Patent Grant
8653100
This is the U.S. national stage entry of International Patent Application No. PCT/EP2009/053800, filed on Mar. 31, 2009, which is the non-provisional of U.S. Provisional Patent Application No. 61/041,313, filed on Apr. 1, 2008, the contents of all of which are hereby incorporated by reference.
The present invention relates to tetrahydroisoquinolines, pharmaceutical compositions comprising such quinolines, and the use of such quinolines for therapeutic purposes. The quinolines are GlyT1 inhibitors.
Dysfunction of glutamatergic pathways has been implicated in a number of disease states in the human central nervous system (CNS) including but not limited to schizophrenia, cognitive deficits, dementia, Parkinson disease, Alzheimer disease and bipolar disorder. A large number of studies in animal models lend support to the NMDA hypofunction hypothesis of schizophrenia.
NMDA receptor function can be modulated by altering the availability of the co-agonist glycine. This approach has the critical advantage of maintaining activity-dependent activation of the NMDA receptor because an increase in the synaptic concentration of glycine will not produce an activation of NMDA receptors in the absence of glutamate. Since synaptic glutamate levels are tightly maintained by high affinity transport mechanisms, an increased activation of the glycine site will only enhance the NMDA component of activated synapses.
Two specific glycine transporters, GlyT1 and GlyT2 have been identified and shown to belong to the Na/Cl-dependent family of neurotransmitter transporters which includes taurine, gamma-aminobutyric acid (GABA), proline, monoamines and orphan transporters. GlyT1 and GlyT2 have been isolated from different species and shown to have only 50% identity at the amino acid level. They also have a different pattern of expression in mammalian central nervous system, with GlyT2 being expressed in spinal cord, brainstem and cerebellum and GlyT1 present in these regions as well as forebrain areas such as cortex, hippocampus, septum and thalamus. At the cellular level, GlyT2 has been reported to be expressed by glycinergic nerve endings in rat spinal cord whereas GlyT1 appears to be preferentially expressed by glial cells. These expression studies have led to the suggestion that GlyT2 is predominantly responsible for glycine uptake at glycinergic synapses whereas GlyT1 is involved in monitoring glycine concentration in the vicinity of NMDA receptor expressing synapses. Recent functional studies in rat have shown that blockade of GlyT1 with the potent inhibitor (N-[3-(4′-fluorophenyl)-3-(4′-phenylphenoxy)propyl])-sarcosine (NFPS) potentiates NMDA receptor activity and NMDA receptor-dependent long-term potentiation in rat.
Molecular cloning has further revealed the existence of three variants of GlyT1, termed GlyT-1a, GlyT-1b and GlyT-1c, each of which displays a unique distribution in the brain and peripheral tissues. The variants arise by differential splicing and exon usage, and differ in their N-terminal regions.
The physiological effects of GlyT1 in forebrain regions together with clinical reports showing the beneficial effects of GlyT1 inhibitor sarcosine in improving symptoms in schizophrenia patients suggest that selective GlyT1 inhibitors represent a new class of antipsychotic drugs.
Glycine transporter inhibitors are already known in the art, for example:
(see also Hashimoto K., Recent patents on CNS Drug Discovery, 2006, 1, 43-53; Harsing L. G. et al., Current Medicinal Chemistry, 2006, 13, 1017-1044; Javitt D.C., Molecular Psychiatry (2004) 9, 984-997; Lindsley, C. W. et al., Current Topics in Medicinal Chemistry, 2006, 6, 771-785; Lindsley C. W. et al., Current Topics in Medicinal Chemistry, 2006, 6, 1883-1896).
It was one object of the present invention to provide further glycine transporter inhibitors.
The present invention relates to tetrahydroisoquinolines of the formula (Ia)
wherein
The present invention further relates to tetrahydroisoquinolines of the formula (Ib)
wherein R2, R3, R4, R5, R6 and R7 are as defined herein.
Said compounds, i.e., the tetrahydroisoquinolines and their physiologically tolerated acid addition salts, are glycine transporter inhibitors and thus useful as pharmaceuticals.
The present invention thus further relates to the compounds of formula (Ia) or (Ib) for use in therapy.
The present invention also relates to pharmaceutical compositions which comprise a carrier and a compound of formula (Ia) or (Ib).
In particular, said compounds, i.e., the tetrahydroisoquinolines and their physiologically tolerated acid addition salts, are inhibitors of the glycine transporter GlyT1.
The present invention thus further relates to the compounds of formula (Ia) or (Ib) for use in inhibiting the glycine transporter.
The present invention also relates to the use of the compounds of formula (Ia) or (Ib) in the manufacture of a medicament for inhibiting the glycine transporter GlyT1 and corresponding methods of inhibiting the glycine transporter GlyT1.
Glycine transport inhibitors and in particular inhibitors of the glycine transporter GlyT1 are known to be useful in treating a variety of neurologic and psychiatric disorders.
The present invention thus further relates to the compounds of formula (Ia) or (Ib) for use in treating a neurologic or psychiatric disorder.
The present invention also relates to the use of the compounds of formula (Ia) or (Ib) in the manufacture of a medicament for treating a neurologic or psychiatric disorder and corresponding methods of treating said disorders.
The present invention further relates to dihyroisoquinolines of formula (IIa)
wherein R1, W, A1, Q, Y, A2, X, R2, R3, R5, R6 and R7 are defined as herein.
The present invention further relates to dihyroisoquinolines of formula (IIb)
wherein R2, R3, R5, R6 and R7 are defined as herein.
The dihyroisoquinolines of formula (IIa) and (IIb) are useful as intermediates in the preparation of GlyT1 inhibitors, in particular those of formula (Ia) and (Ib), respectively.
Provided that the tetrahydroisoquinolines of the formula (Ia) and (Ib) of a given constitution may exist in different spatial arrangements, for example if they possess one or more centers of asymmetry, polysubstituted rings or double bonds, or as different tautomers, it is also possible to use enantiomeric mixtures, in particular racemates, diastereomeric mixtures and tautomeric mixtures, preferably, however, the respective essentially pure enantiomers, diastereomers and tautomers of the compounds of formula (Ia) and (Ib) and/or of their salts.
According to one embodiment, an enantiomer of the tetrahydroisoquinolines of the present invention has the following formula:
wherein R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6 and R7 are as defined herein.
According to another embodiment, an enantiomer of the tetrahydroisoquinolines of the present invention has the following formula:
wherein R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6 and R7 are as defined herein.
The physiologically tolerated salts of the tetrahydroisoquinolines of the formula (Ia) and (Ib) are especially acid addition salts with physiologically tolerated acids. Examples of suitable physiologically tolerated organic and inorganic acids are hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid, C1-C4-alkylsulfonic acids, such as methanesulfonic acid, cycloaliphatic sulfonic acids, such as S-(+)-10-campher sulfonic acid, aromatic sulfonic acids, such as benzenesulfonic acid and toluenesulfonic acid, di- and tricarboxylic acids and hydroxycarboxylic acids having 2 to 10 carbon atoms, such as oxalic acid, malonic acid, maleic acid, fumaric acid, lactic acid, tartaric acid, citric acid, glycolic acid, adipic acid and benzoic acid. Other utilizable acids are described, e.g., in Fortschritte der Arzneimittelforschung [Advances in drug research], Volume 10, pages 224 ff., Birkhä user Verlag, Basel and Stuttgart, 1966.
The organic moieties mentioned in the above definitions of the variables are—like the term halogen—collective terms for individual listings of the individual group members. The prefix Cn-Cm indicates in each case the possible number of carbon atoms in the group.
Unless indicated otherwise, the term “substituted” means that a radical is substituted with 1, 2 or 3, especially 1, substituent which are in particular selected from the group consisting of halogen, C1-C4-alkyl, hydroxy-C1-C4-alkyl, C3-C12-heterocyclyl-alkyl, C1-C4-alkoxy-C1-C4-alkyl, amino-C1-C4-alkyl, C1-C4-alkenyl, OH, SH, CN, CF3, O—CF3, COON, O—CH2—COOH, C1-C6-alkoxy, C1-C6-alkylthio, C3-C7-cycloalkyl, COO—C1-C6-alkyl, CONH2, CONH—C1-C6 alkyl, SO2NH—C1-C6-alkyl, CON—(C1-C6-alkyl)2, SO2N—(C1-C6-alkyl)2, NH2, NH—C1-C6-alkyl, N—(C1-C6-alkyl)2, NH—(C1-C4-alkyl-C6-C12-aryl), NH—CO—C1-C6 alkyl, NH—SO2—C1-C6-alkyl, SO2—C1-C6-alkyl, C6-C12-aryl, O—C6-C12-aryl, O—CH2—C6-C12-aryl, CONH—C6-C12-aryl, SO2NH—C6-C12-aryl, CONH—C3-C12-heterocyclyl, SO2NH—C3-C12-heterocyclyl, SO2—C6-C12-aryl, NH—SO2—C6-C12-aryl, NH—CO—C6-C12-aryl, NH—SO2—C3-C12-heterocyclyl, NH—CO—C3-C12-heterocyclyl and C3-C12-heterocyclyl (C1-C4haloalkyl, C3-C12-aryl-alkyl, CO—C1-C6-alkyl, COO—C1-C4-alkyl-C3-C12-aryl, COO—C1-C4-alkyl-C3-C12-heterocyclyl, C1-C4-haloalkoxy and carbamoylamino being further examples of such substituents), wherein aryl and heterocyclyl in turn may be unsubstituted or substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy and C1-C4-haloalkoxy.
The term halogen denotes in each case fluorine, bromine, chlorine or iodine, in particular fluorine or chlorine.
C1-C4-Alkyl is a straight-chain or branched alkyl group having from 1 to 4 carbon atoms. Examples of an alkyl group are methyl, C2-C4-alkyl such as ethyl, n-propyl, iso-propyl, n-butyl, 2-butyl, iso-butyl or tert-butyl. C1-C2-Alkyl is methyl or ethyl, C1-C3-alkyl is additionally n-propyl or isopropyl.
C1-C6-Alkyl is a straight-chain or branched alkyl group having from 1 to 6 carbon atoms. Examples include methyl, C2-C4-alkyl as mentioned herein and also pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, 3,3-dimethylbutyl, 1-ethylbutyl, 2-ethylbutyl, 1,1,2-trimethylpropyl, 1,2,2-trimethylpropyl, 1-ethyl-1-methylpropyl and 1-ethyl-2-methylpropyl.
Halogenated C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms, such as in halogenomethyl, dihalogenomethyl, trihalogenomethyl, (R)-1-halogenoethyl, (S)-1-halogenoethyl, 2-halogenoethyl, 1,1-dihalogenoethyl, 2,2-dihalogenoethyl, 2,2,2-trihalogenoethyl, (R)-1-halogenopropyl, (S)-1-halogenopropyl, 2-halogenopropyl, 3-halogenopropyl, 1,1-dihalogenopropyl, 2,2-dihalogenopropyl, 3,3-dihalogenopropyl, 3,3,3-trihalogenopropyl, (R)-2-halogeno-1-methylethyl, (S)-2-halogeno-1-methylethyl, (R)-2,2-dihalogeno-1-methylethyl, (S)-2,2-dihalogeno-1-methylethyl, (R)-1,2-dihalogeno-1-methylethyl, (S)-1,2-dihalogeno-1-methylethyl, (R)-2,2,2-trihalogeno-1-methylethyl, (S)-2,2,2-trihalogeno-1-methylethyl, 2-halogeno-1-(halogenomethyl)ethyl, 1-(dihalogenomethyl)-2,2-dihalogenoethyl, (R)-1-halogenobutyl, (S)-1-halogenobutyl, 2-halogenobutyl, 3-halogenobutyl, 4-halogenobutyl, 1,1-dihalogenobutyl, 2,2-dihalogenobutyl, 3,3-dihalogenobutyl, 4,4-dihalogenobutyl, 4,4,4-trihalogenobutyl, etc. Particular examples include the fluorinated C1-C4 alkyl groups as defined, such as trifluoromethyl. C6-C12-Aryl-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by C6-C12-aryl, such as in benzyl.
Hydroxy-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, wherein one or two hydrogen atoms are replaced by one or two hydroxyl groups, such as in hydroxymethyl, (R)-1-hydroxyethyl, (S)-1-hydroxyethyl, 2-hydroxyethyl, (R)-1-hydroxypropyl, (S)-1-hydroxypropyl, 2-hydroxypropyl, 3-hydroxypropyl, (R)-2-hydroxy-1-methylethyl, (S)-2-hydroxy-1-methylethyl, 2-hydroxy-1-(hydroxymethyl)ethyl, (R)-1-hydroxybutyl, (S)-1-hydroxybutyl, 2-hydroxybutyl, 3-hydroxybutyl, 4-hydroxybutyl.
C1-C6-Alkoxy-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, wherein one or two hydrogen atoms are replaced by one or two alkoxy groups having 1 to 6, preferably 1 to 4, in particular 1 or 2 carbon atoms, such as in methoxymethyl, (R)-1-methoxyethyl, (S)-1-methoxyethyl, 2-methoxyethyl, (R)-1-methoxypropyl, (S)-1-methoxypropyl, 2-methoxypropyl, 3-methoxypropyl, (R)-2-methoxy-1-methylethyl, (S)-2-methoxy-1-methylethyl, 2-methoxy-1-(methoxymethyl)ethyl, (R)-1-methoxybutyl, (S)-1-methoxybutyl, 2-methoxybutyl, 3-methoxybutyl, 4-methoxybutyl, ethoxymethyl, (R)-1-ethoxyethyl, (S)-1-ethoxyethyl, 2-ethoxyethyl, (R)-1-ethoxypropyl, (S)-1-ethoxypropyl, 2-ethoxypropyl, 3-ethoxypropyl, (R)-2-ethoxy-1-methylethyl, (S)-2-ethoxy-1-methylethyl, 2-ethoxy-1-(ethoxymethyl)ethyl, (R)-1-ethoxybutyl, (S)-1-ethoxybutyl, 2-ethoxybutyl, 3-ethoxybutyl, 4-ethoxybutyl.
Amino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by an amino group, such as in aminomethyl, 2-aminoethyl.
C1-C6-Alkylamino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a C1-C6-alkylamino group, in particular by a C1-C4-alkylamino group, such as in methylaminomethyl, ethylaminomethyl, n-propylaminomethyl, iso-propylaminomethyl, n-butylaminomethyl, 2-butylaminomethyl, iso-butylaminomethyl or tert-butylaminomethyl.
Di-C1-C6-Alkylamino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a di-C1-C6-alkylamino group, in particular by a di-C1-C4-alkylamino group, such as in dimethylaminomethyl.
C1-C6-Alkylcarbonylamino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a C1-C6-alkylcarbonylamino group, in particular by a C1-C4-alkylcarbonylamino group, such as in methylcarbonylaminomethyl, ethylcarbonylaminomethyl, n-propylcarbonylaminomethyl, iso-propylcarbonylaminomethyl, n-butylcarbonylaminomethyl, 2-butylcarbonylaminomethyl, iso-butylcarbonylaminomethyl or tert-butylcarbonylaminomethyl.
C1-C6-Alkylaminocarbonylamino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a C1-C6-alkylaminocarbonylamino group, in particular by a C1-C4-alkylaminocarbonylamino group, such as in methylaminocarbonylaminomethyl, ethylaminocarbonylaminomethyl, n-propylaminocarbonylaminomethyl, iso-propylaminocarbonylaminomethyl, n-butylaminocarbonylaminomethyl, 2-butylaminocarbonylaminomethyl, iso-butylaminocarbonylaminomethyl or tert-butylaminocarbonylaminomethyl.
Di-C1-C6-alkylaminocarbonylamino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a di-C1-C6-alkylaminocarbonylamino group, in particular by a di-C1-C4-alkylaminocarbonylamino group, such as in dimethylaminocarbonylaminomethyl, dimethylaminocarbonylaminoethyl, dimethylaminocarbonylaminon-propyl.
C1-C6-Alkylsulfonylamino-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a C1-C6-alkylsulfonylamino group, in particular by a C1-C4-alkylsulfonylamino group, such as in methylsulfonylaminomethyl, ethylsulfonylaminomethyl, n-propylsulfonylaminomethyl, iso-propylsulfonylaminomethyl, n-butylsulfonylaminomethyl, 2-butylsulfonylaminomethyl, iso-butylsulfonylaminomethyl or tert-butylsulfonylaminomethyl.
(C6-C12-Aryl-C1-C6-alkyl)amino-C1-C4 alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by a (C6-C12-aryl-C1-C6-alkyl)amino group, in particular a (C6-C12-aryl-C1-C2-alkyl)amino group, such as in benzylaminomethyl.
C3-C12-Heterocyclyl-C1-C4-alkyl is a straight-chain or branched alkyl group having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, more preferably 1 or 2 carbon atoms, in particular 1 or two carbon atoms, wherein one hydrogen atom is replaced by C3-C12-heterocyclyl, such as in N-pyrrolidinylmethyl, N-piperidinylmethyl, N-morpholinylmethyl.
C3-C12-Cycloalkyl is a cycloaliphatic radical having from 3 to 12 carbon atoms. In particular, 3 to 6 carbon atoms form the cyclic structure, such as cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl. The cyclic structure may be unsubstituted or may carry 1, 2, 3 or 4 C1-C4 alkyl radicals, preferably one or more methyl radicals.
Carbonyl is >C═O.
C1-C6-Alkylcarbonyl is a radical of the formula R—C(O)—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4, in particular 1 or 2 carbon atoms as defined herein. Examples include acetyl, propionyl, n-butyryl, 2-methylpropionyl, pivaloyl.
Halogenated C1-C6alkylcarbonyl is C1-C6-alkylcarbonyl as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
C6-C12-Arylcarbonyl is a radical of the formula R—C(O)—, wherein R is an aryl radical having from 6 to 12 carbon atoms as defined herein. Examples include benzoyl.
C1-C6-Alkoxycarbonyl is a radical of the formula R—O—C(O)—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4, in particular 1 or 2 carbon atoms as defined herein. Examples include methoxycarbonyl.
Halogenated C1-C6-alkoxycarbonyl is a C1-C6-alkoxycarbonyl as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
C6-C12-Aryloxycarbonyl is a radical of the formula R—O—C(O)—, wherein R is an aryl radical having from 6 to 12 carbon atoms as defined herein. Examples include phenoxycarbonyl.
Cyano is —C≡N.
Aminocarbonyl is NH2C(O)—.
C1-C6-Alkylaminocarbonyl is a radical of the formula R—NH—C(O)—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4, in particular 1 or 2 carbon atoms as defined herein. Examples include methylaminocarbonyl.
(Halogenated C1-C4-alkyl)aminocarbonyl is a C1-C4-alkylaminocarbonyl as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different hydrogen atoms.
C6-C12-Arylaminocarbonyl is a radical of the formula R—NH—C(O)—, wherein R is an aryl radical having from 6 to 12 carbon atoms as defined herein. Examples include phenylaminocarbonyl.
C2-C6-Alkenyl is a singly unsaturated hydrocarbon radical having 2, 3, 4, 5 or 6 carbon atoms, e.g. vinyl, allyl (2-propen-1-yl), 1-propen-1-yl, 2-propen-2-yl, methallyl(2-methylprop-2-en-1-yl) and the like. C3-C5-Alkenyl is, in particular, allyl, 1-methylprop-2-en-1-yl, 2-buten-1-yl, 3-buten-1-yl, methallyl, 2-penten-1-yl, 3-penten-1-yl, 4-penten-1-yl, 1-methylbut-2-en-1-yl or 2-ethylprop-2-en-1-yl.
C2-C6-Alkynyl is a singly unsaturated hydrocarbon radical having 2, 3, 4, 5 or 6 carbon atoms, e.g. ethynyl, 2-propyn-1-yl, 1-propyn-1-yl, 2-propyn-2-yl and the like. C3-C5-Alkynyl is, in particular, 2-propyn-1-yl, 2-butyn-1-yl, 3-butyn-1-yl, 2-pentyn-1-yl, 3-pentyn-1-yl, 4-pentyn-1-yl.
C1-C4-Alkylene is straight-chain or branched alkylene group having from 1 to 4 carbon atoms. Examples include methylene and ethylene.
C6-C12-Aryl is a 6- to 12-membered, in particular 6- to 10-membered, aromatic cyclic radical. Examples include phenyl and naphthyl.
C3-C12-Arylene is an aryl diradical. Examples include phen-1,4-ylene and phen-1,3-ylene. A further example is phen-1,2-ylene.
Hydroxy is —OH.
C1-C6-Alkoxy is a radical of the formula R—O—, wherein R is a straight-chain or branched alkyl group having from 1 to 6, in particular 1 to 4 carbon atoms. Examples include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, 2-butoxy, iso-butoxy (2-methylpropoxy), tert.-butoxy pentyloxy, 1-methylbutoxy, 2-methylbutoxy, 3-methylbutoxy, 2,2-dimethylpropoxy, 1-ethylpropoxy, hexyloxy, 1,1-dimethylpropoxy, 1,2-dimethylpropoxy, 1-methylpentyloxy, 2-methylpentyloxy, 3-methylpentyloxy, 4-methylpentyloxy, 1,1-dimethylbutyloxy, 1,2-dimethylbutyloxy, 1,3-dimethylbutyloxy, 2,2-dimethylbutyloxy, 2,3-dimethylbutyloxy, 3,3-dimethylbutyloxy, 1-ethylbutyloxy, 2-ethylbutyloxy, 1,1,2-trimethylpropoxy, 1,2,2-trimethylpropoxy, 1-ethyl-1-methylpropoxy and 1-ethyl-2-methylpropoxy.
Halogenated C1-C6-alkoxy is a straight-chain or branched alkoxy group having from 1 to 6, preferably from 1 to 4, in particular 1 or 2 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms, such as in halogenomethoxy, dihalogenomethoxy, trihalogenomethoxy, (R)-1-halogenoethoxy, (S)-1-halogenoethoxy, 2-halogenoethoxy, 1,1-dihalogenoethoxy, 2,2-dihalogenoethoxy, 2,2,2-trihalogenoethoxy, (R)-1-halogenopropoxy, (S)-1-halogenopropoxy, 2-halogenopropoxy, 3-halogenopropoxy, 1,1-dihalogenopropoxy, 2,2-dihalogenopropoxy, 3,3-dihalogenopropoxy, 3,3,3-trihalogenopropoxy, (R)-2-halogeno-1-methylethoxy, (S)-2-halogeno-1-methylethoxy, (R)-2,2-dihalogeno-1-methylethoxy, (S)-2,2-dihalogeno-1-methylethoxy, (R)-1,2-dihalogeno-1-methylethoxy, (S)-1,2-dihalogeno-1-methylethoxy, (R)-2,2,2-trihalogeno-1-methylethoxy, (S)-2,2,2-trihalogeno-1-methylethoxy, 2-halogeno-1-(halogenomethyl)ethoxy, 1-(dihalogenomethyl)-2,2-dihalogenoethoxy, (R)-1-halogenobutoxy, (S)-1-halogenobutoxy, 2-halogenobutoxy, 3-halogenobutoxy, 4-halogenobutoxy, 1,1-dihalogenobutoxy, 2,2-dihalogenobutoxy, 3,3-dihalogenobutoxy, 4,4-dihalogenobutoxy, 4,4,4-trihalogenobutoxy, etc. Particular examples include the fluorinated C1-C4 alkoxy groups as defined, such as trifluoromethoxy.
C1-C6-Alkylcarbonyloxy is a radical of the formula R—C(O)—O—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4, in particular 1 or 2 carbon atoms as defined herein. Examples include acetyloxy, propionyloxy, n-butyryloxy, 2-methylpropionyloxy, pivaloyloxy.
C1-C6-Hydroxyalkoxy is an alkoxy radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein, wherein one or two hydrogen atoms are replaced by hydroxy. Examples include 2-hydroxyethoxy, 3-hydroxypropoxy, 2-hydroxypropoxy, 1-methyl-2-hydroxyethoxy and the like.
C1-C6-Alkoxy-C1-C4-alkoxy is an alkoxy radical having from 1 to 4 carbon atoms, preferably 1 or 2 carbon atoms as defined herein, wherein one or two hydrogen atoms are replaced by one or two alkoxy radicals having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methoxymethoxy, 2-methoxyethoxy, 1-methoxyethoxy, 3-methoxypropoxy, 2-methoxypropoxy, 1-methyl-1-methoxyethoxy, ethoxymethoxy, 2-ethoxyethoxy, 1-ethoxyethoxy, 3-ethoxypropoxy, 2-ethoxypropoxy, 1-methyl-1-ethoxyethoxy and the like.
Amino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by an amino group. Examples include 2-aminoethoxy.
C1-C6-Alkylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by an alkylamino group having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methylaminomethoxy, ethylaminomethoxy, n-propylaminomethoxy, iso-propylaminomethoxy, n-butylaminomethoxy, 2-butylaminomethoxy, iso-butylaminomethoxy, tert-butylaminomethoxy, 2-(methylamino)ethoxy, 2-(ethylamino)ethoxy, 2-(n-propylamino)ethoxy, 2-(iso-propylamino)ethoxy, 2-(n-butylamino)ethoxy, 2-(2-butylamino)ethoxy, 2-(iso-butylamino)ethoxy, 2-(tert-butylamino)ethoxy.
Di-C1-C6-alkylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a dialkylamino group having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include dimethylaminomethoxy, diethylaminomethoxy, N-methyl-N-ethylamino)ethoxy, 2-(dimethylamino)ethoxy, 2-(diethylamino)ethoxy, 2-(N-methyl-N-ethylamino)ethoxy.
C1-C6-Alkylcarbonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by an alkylcarbonylamino group wherein the alkyl group has from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methylcarbonylaminomethoxy, ethyl-carbonylaminomethoxy, n-propylcarbonylaminomethoxy, iso-propylcarbonylaminomethoxy, n-butylcarbonylaminomethoxy, 2-butylcarbonylaminomethoxy, iso-butylcarbonylaminomethoxy, tert-butylcarbonyl-aminomethoxy, 2-(methylcarbonylamino)ethoxy, 2-(ethylcarbonylamino)ethoxy, 2-(n-propylcarbonylamino)ethoxy, 2-(iso-propylcarbonylamino)ethoxy, 2-(n-butylcarbonylamino)ethoxy, 2-(2-butylcarbonylamino)ethoxy, 2-(iso-butylcarbonyl-amino)ethoxy, 2-(tert-butylcarbonylamino)ethoxy.
C6-C12-Arylcarbonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a C6-C12-arylcarbonylamino group as defined herein. Examples include 2-(benzoylamino)ethoxy.
C1-C6-Alkoxycarbonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by an alkoxycarbonylamino group wherein the alkoxy group has from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methoxycarbonylaminomethoxy, ethoxycarbonylaminomethoxy, n-propoxycarbonylaminomethoxy, iso-propoxycarbonylaminomethoxy, n-butoxycarbonylaminomethoxy, 2-butoxycarbonylaminomethoxy, iso-buioxycarbonylaminomethoxy, tert-butoxycarbonylaminomethoxy, 2-(methoxycarbonylamino)ethoxy, 2-(ethoxycarbonyl-amino)ethoxy, 2-(n-propoxycarbonylamino)ethoxy, 2-(iso-propoxycarbonylamino)ethoxy, 2-(n-butoxycarbonylamino)ethoxy, 2-(2-butoxycarbonylamino)ethoxy, 2-(iso-butoxycarbonylamino)ethoxy, 2-(tert-butoxycarbonylamino)ethoxy.
C2-C6-Alkenyloxy is a radical of the formula R—O—, wherein R is a straight-chain or branched alkenyl group having from 2 to 6, in particular 2 to 4 carbon atoms. Examples include vinyloxy, allyloxy (2-propen-1-yloxy), 1-propen-1-yloxy, 2-propen-2-yloxy, methallyloxy (2-methylprop-2-en-1-yloxy) and the like. C3-C5-Alkenyloxy is, in particular, allyloxy, 1-methylprop-2-en-1-yloxy, 2-buten-1-yloxy, 3-buten-1-yloxy, methallyloxy, 2-penten-1-yloxy, 3-penten-1-yloxy, 4-penten-1-yloxy, 1-methylbut-2-en-1-yloxy or 2-ethylprop-2-en-1-yloxy.
C6-C12-Aryl-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a C6-C12-aryl group as defined herein. Examples include benzyloxy.
C1-C6-Alkylsulfonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by an alkylsulfonylamino group having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include 2-(methylsulfonylamino)ethoxy, 2-(ethylsulfonylamino)ethoxy, 2-[(2-methylpropyl)sulfonylamino]ethoxy.
(Halogenated C1-C6-alkyl)sulfonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by an alkylsulfonylamino group having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein, wherein the alkyl group is halogenated. Examples include 2-(trifluoromethylsulfonylamino)ethoxy.
C6-C12-Arylsulfonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a C6-C12-arylsulfonylamino group as defined herein. Examples include 2-(phenylsulfonylamino)ethoxy, 2-(naphthylsulfonylamino)ethoxy.
(C6-C12-Aryl-C1-C6-alkyl)sulfonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a (C6-C12-aryl-C1-C6-alkyl)sulfonylamino group, preferably by a (C6-C12-aryl-C1-C2-alkyl)sulfonylamino group. Examples include 2-(benzylsulfonylamino)ethoxy.
C3-C12-Heterocyclylsulfonylamino-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a C3-C12-heterocyclylsulfonylamino group as defined herein. Examples include 2-(pyridin-3-yl-sulfonylamino)ethoxy.
C3-C12-Heterocyclyl-C1-C4-alkoxy is an alkoxy radical having from 1 to 4, preferably 1 or 2 carbon atoms as defined herein, wherein one hydrogen atom is replaced by a C3-C12-heterocyclyl group as defined herein. Examples include 2-(N-pyrrolidinyl)ethoxy, 2-(N-morpholinyl)ethoxy and 2-(N-imidazolyl)ethoxy.
C1-C2-Alkylenedioxo is a radical of the formula —O—R—O—, wherein R is a straight-chain or branched alkylene group having from 1 or 2 carbon atoms as defined herein. Examples include methylenedioxo.
C6-C12-Aryloxy is a radical of the formula R—O—, wherein R is an aryl group having from 6 to 12, in particular 6 carbon atoms as defined herein. Examples include phenoxy.
C3-C12-Heterocyclyloxy is a radical of the formula R—O—, wherein R is a C3-C12-heterocyclyl group having from 3 to 12, in particular from 3 to 7 carbon atoms as defined herein. Examples include pyridin-2-yloxy.
C1-C6-Alkylthio is a radical of the formula R—S—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methylthio, ethylthio, propylthio, butylthio, pentylthio, 1-methylbutylthio, 2-methylbutylthio, 3-methylbutylthio, 2,2-dimethylpropylthio, 1-ethylpropylthio, hexylthio, 1,1-dimethylpropylthio, 1,2-dimethylpropylthio, 1-methylpentylthio, 2-methylpentylthio, 3-methylpentylthio, 4-methylpentylthio; 1,1-dimethylbutylthio, 1,2-dimethylbutylthio, 1,3-dimethylbutylthio, 2,2-dimethylbutylthio, 2,3-dimethylbutylthio, 3,3-dimethylbutylthio, 1-ethylbutylthio, 2-ethylbutylthio, 1,1,2-trimethylpropylthio, 1,2,2-trimethylpropylthio, 1-ethyl-1-methylpropyl and 1-ethyl-2-methylpropyl.
Halogenated C1-C6-alkylthio is a radical of the formula R—S—, wherein R is a halogenated alkyl radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include halogenomethylthio, dihalogenomethylthio, trihalogenomethylthio, (R)-1-halogenoethylthio, (S)-1-halogenoethylthio, 2-halogenoethylthio, 1,1-dihalogenoethylthio, 2,2-dihalogenoethylthio, 2,2,2-trihalogenoethylthio, (R)-1-halogenopropylthio, (S)-1-halogenopropylthio, 2-halogenopropylthio, 3-halogenopropylthio, 1,1-dihalogenopropylthio, 2,2-dihalogenopropylthio, 3,3-dihalogenopropylthio, 3,3,3-trihalogenopropylthio, (R)-2-halogeno-1-methylethylthio, (S)-2-halogeno-1-methylethylthio, (R)-2,2-dihalogeno-1-methylethylthio, (S)-2,2-dihalogeno-1-methylethylthio, (R)-1,2-dihalogeno-1-methylethylthio, (S)-1,2-dihalogeno-1-methylethylthio, (R)-2,2,2-trihalogeno-1-methylethylthio, (S)-2,2,2-trihalogeno-1-methylethylthio, 2-halogeno-1-(halogenomethyl)ethylthio, 1-(dihalogenomethyl)-2,2-dihalogenoethylthio, (R)-1-halogenobutylthio, (S)-1-halogenobutylthio, 2-halogenobutylthio, 3-halogenobutylthio, 4-halogenobutylthio, 1,1-dihalogenobutylthio, 2,2-dihalogenobutylthio, 3,3-dihalogenobutylthio, 4,4-dihalogenobutylthio, 4,4,4-trihalogenobutylthio, etc. Particular examples include the fluorinated C1-C4 alkylthio groups as defined, such as trifluoromethylthio.
C1-C6-Alkylsulfinyl is a radical of the formula R—S(O)—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methylsulfinyl, ethylsulfinyl, propylsulfinyl, butylsulfinyl, pentylsulfinyl, 1-methylbutylsulfinyl, 2-methylbutylsulfinyl, 3-methylbutylsulfinyl, 2,2-dimethylpropylsulfinyl, 1-ethylpropylsulfinyl, hexylsulfinyl, 1,1-dimethylpropylsulfinyl, 1,2-dimethylpropylsulfinyl, 1-methylpentylsulfinyl, 2-methylpentylsulfinyl, 3-methylpentylsulfinyl, 4-methylpentylsulfinyl, 1,1-dimethylbutylsulfinyl, 1,2-dimethylbutylsulfinyl, 1,3-dimethylbutylsulfinyl, 2,2-dimethylbutylsulfinyl, 2,3-dimethylbutylsulfinyl, 3,3-dimethylbutylsulfinyl, 1-ethylbutylsulfinyl, 2-ethylbutylsulfinyl, 1,1,2-trimethylpropylsulfinyl, 1,2,2-trimethylpropylsulfinyl, 1-ethyl-1-methylpropyl and 1-ethyl-2-methylpropyl.
C1-C6-Alkylsulfonyl is a radical of the formula R—S(O)2—, wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methylsulfonyl, ethylsulfonyl, propylsulfonyl, butylsulfonyl, pentylsulfonyl, 1-methylbutylsulfonyl, 2-methylbutylsulfonyl, 3-methylbutylsulfonyl, 2,2-dimethylpropylsulfonyl, 1-ethylpropylsulfonyl, hexylsulfonyl, 1,1-dimethylpropylsulfonyl, 1,2-dimethylpropylsulfonyl, 1-methylpentylsulfonyl, 2-methylpentylsulfonyl, 3-methylpentylsulfonyl, 4-methylpentylsulfonyl, 1,1-dimethylbutylsulfonyl, 1,2-dimethylbutylsulfonyl, 1,3-dimethylbutylsulfonyl, 2,2-dimethylbutylsulfonyl, 2,3-dimethylbutylsulfonyl, 3,3-dimethylbutylsulfonyl, 1-ethylbutylsulfonyl, 2-ethylbutylsulfonyl, 1,1,2-trimethylpropylsulfonyl, 1,2,2-trimethylpropylsulfonyl, 1-ethyl-1-methylpropyl and 1-ethyl-2-methylpropyl.
(Halogenated C1-C6-alkyl)sulfonyl is a C1-C6-alkylsulfonyl as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
C6-C12-Arylsulfonyl is a radical of the formula R—S(O)2—, wherein R is an aryl radical having from 6 to 12 carbon atoms as defined herein. Examples include phenylsulfonyl.
(C6-C12-Aryl-C1-C4-alkyl)sulfonyl is a radical of the formula R—S(O)2—, wherein R is a C6-C12-aryl-C1-C4-alkyl radical, in particular a C6-C12-aryl-C1-C2-alkyl radical as defined herein. Examples include benzylsulfonyl.
C3-C12-Heterocyclylsulfonyl is a radical of the formula R—S(O)2—, wherein R is C3-C12-heterocyclyl as defined herein.
Aminosulfonyl is NH2—S(O)2—.
C1-C6-Alkylaminosulfonyl is a radical of the formula R—NH—S(O)2— wherein R is an alkyl radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include methylaminosulfonyl, ethylaminosulfonyl, n-propylaminosulfonyl, iso-propylaminosulfonyl, n-butylaminosulfonyl, 2-butylaminosulfonyl, iso-butylaminosulfonyl, tert-butylaminosulfonyl.
Di-C1-C6-alkylaminosulfonyl is a radical of the formula RR′N—S(O)2— wherein R and R′ are independently of each other an alkyl radical having from 1 to 6, preferably from 1 to 4 carbon atoms as defined herein. Examples include dimethylaminosulfonyl, diethylaminosulfonyl, N-methyl-N-ethylaminosulfonyl.
C6-C12-Arylaminosulfonyl is a radical of the formula R—NH—S(O)2— wherein R is an aryl radical having from 6 to 12, preferably 6 carbon atoms as defined herein.
Amino is NH2.
C1-C6-Alkylamino is a radical of the formula R—NH— wherein R is an alkyl radical having from 1 to 6, in particular from 1 to 4 carbon atoms as defined herein. Examples include methylamino, ethylamino, n-propylamino, iso-propylamino, n-butylamino, 2-butylamino, iso-butylamino, tert-butylamino.
(Halogenated C1-C6-alkyl)amino is a C1-C6-alkylamino as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
Di-C1-C6-alkylamino is a radical of the formula RR′N— wherein R and R′ are independently of each other an alkyl radical having from 1 to 6, in particular from 1 to 4 carbon atoms as defined herein. Examples include dimethylamino, diethylamino, N-methyl-N-ethylamino. Di-(halogenated C1-C6-alkyl)amino is a di-C1-C6-alkylamino as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
C1-C6-Alkylcarbonylamino is a radical of the formula R—C(O)—NH—, wherein R is an alkyl radical having from 1 to 6, in particular from 1 to 4 carbon atoms as defined herein. Examples include acetamido (methylcarbonylamino), propionamido, n-butyramido, 2-methylpropionamido (isopropylcarbonylamino), 2,2-dimethylpropionamido and the like.
(Halogenated C1-C6-alkyl)carbonylamino is a C1-C6-alkylcarbonylamino as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
C6-C12-Arylcarbonylamino is a radical of the formula R—C(O)—NH—, wherein R is an aryl radical having from 6 to 12 carbon atoms as defined herein. Examples include phenylcarbonylamino.
C2-C6-Alkenylamino is a radical of the formula R—NH—, wherein R is a straight-chain or branched alkenyl group having from 2 to 6, in particular 2 to 4 carbon atoms. Examples include vinylamino, allylamino (2-propen-1-ylamino), 1-propen-1-ylamino, 2-propen-2-ylamino, methallylamino (2-methylprop-2-en-1-ylamino) and the like. C3-C5-Alkenylamino is, in particular, allylamino, 1-methylprop-2-en-1-ylamino, 2-buten-1-ylamino, 3-buten-1-ylamino, methallylamino, 2-penten-1-ylamino, 3-penten-1-ylamino, 4-penten-1-ylamino, 1-methylbut-2-en-1-ylamino or 2-ethylprop-2-en-1-ylamino.
C1-C6-Alkylsulfonylamino is a radical of the formula R—S(O)2—NH—, wherein R is an alkyl radical having from 1 to 6, in particular from 1 to 4 carbon atoms as defined herein. Examples include methylsulfonylamino, ethylsulfonylamino, n-propylsulfonylamino, iso-propylsulfonylamino, n-butylsulfonylamino, 2-butylsulfonylamino, iso-butylsulfonylamino, tert-butylsulfonylamino.
(Halogenated C1-C6 alkyl)sulfonylamino is a C1-C6-alkylsulfonylamino as defined herein, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by 1, 2, 3, 4 or a corresponding number of identical or different halogen atoms.
C6-C12-Arylsulfonylamino is a radical of the formula R—S(O)2—NH—, wherein R is an aryl radical having from 6 to 12 carbon atoms as defined herein. Examples include phenylsulfonylamino.
Nitro is —NO2.
C3-C12-Heterocyclyl is a 3- to 12-membered heterocyclic radical including a saturated heterocyclic radical, which generally has 3, 4, 5, 6, or 7 ring forming atoms (ring members), an unsaturated non-aromatic heterocyclic radical, which generally has 5, 6 or 7 ring forming atoms, and a heteroaromatic radical (hetaryl), which generally has 5, 6 or 7 ring forming atoms. The heterocylcic radicals may be bound via a carbon atom (C-bound) or a nitrogen atom (N-bound). Preferred heterocyclic radicals comprise 1 nitrogen atom as ring member atom and optionally 1, 2 or 3 further heteroatoms as ring members, which are selected, independently of each other from O, S and N. Likewise preferred heterocyclic radicals comprise 1 heteroatom as ring member, which is selected from O, S and N, and optionally 1, 2 or 3 further nitrogen atoms as ring members.
Examples of C3-C12-heterocyclyl include:
C-bound 3-4-membered, saturated rings, such as 2-oxiranyl, 2-oxetanyl, 3-oxetanyl, 2-aziridinyl, 3-thiethanyl, 1-azetidinyl, 2-azetidinyl;
C-bound, 5-membered, saturated rings, such as tetrahydrofuran-2-yl, tetrahydrofuran-3-yl, tetrahydrothien-2-yl, tetrahydrothien-3-yl, tetrahydropyrrol-2-yl, tetrahydropyrrol-3-yl, tetrahydropyrazol-3-yl, tetrahydro-pyrazol-4-yl, tetrahydroisoxazol-3-yl, tetrahydroisoxazol-4-yl, tetrahydroisoxazol-5-yl, 1,2-oxathiolan-3-yl, 1,2-oxathiolan-4-yl, 1,2-oxathiolan-5-yl, tetrahydroisothiazol-3-yl, tetrahydroisothiazol-4-yl, tetrahydroisothiazol-5-yl, 1,2-dithiolan-3-yl, 1,2-dithiolan-4-yl, tetrahydroimidazol-2-yl, tetrahydroimidazol-4-yl, tetrahydrooxazol-2-yl, tetrahydrooxazol-4-yl, tetrahydrooxazol-5-yl, tetrahydrothiazol-2-yl, tetrahydrothiazol-4-yl, tetrahydrothiazol-5-yl, 1,3-dioxolan-2-yl, 1,3-dioxolan-4-yl, 1,3-oxathiolan-2-yl, 1,3-oxathiolan-4-yl, 1,3-oxathiolan-5-yl, 1,3-dithiolan-2-yl, 1,3-dithiolan-4-yl, 1,3,2-dioxathiolan-4-yl;
C-bound, 6-membered, saturated rings, such as tetrahydropyran-2-yl, tetrahydropyran-3-yl, tetrahydropyran-4-yl, piperidin-2-yl, piperidin-3-yl, piperidin-4-yl, tetrahydrothiopyran-2-yl, tetrahydrothiopyran-3-yl, tetrahydrothiopyran-4-yl, 1,3-dioxan-2-yl, 1,3-dioxan-4-yl, 1,3-dioxan-5-yl, 1,4-dioxan-2-yl, 1,3-dithian-2-yl, 1,3-dithian-4-yl, 1,3-dithian-5-yl, 1,4-dithian-2-yl, 1,3-oxathian-2-yl, 1,3-oxathian-4-yl, 1,3-oxathian-5-yl, 1,3-oxathian-6-yl, 1,4-oxathian-2-yl, 1,4-oxathian-3-yl, 1,2-dithian-3-yl, 1,2-dithian-4-yl, hexahydropyrimidin-2-yl, hexahydropyrimidin-4-yl, hexahydropyrimidin-5-yl, hexahydropyrazin-2-yl, hexahydropyridazin-3-yl, hexahydropyridazin-4-yl, tetrahydro-1,3-oxazin-2-yl, tetrahydro-1,3-oxazin-4-yl, tetrahydro-1,3-oxazin-5-yl, tetrahydro-1,3-oxazin-6-yl, tetrahydro-1,3-thiazin-2-yl, tetrahydro-1,3-thiazin-4-yl, tetrahydro-1,3-thiazin-5-yl, tetrahydro-1,3-thiazin-6-yl, tetrahydro-1,4-thiazin-2-yl, tetrahydro-1,4-thiazin-3-yl, tetrahydro-1,4-oxazin-2-yl, tetrahydro-1,4-oxazin-3-yl, tetrahydro-1,2-oxazin-3-yl, tetrahydro-1,2-oxazin-4-yl, tetrahydro-1,2-oxazin-5-yl, tetrahydro-1,2-oxazin-6-yl;
N-bound, 5-membered, saturated rings, such as tetrahydropyrrol-1-yl (pyrrolidin-1-yl), tetrahydropyrazol-1-yl, tetrahydroisoxazol-2-yl, tetrahydroisothiazol-2-yl, tetrahydroimidazol-1-yl, tetrahydrooxazol-3-yl, tetrahydrothiazol-3-yl;
N-bound, 6-membered, saturated rings, such as piperidin-1-yl, hexahydropyrimidin-1-yl, hexahydropyrazin-1-yl(piperazin-1-yl), hexahydropyridazin-1-yl, tetrahydro-1,3-oxazin-3-yl, tetrahydro-1,3-thiazin-3-yl, tetrahydro-1,4-thiazin-4-yl, tetrahydro-1,4-oxazin-4-yl(morpholin-1-yl), tetrahydro-1,2-oxazin-2-yl;
C-bound, 5-membered, partially unsaturated rings, such as 2,3-dihydrofuran-2-yl, 2,3-dihydrofuran-3-yl, 2,5-dihydrofuran-2-yl, 2,5-di-hydrofuran-3-yl, 4,5-dihydrofuran-2-yl, 4,5-dihydrofuran-3-yl, 2,3-dihydro-thien-2-yl, 2,3-dihydrothien-3-yl, 2,5-dihydrothien-2-yl, 2,5-dihydrothien-3-yl, 4,5-dihydrothien-2-yl, 4,5-dihydrothien-3-yl, 2,3-dihydro-1H-pyrrol-2-yl, 2,3-dihydro-1H-pyrrol-3-yl, 2,5-dihydro-1H-pyrrol-2-yl, 2,5-dihydro-1H-pyrrol-3-yl, 4,5-dihydro-1H-pyrrol-2-yl, 4,5-dihydro-1H-pyrrol-3-yl, 3,4-dihydro-2H-pyrrol-2-yl, 3,4-dihydro-2H-pyrrol-3-yl, 3,4-dihydro-5H-pyrrol-2-yl, 3,4-dihydro-5H-pyrrol-3-yl, 4,5-dihydro-1H-pyrazol-3-yl, 4,5-dihydro-1H-pyrazol-4-yl, 4,5-dihydro-1H-pyrazol-5-yl, 2,5-dihydro-1H-pyrazol-3-yl, 2,5-dihydro-1H-pyrazol-4-yl, 2,5-dihydro-1H-pyrazol-5-yl, 4,5-dihydroisoxazol-3-yl, 4,5-dihydroisoxazol-4-yl, 4,5-dihydroisoxazol-5-yl, 2,5-dihydroisoxazol-3-yl, 2,5-dihydroisoxazol-4-yl, 2,5-dihydroisoxazol-5-yl, 2,3-dihydroisoxazol-3-yl, 2,3-dihydroisoxazol-4-yl, 2,3-dihydroisoxazol-5-yl, 4,5-dihydroisothiazol-3-yl, 4,5-dihydroisothiazol-4-yl, 4,5-dihydroisothiazol-5-yl, 2,5-dihydroisothiazol-3-yl, 2,5-dihydroisothiazol-4-yl, 2,5-dihydroisothiazol-5-yl, 2,3-dihydroisothiazol-3-yl, 2,3-dihydroisothiazol-4-yl, 2,3-dihydroisothiazol-5-yl, 4,5-dihydro-1H-imidazol-2-yl, 4,5-dihydro-1H-imidazol-4-yl, 4,5-dihydro-1H-imidazol-5-yl, 2,5-dihydro-1H-imidazol-2-yl, 2,5-dihydro-1H-imidazol-4-yl, 2,5-dihydro-1H-imidazol-5-yl, 2,3-dihydro-1H-imidazol-2-yl, 2,3-dihydro-1H-imidazol-4-yl, 4,5-dihydro-oxazol-2-yl, 4,5-dihydrooxazol-4-yl, 4,5-dihydrooxazol-5-yl, 2,5-dihydrooxazol-2-yl, 2,5-dihydrooxazol-4-yl, 2,5-dihydrooxazol-5-yl, 2,3-dihydrooxazol-2-yl, 2,3-dihydrooxazol-4-yl, 2,3-dihydrooxazol-5-yl, 4,5-dihydrothiazol-2-yl, 4,5-dihydrothiazol-4-yl, 4,5-dihydrothiazol-5-yl, 2,5-dihydrothiazol-2-yl, 2,5-dihydrothiazol-4-yl, 2,5-dihydrothiazol-5-yl, 2,3-dihydrothiazol-2-yl, 2,3-dihydrothiazol-4-yl, 2,3-dihydrothiazol-5-yl, 1,3-dioxol-2-yl, 1,3-dioxol-4-yl, 1,3-dithiol-2-yl, 1,3-dithiol-4-yl, 1,3-oxathiol-2-yl, 1,3-oxathiol-4-yl, 1,3-oxathiol-5-yl;
C-bound, 6-membered, partially unsaturated rings, such as 2H-3,4-dihydropyran-6-yl, 2H-3,4-dihydropyran-5-yl, 2H-3,4-dihydropyran-4-yl, 2H-3,4-dihydropyran-3-yl, 2H-3,4-dihydropyran-2-yl, 2H-3,4-dihydrothiopyran-6-yl, 2H-3,4-dihydrothiopyran-5-yl, 2H-3,4-dihydrothiopyran-4-yl, 2H-3,4-dihydrothiopyran-3-yl, 2H-3,4-dihydrothiopyran-2-yl, 1,2,3,4-tetrahydropyridin-6-yl, 1,2,3,4-tetrahydropyridin-5-yl, 1,2,3,4-tetrahydropyridin-4-yl, 1,2,3,4-tetra-hydropyridin-3-yl, 1,2,3,4-tetrahydropyridin-2-yl, 2H-5,6-dihydropyran-2-yl, 2H-5,6-dihydropyran-3-yl, 2H-5,6-dihydropyran-4-yl, 2H-5,6-dihydropyran-5-yl, 2H-5,6-dihydropyran-6-yl, 2H-5,6-dihydrothiopyran-2-yl, 2H-5,6-dihydrothiopyran-3-yl, 2H-5,6-dihydrothiopyran-4-yl, 2H-5,6-dihydrothiopyran-5-yl, 2H-5,6-dihydrothiopyran-6-yl, 1,2,5,6-tetrahydropyridin-2-yl, 1,2,5,6-tetrahydropyridin-3-yl, 1,2,5,6-tetrahydropyridin-4-yl, 1,2,5,6-tetrahydropyridin-5-yl, 1,2,5,6-tetrahydropyridin-6-yl, 2,3,4,5-tetrahydropyridin-2-yl, 2,3,4,5-tetrahydropyridin-3-yl, 2,3,4,5-tetrahydropyridin-4-yl, 2,3,4,5-tetrahydropyridin-5-yl, 2,3,4,5-tetrahydropyridin-6-yl, 4H-pyran-2-yl, 4H-pyran-3-yl-, 4H-pyran-4-yl, 4H-thiopyran-2-yl, 4H-thiopyran-3-yl, 4H-thiopyran-4-yl, 1,4-dihydropyridin-2-yl, 1,4-dihydropyridin-3-yl, 1,4-dihydropyridin-4-yl, 2H-pyran-2-yl, 2H-pyran-3-yl, 2H-pyran-4-yl, 2H-pyran-5-yl, 2H-pyran-6-yl, 2H-thiopyran-2-yl, 2H-thiopyran-3-yl, 2H-thiopyran-4-yl, 2H-thiopyran-5-yl, 2H-thiopyran-6-yl, 1,2-dihydropyridin-2-yl, 1,2-dihydro-pyridin-3-yl, 1,2-dihydropyridin-4-yl, 1,2-dihydropyridin-5-yl, 1,2-dihydro-pyridin-6-yl, 3,4-dihydropyridin-2-yl, 3,4-dihydropyridin-3-yl, 3,4-dihydro-pyridin-4-yl, 3,4-dihydropyridin-5-yl, 3,4-dihydropyridin-6-yl, 2,5-dihydropyridin-2-yl, 2,5-dihydropyridin-3-yl, 2,5-dihydropyridin-4-yl, 2,5-dihydropyridin-5-yl, 2,5-dihydropyridin-6-yl, 2,3-dihydropyridin-2-yl, 2,3-dihydropyridin-3-yl, 2,3-dihydropyridin-4-yl, 2,3-dihydropyridin-5-yl, 2,3-dihydropyridin-6-yl, 2H-5,6-dihydro-1,2-oxazin-3-yl, 2H-5,6-dihydro-1,2-oxazin-4-yl, 2H-5,6-dihydro-1,2-oxazin-5-yl, 2H-5,6-dihydro-1,2-oxazin-6-yl, 2H-5,6-dihydro-1,2-thiazin-3-yl, 2H-5,6-dihydro-1,2-thiazin-4-yl, 2H-5,6-dihydro-1,2-thiazin-5-yl, 2H-5,6-dihydro-1,2-thiazin-6-yl, 4H-5,6-dihydro-1,2-oxazin-3-yl, 4H-5,6-dihydro-1,2-oxazin-4-yl, 4H-5,6-dihydro-1,2-oxazin-5-yl, 4H-5,6-dihydro-1,2-oxazin-6-yl, 4H-5,6-dihydro-1,2-thiazin-3-yl, 4H-5,6-dihydro-1,2-thiazin-4-yl, 4H-5,6-dihydro-1,2-thiazin-5-yl, 4H-5,6-dihydro-1,2-thiazin-6-yl, 2H-3,6-dihydro-1,2-oxazin-3-yl, 2H-3,6-dihydro-1,2-oxazin-4-yl, 2H-3,6-dihydro-1,2-oxazin-5-yl, 2H-3,6-dihydro-1,2-oxazin-6-yl, 2H-3,6-dihydro-1,2-thiazin-3-yl, 2H-3,6-dihydro-1,2-thiazin-4-yl, 2H-3,6-dihydro-1,2-thiazin-5-yl, 2H-3,6-dihydro-1,2-thiazin-6-yl, 2H-3,4-dihydro-1,2-oxazin-3-yl, 2H-3,4-dihydro-1,2-oxazin-4-yl, 2H-3,4-dihydro-1,2-oxazin-5-yl, 2H-3,4-dihydro-1,2-oxazin-6-yl, 2H-3,4-dihydro-1,2-thiazin-3-yl, 2H-3,4-dihydro-1,2-thiazin-4-yl, 2H-3,4-dihydro-1,2-thiazin-5-yl, 2H-3,4-dihydro-1,2-thiazin-6-yl, 2,3,4,5-tetrahydropyridazin-3-yl, 2,3,4,5-tetrahydropyridazin-4-yl, 2,3,4,5-tetrahydropyridazin-5-yl, 2,3,4,5-tetrahydropyridazin-6-yl, 3,4,5,6-tetrahydropyridazin-3-yl, 3,4,5,6-tetrahydropyridazin-4-yl, 1,2,5,6-tetrahydropyridazin-3-yl, 1,2,5,6-tetrahydropyridazin-4-yl, 1,2,5,6-tetra-hydropyridazin-5-yl, 1,2,5,6-tetrahydropyridazin-6-yl, 1,2,3,6-tetrahydro-pyridazin-3-yl, 1,2,3,6-tetrahydropyridazin-4-yl, 4H-5,6-dihydro-1,3-oxazin-2-yl, 4H-5,6-dihydro-1,3-oxazin-4-yl, 4H-5,6-dihydro-1,3-oxazin-5-yl, 4H-5,6-dihydro-1,3-oxazin-6-yl, 4H-5,6-dihydro-1,3-thiazin-2-yl, 4H-5,6-dihydro-1,3-thiazin-4-yl, 4H-5,6-dihydro-1,3-thiazin-5-yl, 4H-5,6-dihydro-1,3-thiazin-6-yl, 3,4,5-6-tetrahydropyrimidin-2-yl, 3,4,5,6-tetrahydropyrimidin-4-yl, 3,4,5,6-tetrahydropyrimidin-5-yl, 3,4,5,6-tetrahydropyrimidin-6-yl, 1,2,3,4-tetrahydropyrazin-2-yl, 1,2,3,4-tetrahydropyrazin-5-yl, 1,2,3,4-tetrahydro-pyrimidin-2-yl, 1,2,3,4-tetrahydropyrimidin-4-yl, 1,2,3,4-tetrahydropyrimidin-5-yl, 1,2,3,4-tetrahydropyrimidin-6-yl, 2,3-dihydro-1,4-thiazin-2-yl, 2,3-dihydro-1,4-thiazin-3-yl, 2,3-dihydro-1,4-thiazin-5-yl, 2,3-dihydro-1,4-thiazin-6-yl, 2H-1,3-oxazin-2-yl, 2H-1,3-oxazin-4-yl, 2H-1,3-oxazin-5-yl, 2H-1,3-oxazin-6-yl, 2H-1,3-thiazin-2-yl, 2H-1,3-thiazin-4-yl, 2H-1,3-thiazin-5-yl, 2H-1,3-thiazin-6-yl, 4H-1,3-oxazin-2-yl, 4H-1,3-oxazin-4-yl, 4H-1,3-oxazin-5-yl, 4H-1,3-oxazin-6-yl, 4H-1,3-thiazin-2-yl, 4H-1,3-thiazin-4-yl, 4H-1,3-thiazin-5-yl, 4H-1,3-thiazin-6-yl, 6H-1,3-oxazin-2-yl, 6H-1,3-oxazin-4-yl, 6H-1,3-oxazin-5-yl, 6H-1,3-oxazin-6-yl, 6H-1,3-thiazin-2-yl, 6H-1,3-oxazin-4-yl, 6H-1,3-oxazin-5-yl, 6H-1,3-thiazin-6-yl, 2H-1,4-oxazin-2-yl, 2H-1,4-oxazin-3-yl, 2H-1,4-oxazin-5-yl, 2H-1,4-oxazin-6-yl, 2H-1,4-thiazin-2-yl, 2H-1,4-thiazin-3-yl, 2H-1,4-thiazin-5-yl, 2H-1,4-thiazin-6-yl, 4H-1,4-oxazin-2-yl, 4H-1,4-oxazin-3-yl, 4H-1,4-thiazin-2-yl, 4H-1,4-thiazin-3-yl, 1,4-dihydropyridazin-3-yl, 1,4-dihydropyridazin-4-yl, 1,4-dihydropyridazin-5-yl, 1,4-dihydropyridazin-6-yl, 1,4-dihydropyrazin-2-yl, 1,2-dihydropyrazin-2-yl, 1,2-dihydropyrazin-3-yl, 1,2-dihydropyrazin-5-yl, 1,2-dihydropyrazin-6-yl, 1,4-dihydropyrimidin-2-yl, 1,4-dihydropyrimidin-4-yl, 1,4-dihydropyrimidin-5-yl, 1,4-dihydropyrimidin-6-yl, 3,4-dihydropyrimidin-2-yl, 3,4-dihydropyrimidin-4-yl, 3,4-dihydropyrimidin-5-yl or 3,4-dihydropyrimidin-6-yl;
N-bound, 5-membered, partially unsaturated rings, such as 2,3-dihydro-1H-pyrrol-1-yl, 2,5-dihydro-1H-pyrrol-1-yl, 4,5-dihydro-1H-pyrazol-1-yl, 2,5-dihydro-1H-pyrazol-1-yl, 2,3-dihydro-1H-pyrazol-1-yl, 2,5-dihydroisoxazol-2-yl, 2,3-dihydroisoxazol-2-yl, 2,5-dihydroisothiazol-2-yl, 2,3-dihydroisoxazol-2-yl, 4,5-dihydro-1H-imidazol-1-yl, 2,5-dihydro-1H-imidazol-1-yl, 2,3-dihydro-1H-imidazol-1-yl, 2,3-dihydrooxazol-3-yl, 2,3-dihydrothiazol-3-yl;
N-bound, 6-membered, partially unsaturated rings, such as 1,2,3,4-tetrahydropyridin-1-yl, 1,2,5,6-tetrahydropyridin-1-yl, 1,4-dihydro-pyridin-1-yl, 1,2-dihydropyridin-1-yl, 2H-5,6-dihydro-1,2-oxazin-2-yl, 2H-5,6-dihydro-1,2-thiazin-2-yl, 2H-3,6-dihydro-1,2-oxazin-2-yl, 2H-3,6-dihydro-1,2-thiazin-2-yl, 2H-3,4-dihydro-1,2-oxazin-2-yl, 2H-3,4-dihydro-1,2-thiazin-2-yl, 2,3,4,5-tetrahydropyridazin-2-yl, 1,2,5,6-tetrahydropyridazin-1-yl, 1,2,5,6-tetrahydropyridazin-2-yl, 1,2,3,6-tetrahydropyridazin-1-yl, 3,4,5,6-tetrahydropyrimidin-3-yl, 1,2,3,4-tetrahydropyrazin-1-yl, 1,2,3,4-tetrahydropyrimidin-1-yl, 1,2,3,4-tetrahydropyrimidin-3-yl, 2,3-dihydro-1,4-thiazin-4-yl, 2H-1,2-oxazin-2-yl, 2H-1,2-thiazin-2-yl, 4H-1,4-oxazin-4-yl, 4H-1,4-thiazin-4-yl, 1,4-dihydropyridazin-1-yl, 1,4-dihydropyrazin-1-yl, 1,2-dihydropyrazin-1-yl, 1,4-dihydropyrimidin-1-yl or 3,4-dihydropyrimidin-3-yl;
C-bound, 5-membered, heteroaromatic rings, such as 2-furyl, 3-furyl, 2-thienyl, 3-thienyl, pyrrol-2-yl, pyrrol-3-yl, pyrazol-3-yl, pyrazol-4-yl, isoxazol-3-yl, isoxazol-4-yl, isoxazol-5-yl, isothiazol-3-yl, isothiazol-4-yl, isothiazol-5-yl, imidazol-2-yl, imidazol-4-yl, oxazol-2-yl, oxazol-4-yl, oxazol-5-yl, thiazol-2-yl, thiazol-4-yl, thiazol-5-yl, 1,2,3-oxadiazol-5-yl, 1,2,4-oxadiazol-3-yl, 1,2,4,-oxadiazol-5-yl, 1,3,4-oxadiazol-2-yl, 1,2,3-thiadiazol-4-yl, 1,2,3-thiadiazol-5-yl, 1,2,4-thiadiazol-3-yl, 1,2,4-thiadiazol-5-yl, 1,3,4-thiadiazolyl-2-yl, 1,2,3-triazol-4-yl, 1,2,4-triazol-3-yl, tetrazol-5-yl;
C-bound, 6-membered, heteroaromatic rings, such as pyridin-2-yl, pyridin-3-yl, pyridin-4-yl (4-pyridyl), pyridazin-3-yl, pyridazin-4-yl, pyrimidin-2-yl, pyrimidin-4-yl, pyrimidin-5-yl, pyrazin-2-yl, 1,3,5-triazin-2-yl, 1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl, 1,2,4-triazin-6-yl, 1,2,4,5-tetrazin-3-yl;
N-bound, 5-membered, heteroaromatic rings, such as pyrrol-1-yl, pyrazol-1-yl, imidazol-1-yl, 1,2,3-triazol-1-yl, 1,2,4-triazol-1-yl, tetrazol-1-yl.
Heterocyclyl also includes bicyclic heterocycles, which comprise one of the described 5- or 6-membered heterocyclic rings and a further anellated, saturated or unsaturated or aromatic carbocycle, such as a benzene, cyclohexane, cyclohexene or cyclohexadiene ring, or a further anellated 5- or 6-membered heterocyclic ring, this heterocyclic ring being saturated or unsaturated or aromatic. These include quinolinyl, isoquinolinyl, indolyl, indolizinyl, isoindolyl, indazolyl, benzofuryl, benzthienyl, benzo[b]thiazolyl, benzoxazolyl, benzthiazolyl and benzimidazolyl. Examples of 5- or 6-membered heteroaromatic compounds comprising an anellated cycloalkenyl ring include dihydroindolyl, dihydroindolizinyl, dihydroisoindolyl, dihydrochinolinyl, dihydroisoquinolinyl, chromenyl and chromanyl.
C3-C12-Heteroarylene is a heteroaryl diradical. Examples include pyrid-2,5-ylene and pyrid-2,4-ylene. A further example is pyrid-2,3-ylene.
With respect to compounds' capability of inhibiting glycine transporter 1, the variables R, R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 preferably have the following meanings which, when taken alone or in combination, represent particular embodiments of the tetrahydroisoquinolines of the formula (I):
In said formula (I), there may be one or more than one substituent R, R2 and/or R3. More particularly, there may be up to 3 substituents R2, and up to 5 substituents R3. Preferably there is one substituent R and 1, 2 or 3 substituents R2. Formula (I) may thus be depicted as follows:
wherein a is 1, 2 or 3, b is 1, 2, 3, 4 or 5 and c is 1. If there is more than one radical R2, these may be the same or different radicals. If there is more than one radical R3, these may be the same or different radicals.
According to one embodiment, R is cyano.
Preferably, R is R1—W-A1-Q-Y-A2-X—, wherein R1, W, A1, Q, Y, A2, X are as defined herein.
R1 is hydrogen, C1-C6-alkyl (e.g. methyl, n-propyl, isopropyl, n-butyl, isobutyl or 2,2-dimethylpropyl), halogenated C1-C6-alkyl (e.g. trifluormethyl, a further example being 3-fluoropropyl or 3,3,3-trifluoropropyl), hydroxy-C1-C4-alkyl (e.g. 2-hydroxyethyl or 2-hydroxy-2-methylpropyl), C1-C6-alkoxy-C1-C4-alkyl (e.g. methoxyethyl), amino-C1-C4-alkyl (e.g. aminoethyl, a further example being 3-amino-n-propyl or 4-amino-n-butyl), C1-C6-alkylamino-C1-C4-alkyl (e.g. ethylamino-n-propyl, n-propylamino-n-propyl or isopropylamino-n-propyl, a further example being isopropylaminoethyl or methylamino-n-propyl), di-C1-C6-alkylamino-C1-C4-alkyl (e.g. dimethylamino-n-propyl or diethylamino-n-propyl, a further example being dimethylaminoethyl), C1-C6-alkylcarbonylamino-C1-C4-alkyl, C1-C6-alkyloxycarbonylamino-C1-C4-alkyl (e.g. t-butoxycarbonylaminoethyl), C1-C6-alkylaminocarbonylamino-C1-C4-alkyl (e.g. n-propylaminocarbonylaminoethyl), di-C1-C6-alkylaminocarbonylamino-C1-C4-alkyl, C1-C6-alkylsulfonylamino-C1-C4-alkyl, (C6-C12-aryl-C1-C6-alkyl)amino-C1-C4 alkyl, optionally substituted C6-C12-aryl-C1-C4-alkyl (e.g. benzyl), optionally substituted C3-C12-heterocyclyl-C1-C4-alkyl (e.g. 2-(1-piperidinyl)ethyl), C3-C12-cycloalkyl (e.g. cyclopropyl), C1-C6-alkylcarbonyl, C1-C6-alkoxycarbonyl (e.g. tert-butyloxycarbonyl), halogenated C1-C6-alkoxycarbonyl, C6-C12-aryloxycarbonyl, aminocarbonyl, C1-C6-alkylaminocarbonyl (e.g. ethylaminocarbonyl), (halogenated C1-C4-alkyl)aminocarbonyl, C6-C12-arylaminocarbonyl, C2-C6-alkenyl (e.g. prop-1-en-1-yl), C2-C6-alkynyl, optionally substituted C6-C12-aryl (e.g. phenyl, naphthyl, 2-CN-phenyl, 3-CN-phenyl, 2-Cl-phenyl, 3-Cl-phenyl, 4-Cl-phenyl, 2,4-di-Cl-phenyl, 2-MeO-phenyl, 3-MeO-phenyl or 4-MeO-phenyl, a further example being 4-(2-fluoroethyl)-phenyl, 3-NH2-phenyl, 4-NH2-phenyl or 4-aminocarbonylamino-phenyl), hydroxy, C1-C6-alkoxy, halogenated C1-C6-alkoxy, C1-C6-hydroxyalkoxy, C1-C6-alkoxy-C1-C4-alkoxy, amino-C1-C4 alkoxy, C1-C6-alkylamino-C1-C4-alkoxy, di-C1-C6-alkylamino-C1-C4-alkoxy, C1-C6-alkylcarbonylamino-C1-C6-alkoxy, C6-C12-arylcarbonylamino-C1-C4-alkoxy, C1-C6-alkoxycarbonylamino-C1-C4-alkoxy, C6-C12-aryl-C1-C4-alkoxy, C1-C6-alkylsulfonylamino-C1-C4-alkoxy, (halogenated C1-C6-alkyl)sulfonylamino-C1-C4-alkoxy, C6-C12-arylsulfonylamino-C1-C4-alkoxy, (C6-C12-aryl-C1-C6-alkyl)sulfonylamino-C1-C4-alkoxy, C3-C12-heterocyclylsulfonylamino-C1-C4-alkoxy, C3-C12-heterocyclyl-C1-C4-alkoxy, C6-C12-aryloxy, C3-C12-heterocyclyloxy, C1-C6-alkylthio, halogenated C1-C6-alkylthio, C1-C6-alkylamino (e.g. isopropylamino or t-butylamino), (halogenated C1-C6alkyl)amino, di-C1-C6-alkylamino (e.g. diethylamino, a further example being dimethylamino), di-(halogenated C1-C6-alkyl)amino, C1-C6alkylcarbonylamino, (halogenated C1-C6-alkyl)carbonylamino, C6-C12-arylcarbonylamino, C1-C6-alkylsulfonylamino, (halogenated C1-C6 alkyl)sulfonylamino, C6-C12-arylsulfonylamino or optionally substituted C3-C12-heterocyclyl (e.g. 3-pyridyl, 6-chloro-3-pyridyl, 6-amino-3-pyridyl, 6-propylamino-3-pyridyl, 6-benzylamino-3-pyridyl, 2-thienyl, 5-(3-isoxazolyl)-2-thienyl, 1-methyl-1,2-diazol-4-yl, 1,3-dimethyl-1,2-diazol-4-yl, 1,3-diazol-4-yl, 1-methyl-1,3-diazol-4-yl, 1,2-dimethyl-1,3-diazol-4-yl, 8-quinolinyl, piperidin-1-yl, piperidin-3-yl, 1,4-piperazinyl, 1-ethoxycarbonyl-1,4-piperazinyl, 1-t-butoxycarbonyl-1,4-piperazinyl, 1-propyl-1,4-piperazinyl, 1-propylsulfonyl-1,4-piperazinyl, morpholinyl, 1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl or 6-chloro-imidazo[2,1-b][1,3]thiazole-5-yl, a further example being 3-azetidinyl, 1-methylcarbonyl-azetidin-3-yl, 3-pyrrolidinyl, 1-benzyloxycarbonylpyrrolidin-3-yl, 1,2-diazol-4-yl, 1,2,4-triazol-5-yl, 3-amino-1,2,4-triazol-5-yl, 5-methyl-1,2-oxazol-4-yl, 2-amino-1,3-thiazol-5-yl, 2-acetylamino-1,3-thiazol-5-yl, 5-methylamino-1,3,4-thiadiazol-2-yl, 4-methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl, 2-pyridyl, 6-methoxy-3-pyridyl, 3-phenoxy-3-pyridyl, 6-amino-3-pyridyl, 6-morpholin-4-yl-3-pyridyl, 2-amino-1,3-pyrimidin-5-yl, 4-piperidinyl or 1-benzyl-piperidin-4-yl). Further, R1 may also be halogenated C1-C6-alkylcarbonyl or C1-C6-alkylcarbonyloxy.
Preferably, R1 is C1-C6-alkyl (e.g. methyl, n-propyl, isopropyl, n-butyl, isobutyl or 2,2-dimethylpropyl), halogenated C1-C6-alkyl (e.g. trifluormethyl, a further example being 3-fluoropropyl or 3,3,3-trifluoropropyl), hydroxy-C1-C4-alkyl (e.g. 2-hydroxyethyl or 2-hydroxy-2-methylpropyl), C1-C6-alkoxy-C1-C4-alkyl (e.g. methoxyethyl), amino-C1-C4-alkyl (e.g. aminoethyl, a further example being 3-amino-n-propyl or 4-amino-n-butyl), C1-C6-alkylamino-C1-C4-alkyl (e.g. ethylamino-n-propyl, n-propylamino-n-propyl or isopropylamino-n-propyl, a further example being isopropylaminoethyl or methylamino-n-propyl), di-C1-C6-alkylamino-C1-C4-alkyl (e.g. dimethylamino-n-propyl or diethylamino-n-propyl, a further example being dimethylaminoethyl), C1-C6-alkylcarbonylamino-C1-C4-alkyl, C1-C6-alkyloxycarbonylamino-C1-C4-alkyl (e.g. t-butoxycarbonylaminoethyl), C1-C6-alkylaminocarbonylamino-C1-C4-alkyl (e.g. n-propylaminocarbonylaminoethyl), di-C1-C6-alkylaminocarbonylamino-C1-C4-alkyl, C6-C12-aryl-C1-C4-alkyl (e.g. benzyl), C3-C12-heterocyclyl-C1-C4-alkyl (e.g. 2-(1-piperidinyl)ethyl), C3-C12-cycloalkyl (e.g. cyclopropyl), optionally substituted C6-C12-aryl (e.g. phenyl, naphthyl, 2-CN-phenyl, 3-CN-phenyl, 2-Cl-phenyl, 3-Cl-phenyl, 4-Cl-phenyl, 2,4-di-Cl-phenyl, 2-MeO-phenyl, 3-MeO-phenyl or 4-MeO-phenyl, a further example being 4-(2-fluoroethyl)-phenyl, 3-NH2-phenyl, 4-NH2-phenyl or 4-aminocarbonylamino-phenyl), hydroxy, C1-C6-alkylamino (e.g. isopropylamino or t-butylamino), (halogenated C1-C6-alkyl)amino, di-C1-C6alkylamino (e.g. diethylamino, a further example being dimethylamino), di-(halogenated C1-C6-alkyl)amino, C1-C6-alkylcarbonylamino, (halogenated C1-C6alkyl)carbonylamino, C6-C12-arylcarbonylamino, C1-C6-alkylsulfonylamino, (halogenated C1-C6 alkyl)sulfonylamino, C6-C12-arylsulfonylamino or optionally substituted C3-C12-heterocyclyl (e.g. 3-pyridyl, 6-chloro-3-pyridyl, 6-amino-3-pyridyl, 6-propylamino-3-pyridyl, 6-benzylamino-3-pyridyl, 2-thienyl, 5-(3-isoxazolyl)-2-thienyl, 1-methyl-1,2-diazol-4-yl, 1,3-dimethyl-1,2-diazol-4-yl, 1,3-diazol-4-yl, 1-methyl-1,3-diazol-4-yl, 1,2-dimethyl-1,3-diazol-4-yl, 8-quinolinyl, piperidin-1-yl, piperidin-3-yl, 1,4-piperazinyl, 1-ethoxycarbonyl-1,4-piperazinyl, 1-t-butoxycarbonyl-1,4-piperazinyl, 1-propyl-1,4-piperazinyl, 1-propylsulfonyl-1,4-piperazinyl, morpholinyl, 1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl or 6-chloro-imidazo[2,1-b][1,3]thiazole-5-yl, a further example being 3-azetidinyl, 1-methylcarbonyl-azetidin-3-yl, 3-pyrrolidinyl, 1-benzyloxycarbonylpyrrolidin-3-yl, 1,2-diazol-4-yl, 1,2,4-triazol-5-yl, 3-amino-1,2,4-triazol-5-yl, 5-methyl-1,2-oxazol-4-yl, 2-amino-1,3-thiazol-5-yl, 2-acetylamino-1,3-thiazol-5-yl, 5-methylamino-1,3,4-thiadiazol-2-yl, 4-methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl, 2-pyridyl, 6-methoxy-3-pyridyl, 3-phenoxy-3-pyridyl, 6-amino-3-pyridyl, 6-morpholin-4-yl-3-pyridyl, 2-amino-1,3-pyrimidin-5-yl, 4-piperidinyl or 1-benzyl-piperidin-4-yl). It is further preferred if R1 is C1-Cs-alkoxycarbonyl (e.g. tert-butyloxycarbonyl), C1-C6-alkylaminocarbonyl (e.g. ethylaminocarbonyl) or C2-Cs-alkenyl (e.g. prop-1-en-1-yl).
In particular, R1 is hydrogen, C1-C6-alkyl (e.g. methyl, n-propyl, isopropyl, n-butyl, isobutyl or 2,2-dimethylpropyl), halogenated C1-C6-alkyl (e.g. trifluormethyl, a further example being 3-fluoropropyl or 3,3,3-trifluoropropyl), C1-C6-alkoxy-C1-C4-alkyl (e.g. methoxyethyl, amino-C1-Ca-alkyl (e.g. aminoethyl, a further example being 3-amino-n-propyl or 4-amino-n-butyl), C1-C6-alkylamino-C1-C4-alkyl (e.g. ethylamino-n-propyl, n-propylamino-n-propyl or isopropylamino-n-propyl, a further example being isopropylaminoethyl or methylamino-n-propyl), di-C1-C6-alkylamino-C1-C4-alkyl (e.g. dimethylamino-n-propyl or diethylamino-n-propyl, a further example being dimethylaminoethyl), C1-C6-alkyloxycarbonylamino-C1-C4-alkyl (e.g. t-butoxycarbonylaminoethyl), C1-C6-alkylaminocarbonylamino-C1-C4-alkyl (e.g. n-propylaminocarbonylaminoethyl), C6-C12-aryl-C1-C4-alkyl (e.g. benzyl), C3-C12-heterocyclyl-C1-C4-alkyl (e.g. 2-(1-piperidinyl)ethyl), C3-C12-cycloalkyl (e.g. cyclopropyl), optionally substituted C6-C12-aryl (e.g. phenyl, naphthyl, 2-CN-phenyl, 3-CN-phenyl, 2-Cl-phenyl, 3-Cl-phenyl, 4-Cl-phenyl, 2,4-di-Cl-phenyl, 2-MeO-phenyl, 3-MeO-phenyl or 4-MeO-phenyl, a further example being 4-(2-fluoroethyl)-phenyl, 3-NH2-phenyl, 4-NH2-phenyl or 4-aminocarbonylamino-phenyl), hydroxy, C1-C6-alkylamino (e.g. isopropylamino or t-butylamino), di-C1-C6-alkylamino (e.g. diethylamino, a further example being dimethylamino), or optionally substituted C3-C12-heterocyclyl (e.g. 3-pyridyl, 6-chloro-3-pyridyl, 6-amino-3-pyridyl, 6-propylamino-3-pyridyl, 6-benzylamino-3-pyridyl, 2-thienyl, 5-(3-isoxazolyl)-2-thienyl, 1-methyl-1,2-diazol-4-yl, 1,3-dimethyl-1,2-diazol-4-yl, 1,3-diazol-4-yl, 1-methyl-1,3-diazol-4-yl, 1,2-dimethyl-1,3-diazol-4-yl, 8-quinolinyl, piperidin-1-yl, piperidin-3-yl, 1,4-piperazinyl, 1-ethoxycarbonyl-1,4-piperazinyl, 1-t-butoxycarbonyl-1,4-piperazinyl, 1-propyl-1,4-piperazinyl, 1-propylsulfonyl-1,4-piperazinyl, morpholinyl, 1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl or 6-chloro-imidazo[2,1-b][1,3]thiazole-5-yl, a further example being 3-azetidinyl, 1-methylcarbonyl-azetidin-3-yl, 3-pyrrolidinyl, 1-benzyloxycarbonylpyrrolidin-3-yl, 1,2-diazol-4-yl, 1,2,4-triazol-5-yl, 3-amino-1,2,4-triazol-5-yl, 5-methyl-1,2-oxazol-4-yl, 2-amino-1,3-thiazol-5-yl, 2-acetylamino-1,3-thiazol-5-yl, 5-methylamino-1,3,4-thiadiazol-2-yl, 4-methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl, 2-pyridyl, 6-methoxy-3-pyridyl, 3-phenoxy-3-pyridyl, 6-amino-3-pyridyl, 6-morpholin-4-yl-3-pyridyl, 2-amino-1,3-pyrimidin-5-yl, 4-piperidinyl or 1-benzyl-piperidin-4-yl).
In connection with R1, substituted C6-C12-aryl in particular includes C6-C12-aryl, such as phenyl or naphthyl, substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4-haloalkyl, cyano, C1-C4-alkoxy, C1-C4-haloalkoxy, amino, C1-C4-alkylamino, C1-C4-dialkylamino, morpholino and piperidinyl, aminocarbonylamino being a further example of such substituents. The same applies to substituted C6-C12-aryl in substituted C6-C12-aryl-C1-C4-alkyl.
In connection with R1, substituted C3-C12-heterocyclyl in particular includes C3-C12-heterocyclyl, such as pyridyl, thienyl, diazolyl, quinolinyl, piperidinyl, piperazinyl or morpholinyl (azetidinyl, triazolyl, thiazolyl, thiadiazolyl and pyrimidinyl being further examples of such C3-C12-heterocyclyl), substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4 haloalkyl, C1-C4-alkoxycarbonyl, cyano, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylsulfonyl, amino, C1-C4-alkylamino, C1-C4-dialkylamino, C6-C12-arylamino and C3-C12-heterocyclyl (e.g., morpholino or piperidinyl), C3-C12-aryl-C1-C4-alkyl, C1-C4-alkylcarbonyl, C3-C12-aryloxycarbonyl, C3-C12-aryloxy and C1-C4-alkylcarbonylamino being further examples of such substituents. The same applies to substituted C3-C12-heteroaryl in substituted C3-C12-heteroaryl-C1-C4-alkyl.
According to one embodiment, W is —NR8— and Y is a bond. According to an alternative embodiment, W is a bond and Y is —NR9—. According to a further alternative embodiment, W is a bond and Y is a bond, especially if R1 is a nitrogen-bound radical, e.g. nitrogen-bound heterocyclyl such as piperazinyl or morpholinyl.
According to one embodiment, Q is —S(O)2—. According to an alternative embodiment, Q is —C(O)—.
According to a particular embodiment, —W-A1-Q-Y— is —W-A1-S(O)2—NR9—, —NR8—S(O)2—, -A1-S(O)2— or —S(O)2—.
A1 is optionally substituted C1-C4-alkylene (e.g. 1,2-ethylene or 1,3-propylene) or a bond. In connection with A1, substituted C1-C4-alkylene in particular includes C1-C4-alkylene substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl and cyano. Preferably, A1 is a bond. If A1 is C1-C4-alkylene, W is preferably —NR8—.
A2 is optionally substituted C1-C4-alkylene (e.g. methylene or ethylene), C1-C4-alkylene-O—C1-C4-alkylene, C1-C4-alkylene-NR10—C1-C4-alkylene (e.g. ethylene-N(propylsulfonyl)-ethylene), optionally substituted C6-C12-arylene (e.g. 1,4-phenylene or 1,2-phenylene), optionally substituted C6-C12-heteroarylene (2,5-pyridylene or 2,3-pyridylene) or a bond. Preferably, A2 is optionally substituted C1-C4-alkylene (e.g. methylene or ethylene), C1-C4-alkylene-O—C1-C4-alkylene or —C4-alkylene-NR10—C1-C4-alkylene (e.g. ethylene-N(propylsulfonyl)-ethylene). More preferably, A2 is C1-Ca-alkylene (e.g. methylene or ethylene). Alternatively, it is preferred that A2 is optionally substituted C6-C12-arylene, in particular C6-C12-arylene selected from the group consisting of phen-1,4-ylene and phen-1,3-ylene, or optionally substituted C6-C12-heteroarylene, in particular C6-C12-heteroarylene selected from the group consisting of pyrid-2,5-ylene and pyrid-2,4-ylene. If A2 is a bond, X is preferably optionally substituted C1-C4-alkylene.
In connection with A2, substituted C1-C4-alkylene in particular includes C1-C4-alkylene substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4-haloalkyl and cyano.
In connection with A2, substituted C6-C12-arylene in particular includes C6-C12-arylene substituted with 1, 2 or 3 substituents selected from the group consisting of C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxycarbonyl, cyano, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylsulfonyl, amino, C1-C4-alkylamino, C1-C4-dialkylamino, C6-C12-arylamino and C3-C12-heterocyclyl (e.g., morpholino or piperidinyl).
In connection with A2, substituted C6-C12-heteroarylene in particular includes C6-C12-heteroarylene substituted with 1, 2 or 3 substituents selected from the group consisting of C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxycarbonyl, cyano, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylsulfonyl, amino, C1-C4-alkylamino, C1-C4-dialkylamino, C6-C12-arylamino and C3-C12-heterocyclyl (e.g, morpholino or piperidinyl).
X is —O—, —NR11—, —S— or optionally substituted C1-C4-alkylene (e.g. —CH2—). In connection with X, substituted C1-Ca-alkylene in particular includes C1-C4-alkylene substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4-haloalkyl and cyano. Preferably, X is —O—, —NR11 or —S—. More preferably, X is —O— or —NR11.
According to a particular embodiment, A2 is a bond and X is optionally substituted C1-C4-alkylene.
According to a further particular embodiment, —Y-A2-X— is —NR9—C1-C4-alkylene-O— (e.g. —NH—(CH2)2—O—), —C1-C4-alkylene-O— (e.g. —(CH2)3—O—), —NR9—C1-C4-alkylene-NH— (e.g. —NH—(CH2)2—NH—), —NR9—CH2CO—NH— (e.g. —NH—CH2CO—NH—), —NR9—C1-C4-alkylene- (e.g. —NH—CH2—), —NR9-1,4-phenylene-O— (e.g. —NH-1,4-phenylene-O—), —NR9-1,2-phenylene-O— (e.g. —NH-1,2-phenylene-O—), —NR9-2,5-pyridylene-O— (e.g. —NH-2,5-pyridylene-O—), —NR9-2,3-pyridylene-O— (e.g. —NH-2,3-pyridylene-O—) or —O—, with —Y-A2-X— preferably having 2 to 6, 3 to 5 and especially 4 atoms in the main chain.
According to a particular embodiment, R1—W-A′-Q-Y-A2-X— is R1—S(O)2—NH-A2-X—, R1—NH—S(O)2-A2-X—, R1—C(O)—NH-A2-X— or R1—NH—C(O)-A2-X—.
According to a further particular embodiment, —Y-A2-X— is —C1-C4-alkylene-O— or —NR9—C1-C4-alkylene-O—, with —Y-A2-X— preferably having 2 to 6, 3 to 5 and especially 4 atoms in the main chain. Particular examples of —Y-A2-X— include —(CH2)3—O— and —NR9—(CH2)2—O—.
The radical R1—W-A1-Q-Y-A2-X— (or the radical —CN) may, in principle, be bound to the 5-, 6-, 7- or 8-position of the tetrahydroisoquinoline skeleton:
In said formulae, R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6, R7 are as defined herein.
Tetrahydroisoquinolines having the radical R1—W-A1-Q-Y-A2-X— (or the radical —CN) in the 5-, 6-, 7-position are preferred.
Particularly preferred are tetrahydroisoquinolines having the radical R1—W-A1-Q-Y-A2-X— (or the radical —CN) in the 7-position.
In addition to the radical R1—W-A1-Q-Y-A2-X— (or the radical —CN), the tetrahydroisoquinolines of the invention may have one or more than one further substituent bound to the 5-, 6-, 7- or 8-position of the tetrahydroisoquinoline skeleton. In 5-, 6-, 7- and/or 8-position, the tetrahydroisoquinoline skeleton may thus be substituted with one or more than one radical R2. If there is more than one radical R2, these may be the same or different radicals. In particular, in 5-, 6-, 7- and/or 8-position, the tetrahydroisoquinoline skeleton may be substituted with one or more than one radical R2. The tetrahydroisoquinolines of the invention may therefore be represented by one of the following formulae:
or by corresponding formulae wherein the radical R1—W-A1-Q-Y-A2-X— is replaced by the radical —CN,
wherein R2a, R2b, R2c, R2d independently have the meaning of R2 and R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6, R7 are as defined herein.
R2 is hydrogen, halogen (e.g. fluoro, chloro or bromo), C1-C6-alkyl (e.g. methyl), halogenated C1-C4-alkyl (e.g. trifluoromethyl), hydroxy-C1-C4-alkyl, —CN, C2-C6-alkenyl, C2-C6-alkynyl, optionally substituted C6-C12-aryl (e.g. phenyl, 4-F-phenyl, 4-Cl-phenyl, 2-Me-phenyl, 4-Me-phenyl or 4-isopropyl-phenyl), hydroxy, C1-C6-alkoxy (e.g. methoxy), halogenated C1-C6-alkoxy, C2-C6-alkenyloxy, C6-C12-aryl-C1-C4-alkoxy (e.g. benzyloxy), C1-C6-alkylcarbonyloxy (e.g. methylcarbonyloxy), C1-C6-alkylthio, C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl, aminosulfonyl, amino, C1-C6-alkylamino, C2-C6-alkenylamino or optionally substituted C3-C12-heterocyclyl.
In connection with R2, substituted C6-C12-aryl in particular includes C6-C12-aryl, such as phenyl, substituted with 1, 2 or 3 substituents selected from the group consisting of halogen and C1-C4-alkyl, C1-C4-haloalkyl, cyano, C1-C4-alkoxy and C1-C4-haloalkoxy.
In connection with R2, substituted C3-C12-heterocyclyl in particular includes C3-C12-heterocyclyl, such as morpholinyl, pyrrolidinyl and piperidinyl, substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4-haloalkyl, cyano, C1-C4-alkoxy and C1-C4-haloalkoxy.
Preferably, R2 is hydrogen, halogen (e.g. fluoro or bromo), or C1-C6-alkoxy (e.g. methoxy).
According to a particular embodiment, the tetrahydroisoquinolines of the invention have one of the following formulae:
or one of the corresponding formulae wherein the radical R1—W-A1-Q-Y-A2-X— is replaced by the radical —CN,
wherein R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6, R7 are as defined herein.
In 1-, 3- and/or 4-position, the tetrahydroisoquinolines of the invention may be substituted with one or more than one radical R3. If there is more than one radical R3, these may be the same or different radicals. The tetrahydroisoquinolines of the invention may therefore be represented by the following formula:
or by the corresponding formula wherein the radical R1—W-A′-Q-Y-A2-X— is replaced by the radical —CN,
wherein R3a, R3b, R3c, R3d, R3e independently have the meaning of R3 and R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6, R7 are as defined herein.
According to a particular embodiment, the tetrahydroisoquinolines of the invention have one of the following formulae:
or one of the corresponding formulae wherein the radical R1—W-A1-O—Y-A2-X— is replaced by the radical —CN,
wherein R3a, R3b, R3e independently have the meaning of R3 and R1, W, A′, Q, Y, A2, X, R2, R3, R4, R5, R6, R7 are as defined herein.
R3 is hydrogen, halogen, C1-C6-alkyl (e.g. 4-methyl or 4,4-dimethyl), C1-C6-alkoxy, or two radicals R3 together with the carbon atom to which they are attached form a carbonyl group.
Preferably, R3 is hydrogen or C1-C6-alkyl (e.g. 4,4-dimethyl).
R4 is hydrogen, C1-Cs-alkyl (e.g. methyl, ethy or, isopropyl), halogenated C1-C4-alkyl (e.g. 2,2,2-trifluoroethyl), hydroxy-C1-C4-alkyl, C1-C6-alkoxy-C1-C4-alkyl, amino-C1-C4-alkyl (e.g. aminoethyl), CH2CN, —CHO, C1-C4-alkylcarbonyl (e.g. methylcarbonyl), (halogenated C1-C4-alkyl)carbonyl (e.g. trifluoromethylcarbonyl), C6-C12-arylcarbonyl, C1-C6-alkylaminocarbonyl (e.g. methylaminocarbonyl or ethylaminocarbonyl), C2-C6-alkenyl (e.g. 1,2-propenyl), —C(═NH)NH2, —C(═NH)NHCN, C1-C6-alkylsulfonyl (e.g. propylsulfonyl or methylsulfonyl), C6-C12-arylsulfonyl (e.g. phenylsulfonyl), amino, —NO or C3-C12-heterocyclyl (e.g. 1,3-diazol-2-yl).
Preferably, R4 is hydrogen, C1-C6-alkyl (e.g. methyl), halogenated C1-C4-alkyl (e.g. 2,2,2-trifluoroethyl), amino-C1-C4-alkyl (e.g. aminoethyl), CH2CN, C1-C4-alkylcarbonyl (e.g. methylcarbonyl), (halogenated C1-C4-alkyl)carbonyl (e.g. trifluoromethylcarbonyl), —C(═NH)NH2, —C(═NH)NHCN, C1-Cs-alkylsulfonyl (e.g. propylsulfonyl), amino, —NO or C3-C12-heterocyclyl (e.g. 1,3-diazol-2-yl).
R5 is optionally substituted C1-C6-alkyl (e.g. methyl or isopropyl), C1-C6-alkylamino-C1-C4-alkyl (e.g. isopropylaminomethyl), di-C1-C6-alkylamino-C1-C4-alkyl (e.g. dimethylaminomethyl or diethylaminomethyl), C3-C12-heterocyclyl-C1-C6-alkyl (e.g. N-pyrrolidinylmethyl or N-morpholinylmethyl), optionally substituted C6-C12-aryl (e.g. 4-Cl-phenyl) or hydroxy.
R6 is hydrogen, optionally substituted C1-C6-alkyl (e.g. methyl) or hydroxy.
In connection with R5, substituted C1-C6-alkyl in particular includes C1-C6-alkyl substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, hydroxy, C1-C4-alkoxy and amino.
In connection with R5, substituted C6-C12-aryl in particular includes C6-C12-aryl, such as phenyl, substituted with 1, 2 or 3 substituents selected from the group consisting of C1-C4-alkyl, C1-C4-haloalkyl, cyano, C1-C4-alkoxy and C1-C4-haloalkoxy.
Preferably, R5 is C1-C6-alkyl (e.g. isopropyl, a further example being methyl).
Preferably, R6 is hydrogen or C1-C6-alkyl (e.g. methyl).
According to a particular embodiment, R5 is C1-C6-alkyl (e.g. methyl) and R6 is C1-C6-alkyl (e.g. methyl).
According to a particular embodiment, R6 is hydrogen.
Alternatively, R5 and R6 together are carbonyl or, preferably, optionally substituted C1-C4-alkylene (e.g. ethylene, propylene, butylene, pentylene, 2,2-difluoropropylene or 2,2-dimethylpropylene), wherein one —CH2— of C1-C4-alkylene may be replaced by an oxygen atom or —NR12—.
In connection with R5 and R6, substituted C1-C4-alkylene in particular includes C1-C4-alkylene substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, C1-C4-alkyl, C1-C4-haloalkyl, cyano, C1-C4-alkoxy and C1-C4-haloalkoxy.
R7 is optionally substituted C6-C12-aryl (e.g. phenyl, 4-F-phenyl, 2-Cl-phenyl, 3-Cl-phenyl, 4-Cl-phenyl, 2,4-di-Cl-phenyl, 2,6-di-Cl-phenyl, 3,4-di-Cl-phenyl, 2-Br-phenyl, 4-Br-phenyl, 2-CF3-phenyl, 4-CN-phenyl, 2-MeO-phenyl, 2-MeO-phenyl, 4-MeO-phenyl, 3-OH-4-Cl-phenyl, 2-Cl-4-MeO-phenyl, 2-MeO-4-Cl-phenyl or 2-Me-phenyl, a further example being 2-F-phenyl, 3-F-phenyl or 2-NH2-3-Cl-phenyl), optionally substituted C3-C12-cycloalkyl or optionally substituted C3-C12-heterocyclyl (e.g. 2-pyridyl or 3-Cl-pyridyl).
In connection with R7, substituted C3-C12-cycloalkyl in particular includes C3-C12-cycloalkyl, such as cyclopropyl or cyclohexyl, substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, optionally substituted C1-C6-alkyl, halogenated C1-C6-alkyl, CN, hydroxy, C1-C6-alkoxy, halogenated C1-C6-alkoxy, amino, C1-C6-alkylamino, di-C1-C6-alkylamino and C3-C12-heterocyclyl.
In connection with R7, substituted C6-C12-aryl in particular includes C6-C12-aryl, such as phenyl, substituted with 1, 2 or 3 substituents selected from the group consisting of halogen (e.g. F, Cl, Br), optionally substituted C1-C6-alkyl (e.g. methyl), halogenated C1-C6-alkyl (e.g. trifluormethyl), CN, hydroxy, C1-C6-alkoxy (e.g. methoxy), halogenated C1-C6-alkoxy, amino, C1-C6-alkylamino, di-C1-C6-alkylamino and C3-C12-heterocyclyl.
In connection with R7, substituted C3-C12-heterocyclyl in particular includes C3-C12-heterocyclyl, such as pyridyl and in particular 2-pyridyl, substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, optionally substituted C1-C6-alkyl, halogenated C1-C6-alkyl, CN, hydroxy, C1-C6-alkoxy, halogenated C1-C6-alkoxy, amino, C1-C6-alkylamino, di-C1-C6-alkylamino and C3-C12-heterocyclyl.
In connection with R7, C3-C12-heterocyclyl in particular is C3-C12-heteroaryl, e.g. pyridyl and in particular 2-pyridyl.
Preferably, R7 is optionally substituted C6-C12-aryl, in particular as in the tetrahydroisoquinolines of the formula:
or the corresponding formula wherein the radical R1—W-A1-Q-Y-A2-X— is replaced by the radical —CN,
wherein R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6 are as defined herein, and R13a, R12b, R13c, R13d, R13e independently are hydrogen, halogen (e.g. F, Cl or Br), optionally substituted C1-C6-alkyl (e.g. methyl), halogenated C1-C6-alkyl (e.g. trifluormethyl), CN, hydroxy, C1-C6-alkoxy (e.g. methoxy), amino, C1-C6-alkylamino, di-C1-C6-alkylamino or C3-C12-heterocyclyl.
It is also preferred if R7 is optionally substituted C6-C12-heteroaryl, in particular as in the tetrahydroisoquinolines of the formula:
or the corresponding formula wherein the radical R1—W-A1-Q-Y-A2-X— is replaced by the radical —CN,
wherein R1, W, A1, Q, Y, A2, X, R2, R3, R4, R5, R6 are as defined herein, and R13b, R13c, R13d, R13e independently are hydrogen, halogen (e.g. F, Cl or Br), optionally substituted C1-C6-alkyl (e.g. methyl), halogenated C1-C6-alkyl (e.g. trifluormethyl), CN, hydroxy, C1-C6-alkoxy (e.g. methoxy), amino, C1-C6-alkylamino, di-C1-C6-alkylamino or C3-C12-heterocyclyl.
In connection with R7 or R13a, R13b, R13c, R13d, R13e, substituted C1-C6-alkyl in particular includes C1-C6-alkyl, especially C1-C4-alkyl, substituted with 1, 2 or 3 substituents selected from the group consisting of hydroxy, C1-C6-alkoxy, amino, C1-C6-alkylamino, di-C1-C6-alkylamino and C3-C12-heterocyclyl (e.g. morpholinyl or piperidinyl).
According to a particular embodiment, R13a, R13b, R13d, R13e are hydrogen and R13c is different from hydrogen (para-mono-substitution).
According to a further particular embodiment, R13a, R13c, R13d, R13e are hydrogen and R13b is different from hydrogen (meta-mono-substitution).
In connection with R13a, R13b, R13c, R13d, R13e, C3-C12-heterocyclyl in particular includes morpholinyl, imidazolyl and pyrazolyl.
R8 is hydrogen, C1-C6-alkyl. Preferably, R8 is hydrogen.
R9 is hydrogen, C1-C6-alkyl or amino-C1-C6-alkyl (e.g. amino-n-propyl, a further example being 2-aminoethyl). Preferably, R9 is hydrogen.
R10 is hydrogen, C1-C6-alkyl or C1-C6alkysulfonyl (e.g. n-propylsulfonyl). Preferably, R10 is hydrogen.
R11 is hydrogen or C1-C6-alkyl. Preferably, R11 is hydrogen.
Alternatively, R9, R11 together are C1-C4-alkylene (e.g. ethylene).
R12 is hydrogen or C1-C6-alkyl. Preferably, R12 is hydrogen.
According to a particular embodiment, A2 is C1-Ca-alkylene (e.g. ethylene), Y is —NR9—, X is —NR11—, and R9, R11 together are C1-C4-alkylene (e.g. ethylene).
According to a further particular embodiment, A2 is C1-C4-alkylene-NR10—C1-C4-alkylene and —NR10— is C1-C6-alkylsulfonyl (e.g. ethylene-N(propylsulfonyl)-ethylene).
Particular embodiments of tetrahydroisoquinolines of the invention result if
Further particular embodiments of tetrahydroisoquinolines of the invention result if
Particular compounds of the present invention are the tetrahydroisoquinolines disclosed in preparation examples and physiologically tolerated acid addition salts thereof.
The compounds of the formula (I) can be prepared by analogy to methods which are well known in the art. Suitable methods for the preparation of compounds of formula (I) is out-lined in the following schemes.
The process depicted in scheme 1 is useful for obtaining tetrahydroisoquinolines, wherein X is —O— or —S—.
In scheme 1, the variables R2, R3, R5, R6, R7 are as defined herein and L a suitable protecting group (e.g. L=Me).
The amide formation in scheme 1 can also be carried out with other peptide coupling methods (cf. “The Practice of Peptide Synthesis”, M. Bodansky, A. Bodansky, Springer Verlag, 1994). In the Bischler-Napieralki cyclization reaction step, POCl3 can be replaced by PCl5, other Lewis acids or combinations thereof.
The process depicted in scheme 1 is also useful for obtaining tetrahydroisoquinolines, wherein X is optionally substituted alkylene. In this case, L is a group that represents, or can be converted into, the desired side chain R1—W-A1-Q-Y-A2.
The process depicted in scheme 2 is in particular useful for obtaining tetrahydroisoquinolines, wherein X is —O— and R5 and R6 together are —CH2CF2CH2—.
In scheme 2, the variables R2, R3, R7 are as defined herein.
Analogously, intermediates a and b can be converted into the corresponding dihydroisoquinolines of formula (II) and tetrahydroisoquinolines of formula (I).
The process depicted in scheme 3 is in particular useful for obtaining tetrahydroisoquinolines, wherein X is —O—, R5 is hydroxy and R6 is hydrogen.
In scheme 3, the variables R2, R3, R7 are as defined herein.
The process depicted in scheme 4 is useful for obtaining tetrahydroisoquinolines, wherein X is —NH—.
In scheme 4, the variables R2, R3, R5, R6, R7 are as defined herein and R is - or can be converted into —R1—W-A1-.
In the Bischler-Napieralski cyclization reaction step, POCl3 can be replaced by PCl5, other Lewis acids or combinations thereof.
The process depicted in scheme 5 is useful for obtaining tetrahydroisoquinolines, wherein X is —O— or —NR11—, and R3 is 1-alkyl.
In scheme 5, the variables R2, R3, R5, R6, R7 are as defined herein.
The process depicted in scheme 6 is useful for obtaining tetrahydroisoquinolines, wherein R4 is halogenated alkyl.
In scheme 6, the variables R2, R3, R5, R6, R7 are as defined herein.
Tetrahydroisoquinolines wherein R4 is —C(═NH)NHCN may be obtained by reacting the intermediate tetrahydroisoquinoline c (wherein R1—W-A1- is e.g. n-propyl) with sodium dicyanamide. Tetrahydroisoquinolines wherein R4 is —C(═NH)NH2 may be obtained by reacting the intermediate tetrahydroisoquinoline c with (CH3SC(═NH)NH3)2SO4.
The process depicted in scheme 7 is useful for obtaining tetrahydroisoquinolines, wherein X is —O—, A2 is optionally substituted alkylene, Y is —NR9—, and Q is —S(O)2.
In scheme 7, the variables R1, W, A1, R2, R3, R5, R6, R7 are as defined herein.
The process depicted in scheme 8 is useful for obtaining tetrahydroisoquinolines, wherein X is —NR11—, A2 is optionally substituted alkylene, Y is —NR9—, R9 and R11 together are alkylene, and Q is —S(O)2.
In scheme 8, the variables R1, W, A1, R2, R3, R5, R6, R7 are as defined herein.
The process depicted in scheme 9 is useful for obtaining tetrahydroisoquinolines, wherein R7 is optionally substituted heterocyclyl such as optionally substituted pyridyl.
In scheme 9, the variables R1, W, A1, Q, Y, A2, X R2, R3, R4, R5, R6 are as defined herein.
The process depicted in scheme 10 is useful for obtaining tetrahydroisoquinolines, wherein R is —CN or —Y-A2-X— is —NR9—C1-C4-alkylene-.
In scheme 10, the variables R2, R3, R4, R5, R6, R7, R9 are as defined herein and n is 1, 2, 3 or 4.
More specifically, the process depicted in scheme 11 is useful for obtaining tetrahydroisoquinolines, wherein R is —CN or —Y-A2-X— is —NR9—CH2—.
In scheme 11, the variables R1, W, A1, Q, R2, R3, R4, R5, R6, R7 are as defined herein.
Further, the process depicted in scheme 12 is useful for obtaining tetrahydroisoquinolines, wherein —Y-A2-X— is —NR9—C1-C4-alkylene-.
In scheme 12, the variables R1, W, A1, Q, R2, R3, R4, R5, R6, R7 are as defined herein and n is 1, 2, 3 or 4.
Further, the process depicted in scheme 13 is useful for obtaining tetrahydroisoquinolines, wherein —Y-A2-X— is —NR9—C1-C4-alkylene-X—.
In scheme 13, the variables R1, W, A1, X, R2, R3, R4, R5, R6, R7, R9 are as defined herein and A2′ together with the adjacent methylene group is A2.
Protecting group transformations described in scheme 1 to 13 can be replaced by suitable alternatives, cf. “Protective Groups in Organic Synthesis”, Theodora W. Greene, Peter G. M. Wuts, John Wiley & Sons, 1999 and “Protecting Groups”, Philip J. Kocienski, Georg Thieme Verlag Stuttgart, New York 1994.
Alternatively, tetrahydroisoquinolines can be prepared from isoquinolines (cf. Hetarene II, Teil 1, Houben Weyl, Band E7a, Hrsg. R. P. Kreher, p. 583-726, Thieme Verlag 1991) by reduction (e.g.: Arto; Kanerva, Liisa T.; Fueloep, Ferenc, Tetrahedron: Asymmetry (2007), 18(12), 1428-1433; Reimann, Eberhard; Ettmayr, Christian, Monatshefte fuer Chemie (2004), 135(10), 1289-1295; Pitts, Michael R.; Harrison, Justin R.; Moody, Christopher J., Journal of the Chemical Society, Perkin Transactions 1 (2001), (9), 955-977; Guillonneau, Claude; Pierre, Alain; Charton, Yves; Guilbaud, Nicolas; Kraus-Berthier, Laurence; Leonce, Stephane; Michel, Andre; Bisagni, Emile; Atassi, Ghanem., Journal of Medicinal Chemistry (1999), 42(12), 2191-2203; Clezy, Peter S.; Duncan, Mark W.; Smythe, George A., Australian Journal of Chemistry (1988), 41(4), 483-91; Kaiser, Carl; Oh, Hye Ja; Garcia-Slanga, Blanche J.; Sulpizio, Anthony C.; Hieble, J. Paul; Wawro, Joyce E.; Kruse, Lawrence I., Journal of Medicinal Chemistry (1986), 29(11), 2381-4; Ferles, Miloslav; Sputova, Michaela; Tegza, Marian., Collection of Czechoslovak Chemical Communications (1981), 46(1), 262-5).
Tetrahydroisoquinolines can also be prepared asymmetrically (cf. Chrzanowska, Maria; Rozwadowska, Maria D., Chemical Reviews (Washington, D.C., United States) (2004), 104(7), 3341-3370 and references cited therein).
The acid addition salts of the tetrahydroisoquinolines of formula (I) are prepared in a customary manner by mixing the free base with a corresponding acid, optionally in solution in an organic solvent, for example a lower alcohol, such as methanol, ethanol or propanol, an ether, such as methyl tert-butyl ether or diisopropyl ether, a ketone, such as acetone or methyl ethyl ketone, or an ester, such as ethyl acetate.
The compounds of the formula (I) are capable of inhibiting the activity of glycine transporter, in particular glycine transporter 1 (GlyT1).
The utility of the compounds in accordance with the present invention as inhibiting the glycine transporter activity, in particular GlyT1 activity, may be demonstrated by methodology known in the art. For instance, human GlyT1c expressing recombinant hGlyT1c—5_CHO cells can be used for measuring glycine uptake and its inhibition (IC50) by a compound of formula (I).
Amongst the compounds of the formula (I) those are preferred which achieve effective inhibition at low concentrations. In particular, compounds of the formula (I) are preferred which inhibit glycine transporter 1 (GlyT1) at a level of IC50<1 μMol, more preferably at a level of IC50<0.5 μMol, particularly preferably at a level of IC50<0.2 μMol and most preferably at a level of IC50<0.1 μMol.
The compounds of the formula (I) according to the present invention are thus useful as pharmaceuticals.
The present invention therefore also relates to pharmaceutical compositions which comprise an inert carrier and a compound of the formula (I).
The present invention also relates to the use of the compounds of the formula (I) in the manufacture of a medicament for inhibiting the glycine transporter GlyT1, and to corresponding methods of inhibiting the glycine transporter GlyT1.
The NMDA receptor is central to a wide range of CNS processes, and its role in a variety of diseases in humans or other species has been described. GlyT1 inhibitors slow the removal of glycine from the synapse, causing the level of synaptic glycine to rise. This in turn increases the occupancy of the glycine binding site on the NMDA receptor, which increases activation of the NMDA receptor following glutamate release from the presynaptic terminal. Glycine transport inhibitors and in particular inhibitors of the glycine trans-porter GlyT1 are thus known to be useful in treating a variety of neurologic and psychiatric disorders.
The present invention thus further relates to the use of the compounds of the formula (I) for the manufacture of a medicament for treating a neurologic or psychiatric disorder, and to corresponding methods of treating said disorders.
According to a particular embodiment, the disorder is associated with glycinergic or glutamatergic neurotransmission dysfunction.
According to a further particular embodiment, the disorder is one or more of the following conditions or diseases: schizophrenia or a psychotic disorder including schizophrenia (paranoid, disorganized, catatonic or undifferentiated), schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, shared psychotic disorder, psychotic disorder due to a general medical condition and substance-induced psychotic disorder, including both the positive and the negative symptoms of schizophrenia and other psychoses; cognitive disorders including dementia (associated with Alzheimer's disease, ischemia, multi-infarct dementia, trauma, vascular problems or stroke, HIV disease, Parkinson's disease, Huntington's disease, Pick's disease, Creutzfeldt-Jacob disease, perinatal hypoxia, other general medical conditions or substance abuse); delirium, amnestic disorders or cognitive impairment including age related cognitive decline; anxiety disorders including acute stress disorder, agoraphobia, generalized anxiety disorder, obsessive-compulsive disorder, panic attack, panic disorder, post-traumatic stress disorder, separation anxiety disorder, social phobia, specific phobia, substance-induced anxiety disorder and anxiety due to a general medical condition; substance-related disorders and addictive behaviors (including substance-induced delirium, persisting dementia, persisting amnestic disorder, psychotic disorder or anxiety disorder; tolerance, dependence or withdrawal from substances including alcohol, amphetamines, cannabis, cocaine, hallucinogens, inhalants, nicotine, opioids, phencyclidine, sedatives, hypnotics or anxiolytics); obesity, bulimia nervosa and compulsive eating disorders; bipolar disorders, mood disorders including depressive disorders; depression including unipolar depression, seasonal depression and post-partum depression, premenstrual syndrome (PMS) and premenstrual dysphoric disorder (PDD), mood disorders due to a general medical condition, and substance-induced mood disorders; learning disorders, pervasive developmental disorder including autistic disorder, attention deficit disorders including attention-deficit hyperactivity disorder (ADHD) and conduct disorder; movement disorders, including akinesias and akinetic-rigid syndromes (including Parkinson's disease, drug-induced parkinsonism, postencephalitic parkinsonism, progressive supranuclear palsy, multiple system atrophy, corticobasal degeneration, parkinsonism-ALS dementia complex and basal ganglia calcification), medication-induced parkinsonism (such as neuroleptic-induced parkinsonism, neuroleptic malignant syndrome, neuroleptic-induced acute dystonia, neuroleptic-induced acute akathisia, neuroleptic-induced tardive dyskinesia and medication-induced postural tremor), Gilles de la Tourette's syndrome, epilepsy, muscular spasms and disorders associated with muscular spasticity or weakness including tremors; dyskinesias [including tremor (such as rest tremor, postural tremor and intention tremor), chorea (such as Sydenham's chorea, Huntington's disease, benign hereditary chorea, neuroacanthocytosis, symptomatic chorea, drug-induced chorea and hemiballism), myoclonus (including generalised myoclonus and focal myoclonus), tics (including simple tics, complex tics and symptomatic tics), and dystonia (including generalised dystonia such as iodiopathic dystonia, drug-induced dystonia, symptomatic dystonia and paroxymal dystonia, and focal dystonia such as blepharospasm, oromandibular dystonia, spasmodic dysphonia, spamodic torticollis, axial dystonia, dystonic writer's cramp and hemiplegic dystonia)]; urinary incontinence; neuronal damage including ocular damage, retinopathy or macular degeneration of the eye, tinnitus, hearing impairment and loss, and brain edema; emesis; and sleep disorders including insomnia and narcolepsy.
The compounds of formula (I) are particularly useful in the treatment of schizophrenia, bipolar disorder, depression including unipolar depression, seasonal depression and postpartum depression, premenstrual syndrome (PMS) and premenstrual dysphoric disorder (PDD), learning disorders, pervasive developmental disorder including autistic disorder, attention deficit disorders including Attention-Deficit/Hyperactivity Disorder, tic disorders including Tourette's disorder, anxiety disorders including phobia and post traumatic stress disorder, cognitive disorders associated with dementia, AIDS dementia, Alzheimer's, Parkinson's, Huntington's disease, spasticity, myoclonus, muscle spasm, tinnitus and hearing impairment and loss are of particular importance.
Particular cognitive disorders are dementia, delirium, amnestic disorders and cognitive impartment including age-related cognitive decline.
Particular anxiety disorders are generalized anxiety disorder, obsessive-compulsive disorder and panic attack.
Particular schizophrenia or psychosis pathologies are paranoid, disorganized, catatonic or undifferentiated schizophrenia and substance-induced psychotic disorder.
Particular neurologic disorders that can be treated with the compounds of the formula (I) include in particular a cognitive disorder such as dementia, cognitive impairment, attention deficit hyperactivity disorder.
Particular psychiatric disorders that can be treated with the compounds of the formula (I) include in particular an anxiety disorder, a mood disorder such as depression or a bipolar disorder, schizophrenia, a psychotic disorder.
Within the context of the treatment, the use according to the invention of the compounds of the formula (I) involves a method. In this method, an effective quantity of one or more compounds or the formula (I), as a rule formulated in accordance with pharmaceutical and veterinary practice, is administered to the individual to be treated, preferably a mammal, in particular a human being. Whether such a treatment is indicated, and in which form it is to take place, depends on the individual case and is subject to medical assessment (diagnosis) which takes into consideration signs, symptoms and/or malfunctions which are present, the risks of developing particular signs, symptoms and/or malfunctions, and other factors.
As a rule, the treatment is effected by means of single or repeated daily administration, where appropriate together, or alternating, with other drugs or drug-containing preparations.
The invention also relates to the manufacture of pharmaceutical compositions for treating an individual, preferably a mammal, in particular a human being. Thus, the compounds of the formula (I) are customarily administered in the form of pharmaceutical compositions which comprise an inert carrier (e.g. a pharmaceutically acceptable excipient) together with at least one compound according to the invention and, where appropriate, other drugs. These compositions can, for example, be administered orally, rectally, transdermally, subcutaneously, intravenously, intramuscularly or intranasally.
Examples of suitable pharmaceutical formulations are solid medicinal forms, such as powders, granules, tablets, in particular film tablets, lozenges, sachets, cachets, sugar-coated tablets, capsules, such as hard gelatin capsules and soft gelatin capsules, suppositories or vaginal medicinal forms, semisolid medicinal forms, such as ointments, creams, hydrogels, pastes or plasters, and also liquid medicinal forms, such as solutions, emulsions, in particular oil-in-water emulsions, suspensions, for example lotions, injection preparations and infusion preparations, and eyedrops and eardrops. Implanted release devices can also be used for administering inhibitors according to the invention. In addition, it is also possible to use liposomes or microspheres.
When producing the compositions, the compounds according to the invention are optionally mixed or diluted with one or more carriers (excipients). Carriers (excipients) can be solid, semisolid or liquid materials which serve as vehicles, carriers or medium for the active compound.
Suitable carriers (excipients) are listed in the specialist medicinal monographs. In addition, the formulations can comprise pharmaceutically acceptable auxiliary substances, such as wetting agents; emulsifying and suspending agents; preservatives; antioxidants; antiirritants; chelating agents; coating auxiliaries; emulsion stabilizers; film formers; gel formers; odor masking agents; taste corrigents; resin; hydrocolloids; solvents; solubilizers; neutralizing agents; diffusion accelerators; pigments; quaternary ammonium compounds; refatting and overfatting agents; raw materials for ointments, creams or oils; silicone derivatives; spreading auxiliaries; stabilizers; sterilants; suppository bases; tablet auxiliaries, such as binders, fillers, glidants, disintegrants or coatings; propellants; drying agents; opacifiers; thickeners; waxes; plasticizers and white mineral oils. A formulation in this regard is based on specialist knowledge as described, for example, in Fiedler, H. P., Lexikon der Hilfsstoffe für Pharmazie, Kosmetik and angrenzende Gebiete [Encyclopedia of auxiliary substances for pharmacy, cosmetics and related fields], 4th edition, Aulendorf: ECV-Editio-Cantor-Verlag, 1996.
The following examples serve to explain the invention without limiting it.
The compounds were characterized by mass spectrometry, generally recorded via HPLC-MS in a fast gradient on C18-material (electrospray-ionisation (ESI) mode).
Sodium hydride (60% in paraffin, 1.40 g, 32.1 mmol) was washed with n-hexane. N,N-dimethylacetamide (DMA, 30 ml) was added. 1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (example 82) (5.00 g, 16.0 mmol) dissolved in DMA (70 ml) was added dropwise at RT. After stirring for an additional hour tert-butyl-2-bromoethylcarbamate (10.78 g, 48.1 mmol) was added in portions. The reaction mixture was added to a half concentrated solution of sodium chloride and extracted with ethylacetate. The organic layers were washed with water and then with saturated sodium chloride solution, and dried with magnesium sulphate. The solvent was removed in vacuum to give a residue (11.1 g) that was purified by flash chromatography on silica (heptane/ethylacetate 3:1) to give 6.20 g (13.6 mmol, 85%) of tert-butyl 2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethylcarbamate.
After adding HCl dissolved in isopropanole (15 ml, 6 molar solution) to a solution of tert-butyl 2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethylcarbamate (6.20 g, 13.6 mmol) in dichloromethane (200 ml) the mixture was stirred for 14 h. The resulting precipitate was removed by filtration and washed with diisopropylether. After drying the filtrate was dissolved in water and basified with 2N NaOH. Extraction with dichloromethane the combined organic layers were washed with water and saturated NaCl solution. Drying with MgSO4 and removal of the solvent gave 2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethanamine (3.77 g, 10.6 mmol, 78%).
2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethanamine (80.0 mg, 0.15 mmol), 2,4-dichloro-benzoyl chloride (44.3 mg, 0.21 mmol), and triethyl amine (48.6 mg, 0.48 mmol) were dissolved in dichloromethane (2 ml) and stirred for 14 h at RT. Water was added and the mixture was extracted with ethyl acetate. The organic layers were washed with water and saturated NaCl solution, dried with MgSO4, and the solvent was removed. The residue was purified by flash chromatography on silica gel using methylenchloride/MeOH 98:2→95:5 to give 2,4-dichloro-N-(2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-benzamide as a colourless oil (85.0 mg, 0.16 mmol, 84%).
2,4-dichloro-N-(2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-benzamide (80.0 mg, 0.15 mmol) and sodium borohydride (12.0 mg, 0.32 mmol) were dissolved in H2O (10 ml) and MeOH (0.5 ml) and stirred for 14 h at RT. Water was added and the mixture was extracted with ethyl acetate. The organic layers were washed with water and saturated NaCl solution, dried with MgSO4, and the solvent was removed. The residue was transferred into the hydrochloride salt using HCl dissolved in isopropanole (6 molar solution). Crystallization gave 2,4-Dichloro-N-(2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-benzamide (60.0 mg, 0.11 mmol, 70%) as white solid.
ESI-MS [M+H]+=529.1 Calculated for C28H27Cl3N2O2.HCl=528
2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethanamine (example 1, 100 mg, 0.26 mmol), aminopyridine (34.0 mg, 0.28 mmol), and methanesulfonyl chloride (31.9 mg, 0.28 mmol) were dissolved in THF (5 ml) and stirred for 14 h at RT. Water was added and the mixture was extracted with ethyl acetate. The organic layers were washed with water and saturated NaCl solution, dried with MgSO4, and the solvent was removed. The residue was purified by flash chromatography on silica gel using methylenehloride/MeOH 98:2→95:5 to give N-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-methanesulfonamide (90.0 mg, 0.21 mmol, 78%).
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 62% yield.
ESI-MS [M+H]+=435 Calculated for C22H27ClN2O3S=434
The synthesis was performed in analogy to example 1 (procedure 3) using benzoyl chloride instead of 2,4-dichloro-benzoyl chloride to give the final product in 74% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 62% yield.
ESI-MS [M+H]+=461.1 Calculated for C28H29ClN2O2=460
The synthesis was performed in analogy to example 2 (procedure 1) using propanesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 74% yield. ESI-MS [M+H]+=461.1 Calculated for C24H29ClN2O3S=460
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 16% yield.
ESI-MS [M+H]+=463.1 Calculated for C24H31ClN2O3S=462
The synthesis was performed in analogy to example 1 (procedure 3) using isobutyryl chloride instead of 2,4-dichloro-benzoyl chloride to give the final product in 76% yield.
ESI-MS [M+H]+=425.2 Calculated for C25H29ClN2O2=424
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 67% yield.
ESI-MS [M+H]+=427.2 Calculated for C25H31ClN2O2=426
The synthesis was performed in analogy to example 1 (procedure 3) using acetyl chloride instead of 2,4-dichloro-benzoyl chloride to give the final product in 86% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 40% yield.
ESI-MS [M+H]+=399.1 Calculated for C23H27ClN2O2=398
The synthesis was performed in analogy to example 2 (procedure 1) using ethanesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 84% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 59% yield.
ESI-MS [M+H]+=449.1 Calculated for C23H29ClN2O3S=448
The synthesis was performed in analogy to example 2 (procedure 1) using 2-methyl-propane-1-sulfonyl chloride instead of methanesulfonyl chloride to give the final product in 79% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 67% yield.
ESI-MS [M+H]+=477.2 Calculated for C25H33ClN2O3S=476
The synthesis was performed in analogy to example 2 (procedure 1) using naphthalene-2-sulfonyl chloride instead of methanesulfonyl chloride to give the final product in 69% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 66% yield.
ESI-MS [M+H]+=547.2 Calculated for C31H31ClN2O3S=546
The synthesis was performed in analogy to example 2 (procedure 1) using pyridine-3-sulfonyl chloride instead of methanesulfonyl chloride to give the final product in 76% yield.
10.2 Pyridine-3-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide hydrochloride
The synthesis was performed in analogy to example 2, procedure 4, to give the final product in 24% yield.
ESI-MS [M+H]+=498.1 Calculated for C26H28ClN3O3S=497
The synthesis was performed in analogy to example 2 (procedure 1) using trifluoro-methanesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 47% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 78% yield.
ESI-MS [M+H]+=489.1 Calculated for C22H24ClF3N2O3S=488
2-(3-Fluoro-4-methoxy-phenyl)-ethylamine was synthesized from (3-fluoro-4-methoxy-phenyl)-acetonitrile following classical reduction methods described e.g. in “MB. Smith, J. March, March's Advanced Organic Chemistry, 6th Edition, John Wiley & Sans, Hoboken, 2007” and literature cited in there. The product was obtained as colourless oil in a yield of 33%.
The synthesis was performed in analogy to example 82, procedure 1, starting from 2-(3-fluoro-4-methoxy-phenyl)-ethylamine to give the final product as a white solid in 100% yield.
ESI-MS [M+H]+=362.1 Calculated for C20H21ClFNO2=361
The synthesis was performed in analogy to example 82, procedure 2, starting from 1-(4-Chloro-phenyl)-cyclobutanecarboxylic acid [2-(3-fluoro-4-methoxy-phenyl)-ethyl]-amide to give the final product as a colourless oil in 23% yield.
The synthesis was performed in analogy to example 82, procedure 3, starting from 1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-7-methoxy-3,4-dihydro-isoquinoline to give the final product as a white solid in 25% yield.
ESI-MS [M+H]+=330.1 Calculated for C19H17ClFNO=329
The synthesis was performed in analogy to example 1, procedure 1, starting from 1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-ol to give the final product in 92% yield.
The synthesis was performed in analogy to example 1, procedure 2, starting from (2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-carbamic acid tert-butyl ester to give the final product in 90% yield.
ESI-MS [M+M]+=373.1 Calculated for C26H30ClFN2O3=372
The synthesis was performed in analogy to example 2, procedure 1, starting from 2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethylamine to give the final product in 89% yield.
ESI-MS [M+H]+=451.1 Calculated for C22H24ClFN2O3S=450
The synthesis was performed in analogy to example 2, procedure 2, starting from N-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-methanesulfonamide to give the final product in 32% yield.
ESI-MS [M+H]+=453.1 Calculated for C22H26ClFN2O3S=452
The synthesis was performed in analogy to example 2, procedure 1, starting from 2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethylamine to give the final product in 86% yield.
ESI-MS [M+H]+=513.2 Calculated for C27H26ClFN2O3S=512
The synthesis was performed in analogy to example 2, procedure 2, starting from N-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-benzenesulfonamide to give the final product in 35% yield.
ESI-MS [M+H]+=515.2 Calculated for C27H28ClFN2O3S=514
The synthesis was performed in analogy to example 2, procedure 1, starting from 2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethylamine to give the final product in 89% yield.
ESI-MS [M+H]+=514.2 Calculated for C26H25ClFN3O3S=513
The synthesis was performed in analogy to example 2, procedure 2, starting from N-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-benzenesulfonamide to give the final product in 35% yield.
ESI-MS [M+H]+=516.2 Calculated for C26H27ClFN3O3S=515
The synthesis was performed in analogy to example 2, procedure 1, starting from 2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethylamine to give the final product in 89% yield.
ESI-MS [M+H]+=479.1 Calculated for C24H28ClFN2O3S=478
The synthesis was performed in analogy to example 2, procedure 2, starting from N-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-6-fluoro-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-benzenesulfonamide to give the final product in 41% yield.
ESI-MS [M+H]+=481.1 Calculated for C24H30ClFN2O3S=480
The synthesis was performed in analogy to example 2 (procedure 1) using butaneesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 99% yield.
ESI-MS [M+H]+=475.1 Calculated for C25H31 ClN2O3S=474
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 99% yield.
ESI-MS [M+H]+=477.1 Calculated for C25H33ClN2O3S=476
The synthesis was performed in analogy to example 2 (procedure 1) using thienylsulfonyl chloride instead of methanesulfonyl chloride to give the final product in 97% yield.
ESI-MS [M+H]+=501.0 Calculated for C25H25ClN2O3S2=500
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 81% yield.
ESI-MS [M+H]+=503.1 Calculated for C25H27ClN2O3S2=502
The synthesis was performed in analogy to example 2 (procedure 1) using 2-methoxy-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 99% yield.
ESI-MS [M+H]+=525.1 Calculated for C28H29ClN2O4S=524
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 78% yield.
ESI-MS [M+H]+=527.1 Calculated for C28H31ClN2O4S=526
The synthesis was performed in analogy to example 2 (procedure 1) using 3-methoxy-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 99% yield.
ESI-MS [M+H]+=525.1 Calculated for C28H29ClN2O4S=524
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 77% yield.
ESI-MS [M+H]+=527.1 Calculated for C28H31ClN2O4S=526
The synthesis was performed in analogy to example 2 (procedure 1) using 5-isoxazol-3-yl-thiophene-2-sulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 28% yield.
ESI-MS [M+H]+=570.1 Calculated for C28H28ClN3O4S2=569
The synthesis was performed in analogy to example 2 (procedure 1) using 2-cyano-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 27% yield.
ESI-MS [M+H]+=522.1 Calculated for C28H28ClN3O3S=521
The synthesis was performed in analogy to example 2 (procedure 1) using 4-cyano-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 32% yield.
ESI-MS [M+H]+=522.1 Calculated for C28H28ClN3O3S=521
The synthesis was performed in analogy to example 2 (procedure 1) using 2-chloro-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 28% yield.
ESI-MS [M+H]+=531.1 Calculated for C27H28Cl2N2O3S=530
The synthesis was performed in analogy to example 2 (procedure 1) using 3-chloro-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 13% yield.
ESI-MS [M+H]+=531.1 Calculated for C27H28Cl2N2O3S=530
The synthesis was performed in analogy to example 2 (procedure 1) using 4-chloro-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 50% yield.
ESI-MS [M+H]+=531.2 Calculated for C27H28Cl2N2O3S=530
The synthesis was performed in analogy to example 2 (procedure 1) using cyclopropane-sulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 36% yield.
ESI-MS [M+H]+=461.1 Calculated for C24H29ClN2O3S=460
The synthesis was performed in analogy to example 2 (procedure 1) using 6-chloro-pyridine sulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 34% yield.
ESI-MS [M+H]+=532.1 Calculated for C26H27Cl2N3O3S=531
The synthesis was performed in analogy to example 2 (procedure 1) using quinoline-8-sulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 42% yield.
ESI-MS [M+H]+=548.1 Calculated for C30H30ClN3O3S=547
The synthesis was performed in analogy to example 2 (procedure 1) using 4-methoxy-benzenesulfonyl chloride instead of methanesulfonyl chloride to give the final product in 99% yield.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 50% yield.
ESI-MS [M+H]+=527.1 Calculated for C28H31 ClN2O4S=526
The synthesis was performed in analogy to example 2 (procedure 1) using phenyl-methanesulfonyl chloride instead of methanesulfonyl chloride to give the final product.
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 34% yield.
ESI-MS [M+H]+=511.1 Calculated for C28H31ClN2O3S=510
2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethanamine (example 1, 100 mg, 0.28 mmol) was dissolved in dichloromethane (2 ml) and 1-propyl isocyanate (33.5 mg, 0.39 mmol) was added. The mixture was stirred for 30 min and then the solvent was reduced. After addition of ethylacetate and isopropanol the product precipitated as colourless solid (120 mg, 0.27 mmol, 97%).
ESI-MS [M+H]+=440.2 Calculated for C25H30ClN3O2=439
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 70% yield.
ESI-MS [M+H]+=442.2 Calculated for C25H32ClN3O2=441
The synthesis was performed according to example 33 without further purification of the intermediate 1-(2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-3-phenyl-urea. The final product was isolated as a white solid (48.0 mg, 90.0 mmol, 48%).
ESI-MS [M+H]+=476.2 Calculated for C28H30ClN3O2=475
The synthesis was performed according to example 2 without further purification of the intermediate 1,3-dimethyl-1H-pyrazole-4-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide. The final product was isolated as a white solid (36.0 mg, 0.07 mmol, 23%).
ESI-MS [M+H]+=515.2 Calculated for C26H31ClN4O3S=514
The synthesis was performed according to example 33 without further purification of the intermediate 1-(2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-3-isopropyl-urea. The final product was isolated as a white solid (54.0 mg, 0.11 mmol, 57%).
ESI-MS [M+H]+=442.2 Calculated for C25H32ClN3O2=441
The synthesis was performed according to example 2 without further purification of the intermediate 1-methyl-1H-pyrazole-4-sulfonic acid (2-{1-[1(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide. The final product was isolated as a white solid (21.0 mg, 0.04 mmol, 14%).
ESI-MS [M+H]+=501.2 Calculated for C25H29ClN4O3S=500
The synthesis was performed according to example 2 without further purification of the intermediate propane-2-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide. The final product was isolated as a white solid (14.0 mg, 0.03 mmol, 7%).
ESI-MS [M+H]+=463.2 Calculated for C24H31ClN2O3S=462
The synthesis was performed according to example 33 (procedure 1), starting from butane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide hydrochloride (example 16) and ethyl isocyanate instead of 1-propyl isocyanate. The product was obtained as a white solid (16.0 mg, 0.03 mmol, 23%).
ESI-MS [M+H]+=548.2 Calculated for C28H38ClN3O4S=547
Butane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide hydrochloride (example 16, 50.0 mg, 0.10 mmol) is dissolved in acetone (3 ml) and potassium carbonate (29.0 mg, 0.21 mmol) and methyl iodide (16.4 mg, 0.12 mmol) were added. The mixture was stirred at RT for 14 h. The sol-vent was reduced, the reaction mixture was diluted with 1 N sodium hydroxid solution and extracted with dichloromethane. The combined organic layers were washed with saturated sodium chloride solution and dried with potassium sulphate. The residue was purified by HPLC with . . . to give the product (50.0 mg, 0.10 mmol, 13%).
ESI-MS [M+H]+=491 Calculated for C26H35ClN2O3S=490
The synthesis was performed in analogy to example 82, procedure a, starting from 4-(2-amino-ethyl)-phenylamine to give the final product as a white solid in 86% yield.
The synthesis followed a procedure described in heterocycles 31(2), 1990, 341-345, using 1-(4-chloro-phenyl)-cyclobutanecarboxylic acid [2-(4-amino-phenyl)-ethyl]-amide as the starting material to give the final product as a white solid (8.60 g, 21.5 mmol, 86%).
The synthesis was performed in analogy to example 82, procedure b, starting from [4-(2-{[1-(4-chloro-phenyl)-cyclobutanecarbonyl]-amino}-ethyl)-phenyl]-carbamic acid ethyl ester to give the final product in 21% yield.
ESI-MS [M+H]+=383.1 Calculated for C22H23ClN2O2=382
{1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yl}-carbamic acid ethyl ester (400 mg, 1.04 mmol) in a solution of potassium hydroxid in ethanol (20 ml, 10%) are stirred for 5 h under reflux. The solvent was reduced, the reaction mixture was diluted with water and extracted with ethyl acetate. The combined organic layers were washed with saturated sodium chloride solution and dried with sodium sulphate to give the final product (0.32 mg, 1.04 mmol, 99%) as an orange solid that was used without further purification.
1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-ylamine (480 mg, 1.54 mmol), N,N-bis-(2-chloro-ethyl)-4-methyl-benzenesulfonamide (510 mg, 1.72 mmol), cesium carbonate (503 mg, 1.54 mmol) in water (5 ml) and acetonitrile (2 ml) was stirred in a micro-wave oven at 130° C. for 3 h. The solvent was reduced, the reaction mixture was diluted with 1 N sodium hydroxid solution and extracted with ethyl acetate. The combined organic layers were washed with saturated sodium chloride solution and dried with sodium sulphate. The residue was purified by flash column chromatography on silica with cyclohexane/ethyl acetate 7:3->1:1. The product was obtained as a brown oil (400 mg, 0.75 mmol, 48%) that was sufficiently pure for the next step.
1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-ylamine (400 mg, 0.75 mmol) was dissolved in HBr/acetic acid (10 ml, 33%) and stirred for 3 h at 70° C. Another 10 ml of the HBr/acetic acid solution was added and the mixture was stirred for another 8 h at 70° C. The solvent was diluted with 1 N sodium hydroxid solution and extracted with dichloromethane. The combined organic layers were washed with saturated sodium chloride solution and dried with sodium sulphate. The residue was purified by flash column chromatography on silica with dichloromethane/methanol 98:2->95:5. The product was obtained as a brown oil (100 mg, 0.26 mmol, 35%) that was sufficiently pure for the next step.
The synthesis was performed according to example 2 without further purification of the intermediate 1-[1-(4-chloro-phenyl)-cyclobutyl]-7-(4-ethanesulfonylpiperazin-1-yl)-3,4-dihydro-isoquinoline. The final product was isolated as a brown solid (30.0 mg, 0.06 mmol, 37%).
ESI-MS [M+H]+=474.1 Calculated for C25H32ClN3O2S=473
The synthesis was performed according to example 33 without further purification of the intermediate 1-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-3-pyridin-3-yl-urea. The final product was isolated as a white solid (25.0 mg, 0.05 mmol, 25%).
ESI-MS [M+H]+=477.2 Calculated for C27H29ClN4O2=476
Sodium hydride in paraffin (6.00 g, 24.0 mmol, 55%) was washed with n-hexane, dried, and suspended in N,N-dimethyl-acetamide (50 ml). (4-Chloro-phenyl)-acetonitrile (10.0 g, 66.0 mmol) in N,N-dimethyl-acetamide (50 ml) was added dropwise under exothermic conditions and bubbling. After stirring for 30 min the solution became dark brown and then 1,3-dibromo-2,2-dimethoxy-propane was added in portions and the mixture was stirred over night at RT and then for another 30 min at 65° C. The black reaction mixture was diluted with HCl (16%) and extracted with ethyl acetate. The combined organic layers were washed with water and subsequently with saturated sodium chloride solution and dried with sodium sulphate. The residue was purified by flash column chromatography on silica with cyclohexane/ethyl acetate 95:5. The product was obtained as a brown oil (8.80 g, 40.1 mmol, 61%) that was directly used for the next step.
ESI-MS [M+H]+=220.1 Calculated for C12H10ClNO=219
1-(4-Chloro-phenyl)-3-methoxy-cyclobut-2-enecarbonitrile (8.80 g, 40.1 mmol), 4-toluene sulfonic acid (2.30 g, 12.1 mmol), and 2 N HCl were dissolved in acetone/water 100:10 (110 ml) and stirred for 10 h under reflux. The reaction mixture was alkalized with aqueous NaOH and extracted with ethyl acetate. The combined organic layers were washed with water and subsequently with saturated sodium chloride solution and dried with sodium sulphate. The product was obtained as an orange oil (7.40 g, 36.0 mmol) that was sufficiently pure for the next step.
ESI-MS [M+H]+=206.1 Calculated for C11H8ClNO=205
1-(4-Chloro-phenyl)-3-oxo-cyclobutanecarbonitrile (7.00 g, 34.0 mmol) is dissolved at 0° C. in dichloromethane (200 ml) and diethylaminosulfur trifluoride (11.0 g, 68.12 mmol) at 0° C. The mixture was allowed to warm up to RT and the stirred for another 14 h. Water was added and the mixture was alkalized with aqueous NaOH and extracted with ethyl acetate. The combined organic layers were washed with water and subsequently with saturated sodium chloride solution and dried with sodium sulphate. The residue was purified by flash column chromatography on silica with cyclohexane/ethyl acetate 8:2->6:4. The product was obtained as an orange oil (4.30 g, 18.9 mmol, 55%) that was directly used for the next step.
1-(4-Chloro-phenyl)-3-oxo-cyclobutanecarbonitrile (4.30 g, 18.9 mmol) is dissolved in aqueous HCl (10 M, 80.0 ml) and stirred for 6 h under reflux. The mixture was extracted with dichloromethane. The combined organic layers were extracted with 2N NaOH. The alkaline layer was acidified with HCl and extracted with dichloromethane. The combined organic layers were dried with sodium sulphate, filtered, and the solvent was removed to obtain a yellow solid (2.70 g, 11.0 mmol, 58%).
The synthesis was performed in analogy to example 82, procedure a, starting from 1-(4-chloro-phenyl)-3,3-difluoro-cyclobutanecarboxylic acid to give the final product as a white solid in 82% yield.
ESI-MS [M+H]+=380.1 Calculated for C20H20ClF2NO2=379
The synthesis was performed in analogy to example 82, procedure b, starting from 1-(4-chloro-phenyl)-3,3-difluoro-cyclobutanecarboxylic acid [2-(4-meth oxy-phenyl)-ethyl]-amide to give the final product as a colourless oil in 26% yield.
The synthesis was performed in analogy to example 82, procedure c, starting from 1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-7-methoxy-3,4-dihydro-isoquinoline to give the final product as a white solid in 89% yield.
ESI-MS [M+H]+=348.1 Calculated for C19H16ClF2NO=347
The synthesis was performed in analogy to example 1, procedure 1, starting from 1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-3,4-dihydro-isoquinolin-7-ol to give the final product in 37% yield.
ESI-MS [M+H]+=348.0 Calculated for C26H29ClF2N2O3=347
The synthesis was performed in analogy to example 1, procedure 2, starting from (2-{1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-carbamic acid tert-butyl ester to give the final product in 75% yield.
ESI-MS [M+H]+=391.1 Calculated for C21H21ClF2N2O=390
The synthesis was performed according to example 2 starting from 2-{1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethylamine without further purification of the intermediate 1-methyl-1H-pyrazole-4-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide. The final product was isolated as a white solid (130 mg, 0.333 mmol, 61%).
ESI-MS [M+H]+=537.1 Calculated for C25H27ClP2N4O3S=536
The synthesis was performed according to example 2 starting from 1-methyl-1H-pyrazole-4-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide without further purification of the intermediate propane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-3,3-difluoro-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide. The final product was isolated as a white solid (55.0 mg, 0.103 mmol, 67%).
ESI-MS [M+H]+=499.1 Calculated for C24H29ClP2N2O3S=498
The synthesis was performed in analogy to example 2 (procedure 3) starting from propane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide (example 4) and using propanesulfonyl chloride instead of methane-sulfonyl chloride to give the final product in 51% yield.
ESI-MS [M+H]+=610 Calculated for C29H40ClN3O5S2=609
The synthesis was performed in analogy to example 1, procedure 4, to give the final product in 56% yield.
ESI-MS [M+H]+=612.2 Calculated for C29H42ClN3O5S2=611
Propane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide hydrochloride (example 4, 95.0 mg, 0.19 mmol) was dissolved in 1-butanol (10 ml) and sodium dicyanamide (42.3 mg, 0.48 mmol) was added.
The reaction mixture was stirred under reflux. After 4 h, the solvent was removed and dichloromethane was added. The resulting precipitate was removed by filtration and purified by flash column chromatography on silica with dichloromethane/methanol 10:0->94:6. The product was obtained as a solid (30.0 mg, 0.06 mmol, 30.0%).
ESI-MS [M+H]+=530 Calculated for C26H32ClN5O3S=529
Propane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yloxy}-ethyl)-amide hydrochloride (example 4, 100 mg, 0.216 mmol) and 2-methylisothiouronium sulphate (180 mg, 648 mmol) were dissolved in water/2-propanole 5:1 (2.4 ml) and stirred in microwave oven at 150° C. and 10 bar for 45 min. Another 90 mg (324 mmol) were added and the mixture was stirred for 20 min. Another 90 mg (324 mmol) were added and the mixture was stirred for 30 min. The solvent was reduced and the mixture was extracted with dichloromethane. The combined organic layers were dried with sodium sulphate, filtered, and the solvent was removed. The residue was purified by HPLC (RP-18, water/MeOH) to obtain the product as a solid (98.0 mg, 0.194 mmol, 90.0%).
ESI-MS [M+H]+=506.2 Calculated for C25H33ClN4O3S=504
1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (example 82) (400 mg, 1.18 mmol) and 4-(2-chloro-acetyl)-piperazine-1-carboxylic acid tert-butyl ester (404 mg, 1.54 mmol) were dissolved in N,N-dimethyl-formamide (10 ml). After addition of potassium carbonate (355 mg, 2.57 mmol) the mixture was stirred for 2 h under reflux. The solvent was removed and the residue (690 mg) was used in the next step without further purification.
4-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-acetyl)-piperazine-1-carboxylic acid tert-butyl ester (690 mg, 1.28 mmol) was dissolved in dichloro-methane. A 5 M solution of HCl in 2-propanol (5 mol) was added and the mixture was stirred for 14 h at RT. The solvent was removed and the residue (230 mg) was used in the next step without further purification.
The reaction was performed according to example 1 (procedure 4) starting from 2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-1-piperazin-1-yl-ethanone and the product was obtained as a white solid (17.0 mg, 16%).
ESI-MS [M+H]+=440.2 Calculated for C25H30ClN3O2=439
The synthesis was performed in analogy to example 4 and the product was obtained as a white solid.
ESI-MS [M+H]+=463 Calculated for C24H31ClN2O3=462
1-(1-(4-Chlorophenyl)cyclobutyl)-7-(2-(propylsulfonamido)ethoxy)-1,2,3,4-tetrahydroisoquinolinium chloride (187 mg, 0.374 mmol, example 4), triethylamine (91 mg, 0.897 mmol), Pd/C (11.95 mg, 0.011 mmol) were suspended in dry MeOH (5 ml) and treated with hydrogen gas at ambient pressure for 14 h. The solvent was removed and the residue was purified by column chromatography using silica gel dichloromethane/methanol (97:3->95:5) as the eluent. The product was transferred into the hydrochloride with isopropylether and HCl dissolved in isopropanol (6%). The product was obtained as a white powder (68.0 mg, 0.146 mmol, 39%.)
ESI-MS [M+H]+=429.2 Calculated for C24H32N2O3S=428
The synthesis was performed according to example 2 without further purification of the intermediate 2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethylamine. The final product was isolated as a colourless oil (106 mg, 0.197 mmol).
ESI-MS [M+H]+=501.2 Calculated for C25H30ClN4O3S=501
The synthesis was performed according to example 2 without further purification of the intermediate 1,2-dimethyl-1H-imidazole-4-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethyl)-amide. The final product was isolated as a white solid (35.0 mg, 0.063 mmol, 32%).
ESI-MS [M+H]+=515.2 Calculated for C26H31ClN4O3S=514
The synthesis was performed according to example 2 (procedure 1). The final product was isolated as a white solid (729 mg, 0.887 mmol, 70%).
ESI-MS [M+H]+=575.2 Calculated for C28H35ClN4O5S=574
The synthesis was performed according to example 2 (procedure 2). The final product was isolated as a white solid (20.0 mg, 0.033 mmol, 38%).
ESI-MS [M+H]+=577.2 Calculated for C28H37ClN4O5S=576
4-(2-{1-[1-(4-Chloro-phenyl)-cyclobutyl]-3,4-dihydro-isoquinolin-7-yloxy}-ethylsulfamoyl)-piperazine-1-carboxylic acid ethyl ester (450 mg, 0.782 mmol, example 54, procedure 1) and a 10% solution of potassium hydroxid in ethanol (20 ml) were heated under reflux for 15 h. The solvent was reduced and water was added to the residue. The mixture was extracted with dichloromethane. The combined organic layers were washed with sodium chloride, dried with potassium sulphate and evaporated. The residue was purified by column chromatography with silica gel using dichloromethane/methanol 3%->5% as the eluent to give the desired product as a yellow oil (394 mg, 0.782 mmol, 61%).
ESI-MS [M+H]+=503.2 Calculated for C25H31ClN4O3S=502
The synthesis was performed according to example 2 (procedure 2). The final product was isolated as a white solid (35.0 mg, 0.060 mmol, 73%).
ESI-MS [M+H]+=505.2 Calculated for C25H33ClN4O3S=504
The synthesis was performed according to example 2 (procedure 2) starting from N-(2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethyl)piperazine-1-sulfonamide (example 55, procedure 1). The final product was isolated as a white solid (35.0 mg, 0.054 mmol, 39%).
ESI-MS [M+H]+=611.2 Calculated for C28H39ClN4O5S2=610
The synthesis was performed according to example 2 without further purification of the intermediate N-(2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethyl)-1H-imidazole-4-sulfonamide. The final product was isolated as a white solid (221 mg, 0.423 mmol, 52%).
ESI-MS [M+H]+=487.2 Calculated for C24H27ClN4O3S=486
The synthesis was performed according to example 2 (procedure 1). The final product was isolated as a white solid (598 mg, 1.13 mmol, 92%).
ESI-MS [M+H]+=530.1 Calculated for C26H25Cl2N3O3S=529
6-Chloro-N-(2-(1-(1-(4-chlorophenyl)cyclobutyl)-3,4-dihydroisoquinolin-7-yloxy)ethyl)pyridine-3-sulfonamide (70.0 mg, 0.132 mmol) and benzylamine (14.2 mg, 0.133 mmol) were dissolved in dry ethanol (3 ml) and stirred in a microwave oven at 150° C. for 1 h. The solvent was reduced under vacuo and the residue was purified by column chromatography using silica gel and heptan/ethyl acetate (3:7->7:3) as the eluent. The product was obtained as a white solid (79 mg, 0.132 mmol, 20%).
ESI-MS [M+H]+=601.2 Calculated for C33H33ClN4O3S=600
The synthesis was performed according to example 2 (procedure 2). The final product was isolated as a white solid (17.0 mg, 0.023 mmol, 88%).
ESI-MS [M+H]+=603.3 Calculated for C33H35ClN4O3S=602
The synthesis was performed according to example 29 starting from 6-Chloro-pyridine-3-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide hydrochloride. The final product was isolated as a white solid (55 mg, 0.097 mmol, 64%).
ESI-MS [M+H]+=555.3 Calculated for C29H35ClN4O3S=554
The synthesis was performed according to example 12 to yield the final product as a yellow powder (53 mg, 0.106 mmol, 47%).
ESI-MS [M+H]+=465.2 Calculated for C24H33ClN2O3S=464
N-(2-(1-(1-(4-chlorophenyl)cyclobutyl)-1,2,3,4-tetrahydroisoquinolin-7-yloxy)ethyl)pyridine-3-sulfonamide (110 mg, 0.221 mmol, example 10) and a 6 molar solution of HCl in 2-propanol were dissolved in methanol (10 ml) and treated in an hydrogenation flow reactor (H-Cube®, Platinium (IV) oxide cartridge THS02119, ThalesNano) at 30 bar and 30° C. with a flow of 0.5 mV min under circulating conditions for 14 h. The final product was purified by HPLC using . . . to yield the final product as a white powder (25.0 mg, 0.043 mmol, 20%).
ESI-MS [M+H]+=504.2 Calculated for C26H34ClN3O3S=503
The synthesis was performed according to example 2 to yield the final product as a white powder (108 mg, 0.20 mmol, 91%).
ESI-MS [M+H]+=497 Calculated for C27H29ClN2O3S=496
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-6-yl}oxy)ethyl]propane-2-sulfonamide hydrochloride was prepared analogously to example 68 using propane-2-sulfonyl chloride in place of propane-1-sulfonyl chloride.
ESI-MS [M+H]+=463 Calculated for C24H31ClN2O3S=462.
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-6-yl}oxy)ethyl]pyridine-3-sulfonamide dihydrochloride was prepared analogously to example 68 using pyridine-2-sulfonyl chloride in place of propane-1-sulfonyl chloride.
ESI-MS [M+H]+=498 Calculated for C26H28ClN3O3S=497.
The compound was prepared analogously to 1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (cf. example 82) starting from 1-(4-fluorophenyl)cyclobutanecarboxylic acid.
Sodium hydride (0.626 g, 15.64 mmol, 60% suspension in mineral oil) was washed under dry conditions under nitrogen atmosphere with n-hexane. Dimethylformamide (20 mL) was added followed by 1-[1-(4-fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (2.1 g, 7.11 mmol) under stirring. After the exothermic reaction had ceased stirring was continued at room temperature for 1 h before tert-butyl (2-bromoethyl)carbamate (4.78 g, 21.33 mmol) was added dropwise as a solution in dimethylformamide (10 mL). The reaction mixture was stirred at room temperature over night. The solvent was evaporated in vacuo. Ice water was added (60 mL) and the aqueous phase was extracted with ethyl acetate. The combined organic layers were dried (MgSO4) and the solvent was evaporated in vacuo.
The crude product was purified by flash chromatography (silica, dichloromethane:methanol=100:1). Yield: 2.5 g (5.7 mmol, 36%).
tert-Butyl [2-({1-[1-(4-fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]carbamate (2.5 g, 5.7 mmol) was dissolved in dichloromethane (30 mL) and 5N hydrochloric acid in isopropanol (20 mL) was added. After stirring over night at room temperature the solvent was evaporated in vacuo. Water (30 mL) was added and the aqueous phase was neutralized with saturated aqueous NaHCO3 and extracted with dichloromethane. The combined organic layers were washed with brine (20 mL), dried (MgSO4) and concentrated in vacuo. The crude product (1.76 g) was used without purification for the next step.
2-({1-[1-(4-Fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine (298 mg, 0.88 mmol) was dissolved in dichloromethane (10 mL) and N,N-dimethylpyridin-4-amine (118 mg, 0.97 mmol) was added. After dropwise addition of a solution of propane-1-sulfonyl chloride (138 mg, 0.97 mmol) in dichloromethane (2 mL) stirring was continued over night. The reaction mixture was diluted with dichloromethane (20 mL), washed with an aqueous ammonium chloride solution (30 mL). The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, ethyl acetate:dichloromethane=1:10). Yield: 200 mg (0.45 mmol, 51%).
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (180 mg, 0.4 mmol) was dissolved in methanol (4 mL) and water (0.1 mL) and sodiumborohydride (30.6 mg, 0.81 mmol) was added in small portions under stirring at room temperature. Stirring was continued over night. The solvent was evaporated in vacuo. The residue was treated with dichloromethane. The organic layer was washed with saturated aqueous NaHCO3 (2×10 mL) and water (1×10 mL). After drying (MgSO4) and evaporation of the solvent in vacuo the product was treated with 2N hydrochloric acid in diethylether. The diethylether was removed by destillation and the product was dried in vacuo. Yield: 153 mg (0.34 mmol, 85%, colorless solid).
ESI-MS [M+H+]=447 Calculated for C24H31FN2O3S=446.
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]pyridine-3-sulfonamide hydrochloride was prepared analogously to example 65 using pyridine-3-sulfonyl chloride in place of propane-1-sulfonyl chloride.
ESI-MS [M+H+]=482 Calculated for C26H28FN3O3S=481.
To a suspension of sodium tert-butylate (21.54 g, 217.4 mmol) in dimethylformamide (37 mL) and tetrahydrofuran (37 mL) was added (4-methoxyphenyl)acetonitrile (8.00 g, 54.36 mmol) at 5° C. At the same temperature methyl iodide (13.54 mL) was added dropwise resulting in the formation of a light brown solid. The reaction mixture was diluted with dimethylformamide (15 mL) and tetrahydrofuran (15 mL). Stirring was continued at 10° C. for 1.5 h. The reaction mixture was cooled in a ice bath and 2N aqueous hydrochloric acid (100 mL) was added. The reaction mixture was extracted with ethyl acetate (3×100 mL). The combined extracts were washed with aqueous saturated NaHCO3 solution (2×50 mL) and brine (50 mL). The extracts were dried (MgSO4) and the solvent was evaporated in vacuo. The crude product was purified by flash chromatography (silica, n-heptane:dichloromethane=1:1). Yield: 7.6 g (43.4 mmol, 79.8%).
A reaction vessel was charged with lithiumaluminium hydride (0.433 g, 11.41 mmol) and dry diethyl ether (20 mL). After cooling to 5° C. a solution of 2-(4-methoxyphenyl)-2-methylpropanenitrile (2.00 g, 11.41 mmol) in dry diethylether (10 mL) was added dropwise. The reaction mixture was stirred at 5° C. for 2 h. The reaction mixture was then cooled in an ice bath and 2N aqueous sodium hydroxide solution (0.8 mL) and water (1.5 mL) were added. After stirring for 20 min additional water (40 mL) was added and the reaction mixture was extracted with ethyl acetate (2×30 mL). The combined extracts were dried (MgSO4) and the solvent was evaporated in vacuo. The crude product (1.94 g, 10.82 mmol) was used without further purification for the next step.
2-({1-[1-(4-Chlorophenyl)cyclobutyl]-4,4-dimethyl-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine was prepared analogously to 2-({1-[1-(4-fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine (cf. example 65) using 2-(4-methoxyphenyl)-2-methylpropan-1-amine and 1-(4-chlorophenyl)cyclobutanecarboxylic acid in place of 2-(4-methoxyphenyl)ethanamine and 1-(4-fluorophenyl)cyclobutanecarboxylic acid, respectively.
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-4,4-dimethyl-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride was prepared analogously to N-[2-({1-[1-(4-fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride (cf. example 65) using 2-({1-[1-(4-chlorophenyl)cyclobutyl]-4,4-dimethyl-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine in place of 2-({1-[1-(4-fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine.
ESI-MS [M+H+]=491 Calculated for C26H35ClN2O3S=490.
1-[1-(4-Chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-6-ol was prepared analogously to 1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (cf. example 82) using 2-(3-methoxyphenyl)ethanamine in place of 2-(4-methoxyphenyl)ethanamine.
2-({1-[1-(4-Chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-6-yl}oxy)ethanamine was prepared analogously to 2-{1-[1-(4-fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine using 1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-6-ol in place of 1-[1-(4-fluorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (cf. example 65).
2-({1-[1-(4-Chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-6-yl}oxy)ethanamine (0.40 g, 0.90 mmol) was dissolved in dichloromethane (8 mL) and propane-1-sulfonyl chloride (0.169 g, 1.18 mmol) and N,N-dimethylpyridin-4-amine (0.152 g, 1.24 mmol) were added. The reaction mixture was stirred at room temperature over night. Water was added and the aqueous phase was extracted several time with dichloromethane. The combined organic layers were dried (Na2SO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane:methanol=99:1). Yield: 0.35 g (0.68 mmol, 76%, colorless oil).
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-6-yl}oxy)ethyl]propane-1-sulfonamide (320 mg, 0.62 mmol) was dissolved in methanol (5 mL) and water (0.1 mL) and sodiumborohydride (47 mg, 1.25 mmol) was added at 4° C. in small portions. The reaction mixture was allowed to warm to room temperature and stirring was continued over night. The solvent was evaporated in vacuo, the residue was treated with dichloromethane and water. The aqueous layer was extracted several times with dichloromethane. The combined organic layers were dried (Na2SO4) and concentrated in vacuo. The crude product was purified by preparative HPLC (RP, acetonitrile, water). The purified amine was then converted into the corresponding hydrochloric acid salt by adding 5M isoporpanolic hydrochloric acid followed by concentration in vacuo. Yield: 35 mg (0.07 mmol, 11%, colorless solid).
ESI-MS [M+H+]=463 Calculated for C24H31ClN2O3S=462.
2-({1-[1-(4-Chlorophenyl)cyclobutyl]-4,4-dimethyl-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine (145 mg, 0.38 mmol, cf. example 67) was dissolved in dry dichloromethane (8 mL). Triethylamine (60 μL, 0.45 mmol). The solution was cooled to 0-5° C. and diethylsulfamoyl chloride (71.5 mg, 0.42 mmol) was added. The reaction mixture was stirred at room temperature over night. The reaction mixture was diluted with dichloromethane (20 mL) and washed with a 1:1 mixture of water and saturated ammonium chloride solution (20 mL). The organic layer was dried (MgSO4) and the solvent was evaporated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane then dichloromethane:ethyl acetate=180:5). Yield: 96 mg (0.19 mmol, 48.9%).
N′-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-4,4-dimethyl-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]-N,N-diethylsulfuric diamide hydrochloride was prepared analogously to example 65 using N′-[2-({1-[1-(4-chlorophenyl)cyclobutyl]-4,4-dimethyl-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]-N,N-diethylsulfuric diamide (68 mg, 0.13 mmol) and sodiumborohydride (10 mg, 0.26 mmol). Yield: 60 mg (0.11 mmol, 82%, colorless foam).
ESI-MS [M+H+]=520 Calculated for C27H38ClN3O3S=519.
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride (135 mg, 0.30 mmol, cf. example 65) was dissolved in dichloromethane (9 mL). Triethylamine (92 mg, 0.91 mmol) and trifluoroacetic acid anhydride (95 mg, 0.45 mmol) were added. The reaction mixture was stirred at room temperature until TLC indicated complete conversion of the starting material. Aqueous saturated NaHCO3 solution (12 mL) and water (20 mL) was added. After stirring at room temperature for 15 min the layers were separated and the aqueous layer was extracted several times with dichloromethane. The combined organic layers were dried (Na2SO4), concentrated in vacuo and the crude product was purified by flash chromatographie (silica, dichloromethane then dichloromethane:ethyl acetate=20:1). Yield: 80 mg (0.15 mmol, 49%).
ESI-MS [M+H+]=543 Calculated for C26H30F4N2S4=542.
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-2-(trifluoroacetyl)-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (49 mg, 0.09 mmol) was dissolved in dry tetrahydrofuran (0.6 mL) under an atmosphere of nitrogen. The solution was cooled to 0° C. and a 1M solution of borane in tetrahydrofuran (0.181 mL, 0.181 mmol) was added dropwise. The reaction mixture was warmed to room temperature and then heated under reflux for 2 h. The solvent was evaporated in vacuo, the residue was dissolved in dichloromethane (20 mL) and washed with water (10 mL). The organic layer was dried (MgSO4) and concentrated in vacuo. The product was dissolved in dichloromethane (2 mL) and treated with 5N isopropanolic hydrochloric acid (27 μL, 0.135 mmol). The solvents were evaporated and the product was dried in vacuo. Yield: 45 mg (0.08 mmol, 88%).
ESI-MS [M+H+]=529 Calculated for C26H32F4N2O3S=528.
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (100 mg, 0.224 mmol, cf. example 65) and dibenzyl [(methylsulfanyl)methylylidene]biscarbamate (104 mg, 0.291 mmol) were dissolved in dry dimethylformamide (1 mL). Triethylamine (0.094 mL, 0.672 mmol) was added followed by silver trifluoromethanesulfonate (81 mg, 0.313 mmol). A yellow precipitate was formed and the reaction mixture turned dark brown. Stirring was continued at room temperature for 3 h. The solvent was evaporated in vacuo. Dichloromethane (15 mL) was added, the solid was removed by filtration and washed with dichloromethane. The combined dichloromethane phases were concentrated in vacuo and the crude product was purified by flash chromatography (silica, dichloromethane then dichlorometane:methanol=100:1). Yield: 100 mg (0.132 mmol, 59%).
Dibenzyl [(E)-{1-[1-(4-fluorophenyl)cyclobutyl]-7-{2-[(propylsulfonyl)amino]ethoxy}-3,4-dihydroisoquinolin-2(1H)-yl}methylylidene]biscarbamate (95 mg, 0.126 mmol) was dissolved in methanol (8 mL) under an atmosphere of nitrogen. Acetic acid (0.4 mL) was added followed by 10% palladium on charcoal (40 mg, 0.038 mmol). The nitrogen was replaced by one atmosphere of hydrogen and the reaction mixture was stirred at room temperature for 3 h. The catalyst was removed by filtration and the solution of the product was concentrated in vacuo. The product was dissolved in ethanol (0.5 mL) and water (15 mL) and was lyophilized. Yield: 61 mg (0.125 mmol, 99%).
ESI-MS [M+H+]=489 Calculated for C25H33FN4O3S=488.
N-[2-({5-Bromo-1-[1-(4-fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-8-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride was prepared analogously to N-[2-({1-[1-(4-fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride (cf. example 65) using 2-(2-bromo-5-methoxyphenyl)ethanamine in place of 2-(4-methoxyphenyl)ethanamine.
ESI-MS [M+H+]=526 Calculated for C24H30BrFN2O3S=525.
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-2-nitroso-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide
N-[2-({1-[1-(4-Fluorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (92 mg, 0.206 mmol, cf. example 65) was dissolved in tetrahydrofuran (1 mL) under an atmosphere of nitrogen. Tert-butyl nitrite (32 mg, 0.309 mmol) were added and the reaction mixture was stirred under reflux for 3 h. After that time additional tert-butyl nitrite (32 mg, 0.309 mmol) was added and stirring under reflux was continued for 2 h. The solvent was evaporated in vacuo and the crude product was purified by flash chromatography (silica, dichloromethane then dichloromethane:methanol=100:1). Yield: 56 mg (0.118 mmol, 57%).
ESI-MS [M+H+]=476 Calculated for C24H30FN3O4S=475.
A reaction vessel was charged with lithiumaluminium hydride (23.5 mg, 0.618 mmol) and dry tetrahydrofuran (1 mL). N-[2-({1-[1-(4-fluorophenyl)cyclobutyl]-2-nitroso-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (49 mg, 0.103 mmol, cf. example 75) was added dropwise as a solution in dry tetrahydrofuran (1 mL) at 0° C. After the addition was completed the reaction mixture was stirred at room temperature for 1 h and then at 40-50° C. for 1 h. After cooling to room temperature the reaction mixture was poured on ice water (15 mL) and the aqueous phase was extracted with ethyl acetate (3×10 mL). The combined extracts were dried (MgSO4) and concentrated in vacuo. The crude product was purified by preparative HPLC (RP, acetonitrile, water). Yield: 1 mg (2.2 μmol, 2%).
ESI-MS [M+H+]=462 Calculated for C24H32FN3O3S=461.
1-(4-Chloro-2-methoxyphenyl)cyclobutanecarbonitrile can be prepared analogously to procedure described in Organic Letters (2006), 8(17), 3745ff starting from (4-chloro-2-methoxyphenyl)acetonitrile. Alternatively sodium hydride can be used as a base and dimethylsuloxide as solvent.
1-(4-Chloro-2-methoxyphenyl)cyclobutanecarboxylic acid can be obtained by heating 1-(4-chloro-2-methoxyphenyl)cyclobutanecarbonitrile in the presence of potassium hydroxide in ethylene glycol (cf. J. Am. Chem. Soc. 1956, 78, 5413ff or Org. Synth. Coll. Vol. 4, 1963, 93ff).
N-{2-[4-(Benzyloxy)phenyl]ethyl}-1-(4-chloro-2-methoxyphenyl)cyclobutanecarboxamide was prepared analogously to example 65 from 1-(4-chloro-2-methoxyphenyl)cyclobutanecarboxylic acid (3.45 g, 14.3 mmol) and 2-[4-(benzyloxy)phenyl]ethanamine (4.2 g, 15.92 mmol). Yield: 4.7 g (10.45 mmol, 66%).
7-(Benzyloxy)-1-[1-(4-chloro-2-methoxyphenyl)cyclobutyl]-3,4-dihydroisoquinoline was prepared analogously to example 65 using N-{2-[4-(benzyloxy)phenyl]ethyl}-1-(4-chloro-2-methoxyphenyl)cyclobutanecarboxamide (1.1 g, 2.445 mmol) and phosphoric trichloride (3.75 g, 24.45 mmol). Yield: 65 mg (0.15 mmol, 6%).
7-(benzyloxy)-1-[1-(4-chloro-2-methoxyphenyl)cyclobutyl]-3,4-dihydroisoquinoline (460 mg, 1.065 mmol) were dissolved in 33% hydrobromic acid in acetic acid. The reaction mixture was stirred at room temperature for 15 min. The solvent was evaporated in vacuo. Toluene was added and evaporated in vacuo (repeated three times). The crude product was purified by flash chromatography (silica, dichloromethane then dichloromethane:methanol=4:1). Yield: 322 mg (0.942 mmol, 88%).
N-[2-({1-[1-(4-Chloro-2-methoxyphenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride was prepared analogously to example 65 starting from 1-[1-(4-chloro-2-methoxyphenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol.
ESI-MS [M+H+]=493 Calculated for C25H33ClN2O4S=492.
N-[2-({1-[1-(3-Chlorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (70 mg, 0.14 mmol, cf. example 49) was dissolved in dry dichloromethane (0.5 mL). Triethylamine (35.5 mg, 0.35 mmol) was added and the reaction mixture was stirred at room temperature for 30 min. After addition of 2-bromoacetonitrile (20 mg, 0.168 mmol) stirring at room temperature was continued over night. The reaction mixture was diluted with dichloromethane and washed with aqueous saturated NaHCO3 solution (5 mL) and water (5 mL). The organic phase was dried (MgSO4) and the solvent was evaporated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane then dichloromethane:methanol=200:1). Yield: 35 mg (0.07 mmol, 50%).
ESI-MS [M+H+]=502 Calculated for C26H32ClN3O3S=501.
A reaction vessel was charged with lithiumaluminium hydride (3.3 mg, 0.087 mmol) and dry diethyl ether (3.5 mL). At −5° C. a solution of N-[2-({1-[1-(3-chlorophenyl)cyclobutyl]-2-(cyanomethyl)-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (29 mg, 0.058 mmol) in dry diethyl ether (0.5 mL) was added dropwise. After stirring at −5° C. for 1 h another portion of lithiumaluminium hydride (3.3 mg, 0.087 mmol) was added. The reaction mixture was allowed warm to room temperature and stirring was continued for 5 h. 2N aqueous sodium hydroxide solution (10 mL) was added dropwise. After stirring for 10 min the reaction mixture was diluted with water (5 mL) and extracted with ethyl acetate (2×15 mL). The combined extracts were dried (MgSO4) and the solvent was evaporated in vacuo. The crude product was purified by preparative HPLC (RP, acetonitrile, water). Yield: 12 mg (0.016 mmol, 28%).
ESI-MS [M+H+]=506 Calculated for C26H36ClN3O3S=505.
1-[1-(4-Fluorophenyl)cyclobutyl]-7-{2-[(propylsulfonyl)amino]ethoxy}-3,4-dihydroisoquinoline-2(1H)-carboximidamide acetate (140 mg, 0.255 mmol, cf. example 72) was suspended in ethanol (2 mL). Sodium methylate (138 mg, 0.142 mmol) and 2-bromo-1,1-dimethoxyethane (65 mg, 0.383 mmol) were added. The reaction mixture was stirred at 120° C. in the microwave (80 W) for 80 min. The solvent was evaporated in vacuo and the crude product was used without further purification for the next step.
The crude N-(2,2-dimethoxyethyl)-1-[1-(4-fluorophenyl)cyclobutyl]-7-{2-[(propylsulfonyl)amino]ethoxy}-3,4-dihydroisoquinoline-2(1H)-carboximidamide (see above) was dissolved in acetonitrile (5 mL). Concentrated aqueous hydrochloric acid was added until the reaction mixture remained at pH 1. After stirring at room temperature over night the solvent was evaporated in vacuo. Water (10 mL) was added and the mixture was neutralized with aqueous saturated NaHCO3 solution. The mixture was extracted with dichloromethane (2×10 mL). The combined organic layers were dried (MgSO4) and the solvent was evaporated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane then dichloromethane:methanol=80:1). Yield: 2.8 mg (5.5 μmol, 2%).
ESI-MS [M+H+]=513 Calculated for C27H33FN4O3S=512.
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (80 mg, 0.173 mmol, cf. example 4) was dissolved in dimethylformamide (2 mL). Triethylamine (70 mg, 0.414 mmol) and 2-bromoacetonitrile (50 mg, 0.414 mmol) were added and the reaction mixture was heated in the microwave at 120° C. for 20 min (100 W). The solvent was evaporated in vacuo, the crude product was diluted with dichloromethane (10 mL) and washed with water (2×10 mL). The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane, methanol). The purified product was dissolved in dichloromethane (1 mL) treated with 6 M hydrochloric acid in isopropanol. The solvent was evaporated in vacuo. Yield: 13 mg (0.024 mmol, 14%).
ESI-MS [M+H+]=502 Calculated for C26H32ClN3O3S=501.
The compound was prepared analogously to example 82 from 3-({1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)propane-1-sulfonyl chloride using morpholine in place of 1-propylamine.
ESI-MS [M+H+]=505 Calculated for C26H33ClN2O4S=504.
1-(4-Chlorophenyl)cyclobutanecarboxylic acid (6.63 g, 31.492 mmol) and 2-(4-methoxyphenyl)ethanamine (5.00 g, 33.067 mmol) were treated with dichloromethane (470 mL). The suspension was cooled to 3° C. and N,N-dimethylpyridin-4-amine (4.04 g, 33.1 mmol) and N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (6.35 g, 33.1 mmol) were added. The reaction mixture was allowed to warm to room temperature and was stirred over night. The reaction mixture was washed successively with 2N hydrochloric acid (2×) and water (2×). The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash-chromatography (silica, dichloromethane:methanol=9:1) to give a pale yellow solid. Yield: 10.58 g (30.8 mmol, 98%).
1-(4-Chlorophenyl)-N-[2-(4-methoxyphenyl)ethyl]cyclobutanecarboxamide (10.58 g, 30.8 mmol) was treated with toluene (100 mL). Phosphoryl trichloride (4.72 g, 30.8 mmol) was added and the reaction mixture was heated under reflux for 8 h. After cooling to room temperature the reaction mixture was concentrated in vacuo and then slowly poured in ice water. Ethyl acetate was added and the organic layer was washed with water (2×), dried (MgSO4) and concetrated in vacuo to give an orange oil. Yield: 10.25 g.
The crude 1-[1-(4-chlorophenyl)cyclobutyl]-7-methoxy-3,4-dihydroisoquinoline (10.25 g, 30.8 mmol) was treated with 47% aqueous hydrobromic acid (109 mL) and stirred at 120° C. for 4 h. The reaction mixture was cooled to room temperature. The aqueous layer was decanted. The crude product was treated with dichloromethan, methanol and water and the pH was adjusted to 10 with aqueous 1N sodium hydroxide solution. The product precipitated and the solid was collected by filtration. The product was washed with water and dried in vacuo at 30° C. Yield: 3.56 g (30.3, 12.38 mmol).
The crude 1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (3.5 g, 11.22 mmol) was added to a suspension of sodium hydride (60% in mineral oil, 471 mg, 11.79 mmol) in dimethylformamide (25 mL). After stirring for 30 min at room temperature 1,3-propanesultone (1.44 g, 11.79 mmol) was added dropwise. The reaction mixture was stirred over night at room temperature. The dimethylformamide was removed in vacuo. The crude product (8.4 g) was used for the next step without further purification.
3-({1-[1-(4-Chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)propane-1-sulfonic acid (8.4 g) were dissolved in dichloromethane (70 mL). Pentachloro-λ5-phosphane (6.05 g, 29 mmol) were added at room temperature and the reaction mixture was heated under reflux for 3 h. The reaction mixture was poured on ice water and the aqueous layer was extracted with dichloromethane. The combined organic layers were concentrated in vacuo (11 g). The crude product was used for the next step without further purification. For test purposes a sample of the crude product (3.8 g) was purified by flash chromatography (silica, methanol:acetonitrile=1:1) to yield a pale yellow foam (1.5 g).
1-Propylamine (314 mg, 5.31 mmol) was dissolved in dichloromethane (3 mL) and a solution of 3-({1-[1-(4-chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)propane-1-sulfonyl chloride (200 mg, 0.442 mmol) in dichloromethane (2 mL) was added dropwise. After 1 h stirring at room temperature the reaction mixture was diluted with dichloromethane (10 mL) and was washed with aqueous ammonium chloride solution (2×) and water (1×), dried (MgSO4) and concentrated in vacuo. The crude product (265 mg) was used for the next step without purification.
3-({1-[1-(4-Chlorophenyl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)-N-propylpropane-1-sulfonamide (260 mg, 0.547 mmol) was dissolved in methanol (5 mL) and water (0.2 mL). Sodiumborohydride (41.4 mg, 1.095 mmol) was added in small portions at room temperature and the reaction mixture was stirred over night. 5N Hydrochloric acid in isopropanol was added until the reaction mixture became acidic. Stirring was continued for 30 min at room temperature. The reaction mixture was concentrated in vacuo. The crude product was dissolved in dichloromethane. Aqueous saturated NaHCO3 solution (10 mL) and water (10 mL) were added and the aqueous layer was extracted with dichloromethane (2×). The combined organic layers were dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, first dichloromethane, then dichloromethane:methanol=80:1). The purified product was treated with 2N hydrochloric acid in diethylether. The diethylether was removed by destillation. Yield: 120 mg (0.234 mmol, 42.7%, colorless foam).
ESI-MS [M+H+]=477 Calculated for C25H33ClN2O3S=476.
Prepared from 1-(4-chlorophenyl)cyclobutanecarboxylic acid and 2-(3-bromo-4-methoxyphenyl)ethanamine following the procedure described in example 85, step 1.
Prepared from N-[2-(3-bromo-4-methoxyphenyl)ethyl]-1-(4-chlorophenyl)cyclobutanecarboxamide following the procedure described in example 85, step 2.
Prepared from 6-bromo-1-[1-(4-chlorophenyl)cyclobutyl]-7-methoxy-3,4-dihydroisoquinoline following the procedure described in example 85, step 7.
A solution of 6-bromo-1-[1-(4-chlorophenyl)cyclobutyl]-7-methoxy-1,2,3,4-tetrahydroisoquinoline (203 mg, 0.5 mmol), Boc-piperazine (93 mg, 0.5 mmol), tris(benzylideaceton)dipalladium (18 mg, 0.02 mmol), sodium-tert-butylate (48 mg, 0.5 mmol) and 2′-(dicyclohexylphosphino)-N,N-dimethylbiphenyl-2-amine 815.7 mg, 0.04 mmol) under nitrogen in toluene (5 ml) was heated in the microwave to 120° C. for 10 minutes. The solvent was removed, the residue dissolved in methylenehloride and extracted with water. The methylenehloride was evaporated and the remaining solid purified by chromatography. Yield: 56 mg (0.1 mmol, 20%)
ESI-MS [M+H+]=512 Calc. for C25H24ClN3O3S=511
Prepared from tert-butyl 4-{1-[1-(4-chlorophenyl)cyclobutyl]-7-methoxy-1,2,3,4-tetrahydroisoquinolin-6-yl}piperazine-1-carboxylate (56 mg, 0.11 mmol) following the procedure described in example 85, step 5. Yield: 42 mg (0.1 mmol, 93%)
ESI-MS [M+H+]=412 Calc. for C25H24ClN3O3S=411
Prepared from 1-[1-(4-chlorophenyl)cyclobutyl]-7-methoxy-6-piperazin-1-yl-1,2,3,4-tetrahydroisoquinoline (31 mg, 0.07 mmol) following the procedure described in example 85, step 6. Yield: 8.8 mg (0.02 mmol, 23%)
ESI-MS [M+H+]=518 Calc. for C25H24ClN3O3S=517
Prepared from 1-[1-(4-chlorophenyl)cyclobutyl]-7-methoxy-6-piperazin-1-yl-1,2,3,4-tetrahydroisoquinoline (31 mg, 0.07 mmol) following the procedure described in example 85, step 6. Yield: 9.2 mg (0.015 mmol, 20%)
ESI-MS [M+H+]=624 Calc. for C30H42ClN3O5S2=623
A solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (5.0 g, 25.3 mmol), 2-(4-methoxyphenyl)ethanamine (4.2 g, 28 mmol) and 4-N,N-Dimethylaminopyridin (3.3 g; 28 mmol) in methylenehloride (200 ml) was cooled to −10′C. N-ethyl-N′-(3-Dimethylaminopropyl)-carbodiimid hydrochloride (EDC, 5.3 g, 28 mmol) was added in several portions and the resulting mixture stirred overnight. The reaction mixture was poured into water and consecutively extracted with water, 2N NaOH and 1N HCl. Evaporation of the dried (NaSO4) extract yielded an oily residue that crystallized upon addition of n-heptan, which was used without further purification. Yield 7.0 g (21.2 mmol, 83%).
ESI-MS [M+H+]=330 Calc. for C19H20ClNO2=329
A solution of 1-(4-chlorophenyl)-N-[2-(4-methoxyphenyl)ethyl]cyclopropane-carboxamide (7.0 g, 21.2 mmol) in phosphoroxytrichloride (POCl3, 50 ml) was heated under reflux for 3 days. Evaporation of POCl3 yielded an oily residue that was dissolved in ethylacetate (100 ml). The mixture was poured into ice and basified with NaOH (50%), extracted with water and dried (Na2SO4). Removal of the solvents afforded a residue which was further purified by column chromatography. Yield: 2.5 g (8.1 mmol, 38%).
ESI-MS [M+H+]=312 Calc. for C19H18ClNO=311
A solution of 1-[1-(4-chlorophenyl)cyclopropyl]-7-methoxy-3,4-dihydroisoquinoline (700 mg, 2.2 mmol) in methylenehloride (10 ml) under nitrogen was cooled to −78° C. Borontribromide (BBr3, 4.2 ml 1M in methyleneloride, 4.2 mmol) was added dropwise. The reaction was allowed to warm up to room temperature and stirred overnight. Methanol was added (5 ml) and the resulting mixture poured into water neutralized with 1M sodiumbi-carbonate and extracted consecutively with methylenehloride and water. The organic layer was dried (Na2SO4), the solvents removed and the black residue purified by chromatography. Yield: 320 mg, (1.1 mmol, 48%).
ESI-MS [M+H+]=297 Calc. for C18H16ClNO=298
1-[1-(4-chlorophenyl)cyclopropyl]-3,4-dihydroisoquinolin-7-ol (120 mg, 0.4 mmol) was added in several portions to a suspension of sodium hydrid (NaH, 1.3 mmol, activated by removal of oil) in dimethylformamide (DMF, 5 ml). 2-(Boc-amino)ethyl bromide was added after one hour and the resulting mixture stirred for 3 days at room temperature. DMF was evaporated, the residue diluted with ethylacetate and extracted with water. Removal of the solvents from the dried (Na2SO4) extract afforded an oil which was further purified by chromatography. Yield: 100 mg (0.23 mmol, 56%)
A solution of tert-butyl [2-({1-[1-(4-chlorophenyl)cyclopropyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]carbamate (440 mg, 1 mmol) methylenehloride (10 ml) was treated with 5N HCl in dimethylether (0.5 ml) and stirred over night at room temperature. The solvent was removed, the residue triturated with diisopropyl ether and the insoluble slid collected. Yield: 370 mg (0.98 mmol, 98%)
ESI-MS [M+H+]=341 Calc. for C20H21ClN2O=340
A solution of 2-({1-[1-(4-chlorophenyl)cyclopropyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine (free base, 63 mg, 0.18 mmol), 4-N,N-Dimethylaminopyridin (47 mg, 0.39 mmol), 3-(chlorosulfonyl)pyridiniumchloride in tetrahydrofuran (THF, 10 ml) was stirred at room temperature for 3 days. The solvent was removed, the residue dissolved in ethyl acetate and extracted with water. The ethyl acetate was evaporated and the oily residue purified by chromatography. Yield: 46 mg (0.09 mmol, 52%).
ESI-MS [M+H+]=482 Calc. for C25H24ClN3O3S=481
A solution of N-[2-({1-[1-(4-chlorophenyl)cyclopropyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]-1-methyl-1H-pyrazole-4-sulfonamide (46 mg, 0.09 mmol), sodium borohydrid (7.2 mg, 0.19 mmol) in water (0.25 ml) and methanol (2 ml) was stirred for 3 days at room temperature. The solvent was removed, the residue dissolved in methylenehloride and extracted with water. The methylenehloride was evaporated and the remaining solid purified by chromatography. Yield: 20 mg (0.04 mmol, 43%)
ESI-MS [M+H+]=484 Calc. for C25H24ClN3O3S=483
Prepared following the procedure described in example 85 using 1-methyl-1H-pyrazole-4-sulfonyl chloride instead of 3-(chlorosulfonyl)-pyridiniumchloride in step 6.
ESI-MS [M+H+]=487 Calc. for C24H27ClN4O3S=486
N-[2-({1-[1-(4-Chlorophenyl)cyclopropyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide hydrochloride
Prepared following the procedure described in example 85 using propane-1-sulfonyl chloride instead of 3-(chlorosulfonyl)pyridiniumchloride in step 6.
ESI-MS [M+H+]=449 Calc. for C23H29ClN2O3S=448
The following compounds of the invention were prepared in an analogous manner:
ESI-MS [M+H+]=461
ESI-MS [M+H+]=462
ESI-MS [M+H+]=433
ESI-MS [M+H+]=471
ESI-MS [M+H+]=323
ESI-MS [M+H+]=471
ESI-MS [M+H+]=451
ESI-MS [M+H+]=477
ESI-MS [M+H+]=421
ESI-MS [M+H+]=465.2
2-(6-Chloropyridin-2-yl)acetonitrile (5.7 g, 37.4 mmol) was dissolved in dichloromethane (25 ml). 50% aqueous sodium hydroxide solution (26.5 mL) was added dropwise. Benzyltriethylammonium chloride (0.17 g, 0.747 mmol) was added. 1,3-Dibromopropane (7.54 g, 37.4 mmol) were added dropwise and the reaction mixture was stirred over night at room temperature. The reaction mixture was diluted with dichloromethane and washed with water (3×). The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane, methanol). Yield: 2.4 g (10.9 mmol, 29%).
1-(6-Chloropyridin-2-yl)cyclobutanecarbonitrile (2.4 g, 12.46 mmol) was suspended in concentrated aqueous hydrochloric acid (15.1 ml) and the reaction mixture heated to 100° C. for 30 min in the microwave. The solvent was evaporated in vacuo. Toluol was added and the solvent was evaporated in vacuo. The crude product was used for the next step without further purification. Yield: 2.68 g (10.8 mmol, 87%).
1-(6-Chloropyridin-2-yl)cyclobutanecarboxylic acid hydrochloride (2.6 g, 10.48 mmol) was suspended in dichloromethane (30 ml). 2-(4-Methoxyphenyl)ethanamine (1.743 g, 11.53 mmol) and 4-dimethylaminopyridine (2.56 g, 20.96 mmol) were added and stirring at room temperature was continued for 30 min. The reaction mixture was cooled to 0° C. and 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (2.21 g, 11.53 mmol) was added in small portions. The reaction mixture was allowed to warm to room temperature and stirring was continued over night. The reaction mixture was poured on water. The aqueous layer was extracted with dichloromethane (3×). The combined organic layers were washed with 5% aqueous citric acid and dried (MgSO4). The solvent was evaporated in vacuo and the crude product purified by flash chromatography (silica, heptane, ethyl acetate). Yield: 709 mg (2.056 mmol, 19.6%).
N-[2-(4-methoxyphenyl)ethyl]-1-(pyridin-2-yl)cyclobutanecarboxamide (679 mg, 1.969 mmol) was reacted with phosphorusoxychloride (2.7 ml, 29.5 mmol) in the microwave at 140° C. for 60 min. The reaction mixture was poured on ice water. After 10 min 10% aqueous sodium hydroxide solution was added until pH 8 was reached. The aqueous layer was extracted with dichloromethane. The combined extracts were dried (MgSO4), concentrated in vacuo and the crude product was purified by flash chromatography (silica, dichloromethane, methanol). Yield: 560 mg (1.71 mmol, 87%).
1-[1-(6-Chloropyridin-2-yl)cyclobutyl]-7-methoxy-3,4-dihydroisoquinoline (550 mg, 1.68 mmol) in 48% aqueous hydrobromic acid (3.8 ml) was heated under reflux for 4 hours. After cooling to room temperature the reaction mixture was poured on ice water. 10% aqueous sodium hydroxide solution was added until pH 8 was reached. The mixture was extracted with dichloromethane (3×). The combined organic extracts were dried (MgSO4), concentrated in vacuo and purified by flash chromatography (silica, dichloromethane, methanol). Yield: 220 mg (0.70 mmol, 42%).
90% suspension of sodium hydride in oil (37 mg, 1.387 mmol) was washed with n-pentane and suspended in dry dimethylformamide (5 ml). (1-[1-(6-Chloropyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (217 mg, 0.69 mmol) dissolved in dimethylformamide (1 ml) was added dropwise. After stirring at room temperature for 1 hour a solution of tert-butyl-2-bromoethylcarbamate (466 mg, 2.08 mmol) in dimethylformamide (2 ml) was added dropwise. The reaction mixture was heated to 40° C. for 4 hours. The reaction mixture was diluted with water (30 ml) and extracted with dichloromethane (3×). The combined organic extracts were washed with brine twice, dried (MgSO4) and concentrated in vacuo. The crude product was used for the next step without further purification.
tert-Butyl [2-({1-[1-(6-chloropyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]carbamate (300 mg, 0.658 mmol) were dissolved in isopropanole (4 ml). 5N isopropanolic hydrochloric acid (2 ml) was added and the reaction mixture stirred at room temperature for 4 hours. The solvent was evaporated in vacuo and dichloromethane (20 mL) was added. 1N aqueous sodium hydroxide solution was added dropwise until pH 10 was reached. The phases were separated and the aqueous layer was extracted twice with dichloromethane. The combined organich layers were dried (MgSO4) and concentrated in vacuo. The crude product was used for the next step without further purification. Yield: 150 mg (0.422 mmol, 64%).
2-({1-[1-(6-Chloropyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethanamine (80 mg, 0.225 mmol) was dissolved in pyridine and propane-1-sulfonyl chloride (29 μl, 0.25 mmol) were added. The reaction mixture was stirred at room temperature over night. The solvent was evaporated in vacuo. Toluene was added to the residue and the solvent was evaporated in vacuo (repeated twice). The crude product was purified by flash chromatography (silica, dichloromethane, methanol). Yield: 36 mg (0.078 mmol, 35%).
N-[2-({1-[1-(6-Chloropyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (36 mg, 0.78 mmol) was dissolved in methanol (1 ml). Sodiumborohydride (12 mg, 0.31 mmol) was added and stirring was continued at room temperature over night. The solvent was evaporated in vacuo and the residue partitioned between dichloromethane and 1N aqueous sodium hydroxide solution. The layers were separated and the organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was used for the next step without further purification. Yield: 9 mg.
N-[2-({1-[1-(6-Chloropyridin-2-yl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]propane-1-sulfonamide (9 mg) were dissolved in methanol (1 ml). 10% Palladium on charcoal (5 mg) was added and the reaction mixture was stirred under an atmosphere of hydrogen at room temperature for 36 hours. The catalyst was removed by filtration and washed with methanol. The solvent was evaporated in vacuo. 5N isopropanolic hydrochloric acid (0.5 ml) was added. The solvent was evaporated in vacuo. Yield: 9 mg.
ESI-MS [M+H+]=430 Calculated for C23H31N3O3S=429.
ESI-MS [M+H+]=476
ESI-MS [M+H+]=459
ESI-MS [M+H+]=482
ESI-MS [M+H+]=459
ESI-MS [M+H+]=493.2
ESI-MS [M+H+]=448.2
ESI-MS [M+H+]=464.2
ESI-MS [M+H+]=487
ESI-MS [M+H+]=311
ESI-MS [M+H+]=468
ESI-MS [M+H+]=512
ESI-MS [M+H+]=543
ESI-MS [M+H+]=514.2
ESI-MS [M+H+]=511
ESI-MS [M+H+]=514.2
ESI-MS [M+H+]=557
ESI-MS [M+H+]=551
ESI-MS [M+H+]=551
ESI-MS [M+H+]=477
ESI-MS [M+H+]=491
ESI-MS [M+H+]=512
ESI-MS [M+H+]=404
ESI-MS [M+H+]=541
ESI-MS [M+H+]=546
ESI-MS [M+H+]=604
ESI-MS [M+H+]=552
1-[1-(6-Chloropyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinolin-7-ol (1.93 g, 6.17 mmol) were dissolved in methanol (100 ml) under an atmosphere of nitrogen. 10% Pd/C (0.19 g) were added and the reaction mixture stirred at room temperature under an atmosphere of hydrogen for 48 hours. The catalyst was removed by filtration and the solvent was evaporated in vacuo. The crude product was used without further purification for the next step. Yield: 1.75 g (5.52 mmol, 90%).
1-[1-(Pyridin-2-yl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-ol (1.75 g, 5.52 mmol) was suspended in dichloromethane (200 ml). Diisopropylethylamine (2.89 ml, 16.57 mmol) were added at 0° C. followed by di-tert-butyl dicarbonate (1.21 g, 5.52 mmol). The reaction mixture was allowed to warm to room temperature and stirring was continued over night. The reaction mixture was washed successively with aqueous ammonium chloride solution (3×) and aqueous sodium hydrogencarbonate. The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was used without further purification for the next step. Yield: 2.1 g.
tert-Butyl 7-hydroxy-1-[1-(pyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinoline-2(1H)-carboxylate (2.1 g, 5.52 mmol) was dissolved in dichloromethane (200 ml). 1,1,1-Trifluoro-N-phenyl-N-(trifluoromethylsulfonyl)methanesulfonamide (2.07 g, 5.8 mmol) was added in small portions at 5° C. followed by dropwise addidion of triethylamine (2.3 ml, 16.56 mmol) in dichloromethane (46 mL). The reaction mixture was stirred for 6 hours at room temperature and then washed successively with aqueous ammonium chloride solution (3×) and aqueous sodium hydrogencarbonate solution. The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane, methanol). Yield: 1.735 g (61%).
Dipalladium trisdibenzylidene acetone (0.14 g, 0.153 mmol) and diphenylphosphinoferrocene (0.338 g, 0.61 mmol) were suspended in dimethylformamide (15 ml) under an argon atmosphere. tert-Butyl 1-[1-(pyridin-2-yl)cyclobutyl]-7-{[(trifluoromethyl)sulfonyl]oxy}-3,4-dihydroisoquinoline-2(1H)-carboxylate (0.782 g, 1.562 mmol) was added and the reaction mixture was heated to 90° C. Zinc cyanide (0.215 g, 1.831 mmol) was added over 30 min in small portions. Stirring at 90° C. was continued for 15 min. After cooling to room temperature the catalyst was removed by filtration and washed with dimethylformamide. The dimethylformamide filtrate was poured in water (200 ml). The water was extracted with dichloromethane (3×). The combined organic extracts were washed with water, dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography (silica, dichloromethane, methanol). Yield: 197 mg (0.506 mmol, 33%).
tert-Butyl 7-cyano-1-[1-(pyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinoline-2(1H)-carboxylate (169 mg, 0.434 mmol) was dissolved in methanol (15 mL) under an atmosphere of nitrogen. Raney nickel (100 mg) was added and the reaction mixture stirred at room temperature under an atmosphere of hydrogen for 9 hours. The catalyst was removed by filtration. The filtrate was concentrated in vacuo and the crude product was purified by flash chromatography (silica, dichloromethane, methanol). Yield: 103 mg (0.262 mmol, 60%).
tert-Butyl 7-(aminomethyl)-1-[1-(pyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinoline-2(1H)-carboxylate (33 mg, 0.084 mmol) was dissolved in dichloromethane. 4-Dimethylaminopyridine (30.7 mg, 0.252 mmol) was added. After stirring for 5 min propane-1-sulfonyl chloride (12 mg, 0.084 mmol) was added and stirring was continued over night. The reaction mixture was diluted with dichloromethane (30 ml) and washed with aqueous ammonium chloride solution. The organic layer was washed with water, dried (MgSO4) and concentrated in vacuo. The crude product was used for the next step without further purification. Yield: 37 mg.
tert-Butyl 7-{[(propylsulfonyl)amino]methyl}-1-[1-(pyridin-2-yl)cyclobutyl]-3,4-dihydroisoquinoline-2(1H)-carboxylate (30 mg, 0.060 mmol) was dissolved in 5N isopropanolic hydrochloride solution (1 ml). After deprotection was completed (TLC) the solvent was evaporated in vacuo. The crude product was purified by preparative HPLC (RP18, acetonitrile, water, 0.1% TFA). Yield: 1.5 mg (3.75 μmol, 6.3%).
ESI-MS [M+H+]=400 Calculated for C22H29N3O2S=399.
ESI-MS [M+H+]=578
ESI-MS [M+H+]=552
ESI-MS [M+H+]=512
ESI-MS [M+H+]=290.2
ESI-MS [M+H+]=478
ESI-MS [M+H+]=547
ESI-MS [M+H+]=506
ESI-MS [M+H+]=504
ESI-MS [M+H+]=412.2
ESI-MS [M+H+]=493
ESI-MS [M+H+]=547
ESI-MS [M+H+]=492
ESI-MS [M+H+]=537.1
ESI-MS [M+H+]=451.2
ESI-MS [M+H+]=481.2
ESI-MS [M+H+]=498.2
ESI-MS [M+H+]=478.2
ESI-MS [M+H+]=464.2
ESI-MS [M+H+]=517.1
ESI-MS [M+H+]=437.1
ESI-MS [M+H+]=464.2
ESI-MS [M+H+]=512.2
ESI-MS [M+H+]=490.2
ESI-MS [M+H+]=492.2
ESI-MS [M+H+]=514.2
ESI-MS [M+H+]=490.2
ESI-MS [M+H+]=464.2
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]-1H-pyrazole-4-sulfonamide hydrochloride
ESI-MS [M+H+]=487.2
ESI-MS [M+H+]=464.2
ESI-MS [M+H+]=491.2
ESI-MS [M+H+]=528.2
ESI-MS [M+H+]=512.2
ESI-MS [M+H+]=464.4
ESI-MS [M+H+]=490.2
ESI-MS [M+H+]=504.2
ESI-MS [M+H+]=532.3
ESI-MS [M+H+]=534.2
ESI-MS [M+H+]=519.1
ESI-MS [M+H+]=504.2
ESI-MS [M+H+]=513.2
N-[2-({1-[1-(4-Chlorophenyl)cyclobutyl]-1,2,3,4-tetrahydroisoquinolin-7-yl}oxy)ethyl]azetidine-3-sulfonamide (2E)-but-2-enedioate
ESI-MS [M+H+]=476.2
ESI-MS [M+H+]=577.1
ESI-MS [M+H+]=537.1
ESI-MS [M+H+]=506.2
ESI-MS [M+H+]=624.3
ESI-MS [M+H+]=505.2
ESI-MS [M+H+]=490.2
ESI-MS [M+H+]=590.2
ESI-MS [M+H+]=506.2
ESI-MS [M+H+]=490.2
ESI-MS [M+H+]=549.1
ESI-MS [M+H+]=594.3
ESI-MS [M+H+]=492.2
ESI-MS [M+H+]=594.2
ESI-MS [M+H+]=518.2
ESI-MS [M+H+]=506.2
ESI-MS [M+H+]=498.1
ESI-MS [M+H+]=547.2
ESI-MS [M+H+]=492.2
ESI-MS [M+H+]=569.3
ESI-MS [M+H+]=520.2
ESI-MS [M+H+]=506.2
ESI-MS [M+H+]=561.2
ESI-MS [M+H+]=583.3
ESI-MS [M+H+]=504.2
ESI-MS [M+H+]=555.2
ESI-MS [M+H+]=504.2
ESI-MS [M+H+]=504.3
ESI-MS [M+H+]=534.2
ESI-MS [M+H+]=534.3
ESI-MS [M+H+]=506.3
ESI-MS [M+H+]=520.2
ESI-MS [M+H+]=502.2
ESI-MS [M+H+]=488.1
ESI-MS [M+H+]=546.2
ESI-MS [M+H+]=548.2
ESI-MS [M+H+]=535.3
ESI-MS [M+H+]=503.2
ESI-MS [M+H+]=488.1
Biological Testing
1. [3H]-Glycine uptake into recombinant CHO cells expressing human GlyT1: Human GlyT1c expressing recombinant hGlyT1c—5_CHO cells were plated at 20,000 cells per well in 96 well Cytostar-T scintillation microplates (Amersham Biosciences) and cultured to sub-confluency for 24 h. For glycine uptake assays the culture medium was aspirated and the cells were washed once with 100 μl HBSS (Gibco BRL, #14025-050) with 5 mM L-Alanine (Merck #1007). 80 μl HBSS buffer were added, followed by 10 μl inhibitor or vehicle (10% DMSO) and 10 μl [3H]-glycine (TRK71, Amersham Biosciences) to a final concentration of 200 nM for initiation of glycine uptake. The plates were placed in a Wallac Microbeta (PerkinElmer) and continuously counted by solid phase scintillation spectrometry during up to 3 hours. Nonspecific uptake was determined in the presence of 10 μM Org24598. IC50 calculations were made by four-parametric logistic nonlinear regression analysis (GraphPad Prism) using determinations within the range of linear increase of [3H]-glycine incorporation between 60 and 120 min.
2. Radioligand binding assays using recombinant CHO cell membranes expressing human GlyT1:
Radioligand binding to human GlyT1c transporter-expressing membranes was carried out as described in Mezler et al., Molecular Pharmacology 74:1705-1715, 2008.
More specifically, [3H]-(R)-NPTS radioligand binding to human GlyT1c transporter-expressing membranes was measured in duplicate in a total volume of 200 μl in 96-well plates. To 100 μl of membrane suspension (yielding a final membrane protein concentration of 50 μg/ml) in assay buffer (120 mM NaCl, 2 mM KCl, 10 mM Hepes, 1 mM MgCl2, 1 mM CaCl2, pH 7.5) 80 μl of [3H]-(R)-NPTS (0.5 nM final) were added in assay buffer. For competition experiments 10 μl of buffer or unlabeled compound solution obtained from dilution series of test compounds in DMSO followed. An intermediate 1:10 dilution in assay buffer yielded a final DMSO concentration of 1%. Non-specific binding was determined in the presence of 10 μM Org24598 (or its racemate Org24461) for [3H]-(R)-NPTS. After incubation at room temperature for 1 h, the incubation mixture was harvested (Tomtec Mach III U Harvester) through 96-well GF/B filter plates (PerkinElmer), presoaked for 1 h with 40 μl per well of 0.1% polyethylene-imine (PEI). After washing twice with ice-cold 50 mM Tris-HCl pH 7.4 buffer, drying and addition of 35 μl scintillator (BetaplateScint, PerkinElmer) per well followed. The radioactivity was determined by liquid scintillation spectrometry in a MicroBeta (PerkinElmer) plate counter.
Data analysis: For binding of [3H]-(R)-NPTS to cell membranes, the calculation of Kd and Bmax values from the saturation binding assays and the IC50 values from the displacement binding was performed by iterative non-linear regression analysis adapted from the ‘Ligand’ program (Munson and Rodbard, 1980). Radioligand displacement curves in absence or in presence of increasing concentrations of tested compounds were fitted using a one-site fit and the apparent Ki values were calculated from the IC50 values using the Cheng-Prusoff equation (Cheng and Prusoff 1973).
The following results were obtained with the compounds disclosed in the examples:
1)for examples 1-19, 22-52, and 54-87 the radioligand was [3H]-(R)-NPTS.
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| PCT/EP2009/053800 | 3/31/2009 | WO | 00 | 12/20/2010 |
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