5-methoxy-6-(pyrrolidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (120 mg, see compound 112.01) in DMF (2.0 mL) was added sodium bicarbonate (89.4 mg), cyclopropanecarboxylic acid (22 μl, 95% purity) and HATU (108 mg). The mixture was stirred at r.t. for 16 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=568 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.630 (0.84), 0.642 (2.34), 0.649 (4.48), 0.662 (2.73), 0.669 (5.28), 0.683 (4.84), 0.690 (5.07), 0.694 (5.71), 0.701 (3.07), 0.714 (0.79), 1.031 (1.03), 1.048 (2.18), 1.066 (1.09), 1.277 (9.35), 1.293 (9.47), 1.903 (11.77), 1.910 (8.24), 1.919 (5.46), 1.941 (0.90), 2.298 (1.16), 2.322 (0.96), 2.327 (0.93), 2.380 (1.82), 2.425 (1.57), 2.605 (0.92), 3.322 (13.30), 3.393 (0.53), 3.412 (1.24), 3.428 (3.32), 3.445 (4.32), 3.460 (3.33), 3.661 (11.85), 6.934 (3.27), 6.948 (3.32), 7.168 (4.01), 7.380 (0.60), 7.392 (0.65), 7.691 (0.50), 7.752 (0.71), 8.196 (0.61), 8.255 (4.53), 8.269 (5.17), 8.272 (16.00), 10.720 (1.21), 12.259 (0.77).

Example 112.03
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[5-methoxy-6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

To a stirred solution of 6-[5-methoxy-6-(pyrrolidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (120 mg, see Compound 112.01) in DMF (2.0 mL) was added sodium bicarbonate (89.4 mg), 3,3,3-trifluoropropanoic acid (23 μl) and HATU (108 mg). The mixture was stirred at r.t. for 16 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.22 min; MS (ESIpos): m/z=610 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.035 (1.37), 1.052 (2.69), 1.070 (1.43), 1.280 (6.63), 1.297 (6.77), 1.890 (2.99), 1.907 (7.86), 1.922 (3.31), 2.307 (0.78), 2.321 (1.40), 2.333 (1.74), 2.345 (1.62), 2.359 (1.35), 2.414 (2.01), 2.423 (1.79), 2.442 (1.28), 3.326 (16.00), 3.418 (3.12), 3.430 (4.73), 3.450 (3.59), 3.468 (4.27), 3.573 (1.26), 3.601 (3.47), 3.628 (3.53), 3.666 (7.28), 4.012 (0.60), 6.933 (2.35), 6.946 (2.37), 7.167 (3.70), 7.442 (0.45), 7.734 (0.77), 8.260 (3.51), 8.278 (11.47).

Example 113.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or S)-1-(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (225 mg, see Example 83.01) in 2-propanol (9.0 ml) in a microwave tube was added 3,3-difluoroazetidine hydrochloride (516 mg) and N,N-diisopropylethylamine (690 μl). The mixture was stirred at 90° C. for 16 h. The mixture was concentrated in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 160 mg of the title compound.

LC-MS (Method 2): R_t=1.35 min; MS (ESIpos): m/z=622 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.154 (2.34), 1.172 (4.64), 1.190 (2.35), 1.278 (1.75), 1.295 (1.79), 1.377 (16.00), 1.987 (9.19), 2.297 (0.41), 2.310 (0.48), 2.322 (0.44), 2.327 (0.43), 2.385 (0.48), 2.396 (0.41), 2.518 (1.76), 2.523 (1.25), 3.437 (0.76), 3.454 (0.99), 3.469 (1.20), 3.999 (0.68), 4.017 (2.08), 4.035 (2.07), 4.053 (0.68), 4.590 (1.02), 4.622 (2.14), 4.653 (0.97), 6.938 (0.52), 6.951 (0.53), 7.149 (0.46), 8.258 (0.86), 8.271 (0.89), 8.404 (2.42).

Example 113.02
1-(4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of 6-[6-(3,3-difluoroazetidin-1-yl)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (80.0 mg, see Compound 113.01) in DMF (1.5 mL) was added sodium bicarbonate (57.5 mg), 3,3,3-trifluoropropanoic acid (15 μl) and HATU (69.4 mg). The mixture was stirred at r.t. for 3 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Silicagel chromatography gave a solid that was triturated with pentane to give 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=632 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.839 (5.09), 0.857 (11.22), 0.874 (4.50), 1.232 (3.09), 1.237 (3.03), 1.253 (2.75), 1.270 (2.91), 1.295 (9.28), 1.311 (9.09), 1.377 (2.53), 1.395 (10.84), 2.327 (3.09), 2.331 (3.03), 2.433 (2.75), 2.523 (5.81), 2.669 (1.84), 3.439 (6.00), 3.460 (16.00), 3.580 (1.97), 3.608 (5.41), 3.635 (5.19), 3.662 (1.66), 4.591 (6.28), 4.623 (12.75), 4.653 (5.75), 6.953 (3.25), 6.965 (3.22), 7.165 (4.31), 7.433 (0.53), 7.823 (0.75), 8.270 (5.28), 8.283 (5.00), 8.406 (15.00), 10.730 (1.37), 12.298 (0.78).

Example 113.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 6-[6-(3,3-difluoroazetidin-1-yl)-5-methoxypyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (80.0 mg, see Compound 113.01) in DMF (1.5 mL) was added sodium bicarbonate (57.5 mg), cyclopropanecarboxylic acid (14 μl, 95% purity) and HATU (69.4 mg). The mixture was stirred at r.t. for 3 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification.

Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.16 min; MS (ESIpos): m/z=590 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.653 (1.04), 0.660 (2.29), 0.665 (1.47), 0.672 (1.17), 0.679 (2.77), 0.684 (2.30), 0.689 (2.50), 0.697 (2.36), 0.701 (2.73), 0.708 (1.32), 1.292 (4.51), 1.309 (4.60), 1.909 (0.57), 1.916 (0.62), 1.928 (1.01), 1.940 (0.58), 1.947 (0.53), 2.318 (0.49), 2.322 (0.52), 2.326 (0.52), 2.331 (0.43), 2.394 (0.77), 2.450 (0.61), 2.518 (0.72), 2.523 (0.45), 3.429 (0.69), 3.446 (1.95), 3.458 (16.00), 3.493 (0.65), 3.668 (1.10), 4.589 (2.68), 4.620 (5.66), 4.651 (2.48), 6.942 (1.47), 6.944 (1.47), 6.955 (1.49), 6.958 (1.50), 7.247 (0.62), 7.449 (0.56), 7.468 (0.61), 7.787 (0.83), 7.807 (0.74), 8.257 (2.41), 8.271 (2.27), 8.402 (9.17).

Example 114.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(cyclobutylamino)-5-methoxypyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or S)-1-(2-{[6-(6-chloro-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (300 mg, see Example 83.01) in 2-propanol (10 ml) in a microwave tube was added cyclobutanamine (227 mg). The mixture was stirred at 90° C. for 2 h. Further cyclo butanamine (115 mg) was added and the mixture was stirred at 90° C. for 5 h. The mixture was concentrated in vacuum. Silicagel chromatography gave 320 mg of the title compound that was used without further purification.

LC-MS (Method 2): R_t=1.37 min; MS (ESIpos): m/z=600 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.989 (0.40), 1.005 (0.43), 1.278 (1.52), 1.295 (1.41), 1.370 (5.88), 1.376 (13.86), 2.248 (0.46), 2.269 (0.52), 2.277 (0.45), 2.282 (0.44), 2.295 (0.43), 2.311 (0.43), 2.322 (0.42), 2.326 (0.43), 2.385 (0.44), 2.518 (1.14), 2.522 (0.75), 3.436 (0.53), 3.452 (0.81), 3.468 (0.82), 5.758 (16.00), 6.932 (0.40), 6.946 (0.41), 7.154 (0.69), 7.378 (0.41), 8.237 (1.77), 8.260 (0.73), 8.274 (0.69).

The Example compounds in the following table 11 were synthesized in analogy to the preparation of Example 117.02, followed by purification by preparative reverse phase HPLC or silicagel chromatography.

TABLE 11

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Example
Starting materials (SM):

Example 114.02

embedded image

1-(4-{(1R or 1S)-1-[2-({6-[6-(cyclobutylamino)-5-methoxypyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.19 min; MS (ESIpos): m/z = 609.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.292 (12.16), 1.309 (12.33), 1.624

(0.80), 1.643 (1.57), 1.651 (1.31), 1.662 (1.68), 1.669 (2.85), 1.676 (1.77),

1.686 (2.70), 1.706 (1.54), 1.714 (1.51), 2.084 (0.60), 2.112 (1.99), 2.135

(3.10), 2.160 (2.22), 2.183 (0.68), 2.223 (1.17), 2.229 (1.48), 2.249 (3.27),

2.255 (2.45), 2.269 (2.85), 2.288 (1.11), 2.296 (0.91), 2.318 (1.74), 2.323

(2.19), 2.327 (3.30), 2.332 (3.25), 2.345 (2.59), 2.353 (2.42), 2.368 (2.14),

2.419 (2.76), 2.428 (2.88), 2.456 (1.79), 2.469 (1.05), 2.518 (6.95), 2.523

(4.98), 2.533 (0.80), 2.539 (2.76), 2.665 (1.20), 2.669 (1.71), 2.673 (1.22),

2.678 (0.57), 3.345 (0.80), 3.438 (7.35), 3.449 (7.54), 3.468 (11.67), 3.483

(8.97), 3.579 (2.28), 3.607 (6.46), 3.634 (6.12), 3.661 (1.91), 4.017 (0.77),

4.537 (1.08), 4.558 (2.08), 4.578 (2.02), 4.598 (1.08), 6.940 (3.59), 6.943

(3.59), 6.956 (3.67), 7.164 (5.41), 7.359 (3.44), 7.378 (3.81), 7.549 (0.54),

7.712 (0.54), 7.807 (1.02), 7.826 (0.88), 7.990 (0.80), 8.224 (1.79), 8.238

(16.00), 8.270 (6.63), 8.283 (6.23), 10.681 (1.40), 12.217 (1.85).

SM: Compound 114.01 and 3,3,3-trifluoropropanoic acid

Example 114.03

embedded image

(4-{(1R or 1S)-1-[2-({6-[6-(cyclobutylamino)-5-methoxypyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-

yl)(cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.15 min; MS (ESIpos): m/z = 567.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.645 (0.63), 0.656 (1.95), 0.664

(4.70), 0.669 (2.87), 0.677 (2.24), 0.684 (5.73), 0.691 (5.36), 0.699 (4.56),

0.703 (5.25), 0.711 (2.44), 0.724 (0.60), 1.297 (8.86), 1.313 (8.89), 1.624

(0.57), 1.643 (1.15), 1.650 (1.00), 1.662 (1.29), 1.669 (2.15), 1.676 (1.35),

1.686 (2.04), 1.713 (1.15), 1.905 (0.57), 1.917 (1.12), 1.924 (1.20), 1.936

(2.01), 1.948 (1.15), 1.955 (1.03), 1.968 (0.49), 2.084 (0.57), 2.107 (1.63),

2.113 (1.66), 2.135 (2.49), 2.160 (1.81), 2.183 (0.60), 2.223 (0.89), 2.229

(1.15), 2.248 (2.52), 2.255 (1.86), 2.269 (2.32), 2.288 (1.35), 2.295 (1.15),

2.318 (1.41), 2.322 (1.95), 2.327 (2.41), 2.332 (1.86), 2.399 (1.43), 2.518

(6.74), 2.523 (4.70), 2.539 (1.81), 2.616 (0.57), 2.665 (1.23), 2.669 (1.78),

2.673 (1.26), 3.461 (16.00), 3.677 (2.06), 4.537 (0.86), 4.557 (1.63), 4.578

(1.61), 4.598 (0.83), 6.946 (2.64), 6.960 (2.67), 7.206 (0.80), 7.355 (2.98),

7.375 (2.98), 7.772 (0.69), 8.236 (12.90), 8.265 (4.30), 8.278 (4.01), 12.230

(0.40).

SM: Compound 114.01 and cyclopropanecarboxylic acid

Example 115.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(azetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (440 mg, see Example 85.01) in 2-propanol (6.0 ml) in a microwave tube was added azetidine (235 mg). The mixture was stirred at 90° C. for 30 minutes. Upon cooling to r.t. a solid precipitated, was collected by filtration and was washed with ethanol to give 130 mg of the title compound.

LC-MS (Method 2): R_t=1.25 min; MS (ESIpos): m/z=556 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.277 (1.72), 1.293 (1.76), 1.376 (16.00), 2.308 (0.46), 2.369 (0.63), 2.386 (0.93), 2.406 (0.70), 2.518 (1.32), 2.522 (0.92), 3.433 (0.44), 3.449 (0.43), 4.079 (1.20), 4.098 (1.95), 4.116 (1.18), 6.937 (0.45), 6.950 (0.46), 7.163 (0.85), 8.254 (0.98), 8.266 (0.95), 8.492 (1.56), 8.494 (1.66).

Example 115.02
1-(4-{(1R or 1S)-1-[2-({6-[6-(azetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of 6-[6-(azetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (90.0 mg, see Compound 115.01) in DMF (1.9 mL) was added sodium bicarbonate (72.3 mg), 3,3,3-trifluoropropanoic acid (19 μl) and HATU (87.2 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Silicagel chromatography gave a solid that was triturated with ethanol to give 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=566 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.291 (14.31), 1.307 (14.45), 2.327 (4.38), 2.332 (3.76), 2.336 (3.34), 2.350 (3.86), 2.368 (5.17), 2.387 (4.86), 2.407 (4.72), 2.416 (4.21), 2.427 (4.72), 2.456 (2.17), 2.518 (10.00), 2.523 (6.52), 2.548 (0.72), 2.665 (1.48), 2.669 (2.07), 2.673 (1.48), 3.424 (3.76), 3.436 (6.76), 3.448 (4.97), 3.466 (6.93), 3.482 (8.97), 3.579 (2.66), 3.606 (7.62), 3.634 (7.14), 3.661 (2.24), 4.079 (9.93), 4.098 (16.00), 4.116 (9.52), 6.755 (2.24), 6.844 (1.41), 6.947 (3.28), 6.960 (3.34), 7.174 (6.41), 7.373 (1.24), 7.394 (1.38), 7.528 (0.79), 7.547 (0.83), 7.853 (2.21), 7.874 (1.41), 8.114 (1.38), 8.262 (7.93), 8.276 (8.07), 8.492 (13.03), 8.495 (13.86), 10.689 (1.24), 10.722 (1.97), 12.208 (1.66), 12.257 (2.48).

Example 115.03
(4-{(1R or 1S)-1-[2-({6-[6-(azetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

To a stirred solution of 6-[6-(azetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine trihydrochloride (60.0 mg, see Compound 115.01) in DMF (1.2 mL) was added sodium bicarbonate (45.5 mg), cyclopropanecarboxylic acid (11 μl, 95% purity) and HATU (54.9 mg). The mixture was stirred at r.t. for 16 h. Further sodium bicarbonate (45.5 mg), cyclopropanecarboxylic acid (11 μl, 95% purity) and HATU (54.9 mg) were added and the mixture was stirred at r.t. for 24 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 10.0 mg of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=524 [M+H]⁺.

¹H-NMR (500 MHz, DMSO-d6) δ[ppm]: 0.644 (1.40), 0.653 (3.45), 0.659 (6.53), 0.664 (5.24), 0.669 (3.49), 0.675 (7.33), 0.679 (3.66), 0.686 (4.45), 0.690 (6.54), 0.696 (7.02), 0.700 (7.79), 0.705 (4.58), 0.715 (1.21), 1.053 (0.42), 1.221 (0.45), 1.288 (14.84), 1.302 (15.06), 1.754 (0.77), 1.897 (0.93), 1.907 (1.84), 1.913 (2.01), 1.923 (3.19), 1.932 (1.84), 1.938 (1.71), 1.948 (0.81), 2.303 (1.36), 2.352 (2.23), 2.366 (4.82), 2.382 (6.73), 2.397 (5.27), 2.412 (2.69), 2.448 (1.53), 2.514 (1.28), 2.518 (1.22), 2.522 (0.98), 2.612 (0.45), 2.635 (0.43), 3.428 (1.47), 3.442 (4.50), 3.455 (5.86), 3.468 (3.94), 3.663 (3.26), 4.079 (10.01), 4.094 (16.00), 4.109 (9.56), 6.762 (0.75), 6.827 (0.47), 6.951 (3.96), 6.960 (3.97), 7.179 (7.11), 7.394 (0.58), 7.848 (2.06), 7.864 (1.89), 8.263 (8.19), 8.273 (7.77), 8.493 (13.25), 8.495 (13.53), 10.724 (1.18), 12.269 (0.83).

Example 116.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (270 mg, see Example 85.01) in 2-propanol (10 ml) in a microwave tube was added 3,3-difluoroazetidine hydrochloride (392 mg) and N,N-diisopropylethylamine (880 μl). The mixture was stirred at 90° C. for 16 h. The mixture was concentrated in vacuum. Silicagel chromatography gave 270 mg of the title compound.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=592 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.990 (1.50), 1.006 (1.45), 1.090 (0.52), 1.106 (0.50), 1.132 (0.48), 1.149 (0.49), 1.229 (0.46), 1.279 (1.69), 1.295 (1.66), 1.377 (16.00), 1.729 (0.46), 1.763 (0.45), 1.979 (0.58), 2.084 (0.42), 2.310 (0.43), 2.384 (0.41), 2.518 (0.72), 2.523 (0.48), 3.436 (0.42), 3.453 (0.41), 3.797 (0.41), 4.529 (1.04), 4.561 (2.23), 4.592 (0.97), 5.759 (2.60), 6.942 (0.41), 6.954 (0.41), 7.170 (0.68), 8.259 (0.89), 8.272 (0.84), 8.618 (1.61), 8.620 (1.61).

Example 116.02
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine trihydrochloride (100 mg, see Compound 116.01) in DMF (2.1 mL) was added sodium bicarbonate (78.8 mg), cyclopropanecarboxylic acid (20 μl, 95% purity) and HATU (95.2 mg). The mixture was stirred at r.t. for 3 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Silicagel chromatography gave a solid that was triturated with cyclopentyl methyl ether to give 50.0 mg of the title compound.

LC-MS (Method 2): R_t=1.10 min; MS (ESIpos): m/z=560 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.644 (0.81), 0.656 (2.79), 0.663 (6.29), 0.683 (7.79), 0.687 (7.07), 0.691 (7.51), 0.699 (6.67), 0.703 (7.48), 0.710 (3.66), 0.723 (0.91), 1.294 (11.64), 1.311 (11.91), 1.903 (0.70), 1.915 (1.48), 1.922 (1.67), 1.934 (2.67), 1.946 (1.58), 1.953 (1.43), 1.966 (0.64), 2.322 (1.88), 2.326 (2.01), 2.395 (2.28), 2.616 (0.68), 2.668 (0.92), 2.673 (0.72), 3.144 (1.45), 3.434 (1.42), 3.450 (4.31), 3.467 (5.75), 3.674 (3.18), 4.530 (7.67), 4.561 (16.00), 4.592 (7.16), 6.960 (3.30), 6.972 (3.34), 7.032 (1.18), 7.134 (0.86), 7.186 (5.09), 7.415 (0.83), 7.554 (0.59), 7.884 (2.83), 7.903 (2.61), 8.164 (0.81), 8.268 (6.18), 8.281 (5.84), 8.330 (1.11), 8.618 (10.05), 8.621 (10.38), 10.739 (1.42), 12.245 (1.10), 12.304 (1.45).

Example 116.03
1-(4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

To a stirred solution of 6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 116.01) in DMF (2.1 mL) was added sodium bicarbonate (78.8 mg), 3,3,3-trifluoropropanoic acid (21 μl) and HATU (95.2 mg). The mixture was stirred at r.t. for 3 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Silicagel chromatography followed by aminophase-silicagel chromatography gave a solid that was triturated with a mixture of 2-propanol and cyclohexane to give 53.0 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=602 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.027 (0.71), 1.042 (0.71), 1.292 (5.91), 1.308 (6.02), 1.394 (16.00), 2.327 (1.71), 2.343 (1.69), 2.365 (1.35), 2.417 (1.81), 2.428 (2.11), 2.442 (1.67), 2.457 (1.42), 2.669 (0.51), 3.437 (3.34), 3.448 (2.54), 3.468 (3.52), 3.483 (4.27), 3.579 (1.11), 3.606 (3.10), 3.634 (2.96), 3.661 (0.97), 4.530 (3.85), 4.561 (7.84), 4.592 (3.66), 6.951 (1.61), 6.963 (1.62), 7.031 (0.96), 7.137 (0.73), 7.180 (2.33), 7.400 (0.56), 7.419 (0.61), 7.553 (0.42), 7.571 (0.44), 7.882 (1.37), 7.903 (1.24), 8.163 (0.68), 8.267 (2.92), 8.280 (2.77), 8.331 (0.91), 8.620 (4.81), 10.712 (0.63), 10.744 (0.81), 12.240 (0.80), 12.300 (1.03).

Example 116.04
(4-{(1R or 1S)-1-[2-({6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

To a stirred solution of 6-[6-(3,3-difluoroazetidin-1-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (80.0 mg, see Compound 116.01) in DMF (1.7 mL) was added sodium bicarbonate (63.1 mg), 1-(trifluoromethyl)cyclopropanecarboxylic acid (28.9 mg) and HATU (76.1 mg). The mixture was stirred at r.t. for 3 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 55.0 mg of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=628 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.161 (5.70), 1.215 (0.89), 1.228 (0.54), 1.255 (3.26), 1.267 (7.13), 1.288 (12.83), 1.304 (11.49), 2.323 (1.40), 2.327 (2.16), 2.332 (1.99), 2.342 (1.99), 2.356 (2.40), 2.370 (2.79), 2.453 (2.85), 2.465 (2.61), 2.518 (4.58), 2.523 (3.15), 2.539 (9.98), 2.665 (0.84), 2.669 (1.23), 2.673 (0.89), 3.434 (0.89), 3.451 (2.85), 3.468 (2.83), 3.483 (0.97), 3.568 (3.93), 4.530 (7.51), 4.561 (16.00), 4.592 (6.80), 6.956 (2.55), 6.969 (2.61), 7.031 (1.60), 7.137 (1.14), 7.185 (4.08), 7.398 (0.89), 7.419 (0.95), 7.553 (0.67), 7.574 (0.69), 7.882 (2.18), 7.903 (1.92), 8.161 (1.10), 8.266 (6.11), 8.279 (5.79), 8.332 (1.51), 8.618 (11.90), 8.621 (11.88), 10.708 (0.89), 10.745 (1.17), 12.242 (1.17), 12.300 (1.58).

Example 117.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (300 mg, 561 μmol, see Example 85.01) in 2-propanol (10 ml) in a microwave tube was added pyrrolidine (280 μl). The mixture was stirred at 90° C. for 2 h. The mixture was concentrated in vacuum. Silicagel chromatography gave 250 mg of the title compound.

LC-MS (Method 2): R_t=1.31 min; MS (ESIpos): m/z=570 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.814 (0.76), 0.830 (1.79), 0.835 (0.64), 0.849 (0.73), 0.852 (0.77), 0.858 (0.68), 0.935 (0.51), 0.952 (0.54), 1.237 (0.44), 1.278 (1.73), 1.295 (1.72), 1.377 (16.00), 1.394 (0.85), 1.971 (0.59), 2.310 (0.44), 2.383 (0.44), 2.518 (0.64), 2.523 (0.44), 3.434 (0.45), 3.450 (0.47), 3.513 (0.62), 6.936 (0.49), 6.949 (0.44), 7.165 (0.89), 8.255 (0.94), 8.268 (0.89), 8.499 (1.63), 8.501 (1.60).

Example 117.02
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 117.01) in DMF (2.3 mL) was added sodium bicarbonate (87.1 mg), cyclopropanecarboxylic acid (22 μl, 95% purity) and HATU (105 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 60.0 mg of the title compound.

LC-MS (Method 2): R_t=1.11 min; MS (ESIpos): m/z=538 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.642 (1.07), 0.653 (3.40), 0.661 (7.84), 0.666 (4.96), 0.674 (3.83), 0.681 (9.45), 0.686 (7.82), 0.690 (8.55), 0.698 (8.00), 0.702 (9.33), 0.709 (4.53), 0.722 (1.10), 1.069 (0.49), 1.225 (0.98), 1.291 (15.58), 1.307 (15.85), 1.409 (0.48), 1.897 (1.30), 1.909 (2.50), 1.917 (2.83), 1.929 (4.86), 1.934 (3.43), 1.941 (4.36), 1.948 (5.14), 1.960 (5.77), 2.318 (1.58), 2.323 (1.79), 2.327 (1.86), 2.332 (1.50), 2.390 (2.47), 2.450 (1.86), 2.518 (3.62), 2.523 (2.53), 2.540 (0.67), 2.665 (0.60), 2.669 (0.80), 2.674 (0.58), 3.428 (1.92), 3.444 (5.59), 3.461 (7.82), 3.477 (6.05), 3.509 (6.32), 3.669 (3.74), 6.868 (1.30), 6.920 (0.89), 6.952 (4.35), 6.964 (4.35), 7.183 (8.57), 7.403 (0.82), 7.544 (0.55), 7.865 (1.97), 8.137 (0.70), 8.264 (8.82), 8.277 (8.54), 8.299 (1.15), 8.499 (15.76), 8.502 (16.00), 10.710 (1.59), 12.216 (0.91), 12.257 (1.27).

Example 117.03
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

To a stirred solution of N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-amine hydrochloride (100 mg, see Compound 117.01) in DMF (2.3 mL) was added sodium bicarbonate (87.1 mg), 3,3,3-trifluoropropanoic acid (23 μl) and HATU (105 mg). The mixture was stirred at r.t. for 16 h. An excess of water was added and the mixture was stirred for 15 minutes. A solid precipitated and was collected by filtration.

Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 25.0 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=580 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.225 (0.69), 1.289 (15.12), 1.306 (15.29), 1.908 (0.87), 1.969 (5.59), 2.301 (0.81), 2.327 (3.36), 2.332 (2.84), 2.341 (3.28), 2.351 (3.08), 2.364 (2.67), 2.416 (3.51), 2.426 (3.77), 2.438 (2.86), 2.453 (2.20), 2.518 (3.32), 2.523 (2.30), 2.540 (2.86), 2.665 (0.56), 2.669 (0.80), 2.674 (0.55), 3.423 (4.20), 3.435 (7.28), 3.446 (5.80), 3.463 (7.71), 3.480 (11.72), 3.494 (8.33), 3.578 (3.11), 3.605 (7.94), 3.632 (7.36), 3.660 (2.35), 4.015 (1.68), 6.869 (1.34), 6.919 (0.97), 6.944 (4.34), 6.957 (4.23), 7.178 (8.19), 7.401 (0.85), 7.537 (0.57), 7.865 (2.03), 8.136 (0.74), 8.264 (8.47), 8.277 (8.22), 8.297 (1.16), 8.499 (15.22), 8.502 (16.00), 10.710 (1.55), 12.214 (0.92), 12.251 (1.29).

The Example compounds in the following table 12 were synthesized in analogy to the preparation of Example 117.02, followed by purification by preparative reverse phase HPLC or silicagel chromatography.

TABLE 12

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Example
Starting materials (SM):

Example 117.04

embedded image

(4-{(1R or 1S)-1-[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.2 min; MS (ESIneg): m/z = 604 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.155 (7.52), 1.210 (1.07), 1.250

(4.04), 1.262 (9.32), 1.280 (16.00), 1.296 (14.34), 1.325 (0.57), 1.963 (5.51),

2.333 (2.75), 2.348 (3.23), 2.361 (3.73), 2.443 (3.77), 2.456 (3.26), 2.472

(2.66), 2.518 (1.25), 2.523 (0.86), 3.419 (2.63), 3.436 (5.06), 3.453 (5.18),

3.470 (3.41), 3.506 (6.35), 3.558 (6.21), 6.886 (7.37), 6.937 (4.90), 6.939

(4.86), 6.950 (4.87), 6.952 (4.86), 7.226 (3.99), 7.450 (1.82), 7.470 (1.92),

7.856 (4.54), 7.861 (4.50), 7.878 (3.94), 7.882 (4.04), 8.230 (2.71), 8.257

(8.34), 8.270 (7.49), 8.499 (12.90), 8.501 (13.02).

SM: Compound 117.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 117.05

embedded image

((1RS)-2,2-difluorocyclopropyl)(4-{(1R or 1S)-1-[2-({6-[6-(pyrrolidin-1-

yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-

yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 573.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.290 (15.79), 1.307 (16.00), 1.334

(0.60), 1.757 (0.67), 1.777 (1.13), 1.788 (1.66), 1.806 (1.91), 1.818 (1.95),

1.842 (1.47), 1.861 (1.98), 1.875 (2.57), 1.894 (2.64), 1.907 (2.24), 1.963

(6.55), 2.304 (1.63), 2.323 (2.14), 2.331 (2.36), 2.342 (2.15), 2.358 (2.78),

2.368 (2.22), 2.385 (1.33), 2.404 (0.85), 2.437 (3.91), 2.469 (0.87), 2.518

(1.58), 2.523 (1.22), 2.539 (1.31), 2.556 (1.20), 2.575 (0.80), 3.067 (1.53),

3.087 (1.75), 3.095 (2.04), 3.100 (2.05), 3.115 (1.86), 3.121 (2.13), 3.129

(1.79), 3.148 (1.54), 3.359 (4.87), 3.457 (5.15), 3.464 (5.77), 3.474 (6.68),

3.481 (8.06), 3.554 (4.26), 3.615 (2.65), 3.630 (2.19), 3.648 (1.47), 6.886

(8.77), 6.941 (5.56), 6.956 (5.57), 7.267 (2.87), 7.452 (2.29), 7.472 (2.44),

7.856 (5.25), 7.860 (5.18), 7.877 (4.54), 7.881 (4.66), 8.230 (3.55), 8.256

(9.02), 8.270 (8.18), 8.500 (14.73), 8.501 (14.96).

SM: Compound 117.01 and (1RS)-2,2-difluorocyclopropanecarboxylic acid

Example 117.06

embedded image

[(1RS)-2,2-difluoro-1-methylcyclopropyl](4-{(1R or S)-1-[2-({6-[6-

(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-

yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.18 min; MS (ESIneg): m/z = 586 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.285 (13.10), 1.301 (13.44), 1.328

(16.00), 1.495 (0.94), 1.515 (1.54), 1.527 (1.78), 1.545 (1.32), 1.558 (0.95),

1.676 (1.17), 1.687 (1.23), 1.696 (1.31), 1.712 (1.68), 1.723 (1.30), 1.733

(1.13), 1.743 (0.89), 1.964 (5.33), 2.247 (0.85), 2.267 (0.67), 2.322 (1.82),

2.326 (1.80), 2.385 (1.26), 2.404 (1.25), 2.522 (1.52), 2.539 (0.68), 2.615

(0.77), 3.390 (5.16), 3.445 (3.53), 3.454 (4.23), 3.461 (4.69), 3.471 (5.40),

3.503 (6.55), 3.565 (2.16), 6.886 (7.72), 6.939 (4.59), 6.952 (4.58), 7.260

(2.35), 7.449 (2.15), 7.469 (2.30), 7.853 (4.30), 7.857 (4.33), 7.874 (3.75),

7.878 (3.91), 8.229 (3.31), 8.255 (7.11), 8.268 (6.42), 8.500 (12.46).

SM: Compound 117.01 and (1RS)-2,2-difluoro-1-

methylcyclopropanecarboxylic acid

Example 117.07

embedded image

2-hydroxy-2-methyl-1-(4-{(1R or 1S)-1-[2-({6-[6-(pyrrolidin-1-yl)pyrimidin-

4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-

yl)propan-1-one

LC-MS (Method 2): R_t= 1.09 min; MS (ESIpos): m/z = 555.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.279 (16.00), 1.293 (3.15), 1.310

(2.70), 1.391 (6.67), 1.446 (0.46), 1.908 (0.59), 1.968 (1.31), 2.331 (0.65),

2.345 (0.73), 2.358 (0.80), 2.430 (0.58), 2.522 (0.52), 3.431 (0.74), 3.448

(0.78), 3.511 (1.57), 5.370 (3.56), 6.893 (1.42), 6.949 (1.01), 6.962 (1.01),

7.172 (1.81), 7.857 (0.98), 7.861 (1.02), 7.878 (0.87), 7.882 (0.92), 8.225

(0.45), 8.263 (1.72), 8.276 (1.58), 8.503 (2.81), 8.505 (2.96).

SM: Compound 117.01 and 2-hydroxy-2-methylpropanoic acid

Example 118.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (300 mg, see Example 85.01) in 2-propanol (10 ml) in a microwave tube was added morpholine (290 μl). The mixture was stirred at 90° C. for 2 h. The mixture was concentrated in vacuum. Silicagel chromatography gave a solid that was triturated with warm ethanol to give 250 mg of the title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=586 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.813 (1.12), 0.830 (2.39), 0.835 (0.97), 0.840 (0.56), 0.849 (1.05), 0.852 (1.17), 0.857 (1.41), 0.874 (0.40), 0.935 (0.83), 0.952 (0.90), 1.237 (0.76), 1.239 (0.71), 1.278 (1.85), 1.295 (1.78), 1.377 (16.00), 1.394 (1.23), 2.309 (0.45), 2.383 (0.44), 2.518 (0.70), 2.523 (0.48), 3.331 (11.92), 3.433 (0.41), 3.450 (0.40), 5.759 (1.90), 6.938 (0.41), 6.951 (0.41), 7.169 (0.91), 8.255 (0.91), 8.268 (0.86), 8.568 (1.56), 8.570 (1.53).

Example 118.02
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

To a stirred solution of 6-[6-(morpholin-4-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (85.0 mg, see Compound 118.01) in DMF (1.9 mL) was added sodium bicarbonate (72.0 mg), cyclopropanecarboxylic acid (18 μl, 95% purity) and HATU (86.9 mg). The mixture was stirred at r.t. for 3 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.03 min; MS (ESIpos): m/z=554 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.653 (0.81), 0.661 (1.79), 0.666 (1.14), 0.674 (0.93), 0.681 (2.17), 0.685 (1.82), 0.690 (1.97), 0.698 (1.79), 0.702 (2.10), 0.709 (1.01), 1.291 (3.48), 1.308 (3.48), 1.910 (0.45), 1.917 (0.48), 1.929 (0.79), 1.941 (0.44), 1.948 (0.40), 2.083 (1.44), 2.322 (0.43), 2.326 (0.45), 2.393 (0.57), 2.447 (0.42), 2.518 (0.89), 2.522 (0.60), 3.446 (1.16), 3.463 (1.55), 3.702 (16.00), 6.952 (1.01), 6.955 (1.02), 6.965 (1.03), 7.186 (1.94), 7.901 (0.97), 7.905 (0.97), 7.922 (0.87), 7.926 (0.87), 8.263 (1.97), 8.276 (1.86), 8.568 (3.21), 8.570 (3.27).

Example 118.03
3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

embedded image

To a stirred solution of 6-[6-(morpholin-4-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine trihydrochloride (85.0 mg, see Compound 118.01) in DMF (1.9 mL) was added sodium bicarbonate (72.0 mg), 3,3,3-trifluoropropanoic acid (19 μl) and HATU (86.9 mg). The mixture was stirred at r.t. for 3 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40 mg of the title compound.

LC-MS (Method 2): R_t=1.08 min; MS (ESIpos): m/z=596 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.036 (5.01), 1.054 (9.81), 1.071 (5.08), 1.285 (14.20), 1.302 (14.48), 1.334 (0.47), 2.081 (0.78), 2.310 (1.65), 2.323 (2.98), 2.337 (3.61), 2.347 (3.33), 2.361 (2.85), 2.412 (3.72), 2.435 (3.16), 2.449 (2.41), 2.522 (1.23), 3.352 (16.00), 3.433 (8.05), 3.442 (6.71), 3.459 (6.68), 3.476 (9.33), 3.490 (4.87), 3.576 (2.61), 3.603 (7.36), 3.631 (7.02), 3.658 (2.58), 4.014 (1.54), 4.352 (0.53), 4.364 (0.90), 4.376 (0.51), 6.943 (4.42), 6.956 (4.42), 7.183 (8.34), 7.278 (1.17), 7.345 (0.48), 7.411 (0.66), 7.535 (0.53), 7.905 (4.14), 7.908 (4.17), 7.926 (3.71), 7.929 (3.76), 8.212 (0.58), 8.262 (8.01), 8.276 (7.51), 8.333 (0.72), 8.571 (13.14), 10.732 (1.35), 12.252 (1.00).

Example 118.04
(4-{(1R or 1S)-1-[2-({6-[6-(morpholin-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

To a stirred solution of 6-[6-(morpholin-4-yl)pyrimidin-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine trihydrochloride (60.0 mg, see Compound 118.01) in DMF (1.3 mL) was added sodium bicarbonate (50.8 mg), 1-(trifluoromethyl)cyclopropanecarboxylic acid (23.3 mg) and HATU (61.4 mg). The mixture was stirred at r.t. for 65 h. Water was added, the mixture was stirred for 15 minutes and the mixture was filtered. The solution was directly used for preparative reverse phase HPLC purification. Preparative reverse phase HPLC (gradient of water and acetonitrile containing ammonia as additive) gave 40.0 mg of the title compound.

LC-MS (Method 2): R_t=1.14 min; MS (ESIpos): m/z=622 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.159 (1.63), 1.254 (0.94), 1.266 (2.03), 1.289 (3.41), 1.305 (3.28), 2.327 (0.59), 2.332 (0.54), 2.341 (0.55), 2.356 (0.67), 2.370 (0.78), 2.453 (0.82), 2.466 (0.76), 2.518 (1.36), 2.523 (0.97), 3.447 (0.93), 3.463 (0.90), 3.569 (1.12), 3.702 (16.00), 6.941 (1.01), 6.944 (1.02), 6.955 (1.03), 6.958 (1.05), 7.261 (0.48), 7.285 (1.16), 7.891 (1.07), 7.896 (1.05), 7.912 (0.94), 7.917 (0.97), 8.253 (2.03), 8.267 (1.99), 8.565 (3.20), 8.567 (3.29).

Example 119.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(2,2,2-trifluoroethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

To a stirred solution of 2,2,2-trifluoroethanol (748 mg) in 1,4-dioxane (4.0 ml) was added sodium hydride (196 mg, 55% w/w in oil) and the mixture was stirred for 10 minutes. A solution of tert-butyl 4-[(1R or 1S)-1-(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate (400 mg, see Example 85.01) in 1,4-dioxane (2.0 ml) was added and the mixture was stirred at r.t. for 1 h and at 60° C. for 2 h. Water was added and the mixture was extracted with ethyl acetate. The organic phase was washed with half-saturated sodium chloride solution, dried (sodium sulfate), filtered and the solvent was removed in vacuum. Silicagel chromatography followed by aminophase-silicagel chromatography gave 250 mg of the title compound.

LC-MS (Method 2): R_t=1.46 min; MS (ESIpos): m/z=599 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.278 (1.66), 1.295 (1.67), 1.307 (0.42), 1.369 (5.29), 1.375 (16.00), 2.295 (0.43), 2.309 (0.51), 2.322 (0.42), 2.383 (0.49), 2.396 (0.41), 2.518 (0.48), 5.107 (0.41), 5.130 (1.18), 5.152 (1.09), 5.758 (4.36), 7.167 (0.48), 8.269 (0.73), 8.283 (0.67), 8.863 (1.56), 8.865 (1.57).

The Example compounds in the following table 13 were synthesized in analogy to the preparation of Example 117.02, followed by purification by preparative reverse phase HPLC or silicagel chromatography.

TABLE 13

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Example
Starting materials (SM):

Example 119.02

embedded image

3,3,3-trifluoro-1-(4-{(1R)-1-[2-({6-[6-(2,2,2-trifluoroethoxy)pyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)propan-1-one

LC-MS (Method 2): R_t= 1.3 min; MS (ESIpos): m/z = 608.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.291 (15.78), 1.308 (16.00), 2.328

(3.47), 2.342 (3.44), 2.351 (3.18), 2.366 (2.82), 2.417 (3.75), 2.428 (4.08),

2.440 (3.00), 2.455 (2.37), 2.518 (3.28), 2.523 (2.24), 2.540 (1.62), 2.665

(0.59), 2.669 (0.81), 2.673 (0.58), 3.424 (4.23), 3.436 (7.49), 3.449 (4.92),

2.470 (7.89), 3.485 (8.20), 3.578 (2.91), 3.606 (8.26), 3.633 (7.84), 3.660

(2.47), 4.016 (0.65), 5.107 (3.75), 5.130 (11.02), 5.152 (10.55), 5.175 (3.24),

6.958 (3.63), 6.971 (3.63), 7.177 (5.01), 7.410 (0.92), 7.427 (1.00), 7.559

(1.93), 7.674 (1.14), 7.956 (3.18), 7.977 (2.86), 8.249 (1.11), 8.278 (7.78),

8.292 (7.27), 8.410 (1.49), 8.864 (14.75), 8.866 (14.66), 10.769 (2.02), 12.314

(1.79).

SM: Compound 119.01 and 3,3,3-trifluoropropanoic acid

Example 119.03

embedded image

cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(2,2,2-trifluoroethoxy)pyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.28 min; MS (ESIpos): m/z = 567 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.643 (1.20), 0.662 (8.20), 0.681

(9.86), 0.686 (9.10), 0.690 (9.63), 0.702 (9.83), 0.709 (4.87), 0.722 (1.17),

1.293 (15.75), 1.310 (16.00), 1.900 (0.97), 1.912 (1.96), 1.919 (2.27), 1.931

(3.52), 1.944 (2.11), 1.950 (1.89), 1.963 (0.87), 2.326 (2.34), 2.394 (3.13),

2.454 (2.57), 2.617 (0.59), 2.669 (0.87), 3.453 (6.29), 3.469 (7.92), 3.671

(4.38), 5.107 (3.44), 5.130 (10.17), 5.152 (9.73), 5.175 (3.16), 6.966 (3.77),

6.978 (3.82), 7.184 (6.24), 7.409 (1.17), 7.428 (1.22), 7.558 (2.32), 7.675

(1.43), 7.957 (3.29), 7.977 (3.03), 8.249 (1.38), 8.279 (7.31), 8.292 (6.85),

8.410 (1.83), 8.865 (14.47), 10.767 (2.55), 12.293 (1.81), 12.318 (2.22).

SM: Compound 119.01 and cyclopropanecarboxylic acid

Example 119.04

embedded image

(4-{(1R or 1S)-1-[2-({6-[6-(2,2,2-trifluoroethoxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.34 min; MS (ESIneg): m/z = 633 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.159 (3.34), 1.218 (1.44), 1.283

(5.77), 1.297 (5.31), 1.387 (16.00), 2.364 (2.20), 3.449 (1.61), 3.463 (1.66),

3.565 (3.37), 5.128 (2.17), 5.149 (2.24), 6.968 (1.62), 7.183 (2.12), 7.426

(0.49), 7.565 (0.88), 7.664 (0.48), 7.958 (1.30), 7.976 (1.28), 8.278 (1.90),

8.288 (1.96), 8.410 (0.56), 8.862 (2.42), 10.777 (1.04), 12.312 (0.91).

SM: Compound 119.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 119.05

embedded image

((1RS)-2,2-difluorocyclopropyl)(4-{(1R or 1S)-1-[2-({6-[6-(2,2,2-

trifluoroethoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-

yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.29 min; MS (ESIpos): m/z = 603 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.144 (0.50), 1.229 (0.50), 1.297

(15.57), 1.314 (15.64), 1.390 (0.46), 1.418 (1.57), 1.763 (0.50), 1.780 (1.00),

1.792 (1.43), 1.810 (1.61), 1.822 (1.68), 1.839 (1.61), 1.859 (1.71), 1.873

(2.07), 1.892 (1.93), 1.905 (1.25), 2.309 (1.43), 2.322 (3.11), 2.326 (3.71),

2.332 (3.00), 2.335 (2.50), 2.347 (1.71), 2.364 (2.54), 2.373 (2.00), 2.444

(3.18), 2.518 (8.25), 2.522 (5.86), 2.539 (1.00), 2.567 (1.14), 2.664 (1.61),

2.668 (2.21), 2.673 (1.57), 3.076 (1.39), 3.096 (1.54), 3.105 (1.75), 3.110

(1.79), 3.125 (1.54), 3.131 (1.82), 3.138 (1.54), 3.158 (1.25), 3.474 (3.07),

3.482 (3.57), 3.491 (4.07), 3.499 (4.43), 3.509 (3.79), 3.515 (3.82), 3.563

(2.54), 3.621 (1.96), 3.637 (1.68), 3.658 (1.04), 5.108 (3.93), 5.130 (11.54),

5.153 (10.89), 5.175 (3.29), 6.966 (4.29), 6.979 (4.32), 7.203 (4.82), 7.437

(0.54), 7.578 (0.96), 7.951 (4.21), 7.955 (4.21), 7.972 (3.79), 7.976 (3.79),

8.278 (8.25), 8.291 (7.71), 8.862 (16.00), 8.865 (16.00), 10.756 (1.04), 12.311

(0.93).

SM: Compound 119.01 and (1RS)-2,2-difluorocyclopropanecarboxylic acid

Example 120.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

tert-Butyl 4-[(1R or 1S)-1-{2-[({2-amino-4-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]phenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (240 mg, 397 μmol; see Compound 120.02) and EDCI (76.1 mg, 397 μmol) were stirred in dichloromethane (7.2 ml) under argon overnight at rt. The mixture was concentrated under reduced pressure and the crude mixture was purified by flash chromatography on silica gel to give 47 mg (19% yield) of the title compound.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.353 (0.49), 0.366 (0.48), 0.519 (0.42), 1.035 (3.70), 1.052 (8.44), 1.070 (4.28), 1.266 (1.62), 1.282 (1.83), 1.294 (0.90), 1.319 (0.44), 1.372 (16.00), 1.376 (8.97), 2.126 (0.54), 2.147 (0.80), 2.228 (0.61), 2.247 (1.10), 2.265 (0.48), 2.280 (0.59), 2.292 (0.83), 2.323 (0.67), 2.327 (0.79), 2.331 (0.62), 2.337 (0.48), 2.359 (0.48), 2.372 (0.48), 2.387 (0.51), 2.398 (0.73), 2.518 (1.97), 2.523 (1.41), 2.665 (0.42), 2.669 (0.56), 2.673 (0.41), 3.404 (0.60), 3.417 (0.68), 3.422 (1.84), 3.435 (1.89), 3.440 (1.97), 3.452 (1.73), 3.457 (0.95), 3.469 (0.63), 3.878 (0.48), 3.895 (0.48), 4.344 (1.15), 4.356 (2.21), 4.369 (1.06), 6.999 (0.57), 7.003 (0.56), 7.013 (0.57), 7.016 (0.56), 8.212 (0.75), 8.225 (0.72).

Example 120.02
1-(4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

6-[1-(cyclopropylmethyl)-3,5-dimethyl-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (56.0 mg; see Compound 120.03), 3,3,3-trifluoropropanoic acid (26 μl), NaHCO₃(48.7 mg) and HATU (110 mg) were stirred in DMF (740 μl) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 4 mg (90% purity) of the title compound.

LC-MS (method 2): R_t=1.19 min; MS (ESIpos): m/z=851 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.36 (dd, 2H), 0.47-0.54 (m, 2H), 1.18-1.25 (m, 1H), 1.30 (d, 3H), 2.15 (br s, 3H), 2.25 (br s, 3H), 2.33-2.39 (m, 2H), 2.40-2.46 (m, 2H), 3.42-3.50 (m, 5H), 3.62 (q, 2H), 3.89 (d, 2H), 6.85-6.95 (m, 2H), 7.12-7.52 (m, 3H), 8.26 (d, 1H), 10.55 (br d, 1H), 12.05 (br d, 1H).

Example 121.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-3-fluorophenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (1.30 g; see Compound 121.02) and EDCI (419 mg) were stirred in dichloromethane (39 ml) under argon overnight at rt. The mixture was then concentrated under reduced pressure and the crude mixture was purified by flash chromatography on silica gel to give 728 mg (90% purity) of the title compound.

LC-MS (method 2): R_t=1.37 min; MS (ESIpos): m/z=561 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.37-0.44 (m, 2H), 0.51-0.58 (m, 2H), 1.20-1.33 (m, 4H), 1.38 (s, 9H), 2.24-2.44 (m, 4H), 3.33 (s, 4H), 3.44 (q, 1H), 4.01 (d, 2H), 6.94 (d, 1H), 7.11 (br s, 1H), 7.22-7.35 (m, 2H), 7.83 (s, 1H), 8.12 (d, 1H), 8.25 (s, 1H), 10.77 (br s, 1H), 12.28 (br s, 1H).

Example 121.02
1-(4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg; see Compound 121.03), 3,3,3-trifluoropropanoic acid (46 μl), NaHCO₃(88.4 mg) and HATU (200 mg) were stirred in DMF (2.0 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 51 mg (95% purity) of the title compound.

LC-MS (method 2): R_t=1.20 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.37-0.43 (m, 2H), 0.52-0.59 (m, 2H), 1.21-1.34 (m, 4H), 2.28-2.47 (m, 4H), 3.39-3.53 (m, 5H), 3.62 (d, 2H), 4.01 (d, 2H), 6.92-6.99 (m, 1H), 7.11 (s, 1H), 7.31 (s, 2H), 7.83 (s, 1H), 8.12 (d, 1H), 8.27 (d, 1H), 10.79 (s, 1H), 12.27 (s, 1H).

Example 121.03
cyclopropyl(4-{(1R or 1S)-1-[2-({6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

embedded image

6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-7-fluoro-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg; see Compound 121.03), cyclopropanecarboxylic acid (42 μl), NaHCO₃(88.4 mg) and HATU (200 mg) were stirred in DMF (2.0 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 21.7 mg (92% purity) of the title compound.

LC-MS (method 2): R_t=1.16 min; MS (ESIpos): m/z=529 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.36-0.43 (m, 2H), 0.52-0.58 (m, 2H), 0.63-0.73 (m, 4H), 1.21-1.34 (m, 4H), 1.90-1.98 (m, 1H), 2.24-2.43 (m, 4H), 3.41-3.54 (m, 3H), 3.68 (br s, 2H), 4.01 (d, 2H), 6.93-6.99 (m, 1H), 7.12 (s, 1H), 7.23-7.35 (m, 2H), 7.83 (s, 1H), 8.12 (d, 1H), 8.27 (d, 1H), 10.79 (s, 1H), 12.28 (br s, 1H).

Example 122.01
tert-butyl 4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-3-chloro-4-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]phenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (1.10 g, see Compound 122.02) and EDCI (345 mg) were stirred in dichloromethane (32 ml) under argon overnight at rt. The mixture was concentrated under reduced pressure and purified by flash chromatography on silica gel to give 554 mg (91% purity) of the title compound.

LC-MS (method 2): R_t=1.40 min; MS (ESIpos): m/z=577 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.37-0.43 (m, 2H), 0.52-0.58 (m, 2H), 1.25-1.31 (m, 4H), 1.38 (s, 9H), 2.25-2.44 (m, 4H), 3.33 (s, 4H), 3.44 (q, 1H), 4.02 (d, 2H), 6.92-6.98 (m, 1H), 7.07 (s, 1H), 7.20 (d, 1H), 7.41-7.47 (m, 1H), 7.78 (s, 1H), 8.13 (s, 1H), 8.27 (d, 1H), 10.96 (s, 1H), 12.30 (s, 1H).

Example 122.02
1-(4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg; see Compound 122.03), 3,3,3-trifluoropropanoic acid (45 μl), NaHCO₃(86.0 mg) and HATU (195 mg) were stirred in DMF (2.0 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 22.0 mg (95% purity) of the title compound.

LC-MS (method 2): R_t=1.23 min; MS (ESIpos): m/z=587 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.37-0.43 (m, 2H), 0.52-0.58 (m, 2H), 1.22-1.34 (m, 4H), 2.29-2.46 (m, 4H), 3.40-3.51 (m, 5H), 3.62 (q, 2H), 4.02 (d, 2H), 6.94-6.98 (m, 1H), 7.08 (s, 1H), 7.19 (d, 1H), 7.44 (d, 1H), 7.78 (s, 1H), 8.13 (s, 1H), 8.28 (d, 1H), 10.98 (s, 1H), 12.30 (s, 1H).

Example 122.03
(4-{(1R or 1S)-1-[2-({7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)(cyclopropyl)methanone

embedded image

7-chloro-6-[1-(cyclopropylmethyl)-1H-pyrazol-4-yl]-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (100 mg; see Compound 122.03), cyclopropanecarboxylic acid (41 μl), NaHCO₃(86.0 mg) and HATU (195 mg) were stirred in DMF (2.0 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 44.1 mg (90% purity) of the title compound.

LC-MS (method 2): R_t=1.20 min; MS (ESIpos): m/z=545 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.37-0.43 (m, 2H), 0.52-0.59 (m, 2H), 0.64-0.73 (m, 4H), 1.22-1.35 (m, 4H), 1.88-1.98 (m, 1H), 2.25-2.45 (m, 4H), 3.41-3.53 (m, 3H), 3.68 (br s, 2H), 4.02 (d, 2H), 6.94-7.00 (m, 1H), 7.09 (br s, 1H), 7.19 (d, 1H), 7.44 (d, 1H), 7.78 (s, 1H), 8.13 (s, 1H), 8.25-8.31 (m, 1H), 10.98 (s, 1H), 12.31 (s, 1H).

Example 123.01
tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-methyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({[2-amino-4-(1-methyl-1H-pyrazol-5-yl)phenyl]carbamothioyl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate (466 mg; see Compound 123.02) and EDCI (167 mg) were stirred in dichloromethane (16 ml) under argon overnight at rt. The mixture was concentrated under reduced pressure and purified by flash chromatography on silica gel to give 211 mg (83% purity) of the title compound.

LC-MS (method 2): R_t=1.24 min; MS (ESIpos): m/z=503 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.20-1.32 (m, 4H), 1.38 (s, 9H), 2.25-2.44 (m, 4H), 3.33 (s, 4H), 3.44 (q, 1H), 3.86 (s, 3H), 6.33 (d, 1H), 6.94 (dd, 1H), 7.17 (br s, 2H), 7.44 (d, 2H), 7.52-7.66 (m, 1H), 8.27 (d, 1H), 10.66 (br s, 1H), 12.18-12.30 (m, 1H), 12.24 (br s, 1H).

Example 123.02
3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[6-(1-methyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}propan-1-one

embedded image

6-(1-Methyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1 h-benzimidazol-2-amine hydrochloride (75.0 mg; see Compound 123.03), 3,3,3-trifluoropropanoic acid (39 μl), NaHCO₃(73.8 mg) and HATU (167 mg) were stirred in DMF (2.0 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 7.50 mg (90% purity) of the title compound.

LC-MS (method 2): R_t=1.04 min; MS (ESIpos): m/z=513 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.30 (d, 3H), 2.31-2.39 (m, 2H), 2.43 (dt, 2H), 3.44 (br t, 2H), 3.47 (br d, 3H), 3.62 (q, 2H), 3.86 (s, 3H), 6.33 (d, 1H), 6.95 (dd, 1H), 7.18 (s, 2H), 7.44 (d, 2H), 7.53-7.65 (m, 1H), 8.28 (d, 1H), 10.69 (br s, 1H), 12.23 (br s, 1H).

Example 123.03
cyclopropyl{4-[(1R or 1S)-1-(2-{[6-(1-methyl-1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

embedded image

6-(1-methyl-1H-pyrazol-5-yl)-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (75.0 mg; see Compound 123.03), cyclopropanecarboxylic acid (35 μl), NaHCO₃(73.8 mg) and HATU (167 mg) were stirred in DMF (2.0 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 9.00 mg (90% purity) of the title compound.

LC-MS (method 2): R_t=1.01 min; MS (ESIpos): m/z=471 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.63-0.74 (m, 4H), 1.30 (d, 3H), 1.88-1.99 (m, 1H), 2.25-2.46 (m, 4H), 3.41-3.54 (m, 3H), 3.60-3.74 (m, 2H), 3.86 (s, 3H), 6.33 (s, 1H), 6.96 (dd, 1H), 7.10-7.22 (m, 2H), 7.37-7.48 (m, 2H), 7.54-7.66 (m, 1H), 8.28 (d, 1H), 10.67 (br d, 1H), 12.23 (br d, 1H).

Example 124.02
3,3,3-trifluoro-1-{4-[(2-{[6-(1H-pyrazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

embedded image

Crude N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(1H-pyrazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (35.0 mg; see compound 124.04), 3,3,3-trifluoropropanoic acid (19 μl), NaHCO₃(36.5 mg) and HATU (82.5 mg) were stirred in DMF (550 μl) for 2 h at rt. The mixture was diluted with water and stirred for 1 h at rt. The aqueous phase was extracted three times with DCM. The organic layer was filtered (silicone filter) and concentrated under reduced pressure. The crude mixture was purified without work up by preparative HPLC to give 6.00 mg (95% purity) of the title compound.

LC-MS (Method 2): R_t=0.95 min; MS (ESIpos): m/z=485 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.40 (dt, 4H), 3.16 (s, 2H), 3.42-3.55 (m, 6H), 3.65 (q, 2H), 6.55-6.67 (m, 1H), 6.92 (dd, 1H), 7.18-7.55 (m, 3H), 7.57-7.79 (m, 1H), 8.26 (d, 1H), 10.65 (br s, 1H), 12.18 (br s, 1H).

Example 125.01
tert-butyl 4-[(5-bromo-2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-Butyl 4-{[2-({[2-amino-4-(3-methyl-1,2,4-oxadiazol-5-yl)phenyl]carbamothioyl}amino)-5-bromopyridin-4-yl]methyl}piperazine-1-carboxylate (116 mg, see compound 125.04) was stirred with EDCI (73.7 mg) in dichloromethane (4.0 ml) under argon overnight at rt. The mixture was diluted with water and extracted three times with DCM. The organic layer was filtered, dried over a silicone filter and concentrated under reduced pressure. The compound was used without further purification.

LC-MS (Method 2): R_t=1.59 min; MS (ESIpos): m/z=541 [M+H]⁺.

Example 125.02
1-{4-[(5-bromo-2-{[6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

embedded image

N-[5-Bromo-4-(piperazin-1-ylmethyl)pyridin-2-yl]-6-(3-methyl-1,2,4-oxadiazol-5-yl)-1H-benzimidazol-2-amine hydrochloride (110 mg; see compound 125.05), 3,3,3-trifluoropropanoic acid (50 μl), NaHCO₃(95.8 mg) and HATU (217 mg) were stirred in DMF (1.5 ml) for 2 h at rt. The mixture was diluted with water stirred for 1 h at rt. The reaction mixture was extracted three times with DCM. The organic layer was dried (silicone filter) and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 5 mg of the title compound.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=579 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6): δ [ppm]=2.40 (s, 3H), 3.58 (s, 6H), 3.68 (d, 2H), 7.45-7.60 (m, 1.5H), 7.66 (d, 0.5H), 7.74-7.89 (m, 1H), 8.02 (s, 0.5H), 8.21 (s, 0.5H), 8.34-8.43 (m, 1H), 10.94-11.08 (m, 1H), 12.22-12.33 (m, 1H).

Example 126.02
1-(4-{[2-({6-[5-(cyclobutylmethyl)-1,3,4-oxadiazol-2-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-1-one

embedded image

6-[5-(Cyclobutylmethyl)-1,3,4-oxadiazol-2-yl]-N-[4-(piperazin-1-ylmethyl)pyridin-2-yl]-1H-benzimidazol-2-amine (7.00 mg; see compound 126.03), 3,3,3-trifluoropropanoic acid (4.2 μl, 47 μmol), NaHCO₃(7.94 mg) and HATU (18.0 mg) were stirred in DMF (89 μl) overnight at rt. The mixture was concentrated and purified by preparative thin layer chromatography to give 2.00 mg (95% purity) of the title compound.

LC-MS (method 2): R_t=1.17 min; MS (ESIpos): m/z=555 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.77-1.95 (m, 4H), 2.07-2.19 (m, 2H), 2.40 (dt, 4H), 2.72-2.82 (m, 1H), 3.03 (d, 2H), 3.42-3.55 (m, 6H), 3.65 (q, 2H), 6.97 (br d, 1H), 7.19 (s, 1H), 7.47 (br d, 1H), 7.62-7.71 (m, 1H), 7.84-8.15 (m, 1H), 8.29 (d, 1H), 10.80-10.91 (m, 1H), 12.43 (br s, 1H).

The compounds shown in table 14 below were prepared according to the following general procedure:

Compound 01.04 (1 eq.) and the respective heteroaryl halide (1.3 eq) were solubilised in DME and aqueous Na₂CO₃(2.5 eq, 2M) was added. The mixture was sparged with argon and 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.1 eq) was added. The reaction mixture was stirred at 150° C. for 2 hours (if the reaction was not complete, 1.3 eq. of heteroaryl halide as well as 0.1 eq. of catalyst were added and the reaction was stirred between 2 and 20 additional hours at 150° C.). The reaction mixture was then filtered through silicone filter and concentrated under reduced pressure. The crude mixture was purified without work up by preparative HPLC to the desired compound.

TABLE 14

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 130.01

embedded image

tert-butyl 4-[(2-{[6-(3-chloro-2-methylpyridin-4-yl)-1H-benzimidazol-

2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.33 min; MS (ESpos): m/z = 534 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.39 (s, 9H), 2.36 (br t, 4H),

2.64 (s, 3H), 3.34-3.38 (m, 4H), 3.50 (s, 2H), 6.93 (d, 1H), 7.08-7.16

(m, 1H), 7.18 (br s, 1H), 7.31 (br d, 1H), 7.40-7.45 (m, 1H), 7.55-7.67

(m, 1H), 8.27 (br d, 1H), 8.41 (d, 1H), 10.69 (br d, 1H), 12.24 (br s, 1H).

Example 131.01

embedded image

tert-butyl 4-[(2-{[6-(5-fluoro-2-methylpyridin-4-yl)-1H-benzimidazol-

2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.29 min; MS (ESpos): m/z = 518 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.39 (s, 9H), 2.36 (br t, 4H),

3.34-3.38 (m, 4H), 3.50 (s, 2H), 6.94 (d, 1H), 7.18 (s, 1H), 7.28-7.40

(m, 1H), 7.42-7.54 (m, 2H), 7.62 (br s, 0,5H), 7.84 (br s, 0,5H), 8.27 (d,

1H), 8.45 (d, 1H), 10.73 (br s, 1H), 12.27 (br s, 1H).

Example 132.01

embedded image

tert-butyl 4-[(2-{[6-(3-chloro-5-fluoropyridin-4-yl)-1H-benzimidazol-

2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.32 min; MS (ESpos): m/z = 538 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.39 (s, 9H), 2.36 (br t, 4H),

3.35 (br d, 4H), 3.50 (s, 2H), 6.92-6.95 (m, 1H), 7.03-7.15 (m, 1H),

7.18 (br s, 1H), 7.39-7.48 (m, 1H), 7.57-7.64 (m, 1H), 8.27 (br s, 1H),

8.67 (br d, 2H), 10.72 (br d, 1H), 12.27 (br s, 1H).

Example 133.01

embedded image

tert-butyl 4-[(2-{[6-(3-cyanopyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.21 min; MS (ESpos): m/z = 511 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.36 (br t, 4H),

3.35-3.38 (m, 4H), 3.51 (s, 2H), 6.95 (d, 1H), 7.20 (br s, 1H), 7.39 (br

s, 1H), 7.53 (br s, 1H), 7.65-7.77 (m, 2H), 8.28 (d, 1H), 8.83 (d, 1H),

9.06 (s, 1H), 10.67-10.86 (m, 1H), 12.27-12.47 (m, 1H).

Example 134.01

embedded image

tert-butyl 4-{[2-({6-[2-(morpholin-4-yl)pyridin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.28 min; MS (ESpos): m/z = 571 [M + H]⁺

1H-NMR (400 MHz, DMSO-d6): δ [ppm] = 1.40 (s, 9H), 2.36 (br t, 4H),

3.34-3.38 (m, 4H), 3.50 (s, 2H), 3.51-3.56 (m, 4H), 3.69-3.76 (m,

4H), 6.93 (d, 1H), 7.01 (br s, 1H), 7.06 (br s, 1H), 7.20 (br s, 1H), 7.38-

7.56 (m, 2H), 7.71-7.90 (m, 1H), 8.15 (d, 1H), 8.26 (d, 1H), 10.68 (br s,

1H), 12.19 (br s, 1H).

Example 135.01

embedded image

tert-butyl 4-{[2-({6-[2-(dimethylamino)pyridin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 529 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.36 (br t, 4H),

3.09 (s, 6H), 3.34 (s, 4H), 3.50 (s, 2H), 6.80-6.90 (m, 2H), 6.90-6.95

(m, 1H), 7.18 (br s, 1H), 7.37-7.58 (m, 2H), 7.68-7.89 (m, 1H), 8.07-

8.13 (m, 1H), 8.26 (d, 1H), 10.62-10.73 (m, 1H), 12.14-12.24 (m, 1H).

Example 136.01

embedded image

tert-butyl 4-[(2-{[6-(2-cyano-6-methylpyridin-4-yl)-1H-benzimidazol-

2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.32 min; MS (ESIpos): m/z = 525 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.36 (br s, 4H),

2.58 (s, 3H), 3.34 (s, 4H), 3.50 (s, 2H), 6.94 (d, 1H), 7.22 (br s, 1H),

7.42-7.65 (m, 2H), 7.94 (br s, 2H), 8.20 (br s, 1H), 8.27 (d, 1H), 10.73

(br s, 1H), 12.13-12.44 (m, 1H).

Example 137.01

embedded image

tert-butyl 4-[(2-{[6-(2-fluoropyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.29 min; MS (ESIpos): m/z = 504 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.39 (s, 9H), 2.36 (br t, 4H),

3.34 (s, 4H), 3.50 (s, 2H), 6.94 (d, 1H), 7.22 (br s, 1H), 7.41-7.60 (m,

3H), 7.64-7.74 (m, 1H), 7.90 (br s, 1H), 8.26 (dd, 2H), 10.59-10.84

(m, 1H), 12.13-12.42 (m, 1H).

Example 138.01

embedded image

tert-butyl 4-[(2-{[6-(2-aminopyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 501 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.36 (br t, 4H),

3.34 (s, 4H), 3.50 (s, 2H), 5.89 (br s, 2H), 6.68-6.83 (m, 2H), 6.90-

6.95 (m, 1H), 7.14-7.84 (m, 4H), 7.93 (d, 1H), 8.25 (s, 1H), 10.60-

10.75 (m, 1H), 12.12-12.29 (m, 1H).

Example 139.01

embedded image

tert-butyl 4-{[2-({6-[2-(difluoromethyl)pyridin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.29 min; MS (ESpos): m/z = 536 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.39 (s, 9H), 2.33-2.39 (m,

4H), 3.34 (s, 4H), 3.50 (s, 2H), 6.84-7.22 (m, 3H), 7.42-7.66 (m, 2H),

7.81-8.03 (m, 3H), 8.27 (d, 1H), 8.66-8.71 (m, 1H), 10.70-10.82 (m,

1H), 12.17-12.37 (m, 1H).

Example 140.01

embedded image

tert-butyl 4-[(2-{[6-(5-bromopyrazin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.39 min; MS (ESIneg): m/z = 563 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.33-2.40 (m,

4H), 3.34-3.39 (m, 4H), 3.51 (s, 2H), 6.94 (d, 1H), 7.18 (s, 1H), 7.40-

7.66 (m, 1H), 7.85 (br d, 1H), 8.27 (d, 2H), 8.85 (d, 1H), 9.04

(br s, 1H), 10.77 (br s, 1H), 12.31 (br s, 1H).

Example 141.01

embedded image

tert-butyl 4-({2-[(6-{6-[(cyclopropylmethyl)(methyl)amino]pyrimidin-

4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

carboxylate

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 570 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.32 (q, J = 4.90 Hz, 2 H), 0.40-

0.51 (m, 2 H) 1.07-1.12 (m, 1 H) 1.40 (s, 9 H) 2.36 (br t, J = 4.69 Hz, 4

H) 3.17 (s, 3 H) 3.35 (br s, 4 H) 3.50 (s, 2 H) 3.54 (br d, J = 6.59 Hz, 2 H)

6.93 (br d, J = 4.31 Hz, 1 H) 7.02-7.13 (m, 1 H), 7.18 (b s, 1 H), 7.35-

7.58 (m, 1 H) 7.88 (br dd, J = 15.59, 8.24 Hz, 1 H) 8.15 (s, 0,5 H) 8.26 (d,

J = 5.07 Hz, 1 H) 8.30 (s, 0,5 H) 8.51 (s, 1 H) 10.57-10.77 (m, 1 H)

12.22 (br d, J = 18.50 Hz, 1 H)

Example 142.01

embedded image

tert-butyl 4-({2-[(6-{6-[(cyclopropylmethyl)amino]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.24 min; MS (ESIpos): m/z = 556 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.21-0.28 (m, 2H), 0.44-0.50

(m, 2H), 1.02-1.12 (m, 1H), 1.37-1.42 (m, 9H), 2.35 (t, 4H), 3.22 (t,

2H), 3.34-3.41 (m, 4H), 3.50 (s, 2H), 6.87-6.98 (m, 2H), 7.17 (br s,

1H), 7.33-7.59 (m, 3H), 7.67-7.82 (m, 1H), 8.27 (d, 1H), 8.44

(s, 1H), 10.62-10.80 (m, 1H), 12.15-12.30 (m, 1H).

Example 143.01

embedded image

tert-butyl 4-{[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.2 min; MS (ESIpos): m/z = 530 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆); δ [ppm] = 1.40 (s, 12H), 2.34-2.38 (m,

4H), 3.15 (s, 6H), 3.35-3.38 (m, 4H), 3.50 (s, 2H), 6.91-6.96 (m, 1H),

7.02-7.15 (m, 1H), 7.17-7.20 (m, 1H), 7.35-7.44 (m, 1H), 7.85-7.93

(m, 1H), 8.16 (br s, 1H), 8.24-8.28 (m, 1H), 8.31 (br s, 1H), 8.52 (d,

1H), 10.65-10.76 (m, 1H), 12.16-12.29 (m, 1H).

Example 145.01.01
Tert-butyl 4-[(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg; see Compound 01.04), 4,6-dichloropyrimidine (418 mg), Na₂CO₃(1.4 ml, 2.0 M) were solubilised in a mixture of 1,4-dioxane (15 ml) and water (1.5 ml) and the reaction mixture was sparged with argon for 5 min. The 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (76.4 mg) was added and the mixture was stirred 5 h at 120° C. The mixture was diluted with water and extracted three times with EtOAc. The combined organic layer were washed with brine, dried over a silicone filter and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 286 mg (71% purity) of the title compound.

LC-MS (method 2): R_t=1.32 min; MS (ESIneg): m/z=519 [M−H]⁻.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 0.805 (0.50), 0.814 (1.49), 0.822 (0.56), 0.831 (3.56), 0.836 (2.02), 0.841 (0.67), 0.851 (1.58), 0.853 (2.39), 0.858 (1.79), 0.869 (0.66), 0.875 (0.48), 0.936 (0.92), 0.953 (1.06), 1.066 (1.70), 1.237 (1.03), 1.274 (0.44), 1.299 (4.92), 1.395 (16.00), 1.987 (0.48), 2.332 (0.60), 2.359 (1.23), 2.518 (2.69), 2.522 (1.73), 2.673 (0.48), 3.349 (1.11), 3.490 (0.63), 3.507 (1.01), 7.180 (0.41), 8.271 (0.40), 8.283 (0.50), 9.009 (0.56).

Example 145.01.02
tert-butyl 4-[(2-{[6-(6-chloro-5-fluoropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-butyl 4-[(2-{[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (500 mg, see Compound 01.04), 4,6-dichloro-5-fluoropyrimidine (469 mg), aqueous Na₂CO₃(1.4 ml, 2.0 M) and 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (76.4 mg) were stirred in a sealed tube in a mixture of 1,4-dioxane (10 ml) and water (2.0 ml) overnight at 110′. The mixture was then filtered over a silicon e filter and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica gel to give 556 mg (60% purity) of the title compound.

LC-MS (method 2): R_t=1.36 min; MS (ESIpos): m/z=537 [M−H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.065 (16.00), 1.155 (1.74), 1.299 (1.42), 1.393 (2.88), 1.414 (1.32), 2.539 (0.70), 3.334 (0.76), 3.937 (0.68), 8.097 (0.85).

The Example compounds shown in table 15 below were prepared as follows:

The respective chloride (example 145.01.01 or 145.01.02) was solubilised in dioxane and the respective amine (4 to 6 eq) was added. In some cases K₂CO₃or DIPEA (4 eq.) was used. The reaction mixture was stirred 16 hours at reflux. The reaction mixture was then filtered, concentrated under reduced pressure and purified by standard reversed-phase preparative HPLC. or

The respective chloride (example 145.01.01 or 145.01.02) was solubilised in dioxane and the respective alcohol (2 to 6 eq) and NaH (6 eq.) was added. The reaction was stirred 1 to 3 hours at rt. The reaction was stopped by the addition of water, and the aqueous phase was extracted three times with DCM. The organic phase was dried (silicone filter), concentrated under reduced pressure and purified by standard reversed-phase preparative HPLC.

TABLE 15

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 144.01

embedded image

tert-butyl 4-{[2-({6-[5-(dimethylamino)pyrazin-2-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.3 min; MS (ESIpos): m/z = 530 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.40 (s, 9 H) 2.36 (br t, J = 4.69

Hz, 4 H) 3.12 (s, 6 H) 3.34-3.39 (m, 4 H) 3.50 (s, 2 H) 6.92 (d, J = 5.83

Hz, 1 H) 7.18 (br s, 1 H) 7.34-7.53 (m, 1 H) 7.65 (br dd, J = 14.32, 8.24

Hz, 1 H) 7.88-8.09 (m, 1 H) 8.21 (s, 1 H) 8.26 (d, J = 5.07 Hz, 1H) 8.57-

8.67 (m, 1 H) 10.62 (s, 1 H) 12.11 (br d, J = 11.41 Hz, 1 H)

Example 145.01

embedded image

tert-butyl 4-{[2-({6-[6-(piperidin-1-yl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.35 min; MS (ESIpos): m/z = 570 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.40 (s, 9 H) 1.56 (br d, J = 3.80

Hz, 4 H) 1.63-1.70 (m, 2 H) 2.36 (br t, J = 4.94 Hz, 4 H) 3.34-3.39 (m,

4 H) 3.50 (s, 2 H) 3.72 (br s, 4 H) 6.93 (br d, J = 5.32 Hz, 1 H) 7.18 (s, 1

H) 7.20-7.29 (m, 1 H) 7.34-7.56 (m, 1 H) 7.89 (br s, 1H) 8.17 (br s,

0,5 H) 8.26 (d, J = 5.32 Hz, 1 H) 8.31 (br s, 0,5 H) 8.51 (d, J = 1.01 Hz, 1

H) 10.70 (br d, J = 11.66 Hz 1 H) 12.21 (br d, J = 15.71 Hz, 1 H)

Example 146.01

embedded image

tert-butyl 4-({2-[(6-{6-[methyl(2,2,2-trifluoroethyl)amino]pyrimidin-

4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.32 min; MS (ESIpos): m/z = 598 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.36 (br t, 4H),

3.24 (s, 3H), 3.35 (br s, 4H), 3.50 (s, 2H), 4.62 (q, 2H), 6.93 (d, 1H),

7.21 (br s, 1H), 7.28 (br s, 1H), 7.44 (br s, 1H), 7.93 (br d, 1H), 8.26 (d,

2H), 8.62 (d, 1H), 10.71 (br s, 1H), 12.27 (br s, 1H).

Example 147.01

embedded image

tert-butyl 4-{[2-({6-[6-(azetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.18 min; MS (ESIpos): m/z = 542 [M + H]⁺

6H), 3.35 (br s, 4H), 3.50 (s, 2H), 4.10 (t, 4H), 6.73-6.87 (m, 1H),

6.91-6.96 (m, 1H), 7.18 (s, 1H), 7.36-7.57 (m, 1H), 7.82-7.88 (m, 1H),

8.09-8.31 (m, 2H), 8.49 (d, 1H), 10.71 (br s, 1H), 12.24 (br s, 1H).

Example 148.01

embedded image

tert-butyl 4-({2-[(6-{6-[ethyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.29 min; MS (ESIpos): m/z = 544 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.07-1.16 (m, 3 H) 1.40 (s, 9 H)

2.31-2.40 (m, 4 H) 3.10 (s, 3 H) 3.34-3.38 (m, 4 H) 3.43-3.56 (m, 2

H) 3.66 (q, J = 6.84 Hz, 2 H) 6.91-6.95 (m, 1 H) 6.99-7.11 (m, 1 H)

7.15-7.21 (m, 1 H) 7.36-7.57 (m, 1 H) 7.88 (br s, 1 H) 8.15 (br s, 0,5

H) 8.26 (d, J = 5.58 Hz, 1 H) 8.30 (br s, 0,5 H) 8.51 (d, J = 1.01 Hz, 1 H)

10.71 (br s, 1 H) 12.22 (br d, J = 16.98 Hz, 1 H)

Example 149.01

embedded image

tert-butyl 4-{[2-({6-[6-(ethylamino)pyrimidin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.19 min; MS (ESIpos): m/z = 530 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.17 (t, J = 7.10 Hz, 3 H) 1.40 (s, 9

H) 2.36 (br t, J = 4.94 Hz, 4 H) 3.35 (br s, 4 H) 3.50 (s, 2 H) 6.83-6.91

(m, 1 H) 6.93 (d, J = 5.07 Hz, 1 H) 7.17 (br s, 1 H) 7.30 (br s, 1 H) 7.35-

7.58 (m, 1 H) 7.74 (br s, 1 H) 7.94-8.23 (m, 1 H) 8.26 (d, J = 5.32 Hz, 1

H) 8.45 (s, 1 H) 10.71 (s, 1 H) 12.22 (br d, J = 8.11 Hz, 1 H)

Example 150.01

embedded image

tert-butyl 4-{[2-({6-[6-(methylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.13 min; MS (ESIpos): m/z = 516 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.40 (s, 9 H) 2.36 (br t, J = 4.82

Hz, 4 H) 2.86 (d, J = 4.82 Hz, 3 H) 3.34-3.38 (m, 4 H) 3.50 (s, 2 H) 6.86

(br s, 1 H) 6.93 (d, J = 5.32 Hz, 1 H) 7.14-7.21 (m, 1 H) 7.25 (br s, 1 H)

7.39 (br s, 0.5 H) 7.53 (br s, 0.5 H) 7.76 (br s, 1 H) 8.03 (br s, 0,5 H)

8.22 (br s, 0,5 H) 8.26 (d, J = 5.07 Hz, 1 H) 8.47 (s, 1 H) 10.71 (s, 1 H)

12.24 (br s, 1 H)

Example 151.01

embedded image

tert-butyl 4-{[2-({6-[6-(cyclopropylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.19 min; MS (ESIpos): m/z = 542 [M + H]⁺

Example 152.01

embedded image

tert-butyl 4-{[2-({6-[6-(cyclobutylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.25 min; MS (ESIpos): m/z = 556 [M + H]⁺

Example 153.01

embedded image

tert-butyl 4-({2-[(6-{6-[methyl(propan-2-yl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.32 min; MS (ESIpos): m/z = 558 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.17 (d, 6H), 1.40 (s, 9H), 2.36

(br t, 4H), 2.94 (s, 3H), 3.34-3.39 (m, 4H), 3.50 (s, 2H), 6.93 (br d, 1H),

6.99-7.11 (m, 1H), 7.18 (s, 1H), 7.35-7.57 (m, 1H), 7.83-7.92 (m,

1H), 8.13-8.32 (m, 2H), 8.51 (d, 1H), 10.70 (br d, 1H), 12.21 (br d, 1H).

Example 154.01

embedded image

tert-butyl 4-{[2-({6-[6-(propan-2-ylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.23 min; MS (ESIpos): m/z = 544 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.19 (d, 6H), 1.40 (s, 9H), 2.36

(br t, 4H), 3.34-3.37 (m, 4H), 3.50 (s, 2H), 4.12 (br s, 1H), 6.82-6.90

(m, 1H), 6.93 (d, 1H), 7.18 (br s, 2H), 7.35-7.57 (m, 1H), 7.72 (br s,

1H), 7.94-8.21 (m, 1H), 8.26 (d, 1H), 8.45 (s, 1H), 10.70 (s, 1H), 12.22

(br d, 1H).

Example 155.01

embedded image

tert-butyl 4-{[2-({6-[6-(diethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.32 min; MS (ESIpos): m/z = 558 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.16 (br t, 6H), 1.40 (s, 9H),

2.36 (br t, 4H), 3.35-3.39 (m, 4H), 3.50 (s, 2H), 3.60 (br d, 4H), 6.93

(br d, 1H), 6.96-7.08 (m, 1H), 7.18 (br s, 1H), 7.34-7.59 (m, 1H), 7.88

(br d, 1H), 8.26 (br d, 2H), 8.51 (s, 1H), 10.60-10.77 (m, 1H), 12.16-

12.27 (m, 1H).

Example 156.01

embedded image

tert-butyl 4-({2-[(6-{6-[cyclobutyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 4): R_t= 1.36 min; MS (ESIpos): m/z = 570 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 1.65-1.75 (m,

2H), 2.13-2.29 (m, 4H), 2.36 (br t, 4H), 3.08 (s, 3H), 3.34-3.39 (m,

4H), 3.50 (s, 2H), 5.03 (br s, 1H), 6.93 (br d, 1H), 7.00-7.13 (m, 1H),

7.18 (s, 1H), 7.33-7.60 (m, 1H), 7.89 (br d, 1H), 8.11-8.33 (m, 2H),

8.53 (d, 1H), 10.70 (br d, 1H), 12.22 (br d, 1H).

Example 157.01

embedded image

tert-butyl 4-({2-[(6-{6-[cyclopropyl(methyl)amino]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.05 min; MS (ESIpos): m/z = 556 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.73 (br s, 2 H) 0.94-1.07 (m, 2

H) 1.17 (t, J = 7.10 Hz, 1 H) 1.40 (s, 9 H) 2.36 (br t, J = 4.82 Hz, 4 H) 3.13

(s, 3 H) 3.35 (br s, 4 H) 3.50 (s, 2 H) 6.93 (br d, J = 4.56 Hz, 1 H) 7.18 (s,

1 H) 7.30-7.37 (m, 1 H) 7.41 (br d, J = 8.36 Hz, 0,5 H) 7.57 (br d,

J = 8.62 Hz, 0,5 H) 7.77-7.90 (m, 1 H) 8.08 (s, 0,5 H) 8.27 (d, J = 5.07

Hz, 0,5 H) 8.28 (br s, 1 H) 8.57 (d, J = 1.01 Hz, 1 H) 10.64-10.79 (m, 1

H) 12.18-12.31 (m, 1 H)

Example 158.01

embedded image

tert-butyl 4-[(2-{[6-(6-{[1-

(trifluoromethyl)cyclopropyl]methoxy}pyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.40 min; MS (ESIpos): m/z = 625 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.12 (br d, 4H), 1.40 (s, 9H),

2.34-2.38 (m, 4H), 3.35 (br s, 4H), 3.50 (s, 2H), 4.57 (s, 2H), 6.91-

6.97 (m, 1H), 7.14-7.21 (m, 1H), 7.37 (s, 0,5H), 7.38-7.42 (m, 0,5H),

7.47-7.50 (m, 0,5H), 7.54-7.59 (m, 0,5H), 7.90-7.97 (m, 1H), 8.19-

8.24 (m, 0,5H), 8.27 (d, 1H), 8.36-8.41 (m, 0,5H), 8.79 (d, 1H), 10.72-

10.78 (m, 1H), 12.22-12.30 (m, 1H).

Example 159.01

embedded image

tert-butyl 4-{[2-({6-[6-(cyclobutylmethoxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.49 min; MS (ESIpos): m/z = 571 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 1.81-1.96 (m,

4H), 2.04-2.14 (m, 2H), 2.36 (br t, 4H), 2.77 (quin, 1H), 3.35 (br s, 4H),

3.50 (s, 2H), 4.37 (d, 2H), 6.94 (br s, 1H), 7.15-7.21 (m, 1H), 7.33 (s,

0,5H), 7.40 (br d, 0,5H), 7.44 (br s, 0,5H), 7.52-7.60 (m, 0,5H), 7.88-

7.95 (m, 1H), 8.17-8.22 (m, 0,5H), 8.27 (d, 1H), 8.34-8.39 (m, 0,5H),

8.77 (s, 1H), 10.70-10.77 (m, 1H), 12.21-12.30 (m, 1H).

Example 160.01

embedded image

tert-butyl 4-{[2-({6-[6-(propan-2-yloxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.40 min; MS (ESIpos): m/z = 545 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.35 (d, 6H), 1.40 (s, 9H), 2.36

(br t, 4H), 3.35 (br s, 4H), 3.50 (s, 2H), 5.32-5.43 (m, 1H), 6.90-6.97

(m, 1H), 7.14-7.20 (m, 1H), 7.25-7.37 (m, 1H), 7.38-7.58 (m, 1H),

7.85-7.93 (m, 1H), 8.14-8.23 (m, 0,5H), 8.27 (d, 1H), 8.32-8.38 (m,

0,5H), 8.77 (d, 1H), 10.69-10.79 (m, 1H), 12.20-12.29 (m, 1H).

Example 161.01

embedded image

tert-butyl 4-[(2-{[6-(6-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 531 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.35-1.39 (m, 3H), 1.40 (s,

9H), 2.36 (br t, 4H), 3.35 (br s, 4H), 3.50 (s, 2H), 4.43 (q, 2H), 6.94 (br

s, 1H), 7.18 (br s, 1H), 7.29-7.60 (m, 2H), 7.91 (br t, 1H), 8.18 (s,

0,5H), 8.27 (d, 1H), 8.35 (s, 0,5H), 8.78 (d, 1H), 10.74 (br d, 1H),

12.28 (s, 1H).

Example 162.01

embedded image

tert-butyl 4-{[2-({6-[6-(dimethylamino)-5-fluoropyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.28 min; MS (ESIpos): m/z = 548 [M + H]⁺

The Example compounds shown below in table 16 were prepared according to the following general procedure:

The respective amine (1 eq.; see Compounds 130.01 to 163.01, respectively; Table 3), 3,3,3-trifluoropropionic acid (1.5 eq), NaHCO₃(6 eq.) and HATU (1.5 eq.) were solubilised in DMF and the reaction mixture was stirred at rt between 2 and 48 hours. The crude mixture was directly purified by preparative HPLC without workup to give the respective title compound.

TABLE 16

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 130.02

embedded image

1-{4-[(2-{[6-(3-chloro-2-methylpyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.15 min; MS (ESIpos): m/z = 544 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.36-2.40 (m, 2H), 2.40-2.45

(m, 2H), 2.64 (s, 3H), 3.47 (br d, 2H), 3.48-3.52 (m, 2H), 3.52 (s, 2H),

3.65 (q, 2H), 6.94 (dd, 1H), 7.08-7.17 (m, 1H), 7.19 (s, 1H), 7.31 (d,

1H), 7.42 (br s, 1H), 7.53-7.69 (m, 1H), 8.27 (d, 1H), 8.41 (d, 1H),

10.70 (br s, 1H), 12.24 (br s, 1H).

Example 131.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(5-fluoro-2-methylpyridin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-

1-one

LC-MS (Method 2): R_t= 1.1 min; MS (ESIpos): m/z = 528 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.40-2.45 (m,

2H), 3.48 (dt, 4H), 3.53 (s, 2H), 3.65 (q, 2H), 6.95 (dd, 1H), 7.19 (s, 1H),

7.28-7.41 (m, 1H), 7.43-7.54 (m, 2H), 7.62 (br s, 0,5H), 7.84 (br s,

0,5H), 8.27 (d, 1H), 8.45 (d, 1H), 10.74 (br s, 1H), 12.28 (br s, 1H).

Example 132.02

embedded image

1-{4-[(2-{[6-(3-chloro-5-fluoropyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 548 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.40-2.45 (m,

2H), 3.44-3.51 (m, 4H), 3.52 (s, 2H), 3.65 (q, 2H), 6.94 (d, 1H), 7.10

(br s, 1H), 7.20 (s, 1H), 7.35-7.52 (m, 1H), 7.59 (br s, 1H), 8.28 (d,

1H), 8.67 (d, 2H), 10.74 (br s, 1H), 12.29 (br s, 1H).

Example 133.02

embedded image

4-{2-[(4-{[4-(3,3,3-trifluoropropanoyl)piperazin-1-yl]methyl}pyridin-

2-yl)amino]-1H-benzimidazol-6-yl}pyridine-3-carbonitrile

LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 521 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.39 (br d, 2H), 2.43 (br s, 2H),

3.44-3.49 (m, 2H), 3.51 (br s, 2H), 3.54 (s, 2H), 3.65 (q, 2H), 6.96 (d,

1H), 7.20 (br s, 1H), 7.31-7.54 (m, 2H), 7.70 (br d, 2H), 8.29 (d, 1H),

8.84 (d, 1H), 9.06 (s, 1H), 10.72-10.84 (m, 1H), 12.32-12.42 (m, 1H).

Example 134.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[2-(morpholin-4-yl)pyridin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-

1-one

LC-MS (Method 2): R_t= 1.09 min; MS (ESIpos): m/z = 581 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.40-2.45 (m,

2H), 3.44-3.49 (m, 2H), 3.49-3.55 (m, 8H), 3.65 (q, 2H), 3.70-3.75

(m, 4H), 6.94 (dd, 1H), 6.98-7.03 (m, 1H), 7.06 (br s, 1H), 7.20 (s, 1H),

7.39-7.93 (m, 3H), 8.15 (d, 1H), 8.27 (d, 1H), 10.72 (br s, 1H), 12.21

(br s, 1H).

Example 135.02

embedded image

1-(4-{[2-({6-[2-(dimethylamino)pyridin-4-yl]-1H-benzimidazol-2-

yl)amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 539 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.36-2.40 (m, 2H), 2.41-2.45

(m, 2H), 3.09 (s, 6H), 3.44-3.49 (m, 2H), 3.50 (br d, 2H), 3.52 (s, 2H),

3.65 (q, 2H), 6.80-6.91 (m, 2H), 6.94 (d, 1H), 7.19 (br s, 1H), 7.37-

7.44 (m, 1H), 7.45-7.58 (m, 1H), 7.68-7.89 (m, 1H), 8.10 (br s, 1H),

8.27 (d, 1H), 10.68 (br d, 1H), 12.19 (br d, 1H).

Example 136.02

embedded image

6-methyl-4-{2-[(4-{[4-(3,3,3-trifluoropropanoyl)piperazin-1-

yl]methyl}pyridin-2-yl)amino]-1H-benzimidazol-6-yl}pyridine-2-

carbonitrile

LC-MS (Method 2): R_t= 1.12 min; MS (ESIpos): m/z = 535 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.41-2.45 (m,

2H), 2.58 (s, 3H), 3.48 (dt, 4H), 3.53 (s, 2H), 3.65 (q, 2H), 6.95 (br d,

1H), 7.20 (s, 1H), 7.42-7.65 (m, 2H), 7.90 (br s, 1H), 8.00 (br s, 1H),

8.11-8.26 (m, 1H), 8.28 (d, 1H), 10.77 (br s, 1H), 12.28 (br s, 1H).

Example 137.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(2-fluoropyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

LC-MS (Method 2): R_t= 1.1 min; MS (ESIpos): m/z = 514 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.41 (br d, 4H), 3.43-3.57 (m,

6H), 3.65 (q, 2H), 6.95 (d, 1H), 7.20 (s, 1H), 7.38-7.76 (m, 4H), 7.81-

8.00 (m, 1H), 8.21-8.31 (m, 2H), 10.68-10.82 (m, 1H), 12.20-12.34

(m, 1H).

Example 138.02

embedded image

1-{4-[(2-{[6-(2-aminopyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 0.95 min; MS (ESIpos): m/z = 511 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.40-2.46 (m,

2H), 3.45-3.49 (m, 2H), 3.50 (br d, 2H), 3.52 (s, 2H), 3.65 (q, 2H), 5.93

(br s, 2H), 6.73 (s, 1H), 6.80 (br d, 1H), 6.94 (dd, 1H), 7.18 (s, 1H), 7.34

(br d, 1H), 7.38-7.80 (m, 2H), 7.93 (d, 1H), 8.27 (d, 1H), 10.70 (br s,

1H), 12.20 (br s, 1H).

Example 139.02

embedded image

1-(4-{[2-({6-[2-(difluoromethyl)pyridin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.11 min; MS (ESIpos): m/z = 546 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.40 (dt, 4H), 3.43-3.56 (m,

6H), 3.65 (q, 2H), 6.84-7.23 (m, 3H), 7.39-7.67 (m, 2H), 7.80-8.04

(m, 3H), 8.28 (d, 1H), 8.69 (d, 1H), 10.76 (br s, 1H), 12.03-12.57 (m,

1H).

Example 140.02

embedded image

1-{4-[(2-{[6-(5-chloropyrazin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-

1-one

LC-MS (Method 4): R_t= 1.17 min; MS (ESIpos): m/z = 531 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.39 (br d, 2H), 2.43 (br s, 2H),

3.44-3.49 (m, 2H), 3.51 (br s, 2H), 3.53 (s, 2H), 3.65 (q, 2H), 6.95 (d,

1H), 7.20 (s, 1H), 7.34-7.66 (m, 2H), 7.85 (br d, 1H), 8.28 (d, 1H), 8.79

(d, 1H), 9.07 (br s, 1H), 10.77 (br s, 1H), 12.30 (br s, 1H).

Example 141.02

embedded image

1-[4-({2-[(6-{6-[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-

3,3,3-trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.17 min; MS (ESIpos): m/z = 580 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.32 (q, J = 4.82 Hz, 2 H) 0.48 (br

d, J = 7.86 Hz, 2 H) 1.04-1.13 (m, 1 H) 2.38 (br t, J = 4.69 Hz, 2 H) 2.41-

2.45 (m, 2 H) 3.17 (s, 3 H) 3.45-3.49 (m, 2 H) 3.49-3.57 (m, 6 H) 3.65

(q, J = 10.90 Hz, 2 H) 6.95 (br s, 1 H) 7.02-7.13 (m, 1 H) 7.20 (s, 1 H)

7.36-7.57 (m, 1 H) 7.88 (br dd, J = 15.46, 8.87 Hz, 1 H) 8.15 (s, 0,5 H)

8.27 (d, J = 5.32 Hz, 1 H) 8.30 (s, 0,5 H) 8.51 (d, J = 1.01 Hz, 1 H) 10.66-

10.76 (m, 1 H) 12.22 (br d, J = 17.74 Hz, 1 H)

Example 142.02

embedded image

1-[4-({2-[(6-{6-[(cyclopropylmethyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.09 min; MS (ESIpos): m/z = 566 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.22-0.28 (m, 2H), 0.44-0.50

(m, 2H), 1.03-1.12 (m, 1H), 2.38 (br t, 2H), 2.40-2.44 (m, 2H), 3.23

(br t, 2H), 3.45-3.49 (m, 2H), 3.49-3.53 (m, 4H), 3.65 (q, 2H), 6.94 (br

d, 2H), 7.19 (s, 1H), 7.41 (br s, 2H), 7.74 (br s, 1H), 7.94-8.23 (m, 1H),

8.27 (d, 1H), 8.45 (s, 1H), 10.73 (br s, 1H), 12.24 (br s, 1H).

Example 143.02

embedded image

1-(4-{[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.03 min; MS (ESIpos): m/z = 540 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.35-2.40 (m, 2H), 2.41-2.45

(m, 2H), 3.15 (s, 6H), 3.43-3.49 (m, 2H), 3.51 (br s, 2H), 3.53 (s, 2H),

3.65 (q, 2H), 6.94 (d, 1H), 7.02-7.15 (m, 1H), 7.20 (s, 1H), 7.35-7.60

(m, 1H), 7.85-7.92 (m, 1H), 8.27 (d, 2H), 8.53 (d, 1H), 10.67-10.78

(m, 1H), 12.16-12.31 (m, 1H).

Example 144.02

embedded image

1-(4-{[2-({6-[5-(dimethylamino)pyrazin-2-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.1 min; MS (ESIpos): m/z = 540 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.40 (dt, J = 16.29, 4.66 Hz, 4 H)

3.11 (s, 5 H) 3.44-3.49 (m, 2 H) 3.49-3.54 (m, 4 H) 3.65 (q, J = 11.07

Hz, 2 H) 6.93 (dd, J = 5.32, 1.01 Hz, 1 H) 7.19 (s, 1 H) 7.31-7.56 (m, 1

H) 7.65 (br s, 1 H) 8.07 (br d, J = 10.39 Hz, 1 H) 8.21 (s, 1 H) 8.26 (d,

J = 5.30 Hz, 1 H) 8.61 (br s, 1 H) 10.63 (br s, 1 H) 12.12 (br s, 1 H)

Example 145.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[6-(piperidin-1-yl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-

1-one

LC-MS (Method 2): R_t= 1,21 min; MS (ESIpos): m/z = 580 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.51-1.60 (m, 4 H) 1.60-1.71

(m, 2 H) 2.40 (dt, J = 16.22, 4.69 Hz, 4 H) 3.48 (dt, J = 9.70, 5.16 Hz, 4 H)

3.53 (s, 2 H) 3.65 (q, J = 10.90 Hz, 2 H) 3.69-3.78 (m, 4 H) 6.94 (d,

J = 5.07 Hz, 1 H) 7.16-7.29 (m, 2 H) 7.46 (br s, 1 H) 7.90 (dd, J = 8.49,

1.39 Hz, 1 H) 8.15-8.37 (m, 2 H) 8.52 (d, J = 1.01 Hz, 1 H) 10.72 (br s,

1 H) 12.22 (br s, 1 H)

Example 146.02

embedded image

3,3,3-trifluoro-1-[4-({2-[(6-{6-[methyl(2,2,2-

trifluoroethyl)amino]pyrimidin-4-yl}-1H-benzimidazol-2-

yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]propan-1-one

LC-MS (Method 2): R_t= 1.16 min; MS (ESIpos): m/z = 608 [M + H]⁺

Example 147.02

embedded image

1-(4-{[2-({6-[6-(azetidin-1-yl)pyrimidin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 552 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.35-2.46 (m, 6 H) 3.43-3.49

(m, 2 H) 3.49-3.57 (m, 4 H) 3.65 (d, J = 10.90 Hz, 2 H) 4.10 (t, J = 7.48

Hz, 4 H) 6.76 (br s, 1 H) 6.94 (br d, J = 5.07 Hz, 1 H) 7.19 (s, 1 H) 7.38

(br d, J = 8.36 Hz, 1 H) 7.85 (br s, 1 H) 8.12 (br s, 0,5 H) 8.27 (d, J = 5.07

Hz, 1 H) 8.28 (br s, 0,5 H) 8.49 (d, J = 1.01 Hz, 1 H) 10.74 (br s, 1 H)

12.17-12.30 (m, 1 H)

Example 148.02

embedded image

1-[4({2-[(6-{6-[ethyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.08 min; MS (ESIpos): m/z = 554 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.10-1.16 (m, 1 H) 1.13 (t,

J = 6.97 Hz, 2 H) 2.36-2.45 (m, 4 H) 3.10 (s, 2 H) 3.45-3.51 (m, 4 H)

3.51-3.55 (m, 3 H) 3.60-3.70 (m, 4 H) 6.94 (d, J = 4.31 Hz, 1 H) 7.02

(br s, 1 H) 7.20 (s, 1 H) 7.35-7.59 (m, 1 H) 7.88 (br d, J = 8.36 Hz, 1 H)

8.14 (br s, 0,5 H) 8.27 (d, J = 5.07 Hz, 1 H) 8.28-8.34 (m, 0,5 H) 8.51

(d, J = 1.01 Hz, 1 H) 10.71 (br s, 1 H), 12.24 (br s, 1 H)

Example 149.02

embedded image

1-(4-{[2-({6-[6-(ethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 0.99 min; MS (ESIpos): m/z = 540 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.17 (t, J = 7.22 Hz, 3 H) 2.40 (dt

J = 16.22, 4.82 Hz, 4 H) 3.35-3.40 (m, 2 H) 3.45-3.54 (m, 6 H) 3.65 (d,

J = 11.15 Hz, 2 H) 6.83-6.98 (m, 2 H) 7.19 (br s, 1 H) 7.31 (br s, 1 H)

7.35-7.57 (m, 1 H) 7.74 (br s, 1 H) 7.96-8.23 (m, 1 H) 8.27 (d, J = 5.07

Hz, 1 H) 8.45 (s, 1 H) 10.71 (br s, 1 H) 12.22 (br d, J = 9.13 Hz, 1 H)

Example 150.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[6-(methylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-

1-one

LC-MS (Method 2): R_t= 0.93 min; MS (ESIpos): m/z = 526 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.40 (dt, J = 16.22, 4.69 Hz, 4 H)

2.86 (d, J = 4.56 Hz, 3 H) 3.44-3.49 (m, 2 H) 3.49-3.56 (m, 4 H) 3.65

(q, J = 10.90 Hz, 2 H) 6.84-6.92 (m, 1 H) 6.94 (d, J = 5.07 Hz, 1 H) 7.15-

7.32 (m, 2 H) 7.34-7.58 (m, 1 H) 7.76 (br s, 0,5 H) 8.22 (br s, 0,5 H)

8.27 (d, J = 5.32 Hz, 1 H) 8.47 (br s, 1H) 10.71 (br s, 1 H) 12.23 (br d,

J = 10.65 Hz, 1 H

Example 151.02

embedded image

1-(4-{[2-({6-[6-(cyclopropylamino)pyrimidin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.03 min; MS (ESIpos): m/z = 552 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.52 (br s, 2H), 0.80 (br d, 2H),

2.40 (dt, 4H), 2.61-2.72 (m, 1H), 3.43-3.57 (m, 6H), 3.65 (q, 2H), 6.94

(d, 1H), 6.97-7.07 (m, 1H), 7.19 (s, 1H), 7.36-7.51 (m, 1H), 7.58 (br s,

1H), 7.74-7.84 (m, 1H), 8.27 (d, 1H), 8.47 (s, 1H), 10.73 (br s, 1H),

12.25 (br s, 1H).

Example 152.02

embedded image

1-(4-{[2-({6-[6-(cyclobutylamino)pyrimidin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 4): R_t= 1.08 min; MS (ESIpos): m/z = 566 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.71 (br s, 2H), 1.94 (br d, 2H),

2.33 (br s, 2H), 2.38 (br s, 2H), 2.42 (br s, 2H), 3.45-3.54 (m, 6H), 3.65

(q, 2H), 4.24-4.59 (m, 1H), 6.83 (br d, 1H), 6.94 (br d, 1H), 7.19 (br s,

1H), 7.37-7.62 (m, 2H), 7.67-7.95 (m, 1H), 7.95-8.23 (m, 1H), 8.27

(br d, 1H), 8.44 (s, 1H), 10.72 (br s, 1H), 12.23 (br s, 1H).

Example 153.02

embedded image

3,3,3-trifluoro-1-[4-({2-[(6-{6-[methyl(propan-2-yl)amino]pyrimidin-

4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]propan-1-one

LC-MS (Method 2): R_t= 1.16 min; MS (ESIpos): m/z = 568 [M + H]⁺

Example 154.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[6-(propan-2-ylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-

1-one

LC-MS (Method 2): R_t= 1.05 min; MS (ESIpos): m/z = 554 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.19 (d, J = 6.34 Hz, 6 H) 2.32-

2.40 (m, 2 H) 2.40-2.46 (m, 2 H) 3.43-3.49 (m, 2 H) 3.49-3.57 (m, 4

H) 3.65 (d, J = 10.90 Hz, 2 H) 6.81-6.91 (m, 1 H) 6.94 (d J = 5.07 Hz, 1

H) 7.18 (br s, 2 H) 7.39 (br d, J = 6.84 Hz, 1 H) 7.71 (br s, 1 H) 8.19 (br s,

1 H) 8.27 (d, J = 5.32 Hz, 1 H) 8.45 (s, 1 H) 10.72 (br s, 1 H) 12.23 (br s,

1 H)

Example 155.02

embedded image

1-(4-{[2-({6-[6-(diethylamino)pyrimidin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.18 min; MS (ESIneg): m/z = 566 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.16 (t, 6H), 2.36-2.40 (m,

2H), 2.41-2.45 (m, 2H), 3.45-3.49 (m, 2H), 3.51 (br s, 2H), 3.53 (s,

2H), 3.57-3.70 (m, 6H), 6.94 (d, 1H), 6.99 (br s, 1H), 7.20 (s, 1H), 7.35-

7.59 (m, 1H), 7.86 (br s, 1H), 8.09-8.32 (m, 2H), 8.51 (d, 1H), 10.72

(br s, 1H), 12.23 (br s, 1H).

Example 156.02

embedded image

1-[4-({2-[(6-{6-[cyclobutyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.19 min; MS (ESIpos): m/z = 580 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.64-1.75 (m, 2H), 2.15-2.28

(m, 4H), 2.38 (br t, 2H), 2.41-2.45 (m, 2H), 3.08 (s, 3H), 3.45-3.55

(m, 6H), 3.65 (q, 2H), 5.02 (br s, 1H), 6.94 (br d, 1H), 7.01-7.13 (m,

1H), 7.20 (s, 1H), 7.39 (br d, 1H), 7.83-7.93 (m, 1H), 8.27 (d, 2H), 8.53

(d, 1H), 10.71 (br d, 1H), 12.18-12.29 (m, 1H).

Example 157.02

embedded image

1-[4-({2-[(6-{6-[cyclopropyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 566 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.73 (br s, 2 H) 0.98-1.03 (m, 2

H) 2.38 (br t, J = 4.82 Hz, 2 H) 2.41-2.45 (m, 2 H) 2.73-2.80 (m, 1 H)

3.13 (s, 3 H) 3.42-3.52 (m, 4 H) 3.53 (s, 2 H) 3.65 (q, J = 10.90 Hz, 2 H)

6.94 (d, J = 4.82 Hz, 1 H) 7.20 (s, 1 H) 7.35 (br s, 0,5 H) 7.42 (br s, 1 H)

7.57 (br s, 0,5 H) 7.84 (br s, 1 H) 8.09 (br s, 0,5 H) 8.27 (d, J = 5.32 Hz,

1,5 H) 8.57 (d, J = 1.01 Hz, 1 H) 10.73 (br s, 1 H) 12.25 (br s, 1 H))

Example 158.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(6-{[1-

(trifluoromethyl)cyclopropyl]methoxy}pyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-

1-one

LC-MS (Method 2): R_t= 1.29 min; MS (ESIpos): m/z = 635 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.12 (br d, 4H), 2.36-2.40 (m,

2H), 2.42 (m, 2H), 3.48 (m, 2H), 3.51 (m, 2H), 3.53 (s, 2H), 3.65 (q,

2H), 4.57 (s, 2H), 6.95 (br d, 1H), 7.20 (br s, 1H), 7.36-7.61 (m, 2H),

7.90-7.98 (m, 1H), 8.17-8.25 (m, 0,5H), 8.28 (d, 1H), 8.34-8.41 (m,

0,5H), 8.79 (s, 1H), 10.72-10.81 (m, 1H), 12.23-12.32 (m, 1H).

Example 159.02

embedded image

1-(4-{[2-({6-[6-(cyclobutylmethoxy)pyrimidin-4-yl]-1H-benzimidazol-

2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 581 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.79-1.99 (m, 4H), 2.08 (m,

2H), 2.40 (br d, 4H), 2.72-2.81 (m, 1H), 3.44-3.56 (m, 6H), 3.65 (q,

2H), 4.33-4.41 (br d, 2H), 6.95 (br s, 1H), 7.16-7.24 (m, 1H), 7.31-

7.61 (m, 2H), 7.89-7.96 (m, 1H), 8.20 (br s, 0,5H), 8.28 (br d, 1H), 8.37

(br s, 0,5H), 8.77 (s, 1H), 10.71-10.79 (m, 1H), 12.21-12.34 (m, 1H).

Example 160.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[6-(propan-2-yloxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-

1-one

LC-MS (Method 2): R_t= 1.22 min; MS (ESIpos): m/z = 555 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.35 (d, 6H), 2.38 (br t, 2H),

2.41-2.44 (br t, 2H), 3.45-3.49 (br t, 2H), 3.50 (br t, 2H), 3.53 (s, 2H),

3.65 (q, 2H), 5.38 (quin, 1H), 6.94 (br s, 1H), 7.19 (br d, 1H), 7.25-7.37

(m, 1H), 7.38-7.58 (m, 1H), 7.89 (m, 1H), 8.13-8.20 (m, 0,5H), 8.28

(d, 1H), 8.32-8.38 (m, 0,5H), 8.77 (d, 1H), 10.69-10.80 (m, 1H), 12.21-

12.30 (m, 1H).

Example 161.02

embedded image

1-{4-[(2-{[6-(6-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.15 min; MS (ESIpos): m/z = 541 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.37 (br t, 3H), 2.41 (br d, 4H),

3.44-3.56 (m, 7H), 3.65 (q, 2H), 4.43 (br d, 2H), 6.95 (br s, 1H), 7.19

(br s, 1H), 7.30-7.59 (m, 2H), 7.90 (br s, 1H), 8.15-8.22 (m, 0,5H),

8.28 (br s, 1H), 8.35 (br s, 0,5H), 8.78 (s, 1H), 10.70-10.80 (m, 1H),

12.20-12.34 (m, 1H).

Example 162.02

embedded image

1-(4-{[2-({6-[6-(dimethylamino)-5-fluoropyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.11 min; MS (ESIpos): m/z = 558 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.35-2.45 (m, 4 H) 3.22 (d,

J = 2.53 Hz, 6 H) 3.47 (br s, 2 H) 3.49-3.55 (m, 4 H) 3.65 (q, J = 11.07

Hz, 2 H) 6.94 (br d, J = 5.07 Hz, 1 H) 7.18 (s, 1 H) 7.37-7.59 (m, 1 H)

7.60-7.77 (m, 1 H) 7.87-8.17 (m, 1 H) 8.27 (d, J = 5.07 Hz, 1 H) 8.34

(d, J = 2.53 Hz, 1 H) 10.75 (br s, 1 H) 12.31 (br s, 1 H)

Example 163.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(6-methoxypyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-

1-one

LC-MS (Method 4): R_t= 1.07 min; MS (ESIpos): m/z = 527 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.40 (dt, 4H), 3.44-3.57 (m,

6H), 3.65 (q, 2H), 3.97 (s, 3H), 6.95 (br s, 1H), 7.19 (br s, 1H), 7.32-

7.61 (m, 2H), 7.88-7.96 (m, 1H), 8.16-8.39 (m, 1H), 8.17-8.37 (m,

1H), 8.81 (d, 1H), 10.75 (br d, 1H), 12.27 (br d, 1H).

The Example compounds shown below in table 17 were prepared according to the following general procedure: The respective amine (1 eq.; see Compounds 130.01 to 163.01, respectively; Table 3), cyclopropanecarboxylic acid (1.5 eq), NaHCO₃(6 eq.) and HATU (1.5 eq.) were solubilised in DMF and the reaction mixture was stirred at rt between 2 and 48 hours. The crude mixture was directly purified by preparative HPLC without workup to give the respective title compounds.

TABLE 17

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 130.03

embedded image

{4-[(2-{[6-(3-chloro-2-methylpyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}(cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.11 min; MS (ESIpos): m/z = 502 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.68-0.74 (m, 4H), 1.93-2.01

(m, 1H), 2.36 (br s, 2H), 2.45 (br s, 2H), 2.64 (s, 3H), 3.50 (br s, 2H),

3.52 (s, 2H), 3.71 (br s, 2H), 6.95 (dd, 1H), 7.08-7.18 (m, 1H), 7.20 (s,

1H), 7.31 (d, 1H), 7.42 (br s, 1H), 7.55-7.66 (m, 1H), 8.28 (d, 1H), 8.41

(d, 1H), 10.71 (br s, 1H), 12.24 (br s, 1H).

Example 131.03

embedded image

cyclopropyl{4-[(2-{[6-(5-fluoro-2-methylpyridin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}methanone

LC-MS (Method 2): R_t= 1.06 min; MS (ESIpos): m/z = 486 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.67-0.74 (m, 4H), 1.93-2.00

(m, 1H), 2.36 (br s, 2H), 2.42-2.48 (m, 2H), 3.51 (br d, 2H), 3.52 (s,

2H), 3.71 (br s, 2H), 6.95 (dd, 1H), 7.20 (s, 1H), 7.30-7.41 (m, 1H),

7.43-7.54 (m, 2H), 7.62 (br s, 0, 5H), 7.84 (br s, 0, 5H), 8.28 (d, 1H),

8.45 (d, 1H), 10.74 (br s, 1H), 12.28 (br d, 1H).

Example 132.03

embedded image

{4-[(2-{[6-(3-chloro-5-fluoropyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}(cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.1 min; MS (ESIpos): m/z = 506 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.74 (m, 4H), 1.96 (tt,

1H), 2.36 (br s, 2H), 2.45 (br s, 2H), 3.52 (s, 4H), 3.70 (br s, 2H), 6.95

(dd, 1H), 7.09 (br d, 1H), 7.20 (s, 1H), 7.37-7.52 (m, 1H), 7.59 (br s,

1H), 8.28 (d, 1H), 8.67 (d, 2H), 10.75 (br s, 1H), 12.29 (br s, 1H).

Example 134.03

embedded image

cyclopropyl(4-{[2-({6-[2-(morpholin-4-yl)pyridin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.06 min; MS (ESIpos): m/z = 539 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.67-0.74 (m, 4H), 1.92-2.00

(m, 1H), 2.36 (br s, 2H), 2.44 (br s, 2H), 3.49-3.55 (m, 8H), 3.67-3.75

(m, 6H), 6.94 (d, 1H), 7.01 (br d, 1H), 7.06 (br s, 1H), 7.21 (s, 1H), 7.46

(br s, 2H), 7.70-7.92 (m, 1H), 8.15 (d, 1H), 8.27 (d, 1H), 10.71 (br s,

1H), 12.21 (br s, 1H).

Example 135.03

embedded image

cyclopropyl(4-{[2-({6-[2-(dimethylamino)pyridin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.09 min; MS (ESIpos): m/z = 497 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.67-0.74 (m, 4H), 1.93-2.01

(m, 1H), 2.36 (br s, 2H), 2.45 (br s, 2H), 3.09 (s, 6H), 3.52 (s, 4H), 3.71

(br s, 2H), 6.83 (s, 1H), 6.87 (br d, 1H), 6.95 (dd, 1H), 7.20 (s, 1H), 7.38-

7.55 (m, 2H), 7.67-7.91 (m, 1H), 8.10 (d, 1H), 8.27 (d, 1H), 10.69 (br

s, 1H), 12.20 (br s, 1H).

Example 136.03

embedded image

4-{2-[(4-{[4-(cyclopropylcarbonyl)piperazin-1-yl]methyl}pyridin-2-

yl)amino]-1H-benzimidazol-6-yl}-6-methylpyridine-2-carbonitrile

LC-MS (Method 2): R_t= 1.09 min; MS (ESIpos): m/z = 493 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.75 (m, 4H), 1.92-2.01

(m, 1H), 2.34-2.47 (m, 4H), 2.59 (s, 3H), 3.45-3.56 (m, 4H), 3.64-

3.75 (m, 2H), 6.93-6.99 (m, 1H), 7.17-7.23 (m, 1H), 7.43-7.67 (m,

2H), 7.88-8.02 (m, 2H), 8.12-8.26 (m, 1H), 8.28 (d, 1H), 10.72-10.82

(m, 1H), 12.24-12.32 (m, 1H).

Example 137.03

embedded image

cyclopropyl{4-[(2-{[6-(2-fluoropyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.06 min; MS (ESIpos): m/z = 472 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.65-0.75 (m, 4H), 1.93-2.01

(m, 1H), 2.33-2.47 (m, 4H), 3.45-3.58 (m, 4H), 3.71 (br s, 2H), 6.96

(br d, 1H), 7.21 (s, 1H), 7.40-7.76 (m, 4H), 7.83-8.00 (m, 1H), 8.20-

8.32 (m, 2H), 10.75 (br d, 1H), 12.28 (br d, 1H).

Example 138.03

embedded image

{4-[(2-{[6-(2-aminopyridin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}(cyclopropyl)methanone

LC-MS (Method 2): R_t= 0.92 min; MS (ESIpos): m/z = 469 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.65-0.75 (m, 4H), 1.92-2.02

(m, 1H), 2.34-2.47 (m, 4H), 3.45-3.57 (m, 4H), 3.64-3.77 (m, 2H),

6.00-6.13 (m, 2H), 6.73-6.87 (m, 2H), 6.93-6.97 (m, 1H), 7.19 (s,

1H), 7.29-7.84 (m, 3H), 7.93 (d, 1H), 8.28 (d, 1H), 10.65-10.76 (m,

1H), 12.11-12.32 (m, 1H).

Example 139.03

embedded image

cyclopropyl(4-{[2-({6-[2-(difluoromethyl)pyridin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.07 min; MS (ESIpos): m/z = 504 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.65-0.75 (m, 4H), 1.97 (tt,

1H), 2.30-2.47 (m, 4H), 3.44-3.56 (m, 4H), 3.63-3.77 (m, 2H), 6.85-

7.22 (m, 3H), 7.40-7.65 (m, 2H), 7.81-8.05 (m, 3H), 8.28 (d, 1H), 8.69

(d, 1H), 10.77 (br s, 1H), 12.29 (br d, 1H).

Example 140.03

embedded image

{4-[(2-{[6-(5-chloropyrazin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}(cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.13 min; MS (ESIpos): m/z = 489 [M + H]⁺

Example 141.03

embedded image

cyclopropyl[4-({2-[(6-{6-

[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]methanone

LC-MS (Method 4): R_t= 1.14 min; MS (ESIpos): m/z = 538 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆): δ ppm 0.27-0.38 (m, 2 H) 0.43-0.52

(m, 2 H) 0.66-0.69 (m, 1 H) 0.69-0.75 (m, 4 H) 1.04-1.15 (m, 1 H)

1.93-2.01 (m, 1 H) 2.36 (br s, 2 H) 2.44 (br s, 2 H) 3.17 (s, 3 H) 3.52

(s, 4 H) 3.55 (br s, 2 H) 3.71 (br s, 2 H) 6.95 (d, J = 5.32 Hz, 1 H) 7.07 (br

s, 1 H) 7.20 (s, 1 H) 7.37-7.57 (m, 1 H) 7.89 (br d, J = 7.10 Hz, 1 H)

8.15 (br s, 0, 5 H) 8.27 (d, J = 5.32 Hz, 1 H) 8.29-8.33 (m, 0, 5 H) 8.51

(d, J = 0.76 Hz, 1 H) 10.72 (br s, 1 H) 12.25 (br s, 1 H)

Example 142.03

embedded image

cyclopropyl[4-({2-[(6-{6-[(cyclopropylmethyl)amino]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]methanone

LC-MS (Method 2): R_t= 1.05 min; MS (ESIpos): m/z = 524 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]: 0.229 (0.94), 0.240 (3.58), 0.244

(3.33), 0.252 (3.70), 0.266 (1.25), 0.447 (1.25), 0.457 (3.14), 0.462 (3.26),

0.468 (1.69), 0.473 (1.63), 0.478 (3.39), 0.482 (3.20), 0.492 (1.13), 0.666

(0.69), 0.678 (1.95), 0.685 (4.52), 0.691 (2.82), 0.698 (2.32), 0.705 (5.52),

0.709 (4.71), 0.713 (5.02), 0.721 (4.52), 0.726 (5.27), 0.733 (2.45), 0.745

(0.63), 1.066 (1.13), 1.074 (1.07), 1.231 (0.44), 1.936 (0.50), 1.948 (1.07),

1.955 (1.13), 1.967 (1.82), 1.979 (1.07), 1.986 (1.00), 1.999 (0.44), 2.084

(0.94), 2.318 (1.19), 2.322 (2.64), 2.326 (3.76), 2.332 (2.89), 2.336 (1.63),

2.364 (1.95), 2.445 (1.95), 2.518 (16.00), 2.522 (9.98), 2.660 (1.13), 2.664

(2.57), 2.669 (3.51), 2.673 (2.57), 2.678 (1.13), 3.211 (1.51), 3.226 (2.51),

3.241 (1.51), 3.523 (7.97), 3.710 (1.88), 6.903 (1.13), 6.942 (2.26), 6.955

(2.64), 7.187 (1.51), 7.378 (1.00), 7.399 (1.07), 7.551 (0.44), 7.736 (0.50),

8.205 (0.63), 8.245 (0.44), 8.260 (0.50), 8.268 (3.58), 8.281 (3.39), 8.445

(3.89), 10.712 (1.95), 12.211 (0.75), 12.236 (1.13).

Example 143.03

embedded image

cyclopropyl(4-{[2-({6-[6-(dimethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.01 min; MS (ESIpos): m/z = 498 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆) δ [ppm]: 0.654 (0.70), 0.662 (1.54), 0.667

(0.93), 0.674 (0.81), 0.681 (1.89), 0.686 (1.53), 0.691 (1.64), 0.698 (1.51),

0.703 (1.75), 0.710 (0.79), 1.043 (0.46), 1.941 (0.64), 2.347 (0.68), 3.126

(16.00), 3.478 (0.70), 3.506 (2.44), 3.686 (0.66), 6.921 (0.80), 6.924 (0.79),

6.934 (0.80), 6.937 (0.81), 7.053 (0.81), 7.182 (1.38), 7.853 (0.73), 7.857

(0.75), 7.874 (0.64), 7.878 (0.69), 8.241 (1.59), 8.255 (1.32), 8.503 (2.64),

8.506 (2.48).

Example 144.03

embedded image

cyclopropyl(4-{[2-({6-[5-(dimethylamino)pyrazin-2-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.07 min; MS (ESIpos): m/z = 498 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4 H) 1.90-2.01

(m, 1 H) 2.34-2.47 (m, 4 H) 3.08-3.16 (m, 6 H) 3.43-3.59 (m, 4 H)

3.71 (br s, 2 H) 6.93 (dd, J = 5.32, 1.01 Hz, 1 H) 7.20 (s, 1 H) 7.33-7.54

(m, 1 H) 7.66 (br s, 1 H) 7.87-8.09 (m, 1 H) 8.21 (d, J = 1.27 Hz, 1 H)

8.26 (d, J = 5.32 Hz, 1 H) 8.57-8.68 (m, 1 H) 10.63 (br s, 1 H) 12.13 (br

s, 1 H)

Example 145.03

embedded image

cyclopropyl(4-{[2-({6-[6-(piperidin-1-yl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.15 min; MS (ESIpos): m/z = 538 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4 H) 1.51-1.60

(m, 4 H) 1.60-1.71 (m, 2 H) 1.93-2.01 (m, 1 H) 2.34-2.47 (m, 4 H)

3.52 (s, 4 H) 3.66-3.77 (m, 6 H) 6.95 (d, J = 5.07 Hz, 1 H) 7.15-7.32

(m, 2 H) 7.33-7.58 (m, 1 H) 7.90 (br d, J = 7.86 Hz, 1 H) 8.17 (br s, 1 H)

8.27 (d, J = 5.32 Hz, 1 H) 8.32 (br s, 1 H) 8.51 (d, J = 1.01 Hz, 1 H) 10.72

(br s, 1 H) 12.21 (br d, J = 14.45 Hz, 1 H)

Example 148.03

embedded image

cyclopropyl[4-({2-[(6-{6-[ethyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]methanone

LC-MS (Method 4): R_t= 1.06 min; MS (ESIpos): m/z = 512 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4 H) 1.13 (t,

J = 7.10 Hz, 3 H) 1.93-2.01 (m, 1 H) 2.34-2.47 (m, 4 H) 3.11 (s, 2 H)

3.50 (br s, 3 H) 3.54 (s, 2 H) 3.63-3.68 (m, 2 H) 3.70 (br d, J = 5.58 Hz,

2 H) 6.96 (dd, J = 5.32, 1.27 Hz, 1 H) 7.01-7.09 (m, 1 H) 7.21 (s, 1 H)

7.47 (br d, J = 5.58 Hz, 1 H) 7.88 (dd, J = 8.36, 1.77 Hz, 1 H) 8.23 (br s,

1 H) 8.28 (d, J = 5.07 Hz, 1 H) 8.52 (d, J = 1.01 Hz, 1 H) 10.74 (br s, 1 H)

12.27 (br s, 1 H)

Example 149.03

embedded image

cyclopropyl(4-{[2-({6-[6-(ethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 0.96 min; MS (ESIpos): m/z = 498 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.74 (m, 4 H) 1.17 (t,

J = 7.22 Hz, 3 H) 1.92-2.01 (m, 1 H) 2.32-2.47 (m, 4 H) 3.35-3.41 (m,

2 H) 3.45-3.58 (m, 4 H) 3.70 (br s, 2 H) 6.83-6.92 (m, 1 H) 6.95 (d,

J = 5.07 Hz, 1 H) 7.19 (br s, 1 H) 7.29 (br s, 1 H) 7.36-7.56 (m, 1 H)

7.74 (br s, 1 H) 7.95-8.23 (m, 1 H) 8.27 (d, J = 5.32 Hz, 1 H) 8.45 (s,

1 H) 10.71 (br s, 1 H) 12.24 (br s, 1 H)

Example 150.03

embedded image

cyclopropyl(4-{[2-({6-[6-(methylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 0.89 min; MS (ESIpos): m/z = 484 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4 H) 1.93-2.00

(m, 1 H) 2.34-2.47 (m, 4 H) 2.86 (d, J = 4.82 Hz, 3 H) 3.52 (s, 4 H) 3.71

(br s, 2 H) 6.81-6.92 (m, 1 H) 6.95 (d, J = 5.32 Hz, 1 H) 7.19 (br s, 1 H)

7.23 (br s, 1 H) 7.36-7.58 (m, 1 H) 7.76 (br s, 1 H) 7.95-8.24 (m, 1 H)

8.27 (d, J = 5.32 Hz, 1 H) 8.46 (s, 1 H) 10.71 (s, 1 H) 12.23 (br d,

J = 11.91 Hz, 1 H)

Example 151.03

embedded image

cyclopropyl(4-{[2-({6-[6-(cyclopropylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 0.97 min; MS (ESIpos): m/z = 510 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.52 (br s, 2H), 0.67-0.74 (m,

4H), 0.80 (br d, 2H), 1.92-2.00 (m, 1H), 2.36 (br s, 2H), 2.45 (br s, 2H),

2.62-2.72 (m, 1H), 3.52 (s, 4H), 3.71 (br s, 2H), 6.95 (br d, 1H), 7.02

(br s, 1H), 7.19 (s, 1H), 7.36-7.50 (m, 1H), 7.58 (br s, 1H), 7.79 (br s,

1H), 8.02-8.24 (m, 1H), 8.27 (br d, 1H), 8.47 (s, 1H), 10.73 (br s, 1H),

12.25 (br s, 1H).

Example 152.03

embedded image

(4-{[2-({6-[6-(cyclobutylamino)pyrimidin-4-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)(cyclopropyl)methanone

LC-MS (Method 4): R_t= 1.05 min; MS (ESIpos): m/z = 524 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.75 (m, 4H), 1.63-1.77

(m, 2H), 1.89-2.00 (m, 3H), 2.26-2.33 (m, 2H), 2.36 (br s, 2H), 2.45

(br s, 2H), 3.52 (m, 4H), 3.70 (br s, 2H), 4.44 (br s, 1H), 6.83 (br d, 1H),

6.95 (br d, 1H), 7.19 (br s, 1H), 7.37-7.63 (m, 2H), 7.69-7.94 (m, 1H),

7.95-8.23 (m, 1H), 8.27 (d, 1H), 8.44 (s, 1H), 10.72 (br s, 1H), 12.24

(br s, 1H).

Example 153.03

embedded image

cyclopropyl[4-({2-[(6-{6-[methyl(propan-2-yl)amino]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]methanone

LC-MS (Method 4): R_t= 1.12 min; MS (ESIpos): m/z = 526 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.68-0.74 (m, 4H), 1.17 (d,

6H), 1.93-2.01 (m, 1H), 2.37 (br s, 2H), 2.45 (br s, 2H), 2.94 (s, 3H),

3.47-3.54 (m, 4H), 3.71 (br s, 2H), 5.00 (br s, 1H), 6.95 (d, 1H), 7.05

(br s, 1H), 7.20 (s, 1H), 7.46 (br s, 1H), 7.88 (br d, 1H), 8.16-8.31 (m,

2H), 8.52 (s, 1H), 10.72 (br s, 1H), 12.24 (br s, 1H).

Example 154.03

embedded image

cyclopropyl(4-{[2-({6-[6-(propan-2-ylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.02 min; MS (ESIpos): m/z = 512 [M + H]⁺

Example 155.03

embedded image

cyclopropyl(4-{[2-({6-[6-(diethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.12 min; MS (ESIpos): m/z = 526 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.75 (m, 4H), 1.16 (t,

6H), 1.91-2.03 (m, 1H), 2.38 (br s, 2H), 2.42-2.46 (m, 2H), 3.47-3.56

(m, 4H), 3.61 (q, 4H), 3.71 (br s, 2H), 6.96 (d, 1H), 7.01 (br s, 1H), 7.21

(s, 1H), 7.46 (br s, 1H), 7.86 (br d, 1H), 8.22 (br s, 1H), 8.27 (d, 1H),

8.52 (d, 1H), 10.73 (br s, 1H), 12.26 (br s, 1H).

Example 156.03

embedded image

[4-({2-[(6-{6-[cyclobutyl(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl](cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.16 min; MS (ESIpos): m/z = 538 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.67-0.75 (m, 4 H) 1.66-1.74

(m, 2 H) 1.92-2.01 (m, 1 H) 2.15-2.30 (m, 4 H) 2.33-2.46 (m, 4 H)

3.08 (s, 3 H) 3.45-3.45 (m, 1 H) 3.45-3.58 (m, 3 H) 3.71 (br s, 2 H)

5.03 (br s, 1 H) 6.95 (br d, J = 5.07 Hz, 1 H) 7.00-7.27 (m, 2 H) 7.36-

7.62 (m, 1 H) 7.90 (br d, J = 8.11 Hz, 1 H) 8.10-8.36 (m, 2 H) 8.53 (d,

J = 1.01 Hz, 1 H) 10.64-10.79 (m, 1 H) 12.22 (br d, J = 15.46 Hz, 1 H)

Example 157.03

embedded image

cyclopropyl[4-({2-[(6-{6-[cyclopropyl(methyl)amino]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]methanone

LC-MS (Method 2): R_t= 1.1 min; MS (ESIpos): m/z = 524 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.67-0.76 (m, 6 H) 0.98-1.04

(m, 2 H) 1.93-2.01 (m, 1 H) 2.34-2.47 (m, 4 H) 2.73-2.79 (m, 1 H)

3.13 (s, 3 H) 3.50 (br s, 2 H) 3.53 (s, 2 H) 3.71 (br s, 2 H) 6.95 (d,

J = 5.32 Hz, 1 H) 7.20 (s, 1 H) 7.35 (s, 1 H) 7.39-7.62 (m, 1 H) 7.84 (br

d, J = 7.60 Hz, 1 H) 8.28 (d, J = 5.32 Hz, 2 H) 8.57 (d, J = 1.01 Hz, 1 H)

10.73 (br s, 1 H) 12.25 (br s, 1 H)

Example 158.03

embedded image

cyclopropyl{4-[(2-{[6-(6-{[1-

(trifluoromethyl)cyclopropyl]methoxy}pyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}methanone

LC-MS (Method 2): R_t= 1.29 min; MS (ESIpos): m/z = 593 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.67-0.75 (m, 4H), 1.12 (br d,

4H), 1.93-2.00 (m, 1H), 2.37 (m, 2H), 2.45 (m, 2H), 3.46-3.56 (m,

4H), 3.71 (br s, 2H), 4.57 (s, 2H), 6.96 (br s, 1H), 7.20 (br d, 1H), 7.37

(s, 0, 5H), 7.40 (br d, 0, 5H), 7.48 (s, 0, 5H), 7.57 (br d, 0, 5H), 7.94 (br t,

1H), 8.22 (s, 0, 5H), 8.28 (d, 1H), 8.38 (s, 0, 5H), 8.79 (s, 1H), 10.77 (br s,

1H), 12.27 (br d, 1H).

Example 160.03

embedded image

cyclopropyl(4-{[2-({6-[6-(propan-2-yloxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.19 min; MS (ESIpos): m/z = 513 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.68-0.73 (m, 4H), 1.35 (d,

6H), 1.93-2.01 (m, 1H), 2.34-2.42 (m, 4H), 3.47-3.51 (m, 2H), 3.53

(s, 2H), 3.67-3.74 (m, 2H), 5.38 (quin, 1H), 6.93-6.98 (m, 1H), 7.18-

7.22 (m, 1H), 7.25-7.27 (m, 0, 5H), 7.35-7.38 (m, 0, 5H), 7.38-7.42

(m, 0, 5H), 7.53-7.58 (m, 0, 5H), 7.87-7.93 (m, 1H), 8.16-8.19 (m,

0, 5H), 8.27-8.30 (m, 1H), 8.34-8.37 (m, 0, 5H), 8.76-8.79 (m, 1H),

10.72-10.77 (m, 1H), 12.23-12.28 (m, 1H).

Example 161.03

embedded image

cyclopropyl{4-[(2-{[6-(6-ethoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.14 min; MS (ESIneg): m/z = 497 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.76 (m, 4H), 1.37 (t,

3H), 1.92-2.00 (m, 1H), 2.36 (br s, 2H), 2.45 (br s, 2H), 3.44-3.57 (m,

4H), 3.71 (br s, 2H), 4.43 (q, 2H), 6.96 (br d, 1H), 7.20 (br s, 1H), 7.29-

7.61 (m, 2H), 7.91 (br d, 1H), 8.19 (br s, 0, 5H), 8.28 (d, 1H), 8.35 (br s,

0, 5H), 8.78 (s, 1H), 10.75 (br s, 1H), 12.27 (br d, 1H).

Example 163.03

embedded image

cyclopropyl{4-[(2-{[6-(6-methoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 4): R_t= 1.03 min; MS (ESIpos): m/z = 485 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.65-0.76 (m, 4H), 1.91-2.03

(m, 1H), 2.36 (br s, 2H), 2.44 (br s, 2H), 3.46-3.57 (m, 4H), 3.71 (br s,

2H), 3.97 (s, 3H), 6.96 (br d, 1H), 7.20 (s, 1H), 7.27-7.65 (m, 2H), 7.91

(br s, 1H), 8.18-8.38 (m, 2H), 8.80 (d, 1H), 10.77 (br s, 1H), 12.30 (br

s, 1H).

The Example compounds in the following table 18 were synthesised according to the preparations, and from starting materials (SM), as specified for the respective Examples in their table entries below.

TABLE 18

Structure

IUPAC-Name

LC-MS(method): Retention time; Mass found

¹H-NMR

Starting material (SM):

Example
Synthesis procedure in analogy to the preparation of:

Example 164.01

embedded image

tert-butyl 4-[(1R or 1S)-1-{2-[(6-{6-[3-(trifluoromethyl)azetidin-1-

yl]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-

yl}ethyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.34 min; MS (ESIpos): m/z = 623.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.000 (1.18), 1.015 (1.18), 1.172

(0.46), 1.278 (1.65), 1.295 (1.66), 1.376 (16.00), 1.987 (0.85), 2.310 (0.43),

2.382 (0.44), 2.518 (0.59), 2.523 (0.42), 3.433 (0.48), 3.450 (0.46), 4.104

(0.44), 4.117 (0.45), 4.127 (0.57), 4.140 (0.47), 4.329 (0.64), 4.352 (1.14),

4.375 (0.49), 5.758 (5.12), 6.934 (0.54), 6.937 (0.55), 6.947 (0.56), 6.950

(0.57), 6.977 (0.51), 7.193 (0.70), 7.866 (0.61), 7.870 (0.60), 7.887 (0.52),

7.891 (0.54), 8.253 (1.05), 8.266 (0.91), 8.565 (1.58), 8.569 (1.59).

SM: Example 85.01

Synthesis in analogy to the preparation of Example 116.01

Example 165.01

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(2,2-difluoropropoxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.42 min; MS (ESIneg): m/z = 593 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.172 (0.74), 1.278 (1.71), 1.295

(1.69), 1.370 (3.46), 1.376 (16.00), 1.385 (0.90), 1.720 (1.04), 1.769 (2.13),

1.817 (0.93), 1.987 (1.38), 2.295 (0.40), 2.310 (0.49), 2.383 (0.44), 2.518

(0.53), 3.322 (1.09), 3.332 (5.51), 4.678 (0.61), 4.711 (1.23), 4.744 (0.55),

7.167 (0.53), 8.268 (0.81), 8.282 (0.76), 8.828 (1.50), 8.830 (1.53).

SM: Example 85.01

Synthesis in analogy to the preparation of Example 119.01

Example 166.01

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(2,2,3,3,3-

pentafluoropropoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-

4-yl]ethyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.53 min; MS (ESIpos): m/z = 648.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.279 (1.64), 1.295 (1.66), 1.376

(16.00), 2.310 (0.42), 2.383 (0.42), 2.518 (0.63), 2.523 (0.45), 5.211 (0.48),

5.246 (0.89), 5.280 (0.43), 5.758 (0.77), 7.167 (0.60), 8.268 (0.82), 8.282

(0.76), 8.874 (1.48), 8.876 (1.49).

SM: Example 85.01

Synthesis in analogy to the preparation of Example 119.01

Example 167.01

embedded image

tert-butyl 4-[(2-{[6-(6-ethoxy-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 561 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.394 (16.00), 1.407 (3.67), 1.425

(1.63), 2.347 (0.98), 2.359 (1.40), 2.371 (0.96), 3.350 (1.13), 3.500 (1.76),

3.757 (1.08), 4.461 (0.43), 4.479 (1.37), 4.496 (1.32), 4.514 (0.40), 6.923

(0.49), 6.936 (0.49), 7.177 (0.42), 8.263 (0.73), 8.276 (0.69), 8.520 (1.75).

SM: Compound 60.01

Synthesis in analogy to the preparation of Example 119.01

Example 168.01

embedded image

tert-butyl 4-[(2-{[6-(furo[3,2-d]pyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.2 min; MS (ESIpos): m/z = 526.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.171 (0.65), 1.385 (1.04), 1.396

(16.00), 1.986 (1.10), 2.352 (0.82), 2.365 (1.14), 2.377 (0.79), 2.518 (0.65),

2.523 (0.51), 3.354 (1.16), 3.511 (1.43), 7.183 (0.44), 7.284 (1.84), 7.290

(1.84), 8.284 (0.49), 8.297 (0.49), 8.628 (1.81), 8.634 (1.75), 9.048 (0.57).

SM: Compound 01.04

Synthesis in analogy to the preparation of Compound 60.01

Example 169.01

embedded image

tert-butyl 4-[(1R or 1S)-1-{2-[(6-{1-[(3,3-difluorocyclobutyl)methyl]-1H-

pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.34 min; MS (ESIpos): m/z = 593 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.066 (0.66), 1.265 (1.60), 1.274

(1.80), 1.282 (1.78), 1.291 (1.58), 1.371 (16.00), 1.376 (14.76), 2.278 (0.63),

2.290 (0.55), 2.305 (0.46), 2.322 (0.55), 2.326 (0.58), 2.331 (0.43), 2.382

(0.62), 2.518 (1.79), 2.522 (1.23), 2.649 (0.52), 2.664 (0.69), 2.669 (0.79),

2.673 (0.61), 3.329 (13.32), 3.422 (0.49), 3.439 (0.72), 3.455 (0.47), 4.250

(0.51), 5.759 (1.82), 6.910 (0.45), 6.925 (0.45), 6.999 (0.47), 7.012 (0.49),

7.155 (0.55), 8.211 (0.74), 8.224 (0.72), 8.237 (0.79), 8.251 (0.72).

SM: Compound 36.05 and Compound 169.04

Synthesis in analogy to the preparation of Example 59.01.01

Example 170.01

embedded image

tert-butyl 4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-

dichlorocyclopropyl]methyl}-1H-pyrazol-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.39 min; MS (ESIpos): m/z = 611 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.814 (0.62), 0.830 (1.39), 0.836

(0.98), 0.840 (0.70), 0.852 (1.22), 0.858 (1.84), 0.869 (0.49), 0.875 (0.54),

0.936 (0.88), 0.953 (0.94), 1.237 (0.99), 1.243 (0.93), 1.262 (0.43), 1.275

(1.91), 1.292 (1.83), 1.377 (16.00), 1.394 (1.49), 1.619 (0.46), 1.638 (0.90),

1.658 (0.57), 1.847 (0.45), 1.865 (0.50), 1.873 (0.59), 1.892 (0.48), 2.282

(0.41), 2.301 (0.65), 2.308 (0.58), 2.319 (0.69), 2.327 (0.67), 2.381 (0.47),

2.392 (0.41), 2.518 (0.76), 2.523 (0.52), 3.423 (0.42), 3.440 (0.42), 4.327

(0.69), 4.346 (0.62), 5.759 (1.02), 6.912 (0.53), 6.915 (0.53), 6.928 (0.58),

7.157 (0.83), 8.241 (0.89), 8.254 (0.90), 10.561 (0.47).

SM: Compound 36.05 and Compound 170.03

Synthesis in analogy to the preparation of Example 59.01.01

Example 171.01

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-7-

fluoro-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.44 min; MS (ESIneg): m/z = 573.4 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.154 (1.62), 1.172 (3.52), 1.190

(1.82), 1.273 (1.38), 1.290 (1.46), 1.309 (1.53), 1.325 (1.55), 1.369 (16.00),

1.376 (14.10), 1.810 (0.49), 1.822 (0.59), 1.827 (0.52), 1.832 (0.74), 1.987

(6.80), 1.995 (0.42), 2.304 (0.64), 2.317 (0.66), 2.322 (0.64), 2.327 (0.66),

2.332 (0.48), 2.391 (0.64), 2.518 (1.46), 2.523 (0.93), 3.999 (0.47), 4.017

(1.40), 4.034 (1.35), 4.052 (0.43), 4.161 (0.99), 4.178 (0.97), 6.948 (0.41),

7.028 (0.52), 7.032 (0.52), 7.044 (0.49), 7.048 (0.51), 7.101 (0.55), 7.297

(0.72), 7.328 (0.92), 7.822 (0.76), 8.062 (0.60), 8.252 (0.53), 8.266 (0.51),

8.552 (0.76), 8.568 (0.72), 10.774 (0.57).

SM: Compound 36.05 and Compound 171.03

Synthesis in analogy to the preparation of Example 59.01.01

Example 172.01

embedded image

tert-butyl 4-[(1R or 1S)-1-(2-{[7-fluoro-6-(6-methylpyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.26 min; MS (ESIpos): m/z = 533 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.277 (1.75), 1.293 (1.74), 1.375

(16.00), 2.308 (0.46), 2.384 (0.47), 2.518 (0.59), 2.523 (0.62), 2.531 (5.70),

3.444 (0.40), 6.960 (0.51), 6.973 (0.51), 7.127 (0.48), 7.814 (0.77), 8.277

(0.67), 8.290 (0.63), 9.093 (1.33), 9.096 (1.32), 10.901 (0.48).

SM: Compound 36.05 and Compound 172.02

Synthesis in analogy to the preparation of Example 59.01.01

Example 173.01

embedded image

tert-butyl 4-{(1R or 1S)-1-[2-({7-fluoro-6-[6-(trifluoromethyl)pyrimidin-4-

yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.45 min; MS (ESIpos): m/z = 587 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.152 (1.32), 1.170 (2.71), 1.187

(1.33), 1.277 (1.64), 1.293 (1.64), 1.374 (16.00), 1.985 (4.79), 2.309 (0.44),

2.384 (0.42), 4.015 (1.03), 4.033 (1.02), 6.971 (0.45), 6.984 (0.46), 7.137

(0.64), 7.502 (0.47), 7.523 (0.51), 8.283 (0.63), 8.296 (0.62), 8.314 (0.83),

9.486 (1.00), 10.971 (0.80), 12.594 (0.44).

SM: Compound 36.05 and Compound 173.01

Synthesis in analogy to the preparation of Example 59.01.01

The Example compounds in the following table 19 were synthesized in analogy to the preparation of Example 117.02, followed by purification by preparative reverse phase HPLC or silicagel chromatography.

TABLE 19

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

¹H-NMR

Example
Starting materials (SM):

Example 164.02

embedded image

3,3,3-trifluoro-1-{4-[(1R or 1S)-1-{2-[(6-{6-[3-(trifluoromethyl)azetidin-1-

yl]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-

yl}ethyl]piperazin-1-yl}propan-1-one

LC-MS (Method 2): R_t= 1.17 min; MS (ESIneg): m/z = 632 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.291 (15.79), 1.308 (16.00), 2.327

(4.14), 2.342 (3.57), 2.351 (3.32), 2.364 (2.91), 2.416 (3.86), 2.428 (4.31),

2.441 (3.24), 2.456 (2.58), 2.518 (5.50), 2.523 (3.69), 2.539 (1.15), 2.665

(0.98), 2.669 (1.39), 2.673 (0.98), 3.424 (4.18), 3.436 (7.38), 3.449 (5.46),

3.467 (8.12), 3.482 (9.85), 3.578 (2.83), 3.606 (8.08), 3.634 (7.63), 3.661

(2.42), 3.775 (1.11), 3.787 (1.56), 3.797 (1.48), 3.809 (1.56), 3.821 (1.19),

4.016 (1.39), 4.104 (4.18), 4.117 (4.39), 4.127 (5.42), 4.140 (4.55), 4.330

(6.28), 4.352 (11.32), 4.375 (4.84), 6.949 (4.84), 6.962 (4.43), 7.028 (1.35),

7.181 (7.43), 7.392 (1.07), 7.411 (1.19), 7.561 (0.86), 7.873 (3.65), 7.894

(3.24), 8.153 (1.31), 8.265 (8.82), 8.278 (8.29), 8.321 (1.81), 8.567 (14.11),

8.569 (14.56), 10.714 (1.19), 12.252 (0.45).

SM: Compound 164.01 and 3,3,3-trifluoropropanoic acid

Example 164.03

embedded image

cyclopropyl{4-[(1R or 1S)-1-{2-[(6-{6-[3-(trifluoromethyl)azetidin-1-

yl]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-

yl}ethyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.14 min; MS (ESIpos): m/z = 591.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.643 (1.15), 0.655 (3.58), 0.663

(8.23), 0.668 (5.13), 0.675 (3.98), 0.682 (9.99), 0.686 (8.20), 0.691 (9.19),

0.698 (8.09), 0.703 (9.38), 0.710 (4.38), 0.723 (1.02), 1.147 (1.44), 1.163

(1.26), 1.228 (0.77), 1.293 (15.84), 1.310 (15.81), 1.752 (0.48), 1.893 (0.48),

1.902 (1.02), 1.915 (1.95), 1.921 (2.11), 1.934 (3.58), 1.946 (2.00), 1.953

(1.84), 1.965 (0.83), 2.322 (2.46), 2.326 (2.80), 2.331 (2.14), 2.395 (2.54),

2.518 (6.38), 2.522 (4.43), 2.539 (5.64), 2.664 (1.15), 2.668 (1.60), 2.673

(1.10), 2.685 (0.43), 3.432 (1.71), 3.449 (5.45), 3.466 (7.11), 3.672 (3.69),

3.764 (0.85), 3.775 (1.10), 3.786 (1.50), 3.798 (1.42), 3.809 (1.52), 3.822

(1.12), 4.104 (4.01), 4.117 (4.19), 4.127 (5.21), 4.140 (4.35), 4.330 (6.04),

4.352 (10.74), 4.374 (4.70), 6.937 (1.60), 6.956 (4.43), 6.970 (4.27), 7.027

(1.15), 7.193 (7.00), 7.411 (1.02), 7.544 (0.72), 7.872 (3.50), 7.893 (3.13),

8.154 (1.07), 8.265 (8.17), 8.278 (7.75), 8.321 (1.44), 8.567 (15.39), 8.570

(16.00), 8.585 (0.45), 8.588 (0.45), 10.732 (1.36), 12.247 (0.88), 12.299

(1.15).

SM: Compound 164.01 and cyclopropanecarboxylic acid

Example 164.04

embedded image

{4-[(1R or 1S)-1-{2-[(6-{6-[3-(trifluoromethyl)azetidin-1-yl]pyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.23 min; MS (ESIneg): m/z = 658 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.036 (1.06), 1.053 (2.67), 1.071

(1.34), 1.159 (7.90), 1.213 (1.26), 1.252 (4.52), 1.264 (9.63), 1.284 (3.66),

1.297 (15.33), 1.314 (15.49), 1.678 (0.90), 1.753 (0.94), 2.323 (2.04), 2.327

(3.07), 2.332 (2.83), 2.347 (2.71), 2.361 (3.26), 2.375 (3.73), 2.461 (4.60),

2.518 (10.85), 2.523 (7.55), 2.540 (2.36), 2.665 (1.69), 2.669 (2.44), 2.673

(1.65), 2.679 (0.75), 3.431 (1.57), 3.448 (4.48), 3.465 (4.32), 3.482 (1.45),

3.572 (5.31), 3.761 (0.90), 3.772 (1.10), 3.784 (1.53), 3.795 (1.45), 3.806

(1.53), 3.818 (1.14), 4.102 (4.17), 4.114 (4.25), 4.125 (5.39), 4.138 (4.52),

4.326 (6.09), 4.349 (10.89), 4.372 (4.72), 6.930 (4.60), 6.943 (4.64), 6.968

(6.92), 7.457 (2.24), 7.478 (2.36), 7.842 (4.01), 7.846 (4.05), 7.863 (3.50),

7.867 (3.54), 8.233 (7.31), 8.245 (8.29), 8.557 (16.00), 8.560 (14.90).

SM: Compound 164.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 164.05

embedded image

((1RS)-2,2-difluorocyclopropyl){4-[(1R or 1S)-1-[2-[(6-{6-[3-

(trifluoromethyl)azetidin-1-yl]pyrimidin-4-yl}-1H-benzimidazol-2-

yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.17 min; MS (ESIneg): m/z = 626 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) 6 [ppm]: 0.986 (1.42), 1.002 (1.42), 1.055

(1.91), 1.071 (2.04), 1.144 (0.53), 1.228 (0.76), 1.302 (14.95), 1.318 (15.08),

1.700 (0.72), 1.752 (1.28), 1.759 (0.49), 1.778 (1.02), 1.789 (1.42), 1.807

(1.68), 1.820 (1.68), 1.838 (1.51), 1.858 (1.71), 1.872 (2.17), 1.891 (1.94),

1.904 (1.28), 1.923 (0.49), 2.322 (3.16), 2.326 (3.75), 2.331 (3.16), 2.336

(2.34), 2.349 (1.94), 2.365 (2.11), 2.446 (3.75), 2.518 (8.33), 2.522 (5.73),

2.539 (5.60), 2.567 (1.02), 2.664 (1.45), 2.668 (1.98), 2.673 (1.38), 2.685

(0.43), 3.075 (1.42), 3.095 (1.55), 3.103 (1.81), 3.110 (1.78), 3.124 (1.61),

3.129 (1.88), 3.138 (1.55), 3.157 (1.35), 3.429 (0.72), 3.467 (3.16), 3.476

(3.23), 3.484 (3.65), 3.494 (4.02), 3.511 (4.41), 3.561 (2.57), 3.624 (2.07),

3.659 (1.19), 3.762 (0.92), 3.773 (1.09), 3.784 (1.65), 3.795 (1.48), 3.807

(1.61), 3.819 (1.22), 4.103 (4.35), 4.116 (4.44), 4.126 (5.50), 4.139 (4.48),

4.328 (6.12), 4.350 (10.80), 4.373 (4.64), 6.944 (4.91), 6.959 (5.40), 6.973

(5.79), 7.385 (0.66), 7.464 (1.81), 7.480 (1.84), 7.855 (5.00), 7.860 (4.97),

7.876 (4.41), 7.880 (4.51), 8.248 (9.02), 8.261 (7.37), 8.548 (0.56), 8.561

(15.37), 8.565 (16.00).

SM: Compound 164.01 and (1RS)-2,2-difluorocyclopropanecarboxylic acid

Example 165.02

embedded image

1-(4-{(1R or 1S)-1-[2-({6-[6-(2,2-difluoropropoxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.25 min; MS (ESIneg): m/z = 603 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.035 (0.77), 1.053 (1.47), 1.070

(0.77), 1.143 (0.50), 1.229 (0.64), 1.293 (12.72), 1.310 (12.95), 1.721 (7.83),

1.769 (16.00), 1.817 (7.16), 2.323 (2.64), 2.327 (3.85), 2.331 (3.58), 2.337

(2.74), 2.345 (2.81), 2.367 (2.28), 2.419 (3.11), 2.430 (3.38), 2.442 (2.44),

2.457 (1.91), 2.518 (7.53), 2.523 (5.29), 2.537 (0.64), 2.665 (1.51), 2.669

(2.11), 2.673 (1.44), 3.425 (3.35), 3.438 (6.03), 3.450 (3.85), 3.473 (5.92),

3.482 (5.96), 3.580 (2.31), 3.608 (6.66), 3.635 (6.36), 3.662 (1.94), 4.017

(0.44), 4.355 (0.47), 4.679 (4.69), 4.712 (9.47), 4.745 (4.25), 6.965 (2.68),

7.174 (2.58), 7.404 (1.21), 7.425 (1.34), 7.482 (2.24), 7.568 (1.07), 7.599

(1.87), 7.944 (1.94), 8.228 (1.54), 8.278 (5.62), 8.291 (5.29), 8.397 (2.01),

8.828 (10.91), 8.831 (10.71), 10.764 (1.94), 12.276 (1.54), 12.299 (1.81).

SM: Compound 165.01 and 3,3,3-trifluoropropanoic acid

Example 165.03

embedded image

cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(2,2-difluoropropoxy)pyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.22 min; MS (ESIneg): m/z = 561 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.664 (7.23), 0.684 (8.95), 0.692

(9.59), 0.704 (8.98), 1.146 (0.51), 1.228 (0.67), 1.296 (13.28), 1.313 (13.70),

1.720 (7.92), 1.769 (16.00), 1.817 (7.35), 1.905 (0.79), 1.918 (1.66), 1.924

(2.06), 1.937 (3.12), 1.955 (1.75), 2.326 (3.24), 2.399 (2.81), 2.619 (0.42),

2.669 (1.78), 3.456 (5.57), 3.472 (7.02), 3.677 (3.99), 4.678 (4.84), 4.712

(9.71), 4.745 (4.51), 6.968 (3.45), 6.979 (3.66), 7.189 (5.53), 7.422 (1.09),

7.485 (1.60), 7.594 (1.51), 7.940 (3.05), 7.961 (2.78), 8.229 (1.09), 8.278

(6.29), 8.291 (6.02), 8.395 (1.39), 8.829 (11.74), 10.757 (2.15), 12.306 (1.63).

SM: Compound 165.01 and cyclopropanecarboxylic acid

Example 166.02

embedded image

3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({6-[6-(2,2,3,3,3-

pentafluoropropoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-

4-yl]ethyl}piperazin-1-yl)propan-1-one

LC-MS (Method 2): R_t= 1.37 min; MS (ESIneg): m/z = 657 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.035 (0.70), 1.052 (1.20), 1.070

(0.72), 1.144 (0.43), 1.228 (0.83), 1.293 (15.81), 1.310 (16.00), 2.318 (1.98),

2.323 (2.65), 2.327 (3.96), 2.331 (3.72), 2.344 (3.34), 2.353 (3.08), 2.366

(2.78), 2.418 (3.72), 2.429 (4.04), 2.443 (2.97), 2.458 (2.46), 2.518 (6.07),

2.523 (4.28), 2.539 (0.43), 2.665 (1.20), 2.669 (1.66), 2.673 (1.12), 3.425

(3.99), 3.437 (7.12), 3.450 (4.55), 3.472 (7.38), 3.481 (7.20), 3.488 (7.01),

3.579 (2.81), 3.607 (8.16), 3.634 (7.63), 3.662 (2.38), 4.017 (1.15), 5.212

(4.33), 5.246 (8.56), 5.280 (4.12), 6.963 (3.10), 6.971 (3.05), 7.179 (5.14),

7.408 (1.12), 7.429 (1.20), 7.539 (2.14), 7.573 (1.02), 7.592 (0.94), 7.664

(1.42), 7.964 (2.62), 7.985 (2.30), 8.253 (1.42), 8.278 (8.03), 8.291 (7.36),

8.415 (1.87), 8.875 (14.88), 8.877 (14.82), 10.761 (1.10).

SM: Compound 166.01 and 3,3,3-trifluoropropanoic acid

Example 166.03

embedded image

cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(2,2,3,3,3-

pentafluoropropoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-

4-yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.35 min; MS (ESIneg): m/z = 615 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.644 (1.13), 0.656 (3.58), 0.663

(8.25), 0.668 (5.01), 0.676 (4.03), 0.683 (9.99), 0.687 (8.36), 0.692 (9.15),

0.699 (8.14), 0.704 (9.46), 0.711 (4.40), 0.723 (1.00), 0.862 (0.63), 1.035

(1.08), 1.052 (1.98), 1.070 (1.11), 1.145 (0.45), 1.227 (0.79), 1.296 (15.97),

1.313 (16.00), 1.904 (1.05), 1.916 (2.00), 1.923 (2.16), 1.935 (3.58), 1.947

(2.00), 1.954 (1.85), 1.966 (0.84), 2.323 (2.56), 2.327 (2.87), 2.331 (2.21),

2.397 (2.58), 2.518 (6.41), 2.523 (4.59), 2.619 (0.98), 2.665 (1.19), 2.669

(1.63), 2.673 (1.13), 3.438 (2.00), 3.454 (6.25), 3.471 (7.57), 3.674 (3.77),

5.210 (4.53), 5.245 (8.94), 5.280 (4.38), 6.964 (4.80), 6.978 (4.85), 7.224

(4.85), 7.487 (1.05), 7.591 (1.79), 7.956 (4.82), 7.960 (4.88), 7.977 (4.43),

7.981 (4.48), 8.273 (8.62), 8.287 (8.22), 8.340 (1.13), 8.873 (15.29), 8.875

(15.08), 8.899 (0.63), 10.775 (0.61), 12.337 (0.45).

SM: Compound 166.01 and cyclopropanecarboxylic acid

Example 166.04

embedded image

(4-{(1R or 1S)-1[2-({6-[6-(2,2,3,3,3-pentafluoropropoxy)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.42 min; MS (ESIneg): m/z = 683 [M − H]⁻

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.145 (1.85), 1.161 (6.49), 1.215

(0.99), 1.254 (3.75), 1.266 (8.13), 1.289 (14.31), 1.305 (13.68), 2.323 (1.67),

2.327 (2.55), 2.332 (2.32), 2.342 (2.24), 2.357 (2.66), 2.370 (3.15), 2.453

(3.31), 2.466 (3.13), 2.518 (6.49), 2.523 (4.51), 2.665 (1.15), 2.669 (1.62),

2.673 (1.09), 2.678 (0.50), 3.439 (1.04), 3.455 (3.44), 3.472 (3.47), 3.488

(1.15), 3.568 (4.38), 5.212 (3.57), 5.247 (7.06), 5.280 (3.41), 6.963 (3.52),

6.975 (3.57), 7.193 (5.47), 7.435 (0.55), 7.554 (0.91), 7.960 (3.28), 7.964

(3.28), 7.981 (2.92), 7.984 (2.97), 8.276 (7.48), 8.289 (7.01), 8.402 (0.50),

8.874 (16.00), 8.876 (15.79), 10.765 (1.15), 12.305 (1.17).

SM: Compound 166.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 166.05

embedded image

((1RS)-2,2-difluorocyclopropyl)(4-{(1R or 1S)-1-[2-({6-[6-(2,2,3,3,3-

pentafluoropropoxy)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-

4-yl]ethyl}piperazin-1-yl)methanone

LC-MS (Method 2): R_t= 1.37 min; MS (ESIpos): m/z = 653 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.297 (13.82), 1.314 (14.14), 1.782

(0.87), 1.792 (1.26), 1.810 (1.51), 1.822 (1.49), 1.841 (1.44), 1.854 (1.39),

1.859 (1.56), 1.873 (1.86), 1.893 (1.71), 1.906 (1.14), 1.924 (0.40), 2.309

(1.29), 2.323 (2.50), 2.327 (2.95), 2.332 (2.50), 2.336 (2.18), 2.348 (1.66),

2.363 (2.38), 2.373 (1.93), 2.444 (2.95), 2.458 (2.23), 2.518 (7.18), 2.523

(4.98), 2.540 (0.77), 2.544 (0.74), 2.551 (0.84), 2.569 (0.87), 2.588 (0.59),

2.660 (0.47), 2.665 (1.07), 2.669 (1.51), 2.673 (1.07), 2.679 (0.50), 3.077

(1.21), 3.096 (1.36), 3.105 (1.54), 3.110 (1.61), 3.124 (1.39), 3.131 (1.63),

3.138 (1.39), 3.159 (1.16), 3.474 (2.75), 3.482 (3.15), 3.492 (3.72), 3.499

(3.86), 3.509 (3.34), 3.516 (3.37), 3.547 (1.93), 3.563 (2.28), 3.621 (1.73),

3.637 (1.54), 3.656 (0.92), 5.212 (3.94), 5.247 (7.75), 5.281 (3.74), 6.968

(3.64), 6.981 (3.72), 7.193 (5.52), 7.430 (0.57), 7.556 (0.99), 7.647 (0.72),

7.960 (3.39), 7.964 (3.44), 7.981 (3.02), 7.985 (3.12), 8.279 (7.73), 8.292

(7.23), 8.405 (0.59), 8.874 (15.98), 8.877 (16.00), 10.766 (1.21), 12.306

(0.94).

SM: Compound 166.01 and (1RS)-2,2-difluorocyclopropanecarboxylic acid

Example 167.02

embedded image

1-{4-[(2-{[6-(6-ethoxy-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.16 min; MS (ESIpos): m/z = 571 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.391 (7.25), 1.408 (16.00), 1.426

(7.44), 2.372 (1.83), 2.384 (2.84), 2.397 (2.14), 2.413 (1.92), 2.426 (2.71),

2.437 (2.10), 2.518 (4.30), 2.523 (3.07), 3.461 (1.93), 3.473 (2.65), 3.485

(2.31), 3.497 (2.28), 3.510 (2.86), 3.526 (8.53), 3.610 (1.29), 3.637 (3.66),

3.665 (3.45), 3.692 (1.15), 3.759 (4.33), 4.047 (1.06), 4.462 (1.89), 4.480

(6.24), 4.498 (6.15), 4.515 (1.79), 6.935 (2.04), 6.948 (2.08), 7.192 (2.95),

7.415 (0.49), 7.875 (0.51), 8.272 (3.14), 8.285 (3.07), 8.311 (0.70), 8.521

(7.59).

SM: Compound 167.01 and 3,3,3-trifluoropropanoic acid

Example 167.03

embedded image

cyclopropyl{4-[(2-{[6-(6-ethoxy-5-methoxypyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.12 min; MS (ESIpos): m/z = 529 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.662 (0.54), 0.673 (1.62), 0.681

(3.68), 0.686 (2.36), 0.693 (1.82), 0.700 (4.40), 0.706 (3.10), 0.712 (3.82),

0.719 (3.78), 0.724 (4.53), 0.731 (2.14), 0.743 (0.53), 1.389 (7.25), 1.406

(16.00), 1.424 (7.60), 1.927 (0.44), 1.939 (0.93), 1.946 (1.00), 1.959 (1.65),

1.970 (0.95), 1.978 (0.87), 2.327 (0.45), 2.331 (0.47), 2.363 (1.84), 2.442

(1.85), 2.518 (1.29), 2.523 (0.87), 3.519 (8.78), 3.703 (1.79), 3.757 (4.93),

4.460 (1.92), 4.478 (6.23), 4.495 (6.15), 4.513 (1.88), 6.941 (2.21), 6.954

(2.25), 7.196 (2.83), 7.417 (0.44), 7.877 (0.47), 8.273 (3.45), 8.286 (3.35),

8.315 (0.61), 8.520 (8.23), 10.737 (0.74), 12.279 (0.74).

SM: Compound 167.01 and cyclopropanecarboxylic acid

Example 167.04

embedded image

{4-[(2-{[6-(6-ethoxy-5-methoxypyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}[1-

(trifluoromethyl)cyclopropyllmethanone

LC-MS (Method 2): R_t= 1.22 min; MS (ESIpos): m/z = 597 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.182 (3.38), 1.236 (0.57), 1.275

(1.95), 1.287 (4.02), 1.307 (1.28), 1.390 (7.23), 1.408 (16.00), 1.425 (7.39),

2.423 (4.14), 2.518 (1.91), 2.523 (1.35), 3.525 (7.41), 3.596 (2.25), 3.760

(4.10), 4.462 (1.86), 4.479 (6.12), 4.497 (6.05), 4.515 (1.76), 6.936 (2.04),

6.949 (2.09), 7.190 (2.83), 7.416 (0.46), 7.875 (0.48), 8.273 (3.17), 8.285

(3.06), 8.315 (0.65), 8.520 (7.67), 10.733 (0.65), 12.238 (0.45), 12.273 (0.84).

SM: Compound 167.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 168.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(furo[3,2-d]pyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

LC-MS (Method 2): R_t= 1.02 min; MS (ESIpos): m/z = 537 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.377 (3.49), 2.389 (5.27), 2.401

(3.92), 2.418 (3.55), 2.430 (5.03), 2.441 (3.94), 2.518 (4.23), 2.523 (3.04),

2.539 (3.03), 3.375 (0.58), 3.388 (0.56), 3.464 (3.55), 3.476 (4.83), 3.488

(4.18), 3.501 (4.12), 3.514 (4.90), 3.535 (14.77), 3.613 (2.45), 3.640 (6.92),

3.668 (6.44), 3.695 (2.02), 4.050 (2.30), 6.961 (2.86), 6.973 (2.73), 7.199

(3.68), 7.285 (14.92), 7.291 (14.27), 7.523 (1.17), 7.544 (1.30), 7.691 (0.50),

8.291 (3.99), 8.304 (4.32), 8.328 (1.13), 8.504 (0.74), 8.629 (16.00), 8.635

(15.41), 8.740 (1.89), 9.047 (4.60), 10.862 (0.82).

SM: Compound 168.01 and 3,3,3-trifluoropropanoic acid

Example 168.03

embedded image

cyclopropyl{4-[(2-{[6-(furo[3,2-d]pyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 0.97 min; MS (ESIpos): m/z = 495 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.655 (0.88), 0.667 (2.24), 0.674

(4.47), 0.680 (3.15), 0.687 (2.42), 0.694 (5.21), 0.699 (2.70), 0.705 (3.00),

0.710 (4.37), 0.717 (4.75), 0.722 (5.29), 0.729 (2.79), 0.741 (0.73), 1.916

(0.58), 1.928 (1.20), 1.936 (1.26), 1.948 (2.05), 1.960 (1.18), 1.967 (1.06),

1.979 (0.48), 2.327 (0.53), 2.360 (2.26), 2.436 (2.25), 2.518 (0.77), 2.523

(0.51), 2.539 (3.10), 3.496 (2.62), 3.520 (10.35), 3.694 (2.12), 6.953 (2.82),

6.956 (2.81), 6.966 (2.88), 6.969 (2.89), 7.228 (3.83), 7.278 (10.05), 7.284

(10.17), 7.587 (0.79), 7.603 (0.82), 8.286 (6.33), 8.299 (5.19), 8.621 (10.93),

8.627 (10.75), 8.636 (0.58), 8.659 (0.65), 9.047 (16.00).

SM: Compound 168.01 and cyclopropanecarboxylic acid

Example 169.02

embedded image

1-{4-[(1R or 1S)-1-{2-[(6-{1-[(3,3-difluorocyclobutyl)methyl]-1H-pyrazol-4-

yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.17 min; MS (ESIpos): m/z = 603 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.071 (2.69), 1.088 (5.46), 1.106

(2.77), 1.138 (1.18), 1.230 (1.55), 1.289 (16.00), 1.306 (15.96), 2.084 (2.31),

2.327 (6.03), 2.649 (7.32), 2.668 (7.62), 3.372 (3.79), 3.389 (3.56), 3.436

(10.05), 3.477 (11.15), 3.578 (3.11), 3.606 (8.61), 3.633 (8.27), 3.661 (2.81),

4.245 (9.10), 4.259 (8.34), 5.759 (4.32), 6.926 (5.65), 6.939 (5.80), 7.169

(8.87), 7.235 (3.15), 7.255 (4.17), 7.369 (1.71), 7.577 (2.65), 7.825 (5.69),

8.123 (5.38), 8.250 (7.66), 8.263 (7.28), 10.586 (2.81), 12.055 (1.78).

SM: Compound 169.01 and 3,3,3-trifluoropropanoic acid

Example 169.03

embedded image

cyclopropyl{4-[(1R or 1S)-1-{2-[(6-{1-[(3,3-difluorocyclobutyl)methyl]-1H-

pyrazol-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-

yl}methanone

LC-MS (Method 2): R_t= 1.13 min; MS (ESIpos): m/z = 561 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.642 (1.24), 0.654 (3.78), 0.661

(8.16), 0.666 (5.05), 0.674 (4.23), 0.680 (9.76), 0.685 (8.34), 0.690 (8.90),

0.697 (8.19), 0.702 (9.31), 0.709 (4.32), 0.721 (1.02), 1.227 (0.55), 1.288

(16.00), 1.304 (15.91), 1.898 (1.00), 1.911 (2.00), 1.918 (2.15), 1.930 (3.56),

1.942 (2.00), 1.949 (1.81), 1.961 (0.81), 2.307 (1.72), 2.318 (1.75), 2.322

(1.91), 2.326 (1.99), 2.331 (1.61), 2.390 (2.87), 2.425 (3.38), 2.444 (4.15),

2.458 (4.60), 2.465 (4.84), 2.518 (4.26), 2.522 (3.06), 2.539 (1.12), 2.608

(1.57), 2.628 (3.05), 2.636 (3.29), 2.647 (5.48), 2.664 (4.41), 2.668 (4.36),

2.673 (3.81), 2.702 (1.55), 2.723 (0.49), 3.417 (1.58), 3.433 (4.90), 3.450

(6.32), 3.466 (4.77), 3.666 (3.90), 4.243 (6.69), 4.257 (5.98), 6.926 (5.33),

6.929 (5.24), 6.939 (5.35), 6.942 (5.26), 7.174 (8.31), 7.248 (1.91), 7.311

(0.64), 7.419 (0.75), 7.544 (0.93), 7.618 (0.76), 7.833 (1.52), 8.127 (1.42),

8.247 (8.72), 8.260 (8.10), 10.573 (2.54), 12.034 (2.44).

SM: Compound 169.01 and cyclopropanecarboxylic acid

Example 170.02

embedded image

1-{4-[(1R or 1S)-1-(2-{[6-(1-{[(1RS)-2,2-dichlorocyclopropyl]methyl}-1H-

pyrazol-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-

yl}-3,3,3-trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.23 min; MS (ESIpos): m/z = 621 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.071 (2.54), 1.088 (5.35), 1.105

(2.36), 1.154 (5.03), 1.172 (10.36), 1.190 (4.99), 1.232 (0.65), 1.289 (7.05),

1.305 (7.18), 1.619 (2.05), 1.639 (4.11), 1.658 (2.54), 1.846 (2.22), 1.865

(2.34), 1.874 (2.81), 1.892 (2.25), 1.907 (1.61), 1.988 (16.00), 2.282 (0.67),

2.300 (1.76), 2.309 (1.16), 2.319 (2.26), 2.327 (3.38), 2.337 (2.15), 2.346

(2.41), 2.364 (1.70), 2.416 (1.58), 2.425 (1.70), 2.453 (1.19), 2.463 (0.78),

2.467 (0.74), 2.518 (3.18), 2.523 (2.32), 2.665 (0.64), 2.669 (0.88), 2.673

(0.64), 2.888 (0.42), 3.354 (0.90), 3.371 (2.55), 3.389 (2.61), 3.406 (0.99),

3.423 (1.80), 3.436 (3.45), 3.446 (2.18), 3.455 (2.58), 3.473 (3.51), 3.565

(0.78), 3.578 (1.32), 3.606 (3.80), 3.634 (3.55), 3.661 (1.13), 4.000 (1.22),

4.017 (3.76), 4.035 (3.74), 4.053 (1.23), 4.326 (2.89), 4.345 (2.31), 5.759

(0.52), 6.922 (2.23), 6.925 (2.25), 6.936 (2.25), 6.938 (2.29), 7.168 (3.54),

7.256 (0.73), 7.887 (0.61), 8.159 (0.54), 8.249 (3.84), 8.262 (3.68), 10.580

(0.71), 12.046 (0.78).

SM: Compound 170.01 and 3,3,3-trifluoropropanoic acid

Example 171.02

embedded image

1-(4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-7-fluoro-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.28 min; MS (ESIpos): m/z = 585 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.282 (15.89), 1.298 (16.00), 1.744

(0.44), 1.750 (0.54), 1.768 (2.52), 1.774 (1.39), 1.789 (3.94), 1.795 (2.47),

1.807 (5.88), 1.819 (7.01), 1.823 (5.97), 1.829 (8.55), 1.847 (2.97), 1.855

(3.45), 1.869 (1.68), 1.877 (2.39), 1.893 (0.93), 1.961 (2.16), 1.975 (3.23),

1.983 (4.45), 1.992 (4.04), 2.003 (4.30), 2.021 (1.88), 2.033 (0.47), 2.294

(0.88), 2.306 (1.68), 2.321 (3.05), 2.332 (3.84), 2.345 (3.32), 2.358 (2.82),

2.411 (3.87), 2.421 (4.25), 2.434 (3.08), 2.449 (2.40), 2.518 (1.79), 2.523

(1.24), 2.539 (0.87), 2.669 (0.44), 2.744 (0.97), 2.763 (2.31), 2.781 (3.05),

2.800 (2.57), 2.819 (1.15), 3.421 (4.30), 3.433 (7.79), 3.457 (5.93), 3.474

(9.37), 3.489 (4.98), 3.577 (2.96), 3.604 (8.55), 3.632 (8.02), 3.659 (2.50),

4.158 (13.39), 4.177 (13.20), 6.940 (5.18), 6.942 (5.23), 6.953 (5.23), 6.955

(5.27), 7.111 (4.90), 7.242 (1.40), 7.262 (3.00), 7.278 (2.80), 7.303 (5.13),

7.323 (2.27), 7.827 (10.80), 8.059 (8.48), 8.062 (8.19), 8.262 (6.76), 8.275

(6.36), 10.799 (1.32), 12.196 (0.41).

SM: Compound 171.01 and 3,3,3-trifluoropropanoic acid

Example 171.03

embedded image

(4-{(1R or 1S)-1-[2-({6-[1-(cyclobutylmethyl)-1H-pyrazol-4-yl]-7-fluoro-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-

yl)(cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.25 min; MS (ESIpos): m/z = 543.3 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.639 (1.18), 0.651 (3.68), 0.659

(7.90), 0.671 (4.13), 0.678 (9.28), 0.684 (6.84), 0.690 (8.36), 0.697 (8.40),

0.702 (9.69), 0.709 (4.77), 0.721 (1.19), 1.282 (15.81), 1.299 (16.00), 1.743

(0.44), 1.749 (0.53), 1.767 (2.57), 1.788 (3.99), 1.795 (2.54), 1.807 (6.01),

1.819 (7.16), 1.823 (6.10), 1.828 (8.54), 1.847 (3.06), 1.854 (3.54), 1.869

(1.71), 1.876 (2.43), 1.892 (1.87), 1.904 (2.22), 1.911 (2.35), 1.923 (3.73),

1.935 (2.31), 1.942 (2.10), 1.955 (2.15), 1.960 (2.33), 1.974 (3.31), 1.982

(4.50), 1.992 (4.15), 2.003 (4.36), 2.021 (1.91), 2.033 (0.48), 2.302 (1.75),

2.322 (1.47), 2.327 (1.52), 2.331 (1.42), 2.384 (2.72), 2.437 (2.17), 2.518

(1.96), 2.523 (1.35), 2.539 (0.96), 2.609 (0.93), 2.669 (0.46), 2.744 (0.97),

2.762 (2.34), 2.780 (3.10), 2.799 (2.58), 2.818 (1.16), 3.421 (1.54), 3.437

(4.69), 3.454 (6.68), 3.468 (4.77), 3.661 (4.11), 4.158 (13.02), 4.176 (12.81),

6.947 (5.17), 6.959 (5.25), 7.112 (6.43), 7.241 (1.73), 7.260 (3.53), 7.277

(3.37), 7.303 (6.95), 7.324 (3.19), 7.826 (10.39), 8.059 (8.30), 8.262 (6.34),

8.275 (6.09), 10.800 (5.01), 12.278 (4.74).

SM: Compound 171.01 and cyclopropanecarboxylic acid

Example 172.02

embedded image

3,3,3-trifluoro-1-{4-[(1R or 1S)-1-(2-{[7-fluoro-6-(6-methylpyrimidin-4-yl)-

1H-benzimidazol-2-yl]amino}pyridin-4-yl)ethyl)piperazin-1-yl}propan-1-

one

LC-MS (Method 2): R_t= 1.08 min; MS (ESIpos): m/z = 543 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.069 (3.62), 1.087 (7.43), 1.105

(3.67), 1.291 (5.27), 1.308 (5.29), 2.328 (1.44), 2.343 (1.39), 2.366 (1.12),

2.418 (1.49), 2.430 (1.77), 2.445 (1.37), 2.459 (1.14), 2.523 (2.62), 2.532

(16.00), 2.669 (0.45), 3.352 (1.36), 3.370 (3.73), 3.387 (3.68), 3.404 (1.34),

3.439 (2.85), 3.450 (1.85), 3.480 (3.19), 3.492 (2.72), 3.580 (1.00), 3.608

(2.85), 3.635 (2.70), 3.663 (0.88), 6.972 (1.61), 6.985 (1.66), 7.134 (2.53),

7.446 (1.88), 7.467 (2.09), 7.710 (0.96), 7.728 (1.31), 7.747 (0.85), 7.817

(2.58), 8.285 (2.01), 8.298 (1.96), 9.094 (3.76), 9.096 (3.73), 10.917 (2.79),

12.500 (1.71).

SM: Compound 172.01 and 3,3,3-trifluoropropanoic acid

Example 172.03

embedded image

cyclopropyl{4-[(1R or 1S)-1-(2-{[7-fluoro-6-(6-methylpyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}methanone

LC-MS (Method 2): R_t= 1.05 min; MS (ESIpos): m/z = 501 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.654 (1.11), 0.662 (2.46), 0.667

(1.55), 0.674 (1.25), 0.681 (2.92), 0.686 (2.44), 0.691 (2.63), 0.698 (2.45),

0.703 (2.84), 0.710 (1.32), 1.290 (4.81), 1.307 (4.86), 1.912 (0.61), 1.919

(0.66), 1.931 (1.06), 1.943 (0.59), 1.950 (0.54), 2.317 (0.51), 2.322 (0.54),

2.326 (0.54), 2.331 (0.45), 2.392 (0.80), 2.518 (0.96), 2.530 (16.00), 3.438

(0.59), 3.455 (1.87), 3.471 (2.20), 3.671 (1.17), 6.977 (1.47), 6.989 (1.47),

7.141 (1.11), 7.443 (0.76), 7.464 (0.82), 7.713 (0.46), 7.731 (0.71), 7.750

(0.43), 7.813 (2.20), 8.285 (2.07), 8.299 (1.95), 9.092 (3.64), 9.095 (3.71),

10.916 (1.11), 12.506 (0.71).

SM: Compound 172.01 and cyclopropanecarboxylic acid

Example 172.04

embedded image

{4-[(1R or 1S)-1-(2-{[7-fluoro-6-(6-methylpyrimidin-4-yl)-1H-benzimidazol-

2-yl]amino}pyridin-4-yl)ethyl]piperazin-1-yl}[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.13 min; MS (ESIpos): m/z = 569 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.163 (9.51), 1.288 (16.00), 1.303

(13.93), 2.371 (6.84), 2.668 (2.55), 3.477 (4.12), 3.575 (8.74), 6.989 (4.50),

7.150 (5.99), 7.447 (3.61), 7.467 (4.00), 7.730 (3.61), 7.817 (6.49), 8.297

(4.53), 9.097 (7.11), 10.912 (5.96), 12.496 (4.89).

SM: Compound 172.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 173.02

embedded image

3,3,3-trifluoro-1-(4-{(1R or 1S)-1-[2-({7-fluoro-6-[6-

(trifluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-

yl]ethyl}piperazin-1-yl)propan-1-one

LC-MS (Method 2): R_t= 1.28 min; MS (ESIpos): m/z = 597 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.811 (2.55), 0.828 (4.99), 0.833

(4.35), 0.855 (7.22), 0.934 (2.92), 0.950 (3.07), 1.031 (0.64), 1.049 (0.66),

1.069 (1.08), 1.086 (1.58), 1.104 (1.01), 1.133 (0.64), 1.240 (5.75), 1.293

(11.25), 1.309 (11.04), 1.393 (7.81), 1.483 (0.76), 1.515 (0.42), 1.580 (0.71),

1.705 (0.59), 2.331 (3.79), 2.344 (3.79), 2.432 (4.86), 2.446 (4.52), 2.618

(0.64), 2.669 (1.15), 3.330 (16.00), 3.370 (0.96), 3.387 (0.96), 3.483 (8.78),

3.580 (2.11), 3.608 (5.68), 3.635 (5.51), 3.662 (1.94), 5.758 (4.06), 6.985

(3.39), 6.997 (3.59), 7.147 (4.91), 7.506 (3.15), 7.527 (3.49), 7.834 (1.72),

7.852 (2.71), 7.870 (1.72), 8.293 (4.21), 8.307 (5.13), 8.317 (6.91), 9.490

(6.86), 10.986 (5.40), 12.599 (3.73).

SM: Compound 173.01 and 3,3,3-trifluoropropanoic acid

Example 173.03

embedded image

cyclopropyl(4-{(1R or 1S)-1-[2-({7-fluoro-6-[6-(trifluoromethyl)pyrimidin-4-

yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.23 min; MS (ESIpos): m/z = 555 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 0.666 (9.63), 0.692 (13.39), 0.704

(12.33), 0.826 (0.50), 0.859 (0.60), 1.144 (0.60), 1.225 (1.24), 1.296 (15.72),

1.312 (16.00), 1.925 (2.75), 1.937 (3.85), 2.323 (3.99), 2.327 (4.54), 2.331

(3.76), 2.398 (4.08), 2.523 (9.86), 2.540 (2.80), 2.620 (0.87), 2.665 (1.79),

2.669 (2.48), 2.673 (1.83), 3.466 (9.08), 3.481 (8.76), 3.503 (4.26), 3.676

(5.64), 6.992 (5.32), 7.004 (5.50), 7.177 (4.26), 7.494 (2.80), 7.513 (2.98),

7.859 (3.48), 8.294 (6.01), 8.314 (12.15), 9.487 (12.29), 10.966 (1.24), 12.561

(0.50).

SM: Compound 173.01 and cyclopropanecarboxylic acid

Example 173.04

embedded image

(4-{(1R or 1S)-1-[2-({7-fluoro-6-[6-(trifluoromethyl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)[1-

(trifluoromethyl)cyclopropyl]methanone

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 623 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 1.161 (9.24), 1.218 (3.55), 1.285

(16.00), 1.300 (14.44), 2.368 (6.31), 2.668 (1.25), 3.332 (13.26), 3.481 (4.25),

6.994 (4.45), 7.169 (5.01), 7.503 (3.26), 7.523 (3.54), 7.851 (3.29), 8.311

(8.32), 9.486 (6.19), 10.977 (5.36), 12.585 (4.43).

SM: Compound 173.01 and 1-(trifluoromethyl)cyclopropanecarboxylic acid

Example 174.01
tert-butyl 4-{(1R or 1S)-1-[2-({6-[6-(difluoromethyl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazine-1-carboxylate

embedded image

Tert-butyl 4-[(1R or 1S)-1-{2-[({2-amino-4-[6-(difluoromethyl)pyrimidin-4-yl]phenyl}carbamothioyl)amino]pyridin-4-yl}ethyl]piperazine-1-carboxylate (300 mg, see Compound 174.01.02) was solubilized in dichloromethane (6.6 ml) and DIC (240 μl, 1.5 mmol) was added. The reaction mixture was stirred overnight under inert atmosphere. The crude residue was purified, without further workup, by flash chromatography on silica gel to give 228 mg (90% purity) of the title compound.

LC-MS (Method 2): R_t=1.35 min; MS (ESIpos): m/z=551 [M+H]⁺.

1H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.29 (d, 3H), 1.34-1.42 (m, 9H), 2.23-2.34 (m, 2H), 2.35-2.44 (m, 2H), 3.33 (s, 4H), 3.45 (q, 1H), 6.86-7.21 (m, 3H), 7.38-7.69 (m, 1H), 7.98-8.23 (m, 2H), 8.26-8.53 (m, 2H), 9.29 (s, 1H), 10.83 (br s, 1H), 12.39 (br s, 1H).

Example 175.01
tert-butyl 4-[(2-{[6-(2-chlorothiophen-3-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

tert-Butyl 4-{[2-({[4-amino-6-(2-chlorothiophen-3-yl)pyridin-3-yl]carbamothioyl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (630 mg, see Compound 107.01.02) and EDCI (216 mg) were stirred in dichloromethane (15 ml) under inert atmosphere over the weekend at rt. The mixture was concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel to give 160 mg of the title compound.

LC-MS (Method 2): R_t=1.44 min; MS (ESIpos): m/z=525 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6) δ[ppm]: 1.395 (16.00), 1.415 (1.94), 2.323 (0.56), 2.327 (0.68), 2.332 (0.68), 2.337 (0.69), 2.347 (1.16), 2.359 (1.40), 2.371 (1.01), 2.518 (1.71), 2.523 (1.21), 2.669 (0.44), 3.498 (1.76), 5.759 (5.93), 6.918 (0.50), 6.931 (0.50), 7.229 (0.42), 7.234 (0.54), 7.248 (0.61), 7.530 (0.56), 7.543 (0.47), 7.552 (0.41), 8.255 (0.67), 8.268 (0.63).

Example 176.01
tert-butyl 4-[(2-{[6-(morpholin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

embedded image

Tert-butyl 4-{[2-({[2-amino-4-(morpholin-4-yl)phenyl]carbamothioyl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (380 mg, see Compound 176.01.03) and EDCI (138 mg) were stirred in dichloromethane (13 ml) under inert atmosphere overnight at rt. The mixture was concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel to give 43.0 mg (95% purity) of the title compound.

LC-MS (Method 2): R_t=1.19 min; MS (ESIpos): m/z=494 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.39 (s, 9H), 2.33-2.37 (m, 4H), 3.00-3.07 (m, 4H), 3.33-3.37 (m, 4H), 3.48 (s, 2H), 3.73-3.79 (m, 4H), 6.74 (br s, 1H), 6.85-7.10 (m, 2H), 7.14 (br s, 1H), 7.18-7.37 (m, 1H), 8.21 (d, 1H), 10.36-10.54 (m, 1H), 11.84 (br s, 1H).

The Example compounds shown in table 20 below were prepared according to the following general procedure:

Compound 01.04 (1 eq.) and the respective heteroaryl halide (1.3 eq) were solubilised in DME and an aqueous solution of Na₂CO₃(2.5 eq, 2M) was added. The mixture was sparged with argon and 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.1 eq) was added. The reaction mixture was stirred at 150° C. for 2 hours (if the reaction was not complete, 1.3 eq. of heteroaryl halide as well as 0.1 eq. of catalyst were added and the reaction mixture was stirred between 2 and 20 additional hours at 150° C.). The reaction mixture was then filtered through silicone filter and concentrated under reduced pressure. The crude mixture was purified without work up by preparative HPLC to the desired compound.

TABLE 20

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 177.01

embedded image

tert-butyl 4-{[2-({6-[2-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.41 min; MS (ESIpos): m/z = 556.6 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 1.40-1.43 (m,

1H), 1.99 (m, 8H), 2.36 (br t, 4H), 3.35 (br s, 4H), 3.49-3.51 (m, 2H),

6.34 (d, 1H), 6.49 (d, 1H), 6.92 (d, 1H), 7.18 (s, 1H), 8.17 (br d, 1H),

8.20-8.24 (t, 2H), 8.26 (d, 1H), 10.68 (br s, 1H), 12.14-12.27 (m, 1H).

Example 178.01

embedded image

tert-butyl 4-{[2-({6-[2-(dimethylamino)-6-methylpyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.47 min; MS (ESIpos): m/z = 544.6 [M + H]⁺

Example 179.01

embedded image

tert-butyl 4-{[2-({6-[5-chloro-6-(dimethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.3 min; MS (ESIpos): m/z = 564 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.39 (s, 9H), 2.36 (br t, 4H),

3.18 (s, 6H), 3.35 (br s, 4H), 3.50 (s, 2H), 6.93 (d, 1H), 7.17 (s, 1H),

7.40 (br s, 1H), 7.45-7.56 (m, 1H), 7.66-7.93 (m, 1H), 8.26 (d, 1H),

8.50 (s, 1H), 10.71 (br d, 1H), 12.25 (br d, 1H).

Example 180.01

embedded image

tert-butyl 4-[(2-{[6-(pyrimidin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.24 min; MS (ESIpos): m/z = 487 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ ppm 1.40 (s, 9H) 2.33-2.41 (m, 4H)

3.35 (br s, 4H) 3.50 (s, 2H) 6.94 (d, 1H) 7.17 (br s, 1H) 7.30-7.37 (m,

1H) 7.37-7.61 (m, 1H) 8.19 (br s, 1H) 8.27 (d, 1H) 8.36-8.62 (m, 1H)

8.84 (d, 2H) 10.74 (s, 1H) 12.28 (b rs, 1H)

Example 181.01

embedded image

tert-butyl 4-{[2-({6-[4-(dimethylamino)pyrimidin-2-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 2.32 min; MS (ESIpos): m/z = 530 [M + H]⁺

¹H-NMR (400 MHz, CHLOROFORM-d): δ [ppm] = 1.43 (s, 9H), 2.33 (br

s, 4H), 3.15-3.27 (m, 5H), 3.30-3.39 (m, 4H), 3.44 (br s, 2H), 6.25-6.38

(m, 1H), 6.86-6.99 (m, 1H), 7.19 (s, 1H), 7.46-7.73 (m, 1H), 8.23-8.77

(m, 4H), 12.40 (br s, 1H), 12.74 (br s, 1H).

Example 182.01

embedded image

tert-butyl 4-[(2-{[6-(5,7-dihydrofuro[3,4-d]pyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.2 min; MS (ESIpos): m/z = 529 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.35-1.43 (m, 9H), 2.36 (br t,

4H), 3.35 (br s, 4H), 3.51 (s, 2H), 4.99-5.04 (m, 2H), 5.49 (s, 2H), 6.96

(br d, 1H), 7.17 (s, 1H), 7.43-7.84 (m, 3H), 7.91-8.15 (m, 1H), 8.26-8.32

(m, 1H), 9.09 (s, 1H), 10.67-10.89 (m, 1H).

Example 183.01

embedded image

tert-butyl 4-{[2-({6-[5-methyl-6-(trifluoromethyl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.39 min; MS (ESIpos): m/z = 569.5 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.34-1.47 (m, 9H), 2.31-2.42

(m, 4H), 2.52 (br s, 3H), 3.35 (br s, 4H), 3.43-3.56 (m, 2H), 6.90-7.00

(m, 1H), 7.16-7.21 (m, 1H), 7.28-7.94 (m, 3H), 8.27 (d, 1H), 9.24 (s,

1H), 10.77 (br s, 1H), 12.31 (br s, 1H).

Example 184.01

embedded image

tert-butyl 4-[(2-{[6-(5-methylpyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.2 min; MS (ESI pos): m/z = 501.5 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.35-1.43 (m, 9H), 2.31-2.39

(m, 4H), 2.39-2.47 (m, 3H), 3.17-3.41 (m, 4H), 3.50 (s, 2H), 6.94 (d,

1H), 7.18 (s, 1H), 7.33-7.51 (m, 2H), 7.91 (br s, 1H), 8.27 (d, 1H), 8.68

(s, 1H), 9.04 (s, 1H), 10.74 (br s, 1H), 12.26 (br s, 1H).

Example 185.01

embedded image

tert-butyl 4-[(2-{[6-(6-chloro-2-methoxypyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.37 min; MS (ESIpos): m/z = 551 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ ppm 1.40 (s, 9H) 2.33-2.41 (m, 4H)

3.34-3.39 (m, 3H) 3.51 (br s, 2H) 4.04 (s, 3H) 6.96 (br d, 1H) 7.19 (s,

1H) 7.36-7.66 (m, 1H) 7.72-7.94 (m, 1H) 7.99 (dd, 1H) 8.23-8.50

(m, 2H) 10.73-10.91 (m, 1H) 12.37 (br s, 1H)

Example 186.01

embedded image

tert-butyl 4-[(2-{[6-(6-chloro-2-methylpyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 4): R_t= 1.35 min; MS (ESIpos): m/z = 535 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ ppm 1.40 (s, 9H) 2.36 (br s, 4H) 2.64-

2.68 (m, 3H) 3.35-3.35 (m, 4H) 3.51 (s, 2H) 6.95 (d, 1H) 7.18 (s, 1H)

7.35-7.72 (m, 1H) 7.98 (dd, 1,5H) 8.07 (br s, 0.5H) 8.27 (d, 1.5H) 8.45

(br s, 0.5H) 10.83 (br s, 1H) 12.22-12.47 (m, 1H)

Example 187.01

embedded image

tert-butyl 4-[(2-{[6-(6-chloro-5-fluoropyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.37 min; MS (ESIpos): m/z = 539 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]: 1.065 (0.73), 1.172 (0.67), 1.299

(8.15), 1.394 (15.51), 1.395 (16.00), 1.987 (1.24), 2.322 (0.56),, 2.326 (0.77),

2.332 (0.63), 2.352 (1.34), 2.363 (1.42), 2.518 (3.22), 2.522 (2.20), 2.664

(0.49), 2.668 (0.68), 2.673 (0.48), 3.492 (1.11), 3.510 (1.21), 5.758 (1.14),

7.173 (0.64), 8.084, (1.70), 8.238 (0.53), 8.252 (0.52), 8.276 (0.55), 8.289

(0.52), 8.884 (0.41).

Example 188.01

embedded image

tert-butyl 4-[(2-{[6-(3-chloropyrazin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.25 min; MS (ESIpos): m/z = 521 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ ppm 1.07 (s, 9H) 2.36 (br t, 4H) 3.35

(br s, 4H) 3.50 (s, 2H) 6.94 (dd, 1H) 7.18 (s, 1H) 7.40-7.47 (m, 1H)

7.93-8.03 (m, 1H) 8.27 (d, 1H) 8.46 (br s, 1H) 8.74 (d, 1H) 10.75 (br s,

1H) 12.24-12.34 (m, 1H)

The Example compounds shown in table 21 below were prepared as follows:

The respective chloride (example 145.01.01 or 145.01.02, if not specified otherwise in the table below) was solubilised in dioxane and the respective amine (4 to 6 eq) was added. In some cases K₂CO₃or DIPEA (4 eq.) was used. The reaction mixture was stirred 16 hours at reflux. The reaction mixture was then filtered, concentrated under reduced pressure and purified by preparative HPLC. or

The respective chloride (example 145.01.01 or 145.01.02, if not specified otherwise in the table below) was solubilised in dioxane and the respective alcohol (2 to 6 eq) and NaH (6 eq.) was added. The reaction mixture was stirred 1 to 3 hours at rt. The reaction was stopped by the addition of water and the aqueous phase was extracted three times with DCM. The organic phase was dried (silicone filter), concentrated under reduced pressure and purified by preparative HPLC.

TABLE 21

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 189.01

embedded image

From example 185.01

tert-butyl 4-{[2-({6-[6-(dimethylamino)-2-methoxypyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): Rt = 1.35 min; MS (ESIpos): m/z = 560 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.40 (s, 9H), 2.33-2.39 (m,

4H), 3.13 (s, 6H), 3.35 (br s, 4H), 3.50 (s, 2H), 3.89-3.93 (m, 2H), 6.73-

6.84 (m, 1H), 6.90-6.96 (m, 1H), 7.15-7.23 (m, 1H), 7.34-7.57 (m,

1H), 7.83-7.93 (m, 1H), 8.10-8.34 (m, 1H), 8.26 (d, 1H), 10.63-10.76

(m, 1H), 12.18-12.29 (m, 1H).

Example 190.01

embedded image

From example 186.01

tert-butyl 4-{[2-({6-[6-(dimethylamino)-2-methylpyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): Rt = 1.33 min; MS (ESIpos): m/z = 544 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.36-1.42 (m, 9H), 2.33-2.39

(m, 4H), 2.45 (s, 3H), 3.13 (s, 5H), 3.34-3.37 (m, 1H), 3.35 (br s, 1H),

3.50 (s, 2H), 6.85-6.96 (m, 2H), 7.18 (br s, 1H), 7.52-7.66 (m, 1H),

7.86 (br s, 1H), 8.08-8.35 (m, 1H), 8.25 (d, 1H), 10.71 (br s, 1H), 12.16-

12.31 (m, 1H).

Example 191.01

embedded image

tert-butyl 4-({2-[(6-{6-[(cyclobutylmethyl)amino]-5-fluoropyrimidin-

4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.39 min; MS (ESIpos): m/z = 588 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.39 (s, 9H) 1.69-1.90 (m, 4H)

1.99-2.06 (m, 2H) 2.31-2.42 (m, 4H) 2.63-2.70 (m, 1H) 3.34-3.41

(m, 4H) 3.42-3.57 (m, 4H) 6.90-6.97 (m, 1H) 7.17 (s, 1H) 7.37-7.59

(m, 1H) 7.63-7.81 (m, 2H) 7.91-8.33 (m, 3H) 10.73 (br s, 1H) 12.28

(br s, 1H)

Example 192.01

embedded image

tert-butyl 4-{[2-({6-[6-(cyclopropylamino)-5-fluoropyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.22 min; MS (ESIneg): m/z = 558 [M + H]⁻

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.56-0.78 (m, 4H) 1.39 (s, 9H)

2.36 (br t, 4H) 2.86 (tq, 1H) 3.35 (br s, 4H) 3.50 (s, 2H) 6.93 (dd, 1H)

7.17 (s, 1H) 7.36-7.62 (m, 1H) 7.66-7.75 (m, 0.5H) 7.77 (br s, 1H)

8.21 (br d, 0.5H) 8.27 (d, 1H) 8.36 (d, 1H) 10.74 (br s, 1H) 12.29 (br s, 1H)

Example 193.01

embedded image

tert-butyl 4-{[2-({6-[5-fluoro-6-(propan-2-ylamino)pyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.31 min; MS (ESIpos): m/z = 562 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.23 (d, 6H) 1.40 (s, 9H) 2.36 (br

t, 4H) 3.34-3.40 (m, 4H) 3.50 (s, 2H) 4.23-4.35 (m, 1H) 6.93 (dd, 1H)

7.17 (s, 1H) 7.39 (br d, 1H) 7.55 (br s, 1H) 7.74 (br s, 1H) 8.17 (br s,

0.5H) 8.27 (d, 1H) 8.30 (d, 1H) 8.54 (br s, 0.5H) 10.74 (br s, 1H) 12.28

(br s, 1H)

Example 194.01

embedded image

tert-butyl 4-{[2-({6-[6-(cyclobutylamino)-5-fluoropyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.33 min; MS (ESIpos): m/z = 574 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.39 (s, 9H) 1.62-1.76 (m, 2H)

2.03-2.19 (m, 2H) 2.22-2.31 (m, 2H) 2.31-2.42 (m, 5H) 3.34-3.42

(m, 4H) 3.50 (s, 2H) 4.51-4.62 (m, 1H) 6.89-6.97 (m, 1H) 7.17 (s, 1H)

7.37-7.64 (m, 1H) 7.65-7.79 (m, 1H) 7.83 (br d, 1H) 7.95 (br s, 0.5H)

8.14-8.20 (m, 0.5H) 8.24-8.32 (m, 2H) 10.74 (br s, 1H) 12.28 (br s, 1H)

Example 195.01

embedded image

tert-butyl 4-({2-[(6-{6-[(cyclopropylmethyl)amino]-5-

fluoropyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-

yl}methyl)piperazine-1-carboxylate

LC-MS (Method 2): R_t= 1.32 min; MS (ESIpos): m/z = 574 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.22-0.34 (m, 2H) 0.39-0.51

(m, 2H) 1.14-1.19 (m, 1H) 1.40 (s, 9H) 2.33-2.41 (m, 4H) 2.52 (d, 2H)

3.24-3.31 (m, 2H) 3.35-3.40 (m, 2H) 3.50 (s, 2H) 6.91-6.99 (m, 1H)

7.17 (s, 1H) 7.36-7.48 (m, 0.5H) 7.51-7.64 (m, 0.5H) 7.75 (br t, 2H)

7.92-8.00 (m, 0.5H) 8.21 (br d, 0.5H) 8.25-8.33 (m, 2H) 10.73 (br s,

1H) 12.29 (br s, 1H)

Example 196.01

embedded image

From example 188.01

tert-butyl 4-{[2-({6-[3-(dimethylamino)pyrazin-2-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.28 min; MS (ESIpos): m/z = 530 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.40 (s, 9H) 2.36 (br t, 4H) 2.73

(s, 6H) 3.35 (br s, 4H) 3.50 (s, 2H) 7.17 (s, 1H) 7.32-7.46 (m, 1H) 7.50

(br d, 1H) 7.65-7.93 (m, 1H) 8.04 (s, 1H) 8.07 (s, 1H) 8.26 (d, 1H)

10.67 (br s, 1H) 12.12-12.22 (m, 1H)

Example 197.01

embedded image

tert-butyl 4-[(1R or 1S)-1-{2-[(6-{6-

[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazine-1-

carboxylate

LC-MS (Method 2): R_t= 1.38 min; MS (ESIpos): m/z = 584 [M + H]⁺

Example 198.01
tert-butyl 4-{[2-({6-[6-(3,6-dihydro-2H-pyran-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Tert-butyl 4-[(2-{[6-(6-chloropyrimidin-4-yl)-1H-benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazine-1-carboxylate (150 mg see Example 145.01.01), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyran (181 mg), an aqueous solution of Na₂CO₃(430 μl, 2.0 M) and 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (23.5 mg, 28.8 μmol) were stirred in 1,4-dioxane (3.0 ml)/water (600 μl) for 3 h at 110° C. The mixture was then concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel to give 30.1 mg (97% purity) of the title compound.

LC-MS (Method 2): R_t=1.24 min; MS (ESIpos): m/z=569 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm]=1.40 (s, 9H), 2.36 (br t, 4H), 2.62 (br s, 2H), 3.35-3.42 (m, 4H), 3.51 (s, 2H), 3.86 (t, 2H), 4.34 (br d, 2H), 6.95 (br s, 1H), 7.19 (s, 2H), 7.41-7.62 (m, 1H), 7.99-8.14 (m, 2H), 8.27 (d, 1H), 8.29-8.46 (m, 1H), 9.10 (d, 1H), 10.70-10.85 (m, 1H), 12.33 (br s, 1H).

Example 199.01
tert-butyl 4-{[2-({6-[6-(tetrahydro-2H-pyran-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate

embedded image

Tert-butyl 4-{[2-({6-[6-(3,6-dihydro-2H-pyran-4-yl)pyrimidin-4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazine-1-carboxylate (30.1 mg) was solubilised in ethanol (2.0 ml), and the reaction vessel was purged three times with argon. Pd/C (1.68 g, 10% purity) was added to the mixture, and the vessel was purged three times with argon and three times with hydrogen gas. The reaction mixture was stirred under hydrogen atmosphere at rt overnight. The reaction mixture was filtered through Celite® and concentrated under reduced pressure. The crude title compound (27 mg) was used without further purification.

LC-MS (Method 2): R_t=1.20 min; MS (ESIpos): m/z=571 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.40 (s, 9H), 1.85 (br d, 4H), 2.36 (br t, 4H), 2.94-3.05 (m, 1H), 3.34-3.40 (m, 4H), 3.40-3.55 (m, 4H), 3.95-4.04 (m, 2H), 6.94 (br d, 1H), 7.20 (s, 1H), 7.38-7.65 (m, 1H), 7.98 (br d, 2H), 8.21-8.45 (m, 2H), 9.08 (d, 1H), 10.78 (br d, 1H), 12.35 (d, 1H).

The Example compounds shown below in table 22 were prepared according to the following general procedure:

The respective amine (1 eq.; see Compounds 174.01 to 198.01, respectively; Table 6), 3,3,3-trifluoropropionic acid (1.5 eq), NaHCO₃(6 eq.) and HATU (1.5 eq.) were solubilised in DMF and the reaction mixture was stirred at rt between 2 and 48 hours. The crude mixture was directly purified by preparative HPLC without workup to give the respective title compound.

TABLE 22

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 174.02

embedded image

1-(4-{(1R or 1S)-1-[2-({6-[6-(difluoromethyl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 4): R_t= 1.13 min; MS (ESIpos): m/z = 561 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.26-1.35 (m, 3H), 2.28-2.46

(m, 4H), 3.39-3.53 (m, 5H), 3.53-3.72 (m, 2H), 6.93-7.01 (m, 1H),

7.01-7.05 (m, 1H), 7.17-7.21 (m, 1H), 7.42-7.69 (m, 1H), 7.97-8.11

(m, 1H), 8.15-8.25 (m, 1H), 8.25-8.35 (m, 2H), 8.49 (br s, 1H), 9.25-

9.34 (m, 1H), 10.70-11.08 (m, 1H), 12.26-12.57 (m, 1H).

Example 175.02

embedded image

1-{4-[(2-{[6-(2-chlorothiophen-3-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.32 min; MS (ESIpos): m/z = 535 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.40-2.45 (m,

2H), 3.45-3.49 (m, 2H), 3.49-3.54 (m, 4H), 3.65 (q, 2H), 6.93 (dd,

1H), 7.19 (s, 1H), 7.24 (br s, 2H), 7.36-7.78 (m, 3H), 8.27 (d, 1H),

10.66 (br s, 1H), 12.18 (br d, 1H).

Example 176.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(6-methoxy-2-methylpyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-

1-one

LC-MS (HTpost2_basic): R_t= 1.14 min; MS (ESIpos): m/z = 541.2

[M + H]⁺

Example 177.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[2-(pyrrolidin-1-yl)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)propan-

1-one

LC-MS (Method 2): R_t= 1.21 min; MS (ESIpos): m/z = 566.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.99 (br s, 4H), 2.40 (dt, 4H),

3.43-3.54 (m, 7H), 3.65 (q, 3H), 6.34 (d, 1H), 6.93 (d, 1H), 7.19 (s,

1H), 7.29-7.55 (m, 1H), 8.17 (br d, 1H), 8.22 (d, 1H), 8.27 (d, 1H), 8.33-

8.57 (m, 1H), 10.69 (br s, 1H), 12.20 (br s, 1H).

Example 178.02

embedded image

1-(4-{[2-({6-[2-(dimethylamino)-6-methylpyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.29 min; MS (ESIpos): m/z = 554.7 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.34 (s, 3H), 2.40 (dt, 4H), 3.21

(s, 6H), 3.43-3.54 (m, 6H), 3.65 (q, 2H), 6.94 (br d, 1H), 6.98-7.12

(m, 1H), 7.20 (br s, 1H), 7.32-7.60 (m, 1H), 7.86 (dd, 1H), 8.08-8.39

(m, 1H), 8.27 (d, 1H), 10.75 (br s, 1H), 12.26 (br s, 1H).

Example 179.02

embedded image

1-(4-{[2-({6-[5-chloro-6-(dimethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 4) R_t= 1.14 min; MS (ESIpos): m/z = 574 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.41-2.45 (m,

2H), 3.18 (s, 6H), 3.45-3.49 (m, 2H), 3.50 (br d, 2H), 3.52 (s, 2H), 3.65

(q, 2H), 6.94 (d, 1H), 7.19 (s, 1H), 7.40 (br s, 1H), 7.44-7.59 (m, 1H),

7.67-7.95 (m, 1H), 8.27 (d, 1H), 8.50 (s, 1H), 10.71 (br d, 1H), 12.20-

12.30 (m, 1H).

Example 180.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(pyrimidin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-1-one

LC-MS (Method 4): R_t= 1 min; MS (ESIpos): m/z = 497 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.41 (dt, 4H) 3.41-3.49 (m, 2H)

3.49-3.57 (m, 4H) 3.65 (q, 2H) 6.95 (dd, 1H) 7.19 (s, 1H) 7.33 (t, 1H)

7.47 (br s, 0.5H) 8.19 (br d, 1H) 8.28 (d, 1H) 8.52 (br s, 0.5H) 8.84 (d,

2H) 10.76 (br s, 1H) 12.28 (br s, 1H)

Example 181.02

embedded image

1-(4-{[2-({6-[4-(dimethylamino)pyrimidin-2-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 4): R_t= 1.1 min; MS (ESIpos): m/z = 540.2 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.40 (dt, 4H) 3.17 (br s, 6H) 3.42-

3.49 (m, 2H) 3.49-3.56 (m, 4H) 3.65 (q, 2H) 6.53 (d, 1H) 6.93 (d, 1H)

7.19 (s, 1H) 7.30-7.57 (m, 1H) 8.10-8.23 (m, 1H) 8.25 (d, 1H) 8.27 (d,

1H) 8.29-8.57 (m, 1H) 10.69 (br s, 1H) 12.13-12.25 (m, 1H)

Example 182.02

embedded image

1-{4-[(2-{[6-(5,7-dihydrofuro[3,4-d]pyrimidin-4-yl)-1H-benzimidazol-

2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}-3,3,3-

trifluoropropan-1-one

LC-MS (Method 4): R_t= 0.97 min; MS (ESIpos): m/z = 539 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d6) δ [ppm]: 2.323 (0.99), 2.327 (1.37), 2.331

(1.01), 2.373 (3.99), 2.385 (6.04), 2.397 (4.42), 2.415 (4.04), 2.427 (5.74),

2.438 (4.47), 2.518 (5.36), 2.523 (3.52), 2.665 (0.96), 2.669 (1.35), 2.673

(0.94), 3.372 (0.70), 3.462 (3.99), 3.474 (5.52), 3.485 (4.82), 3.498 (4.80),

3.510 (5.77), 3.532 (16.00), 3.611 (2.74), 3.638 (7.50), 3.666 (7.14), 3.693

(2.27), 4.049 (2.69), 4.976 (0.54), 5.014 (14.70), 5.488 (12.52), 5.758 (0.99),

6.961 (3.03), 7.189 (6.82), 7.456 (1.55), 7.476 (1.80), 7.595 (0.56), 7.630

(1.82), 7.782 (1.57), 7.802 (1.35), 7.940 (0.96), 8.116 (2.65), 8.290 (3.41),

8.302 (2.83), 9.095 (4.51), 10.770 (0.52), 10.851 (1.37), 12.343 (3.68).

Example 183.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[5-methyl-6-(trifluoromethyl)pyrimidin-4-

yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)propan-1-one

LC-MS (Method 4): R_t= 1.19 min; MS (ESIpos): m/z = 579 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.35-2.39 (m, 1H), 2.38 (br t,

1H), 2.43 (br t, 2H), 2.52 (br d, 3H), 3.44-3.52 (m, 4H), 3.53 (s, 3H),

3.65 (q, 2H), 6.95 (d, 1H), 7.20 (s, 1H), 7.27-7.64 (m, 1H), 7.64-7.94

(m, 2H), 8.28 (d, 1H), 9.24 (s, 1H), 10.78 (br s, 1H), 12.25 (br s, 1H).

Example 184.02

embedded image

3,3,3-trifluoro-1-{4-[(2-{[6-(5-methylpyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}propan-

1-one

LC-MS (Method 4): R_t= 0.98 min; MS (ESIpos): m/z = 511 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.34-2.46 (m, 7H), 3.42-3.57

(m, 6H), 3.65 (q, 2H), 6.94 (d, 1H), 7.19 (s, 1H), 7.31-8.02 (m, 3H),

8.28 (d, 1H), 8.68 (s, 1H), 9.04 (s, 1H), 10.74 (br s, 1H), 12.26 (br s, 1H).

Example 189.02

embedded image

1-(4-{[2-({6-[6-(dimethylamino)-2-methoxypyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.18 min; MS (ESIpos): m/z = 570 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br t, 2H), 2.40-2.46 (m,

2H), 3.13 (s, 6H), 3.43-3.55 (m, 6H), 3.65 (q, 2H), 3.91 (s, 3H), 6.73-

6.85 (m, 1H), 6.94 (br d, 1H), 7.20 (br s, 1H), 7.34-7.58 (m, 1H), 7.87

(br s, 1H), 8.11-8.35 (m, 1H), 8.27 (d, 1H), 10.63-10.78 (m, 1H),

12.22 (br d, 1H).

Example 190.02

embedded image

1-(4-{[2-({6-[6-(dimethylamino)-2-methylpyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.15 min; MS (ESIpos): m/z = 554 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 2.38 (br s, 3H), 2.41-2.45 (m,

2H), 2.46 (s, 3H), 3.14 (s, 6H), 3.43-3.55 (m, 6H), 3.65 (q, 3H), 6.89-

6.97 (m, 2H), 7.19 (s, 1H), 7.46 (br s, 1H), 7.53 (br s, 1H), 7.53-7.65

(m, 1H), 7.85 (br d, 1H), 8.26 (d, 1H), 10.73 (br s, 1H), 12.29 (br s, 1H).

Example 191.02

embedded image

1-[4-({2-[(6-{6-[(cyclobutylmethyl)amino]-5-fluoropyrimidin-4-yl}-

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-

3,3,3-trifluoropropan-1-one

LC-MS (Method 4): R_t= 1.23 min; MS (ESIpos): m/z = 598 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.69-1.80 (m, 2H) 1.80-1.90

(m, 2H) 1.95-2.05 (m, 2H) 2.40 (dt, 4H) 2.58-2.66 (m, 1H) 3.42-3.49

(m, 4H) 3.49-3.56 (m, 4H) 3.65 (q, 2H) 6.94 (d, 1H) 7.18 (br s, 1H)

7.39-7.61 (m, 1H) 7.63-7.82 (m, 2H) 7.92-8.21 (m, 1H) 8.24-8.31

(m, 2H) 10.74 (br s, 1H) 12.22-12.31 (m, 1H)

Example 192.02

embedded image

1-(4-{[2-({6-[6-(cyclopropylamino)-5-fluoropyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS (Method 2): R_t= 1.04 min; MS (ESIpos): m/z = 570 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.58-0.65 (m, 2H) 0.68-0.81

(m, 2H) 2.40 (dt, 4H) 2.86 (tq, 1H) 3.43-3.57 (m, 6H) 3.65 (q, 2H) 6.94

(d, 1H) 7.18 (br s, 1H) 7.42 (br d, 0.5H) 7.53-7.73 (m, 0.5H) 7.78 (br s,

0.5H) 7.89-8.22 (m, 1.5H) 8.27 (d, 1H) 8.36 (d, 1H) 10.69- 10.78 (m,

1H) 12.23-12.33 (m, 1H)

Example 193.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[5-fluoro-6-(propan-2-ylamino)pyrimidin-

4-yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)propan-1-one

LC-MS (Method 4): R_t= 1.13 min; MS (ESIpos): m/z = 572 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.23 (d, 6H) 2.40 (dt, 4H) 3.48 (dt,

4H) 3.53 (s, 2H) 3.65 (q, 2H) 4.24-4.36 (m, 1H) 6.94 (d, 1H) 7.19 (br s,

1H) 7.36-7.42 (m, 1H) 7.41-7.61 (m, 1H) 7.65-7.80 (m, 1H) 7.92-

8.20 (m, 1H) 8.28 (d, 1H) 8.30 (d, 1H) 10.69-10.77 (m, 1H) 12.22-

12.32 (m, 1H)

Example 194.02

embedded image

1-(4-{[2-({6-[6-(cyclobutylamino)-5-fluoropyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-

trifluoropropan-1-one

LC-MS(Method 4): R_t= 1.16 min; MS (ESIpos): m/z = 584 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 1.65-1.75 (m, 2H) 2.06-2.17

(m, 2H) 2.22-2.31 (m, 2H) 2.35-2.46 (m, 4H) 3.43-3.56 (m, 6H) 3.65

(q, 2H) 4.56 (sxt, 1H) 6.94 (d, 1H) 7.18 (br s, 1H) 7.39-7.61 (m, 1H)

7.66-7.80 (m, 1H) 7.83 (br d, 1H) 7.89-8.22 (m, 1H) 8.24-8.32 (m,

2H) 10.74 (br s, 1H) 12.20-12.34 (m, 1H)

Example 195.02

embedded image

1-[4-({2-[(6-{6-[(cyclopropylmethyl)amino]-5-fluoropyrimidin-4-yl}

1H-benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-yl]-

3,3,3-trifluoropropan-1-one

LC-MS (Method 4): R_t= 1.15 min; MS (ESIpos): m/z = 584 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.24-0.31 (m, 2H) 0.42-0.48

(m, 2H) 1.09-1.19 (m, 1H) 2.40 (dt, J = 16.22, 4.69 Hz, 4H) 3.27-

3.32 (m, 2H) 3.48 (dt, J = 29.70, 4.91 Hz, 4H) 3.53 (s, 2H) 3.65 (d,

J = 11.15 Hz, 2H) 6.95 (d, J = 5.32 Hz, 1H) 7.18 (br s, 1H) 7.39-7.61

(m, 1H) 7.66-7.81 (m, 2H) 7.95 (br s, 0.5H) 8.20 (s, 0.5H) 8.29 (d,

J = 9.42 Hz, 1H) 10.69-10.78 (m, 1H) 12.24-12.32 (m, 1H)

Example 196.02

embedded image

1-(4-{[2-({6-[3-(dimethylamino)pyrazin-2-yl]-1H-benzimidazol-2-

yl}amino)pyridin-4-yl]methyl}piperazin-1-yl)-3,3,3-trifluoropropan-

1-one

LC-MS (Method 2): R_t= 1.1 min; MS (ESIpos): m/z = 540 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.40 (dt, 4H) 2.73 (s, 6H) 3.41-

3.49 (m, 2H) 3.49-3.55 (m, 4H) 3.65 (q, 2H) 6.93 (d, 1H) 7.19 (s, 1H)

7.33-7.44 (m, 1H) 7.50 (br d, 1H) 7.65-7.93 (m, 1H) 8.04 (d, 1H) 8.05-

8.08 (m, 1H) 8.27 (d, 1H) 10.68 (br s, 1H) 12.18 (br s, 1H)

Example 199.02

embedded image

3,3,3-trifluoro-1-(4-{[2-({6-[6-(tetrahydro-2H-pyran-4-yl)pyrimidin-4-

yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)propan-1-one

LC-MS (Method 2): R_t= 1.03 min; MS (ESIpos): m/z = 581 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 1.78-1.92 (m, 4H), 2.35-2.46

(m, 4H), 2.94-3.05 (m, 1H), 3.42-3.56 (m, 8H), 3.65 (q, 2H), 3.94-

4.04 (m, 2H), 6.95 (t, 1H), 7.20 (s, 1H), 7.39-7.63 (m, 1H), 7.86-8.02

(m, 2H), 8.21-8.46 (m, 2H), 9.08 (d, 1H), 10.78 (br d, 1H), 12.30 (br d, 1H).

The Example compounds shown below in table 23 were prepared according to the following general procedure: The respective amine (1 eq.; see Compounds 174.01 to 198.01, respectively; Table 6), cyclopropanecarboxylic acid (1.5 eq), NaHCO₃(6 eq.) and HATU (1.5 eq.) were solubilised in DMF and the reaction mixture was stirred at rt between 2 and 48 hours. The crude mixture was directly purified by preparative HPLC without workup to give the respective title compounds.

TABLE 23

Structure

IUPAC-Name

LC-MS (method): Retention time; Mass found

Example

¹H-NMR

Example 174.03

embedded image

cyclopropyl(4-{(1R or 1S)-1-[2-({6-[6-(difluoromethyl)pyrimidin-4-

yl]-1H-benzimidazol-2-yl}amino)pyridin-4-yl]ethyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.09 min; MS (ESIpos): m/z = 519 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.61-0.77 (m, 4H), 1.30 (d,

3H), 1.86-1.98 (m, 1H), 2.24-2.48 (m, 4H), 3.39-3.55 (m, 3H), 3.67

(br s, 2H), 6.98 (dd, 1H), 7.00-7.16 (m, 1H), 7.22 (s, 1H), 7.53 (br s,

1H), 8.04 (dd, 1H), 8.25 (br s, 1H), 8.29 (d, 1H), 8.42 (br s, 1H), 9.29 (s,

1H), 10.82 (br s, 1H), 12.38 (br s, 1H).

Example 175.03

embedded image

{4-[(2-{[6-(2-chlorothiophen-3-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}(cyclopropyl)methanone

LC-MS (Method 4): R_t= 1.27 min; MS (ESIpos): m/z = 493 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.67-0.75 (m, 4H), 1.92-2.00

(m, 1H), 2.36 (br s, 2H), 2.45 (br s, 2H), 3.52 (s, 4H), 3.71 (br s, 2H),

6.94 (dd, 1H), 7.19 (br s, 1H), 7.24 (br s, 2H), 7.37-7.79 (m, 3H), 8.27

(d, 1H), 10.66 (br s, 1H), 12.19 (br d, 1H).

Example 179.03

embedded image

(4-{[2-({6-[5-chloro-6-(dimethylamino)pyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)(cyclopropyl)methanone

LC-MS (Method 4): R_t= 1.10 min; MS (ESIpos): m/z = 532 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.74 (m, 4H), 1.91-2.01

(m, 1H), 2.36 (br s, 2H), 2.44 (br s, 2H), 3.18 (s, 6H), 3.46-3.54 (m,

4H), 3.71 (br s, 2H), 6.95 (dd, 1H), 7.19 (s, 1H), 7.40 (br s, 1H), 7.44-

7.58 (m, 1H), 7.66-7.95 (m, 1H), 8.27 (d, 1H), 8.50 (s, 1H), 10.73 (br s,

1H), 12.25 (br d, 1H).

Example 180.03

embedded image

cyclopropyl{4-[(2-{[6-(pyrimidin-2-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 4): R_t= 0.96 min; MS (ESIpos): m/z = 455 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4H) 1.93-2.00

(m, 1H) 2.34-2.47 (m, 3H) 3.44-3.59 (m, 4H) 3.71 (br s, 2H) 6.95 (d,

1H) 7.19 (s, 1H) 7.33 (t, 1H) 7.38-7.62 (m, 1H) 8.19 (br d, 1H) 8.28 (d,

1H) 8.36-8.66 (m, 1H) 8.84 (d, 2H) 10.75 (br s, 1H) 12.28 (br s, 1H)

Example 181.03

embedded image

cyclopropyl(4-{[2-({6-[4-(dimethylamino)pyrimidin-2-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.06 min; MS (ESIpos): m/z = 498.3 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4H) 1.92-2.03

(m, 1H) 2.34-2.46 (m, 4H) 3.16 (br s, 5H) 3.53 (s, 4H) 3.71 (br s, 2H)

6.52 (d, 1H) 6.93 (d, 1H) 7.11-7.49 (m, 2H) 8.13 (br d, 1H) 8.20-8.30

(m, 2H) 8.48 (br s, 1H) 10.73 (s, 1H) 12.26 (s, 1H)

Example 182.03

embedded image

cyclopropyl{4-[(2-{[6-(5,7-dihydrofuro[3,4-d]pyrimidin-4-yl)-1H-

benzimidazol-2-yl]amino}pyridin-4-yl)methyl]piperazin-1-

yl}methanone

LC-MS (Method 4): R_t= 0.93 min; MS (ESIpos): m/z = 497 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.66-0.75 (m, 4H), 1.91-2.02

(m, 1H), 2.36 (br s, 2H), 2.43 (br s, 2H), 3.50 (br s, 2H), 3.53 (s, 2H),

3.71 (br s, 2H), 5.01 (s, 2H), 5.49 (s, 2H), 6.96 (d, 1H), 7.29 (br s, 1H),

7.51 (br d, 1H), 7.72 (br d, 1H), 8.04 (br s, 1H), 8.25-8.31 (m, 1H),

9.09 (s, 1H), 10.79 (br s, 1H), 12.13-12.58 (m, 1H).

Example 183.03

embedded image

cyclopropyl(4-{[2-({6-[5-methyl-6-(trifluoromethyl)pyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.16 min; MS (ESIpos): m/z = 537 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.63-0.77 (m, 4H), 1.91-2.03

(m, 1H), 2.30-2.40 (m, 2H), 2.41-2.47 (m, 2H), 2.51-2.54 (m, 2H),

3.50 (br s, 3H), 3.53 (s, 2H), 3.71 (br s, 2H), 6.96 (d, 1H), 7.21 (s, 1H),

7.26-7.64 (m, 2H), 7.64-7.92 (m, 1H), 8.28 (d, 1H), 9.24 (s, 1H),

10.78 (br d, 1H), 12.31 (s, 1H).

Example 184.03

embedded image

cyclopropyl{4-[(2-{[6-(5-methylpyrimidin-4-yl)-1H-benzimidazol-2-

yl]amino}pyridin-4-yl)methyl]piperazin-1-yl}methanone

LC-MS (Method 4): R_t= 0.94 min; MS (ESIpos): m/z = 469 [M + H]⁺

¹H-NMR (400 MHz, DMSO-d₆): δ [ppm] = 0.60-0.78 (m, 4H), 1.90-2.02

(m, 1H), 2.31-2.47 (m, 7H), 3.43-3.59 (m, 4H), 3.71 (br s, 2H), 6.95

(d, 1H), 7.21 (s, 1H), 7.33-7.98 (m, 3H), 8.28 (d, 1H), 8.68 (s, 1H),

9.04 (s, 1H), 10.75 (br s, 1H), 12.28 (br s, 1H).

Example 191.03

embedded image

[4-({2-[(6-{6-[(cyclobutylmethyl)amino]-5-fluoropyrimidin-4-yl}-1H-

benzimidazol-2-yl)amino]pyridin-4-yl}methyl)piperazin-1-

yl]cyclopropyl)methanone

LC-MS (Method 2): R_t= 1.22 min; MS (ESIpos): m/z = 556 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.75 (m, 4H) 1.69-1.89

(m, 4H) 1.91-2.05 (m, 3H) 2.34-2.47 (m, 4H) 2.58-2.65 (m, 1H) 3.42-

3.49 (m, 2H) 3.49-3.56 (m, 4H) 3.71 (br s, 2H) 6.95 (d, 1H) 7.19 (s,

1H) 7.37-7.62 (m, 1H) 7.63-7.81 (m, 2H) 7.91-8.23 (m, 1H) 8.24-

8.33 (m, 2H) 10.69-10.78 (m, 1H) 12.23-12.31 (m, 1H)

Example 192.03

embedded image

cyclopropyl(4-{[2-({6-[6-(cyclopropylamino)-5-fluoropyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]mnethyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.01 min; MS (ESIpos): m/z = 528 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.59-0.77 (m, 8H) 1.92-2.00

(m, 1H) 2.34-2.48 (m, 4H) 2.83-2.94 (m, 1H) 3.50 (br s, 2H) 3.52 (s,

2H) 3.70 (br s, 2H) 6.95 (d, 1H) 7.19 (s, 1H) 7.38-7.62 (m, 1H) 7.66-

7.81 (m, 2H) 7.91-8.22 (m, 1H) 8.27 (d, 1H) 8.36 (d, 1H) 10.74 (br s,

1H) 12.23-12.33 (m, 1H)

Example 193.03

embedded image

cyclopropyl(4-{[2-({6-[5-fluoro-6-(propan-2-ylamino)pyrimidin-4-yl]-

1H-benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 4): R_t= 1.1 min; MS (ESIpos): m/z = 530 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.76 (m, 4H) 1.23 (d, 6H)

1.96 (tt, 1H) 2.33-2.47 (m, 4H) 3.52 (s, 4H) 3.70 (br s, 2H) 4.25-4.37

(m, 1H) 6.95 (dd, 1H) 7.19 (s, 1H) 7.36-7.42 (m, 1H) 7.42-7.62 (m,

1H) 7.63-7.81 (m, 1H) 7.89-8.23 (m, 1H) 8.28 (d, 1H) 8.30 (d, 1H)

10.74 (br s, 1H) 12.24-12.32 (m, 1H)

Example 194.03

embedded image

(4-{[2-({6-[6-(cyclobutylamino)-5-fluoropyrimidin-4-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)(cyclopropyl)methanone

LC-MS (Method 4): R_t= 1.13 min; MS (ESIpos): m/z = 542 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.76 (m, 4H) 1.61-1.75

(m, 2H) 1.96 (tt, 1H) 2.06-2.18 (m, 2H) 2.22-2.32 (m, 2H) 2.33-2.47

(m, 4H) 3.43-3.60 (m, 4H) 3.70 (br s, 2H) 4.56 (sxt, 1H) 6.95 (dd, 1H)

7.22 (br s, 1H) 7.49 (br s, 1H) 7.73 (br d, 1H) 7.83 (br d, 1H) 7.96-8.21

(m, 1H) 8.23-8.36 (m, 2H) 10.75 (br s, 1H) 12.28 (br s, 1H)

Example 195.03

embedded image

cyclopropyl[4-({2-[(6-{6-[(cyclopropylmethyl)amino]-5-

fluoropyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-

yl}methyl)piperazin-1-yl]methanone

LC-MS (Method 4): R_t= 1.12 min; MS (ESIpos): m/z = 542 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.25-0.31 (m, 2H) 0.39-0.48

(m, 2H) 0.66-0.75 (m, 4H) 1.09-1.19 (m, 1H) 1.93-2.00 (m, 1H) 2.33-

2.47 (m, 4H) 3.30 (t, 2H) 3.46-3.54 (m, 4H) 3.70 (br s, 2H) 6.95 (dd,

1H) 7.20 (s, 1H) 7.45 (br s, 1H) 7.70-7.80 (m, 2H) 7.88-8.23 (m, 1H)

8.24-8.31 (m, 2H) 10.74 (br s, 1H) 12.28 (br s, 1H)

Example 196.03

embedded image

cyclopropyl(4-{[2-({6-[3-(dimethylamino)pyrazin-2-yl]-1H-

benzimidazol-2-yl}amino)pyridin-4-yl]methyl}piperazin-1-

yl)methanone

LC-MS (Method 2): R_t= 1.06 min; MS (ESIpos): m/z = 498 [M + H]⁺

¹H NMR (400 MHz, DMSO-d₆) δ ppm 0.66-0.77 (m, 4H) 1.91-2.00

(m, 1H) 2.34-2.47 (m, 4H) 2.73 (s, 6H) 3.52 (s, 4H) 3.71 (br s, 2H)

6.94 (d, 1H) 7.19 (s, 1H) 7.30-7.60 (m, 2H) 7.64-7.94 (m, 1H) 8.05

(d, 2H) 8.27 (d, 1H) 10.68 (br s, 1H) 12.19 (br s, 1H)

Example 197.04
{4-[(1R or 1S)-1-{2-[(6-{6-[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-1H-benzimidazol-2-yl)amino]pyridin-4-yl}ethyl]piperazin-1-yl}[1-(trifluoromethyl)cyclopropyl]methanone

embedded image

A mixture of 6-{6-[(cyclopropylmethyl)(methyl)amino]pyrimidin-4-yl}-N-{4-[(1R or 1S)-1-(piperazin-1-yl)ethyl]pyridin-2-yl}-1H-benzimidazol-2-amine hydrochloride (115 mg), 1-(trifluoromethyl)cyclopropanecarboxylic acid (89.6 mg), solid NaHCO₃(97.7 mg) and HATU (221 mg) was stirred in DMF (1.2 ml) overnight at rt. The crude mixture was purified without work up by preparative HPLC to give 35.3 mg (95% purity) of the title compound.

LC-MS (Method 2): R_t=1.29 min; MS (ESIpos): m/z=620 [M+H]⁺.

¹H-NMR (400 MHz, DMSO-d6): δ [ppm]=0.26-0.54 (m, 4H), 1.01-1.20 (m, 3H), 1.22-1.35 (m, 5H), 2.29-2.47 (m, 4H), 3.17 (s, 3H), 3.42-3.50 (m, 1H), 3.51-3.66 (m, 6H), 6.96 (d, 1H), 7.08 (br s, 1H), 7.18 (s, 1H), 7.38-7.52 (m, 1H), 7.88 (dd, 1H), 8.14-8.34 (m, 2H), 8.52 (d, 1H), 10.72 (br s, 1H), 12.26 (br s, 1H).

Experimental Section—Biological Assays & Biological Data Part
Abbreviations

The following table 24 lists the abbreviations used herein, in particular in the Biological Assays & Biological Data part of the Experimental Section:

TABLE 24

μg
microgram

μl
microliter

μM
micromolar

ALS
familial amyotrophic lateral sclerosis

ATP
Adenosine triphosphate

CCL5
chemokine (C-C motif) ligand 5

CDK9
cyclin-dependent kinase 9

CMV
Cytomegalovirus

CycT1
cyclin T1

DMEM
Dulbecco's Modified Eagle Medium

DMSO
dimethylsulphoxide

EDTA
ethylenediamine tetraacetic acid

ERalpha
estrogen receptor alpha

FCS
fetal calf serum

h
hours

HEPES
4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid

HTRF
Homogeneous Time Resolved Fluorescence

HUVEC
Human Umbilical Vein Endothelial Cells

IC₅₀
half maximal inhibitory concentration

IFN
interferon

IFN-beta
interferon beta

IkBa
nuclear factor of kappa light polypeptide gene enhancer

in B-cells inhibitor, alpha

IKK
I kappa B kinase

IKKα
inhibitor of kappa light polypeptide gene enhancer in

B-cells, kinase alpha

IKKβ
inhibitor of kappa light polypeptide gene enhancer in

B-cells, kinase beta

IKKε
inhibitor of kappa light polypeptide gene enhancer in

B-cells, kinase epsilon

IL-6
interleukin 6 (interferon, beta 2)

IRF
interferon regulatory factor

Kras
v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog

Luc2
Firefly Luciferase 2

MgCl₂
Magnesiumchloride

μM
micromolar

mM
millimolar

NF-kB
nuclear factor of kappa light polypeptide gene enhancer

in B-cells

Ni-NTA
Nitrilotriacetic acid

nM
nanomolar

nm
nanometer

ON
over night

Pca
prostate cancer

polyIC
Polyinosinic: polycytidylic acid

Poly
Polyinosinic: polycytidylic acid, high molecular weight

(I: C)_HMW

pSer
phospho-serine

RalB
v-ral simian leukemia viral oncogene homolog B (ras

related; GTP binding protein)

RANTES
chemokine (C-C motif) ligand 5

TBK1
TANK-binding kinase 1

TR-FRET
Time-resolved-Fluorescence Resonance Energy Transfer

v/v
volume by volume

Examples were tested in selected biological assays one or more times. When tested more than once, data are reported as either average values or as median values, wherein

- the average value, also referred to as the arithmetic mean value, represents the sum of the values obtained divided by the number of times tested, and
- the median value represents the middle number of the group of values when ranked in ascending or descending order. If the number of values in the data set is odd, the median is the middle value. If the number of values in the data set is even, the median is the arithmetic mean of the two middle values.

Examples were synthesized one or more times. When synthesized more than once, data from biological assays represent average values or median values calculated utilizing data sets obtained from testing of one or more synthetic batch.

The in vitro activity of the compounds of the present invention can be demonstrated in the following assays:

In Vitro Assay 1: TBK1 Low ATP Kinase Assay

TBK1-inhibitory activity of compounds of the present invention at a low ATP concentration after pre-incubation of enzyme and test compounds was quantified employing the TR-FRET-based TBK1 assay as described in the following paragraphs.

Recombinant full-length N-terminally His-tagged human TBK1, expressed in insect cells and purified by Ni-NTA affinity chromatography, was purchased from Life Technologies (Cat. No PR5618B) and used as enzyme. As substrate for the kinase reaction biotinylated peptide biotin-Ahx-GDEDFSSFAEPG (C-terminus in amide form) was used which can be purchased e.g. from the company Biosyntan (Berlin-Buch, Germany).

For the assay 50 nl of a 100-fold concentrated solution of the test compound in DMSO was pipetted into either a black low volume 384well microtiter plate or a black 1536well microtiter plate (Greiner Bio-One, Frickenhausen, Germany), 2 μl of a solution of TBK1 in aqueous assay buffer [50 mM HEPES pH 7.0, 10 mM MgCl₂, 1.0 mM dithiothreitol, 0.05% (w/v) bovine serum albumine, 0.01% (v/v) Nonidet-P40 (Sigma), protease inhibitor mixture (“Complete w/o EDTA” from Roche, 1 tablet per 5 ml)] were added and the mixture was incubated for 15 min at 22° C. to allow pre-binding of the test compounds to the enzyme before the start of the kinase reaction. Then the kinase reaction was started by the addition of 3 μl of a solution of adenosine-tri-phosphate (ATP, 16.7 μM=>final conc. in the 5 μl assay volume is 10 μM) and substrate (1.67 μM=>final conc. in the 5 μl assay volume is 1 μM) in assay buffer and the resulting mixture was incubated for a reaction time of 30 min at 22° C. The concentration of TBK1 was adjusted depending of the activity of the enzyme lot and was chosen appropriate to have the assay in the linear range, a typical concentration is 0.03 μg/ml. The reaction was stopped by the addition of 3 μl of a solution of TR-FRET detection reagents (0.33 μM streptavidine-XL665 [Cisbio Bioassays, Codolet, France], 2.5 nM anti-phosho-Serine anti-body [Merck Millipore, “STK antibody”, cat. #35-C₂] and 1.25 nM LANCE EU-W1024 labeled anti-mouse IgG anti-body [Perkin-Elmer, product no. AD0077]) in an aqueous EDTA-solution (167 mM EDTA, 0.13% (w/v) bovine serum albumin in 100 mM HEPES/NaOH pH 7.5).

The resulting mixture was incubated 1 h at 22° C. to allow the formation of complex between the phosphorylated biotinylated peptide and the detection reagents. Subsequently the amount of phosphorylated substrate was evaluated by measurement of the resonance energy transfer from the Eu-chelate to the streptavidine-XL. Therefore, the fluorescence emissions at 620 nm and 665 nm after excitation at 350 nm was measured in a TR-FRET reader, e.g. a Pherastar (BMG Labtechnologies, Offenburg, Germany) or a Viewlux (Perkin-Elmer). The ratio of the emissions at 665 nm and at 622 nm was taken as the measure for the amount of phosphorylated substrate. The data were normalised (enzyme reaction without inhibitor=0% inhibition, all other assay components but no enzyme=100% inhibition). Usually the test compounds were tested on the same microtiterplate in 11 different concentrations in the range of 20 μM to 0.07 nM (20 μM, 5.7 μM, 1.6 μM, 0.47 μM, 0.13 μM, 38 nM, 11 nM, 3.1 nM, 0.9 nM, 0.25 nM and 0.07 nM, the dilution series prepared separately before the assay on the level of the 100 fold concentrated solutions in DMSO by serial dilutions, exact concentrations may vary depending pipettors used)) in duplicate values for each concentration and IC₅₀values were calculated using Genedata Screener™ software.

In Vitro Assay 2: TBK1 High ATP Kinase Assay

TBK1-inhibitory activity of compounds of the present invention at a high ATP concentration after pre-incubation of enzyme and test compounds was quantified employing the TR-FRET-based TBK1 assay as described in the following paragraphs.

For the assay 50 nl of a 100-fold concentrated solution of the test compound in DMSO was pipetted into either a black low volume 384well microtiter plate or a black 1536well microtiter plate (both Greiner Bio-One, Frickenhausen, Germany), 2 μl of a solution of TBK1 in aqueous assay buffer [50 mM HEPES pH 7.0, 10 mM MgCl₂, 1.0 mM dithiothreitol, 0.05% (w/v) bovine serum albumine, 0.01% (v/v) Nonidet-P40 (Sigma), protease inhibitor mixture (“Complete w/o EDTA” from Roche, 1 tablet per 5 ml)] were added and the mixture was incubated for 15 min at 22° C. to allow pre-binding of the test compounds to the enzyme before the start of the kinase reaction. Then the kinase reaction was started by the addition of 3 μl of a solution of adenosine-tri-phosphate (ATP, 1.67 mM=>final conc. in the 5 μl assay volume is 1 mM) and substrate (1.67 μM=>final conc. in the 5 μl assay volume is 1 μM) in assay buffer and the resulting mixture was incubated for a reaction time of 30 min at 22° C. The concentration of TBK1 was adjusted depending of the activity of the enzyme lot and was chosen appropriate to have the assay in the linear range, typical concentrations were in the range of 0.002-0.004 μg/ml. The reaction was stopped by the addition of 3 μl of a solution of TR-FRET detection reagents (0.33 μM streptavidine-XL665 [Cisbio Bioassays, Codolet, France], 2.5 nM anti-phosho-Serine anti-body [Merck Millipore, “STK antibody”, cat. #35-C₂] and 1.25 nM LANCE EU-W1024 labeled anti-mouse IgG anti-body [Perkin-Elmer, product no. AD0077]) in an aqueous EDTA-solution (100 mM EDTA, 0.13% (w/v) bovine serum albumin in 100 mM HEPES/NaOH pH 7.5).

The resulting mixture was incubated 1 h at 22° C. to allow the formation of complex between the phosphorylated biotinylated peptide and the detection reagents. Subsequently the amount of phosphorylated substrate was evaluated by measurement of the resonance energy transfer from the Eu-chelate to the streptavidine-XL. Therefore, the fluorescence emissions at 620 nm and 665 nm after excitation at 350 nm was measured in a TR-FRET reader, e.g. a Pherastar (BMG Labtechnologies, Offenburg, Germany) or a Viewlux (Perkin-Elmer). The ratio of the emissions at 665 nm and at 622 nm was taken as the measure for the amount of phosphorylated substrate. The data were normalized (enzyme reaction without inhibitor=0% inhibition, all other assay components but no enzyme=100% inhibition). Usually the test compounds were tested on the same microtiterplate in 11 different concentrations in the range of 20 μM to 0.07 nM (20 μM, 5.7 μM, 1.6 μM, 0.47 μM, 0.13 μM, 38 nM, 11 nM, 3.1 nM, 0.9 nM, 0.25 nM and 0.07 nM, the dilution series prepared separately before the assay on the level of the 100 fold concentrated solutions in DMSO by serial dilutions, exact concentrations may vary depending pipettors used) in duplicate values for each concentration and IC₅₀values were calculated using Genedata Screener™ software.

In Vitro Assay 3: CDK9/CycT1 High ATP Kinase Assay

CDK9/CycT1-inhibitory activity of compounds of the present invention at a high ATP concentration after preincubation of enzyme and test compounds was quantified employing the CDK9/CycT1 TR-FRET assay as described in the following paragraphs.

Recombinant full-length His-tagged human CDK9 and CycT1, expressed in insect cells and purified by Ni-NTA affinity chromatography, were purchased from Life Technologies (Cat. No PV4131). As substrate for the kinase reaction biotinylated peptide biotin-Ttds-YISPLKSPYKISEG (C-terminus in amide form) was used which can be purchased e.g. form the company JERINI peptide technologies (Berlin, Germany).

For the assay 50 nl of a 100 fold concentrated solution of the test compound in DMSO was pipetted into either a black low volume 384well microtiter plate or a black 1536well microtiter plate (both Greiner Bio-One, Frickenhausen, Germany), 2 μl of a solution of CDK9/CycT1 in aqueous assay buffer [50 mM Tris/HCl pH 8.0, 10 mM MgCl₂, 1.0 mM dithiothreitol, 0.1 mM sodium ortho-vanadate, 0.01% (v/v) Nonidet-P40 (Sigma)] were added and the mixture was incubated for 15 min at 22° C. to allow pre-binding of the test compounds to the enzyme before the start of the kinase reaction. Then the kinase reaction was started by the addition of 3 μl of a solution of adenosine-tri-phosphate (ATP, 3.3 mM=>final conc. in the 5 μl assay volume is 2 mM) and substrate (1.67 μM=>final conc. in the 5 μl assay volume is 1 μM) in assay buffer and the resulting mixture was incubated for a reaction time of 25 min at 22° C. The concentration of CDK9/CycT1 was adjusted depending of the activity of the enzyme lot and was chosen appropriate to have the assay in the linear range, typical concentrations were in the range of 0.5 μg/ml. The reaction was stopped by the addition of 3 μl of a solution of TR-FRET detection reagents (0.33 μM streptavidine-XL665 [Cisbio Bioassays, Codolet, France] and 1.67 nM anti-RB(pSer807/pSer811)-anti-body from BD Pharmingen [#558389] and 2 nM LANCE EU-W1024 labeled anti-mouse IgG anti-body [Perkin-Elmer, product no. AD0077]) in an aqueous EDTA-solution (167 mM EDTA, 0.2% (w/v) bovine serum albumin in 100 mM HEPES pH 7.5).

The resulting mixture was incubated 1 h at 22° C. to allow the formation of complex between the phosphorylated biotinylated peptide and the detection reagents. Subsequently the amount of phosphorylated substrate was evaluated by measurement of the resonance energy transfer from the Eu-chelate to the streptavidine-XL. Therefore, the fluorescence emissions at 620 nm and 665 nm after excitation at 350 nm was measured in a TR-FRET reader, e.g. a Pherastar (BMG Labtechnologies, Offenburg, Germany) or a Viewlux (Perkin-Elmer). The ratio of the emissions at 665 nm and at 622 nm was taken as the measure for the amount of phosphorylated substrate. The data were normalised (enzyme reaction without inhibitor=0% inhibition, all other assay components but no enzyme=100% inhibition). Usually the test compounds were tested on the same microtiterplate in 11 different concentrations in the range of 20 μM to 0.07 nM (20 μM, 5.7 μM, 1.6 μM, 0.47 μM, 0.13 μM, 38 nM, 11 nM, 3.1 nM, 0.9 nM, 0.25 nM and 0.07 nM, the dilution series prepared separately before the assay on the level of the 100 fold concentrated solutions in DMSO by serial dilutions, exact concentrations may vary depending pipettors used) in duplicate values for each concentration and IC₅₀values were calculated using Genedata Screener™ software.

In Vitro Assay 4: IKKε Low ATP Kinase Assay

IKKε-inhibitory activity of compounds of the present invention at a low ATP concentration after preincubation of enzyme and test compounds was quantified employing the TR-FRET-based IKKε assay as described in the following paragraphs.

A recombinant fusion protein of GST (N-terminally) and full-length human IKKε, expressed in insect cells and purified by glutathione affinity chromatography, was purchased from Life Technologies (Cat. No PV4876) and used as enzyme. As substrate for the kinase reaction biotinylated peptide biotin-Ahx-GDEDFSSFAEPG (C-terminus in amide form) was used which can be purchased e.g. from the company Biosyntan (Berlin-Buch, Germany).

For the assay 50 nl of a 100 fold concentrated solution of the test compound in DMSO was pipetted into either a black low volume 384well microtiter plate or a black 1536well microtiter plate (both Greiner Bio-One, Frickenhausen, Germany), 2 μl of a solution of IKKε in aqueous assay buffer [50 mM HEPES pH 7.0, 10 mM MgCl₂, 1.0 mM dithiothreitol, 0.05% (w/v) bovine serum albumin, 0.01% (v/v) Nonidet-P40 (Sigma), protease inhibitor mixture (“Complete w/o EDTA” from Roche, 1 tablet per 5 ml)] were added and the mixture was incubated for 15 min at 22° C. to allow pre-binding of the test compounds to the enzyme before the start of the kinase reaction. Then the kinase reaction was started by the addition of 3 μl of a solution of adenosine-tri-phosphate (ATP, 16.7 μM=>final conc. in the 5 μl assay volume is 10 μM) and substrate (1.67 μM=>final conc. in the 5 μl assay volume is 1 μM) in assay buffer and the resulting mixture was incubated for a reaction time of 30 min at 22° C. The concentration of IKKε was adjusted depending of the activity of the enzyme lot and was chosen appropriate to have the assay in the linear range, a typical concentration is 0.01 μg/ml. The reaction was stopped by the addition of 3 μl of a solution of TR-FRET detection reagents (0.33 μM streptavidine-XL665 [Cisbio Bioassays, Codolet, France], 2.5 nM anti-phosho-Serine antibody [Merck Millipore, “STK antibody”, cat. #35-C₂] and 1.25 nM LANCE EU-W1024 labeled anti-mouse IgG antibody [Perkin-Elmer, product no. AD0077]) in an aqueous EDTA-solution (167 mM EDTA, 0.13% (w/v) bovine serum albumin in 100 mM HEPES/NaOH pH 7.5).

The resulting mixture was incubated 1 h at 22° C. to allow the formation of complex between the phosphorylated biotinylated peptide and the detection reagents. Subsequently the amount of phosphorylated substrate was evaluated by measurement of the resonance energy transfer from the Eu-chelate to the streptavidine-XL. Therefore, the fluorescence emissions at 620 nm and 665 nm after excitation at 350 nm was measured in a TR-FRET reader, e.g. a Pherastar (BMG Labtechnologies, Offenburg, Germany) or a Viewlux (Perkin-Elmer). The ratio of the emissions at 665 nm and at 622 nm was taken as the measure for the amount of phosphorylated substrate. The data were normalised (enzyme reaction without inhibitor=0% inhibition, all other assay components but no enzyme=100% inhibition). Usually the test compounds were tested on the same microtiterplate in 11 different concentrations in the range of 20 μM to 0.07 nM (20 μM, 5.7 μM, 1.6 μM, 0.47 μM, 0.13 μM, 38 nM, 11 nM, 3.1 nM, 0.9 nM, 0.25 nM and 0.07 nM, the dilution series prepared separately before the assay on the level of the 100 fold concentrated solutions in DMSO by serial dilutions, exact concentrations may vary depending pipettors used) in duplicate values for each concentration and IC₅₀values were calculated using Genedata Screener™ software.

In Vitro Assay 5: Assay for the Detection of Ikke/TBK1 Inhibition in MDA-MB231 Cells

TBK1/IKKε kinases are involved in the regulation of the Toll-like receptor 3 dependent innate immune response pathway. Stimulation of TLR3 by poly-IC activates TBK1/IKKε which in turn phosphorylate the transcription factor IRF3. IRF3 translocates into the cell nucleus and activates the transcription of interferon regulated genes (e.g., IFN-beta, RANTES). The cellular assay for the determination of inhibition of IKKε and TBK1 was performed in MDA-MB231 cells (ATCC, Manassas, USA) that stably express an ISRE-Luciferase reporter responsive for IRF3. The promoter sequence was based on the pISRE-TA-Luc vector (available from Clontech) containing five copies of the ISRE enhancer element, located upstream of the minimal TA promoter. The coding sequence of optimized firefly luciferase luc2 (Promega) was placed downstream of the ISRE-TA element. The final reporter pISRE-TA-luc2 containing a Hygromycin resistance gene was integrated into a lentiviral expression system that was used to generate the stable reporter cells. The coding sequence of the ISRE promoter and luciferase gene is as follows:

ISRE-TA-luc2 sequence

(SEQ ID NO: 1)

1843
AATAGTAGACATAATAGCAACAGACATACAAACTAAAGAATTACAAAAACAAATTACAAA

1903
AATTCAAAATTTTATCGATACTAGTTCTTACGCGTGGTACCGAGCTCTTACGCGTGCTAG

1963
CGAAACTGAAACTGAAACTGAAACTGAAACTGAAACTGAAACTGAAACTGAAACTGAAAC

2023
TAGATCTGGGTATATAATGGAAGCTTGGCATTCCGGTACTGTTGGTAAAGCCACCATGGA

2083
AGATGCCAAAAACATTAAGAAGGGCCCAGCGCCATTCTACCCACTCGAAGACGGGACCGC

2143
CGGCGAGCAGCTGCACAAAGCCATGAAGCGCTACGCCCTGGTGCCCGGCACCATCGCCTT

2203
TACCGACGCACATATCGAGGTGGACATTACCTACGCCGAGTACTTCGAGATGAGCGTTCG

2263
GCTGGCAGAAGCTATGAAGCGCTATGGGCTGAATACAAACCATCGGATCGTGGTGTGCAG

2323
CGAGAATAGCTTGCAGTTCTTCATGCCCGTGTTGGGTGCCCTGTTCATCGGTGTGGCTGT

2383
GGCCCCAGCTAACGACATCTACAACGAGCGCGAGCTGCTGAACAGCATGGGCATCAGCCA

2443
GCCCACCGTCGTATTCGTGAGCAAGAAAGGGCTGCAAAAGATCCTCAACGTGCAAAAGAA

2503
GCTACCGATCATACAAAAGATCATCATCATGGATAGCAAGACCGACTACCAGGGCTTCCA

2563
AAGCATGTACACCTTCGTGACTTCCCATTTGCCACCCGGCTTCAACGAGTACGACTTCGT

2623
GCCCGAGAGCTTCGACCGGGACAAAACCATCGCCCTGATCATGAACAGTAGTGGCAGTAC

2683
CGGATTGCCCAAGGGCGTAGCCCTACCGCACCGCACCGCTTGTGTCCGATTCAGTCATGC

2743
CCGCGACCCCATCTTCGGCAACCAGATCATCCCCGACACCGCTATCCTCAGCGTGGTGCC

2803
ATTTCACCACGGCTTCGGCATGTTCACCACGCTGGGCTACTTGATCTGCGGCTTTCGGGT

2863
CGTGCTCATGTACCGCTTCGAGGAGGAGCTATTCTTGCGCAGCTTGCAAGACTATAAGAT

2923
TCAATCTGCCCTGCTGGTGCCCACACTATTTAGCTTCTTCGCTAAGAGCACTCTCATCGA

2983
CAAGTACGACCTAAGCAACTTGCACGAGATCGCCAGCGGCGGGGCGCCGCTCAGCAAGGA

3043
GGTAGGTGAGGCCGTGGCCAAACGCTTCCACCTACCAGGCATCCGCCAGGGCTACGGCCT

3103
GACAGAAACAACCAGCGCCATTCTGATCACCCCCGAAGGGGACGACAAGCCTGGCGCAGT

3163
AGGCAAGGTGGTGCCCTTCTTCGAGGCTAAGGTGGTGGACTTGGACACCGGTAAGACACT

3223
GGGTGTGAACCAGCGCGGCGAGCTGTGCGTCCGTGGCCCCATGATCATGAGCGGCTACGT

3283
TAACAACCCCGAGGCTACAAACGCTCTCATCGACAAGGACGGCTGGCTGCACAGCGGCGA

3343
CATCGCCTACTGGGACGAGGACGAGCACTTCTTCATCGTGGACCGGCTGAAGAGCCTGAT

3403
CAAATACAAGGGCTACCAGGTAGCCCCAGCCGAACTGGAGAGCATCCTGCTGCAACACCC

3463
CAACATCTTCGACGCCGGGGTCGCCGGCCTGCCCGACGACGATGCCGGCGAGCTGCCCGC

3523
CGCAGTCGTCGTGCTGGAACACGGTAAAACCATGACCGAGAAGGAGATCGTGGACTATGT

3583
GGCCAGCCAGGTTACAACCGCCAAGAAGCTGCGCGGTGGTGTTGTGTTCGTGGACGAGGT

3643
GCCTAAAGGACTGACCGGCAAGTTGGACGCCCGCAAGATCCGCGAGATTCTCATTAAGGC

3703
CAAGAAGGGCGGCAAGATCGCCGTGTAATAATTCTAGAACGAAGCGGCCGCAGGGTTTAA

ISRE-TA 1945-2040

Luc2 2078-3730 (1652 bp)

The ISRE-luc2-MDA-MB231 cells were cultured in DMEM/Ham's F12 (Gibco #21041) supplemented with 10% fetal calf serum (typically but not exclusively used: FCS Gold Gibco-No. 10500-064), 2 mM L-glutamine (Gibco-No. 35050-038), 150 μg/ml Hygromycin B, cryopreserved in 90% FCS+10% dimethylsulphoxide (DMSO) and stored as frozen aliquots of typically 5-10 million cells/vial at −150° C. or below until further use.

For the assay, sufficient cells were rapidly thawed in a 37° C. water bath and pipetted into pre-warmed assay medium (DMEM/Ham's F12, 10% FCS, 2 mM L-glutamine, 1% Penicillin/Streptomycin (Biochrom AG; #A2213)). The cells were centrifuged for 5 min at 180×g. The supernatant was removed and the cell pellet was resuspended in fresh medium to give a suspension of 2.4 million cells/ml. Poly (I:C) HMW (InvivoGen, #tlrl-pic) was diluted in assay medium to 0.2 mg/L and subsequently mixed with the cell suspension in 1:1 ratio.

Fifty nl of a 100-fold concentrated solution of the test compound in DMSO were transferred into a white microtiter test plate (384 or 1536, Greiner Bio-One, Frickenhausen, Germany). For this, either a Hummingbird liquid handler (Digilab, MA, USA) or an Echo acoustic system (Labcyte, CA, USA) was used. Five μl of a freshly prepared cell suspension was added to the wells of a test plate and incubated at 37° C. in a 5% CO₂atmosphere. The inhibitor control cell suspension was added to empty wells at the side of the test plate. After completion of the incubation for 20-24 hours, 2.5 μl of Steady-Glo® Luciferase detection solution (Promega), prepared as recommended by the supplier, were added to all wells. The test plate was incubated at 20° C. for 30 min before measurement of the luminescence in a microplate reader (typically Pherastar by BMG, Germany, or ViewLux by Perkin-Elmer, USA). Data were normalized (cells without inhibitor=0% inhibition, cells with reference inhibitor=100% inhibition). Compounds were tested in duplicates at up to 11 concentrations (for example 20 μM, 5.7 μM, 1.6 μM, 0.47 μM, 0.13 μM, 38 nM, 11 nM, 3.1 nM, 0.89 nM, 0.25 nM and 0.073 nM). Dilution series were made prior to the assay in a 100 fold concentrated form by serial dilution. IC₅₀values were calculated by 4-Parameter fitting using a commercial software package (Genedata Screener, Switzerland).

To prepare the inhibitor control cell suspension, a part of prepared the cell suspension mixture was supplemented with 10 μM of a reference inhibitor, for the generation of above mentioned 100% inhibition reference for data normalization.

In Vitro Assay 6: Counterassay for the Detection of Off-Target Inhibition in MDA-MB231 Cells

The cellular assay for the determination of off-target inhibition for IKKε and TBK1 was performed in MDA-MB231 (ATCC, Manassas, USA) cells that stably express a constitutively active CMV-Luciferase reporter. Selective IKKε/TBK1 inhibitors are inactive, whereas inhibition of the firefly luciferase assay indicates off-target inhibition, e.g. transcriptional or translational inhibition, toxicity or inhibition of the luciferase activity. The coding sequence of the CMV promoter and luciferase gene is as follows:

(SEQ ID NO: 2)

1
CTCGAGATCCGGCCATTAGCCATATTATTCATTGGTTATATAGCATAAATCAATATTGGC

61
TATTGGCCATTGCATACGTTGTATCCATATCATAATATGTACATTTATATTGGCTCATGT

121
CCAACATTACCGCCATGTTGACATTGATTATTGACTAGTTATTAATAGTAATCAATTACG

181
GGGTCATTAGTTCATAGCCCATATATGGAGTTCCGCGTTACATAACTTACGGTAAATGGC

241
CCGCCTGGCTGACCGCCCAACGACCCCCGCCCATTGACGTCAATAATGACGTATGTTCCC

301
ATAGTAACGCCAATAGGGACTTTCCATTGACGTCAATGGGTGGAGTATTTACGGTAAACT

361
GCCCACTTGGCAGTACATCAAGTGTATCATATGCCAAGTACGCCCCCTATTGACGTCAAT

421
GACGGTAAATGGCCCGCCTGGCATTATGCCCAGTACATGACCTTATGGGACTTTCCTACT

481
TGGCAGTACATCTACGTATTAGTCATCGCTATTACCATGGTGATGCGGTTTTGGCAGTAC

541
ATCAATGGGCGTGGATAGCGGTTTGACTCACGGGGATTTCCAAGTCTCCACCCCATTGAC

601
GTCAATGGGAGTTTGTTTTGGCACCAAAATCAACGGGACTTTCCAAAATGTCGTAACAAC

661
TCCGCCCCATTGACGCAAATGGGCGGTAGGCATGTACGGTGGGAGGTCTATATAAGCAGA

721
GCTCGTTTAGTGAACCGTCAGATCGCCTGGAGACGCCATCCACGCTGTTTTGACCTCCAT

781
AGAAGACACCGGGACCGATCCAGCCTCCGCGGCCCCAAGCTTGGCAATCCGGTACTGTTG

841
GTAAAGCCACCATGGAAGATGCCAAAAACATTAAGAAGGGCCCAGCGCCATTCTACCCAC

901
TCGAAGACGGGACCGCCGGCGAGCAGCTGCACAAAGCCATGAAGCGCTACGCCCTGGTGC

961
CCGGCACCATCGCCTTTACCGACGCACATATCGAGGTGGACATTACCTACGCCGAGTACT

1021
TCGAGATGAGCGTTCGGCTGGCAGAAGCTATGAAGCGCTATGGGCTGAATACAAACCATC

1081
GGATCGTGGTGTGCAGCGAGAATAGCTTGCAGTTCTTCATGCCCGTGTTGGGTGCCCTGT

1141
TCATCGGTGTGGCTGTGGCCCCAGCTAACGACATCTACAACGAGCGCGAGCTGCTGAACA

1201
GCATGGGCATCAGCCAGCCCACCGTCGTATTCGTGAGCAAGAAAGGGCTGCAAAAGATCC

1261
TCAACGTGCAAAAGAAGCTACCGATCATACAAAAGATCATCATCATGGATAGCAAGACCG

1321
ACTACCAGGGCTTCCAAAGCATGTACACCTTCGTGACTTCCCATTTGCCACCCGGCTTCA

1381
ACGAGTACGACTTCGTGCCCGAGAGCTTCGACCGGGACAAAACCATCGCCCTGATCATGA

1441
ACAGTAGTGGCAGTACCGGATTGCCCAAGGGCGTAGCCCTACCGCACCGCACCGCTTGTG

1501
TCCGATTCAGTCATGCCCGCGACCCCATCTTCGGCAACCAGATCATCCCCGACACCGCTA

1561
TCCTCAGCGTGGTGCCATTTCACCACGGCTTCGGCATGTTCACCACGCTGGGCTACTTGA

1621
TCTGCGGCTTTCGGGTCGTGCTCATGTACCGCTTCGAGGAGGAGCTATTCTTGCGCAGCT

1681
TGCAAGACTATAAGATTCAATCTGCCCTGCTGGTGCCCACACTATTTAGCTTCTTCGCTA

1741
AGAGCACTCTCATCGACAAGTACGACCTAAGCAACTTGCACGAGATCGCCAGCGGCGGGG

1801
CGCCGCTCAGCAAGGAGGTAGGTGAGGCCGTGGCCAAACGCTTCCACCTACCAGGCATCC

1861
GCCAGGGCTACGGCCTGACAGAAACAACCAGCGCCATTCTGATCACCCCCGAAGGGGACG

1921
ACAAGCCTGGCGCAGTAGGCAAGGTGGTGCCCTTCTTCGAGGCTAAGGTGGTGGACTTGG

1981
ACACCGGTAAGACACTGGGTGTGAACCAGCGCGGCGAGCTGTGCGTCCGTGGCCCCATGA

2041
TCATGAGCGGCTACGTTAACAACCCCGAGGCTACAAACGCTCTCATCGACAAGGACGGCT

2101
GGCTGCACAGCGGCGACATCGCCTACTGGGACGAGGACGAGCACTTCTTCATCGTGGACC

2161
GGCTGAAGAGCCTGATCAAATACAAGGGCTACCAGGTAGCCCCAGCCGAACTGGAGAGCA

2221
TCCTGCTGCAACACCCCAACATCTTCGACGCCGGGGTCGCCGGCCTGCCCGACGACGATG

2281
CCGGCGAGCTGCCCGCCGCAGTCGTCGTGCTGGAACACGGTAAAACCATGACCGAGAAGG

2341
AGATCGTGGACTATGTGGCCAGCCAGGTTACAACCGCCAAGAAGCTGCGCGGTGGTGTTG

2401
TGTTCGTGGACGAGGTGCCTAAAGGACTGACCGGCAAGTTGGACGCCCGCAAGATCCGCG

2461
AGATTCTCATTAAGGCCAAGAAGGGCGGCAAGATCGCCGTGTAATAATTCTAGAACGAAG

2521
CGGCCGCAGGGTTTAAACACGGTCGACGGTACCGCGGGCCCAACATCGATAAAATAAAAG

2581
ATTTTATTTAGTCTCCAGAAAAAGGGGGGAATGAAAGACCCCACCTGTAGGTTTGGCAAG

2641
CTAGCTTAAGTAACGCCATTTTGCAAGGCATGGAAAAATACATAACTGAGAATAGAGAAG

2701
TTCAGATCAAGGTCAGGAACAGATGGAACAGCTGAATATGGGCCAAACAGGATATCTGTG

CMV promoter 1-813

Luc2 852-2504 (1652 bp)

The CMV-luc2-MDA-MB231 cell were cultured in DMEM/Ham's F12 (Gibco #21041) supplemented with 10% fetal calf serum (typically but not exclusively used: FCS Gold Gibco-No. 10500-064), 150 μg/ml Hygromycin B, cryopreserved in 90% culture medium+10% dimethylsulfoxide (DMSO) and stored as frozen aliquots of typically 5-10 million cells/vial at −150° C. or below until further use.

For the assay, sufficient cells were rapidly thawed in a 37° C. water bath and pipetted into pre-warmed assay medium (DMEM/Ham's F12, 10% FCS, 2 mM L-glutamine, 1% Penicillin/Streptomycin (Biochrom AG; #A2213)). The cells were centrifuged for 5 min at 180×g. The supernatant was removed and the cell pellet was resuspended in fresh medium to give a suspension of 0.3 million cells/ml. Poly (I:C)_HMW (InvivoGen, #tlrl-pic) was diluted in assay medium to 0.2 mg/L and subsequently mixed with the cell suspension in 1:1 ratio.

To prepare the inhibitor control cell suspension, a part of prepared the cell suspension mixture was supplemented with 5 μM of Actinomycin D (Sigma A1410).

In Vitro Assay 7: pIRF3 Cell Based Mechanistic Assay

IKKε and TBK1 are highly homologous serine/threonine kinases which are in involved in innate anti-viral immunity and which phosphorylates Interferon regulatory factor 3. pIRF3 (Ser 386) is measured in an HTRF assay (CisBio, Codolet, France). This assay is designed for the quantitative determination of phosphoSer(385/386) of human IRF3 protein. pSer(385/386) IRF3 is measured in a sandwich assay format using 2 different specific antibodies, one labelled with Cryptate (donor) and the second with d2 (acceptor). The two conjugates bind to the phosphorylated IRF3 present in the sample, thereby generating FRET. The intensity of the signal obtained is proportional to the number of antigen-antibody complexes formed and therefore the fluorescence is proportional to the concentration of the pSer(385/386) IRF3.

Protocol: The cellular assay for the determination of inhibition of IKKε and TBK1 was performed in MDA-MB231 cells (ATCC, Manassas, USA) that stably overexpress human IRF3 (human interferon regulatory factor 3 (IRF3; NM_001571)) under the control of the CMV promoter. The coding sequence for human IRF3 (from cDNA clone pCMV6-XL4-IRF3, Origene, Rockville, Md.; USA) was cloned into a lentiviral expression system containing a Hygromycin resistance gene. Derived lentiviral particles were used to generate the stable reporter cells. The clone MDA MB 231 mIRF3 #12 was selected for the assays.

The coding sequence of the CMV promoter and IRF3 gene is as follows:

(SEQ ID NO: 3)

ACTAGTATTATGCCCAGTACATGACCTTATGGGACTTTCCTACTTGGCAG

TACATCTACGTATTAGTCATCGCTATTACCATGGTGATGCGGTTTTGGCA

GTACATCAATGGGCGTGGATAGCGGTTTGACTCACGGGGATTTCCAAGTC

TCCACCCCATTGACGTCAATGGGAGTTTGTTTTGGCACCAAAATCAACGG

GACTTTCCAAAATGTCGTAACAACTCCGCCCCATTGACGCAAATGGGCGG

TAGGCGTGTACGGTGGGAGGTCTATATAAGCAGAGCTCGTTTAGTGAACC

GTCAGATCGCCTGGAGACGCCATCCACGCTGTTTTGACCTCCATAGAAGA

TTCTAGAGCTAGCGCTCAACTTTGTATAGAAAAGTTGACTAGTCCAGTGT

GGTGGAATTCTGCAGATATCAACAAGTTTGTACAAAAAAGCAGGCTGCCA

CCATGGGAACCCCAAAGCCACGGATCCTGCCCTGGCTGGTGTCGCAGCTG

GACCTGGGGCAACTGGAGGGCGTGGCCTGGGTGAACAAGAGCCGCACGCG

CTTCCGCATCCCTTGGAAGCACGGCCTACGGCAGGATGCACAGCAGGAGG

ATTTCGGAATCTTCCAGGCCTGGGCCGAGGCCACTGGTGCATATGTTCCC

GGGAGGGATAAGCCAGACCTGCCAACCTGGAAGAGGAATTTCCGCTCTGC

CCTCAACCGCAAAGAAGGGTTGCGTTTAGCAGAGGACCGGAGCAAGGACC

CTCACGACCCACATAAAATCTACGAGTTTGTGAACTCAGGAGTTGGGGAC

TTTTCCCAGCCAGACACCTCTCCGGACACCAATGGTGGAGGCAGTACTTC

TGATACCCAGGAAGACATTCTGGATGAGTTACTGGGTAACATGGTGTTGG

CCCCACTCCCAGATCCGGGACCCCCAAGCCTGGCTGTAGCCCCTGAGCCC

TGCCCTCAGCCCCTGCGGAGCCCCAGCTTGGACAATCCCACTCCCTTCCC

AAACCTGGGGCCCTCTGAGAACCCACTGAAGCGGCTGTTGGTGCCGGGGG

AAGAGTGGGAGTTCGAGGTGACAGCCTTCTACCGGGGCCGCCAAGTCTTC

CAGCAGACCATCTCCTGCCCGGAGGGCCTGCGGCTGGTGGGGTCCGAAGT

GGGAGACAGGACGCTGCCTGGATGGCCAGTCACACTGCCAGACCCTGGCA

TGTCCCTGACAGACAGGGGAGTGATGAGCTACGTGAGGCATGTGCTGAGC

TGCCTGGGTGGGGGACTGGCTCTCTGGCGGGCCGGGCAGTGGCTCTGGGC

CCAGCGGCTGGGGCACTGCCACACATACTGGGCAGTGAGCGAGGAGCTGC

TCCCCAACAGCGGGCATGGGCCTGATGGCGAGGTCCCCAAGGACAAGGAA

GGAGGCGTGTTTGACCTGGGGCCCTTCATTGTAGATCTGATTACCTTCAC

GGAAGGAAGCGGACGCTCACCACGCTATGCCCTCTGGTTCTGTGTGGGGG

AGTCATGGCCCCAGGACCAGCCGTGGACCAAGAGGCTCGTGATGGTCAAG

GTTGTGCCCACGTGCCTCAGGGCCTTGGTAGAAATGGCCCGGGTAGGGGG

TGCCTCCTCCCTGGAGAATACTGTGGACCTGCACATTTCCAACAGCCACC

CACTCTCCCTCACCTCCGACCAGTACAAGGCCTACCTGCAGGACTTGGTG

GAGGGCATGGATTTCCAGGGCCCTGGGGAGAGCTGA

MDA MB 231 mIRF3 #12 cells were plated in 384well plates at 10.000 cells/well in 30 μl DMEM/Ham's F12+10% FCS per well. After ON incubation at 37° C./5% CO₂, the medium was exchanged for phenol red-free medium. Compounds were added by HP Dispenser with compounds diluted in DMSO, maximal compound concentration was 30 μM, then 1:3 dilution steps, i.e. 30 μM, 10 μM, 3.3, μM etc, were applied using a HP D300 digital dispenser (Tecan, Germany). Normalization was done with DMSO to a final concentration of 0.6% per well. The cells were incubated for 1 h in an incubator, then poly IC was added to stimulate the cells (100 μM poly IC were diluted in 1000 μl OptiMEM (Gibco); in parallel 300 μl Lipofectamine 2000 (Life Technologies) were diluted in 1000 μl OptiMEM. Both solutions were mixed and incubated for 20 min at room temperature, then 3 μl per well (=0.15 μg/30 μl (5 μg/ml) PolyIC/Lipofectamine2000) were added. The cells were incubated for another hour in an incubator, then the plate was assayed according to the manufacturer (Cisbio Bioassays, Codolet, France, item #6FRF3PEH, IRF3 phospho-S385/386 kit): the medium was removed, then 18 μl of supplemented Lysis buffer #2 (1.9 ml Lysis buffer #2 (4×), +58 μl Blocking Reagent, included in Kit (100×), +3.84 ml ultrapure water) were added. 16 μl of the lysate were transferred into a 384well small volume white plate (Greiner Bio-One, Germany), the antibodies (included in the kit) were added and the plate was sealed with foil and incubated for 3 h at room temperature. Finally the measurement was done in a Pherastar (BMG, Germany) with 2 wavelengths (665 nm und 620 nm). IC₅₀values were calculated by 4-Parameter fitting using a commercial software package (Genedata Screener, Switzerland).

In Vitro Assay 8: ACHN Antiproliferation Assay

Tissue cultured ACHN human kidney renal cell adenocarcinoma cells (ATCC, Manassas, USA) were plated at 300 cells/well in 50 μl Earle's MEM (Biochrom; #FG 0325, with stable glutamine and 10% FCS, typically but not exclusively used: FCS Gold Gibco-No. 10500-064) in 384well microtiter plates (Corning 3707 white/clear bottom, Corning, Germany). All plates were incubated ON in an incubator at 37° C., 5% CO₂. The next day one plate was measured for time zero determination (using CTG solution, see below). The rest of the plates were treated with test compounds by a HP D300 digital dispenser (Tecan, Germany) with a starting concentration of 30 μM and subsequent 1:3 dilution steps. The plates were incubated at 37° C. for 96 h. Thereafter the plates were measured by addition of 40 ul/well CTG solution (Promega Cell Titer Glo solution (catalog number G755B and G756B)), incubation for 30 min on a shaker (Heidolph Titramax 1000, Heidolph, Germany) in the dark and afterwards luminescence was measured in a VICTOR V (Perkin Elmer). IC₅₀values were calculated by 4-Parameter fitting using a commercial software package (Genedata Screener, Switzerland).

In Vitro Assay 9: Calu-1 Antiproliferation Assay

Tissue cultured Calu-1 human lung epidermoid carcinoma cells (CLS Cell Lines Services, Eppelheim, Germany) were plated at 870 cells/well in 50 μl McCoy's 5A (Biochrom; #F 1015 and 10% FCS, typically but not exclusively used: FCS Gold Gibco-No. 10500-064) in 384well microtiter plates (Corning 3707 white/clear bottom, Corning, Germany). All plates were incubated ON in an incubator at 37° C., 5% CO₂. The next day one plate was measured for time zero determination (using CTG solution, see below). The rest of the plates were treated with test compounds by a HP D300 digital dispenser (Tecan, Germany) with a starting concentration of 30 μM and subsequent 1:3 dilution steps. The plates were incubated at 37° C. for 96 h. Thereafter the plates were measured by addition of 40 ul/well CTG solution (Promega Cell Titer Glo solution (catalog number G755B and G756B)), incubation for 30 min on a shaker (Heidolph Titramax 1000, Heidolph, Germany) in the dark and afterwards luminescence was measured in a VICTOR V (Perkin Elmer). IC₅₀values were calculated by 4-Parameter fitting using a commercial software package (Genedata Screener, Switzerland).

TABLE 25

TBK1 low ATP kinase assay: IC₅₀values

of examples in in vitro assay 1

TBK1 low ATP kinase

Example
assay IC₅₀[M]

Example 01.01
1.50E−7

Example 01.02
4.20E−8

Example 01.03
5.35E−8

Example 01.04
5.55E−8

Example 01.05
7.09E−8

Example 02.01
1.31E−7

Example 02.02
3.07E−8

Example 02.03
3.68E−8

Example 02.04
4.34E−8

Example 02.05
4.98E−8

Example 03.01
1.98E−7

Example 03.02
2.32E−7

Example 03.03
2.79E−7

Example 03.04
2.88E−7

Example 04.01
2.85E−8

Example 04.02
1.64E−8

Example 04.03
1.93E−8

Example 04.04
2.24E−8

Example 04.05
2.53E−8

Example 04.06
3.02E−8

Example 05.01
5.22E−8

Example 06.01
4.31E−9

Example 06.02
7.12E−9

Example 06.03
8.26E−9

Example 07.01
2.24E−7

Example 07.02
2.77E−7

Example 07.03
3.84E−7

Example 07.04
4.44E−7

Example 08.01
6.24E−7

Example 09.01
2.51E−7

Example 09.02
2.97E−7

Example 09.03
3.24E−7

Example 09.04
3.52E−7

Example 10.01
2.26E−6

Example 11.01
3.61E−6

Example 12.01
>2.00E−5

>2.00E−5

1.00E−5

8.12E−6

Example 12.02
9.24E−7

Example 12.03
5.35E−7

Example 13.01
1.25E−6

Example 13.02
1.66E−7

Example 13.03
1.90E−7

Example 14.01
1.95E−7

Example 14.02
2.83E−7

Example 14.03
5.50E−7

Example 15.01
3.39E−7

Example 15.02
4.01E−7

Example 15.03
3.81E−6

Example 16.01.01
2.30E−7

Example 16.01.02
1.09E−7

Example 16.01.03
1.15E−7

Example 16.01.04
6.70E−8

Example 16.01.05
1.46E−7

Example 16.01.06
2.08E−7

Example 16.02.01
2.26E−6

Example 16.02.02
3.35E−7

Example 16.02.03
2.27E−7

Example 16.02.04
2.68E−7

Example 16.02.05
4.05E−7

Example 16.03.01
1.25E−7

Example 16.03.02
6.31E−8

Example 16.03.03
6.70E−8

Example 16.03.04
5.46E−8

Example 16.03.05
8.47E−8

Example 16.04.01
>2.00E−5

>2.00E−5

1.40E−6

2.61E−6

Example 16.04.02
4.96E−7

Example 16.04.03
3.78E−7

Example 16.04.04
4.97E−7

Example 16.04.05
4.91E−7

Example 16.05.01
8.25E−8

Example 16.05.02
3.30E−8

Example 16.05.03
4.31E−8

Example 16.06.01.A
Not determined

Example 16.06.02.A
1.05E−7

Example 16.06.02.B
1.72E−8

Example 16.06.03.A
1.38E−8

Example 17.01
9.78E−8

Example 17.02
6.49E−8

Example 17.03
5.65E−8

Example 17.04
1.02E−7

Example 17.05
3.82E−8

Example 17.06
6.13E−8

Example 17.07
1.02E−7

Example 18.01
7.24E−8

Example 18.02
1.54E−7

Example 19.01
4.14E−7

Example 20.01
6.85E−7

Example 21.01
1.93E−7

Example 22.01
4.81E−7

Example 22.02
7.79E−7

Example 23.01.01
3.34E−8

Example 23.01.02
2.21E−8

Example 23.02.01
2.04E−8

Example 23.02.02
1.36E−8

Example 23.03.01
1.61E−7

Example 23.04.01
3.44E−9

Example 23.04.02
2.42E−9

Example 23.04.03
2.47E−9

Example 23.05.01.A
2.05E−9

Example 23.05.01.B
1.24E−8

Example 23.05.02.A
8.23E−9

Example 23.05.02.B
1.86E−9

Example 23.05.03.A
2.99E−9

Example 23.05.03.B
1.45E−8

Example 24.01.01
3.54E−8

Example 24.01.02
3.99E−8

Example 24.01.03
4.32E−8

Example 24.01.04
4.44E−8

Example 24.02.01
4.58E−8

Example 24.02.02
6.31E−8

Example 24.03.01
4.78E−7

Example 24.04.01
9.19E−9

Example 24.04.02
1.61E−8

Example 24.04.03
1.24E−8

Example 24.04.04
1.44E−8

Example 24.05.01.A
4.54E−8

Example 24.05.01.B
6.62E−9

Example 24.05.02.A
1.10E−8

Example 24.05.02.B
5.51E−8

Example 24.05.03.A
4.54E−8

Example 24.05.03.B
1.38E−8

Example 24.05.04.A
6.67E−9

Example 24.05.04.B
3.39E−8

Example 25.01.01
1.74E−7

Example 25.01.02
2.18E−7

Example 25.01.03
9.67E−8

Example 25.01.04
7.90E−8

Example 25.01.05
6.45E−8

Example 25.02.01
3.46E−7

Example 26.01.01
3.57E−8

Example 26.01.02
8.58E−9

Example 26.01.03
1.30E−8

Example 26.01.04
1.16E−8

Example 26.01.05
1.41E−8

Example 26.02.01
4.68E−9

Example 26.03.01.A
2.98E−9

Example 26.03.01.B
1.95E−8

Example 27.01
1.64E−7

Example 27.02
2.20E−7

Example 27.03
2.03E−7

Example 27.04
1.97E−7

Example 28.01
1.11E−7

Example 29.01.01
Not determined

Example 29.01.02
3.47E−9

Example 29.02.01.A
9.23E−8

Example 29.02.01.B
8.64E−9

Example 30.01.01
1.50E−8

Example 30.01.02
1.85E−8

Example 30.01.03
1.69E−8

Example 30.01.04
1.23E−8

Example 30.02.01
4.46E−9

Example 30.02.02
7.86E−9

Example 30.02.03
3.73E−9

Example 30.02.04
9.35E−9

Example 30.03.01.A
1.80E−8

Example 30.03.01.B
2.15E−9

Example 30.03.02.A
4.15E−9

Example 30.03.02.B
2.75E−8

Example 30.03.03.A
3.06E−9

Example 30.03.03.B
1.40E−8

Example 31.01
8.68E−8

Example 31.02
7.70E−8

Example 32.01
9.51E−7

Example 32.02
1.17E−6

Example 32.03
5.19E−6

Example 33.01
3.54E−6

Example 33.02
1.59E−6

Example 33.03
1.50E−6

Example 33.04
2.12E−6

Example 34.01.01
5.06E−8

Example 34.02.01
1.24E−8

Example 34.02.02
9.10E−9

Example 34.03.01.A
1.21E−8

Example 34.03.01.B
5.01E−8

Example 34.03.02.A
4.64E−8

Example 34.03.02.B
7.22E−9

Example 35.01.01
1.89E−8

Example 35.01.02
1.80E−8

Example 35.01.03
5.91E−8

Example 35.01.04
2.69E−8

Example 35.01.05
4.80E−8

Example 35.01.06
4.79E−8

Example 35.01.07
7.73E−8

Example 35.01.08
2.43E−8

Example 35.01.09
4.06E−8

Example 35.01.10
3.50E−8

Example 35.01.11
2.86E−8

Example 35.01.12
3.24E−8

Example 35.01.13
6.09E−8

Example 35.01.14
2.28E−8

Example 35.01.15
3.80E−8

Example 35.01.16
4.59E−8

Example 35.01.17
3.92E−8

Example 35.01.18
4.18E−8

Example 35.02.01
7.67E−9

Example 35.02.02
1.15E−8

Example 35.02.03
6.29E−9

Example 35.02.04
1.04E−8

Example 35.03.01.A
3.85E−9

Example 35.03.01.B
3.00E−8

Example 35.03.02.A
8.33E−9

Example 35.03.02.B
3.28E−8

Example 35.03.03.A
5.62E−9

Example 35.03.03.B
3.17E−8

Example 35.03.04.A
8.38E−9

Example 35.03.04.B
3.45E−8

Example 36.01
Not determined

Example 36.02
1.96E−9

Example 36.03
2.13E−9

Example 36.04
2.50E−9

Example 37.01
5.53E−8

Example 37.02
6.25E−8

Example 37.03
5.27E−8

Example 37.04
7.39E−8

Example 38.01
Not determined

Example 38.02
5.04E−8

Example 38.03
5.58E−8

Example 39.01.01
Not determined

Example 39.01.02
5.89E−9

Example 39.01.03
5.35E−9

Example 39.02.01
8.61E−9

Example 39.02.02
1.80E−9

Example 39.02.03
1.66E−9

Example 40.01
1.13E−6

Example 40.02
1.27E−6

Example 40.03
9.88E−7

Example 40.04
1.39E−6

Example 41.01
Not determined

Example 41.02
6.81E−7

Example 41.03
7.70E−7

Example 42.01
5.77E−7

Example 42.02
3.97E−7

Example 43.01
2.62E−7

Example 43.02
1.84E−6

Example 43.03
6.96E−7

Example 44.01
9.40E−8

Example 44.02
6.68E−8

Example 44.03
8.58E−8

Example 45.01.01
3.23E−7

Example 45.01.02
3.97E−7

Example 45.01.03
2.05E−7

Example 45.02.01
1.24E−7

Example 45.02.02
3.80E−7

Example 45.03.01
3.79E−6

Example 45.03.02
1.33E−6

Example 45.04.01
2.24E−6

Example 45.05.01
1.43E−6

Example 45.05.02
1.02E−6

Example 45.05.03
8.40E−7

Example 46.01
3.25E−8

Example 46.02
7.22E−8

Example 47.01
3.94E−7

Example 47.02
5.04E−7

Example 48.01
1.93E−7

Example 49.01
2.17E−7

Example 50.01
4.99E−7

Example 50.02
3.33E−7

Example 50.03
6.45E−7

Example 51.01
1.48E−7

Example 51.02
2.70E−7

Example 51.03
1.13E−7

Example 51.04
2.03E−7

Example 52.01
6.47E−8

Example 52.02
3.69E−8

Example 53.01
1.32E−7

Example 53.02
1.21E−7

Example 54.01
2.43E−7

Example 54.02
2.29E−7

Example 55.01
4.05E−9

Example 55.02
1.06E−9

Example 55.03
5.64E−10

Example 56.01
1.65E−8

Example 56.02
2.63E−9

Example 57.01
7.83E−9

Example 58.01.01
1.28E−8

Example 58.01.02
9.81E−9

Example 58.01.03
6.44E−9

Example 59.01.01
1.42E−8

Example 59.01.02
1.88E−9

Example 59.01.03
2.59E−9

Example 59.02.01
7.56E−9

Example 59.02.02
6.71E−9

Example 60.01
4.30E−8

Example 61.01.01
1.97E−8

Example 61.01.02
2.30E−8

Example 62.01.01
5.73E−8

Example 62.01.02
9.54E−9

Example 62.01.03
3.38E−9

Example 62.01.04
5.19E−9

Example 63.01.01
3.64E−8

Example 64.01.01
2.17E−7

Example 64.01.02
3.37E−8

Example 64.01.03
4.70E−8

Example 65.01.01
2.55E−7

Example 65.01.02
5.84E−8

Example 66.01.01
3.33E−8

Example 66.01.02
3.30E−8

Example 55.01.01
5.5E−9

Example 55.01.02
4.8E−9

Example 55.02.01
7.2E−10

Example 55.02.02
1.3E−9

Example 55.03.01
6.1E−10

Example 55.03.02
6.6E−10

Example 67.01
4.6E−8

Example 67.02
2.9E−9

Example 67.03
2.0E−9

Example 68.01
2.6E−8

Example 68.02
1.5E−9

Example 69.01
1.2E−8

Example 69.02
6.4E−10

Example 70.01
8.8E−10

Example 70.02
7.3E−10

Example 71.01
1.0E−7

Example 71.02
7.1E−9

Example 72.01
8.0E−7

Example 72.02
2.5E−7

Example 72.03
1.0E−7

Example 73.01
6.7E−8

Example 74.01
1.2E−7

Example 74.02
1.9E−8

Example 75.01
2.0E−8

Example 75.02
1.4E−9

Example 75.03
8.8E−10

Example 76.01
3.2E−9

Example 76.02
9.4E−9

Example 77.01
9.2E−9

Example 78.01
2.2E−8

Example 78.02
1.5E−8

Example 79.01
8.3E−9

Example 79.02
4.8E−9

Example 79.03
3.3E−9

Example 80.01
3.3E−8

Example 80.02
4.5E−9

Example 80.03
2.9E−9

Example 81.01
1.3E−8

Example 82.01
3.6E−9

Example 83.01
1.4E−8

Example 83.02
1.0E−8

Example 83.03
2.2E−9

Example 83.04
1.5E−9

Example 83.05
2.9E−9

Example 84.01
1.1E−9

Example 84.02
7.0E−10

Example 84.03
1.7E−9

Example 85.01
5.7E−9

Example 85.02
1.4E−8

Example 85.03
1.8E−9

Example 86.01
1.1E−8

Example 86.02
2.1E−9

Example 86.03
1.5E−9

Example 87.01
2.3E−9

Example 87.02
2.0E−9

Example 88.01
1.1E−5

Example 88.02
8.6E−7

Example 88.03
9.9E−7

Example 89.01
6.1E−7

Example 89.02
4.5E−7

Example 89.03
3.2E−7

Example 90.01
5.7E−9

Example 90.02
1.1E−8

Example 91.01
1.7E−8

Example 91.02
1.2E−8

Example 91.03
1.3E−8

Example 92.01
8.8E−8

Example 92.02
4.5E−7

Example 93.01
2.3E−9

Example 94.01
7.2E−9

Example 95.01
6.6E−9

Example 95.02
9.5E−9

Example 96.01
4.6E−8

Example 96.02
2.2E−8

Example 97.01
2.1E−8

Example 97.02
1.8E−8

Example 97.03
2.9E−8

Example 98.01
1.0E−7

Example 98.02
4.4E−8

Example 98.03
7.6E−8

Example 99.01
3.3E−8

Compound 95.01
3.9E−8

Example 100.03
2.0E−9

Example 100.01
1.5E−9

Example 101.01
6.8E−7

Example 101.02
6.8E−7

Example 101.03
6.9E−7

Example 101.04
3.0E−6

Example 101.05
7.8E−7

Example 101.06
9.9E−7

Example 101.07
1.7E−7

Example 101.08
>2.0E−5

Example 101.09
4.6E−7

Example 101.10
1.8E−7

Example 101.11
>2.0E−5

Example 101.12
4.5E−7

Example 101.13
3.6E−7

Example 101.14
4.3E−7

Example 101.15
2.1E−7

Example 101.16
1.9E−7

Example 101.17
1.5E−7

Example 101.18
1.5E−6

Example 101.19
3.4E−7

Example 101.20
5.6E−7

Example 101.21
>5.7E−5

Example 101.22
Not determined

Example 101.23
2.8E−7

Example 101.24
1.6E−7

Example 101.26
3.1E−7

Example 101.27
3.5E−7

Example 101.28
2.1E−7

Example 101.29
4.5E−7

Example 101.30
5.6E−7

Example 101.31
5.1E−7

Example 102.01
7.1E−7

Example 103.01
3.6E−7

Example 104.01
2.6E−6

Example 105.01
2.7E−7

Example 106.01
1.5E−6

Compound 60.01
1.1E−7

Example 107.01.01
5.2E−8

Example 107.01.02
1.6E−8

Example 107.01.03
1.3E−8

Example 107.02.01
2.1E−8

Example 107.02.02
5.9E−9

Example 107.02.03
5.4E−9

Example 107.02.04
5.2E−9

Example 108.01
3.5E−8

Example 108.02
8.2E−9

Example 108.03
8.9E−9

Example 109.01.01
9.2E−9

Example 109.01.02
5.4E−9

Example 109.01.03
8.7E−9

Example 109.02.01
8.0E−9

Example 109.02.02
2.0E−9

Example 109.02.03
2.4E−9

Example 110.01
Not determined

Example 110.02
3.0E−8

Example 110.03
5.2E−8

Example 110.04
6.2E−8

Example 111.01
2.6E−9

Example 111.02
1.0E−9

Example 111.03
1.4E−9

Example 112.01
8.2E−9

Example 112.02
1.3E−9

Example 112.03
1.4E−9

Example 113.01
6.1E−9

Example 113.02
1.6E−9

Example 113.03
1.1E−9

Example 114.01
6.1E−8

Example 115.01
1.4E−9

Example 115.02
7.6E−10

Example 115.03
6.2E−10

Example 116.02
7.6E−10

Example 116.03
1.3E−9

Example 116.04
1.0E−9

Example 117.01
2.0E−9

Example 117.02
3.3E−10

Example 117.03
4.9E−10

Example 118.01
7.9E−9

Example 118.02
3.3E−9

Example 118.03
1.4E−9

Example 118.04
2.6E−9

Example 119.01
Not determined

Example 120.02
1.7E−8

Example 121.01
1.1E−8

Example 121.02
2.5E−9

Example 121.03
1.6E−9

Example 122.01
9.3E−9

Example 122.02
1.2E−9

Example 122.03
1.1E−9

Example 123.01
3.6E−8

Example 123.02
3.5E−8

Example 123.03
2.6E−8

Example 124.02
1.0E−7

Example 125.02
6.5E−7

Example 126.02
3.9E−9

Example 130.01
8.9E−7

Example 130.02
1.9E−7

Example 130.03
2.5E−7

Example 131.01
1.4E−7

Example 131.02
6.2E−8

Example 131.03
3.2E−8

Example 132.01
1.8E−7

Example 132.02
1.9E−7

Example 132.03
2.6E−7

Example 133.01
2.8E−7

Example 133.02
1.4E−7

Example 134.01
5.7E−8

Example 134.02
1.1E−8

Example 134.03
1.9E−8

Example 135.01
7.1E−8

Example 135.02
2.3E−8

Example 135.03
3.0E−8

Example 136.01
5.3E−8

Example 136.02
3.8E−8

Example 136.03
2.1E−8

Example 137.01
1.3E−8

Example 137.02
5.8E−9

Example 137.03
2.0E−8

Example 138.01
5.8E−9

Example 138.02
4.1E−9

Example 138.03
4.3E−9

Example 139.01
5.5E−8

Example 139.02
1.5E−8

Example 139.03
9.7E−9

Example 140.01
1.3E−8

Example 140.02
5.4E−7

Example 140.03
2.9E−7

Example 141.01
4.3E−8

Example 141.02
1.9E−8

Example 141.03
1.3E−8

Example 142.01
7.5E−9

Example 142.02
6.6E−9

Example 142.03
3.0E−9

Example 143.01
1.8E−8

Example 143.02
8.2E−9

Example 143.03
4.8E−9

Example 144.01
5.1E−7

Example 144.02
3.5E−7

Example 144.03
4.4E−7

Example 145.01
1.3E−8

Example 145.02
2.9E−9

Example 145.03
2.1E−9

Example 146.01
1.4E−8

Example 146.02
9.8E−9

Example 147.01
Not determined

Example 147.02
1.8E−9

Example 148.01
2.5E−8

Example 148.02
6.5E−9

Example 148.03
4.8E−9

Example 149.01
4.7E−9

Example 149.02
2.0E−9

Example 149.03
2.3E−9

Example 150.01
1.5E−8

Example 150.02
9.6E−9

Example 150.03
5.4E−9

Example 151.02
2.1E−9

Example 151.03
1.0E−9

Example 152.02
4.8E−10

Example 152.03
9.6E−10

Example 153.01
1.4E−8

Example 153.02
5.9E−9

Example 153.03
5.0E−9

Example 154.01
4.2E−9

Example 154.02
3.3E−9

Example 154.03
1.4E−9

Example 155.01
3.6E−8

Example 155.02
1.5E−8

Example 155.03
1.7E−8

Example 156.01
3.8E−8

Example 156.02
9.3E−9

Example 156.03
1.9E−8

Example 157.01
2.5E−8

Example 157.02
8.9E−9

Example 157.03
7.6E−9

Example 158.01
1.6E−7

Example 158.02
2.1E−8

Example 158.03
1.3E−8

Example 159.01
3.1E−7

Example 159.02
1.5E−8

Example 160.01
6.4E−8

Example 160.02
1.3E−8

Example 160.03
8.5E−9

Example 161.01
Not determined

Example 161.02
7.7E−9

Example 161.03
6.7E−9

Example 162.02
2.0E−8

Example 163.02
1.9E−8

Example 163.03
1.8E−8

Example 04.07
1.00E−8

Example 04.08
1.38E−8

Example 04.09
2.85E−8

Example 04.10
2.83E−8

Example 16.06.04
2.17E−8

Example 16.06.05
1.81E−8

Example 16.06.06
7.30E−8

Example 114.02
8.27E−9

Example 114.03
8.07E−9

Example 117.04
8.19E−10

Example 117.05
4.73E−10

Example 117.06
8.60E−10

Example 117.07
2.70E−9

Example 119.02
6.69E−9

Example 119.03
5.93E−9

Example 119.04
1.09E−8

Example 119.05
6.35E−9

Example 164.01
5.48E−9

Example 164.02
9.43E−10

Example 164.03
5.58E−10

Example 164.04
8.32E−10

Example 164.05
5.66E−10

Example 165.01
Not determined

Example 165.02
1.71E−9

Example 165.03
1.79E−9

Example 166.01
3.00E−7

Example 166.02
2.05E−8

Example 166.03
2.11E−8

Example 166.04
5.42E−8

Example 166.05
3.42E−8

Example 167.01
2.22E−7

Example 167.02
3.50E−8

Example 167.03
4.13E−8

Example 167.04
2.37E−8

Example 168.01
Not determined

Example 168.02
4.18E−9

Example 168.03
7.12E−9

Example 169.01
Not determined

Example 169.02
1.16E−8

Example 169.03
1.66E−8

Example 170.01
Not determined

Example 170.02
5.21E−9

Example 171.01
Not determined

Example 171.02
5.95E−9

Example 171.03
2.85E−9

Example 172.01
3.98E−8

Example 172.02
1.21E−8

Example 172.03
1.50E−8

Example 172.04
2.09E−8

Example 173.01
3.96E−7

Example 173.02
7.71E−8

Example 173.03
5.06E−8

Example 173.04
1.49E−7

Example 174.01
1.11E−8

Example 174.02
3.63E−9

Example 174.03
3.26E−9

Example 175.01
Not determined

Example 175.02
3.53E−7

Example 175.03
2.23E−7

Example 176.01
Not determined

Example 176.02
3.58E−6

Example 177.01
2.27E−7

Example 177.02
7.45E−8

Example 178.01
8.90E−7

Example 178.02
4.02E−7

Example 179.01
3.01E−6

Example 179.02
1.14E−6

Example 179.03
1.26E−6

Example 180.01
5.76E−7

Example 180.02
5.56E−7

Example 180.03
3.64E−7

Example 181.01
7.91E−7

Example 181.02
1.52E−7

Example 181.03
3.62E−7

Example 182.01
2.75E−7

Example 182.02
1.10E−7

Example 182.03
1.36E−7

Example 183.01
7.28E−6

Example 183.02
2.10E−6

Example 183.03
2.24E−6

Example 184.01
Not determined

Example 184.02
2.01E−7

Example 184.03
2.16E−7

Example 185.01
2.12E−7

Example 186.01
5.91E−8

Example 187.01
Not determined

Example 188.01
Not determined

Example 189.01
Not determined

Example 189.02
2.86E−8

Example 190.01
Not determined

Example 190.02
8.68E−7

Example 191.01
Not determined

Example 191.02
9.53E−8

Example 191.03
9.48E−8

Example 192.01
Not determined

Example 192.02
1.83E−8

Example 192.03
8.30E−9

Example 193.01
4.21E−8

Example 193.02
3.46E−8

Example 193.03
1.78E−8

Example 194.01
Not determined

Example 194.02
4.59E−8

Example 194.03
4.94E−8

Example 195.01
1.05E−7

Example 195.02
3.37E−8

Example 195.03
3.41E−8

Example 196.01
1.53E−6

Example 196.02
1.83E−6

Example 196.03
1.42E−6

Example 197.01
Not determined

Example 198.01
4.38E−8

Example 199.01
Not determined

Example 199.02
4.19E−8

Example 197.04
6.46E−9

Number	Date	Country	Kind
15201230	Dec 2015	EP	regional
16160885	Mar 2016	EP	regional
16193418	Oct 2016	EP	regional

Number	Name	Date	Kind
20050038023	Bebbington et al.	Feb 2005	A1
20150344473	Du et al.	Dec 2015	A1
20160289196	Choi et al.	Oct 2016	A1
20160297815	Choi et al.	Oct 2016	A1

Heteroarylbenzimidazole compounds

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

CPC

Field of Search

CPC

International Classifications

Abstract

Description

Claims

Priority Claims (3)

PCT Information

US Referenced Citations (4)

Foreign Referenced Citations (29)

Non-Patent Literature Citations (30)

Related Publications (1)

Number	Date	Country
103251600	Aug 2013	CN
1998056376	Dec 1998	WO
2002076438	Oct 2002	WO
2004058762	Jul 2004	WO
2004085425	Oct 2004	WO
2005020921	Mar 2005	WO
2006099379	Sep 2006	WO
2007084390	Jul 2007	WO
2007089512	Aug 2007	WO
2007100646	Sep 2007	WO
2008057280	May 2008	WO
2010034797	Apr 2010	WO
2010115736	Oct 2010	WO
2010122754	Nov 2010	WO
2011046970	Apr 2011	WO
2011161159	Dec 2011	WO
2012010826	Jan 2012	WO
2012068546	May 2012	WO
2012068546	May 2012	WO
2012104007	Aug 2012	WO
2012161877	Nov 2012	WO
2012161879	Nov 2012	WO
2013024282	Feb 2013	WO
2013024282	Feb 2013	WO
2013034238	Mar 2013	WO
2013075785	May 2013	WO
2013117285	Aug 2013	WO
2014004863	Jan 2014	WO
2015031564	Mar 2015	WO