Patent Application
20230183237
The present disclosure relates to compounds, compositions, and methods for treating disorders associated with muscarinic acetylcholine receptor subtype 5 dysfunction or disorders that benefit from inhibition of the muscarinic acetylcholine receptor sub type 5.
Substance-related disorders, e.g., opiate use disorder (OUD), alcohol use disorder (AUD), cocaine use disorder (CUD) and nicotine use disorder (NUD), are debilitating neuropsychiatric conditions that involve periods of compulsive drug use, followed by dependence and then repeated instances of relapse after periods of abstinence. Currently, OUD is a global epidemic. Prescription opioid analgesics are effective pain medications; however, the use of opioid analgesics is also associated with high risks of misuse, dependence, and overdose due to their strong rewarding effects. In addition, the vast majority of all estimated drug-related overdose deaths involve opioids, with nearly half of those attributed to prescription pain medications. There is no FDA-approved treatment for OUD.
Recent attention has focused on the M5 muscarinic acetylcholine receptor (M5 mAChR) in motivated behaviors, including drug self-administration, and thus inhibition of this receptor may represent an alternative strategy for the reduction or blockade of the reinforcing effects of multiple substances of abuse.
Of the five mAChR subtypes (M1M5) activated by acetylcholine (ACh), the M5 mAChR has very limited CNS expression, and is the only subtype expressed on dopamine neurons in the ventral midbrain, including the ventral tegmental area (VTA) and the substantia nigra pars compacta (SNc). VTA dopaminergic neurons project to the nucleus accumbens, also known as the canonical mesolimbic reward pathway. All substances of abuse, including opioids and stimulants, increase dopamine release in the nucleus accumbens and drug seeking behaviors. Due to its localization, the M5 receptor provides important control of midbrain dopaminergic neuronal activity under physiological conditions and after exposure to substances of abuse. Consistent with this supposition, increases in extracellular DA efflux in the nucleus accumbens induced by the μ-opioid agonist morphine were absent in M5 knockout [KO] mice. Moreover, M5 KO mice showed significantly reduced reinforcing effects of cocaine as well as opioid place preference. Additionally, severity of naloxone-induced morphine withdrawal symptoms were also reduced in the M5 KO mice. In contrast, the acute analgesic effects of morphine and the development of tolerance to these effects remained unaltered in the M5 KO mice relative to the control mice.
Thus, compounds possessing a more selective profile for individual mAChRs, such as M5, may offer an advantage in substance use disorders, as well as other neuropsychiatric disorders. For example, some studies indicate that the M5 mAChR subtype may play a therapeutic role in depression and anxiety; however, a lack of highly selective M5 antagonists has hindered the field.
In one aspect, the invention provides compounds of formula (I), or a pharmaceutically acceptable salt thereof,
L1 is SO2, SO, or C(O);
In another aspect, the invention provides compounds of formula (I), or a pharmaceutically acceptable salt thereof,
In another aspect, the invention provides a pharmaceutical composition comprising a compound of formula (I), or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier.
in another aspect, the invention provides a method of treating a disorder in a subject, wherein the subject would benefit from inhibition of mAChR M5, comprising administering to the subject a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or composition thereof.
In another aspect; the invention provides a method for inhibiting mAChR M5 in a subject, comprising administering to the subject a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or composition thereof.
In another aspect, the invention provides a method for the treatment of a psychiatric disorder comprising administering to a subject in need thereof a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or composition thereof.
In another aspect, the invention provides a compound of formula (1), or a pharmaceutically acceptable salt or composition thereof, for use in the treatment of a psychiatric disorder.
In another aspect, the invention provides a compound of formula (I), or a pharmaceutically acceptable salt or composition thereof, for use in inhibiting mAChR M5 in a subject.
In another aspect, the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or composition thereof, in the manufacture of a medicament for the treatment of a psychiatric disorder.
In another aspect, the invention provides the use of a compound of formula le, or a pharmaceutically acceptable salt or composition thereof, in the manufacture of a medicament for inhibiting mAChR M5 in a subject.
In another aspect, the invention provides a kit comprising a compound of formula (I), or a pharmaceutically acceptable salt or composition thereof, and instructions for use.
Disclosed herein are compounds that are antagonists of the muscarinic acetylcholine receptor M5 (mAChR M5), methods of making the compounds, pharmaceutical compositions comprising the compounds, and methods of treating disorders using the compounds and pharmaceutical compositions.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In case of conflict, the present document, including definitions, will control. Preferred methods and materials are described below, although methods and materials similar or equivalent to those described herein can be used in practice or testing of the present invention. All publications, patent applications, patents and other references mentioned herein are incorporated by reference in their entirety. The materials, methods, and examples disclosed herein are illustrative only and not intended to be limiting.
The terms “comprise(s),” “include(s),” “having,” “has,” “can,” “contain(s),” and variants thereof, as used herein, are intended to be open-ended transitional phrases, terms, or words that do not preclude the possibility of additional acts or structures. The singular forms “an” and “the” include plural references unless the context clearly dictates otherwise. The present disclosure also contemplates other embodiments “comprising,” “consisting of” and “consisting essentially of,” the embodiments or elements presented herein, whether explicitly set forth or not.
The modifier “about” used in connection with a quantity is inclusive of the stated value and has the meaning dictated by the context (for example, it includes at least the degree of error associated with the measurement of the particular quantity). The modifier “about” should also be considered as disclosing the range defined by the absolute values of the two endpoints. For example, the expression “from about 2 to about 4” also discloses the range “from 2 to 4.” The term “about” may refer to plus or minus 10% of the indicated number. For example, “about 10%” may indicate a range of 9% to 11%, and “about 1” may mean from 0.9-1.1. Other meanings of “about” may be apparent from the context, such as rounding off, so, for example “about 1” may also mean from 0.5 to 1.4.
Definitions of specific functional groups and chemical terms are described in more detail below, For purposes of this disclosure, the chemical elements are identified in accordance with the Periodic Table of the Elements, CAS version, Handbook of Chemistry and Physics, 75th Ed., inside cover, and specific functional groups are generally defined as described therein. Additionally, general principles of organic chemistry, as well as specific functional moieties and reactivity, are described in Organic Chemisity, Thomas Sorrel, University Science Books, Sausalito, 1999; Smith and March March's Advanced Organic Chemistry, 5th Edition, John Wiley & Sons, Inc., New York, 2001; Larock, Comprehensive Organic Tramsformations, VCH Publishers, Inc., New York, 1989; Carruthers, Some Modern Methods of Organic Synthesis, 3rd Edition, Cambridge University Press, Cambridge, 1987; the entire contents of each of which are incorporated herein by reference.
The term “alkoxy,” as used herein, refers to a group —O-alkyl. Representative examples of alkoxy include, but are not limited to, methoxy, ethoxy, propoxy, 2-propoxy, butoxy and tert-butoxy.
The term “alkyl,” as used herein, means a straight or branched, saturated hydrocarbon chain. The term “lower alkyl” or “C1-6alkyl” means a straight or branched chain hydrocarbon containing from 1 to 6 carbon atoms. The term “C1-4alkyl” means a straight or branched chain hydrocarbon containing from 1 to 4 carbon atoms. Representative examples of alkyl include, but are not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, 3-methylhexyl, 2,2-dimethylpentyl, 2,3 dimethylpentyl n-heptyl, n-octyl, n-nonyl, and n-decyl.
The term “alkenyl,” as used herein, means a straight or branched, hydrocarbon chain containing at least one carbon-carbon double bond.
The term “alkoxyalkyl,” as used herein, refers to an alkoxy group, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
The term “alkoxyfluoroalkyl,” as used herein, refers to an alkoxy group, as defined. herein, appended to the parent molecular moiety through a fluoroalkyl group, as defined herein.
The term “alkylene,” as used herein, refers to a divalent group derived from a straight or branched chain hydrocarbon, for example, of 1 to 3 carbon atoms. Representative examples of alkylene include, but are not limited to, —CH2—, —CD2—, —CH2CH2—, —C(CH3)(H)—, —C(CH3)(D)-, —CH2CH2CH2—, —CH2CH2CH2CH2—, and —CH2CH2CH2CH2CH2—.
The term “alkylamino,” as used herein, means at least one alkyl group, as defined herein, is appended to the parent molecular moiety through an amino group, as defined herein,
The term “amide,” as used herein, means —C(O)NR— or —NRC(O)—, wherein R may be hydrogen, alkyl, cycloalkyl, aryl, heteroaryl, heterocycle, alkenyl, or heteroalkyl.
The term “a.minoalkyl,” as used herein, means at least one amino group, as defined herein, is appended to the parent molecular moiety through an alkylene group, as defined herein.
The term “amino,” as used herein, means —NRxRy, wherein Rx and Ry may be hydrogen, alkyl, cycloalkyl, aryl, heteroaryl, heterocycle, alkenyl, or heteroalkyl. In the case of an aminoalkyl group or any other moiety where amino appends together two other moieties, amino may be —NRx—, wherein Rx may be hydrogen, alkyl, cycloalkyl, aryl, heteroaryl, heterocycle, alkenyl, or heteroalkyl.
The term “aryl,” as used herein, refers to a phenyl or a phenyl appended to the parent molecular moiety and fused to a cycloalkane group (e.g., the aryl may be indan-4-yl), fused to a 6-membered arene group (i.e., the aryl is naphthyl), or fused to a non-aromatic heterocycle (e.g., the aryl may be benzo[d][1,3]dioxol-5-yl). The term “phenyl” is used when referring to a substituent and the term 6-membered arene is used when referring to a fused ring. The 6-membered arene is monocyclic (e.g., benzene or benzo). The aryl may be monocyclic (phenyl) or bicyclic (e.g., a 9- to 12-membered fused bicyclic system).
The term “cyanoalkyl,” as used herein, means at least one —CN group, is appended to the parent molecular moiety through an alkylene group, as defined herein.
The term “cyanofluoroalkyl,” as used herein, means at least one —CN group, is appended to the parent molecular moiety through a fluoroalkyl group, as defined herein.
The term “cycloalkoxy,” as used herein, refers to a cycloalkyl group, as defined herein, appended to the parent molecular moiety through an oxygen atom.
The term “cycloalkyl” or “cycloalkane,” as used herein, refers to a saturated ring system containing all carbon atoms as ring members and zero double bonds. The term “cycloalkyl” is used herein to refer to a cycloalkane when present as a substituent. A cycloalkyl may be a monocyclic cycloalkyl (e.g., cyclopropyl), a fused bicyclic cycloalkyl (e.g., decahydronaphthalenyl), or a bridged cycloalkyl in which two non-adjacent atoms of a ring are linked by an alkylene bridge of 1, 2, 3. or 4 carbon atoms (e.g., bicyclo[2.2.1]heptanyl). Representative examples of cycloalkyl include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, adamantyl, and bicyclo[1.1.1]pentanyl.
The term “cycloalkenyl” or “cycloalkene,” as used herein, means a non-aromatic monocyclic or multicyclic ring system containing all carbon atoms as ring members and at least one carbon-carbon double bond and preferably having from 5-10 carbon atoms per ring. The term “cycloalkenyl” is used herein to refer to a cycloalkene when present as a substituent. A cycloalkenyl may be a monocyclic cycloalkenyl (e.g., cyclopentenyl), a fused bicyclic cycloalkenyl (e.g., octahydronaphthalenyl), or a bridged cycloalkenyl in which two non-adjacent atoms of a ring are linked by an alkylene bridge of 1, 2, 3, or 4 carbon atoms (e.g., bicyclo[2.2.1]heptenyl). Exemplary monocyclic cycloalkenyl rings include cyclopentenyl, cyclohexenyl or cycloheptenyl. Exemplary monocyclic cycloalkenyl rings include cyclopentenyl, cyclohexenyl or cycloheptenyl.
The term “carbocyclyl” means a “cycloalkyl” or a “cycloalkenyl.” The term “carbocycle” means a “cycloalkane” or a “cycloalkene.” The term “carbocycly” refers to a “carbocycle” when present as a substituent.
The term “fluoroalkyl,” as used herein, means an alkyl group, as defined herein, in which one, two, three, four, five, six, seven or eight hydrogen atoms are replaced by fluorine. Representative examples of fluoroalkyl include, but are not limited to, 2-fluoroethyl, 2,2,2-triftuoroethyl, trifluoromethyl, difluoromethyl, pentafluoroethyl, and trifluoropropyl such as 3,3,3-trifluoropropyl.
The term “fluoroalkoxy,” as used herein, means at least one fluoroalkyl group, as defined herein, is appended to the parent molecular moiety through an oxygen atom. Representative examples of fluoroalkoxy include, but are not limited to, difluoromethoxy, trifluoromethoxy and 2,2.2-trifluoroethoxy.
The term “halogen” or “halo,” as used herein, means Cl, Br, I, or F.
The term “haloalkyl,” as used herein, means an alkyl group, as defined herein, in which one, two, three, four, five, six, seven or eight hydrogen atoms are replaced by a halogen.
The term “haloalkoxy,” as used herein, means at least one haloalkyl group, as defined herein, is appended to the parent molecular moiety through an oxygen atom.
The term “halocycloalkyl,” as used herein, means a cycloalkyl group, as defined herein, in which one or more hydrogen atoms are replaced by a halogen.
The term “heteroalkyl,” as used herein, means an alkyl group, as defined herein, in which one or more of the carbon atoms has been replaced by a heteroatom selected from S, O, P and N. Representative examples of heteroalkyls include, but are not limited to, alkyl ethers, secondary and tertiary alkyl amines, amides, and alkyl sulfides.
The term “heteroaryl,” as used herein, refers to an aromatic monocyclic heteroatom-containing ring (monocyclic heteroaryl) or a bicyclic ring system containing at least one monocyclic heteroaromatic ring (bicyclic heteroaryl). The term “heteroaryl” is used herein to refer to a heteroarene when present as a substituent. The monocyclic heteroaryl are five or six membered rings containing at least one heteroatom independently selected from the group consisting of N, O and S (e.g. 1, 2, 3, or 4 heteroatoms independently selected from O, S, and N). The five membered aromatic monocyclic rings have two double bonds and the six membered aromatic monocyclic rings have three double bonds. The bicyclic heteroaryl is an 8- to 12-membered ring system and includes a fused bicyclic heteroaromatic ring system (i.e., 10π electron system) such as a monocyclic heteroaryl ring fused to a 6-membered arctic (e.g., quinolin-4-yl, indo1-yl), a monocyclic heteroaryl ring fused to a monocyclic heteroarene (e.g., naphthyridinyl), and a phenyl fused to a monocyclic heteroarene quinolin-5-yl, indo1-4-yl). A bicyclic heteroaryl/heteroarene group includes a 9-membered fused bicyclic heteroaromatic ring system having four double bonds and at least one heteroatom contributing a lone electron pair to a fully aromatic 10π electron system, such as ring systems with a nitrogen atom at the ring junction (e.g., imida.zopyridine) or a benzoxadia.zolyl. A bicyclic heteroaryl also includes a. fused bicyclic ring system composed of one heteroaromatic ring and one non-aromatic ring such as a monocyclic heteroaryl ring fused to a monocyclic carbocyclic ring (e.g., 6,7-dihydro-5H-cyclopenta[b]pyridinyl), or a monocyclic heteroaryl ring fused to a mon.ocyclic heterocycle (e.g., 2,3-dihydrofuro[3,2-b]pyridinyl). The bicyclic heteroaryl is attached to the parent molecular moiety at. an aromatic ring atom. Other representative examples of heteroaryl include, but are not limited to, indolyl (e.g., indo1-1-yl, indo1-2-yl, indol-4-yl), pyridinyl (including pyridin-2-yl, pyridin-3-yl, pyridin-4-yl), pyrimidinyl, pyrazinyl, pyridazinyl, pyrazolyl (e.g., pyrazol-4-yl), pyrrolyl, benzopyrazolyl, 1,2,3-triazolyl (e.g., triazol-4-yl),1,3,4-thiadiazolyl, 1,2,4-thiadiazolyl, 1,3,4-oxadiazolyl, imidazolyl, thiazolyl (e.g., thiazol-4-yl), isothiazolyl, thienyl, benzimida.zolyl (e.g., benzimidazol-5-yl), benzothiazolyl, benzoxazolyl, benzoxadiazolyl, benzothienyl, benzofuranyl, isobenzofuranyl, furanyl, oxazolyl, isoxazolyl, purinyl, isoindolyl, quinoxalinyl, indazolyl (e.g., indazol-4-yl, indazol-5-yl), quinazolinyl, 1,2,4-triazinyl, 1,3,5-triazinyl, isoquinolinyl, quinolinyl, imidazo[1,2-a]pyridinyl (e.g., imidazo[1,2-a]pyridin-6-yl), naphthyridinyl, pyridoimidazolyl, thiazolo[5,4-b]pyridin-2-yl, and thiazolo[5,4-d]pyrimidin-2-yl.
The term “heterocycle” or “heterocyclic,” as used herein, means a monocyclic heterocycle, a bicyclic heterocycle, or a tricyclic heterocycle. The term “heterocyclyl” is used herein to refer to a heterocycle when present as a substituent. The monocyclic heterocycle is a three-, four-, five-, six-, seven-, or eight-membered ring containing at least one heteroatom independently selected from the group consisting of O, N, and S. The three- or four-membered ring contains zero or one double bond, and one heteroatom selected from the group consisting of O, N, and S. The five-membered ring contains zero or one double bond and one, two or three heteroatoms selected from the group consisting of O, N and S. The six-membered ring contains zero, one or two double bonds and one, two, or three heteroatoms selected from the group consisting of O, N, and S. The seven- and eight-membered rings contains zero, one, two, or three double bonds and one, two, or three heteroatoms selected from the group consisting of O, N, and S. Representative examples of monocyclic heterocyclyls include, but are not limited to, azetidinyl, azepanyl, aziridinyl, diazepanyl, 1,3-dioxanyl, 1,3-dioxolanyl, 1,3-dithiolanyl, 1,3-dithianyl, imidazolinyl, imidazolidinyl, isothiazolinyl, isothiazolidinyl, isoxazolinyl, isoxazolidinyl, morpholinyl, 2-oxo-3-piperidinyl, 2-oxoazepan-3-yl, oxadiazolinyl, oxadiazolidinyl, oxazolinyl, oxazolidinyl, oxetanyl, oxepanyl, oxocanyl, piperazinyl, piperidinyl, pyranyl, pyrazolinyl, pyrazolidinyl, pyrrolinyl, pyrrolidinyl, tetrahydrofuranyl, tetrahydropyranyl, tetrahydropyridinyl, tetrahydrothienyl, thiadiazolinyl, thiadiazolidinyl, 1,2-thiazinanyl, 1,3-thiazinanyl, thiazolinyl, thiazolidinyl, thiomorpholinyl, 1,1-dioxidothiomorpholinyl (thiomorpholine sulfone), thiopyranyl, and trithianyl. The bicyclic heterocycle is a monocyclic heterocycle fused to a 6-membered arene, or a monocyclic heterocycle fused to a monocyclic cycloalkan.e, or a nionocyclic heterocycle fused to a monocyclic cycloalkene, or a monocyclic heterocycle fused to a monocyclic heterocycle, or a monocyclic heterocycle fused to a monocyclic heteroarene, or a spiro heterocycle group, or a bridged monocyclic heterocycle ring system in which two non-adjacent atoms of the ring are linked by an alkylene bridge of 1, 2, 3, or 4 carbon atoms, or an alkenylene bridge of two, three, or four carbon atoms. The bicyclic heterocyclyi is attached to the parent molecular moiety at a non-aromatic ring atom (e.g., indolin-1-yl), Representative examples of bicyclic heterocyclyls include, but are not limited to, chroman-4-yl, 2,3-dihydrobenzofuran-2-yl, 2,3-dihydrobenzothien-2-yl, 1,2,3,4-tetrahydroisoquinolin-2-yl, 2-azaspiro[3,3]heptan-2-yl, 2-oxa-6-azaspiro[3.3]heptan-6-yl, azabicyclo[2.2.1]heptyl (including 2-azabicyclo[2.2.1]hept-2-yl), azabicyclo[3.1.0]hexanyl (including 3-azabicyclo[3.1.0]hexan-3-yl), 2,3-dihydro-1H-indol-1-yl, isoindolin-2-yl, octahydrocyclopenta[c]pyrrolyl, octahydropyrrolopyridinyl, tetrahydroisoquinolinyl, 7-oxabicyclo[2.2.1]heptanyl, hexahydro-2H-cyclopenta[b]furanyl, 2-oxaspiro[3.3]heptanyl, and 3-oxaspiro[5.5]undecanyl. Tricyclic heterocycles are exemplified by a bicyclic heterocycle fused to a 6-membered arene, or a bicyclic heterocycle fused to a monocyclic cycloalkane, or a bicyclic heterocycle fused to a monocyclic cycloalkene, or a bicyclic heterocycle fused to a monocyclic heterocycle, or a bicyclic heterocycle in which two non-adjacent atoms of the bicyclic ring are linked by an alkylene bridge of 1, 2, 3, or 4 carbon atoms, or an alkenylene bridge of two, three, or four carbon atoms. Examples of tricyclic heterocycles include, but are not limited to, octahydro-2,5-epoxypentalene, hexahydro-2H-2,5-methanocyclopenta[b]furan, hexahydro-1H-1,4-methanocyclopenta[c]furan, aza-adamantane (1-azatricyclo[3.3.1.13,7]decane), and oxa-adamantane (2-oxatricyclo[3.3.1.13,7]decane). The monocyclic, bicyclic, and tricyclic heterocyclyls are connected to the parent molecular moiety at a non-aromatic ring atom.
The term “hydroxyl” or “hydroxy,” as used herein, means an —OH group.
The term “hydroxyalkyl,” as used herein, means at least one —OH group, is appended to the parent molecular moiety through an alkylene group, as defined herein.
The term “hydroxyfluoroalkyl,” as used herein, means at least one —OH group, is appended to the parent molecular moiety through a fluoroalkyl group, as defined herein.
Terms such as “alkyl,” “cycloalkyl,” “alkylene,” etc. may be preceded by a. designation indicating the number of atoms present in the group in a particular instance (e.g., “C1-4alkyl,” “C3-6cycloalkyl,” “C1-4alkylene”). These designations are used as generally understood by those skilled in the art. For example, the representation “C” followed by a subscripted number indicates the number of carbon atoms present in the group that follows. Thus, “C3alkyl” is an alkyl group with three carbon atoms (i.e., n-propyl, isopropyl). Where a range is given, as in “C1-4,” the members of the group that follows may have any number of carbon atoms falling within the recited range. A “C1-4alkyl,” for example, is an alkyl group having from 1 to 4 carbon atoms, however arranged (i.e., straight chain or branched).
The term “substituted” refers to a group that may be further substituted with one or more non-hydrogen substituent groups. Substituent groups include, but are not limited to, halogen, ═O (oxo), ═S (thioxo), cyano, nitro, fluoroalkyl, alkoxyfluoroalkyl, fluoroalkoxy, alkyl, alkenyl, alkynyl, haloalkyl, haloalkoxy, heteroalkyl, cycloalkyl, cycloalkenyl, atyl, heteroaryl, heterocycle, cycloalkylalkyl, heteroarylalkyl, aid lalkyl, hydroxy, hydroxyalkyl, alkoxy, alkoxyalkyl, alkylene, aryloxy, phenoxy, benzyloxy, amino, alkylamino, acylamino, aminoalkyl, arylamino, sulfonylamino, sulfinylamino, sulfonyl, alkylsulfonyl, arylsulfonyl, aminosulfonyl, sulfinyl, —COOH, ketone, amide, carbamate, and acyl.
For compounds described herein, groups and substituents thereof may be selected in accordance with permitted valence of the atoms and the substituents, such that the selections and substitutions result in a stable compound, e.g., which does not spontaneously undergo transformation such as by rearrangement, cyclization, elimination, etc.
The term “mAChR M5 receptor negative allosteric modulator” as used herein refers to an agent that binds to an allosteric site on the M5 receptor and decreases the affinity and/or efficacy of acetylcholine, e.g., a noncompetitive inhibitor.
The term “allosteric, site” as used herein refers to a ligand binding site that is topographically distinct from the orthosteric binding site.
The term “orthosteric site” as used herein refers to the primary binding site on a receptor that is recognized by the endogenous ligand or agonist for that receptor. For example, the orthosteric site in the mAChR M5 receptor is the site that acetylcholine binds to. Compounds of the instant invention display both competitive and noncompetitive modes of M5 inhibition
For the recitation of numeric ranges herein, each intervening number there between with the same degree of precision is explicitly contemplated. For example, for the range of 6-9, the numbers 7 and 8 are contemplated in addition to 6 and 9, and for the range 6.0-7.0, the number 6.0, 6.1, 6.2, 6.3, 6.1, 6.5, 6.6, 6.7, 6.8, 6.9, and 7.0 are explicitly contemplated.
In one aspect, the invention provides compounds of formula (I), wherein G1, G2, L1, X, R5, m, and n are as defined herein.
Unsubstituted or substituted rings (i.e., optionally substituted) such as aryl, heteroaryl, etc, are composed of both a ring system and the ring system's optional substituents. Accordingly, the ring system may be defined independently of its substituents, such that redefining only the ring system leaves any previous optional substituents present. For example, a 5- to 12-membered heteroaryl with optional substituents may be further defined by specifying the ring system of the 5- to 12-membered heteroaryl is a 5- to 6-membered heteroaryl (i,e., 5- to 6-membered heteroaryl ring system), in which case the optional substituents of the 5- to 12-membered heteroaryl are still present on the 5- to 6-membered heteroaryl, unless otherwise expressly indicated.
In the following, embodiments of the invention are disclosed. The first embodiment is denoted E1, the second embodiment is denoted E1.1 and so forth.
E1. A compound of formula (I), or a pharmaceutically acceptable salt thereof,
E1.1. A compound of formula (1), or a pharmaceutically acceptable salt thereof,
R5a, at each occurrence, is independently hydrogen, C1-6alkyl, C1-6haloalkyl, C3-8cycloalkyl, or —C1-6alkylene-C3-8cycloalkyl, wherein the C3-8cycloalkyl in R5a is independently optionally substituted with 1-4 substituents independently selected from C1-4alkyl and halogen; and n is 0, 1, 2, 3, 4, or 5.
E1.2. A compound of formula (1), or a pharmaceutically acceptable salt thereof,
E2. The compound of any of E1-E1.2, or a pharmaceutically acceptable salt thereof, wherein G1 is the 5- to 12-membered heteroaryl.
E3. The compound of E2, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 5- to 12-membered heteroaryl at G1 is a 9- to 10-membered bicyclic heteroaryl ring system.
E3.1. The compound of E3, or a pharmaceutically acceptable salt thereof, wherein the 9- to 10-membered bicyclic ring system at G1 is a 9-membered fused bicyclic heteroaryl ring system having four double bonds and two to four nitrogen ring atoms, wherein one nitrogen atom occupies a position at the ring junction of the bicyclic ring system
E3.2. The compound of E3.1, or a pharmaceutically acceptable salt thereof, wherein the 9-membered fused bicyclic heteroaryl ring system at has three nitrogen ring atoms.
E3.3. The compound of E3.1 or E3.2, or a pharmaceutically acceptable salt thereof, wherein the 9-membered fused bicyclic heteroaryl ring system at G1 is attached to the parent molecular moiety at a first carbon atom in a 6-membered ring of the 9-membered fused bicyclic heteroaryl ring system.
E3.4. The compound of E3.3, or a pharmaceutically acceptable salt thereof, wherein the first carbon atom and the ring junction nitrogen atom are separated by one ring atom
E3.5. The compound of E3.4, or a pharmaceutically acceptable salt thereof, wherein the 9-membered fused bicyclic heteroaryl ring system at G1 may have the following ring system:
wherein x1-x6 represent carbon or nitrogen ring atoms, provided that 1-3 of x1-x6 are nitrogen atoms.
E3.6. The compound of E3.5, or a pharmaceutically acceptable salt thereof, wherein the ring system
is a ring system selected from
E3.7. The compound of E3.3. or a pharmaceutically acceptable salt thereof, wherein the first carbon atom and the ring junction nitrogen atom are separated by two ring atoms.
E3.8. The compound of E3.7, or a pharmaceutically acceptable salt thereof, wherein the 9-membered fused bicyclic heteroaryl ring system at G1 may have the following ring system
E4, The compound of E3, or a pharmaceutically acceptable salt thereof, wherein the 9- to 10-membered bicyclic heteroaryl ring system at G1 is benzimidazol-2-yl, benzimidazol-5-yl, furo[3,2-b]pyridin-5-yl, quinolin-4-yl, quinolin-6-yl, quinoxalin-6-yl, imidazo[1,2-a]pyridin-2-yl, imidazo[1,2-a]pytidin-6-yl, 3H-imidazo[4,5-b]pyridin-6-yl, pyrazolo[1,5-a]pyridin-6-yl, imidazo[1,2-a]pyrazin-6-yl, imidazo[1,2-b]pyridazin-2-yl, imidazo[1,2-b]pyridazin-6-yl, 1H-pyrazolo[4,3-c]pyridin-6-yl, 1H-pyrrolo[2,3-c]pyridin-5-yl, 1H-pyrrolo[3,2-c]pyridin-6-yl, 7H-pyrrolo[2,3-d]pyrimidin-2-yl, 5H-pyrrolo[2,3-b]pyrazin-2-yl, 7H-pyrrolo[2,3-c]pyridazin-3-yl, thiazolo[5,4-b]pyridin-2-yl, thieno[2,3-c]pyridin-2-yl, thieno[3,2-c]pyridin-2-yl, [1,2,4]triazolo[1,5-a]pyridin-6-yl, [1,2,4]triazolo[1,5-a]pyridin-7-yl, [1,2,4]triazolo[4,3-a]pyridin-6-yl, [1,2,4]triazolo[1,5-b]pyridazin-6-yl, [1,2,4]triazolo[1,5-a]pyrimidin-6-yl, or 5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-3-yl. Preferably, the 9- to 10-membered bicyclic heteroaryl ring system is [1,2,4]triazolo[1,5-a]pyridin-6-yl.
E4.1. The compound of E3, or a pharmaceutically acceptable salt thereof, wherein the 9- to 10-membered bicyclic heteroaryl ring system at G1 is 2H-indazol-3-yl or 4,5,6,7-tetrahydro-2H-indazol-3-yl.
E5. The compound of any of E2-E4.1, or a pharmaceutically acceptable salt thereof, wherein G1 is optionally substituted with 1-3 substituents independently selected from the group consisting of C1-4alkyl, C1-4haloalkyl, halogen, C2-4alkenyl, —OC1-4alkyl, —OC1-4fluoroalkyl, —C(O)OR1a, —C(O)NR1aR1b, —C1-3alkylene-OH, and G1a; R1a and R1b, at each occurrence, are each independently hydrogen or C1-4alkyl; and G1a, at each occurrence, is independently a C3-4cycloalkyl or 5-membered heteroaryl containing 1-3 heteroatoms independently selected from O, N, and S (e.g., pyrazolyl such as pyrazol-3-yl) and optionally substituted with 1-2 C1-4alkyl. For example, the optional substituents may be any of methyl, ethyl, difluoromethyl, trifluoromethyl, fluoro, chloro, vinyl, methoxy, trifluoromethoxy, —C(O)OH, —C(O)N(CH3)2, —C(CH3)2—OH, cyclopropyl, or 1-methyl-1H-pyrazol-3-yl. In a further example, G1 may be
x1 and x3-x6 are as defined above (i.e., 1-3 of x1 and x3-x6 are nitrogen atoms), R1 is C1-4alkyl, C1-4haloalkyl, halogen, C2-4alkenyl, —OC1-4alkyl, —OC1-4fluoroalkyl, —C(O)OR1a, —C(O)NR1aR1b, —C1-3alkylene-OH, or G1a; R1a and R1b, at each occurrence, are each independently hydrogen or C1-4alkyl; and G1a, at each occurrence, is independently a C3-4cycloalkyl or 5-membered heteroaryl containing 1-3 heteroatoms independently selected from O, N, and S (e.g., pyrazolyl such as pyrazol-3-yl) and optionally substituted with 1-2 C1-4alkyl. For example, R1 may be any of methyl, ethyl, difluoromethyl, trifluoromethyl, fluoro, chloro, vinyl, methoxy, trifluoromethoxy, —C(O)OH, —C(O)N(CH3)2, —C(CH3)2—OH, cyclopropyl, or 1-methyl-1H-pyrazol-3-yl. Preferably, R1 is methyl, fluoro, or chloro. The formula
may be
such as
In a further example, G1 may be
x1 and x4-x6 are as defined above (i.e., 1-3 of x1 and x4-x6 are nitrogen atoms), and each R1 is independently C1-4alkyl or halogen. Preferably, each R1 is independently methyl or fluoro. The formula
may be
such as
such as
Preferably, x1 is C—H or N, x3 is C—H, C—CH3, C—F, C—Cl, or N; x4 is C—H or N; x5 is C—H, C—CH3, C—CHF2, C—CF3, or N; and x6 is C—H or N.
E5.1. The compound of any of E2-E4, or a pharmaceutically acceptable salt thereof, wherein G1 is
R1 is C1-4alkyl, C1-4haloalkyl, halogen, C2-4alkenyl, —OC1-4alkyl, —OC1-4fluoroalkyl, —C(O)OR1a, —C(O)NR1aR1b, —C1-3alkylene-OH, or G1a, and R1a and R1b, at each occurrence, are each independently hydrogen or C1-4alkyl, G1a is a C3-4cycloalkyl or 5-membered heteroaryl containing 1-3 heteroatoms independently selected from O, N, and S (eg., pyrazolyl such as pyrazol-3-yl) and optionally substituted with 1-2 C1-4alkyl; x1 is C—H or N; x3 is C—H, C—C1-4alkyl, C-halo, or N; x4 is C—H or N; x5 is C—H, C—C1-4alkyl, C—C1-4fluoroalkyl, or N; and x6 is C—H or N.
E5.2. The compound of E5.1, or a pharmaceutically acceptable salt thereof, wherein x1is C—H or N; x3 is C—H, C—CH3, C—F, C—Cl, or N; x4 is C—H or N; x5 is C—H, C—CH3, C—CHF2, C—CF3, or N; and x6 is C—H or N.
E5.3. The compound of E5.1 or E5.2, or a pharmaceutically acceptable salt thereof, wherein R1 is methyl, ethyl, fluoromethyl, chloromethyl, difluoromethyl, trifluoromethyl, fluoro, chloro, vinyl, methoxy, trifluorornethoxy, —C(O)OH, —C(O)N(CH3)2, —C(CH3)2-OH, cyclopropyl, or 1-methyl-1H-pyrazol-3-yl.
E5.4. The compound of any of E5.1.-E5.3, or a pharmaceutically acceptable salt hereof, wherein G1 is
E5.5. The compound of E5.4, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.5a. The compound of E5.4, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.6. The compound of E5.4 or 5.5a, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.6a. The compound of E5.6, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.6b. The compound of E5.6 or E5.6a, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.6c. The compound of any of E5.6-E5.6b, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.7. The compound of E5.1, or a pharmaceutically acceptable salt thereof, wherein G1 is
each R1 is independently C1-4alkyl or halogen; x1 is C—H or N; x4 is C—H or N; x5 is C—H, C—C1-4alkyl, C—C1-4fluoroalkyl, or N; and x6 is C—H or N.
E5.8. The compound of E5.7, or a pharmaceutically acceptable salt thereof, wherein x1 is C—H or N; x4 is C—H or N; x5 is C—H, C—CH3, C—CHF2, C—CF3, or N; and x6 is C—H or N.
E5.9. The compound of E5.7 or E5.8, or a pharmaceutically acceptable salt thereof, wherein, each R1 is independently methyl or fluoro.
E5.10. The compound of E5.7 or E5.8, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.11. The compound of E5.10, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.12. The compound of E5.10, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.13. The compound of E5.12, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.14. The compound of any of E2-E4, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.15. The compound of E5.14, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.16, The compound of E5.14, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.17. The compound of E5.15, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.18. The compound of E5.17, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.19. The compound of E5.18, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.20, The compound of E5.19, or a pharmaceutically acceptable salt thereof, wherein
E5.21. The compound of E5.19, or a pharmaceutically acceptable salt thereof, wherein
E5.22. The compound of any of E2.-E4, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.23. The compound of E5.22, or a pharmaceutically acceptable salt thereof, whereien G1 is
E5.24. The compound of any of E2-E4.1, or a pharmaceutically acceptable salt thereof, wherein G1 is
E5.25. The compound of E5.24, or a pharmaceutically acceptable salt thereof, whereien G1 is
E6. The compound of E2, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 5- to 12-membered heteroaryl at G1 is a 5- to 6-membered heteroaryl ring system.
E7. The compound of E6, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered heteroaryl ring system at G1 is 1H-pyrazol-5-yl, 1,2,3-triazol-4-yl, thiazol-2-yl, thiazol-4-yl, pyridin-2-yl, pyridin-3-yl, pyridin-4-yl, or pyridazin-5-yl.
E8. The compound of any of E2, E6, or E7, or a pharmaceutically acceptable salt thereof, wherein G1 is optionally substituted with 1-3 substituents independently selected from the group consisting of cyano, C1-4alkyl, C1-4haloalkyl, —C(O)NR1aR1b, —NR1aR1b, and G1a; R1a and R1b, at each occurrence, are each independently hydrogen, C1-4alkyl, G1a, or —C1-3alkylene-G1a; and G1a, at each occurrence, is independently a 6- to 12-membered aryl (e.g., phenyl) or a 5- to 12-membered heteroaryl (e.g., furanyl such as furan-2-yl; benzothiazolyl such as benzothiazo1-5-yl). For example, the optional substituents may be any of cyano, methyl, trifluoromethyl, —C(O)NH2, —NHCH2Ph, furan-2-yl, or benzothiazol-5-yl.
E8.1 The compound of any of E2 or E6-E8, or a pharmaceutically acceptable salt thereof, wherein G1 is
E8.2. The compound of E8.1, or a pharmaceutically acceptable salt thereof, wherein G1 is
E8.3. The compound of any of E2 or E6-E8, or a pharmaceutically acceptable salt thereof, wherein. G1 is
E8.4. The compound of E8.3, or a pharmaceutically acceptable salt thereof wherein G1 is
E9, The compound of any of E1-E1.2, or a pharmaceutically acceptable salt thereof, wherein G1 is the 6- to 12-membered aryl.
E10. The compound of E9, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 6- to 12-membered aryl at G1 is a 9- to 10-membered bicyclic aryl ring system.
E11. The compound of E10, or a pharmaceutically acceptable salt thereof, wherein the 9- to 10-membered bicyclic aryl ring system at G1 is a 5- or 6-membered heterocycle fused to a 6-membered aryl.
E12. The compound of E11, or a pharmaceutically acceptable salt thereof, wherein the 9- to 10-membered bicyclic aryl ring system at is 1,3-benzodioxo1-5-yl, 2,3-dihydrobenzo[b][1,4]dioxin-6-yl, or 3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl. The 9- to 10-membered bicyclic aryl ring system may be substituted with 1-3 substituents independently selected from the group consisting of C1-4alkyl and halogen. For example, the substituents may be any of methyl, fluoro, or chloro.
E12.1 The compound of E11 or E12, or a pharmaceutically acceptable salt thereof, wherein G1 is
For example, G1 may be
E12.2 The compound of E9, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 6- to 12-membered aryl at G1 is a phenyl ring. The phenyl may be substituted with 1-3 substituents independently selected from C1-4alkyl, C1-4haloalkyl, and halogen.
E12.3 The compound of E12.2, or a pharmaceutically acceptable salt thereof, wherein G1 is
which in turn may be
In particular, the halo may be independently chloro or fluoro. For example, the optionally substituted phenyl may be
E13. The compound of any of E5.14, E8.2, E12.1, or E12.3, or a pharmaceutically acceptable salt thereof.
E13.1. The compound of any of E5.14, E5.20, E5.21, E.5.23, E5.25, E8.2, E12.1, or E12.3, or a pharmaceutically acceptable salt thereof.
E14. The compound of any of E1-E13.1, or a pharmaceutically acceptable salt thereof, wherein G2 is the 6- to 12-membered aryl.
E15. The compound of E14, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 6- to 12-membered aryl of G2 is a 9- to 12-membered aryl ring system,
E16. The compound of E15, or a pharmaceutically acceptable salt thereof, wherein the 9- to 12-membered aryl ring system at G2 is 1,3-benzodioxol-5-yl, 2,3-dihydroberizofuran-5-yl, 2,3-dihydro-1.4-benzodioxin-6-yl, 1,4-benzoxazin-6-yl, or chroman-6-yl.
E17. The compound of any of E14-E16, or a pharmaceutically acceptable salt thereof, wherein G2 is optionally substituted with 1-3 substituents independently selected from the group consisting of halogen and C1-4alkyl. For example, the 1-3 substituents may be any of methyl, fluoro, or chloro.
E18. The compound of E17, or a pharmaceutically acceptable salt thereof, wherein G2 is
E18.1. The compound of E18, or a pharmaceutically acceptable salt thereof, wherein G2 is
E18.2, The compound of E18.1, or a pharmaceutically acceptable salt thereof, wherein G2 is
E18.3, The compound of E18.2, or a pharmaceutically acceptable salt thereof, wherein
E19. The compound of any of E1-E13.1, or a pharmaceutically acceptable salt thereof, wherein G2 is the 5- to 12 membered heteroaryl.
E20. The compound of E19, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 5- to 12 membered heteroaryl of G2 is an 8- to 10-membered bicyclic heteroaryl ring system containing 1-3 heteroatoms. The 1-3 heteroatoms may be any of oxygen, nitrogen, or sulfur.
E20.1. The compound of E20, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10-membered bicyclic heteroaryl ring system at G2 is a 5-membered heteroaryl containing two nitrogen ring atoms and fused to a C5-7cycloalkane.
E20.2. The compound of E20, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10-membered bicyclic heteroaryl ring system at G2 is a 5-membered heteroaryl containing two nitrogen ring atoms and fused to a 5- to 7-membered heterocycle.
E20.3. The compound of E20.1 or E20.2, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is a pyrazolyl.
E20.4. The compound of any of E20.1-E20.3, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10-membered bicyclic heteroaryl ring system at G2 has a nitrogen atom at the ring junction.
E20.5. The compound of E20.4, or a pharmaceutically acceptable salt thereof, wherein the ring junction nitrogen atom is the only heteroatom in the ring fused to the 5-membered heteroaryl containing two nitrogen ring atoms
E20.6. The compound of any of E20.3-E20.5, wherein the 5-membered heteroaryl is a. pyrazol-3-yl. For example, the 8- to 10 membered bicyclic heteroaryl ring system of G2 may have the following formula:
E21. The compound of E20, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10 membered bicyclic heteroaryl ring system of G2 is indazol-5-yi, 1H-benzo[d]imidazol-5-yl, benzotriazol-5-yl, benzothiazol-6-yl, benzo[c][1,2,5]oxadiazol-4-yl, 2H-indazol-3-yl, 2H-indazol-4-yl, 2,3-dihydrofuro[2,3-b]pyridin-5-yl, 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl, 6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-3-yl, 4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-3-yl, pyrazolo[1,5-a]pyridin-3-yl, 5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-3-yl, imidazo[1,2-a]pyridin-3-yl, 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-3-yl, pyrazolo[5,1-b][1,3]oxazin-3-yl, pyrazolo[1,5-a]pyrimidin-3-yl, imidazo[2,1-b]thiazol-5-yl, or quinolin-6-yl. Preferably the 8- to 10 membered bicyclic I′leteroaryl ring system of G2 is 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl.
E22. The compound of any of E19-E21, or a pharmaceutically acceptable salt thereof, wherein G2 is optionally substituted with 1-3 substituents independently selected from the group consisting of C1-4alkyl and halogen. For example, the 1-3 substituents may be any of methyl or chloro.
E23. The compound of E22, or a pharmaceutically acceptable salt thereof, wherein G2 is
E23.1. The compound of E23, or a pharmaceutically acceptable salt thereof, wherein G2 is
E23.2. The compound of E23.1, or a pharmaceutically acceptable salt thereof, wherein G2 is
E23.3. The compound of E22, or a pharmaceutically acceptable salt thereof, wherein G2 is
E24. The compound of E14, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 6- to 12-membered aryl of G2 is a phenyl ring.
E25. The compound of E24, or a pharmaceutically acceptable salt thereof, wherein the phenyl ring is optionally substituted with 1-5 substituents independently selected from the group consisting of halogen, C1-4alkyl, C1-4fluoroalkyl, cyano, —OR2a, and G2a, wherein G2ais a 5-membered heteroaryl containing 1-3 heteroatoms independently selected from N, O, and S (e.g, isoxazolyl such as isoxazol-5-yl). The 1-5 substituents may be any of methyl, trifluoromethyl, methoxy, fluoro, or isoxa.zol-5-yl. The 1-5 substituents may be 1-2 substituents.
E26. The compound of E25, or a pharmaceutically acceptable salt thereof, wherein G2 is
For example. G2 may be
For example, G may be
E27. The compound of E19, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 5- to 12-membered heteroaryl of G2 is a 5- to 6-membered monocyclic heteroaryl ring system. The 5- to 6-membered heteroaryl ring system may have 1-3 ring heteroatoms independently selected from oxygen, nitrogen, and sulfur. Preferably, the 5- to 6-membered heteroaryl ring system has 1-2 ring heteroatoms independently selected from nitrogen and sulfur.
E28. The compound of E27, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered monocyclic heteroaryl ring system is pyridinyl, pyrazolyl, thiazolyl, imidazolyl, or thienyl. Preferably, the ring system is pyrazol-3-yl or thiazol-5-yl.
E29. The compound of E27 or E28, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered monocyclic heteroaryl ring system is optionally substituted with 1-3 substituents independently selected from the group consisting of halogen, cyano, C1-4alkyl, C1-4fluoroalkyl, C3-4cycloalkyl, —OR2a, and —C1-3alkylene-Y2; wherein Y2, at each occurrence, is independently —OC1-4alkyl or cyano.
E29.1. The compound of E29, or a pharmaceutically acceptable salt thereof, wherein the 1-3 substituents may be any of methyl, ethyl, difluoromethyl, trifluoromethyl, fluoro, chloro, methoxy, cyano, CH2CN, ——CH2OCH3, cyclopropyl, or phenyl.
E29.2. The compound of E29.1, or a pharmaceutically acceptable salt thereof, wherein a methyl substituent may be CD3.
E30. The compound of E29, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.1. The compound of E30, or a pharmaceutically acceptable salt thereof, wherein
E30.2. The compound of E30.1, or a pharmaceutically acceptable salt thereof, wherein at G2,
may be
may be
may be
may be
may be
may be
may be
may be
may be
E30.3. The compound of E30, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.4. The compound of E30.3, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.5. The compound of E27, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered monocyclic heteroaryl ring system at G2 is isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazolyl, thiazolyl, 1,2,4-triazolyl, 1,2,3-triazolyl, 1,3,4-thiadiazolyl, 1,3,4-oxadiazolyl, 1,2,4-thiadiazolyl, imidazolyl, or thienyl.
E30.6, The compound of E30.5, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered monocyclic heteroaryl ring system at G2 is isothiazol-5-yl, oxazol-5-yl, isoxazol-4-yl, pyrazol-3-yl, thiazol-5-yl, 1,2,4-triazol-3-yl, 1,3,4-thiadiazol-2-yl, 1,2,3-triazol-4-yl, 1,3,4-oxadiazol-2-yl, or 1,2,4-thiadiazol-5-yl.
E30.7. The compound of any of E27, E30.5, or E30.6, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered monocyclic heteroaryl ring system at G2 is optionally substituted with 1-3 substituents independently selected from the group consisting of halogen, cyano, C1-4alkyl, C1-4fluoroalkyl, OC1-4alkyl, G2a, —C1-3alkylene-G2a, and —C1-3alkylene-Y2; Y2, at each occurrence, is independently —OH, —OC1-4alkyl, cyano, NH2, —NHC(O)C1-4alkyl, —NHC(O)C1-3alkylene-Y3, or —NHC(O)C0-3alkylene-G2b; Y3, at each occurrence, is independently —OH, —OC1-4alkyl, or —OC1-4haloalkyl; G2a is C3-4cycloalkyl, a 4- to 8-membered monocyclic heterocyclyl containing 1-2 heteroatoms independently selected from N, O, and S, a 2-oxopyrrolidin-1 fused to a pyridine or 6-membered arene, or a 5- to 6-membered heteroaryl containing 1-3 heteroatoms independently selected from N, O, and S, and optionally substituted with C1-4alkyl; and G2b is a 5- to 6-membered heteroaryl containing 1-3 heteroatoms independently selected from N, O, and S.
E30.8. The compound of E30.7, or a pharmaceutically acceptable salt thereof, wherein the 5- to 6-membered monocyclic heteroaryl ring system at G2 is optionally substituted with 1-3 substituents independently selected from the group consisting of fluoro, chloro, bromo, cyano, C1-4alkyl, C1-2fluoroalkyl, —OC1-4alkyl, G2a, —C1-3alkylene-G2a, and —C1-3alkylene-Y2; Y2, at each occurrence, is independently —OH, —OC1-4alkyl, cyano, NH2, —NHC(O)C1-4alkyl, —NHC(O)CH2—Y3, or —NHC(O)G2b; Y3, at each occurrence, is independently —OC1-4alkyl; G2a is C3-4cycloalkyl, a 4- to 8-membered monocyclic heterocyclyl containing a ring nitrogen atom and optionally a second ring heteroatom selected from N, O, and S, a 5-oxo-5,7-dihydro-6H-pyrrolo[3,4-b]pyridin-6-yl, or a 5- to 6-membered heteroaryl containing 1-3 heteroatoms independently selected from N, O, and S, and optionally substituted with C1-4alkyl; and G2b is a 5- to 6-membered heteroaryl containing 1-3 heteroatoms independently selected from N, O, and S.
E30.9. The compound of any of E30.5-E30.8, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.10. The compound of E30.9, or a pharmaceutically acceptable salt thereof, wherein G7 is
E30.11. The compound of E30.4, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.12. The compound of E30.11, or a pharmaceutically acceptable salt thereof, wherein
E30.13. The compound of E30.10, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.14. The compound of E30.13, or a pharmaceutically acceptable salt thereof, wherein
E30.15. The compound of E30.9, or a phartnaceutically acceptable salt thereof, wherein G2 is
E30.16. The compound of E30.15, or a pharmaceutically acceptable salt thereof, wherein
E30.17, The compound of E30.10, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.18. The compound of E30.17, or a pharmaceutically acceptable salt thereof, wherein
E30.19. The compound of E27 or E30.5, or a pharmaceutically acceptable salt thereof, wherein G2 is
E30.20. The compound of E30.19, or a pharmaceutically acceptable salt thereof, wherein G2 is
E31. The compound of any of E1-E30.20, or a pharmaceutically acceptable salt thereof, wherein L1 is SO2.
E32. The compound of any of E1-E31, or a pharmaceutically acceptable salt thereof, wherein each R5 is independently halogen, cyano, oxo, C1-6alkyl, C1-6haloalkyl, —OR5a, or C3-8cycloalkyl. Each independent R5 may be halogen, cyano, C1-4fluoroalkyl, OH or —OC1-4alkyl. For example, R5 may be fluoro, cyano, methyl, trifluoromethyl, OH, or OCH3.
E32.1. The compound of E32, or a pharmaceutically acceptable salt thereof, wherein R5 is fluoro.
E33. The compound of any of E1-E32.1, or a pharmaceutically acceptable salt thereof, wherein n is 1 or 2.
E34. The compound of any of E1-E32.1, or a pharmaceutically acceptable salt thereof, wherein n is 0.
E35. The compound of any of E1-E31, or a pharmaceutically acceptable salt thereof, wherein X is a carbon atom; m is 1; and two R5 are substituted on non-adjacent ring atoms and taken together with atoms to which they attach, form a C1-3alkylene bridge.
E36. The compound of E35, or a pharmaceutically acceptable salt thereof, wherein the non-adjacent ring atoms flank the ring nitrogen atom (e.g., formula (I-G)).
E37. The compound of E35 or E36, or a pharmaceutically acceptable salt thereof, wherein n is 2.
E38. The compound of any of E1-E34, or a pharmaceutically acceptable salt thereof, wherein m is 0.
E39. The compound of any of E1-E34, or a pharmaceutically acceptable salt thereof, wherein m is 1.
E40. The compound of any of E1-E39, or a pharmaceutically acceptable salt thereof, wherein X is a carbon atom.
E41. The compound of E40, or a pharmaceuticallyacceptable salt thereof, wherein “” is a single bond.
E42. The compound of E40, or a pharmaceuticallyacceptable salt thereof, wherein “” is a double bond.
E43. The compound of any of E1-E34 or E39, or a pharmaceutically acceptable salt thereof, wherein X is a nitrogen atom.
E44. The compound of any of E1-E32.1, or a pharmaceutically acceptable salt thereof, wherein the compound of formula (I) has formula (I-A), (I-A1), (I-B), (I-C), (I-D) (I-E), (I-F), (I-G), (I-H), (I-J), or (I-K)
may have trans relative stereochemistry at R5 and G1, as in
may have exo or endo relative stereochemistry, as in
may have (R) or (S) stereochemistry as in
E44.1, The compound of any of E1-E44, or a pharmaceutically acceptable salt thereof, of any of the following formulas:
E45, In any of embodiments E1-E44.1, R1a, R1b, R1c, R2a, R2b, R2c, at each occurrence, may each be independently hydrogen, methyl, ethyl, difluoromethyl, trifluoromethyl, cyclopropyl, cyclobutyl, —CH2-cyclopropyl, or —CH2 cyclobutyl. In any of embodiments E1-E45, R1d and R2d, at each occurrence, may each be independently methyl, ethyl, difluoromethyl, trifluoromethyl, cyclopropyl, cyclobutyl, —-CH2-cyclopropyl, or —CH2-cyclobutyl.
E46. In any of embodiments E1-E44.1, haloalkyl may be fluoroalkyl.
E47. A compound selected from Table 10, or a pharmaceutically acceptable salt thereof.
E48. In another aspect, the invention provides compounds of formula (I-A)
or a pharmaceutically acceptable salt thereof, wherein
Y1 and Y2, at each occurrence, are independently —OC1-4alkyl, —OC1-4haloalkyl, OH, NH2, —NHC1-4alkyl, —N(C1-4alkyl)2, cyano, —C(O)OC1-4alkyl, —C(O)NH2, —C(O)NHC1-4alkyl, or —C(O)N(C1-4alkyl)2.
E48.1. In another aspect, the invention provides compounds of formula (I)
E48.2. The compound of E48.1 of formula (I-D1), or a pharmaceutically acceptable salt thereof, wherein R5.1 is hydrogen or fluoro
E48.3, The compound of E48.2, or a pharmaceutically acceptable salt thereof, wherein R5.1 is fluoro,
E48.4, The compound of E48.2, or a pharmaceutically acceptable salt thereof, wherein R5.1 is hydrogen (i.e., formula (I-A).
E48.5. The compound of E48.1, or a pharmaceutically acceptable salt thereof, wherein formula (I) is any of the formulas of E44 or E44.1.
E49. The compound of any of E48-E48.5, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 9-membered fused bicyclic heteroaryl at G1 has three nitrogen ring atoms.
E50. The compound of any of E48-E49, or a pharmaceutically acceptable salt thereof, wherein the first carbon atom of G1 is in a 6-membered ring of the 9-membered fused bicyclic heteroaryl ring system.
E51. The compound of E50, or a pharmaceutically acceptable salt thereof, wherein the first carbon atom and the ring junction nitrogen atom are separated by one ring atom.
E51.1. The compound of E50, or a pharmaceutically acceptable salt thereof, wherein the first carbon atom and the ring junction nitrogen atom are separated by two ring atoms.
E51.2. The compound of E51.1, or a pharmaceutically acceptable salt thereof, wherein the ring system of the 9-membered fused bicyclic heteroaryl at G1 is
E52. The compound of E51, or a pharmaceutically acceptable salt thereof, wherein the ring system of G1 has the following ring system:
wherein x1-x6 independently represent carbon or nitrogen ring atoms, provided that 1-3 of x1-x6 are nitrogen atoms.
E53. The compound of E52, or a pharmaceutically acceptable salt thereof, wherein the ring system
is a ring system selected from
E54, The compound of E53, or a pharmaceutically acceptable salt thereof, wherein the ring system
is the ring system
E55. The compound of E52, or a pharmaceutica acceptable salt thereof, wherein G1 is
x1, x3, x4, x5, and-x6 are N or CH, R1 is C1-4alkyl, C1-4haloalkyl, halogen, C2-4alkenyl, —OC1-4alkyl, —OC1-4fluoroalkyl, —C(O)OR1, —C(O)NR1aR1b, —C1-3alkylene—OH, or G1a; R1a and R1b, at each occurrence, are each independently hydrogen or C1-4alkyl; and G1a, at each occurrence, is independently a C3-4cycloalkyl or 5-membered heteroaryl containing 1-3 heteroatoms independently selected from O, N, and S (e.g., pyrazolyl such as pyrazol-3-yl) and optionally substituted with 1-2 C1-4alkyl.
E56, The compound of E55, or a pharmaceutically acceptable salt thereof, wherein R1 is methyl, ethyl, difluoromethyl, trifluoromethyl, fluoro, chloro, vinyl, methoxy, trifluoromethoxy, —C(O)OH, C(O)N(CH3)2, —C(CH3)2—OH, cyclopropyl, or 1-methyl-1H-pyrazol-3-yl.
E57. The compound of E56, or a pharmaceutically acceptable salt thereof, wherein R1 is methyl, fluoro, or chloro.
E58. The compound of any of E55-E57, or a pharmaceutically acceptable salt thereof, wherein G1 is
E59. The compound of E58, or a pharmaceutically acceptable salt thereof, wherein G1 is
E59.1. The compound of E58, or a pharmaceutically acceptable salt thereof, wherein G1 is
E60, The compound of E59.1, or a pharmaceutically acceptable salt thereof, wherein G1 is
E60.1. The compound of E60, or a pharmaceutically acceptable salt thereof, wherein G1 is
E61. The compound of E52, or a pharmaceutically acceptable salt thereof, wherein G1 is
x1 and x4-x6 are N or CH, and each R1 is independently C1-4alkyl or halogen.
E62. The compound of E61, or a pharmaceutically acceptable salt thereof, wherein each R1 is independently methyl or fluoro.
E63. The compound of E61 or E62, or a pharmaceutically acceptable salt thereof, wherein G1 is
E64, The compound of E63, or a pharmaceutically acceptable salt thereof, wherein G1 is
E65. The compound of E63, or a pharmaceutically acceptable salt thereof, wherein G1 is
E66. The compound of E64 or E65, or a pharmaceutically acceptable salt thereof, wherein G1 is
E66.1. The compound of any of E48-E48.5, or a pharmaceutically acceptable salt thereof, wherein G1 is as defined in any of E3.5-E3.8, E5.1-E5.13, or E5.16-E5.23.
E67. The compound of any of E48-E66.1, or a pharmaceutically acceptable salt thereof, wherein G2 is the 5- to 12-membered heteroaryl and the ring system of the 5- to 12-membered heteroaryl at G2 is an 8- to 10 membered bicyclic heteroaryl ring system.
E68. The compound of E67, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10 membered bicyclic heteroaryl ring system at G2 is a 5-membered heteroaryl containing two nitrogen ring atoms and fused to a C5-7cycloalkane.
E68.1. The compound of E67, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10 membered bicyclic heteroaryl ring system at G2 is a 5-membered heteroaryl containing two nitrogen ring atoms and fused to a 5- to 7-membered heterocycle.
E69. The compound of E68 or E68.1, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is a pyrazolyl.
E70. The compound of any of E68-E69, or a pharmaceutically acceptable salt thereof, wherein the 8- to 10-membered bicyclic heteroaryl ring system at G2 has a nitrogen atom at the ring junction.
E70.1. The compound of E70, or a pharmaceutically acceptable salt thereof, wherein the ring junction nitrogen atom is the only heteroatom in the ring fused to the 5-membered heteroaryl containing two nitrogen ring atoms
E71. The compound of any of E69-E70.1, wherein the 5-membered heteroaryl is a pyrazol-3-yl.
E72. The compound of E71, or a pharmaceutically acceptable salt thereof, wherein G2 is
E73. The compound of E72, or a pharmaceutically acceptable salt thereof, wherein G2 is
E74. The compound of any of E48-E66.1., or a pharmaceutically acceptable salt thereof, wherein the ring system of the 5- to 12-membered heteroaryl at G2 is a 5-membered heteroaryl containing 1-2 ring heteroatoms independently selected from nitrogen and sulfur.
E75. The compound of E74, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is pyrazolyl or thiazolyl.
E76. The compound of E75, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is pyrazol-3-yl.
E77. The compound of E76, or a pharmaceutically acceptable salt thereof, wherein G2 is
E78. The compound of E77, or a pharmaceutically acceptable salt thereof, wherein G2 is
E79. The compound of E75, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is thiazol-5-yl,
E80. The compound of E79, or a pharmaceutically acceptable salt thereof, wherein G2 is
E81. The compound of E80, or a pharmaceutically acceptable salt thereof, wherein G2 is
E81.1. The compound of any of E48-E66.1., or a pharmaceutically acceptable salt thereof, wherein G2 is as defined in any of E14-E30.18.
E81.2. The compound of any of E48-E66.1., or a pharmaceutically acceptable salt thereof, wherein the ring system of the 5- to 12-membered heteroaryl at G2 is a 5-membered heteroaryl containing 1-2 ring heteroatoms independently selected from nitrogen and oxygen.
E81.3. The compound of E81.2, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is oxazolyl.
E81.4. The compound of E81.3, or a pharmaceutically acceptable salt thereof, wherein the 5-membered heteroaryl is oxazol-5-yl.
E81.5. The compound of E81.4, or a pharmaceutically acceptable salt theeof, wherein G2 is
E81.6. The compound of E81.5, or a pharmaceutically acceptable salt thereof, wherein G2 is
E82. The compound of any of E1-E81.6 of formula
or a pharmaceutically acceptable salt thereof.
E83. The compound of any of E1-E82 of formula
(I-A1), or a pharmaceutically acceptable salt thereof.
Compound names and/or structures can be assigned/determined by using the Struct=Name naming algorithm as part of CHEMDRAW® ULTRA.
The compound may exist as a stereoisomer wherein asymmetric or chiral centers are present. The stereoisomer is “R” or “S” depending on the configuration of substituents around the chiral carbon atom. The terms “R” and “ES”' used herein are configurations as defined in IUPAC 1974 Recommendations for Section E, Fundamental Stereochemistry, in Pure Appl. Chem., 1976, 45: 13-30. The disclosure contemplates various stereoisomers and mixtures thereof and these are specifically included within the scope of this invention. Stereoisomers include enantiomers and diastereomers, and mixtures of enantiomers or diastereomers. Individual stereoisomers of the compounds may be prepared synthetically from commercially available starting materials, which contain asymmetric or chiral centers or by preparation of racemic mixtures followed by methods of resolution well-known to those of ordinary skill in the art. These methods of resolution are exemplified by (1) attachment of a mixture of enantiomers to a chiral auxiliary, separation of the resulting mixture of diastereomers by recrvstallization or chromatography and optional liberation of the optically pure product from the auxiliary as described in Furniss, Hannaford, Smith, and Tatchell, “Vogel's Textbook of Practical Organic Chemistry,” 5th edition (1989), Longman Scientific & Technical, Essex CM20 2JE, England, or (2) direct separation of the mixture of optical enantiomers on chiral chromatogra.phic columns, or (3) fractional recrystallization methods.
In the compounds of formula (I), and its subformulas, any “hydrogen” or “H,” whether explicitly recited or implicit in the structure, encompasses hydrogen isotopes 1H (protium) and 2H (deuterium).
The present disclosure also includes an isotopically-labeled compound, which is identical to those recited in formula (I), but for the fact that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature. Examples of isotopes suitable for inclusion in the compounds of the invention are hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, fluorine, and chlorine, such as, but not limited to 2H, 3H, 13C, 14C, 15N, 18O, 17O, 31P, 32P, 35S, 18F, and 36Cl, respectively. Substitution with heavier isotopes such as deuterium, i.e. 2H, can afford certain therapeutic advantages resulting from greater metabolic stability, for example increased in vivo half-life or reduced dosage requirements and, hence, may be preferred in some circumstances. The compound may incorporate positron-emitting isotopes for medical imaging and positron-emitting tomography (PET) studies for determining the distribution of receptors. Suitable positron-emitting isotopes that can be incorporated in compounds of formula (I) are 11C, 13N, 15O, and 18F. Isotopically-labeled compounds of formula (I) can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described in the accompanying Examples using appropriate isotopically-labeled reagent in place of non-isotopically-labeled reagent.
a. Pharmaceutically Acceptable Salts
The disclosed compounds may exist as pharmaceutically acceptable salts. The term “pharmaceutically acceptable salt” refers to salts or zwitterions of the compounds which are water or oil-soluble or dispersible, suitable for treatment of disorders without undue toxicity, irritation, and allergic response, commensurate with a reasonable benefit/risk ratio and effective for their intended use. The salts may be prepared during the final isolation and purification of the compounds or separately by reacting an amino group of the compounds with a suitable acid. For example, a compound may be dissolved in a suitable solvent, such as but not limited to methanol and water and treated with at least one equivalent of an acid, like hydrochloric acid. The resulting salt may precipitate out and be isolated by filtration and dried under reduced pressure. Alternatively, the solvent and excess acid may be removed under reduced pressure to provide a salt. Representative salts include acetate, adipate, alginate, citrate, aspartate, benzoate, benzenesulfonate, bisulfate, butyrate, camphorate, camphorsulfonate, digluconate, glycerophosphate, hemisulfate, heptanoate, hexanoate, formate, isethionate, fumarate, lactate, maleate, methanesulfonate, naphthylenesulfonate, nicotinate, oxalate, pamoate, pectinate, persulfate, 3-phenylpropionate, picrate, oxalate, maleate, pivalate, propionate, succinate, tartrate, trichloroacetate, trifluoroacetate, glutamate, para-toluenesulfonate, undecanoate, hydrochloric, hydrobromic, sulfuric, phosphoric and the like. The amino groups of the compounds may also be quatemized with alkyl chlorides, bromides and iodides such as methyl, ethyl, propyl, isopropyl, butyl, lauryl, myristyl, stearyl and the like.
Basic addition salts may be prepared during the final isolation and purification of the disclosed compounds by reaction of a carboxyl group with a suitable base such as the hydroxide, carbonate, or bicarbonate of a metal cation such as lithium, sodium, potassium, calcium, magnesium, or aluminum, or an organic primary, secondary, or tertiary amine. Quaternary amine salts can be prepared, such as those derived from methylamine, dimethylamine, trimethylamine, triethylatnine, diethylamine, ethylamine, tributylamine, pyridine, N,N-dimethylaniline, N-methylpiperidine, N-methylmorpholine, dicyclohexylamine, procaine, dibenzylamine, N,N-dibenzylphenethylamine, I-ephenamine and NN′-dibenzylethylenediamine, ethylenediamine, ethanolamine, diethanolamine, piperidine, piperazine, and the like.
b. General Synthesis
Compounds of formula (I) may be prepared by synthetic processes or by metabolic processes. Preparation of the compounds by metabolic processes includes those occurring in the human or animal body (in vivo) or processes occurring in vitro.
Abbreviations: Boc is tert-butyloxycarbonyl; Deoxo-Fluor® is bis(2-methoxyethyl)aminosulfur trifluoride; DMF is N,N-dimethylformamide; TFA is trifluoroacetic acid; and TMSCF3 is trifluoromethyltrimethylsilane.
Compounds of formula (I) can be synthesized as shown in the following schemes.
General Scheme 1 illustrates a synthetic route to provide compound A mono- or bi-cyclic aryl halide D can be coupled with a suitable substituted vinylboronic acid E-1 or ester E to provide compound F. Compound F can be subjected to a suitable olefin reduction process (e.g. hydrogenation, transfer hydrogenation, or hydroboration-protodeboronation reaction) to generate Boc-protected intermediate G, followed by Boc-deprotection (e.g. with either TFA or HCl) to generate compound H as a TFA or HCl salt. Compound H may be reacted with suitable sulfonyl chloride I to provide the final product J. During reduction of F to G, unsaturation in G1 may also be subject to reduction.
General Scheme 2 illustrates a reaction condition to form novel sulfonyl chloride I. Mono- or bicyclic aromatic or heterocyclic starting material K (i.e., G2) can be treated with SO3·DMF, followed by SOCl2 to form compound I.
General Scheme 3 illustrates a synthetic route to form novel pyrazole-based sulfonyl chlorides I-1-I2. A suitably substituted pyrazole L can be alkylated, allylated, or acylated under suitable basic conditions to form a mixture of regioisomers M and M-1, which can be reacted with SO3. DMF followed by SOCl2 to provide compounds I-1 and I-2.
General Scheme 4 illustrates a synthetic route to form a novel dihydrobenzofuran or aza-dihydrobenzofuran L-1. Ortho-halogenated phenol N can undergo a double alkylation processes under suitable basic conditions to provide compound L-1 via intermediate O, which can be used to form novel sulfonyl chlorides to provide additional compounds of the invention.
General Scheme 5 illustrates an alternative synthetic route to form a novel substituted dihydrobenzofuran or substituted aza-dihydrobenzofuran L-2. Ortho-brominated phenol N-1 can undergo an alkylation under suitable basic conditions, followed by a radical cycliza.tion process to provide compound L-2 via intermediate O-1, which can be used to form novel sulfonyl chlorides to provide additional compounds of the invention.
General Scheme 6 illustrates an alternative synthetic route to form a novel substituted dihydrobenzofuran or substituted aza-dihydrobenzofuran L-3. Aniline P can undergo a Sandtneyer reaction to provide compound L-3, which can be used to form novel sulfonyl chlorides to provide additional compounds of the invention.
General Scheme 7 illustrates a synthetic route to form a novel azole containing bicyclic heterocycle D-1 or D-2. Suitably substituted 2-amino-heterocycle Q can be cyclized via an appropriate cyclization condition to provide the bicyclic aryl halide D-1 and/or D-2.
General Scheme 8 illustrates a synthetic route to form 2-amino-heterocyclic compound Q4 or Q-2. Suitably amine-substituted heterocycle R-1 or R-2 can undergo an electrophilic aromatic substitution reaction to provide aryl halide Q-1 or Q-2, which can be used to form novel bi-cyclic aryl halides via the synthetic route illustrated in Scheme 7.
General Scheme 9 illustrates a synthetic route to form unsaturated Boc-protected cyclic amine U. Suitably substituted secondary alcohol S can undergo oxidation followed by an appropriate triflation process to give compound U, which can be used to form a novel amine-containing core to provide additional compounds of the invention.
General Scheme 10 illustrates a synthetic route to generate compounds V, V-1, W, or W-1. Suitable compound D or U can undergo a suitable borylation process to provide boronic ester or acid V, V-1, W, or W-1, which can be used for cross-coupling reactions to form additional compounds of the invention.
General Scheme 11 illustrates a synthetic route to generate compounds G-1. Inflate U and boronic acid V-1 or ester V can be coupled via appropriate cross-coupling; reaction conditions to provide compound F1, which can undergo a suitable olefin reduction process (e.g. hydrogenation, transfer hydrogenation, or hydroboration-protodeboronation reaction) to provide intermediate G-1.
General Scheme 12 illustrates a synthetic route to provide intermediate (±)-W-1, W-2, (±)-X-1, or X-2. Compound F can be hydroxylated via suitable hydroboration-oxidation processes to form compound (±)-W-1 and W-2. Compound (±)-W-1 and W-2 then can be deoxyfluorinated with a suitable reagent (i.e. DeoxoFluor®) to produce fluorinated compound (+)-X-1 or X-2.
Alternatively, substituted intermediate (±)-W1 or W-2 can be methylated under basic conditions to provide compound (±)-Y1 or Y-2 as shown in General Scheme 13.
General Scheme 14 illustrates a synthetic route to provide compound F-3. Compound F-2 can be difluoromethylated under the appropriate difluorocyclopropanation condition to form compound F-3, which can be used to form additional compounds of the invention.
As shown in General Scheme 15, a halogenated intermediate F-4 can be coupled with heterocyclic reagents via an appropriate cross-coupling reaction process to provide compound F-5, which can then undergo a suitable olefin-reduction process to produce compound F-6. During reduction, unsaturation in G1 or G1a may also be subject to reduction.
General Scheme 16 illustrates a synthetic route to provide intermediate F-10. Halogenated compound F-4 can be converted to vinylated intermediate F-9 via an appropriate Suzuki coupling reaction, Intermediate F-9 can then undergo cyclo-propanation via a suitable cyclo-propanation process, followed by a suitable olefin-reduction process to provide compound F-10.
As shown in General Scheme 17, sulfonyl chloride I can be coupled with substituted Boc-protected piperazine Z under basic condition to provide compound AA, which can be used to form additional compounds of the invention.
General Scheme 18 illustrates a synthetic route to provide intermediate AE. Suitably substituted aniline AB can be cyclized under appropriate cyclization conditions to provide compound AC, which then can be reacted with a substituted Boc-protected piperazine Z via either an SNAr or Buchwald coupling process to produce intermediate AD. Intermediate AD then can undergo Boc-deprotection under acidic conditions to produce compound AE as a TFA or HCl salt.
The compounds and intermediates may be isolated and purified by methods well-known to those skilled in the art of organic synthesis. Examples of conventional methods for isolating and purifying compounds can include, but are not limited to, chromatography on solid supports such as silica gel, alumina, or silica derivatized with alkylsilane groups, by recrystallization at high or low temperature with an optional pretreatment with activated carbon, thin-layer chromatography, distillation at various pressures, sublimation under vacuum, and trituration, as described for instance in “Vogel's Textbook of Practical Organic Chemistry,” 5th edition (1989), by Furniss, Hannaford, Smith, and Tatchell, pub. Longman Scientific & Technical, Essex CM20 2JE, England.
A disclosed compound may have at least one basic nitrogen whereby the compound can be treated with an acid to form a desired salt. For example, a compound may be reacted with an acid at or above room temperature to provide the desired salt, which is deposited, and collected by filtration after cooling. Examples of acids suitable for the reaction include, but are not limited to tartaric acid, lactic acid, succinic acid, as well as mandelic, atrolactic, methanesulfonic, ethanesulfonic, toluenesulfonic, naphthalenesulfonic, benzenesulfonic, carbonic, fumaric, maleic, gluconic, acetic, propionic, salicylic, hydrochloric, hydrobromic, phosphoric, sulfuric, citric, hydroxybutyric, camphorsulfonic, malic, phenylacetic, aspartic, or glutamic acid, and the like.
Reaction conditions and reaction times for each individual step can vary depending on the particular reactants employed and substituents present in the reactants used. Specific procedures are provided in the Examples section. Reactions can be worked up in the conventional manner, e.g. by eliminating the solvent from the residue and further purified according to methodologies generally known in the art such as, but not limited to, crystallization, distillation, extraction, trituration and chromatography. Unless otherwise described, the starting materials and reagents are either commercially available or can be prepared by one skilled in the art from commercially available materials using methods described in the chemical literature. Starting materials, if not commercially available, can be prepared by procedures selected from standard organic chemical techniques, techniques that are analogous to the synthesis of known, structurally similar compounds, or techniques that are analogous to the above described schemes or the procedures described in the synthetic examples section.
Routine experimentations, including appropriate manipulation of the reaction conditions, reagents and sequence of the synthetic route, protection of any chemical functionality that cannot be compatible with the reaction conditions, and deprotection at a suitable point in the reaction sequence of the method are included in the scope of the invention. Suitable protecting groups and the methods for protecting and deprotecting different substituents using such suitable protecting groups are well known to those skilled in the art; examples of which can be found in PGM Wuts and T W Greene, in Greene's book titled Protective Groups in Organic Synthesis (4th ed.), John Wiley & Sons, NY (2006), which is incorporated herein by reference in its entirety. Synthesis of the compounds of the invention can be accomplished by methods analogous to those described in the synthetic schemes described hereinabove and in specific examples.
When an optically active form of a disclosed compound is required, it can be obtained by carrying out one of the procedures described herein using an optically active starting material (prepared, for example, by asymmetric induction of a suitable reaction step), or by resolution of a mixture of the stereoisomers of the compound or intermediates using a standard procedure (such as chromatographic separation, recrystallization or enzymatic resolution).
Similarly, when a pure geometric isomer of a compound is required, it can be obtained by carrying out one of the above procedures using a pure geometric isomer as a starting material, or by resolution of a mixture of the geometric isomers of the compound or intermediates using a standard procedure such as chromatographic separation.
It can be appreciated that the synthetic schemes and specific examples as described are illustrative and are not to be read as limiting the scope of the invention as it is defined in the appended claims. All alternatives, modifications, and equivalents of the synthetic methods and. specific examples are included within the scope of the claims.
The compounds of the invention may be incorporated into pharmaceutical compositions suitable for administration to a subject (such as a patient, which may be a human or non-human). The compounds of the invention may also be provided as formulations, such as spray-dried dispersion formulations.
The pharmaceutical compositions may include a “therapeutically effective amount” or a “prophylactically effective amount” of the agent. A “therapeutically effective amount” refers to an amount effective, at single or multiple dosages and for periods of time necessary, to achieve the desired therapeutic result. A therapeutically effective amount of the composition may be determined by a person skilled in the art and may vary according to factors such as the disease state, age, sex, and weight of the individual, and the ability of the composition to elicit a desired response in the individual. A therapeutically effective amount is also one in which any toxic or detrimental effects of a compound of the invention (e.g., a compound of formula. (I) or a pharmaceutically acceptable salt thereof) are outweighed by the therapeutically beneficial effects. A “prophylactically effective amount” refers to an amount effective, at dosages and for periods of time necessary, to achieve the desired prophylactic result. Typically, since a prophylactic dose is used in subjects prior to or at an earlier stage of disease, the prophylactically effective amount mayl be less than the therapeutically effective amount.
The pharmaceutical compositions may include pharmaceutically acceptable carriers. The term “pharmaceutically acceptable carrier,” as used herein, means a non-toxic, inert solid, semi-solid or liquid filler, diluent, encapsulating material or formulation auxiliary of any type. Some examples of materials which can serve as pharmaceutically acceptable carriers are sugars such as, but not limited to, lactose, glucose and sucrose; starches such as, but not limited to, corn starch and potato starch; cellulose and its derivatives such as, but not limited to, sodium carboxymethyl cellulose, ethyl cellulose and cellulose acetate; powdered tragacanth; malt; gelatin; talc; excipients such as, but not limited to, cocoa butter and suppository waxes; oils such as, but not limited to, peanut oil, cottonseed oil, safflower oil, sesame oil, olive oil, corn oil and soybean oil; glycols; such as propylene glycol; esters such as, but not limited to, ethyl oleate and ethyl laurate; agar; buffering agents such as, but not limited to, magnesium hydroxide and aluminum hydroxide; alginic acid; pyrogen-free water; isotonic saline; Ringer's solution; ethyl alcohol, and phosphate buffer solutions, as well as other non-toxic compatible lubricants such as, but not limited to, sodium lauryl sulfate and magnesium stearate, as well as coloring agents, releasing agents, coating agents, sweetening, flavoring and perfuming agents, preservatives and antioxidants can also be present in the composition, according to the judgment of the formulator,
Thus, the compounds of the invention may be formulated for administration by, for example, solid dosing, eye drop, in a topical oil-based formulation, injection, inhalation (either through the mouth or the nose), implants, or oral, buccal, parenteral, or rectal administration. Techniques and formulations may generally be found in “Remington's Pharmaceutical Sciences,” (Meade Publishing Co., Easton, Pa.). Therapeutic compositions must typically be sterile and stable under the conditions of manufacture and storage.
The route by which the compounds of the invention are administered and the form of the composition will dictate the type of carrier to be used. The composition may be in a variety of forms, suitable, for example, for systemic administration (e.g., oral, rectal, nasal, sublingual, buccal, implants, or parenteral) or topical administration (e.g., dermal, pulmonary, nasal, aural, ocular, liposome delivery systems, or iontophoresis).
Carriers for systemic administration typically include at least one of diluents, lubricants, binders, disintegrants, colorants, flavors, sweeteners, antioxidants, preservatives, glidants, solvents, suspending agents, wetting agents, surfactants, combinations thereof, and others. All carriers are optional in the compositions.
Suitable diluents include sugars such as glucose, lactose, dextrose, and sucrose; dials such as propylene glycol; calcium carbonate; sodium carbonate; sugar alcohols, such as glycerin; mannitol; and sorbitol. The amount of diluents) in a systemic or topical composition is typically about 50 to about 90 weight % of the total composition weight.
Suitable lubricants include silica, talc, stearic acid and its magnesium salts and calcium salts, calcium sulfate; and liquid lubricants such as polyethylene glycol and vegetable oils such as peanut oil, cottonseed oil, sesame oil, olive oil, corn oil and oil of theobroma. The amount of lubricant(s) in a systemic or topical composition is typically about 5 to about 10% of the total composition weight.
Suitable binders include polyvinyl pyrrolidone; magnesium aluminum silicate; starches such as corn starch and potato starch; gelatin; tragacanth; and cellulose and its derivatives, such as sodium carboxymethylcellulose, ethyl cellulose, methylcellulose, microcrystalline cellulose, and sodium carboxymethylcellulose. The amount of binder(s) in a systemic composition is typically about 5 to about 50% of the total composition weight.
Suitable disintegrants include agar, alginic acid and the sodium salt thereof, effervescent mixtures, croscarmellose, crospovidone, sodium carboxymethyl starch, sodium starch glycolate, clays, and ion exchange resins. The amount of disintegrant(s) in a systemic or topical composition is typically about 0.1 to about 10% of the total composition weight.
Suitable colorants include a colorant such as an FD&C dye. When used, the amount of colorant in a systemic or topical composition is typically about 0.005 to about 0.1% of the total composition weight.
Suitable flavors include menthol, peppermint, and fruit flavors. The amount of flavor(s), when used, in a systemic or topical composition is typically about 0.1 to about 1.0% of the total composition weight.
Suitable sweeteners include aspartame and saccharin. The amount of sweetener(s) in a systemic or topical composition is typically about 0.001 to about 1% of the total composition weight.
Suitable antioxidants include butylated hydroxyanisole (“BHA”), butylated hydroxytoluene (BHT), and vitamin E. The amount of antioxidant(s) in a systemic or topical composition is typically about 0.1. to about 5% of the total composition weight.
Suitable preservatives include benzalkonium chloride, methyl paraben and sodium benzoate. The amount of preservative(s) in a systemic or topical composition is typically about 0.01 to about 5% of the total composition weight.
Suitable glidants include silicon dioxide. The amount of glidant(s) in a systemic or topical composition is typically about 1 to about 5% of the total composition weight.
Suitable solvents include water, isotonic saline, ethyl oleate, glycerine, hydroxylated castor oils, alcohols such as ethanol, and phosphate buffer solutions. The amount of solvent(s) in a systemic or topical composition is typically from about 0 to about 100% of the total composition weight.
Suitable suspending agents include AVICEL RC-591 (from FMC Corporation of Philadelphia, Pa.) and sodium alginate. The amount of suspending agent(s) in a systemic or topical composition is typically about 1 to about 8% of the total composition weight.
Suitable surfactants include lecithin, Polysorbate 80, and sodium lauryl sulfate, and the TWEENS from Atlas Powder Company of Wilmington, Del. Suitable surfactants include those disclosed in the C.T.F.A. Cosmetic Ingredient Handbook, 1992, pp,587-592; Remington's Pharmaceutical Sciences, 22th Ed, 2013; and McCutcheon's Volume 1, Emulsifiers & Detergents, 1994. North American Edition, pp. 236-239. The amount of surfactant(s) in the systemic or topical composition is typically about 0.1 % to about 5% of the total composition weight.
Although the amounts of components in the systemic compositions may vat depending on the type of systemic composition prepared, in general, systemic compositions include 0.01 to 50 weight % of the total composition weight of an active compound (e.g., a compound of formula (I) or a pharmaceutically acceptable salt thereof) and 50 to 99.99 weight % of the total composition weight of one or more carriers. Compositions for parenteral administration typically include 0.1 to 10 weight % of the total composition weight of actives and 90 to 99.9 weight % of the total composition weight of a carrier including a diluent and a solvent.
Compositions for oral administration can have various dosage forms. For example, solid forms include tablets, capsules, granules, and bulk powders. These oral dosage forms include a safe and effective amount, usually at least about 5 weight % of the total composition weight, and more particularly from about 2.5 to about 50 weight % of the total composition weight of actives. The oral dosage compositions include about 50 to about 95 weight % of carriers of the total composition weight, and more particularly, from about 50 to about 75 weight % of the total composition weight.
Tablets can be compressed, tablet triturates, enteric-coated, sugar-coated, film-coated, or multiple-compressed. Tablets typically include an active component, and a carrier comprising ingredients selected from diluents, lubricants, binders, disintegrants, colorants, flavors, sweeteners, glidants, and combinations thereof. Specific diluents include calcium carbonate, sodium carbonate, mannitol, lactose and cellulose. Specific binders include starch, gelatin, and sucrose. Specific disintegrants include alginic acid and croscarrnellose. Specific lubricants include magnesium stearate, stearic acid, and talc. Specific colorants are the FD&C dyes, which can be added for appearance. Chewable tablets preferably contain sweeteners such as aspartame and saccharin, or flavors such as menthol, peppermint, fruit flavors, or a combination thereof.
Capsules (including implants, time release and sustained release formulations) typically include an active compound (e.g., a compound of formula (I) or a), and a carrier including one or more diluents disclosed above in a capsule comprising gelatin. Granules typically comprise a disclosed compound, and preferably glidants such as silicon dioxide to improve flow characteristics. Implants can be of the biodegradable or the non-biodegradable type.
The selection of ingredients in the carrier for oral compositions depends on secondary considerations like taste, cost, and shelf stability, which are not critical for the purposes of this invention.
Solid compositions may be coated by conventional methods, typically with pH or time-dependent coatings, such that a disclosed compound is released in the gastrointestinal tract in the vicinity of the desired application, or at various points and times to extend the desired action. The coatings typically include one or more components selected from the group consisting of cellulose acetate phthalate, polyvinyl acetate phthalate, laydroxypropyl methyl cellulose phthalate, ethyl cellulose, EUDRAGIT® coatings (available from Evonik Industries of Essen, Germany), waxes and shellac.
Compositions for oral administration can have liquid forms. For example, suitable liquid forms include aqueous solutions, emulsions, suspensions, solutions reconstituted from non-effervescent granules, suspensions reconstituted from non-effervescent granules, effervescent preparations reconstituted from effervescent granules, elixirs, tinctures, syrups, and the like. Liquid orally administered compositions typically include a disclosed compound and a carrier, namely, a carrier selected from diluents, colorants, flavors, sweeteners, preservatives, solvents, suspending agents, and surfactants. Peroral liquid compositions preferably include one or more ingredients selected from colorants, flavors, and sweeteners.
Other compositions useful for attaining systemic delivery of the subject compounds include sublingual, buccal and nasal dosage forms. Such compositions typically include one or more of soluble filler substances such as diluents including sucrose, sorbitol and mannitol, and binders such as acacia, microcrystalline cellulose, carboxymethyl cellulose, and hydroxypropyl methylcellulose. Such compositions may further include lubricants, colorants, flavors, sweeteners, antioxidants, and glidants.
The compounds of the invention can be topically administered. Topical compositions that can be applied locally to the skin may be in any form including solids, solutions, oils, creams, ointments, gels, lotions, shampoos, leave-on and rinse-out hair conditioners, milks, cleansers, moisturizers, sprays, skin patches, and the like. Topical compositions include: a disclosed compound (e.g., a compound of formula (I) or a pharmaceutically acceptable salt thereof), and a carrier. The carrier of the topical composition preferably aids penetration of the compounds into the skin. The carrier may further include one or more optional components.
The amount of the carrier employed in conjunction with a disclosed compound is sufficient to provide a practical quantity of composition for administration per unit dose of the compound. Techniques and compositions for making dosage forms useful in the methods of this invention are described in the following references: Modern Pharmaceutics, Chapters 9 and 10, Banker & Rhodes, eds. (1979); Lieberman et al., Pharmaceutical Dosage Forms: Tablets (1981); and Ansel, Introduction to Pharmaceutical Dosage Forms, 2nd Ed., (1976).
A carrier may include a single ingredient or a combination of two or more ingredients. In the topical compositions, the carrier includes a topical carrier. Suitable topical carriers include one or more ingredients selected from phosphate buffered saline, isotonic water, deionized water, monofunctional alcohols, symmetrical alcohols, aloe vera gel, allantoin, glycerin, vitamin A and E oils, mineral oil, propylene glycol, PPG-2 myristyl propionate, dimethyl isosorbide, castor oil, combinations thereof, and the like. More particularly, carriers for skin applications include propylene glycol, dimethyl isosorbide, and water, and even more particularly, phosphate buffered saline, isotonic water, deionized water, monofunctional alcohols, and symmetrical alcohols.
The carrier of a topical composition may further include one or more ingredients selected from emollients, propellants, solvents, humectants, thickeners, powders, fragrances, pigments, and preservatives, all of which are optional.
Suitable emollients include stearyl alcohol, glyceryl monoricinoleate, glyceryl monostearate, propane-1,2-diol, butane-1,3-diol, mink oil, cetyl alcohol, isopropyl isostearate, stearic acid, isobutyl palmitate, isocetyl stearate, oleyl alcohol, isopropyl laurate, hexyl laurate, decyl oleate, octadecan-2-ol, isocetyl alcohol, cetyl palmitate, di-n-butyl sebacate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, butyl stearate, polyethylene glycol, triethylene glycol, lanolin, sesame oil, coconut oil, arachis oil, castor oil, acetylated lanolin alcohols, petroleum, mineral oil, butyl myristate, isostearic acid, palmitic acid, isopropyl linoleate, lauryl lactate, myristyl lactate, decyl oleate, myristyl myristate, and combinations thereof. Specific emollients for skin include stearyl alcohol and polydimethylsiloxane. The amount of ernollient(s) in a skin-based topical composition is typically about 5 to about 95 weight % of the total composition weight.
Suitable propellants include propane, butane, isobutane, dimethyl ether, carbon dioxide, nitrous oxide, and combinations thereof. The amount of propella.nt(s) in a topical composition is typically about 0 to about 95 weight % of the total composition weight.
Suitable solvents include water, ethyl alcohol, methylene chloride, isopropanol, castor oil, ethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol monoethyl ether, dimethylsulfoxide, dimethyl formamide, tetrahydrofuran, and combinations thereof Specific solvents include ethyl alcohol and homotopic alcohols. The amount of solvent(s) in a topical composition is typically about 0 to about 95 weight % of the total composition weight.
Suitable humectants include glycerin, sorbitol, sodium 2-pyrrolidone-5-carboxylate, soluble collagen, dihutyl phthalate, gelatin, and combinations thereof. Specific humectants include glycerin. The amount of humectant(s) in a topical composition is typically 0 to 95 weight % of the total composition weight.
The amount of thickener(s) in a topical composition is typically about 0 to about 95 weight % of the total composition weight.
Suitable powders include beta-cyclodextrins, hydroxypropyl cyclodextrins, chalk, talc, fullers earth, kaolin, starch, gums, colloidal silicon dioxide, sodium polyacrylate, tetra alkyl ammonium smectites, trialkyl aryl ammonium smectites, chemically-modified magnesium aluminum silicate, organically-modified montmorillonite clay, hydrated aluminum silicate, fumed silica, carboxyvinyl polymer, sodium carboxymethyl cellulose, ethylene glycol monostearate, and combinations thereof. The amount of powder(s) in a topical composition is typically 0 to 95 weight % of the total composition weight.
The amount of fragrance in a topical composition is typically about 0 to about 0.5 weight c′,/0, particularly, about 0.001 to about 0.1 weight % of the total composition weight.
Suitable pH adjusting additives include HCl or NaOH in amounts sufficient to adjust the pH of a topical pharmaceutical composition.
The disclosed compounds, pharmaceutical compositions and formulations may be used in methods for treatment of disorders, such as psychiatric disorders, associated with muscarinic acetylcholine receptor dysfunction. The disclosed compounds and pharmaceutical compositions may also be used in methods for the antagonism of muscarinic acetylcholine receptor activity in a mammal, and in methods for prevention and/or treatment of substance use disorders (SUDS) in a mammal. The methods further include cotherapeutic methods for improving treatment outcomes in the context of cognitive or behavioral therapy. In the methods of use described herein, additional therapeutic agent(s) may be administered simultaneously or sequentially with the disclosed compounds and composition.
a. Treating Disorders
The disclosed compounds, pharmaceutical compositions and formulations may be used in methods for treatment of disorders, such as psychiatric and neurological disorders, associated with muscarinic acetylcholine receptor dysfunction, or changes in DA neuron signaling that can be modulated by inhibiting M5 activity. The methods of treatment may comprise administering to a subject in need of such treatment a therapeutically effective amount of the compound of formula (I), or a pharmaceutical composition comprising a therapeutically effective amount of a compound of formula (1).
In some embodiments, the disclosure provides a method for the prevention and/or treatment of substance use disorders (SUDs) in a mammal comprising the step of administering to the mammal a therapeutically effective amount of the compound of formula (I), or a pharmaceutical composition comprising a therapeutically effective amount of a compound of formula (1).
The compounds and compositions disclosed herein may be useful for treating, preventing, ameliorating, controlling or reducing the risk of a variety of disorders associated with selective mAChR M5 receptor inhibition. For example, a treatment can include selective mAChR. M5 receptor inhibition to an extent effective to affect cholinergic activity. A disorder can be associated with cholinergic activity, for example cholinergic hyperfunction. A disorder also may be associated with dopaminergic activity. For example dopaminergic hyperfunction as observed in the mesolimbic dopaminergic reward pathway after exposure to substances of abuse. In addition, dopaminergic hyperfunction of both the mesolimbic and the nigro-stiatal pathways can contribute to multiple other psychiatric and neurological disorders. These include psychosis associated with schizophrenia and related psychiatric disorders, psychosis associated with neurodegenerative disorders, such as Alzheimer's disease and others, obsessive compulsive disorder, Tourette syndrome, Huntington's chorea, tardive dyskinesia, L-DOPA or DA receptor agonist-induced dyskinesia, dystonia, and other hyperkinetic or repetitive movement disorders.
Thus, provided is a method of treating or preventing a disorder in a subject comprising the step of administering to the subject at least one disclosed compound or at least one disclosed pharmaceutical composition, in an amount effective to treat the disorder in the subject.
Also provided is a method for the treatment of one or more disorders associated with mAChR M5 receptor activity in a subject comprising the step of administering to the subject a therapeutically effective amount of the compound of formula (I), or a pharmaceutical composition comprising a therapeutically effective amount of a compound of formula (I).
In some embodiments, the disclosure provides a method for the treatment of a disorder associated with muscarinic acetylcholine receptor dysfunction or dysfunction of dopaminergic signaling in the brain reward pathway in a mammal, comprising the step of administering to the mammal an effective amount of at least one disclosed compound or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising at least one disclosed compound or pharmaceutically acceptable salt thereof.
In some embodiments, the disclosed compounds and compositions have utility in preventing and/or treating a variety of psychiatric disorders associated with the mAChR M receptor, including one or more of the following conditions or diseases: substance-related disorders, opioid-related disorders, alcohol-related disorders, sedative-, hypnotic-, or anxiolytic-related disorders, stimula.nt-related disorders, cannabis-related disorders, hallucinogen-related disorders, inhalant-related disorders, tobacco-related disorders, depressive disorders including major depressive disorder (single or recurrent episode; mild, moderate, severe, with psychotic features, in partial remission, in full remission, unspecified), persistent depressive disorder (dysthymia), anxiety disorders, schizophrenia, psychotic disorder NOS, brief psychotic disorder, schizophreniform disorder, schizoaffective disorder, delusional disorder, shared psychotic disorder, catastrophic schizophrenia, postpartum psychosis, psychotic depression, psychotic break, tardive psychosis, myxedematous psychosis, occupational psychosis, menstrual psychosis, secondary psychotic disorder, bipolar I disorder with psychotic features, and substance-induced psychotic disorder. In some embodiments, the psychotic disorder is a psychosis associated with an illness selected from major depressive disorder, affective disorder, bipolar disorder, electrolyte disorder, post-traumatic stress disorder.
In some embodiments, the disorder is substance-related disorders selected from substance use disorders, substance-induced disorders, alcohol use disorder, other alcohol-induced disorders, unspecified alcohol-related disorder, caffeine-related disorders, other caffeine-induced disorders, unspecified caffeine-related disorder, cannabis-related disorders, cannabis use disorder, other cannabis-induced disorders, unspecified cannabis-related disorder, hallucinogen-related disorders, phencyclidine use disorder, other hallucinogen use disorder, hallucinogen persisting perception disorder, other phencyclidine-induced disorders, other hallucinogen-induced disorders, unspecified phencyclidine-related disorder, unspecified hallucinogen-related disorder, inhalant-related disorders, inhalant use disorder, other inhalant-induced disorders, unspecified inhalant-related disorder, opioid-related disorders, opioid use disorder, other opioid-induced disorders, unspecified opioid-related disorder, sedative-, hypnotic-, or anxiolytic-related disorders, sedative, hypnotic, or anxiolytic use disorder, other sedative-, hypnotic-, or anxiolytic-induced disorders, unspecified sedative-, hypnotic-, or anxiolytic-related disorder, stimulant-related disorders, stimulant use disorder, other stimulant-induced disorders, unspecified stimulant-related disorder, tobacco-related disorders, tobacco use disorder, other tobacco-induced disorders, unspecified tobacco-related disorder, other (or unknown) substance-related disorders, other (or unknown) substance use disorder, other (or unknown) substance-induced disorders, unspecified other (or unknown) substance-related disorder, non-substance-related disorders, gambling disorder.
In some embodiments, the disorder is depressive disorders selected from disruptive mood dysregulation disorder, major depressive disorder (single or recurrent episode; mild, moderate, severe, with psychotic features, in partial remission, in full remission, unspecified), persistent depressive disorder (dysthymia), premenstrual dysphoric disorder, substance/medication-induced depressive disorder, depressive disorder due to another medical condition, other specified depressive disorder, unspecified depressive disorder, specifiers for depressive disorders. In some embodiments, the depressive disorder is due to a general medical condition and is substance-induced or drug-induced (phencyclidine, ketamine and other dissociative anesthetics, amphetamine and other psychostimulants, and cocaine).
In some embodiments, the disorder is anxiety disorders. The major anxiety disorder subtypes include separation anxiety disorder, selective mutism, specific phobia, social anxiety disorder (social phobia), panic disorder, panic attack specifier, agoraphobia, generalized anxiety disorder, substance,/medication-induced anxiety disorder, anxiety disorder due to another medical condition, other specified anxiety disorder, unspecified anxiety disorder. In some embodiments, the anxiety disorder is due to a general medical condition and is substance-induced or drug-induced (phencyclidine, ketamine and other dissociative anesthetics, amphetamine and other psychostimulants, and cocaine).
In some embodiments, the disorder is a psychotic disorder selected from schizophrenia, brief psychotic disorder, schizophreniform disorder, schizoaffective disorder, delusional disorder, and shared psychotic disorder, in some embodiments, the schizophrenia is selected from catastrophic schizophrenia, catatonic schizophrenia, paranoid schizophrenia, residual schizophrenia, disorganized schizophrenia, and undifferentiated schizophrenia. in some embodiments, the disorder is selected from schizoid personality disorder, schizotypal personality disorder, and paranoid personality disorder. In some embodiments, the psychotic disorder is due to a general medical condition and is substance-induced or drug-induced (phencyclidine, ketamine and other dissociative anesthetics, amphetamine and other psychostimulants, and cocaine).
In some embodiments, the present disclosure provides a method for preventing and/or treating substance-related disorders, comprising administering to a patient in need thereof an effective amount of a compound or composition of the present disclosure. As designated by the DSM-V, substance-related disorders comprise 10 separate classes of drugs: alcohol; caffeine; cannabis; hallucinogens (with separate categories for phencyclidine [or similarly acting arylcyclohexylamines] and other hallucinogens); inhalants; opioids; sedatives, hypnotics, and anxiolytics; stimulants (amphetamine-type substances, cocaine, and other stimulants); tobacco; and other (or unknown) substances. These 10 classes are not hilly distinct. All drugs that are taken in excess share a common direct activation of the mesolimbic dopaminergic reward pathway that is involved in the reinforcement of drug seeking behaviors and substance abuse, Under conditions of excessive intake of all drugs, there is an intense and direct activation of this reward pathway that can result in the neglect of normal activities. Although the pharmacological mechanisms by which each class of drugs produces reward are different, drugs of abuse typically activate this reward pathway resulting in feelings of pleasure, often referred to as a “high.” As previously described in the DSM-IV, substance use disorders (SUDS) are now encompassed as part of a broader class of disorders defined in the DSM-V under substance-related disorders, that are “related to the taking of a drug of abuse (including alcohol)”. The major or minor substance-related disorders include substance use disorders, substance-induced disorders, alcohol use disorder, other alcohol-induced disorders, unspecified alcohol-related disorder, caffeine-related disorders, other caffeine-induced disorders, unspecified caffeine-related disorder, cannabis-related disorders, cannabis use disorder, other cannabis-induced disorders, unspecified cannabis-related disorder, hallucinogen-related disorders, phencyclidine use disorder, other hallucinogen use disorder, hallucinogen persisting perception disorder, other phencyclidine-induced disorders, other hallucinogen-induced disorders, unspecified phencyclidine-related disorder, unspecified hallucinogen-related disorder, inhalant-related disorders, inhalant use disorder, other inhalant-induced disorders, unspecified inhalant-related disorder, opioid-related disorders, opioid use disorder, other opioid-induced disorders, unspecified opioid-related disorder, sedative-, hypnotic-, or anxiolytic-related disorders, sedative, hypnotic, or anxiolytic use disorder, other sedative-, hypnotic-, or anxiolytic-induced disorders, unspecified sedative-, hypnotic-, or anxiolytic-related disorder, stimulant-related. disorders, stimulant use disorder, other stimulant-induced disorders, unspecified stimulant-related disorder, tobacco-related disorders, tobacco use disorder, other tobacco-induced disorders, unspecified tobacco-related disorder, nicotine use disorder, other (or unknown) substance-related disorders, other (or unknown) substance use disorder, other (or unknown) substance-induced disorders, unspecified other (or unknown) substance-related disorder, non-substance-related disorders, gambling disorder. The skilled artisan will recognize that there are alternative nomenclatures, nosologies and classification systems for mental disorders, and that these systems evolve with medical and scientific progress. Thus, the term “substance-related disorders” is intended to include like disorders that are described in other diagnostic sources.
In some embodiments, the present disclosure provides a method for treating depressive disorders, comprising administering to a patient in need thereof an effective amount of a compound or composition of the present disclosure. The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-V) (2013, American Psychiatric Association, Washington D.C.) provides a diagnostic tool for “Depressive Disorders” including disorders that share features of the presence of sad, empty, or irritable mood, accompanied by somatic and cognitive changes that significantly affect the individual's capacity to function, Differentiation of different subtypes of depressive disorders is based on the magnitude of duration, timing, or presumed etiology. In contrast with the DSM-IV, “Depressive Disorders” have been separated from “Bipolar and Related Disorders.” The major depressive disorder subtypes include disruptive mood dysregulation disorder, major depressive disorder, persistent depressive disorder (dysthymia), premenstrual dysphoric disorder, substance/medication-induced depressive disorder, depressive disorder due to another medical condition, other specified depressive disorder, unspecified depressive disorder, specifiers for depressive disorders. The. skilled artisan will recognize that there are alternative nomenclatures, nosologies and classification systems for mental disorders, and that these systems evolve with medical and scientific progress. Thus the term “depressive disorders” is intended to include like disorders that are described in other diagnostic sources.
In some embodiments, the present disclosure provides a method for treating anxiety disorders, comprising administering to a patient in need thereof an effective amount of a compound or composition of the present disclosure. The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-V) (2013, American Psychiatric Association, Washington D.C.) provides a diagnostic tool for anxiety disorders including disorders that share features of excessive fear and anxiety and related behavioral disturbances. Panic attacks feature prominently within the anxiety disorders as a type of fear response. Panic attacks are not limited to anxiety disorders but rather can be observed in other mental disorders. The major anxiety disorder subtypes include separation anxiety disorder, selective mutism, specific phobia, social anxiety disorder (social phobia), panic disorder, panic attack specifier, agoraphobia, generalized anxiety disorder, substance/medication-induced anxiety disorder, anxiety disorder due to another medical condition, other specified anxiety disorder, unspecified anxiety disorder. The skilled artisan will recognize that there are alternative nomenclatures, nosologies and classification systems for mental disorders, and that these systems evolve with medical and scientific progress. Thus the term “anxiety disorders” is intended to include like disorders that are described in other diagnostic sources.
In some embodiments, the present disclosure provides a method for treating schizophrenia or psychosis, comprising administering to a patient in need thereof an effective amount of a compound or composition of the present disclosure. Particular schizophrenia or psychosis pathologies are paranoid, disorganized, catatonic or undifferentiated schizophrenia and substance-induced psychotic disorder. DSM-IV-TR provides a diagnostic tool that, includes paranoid, disorganized, catatonic, undifferentiated or residual schizophrenia, and substance-induced psychotic disorder. DSM-V eliminated the subtypes of schizophrenia, and instead includes a dimensional approach to rating severity for the core symptoms of schizophrenia, to capture the heterogeneity in symptom type and severity expressed across individuals with psychotic disorders. As used herein, the term “schizophrenia or psychosis” includes treatment of those mental disorders as described in DSM-IV-TR or DSM-V. The skilled artisan will recognize that there are alternative nomenclatures, nosologies and classification sys- tuns for mental disorders, and that these systems evolve with medical and scientific progress. Thus the term “schizophrenia or psychosis” is intended to include like disorders that are described in other diagnostic sources.
The compounds and compositions may be further useful in a method for the prevention, treatment, control, amelioration, or reduction of risk of the diseases, disorders and conditions noted herein. The compounds and compositions may be further useful in a method for the prevention, treatment, control, amelioration, or reduction of risk of the aforementioned diseases, disorders and conditions, in combination with other agents.
In the treatment of conditions which require inhibition of mAChR M5, an appropriate dosage level may be about 0.01 to 500 mg per kg patient body weight per day, which can be administered in single or multiple doses. The dosage level may be about 0.1 to about 250 mg/kg per day, or about 0.5 to about 100 mg/kg per day. A suitable dosage level can be about 0.01 to 250 mg/kg per day, about 0.05 to 100 mg/kg per day, or about 0.1 to 50 mg/kg per day. Within this range the dosage can be 0.05 to 0.5, 0.5 to 5 or 5 to 50 mg/kg per day. For oral administration, the compositions may be provided in the form of tablets containing 1.0 to 1000 milligrams of the active ingredient, particularly 1.0, 5.0, 10, 15, 20, 25, 50, 75, 100, 150, 200, 250, 300, 400, 500, 600, 750, 800, 900, or 1000 milligrams of the active ingredient for the symptomatic adjustment of the dosage to the patient to be treated. The compounds can be administered on a regimen of 1 to 4 times per day, preferably once or twice per clay. This dosage regimen can be adjusted to provide the optimal therapeutic response. It will be understood, however, that the specific dose level and frequency of dosage for any particular patient can be varied and will depend upon a variety of factors including the activity of the specific compound employed, the metabolic stability and length of action of that compound, the age, body weight, general health, sex, diet, mode and time of administration, rate of excretion, drug combination, the severity of the particular condition, and the host undergoing therapy.
Thus, in some embodiments, the disclosure relates to a method for inhibiting mAChR M5 receptor activity in at least one cell, comprising the step of contacting the at least one cell with at least one disclosed compound or at least one product of a disclosed method in an amount effective to activate mAChR. M5 in the at least one cell. In some embodiments, the cell is mammalian, for example, human. In some embodiments, the cell has been isolated from a subject prior to the contacting step. In some embodiments, contacting is via administration to a subject.
In some embodiments, the invention relates to a method for inhibiting mAChR M5 activity in a subject, comprising the step of administering to the subject at least one disclosed compound or at least one product of a disclosed method in a dosage and amount effective to inhibiting mAChR M5 activity in the subject. In some embodiments, the subject is mammalian, for example, human. In some embodiments, the mammal has been diagnosed with a need for mAChR M5 antagonism prior to the administering step. In some embodiments, the mammal has been diagnosed with a. need for mAChR M5 activation prior to the administering step. In some embodiments, the method further comprises the step of identifying a subject in need of mAChR M5 antagonism.
In some embodiments, the invention relates to a method for the treatment of a disorder associated with selective mAChR M5 inhibition, for example, a psychiatric disorder associated with the brain reward system, in a mammal comprising the step of administering to the mammal at least one disclosed compound or at least one product of a disclosed method in a dosage and amount effective to treat the disorder in the mammal. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for treatment for the disorder prior to the administering step. In some embodiments, the method further comprises the step of identifying a subject in need of treatment for the disorder.
In some embodiments, the disorder can he selected from substance related disorders, substance use disorders, substance-induced disorders, alcohol use disorder, other alcohol-induced disorders, unspecified alcohol-related disorder, opioid-related disorders, opioid use disorder, other opioid-induced disorders, unspecified opioid-related disorder, stimulant-related disorders, stimulant use disorder, other stimulant-induced disorders, unspecified stimulant-related disorder, tobacco-related disorders, tobacco use disorder, other tobacco-induced disorders, unspecified tobacco-related disorder, other (or unknown) substance-related disorders, other (or unknown) substance use disorder, other (or unknown) substance-induced disorders, unspecified other (or unknown) substance-related disorder, non-substance-related disorders, substance related disorders associate with anxiety, substance related disorders associated with depressive disorders, substance related disorders associated with schizophrenia or psychosis.
In some embodiments, the disorder can be selected from depressive disorders, disruptive mood dysregulation disorder, major depressive disorder, persistent depressive disorder (dysthymia), premenstrual dysphoric disorder, substancelmedication-induced depressive disorder, depression associated with substance-related disorders.
In some embodiments, the disorder can be selected from psychosis, schizophrenia, conduct disorder, disruptive behavior disorder, bipolar disorder, psychotic episodes of anxiety, anxiety associated with psychosis, psychotic mood disorders such as severe major depressive disorder; mood disorders associated with psychotic disorders, acute mania, depression associated with bipolar disorder, mood disorders associated with schizophrenia.
b. Inhibition of Muscarinic Acetylcholine Receptor Activity
Compounds of the invention may pharmacologically modulate the M5 receptor by classical antagonism of the M5 receptor, by negative all osteric modulation of the M5 receptor or through inverse agonism, i.e., blocking constitutively active M5 receptors.
In some embodiments, the disclosure relates to a method for inhibition of muscarinic acetylcholine receptor activity in a mammal comprising the step of administering to the mammal an effective amount of at least one disclosed compound or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising at least one disclosed compound or pharmaceutically acceptable salt thereof.
In some embodiments, inhibition of muscarinic acetylcholine receptor activity decreases muscarinic acetylcholine receptor activity, decreases in brain reward system, and/or decreases mesolimbic dopamine reward pathway activity. In some embodiments, inhibition of muscarinic acetylcholine receptor activity is partial antagonism of the muscarinic acetylcholine receptor. In some embodiments, inhibition of muscarinic acetylcholine receptor activity is negative allosteric modulation of the muscarinic acetylcholine receptor,
In an embodiment, a compound of the invention inhibits the agonist response (e.g., acetylcholine) of mAChR M5. In some embodiments, a compound of the invention decreases mAChR M5 response to a near maximal concentration of an agonist (e.g, an EC80 of Ach)) in the presence of compound of the invention. The inhibition of mAChR M5 activity can be demonstrated by methodology known in the art. For example, activation of mAChR M5 activity can be determined by measurement of calcium flux in response to an agonist, e.g. acetylcholine, in cells loaded with a Ca2+-sensitive fluorescent dye (e.g., Fluo-4). In an embodiment, the calcium flux was measured as an increase in fluorescent static ratio. In an embodiment, competitive and non-competitive antagonist activity was analyzed as a concentration-dependent decrease in the EC80 acetylcholine response (i.e. the response of mAChR M5 at a concentration of acetylcholine that yields 80% of the maximal response).
In an embodiment, a compound of the invention inhibits mAChR M5 response as a decrease in calcium fluorescence in mAChR M5-transfected CHC-KI cells in the presence of a compound of the invention.
The compounds of the invention may exhibit competitive and non-competitive antagonism of mAChR M5 response to acetylcholine as a decrease in response to non-maximal concentrations of acetylcholine in CHO-K1 cells transfected with a mAChR. M5 in the presence of the compound, compared to the response to acetylcholine in the absence of the compound.
In some embodiments, the compound administered exhibits inhibition of mAChR M5 with an IC50 of less than about 10 μM, less than about 5 μM, less than about 1 μM, less than about 500 nM, or less than about 100 nM. In some embodiments, the compound administered exhibits inhibition of mAChR M5 with an IC50 of between about 10 μM and about 1 nM, about 1 μM and about 1 nM, about 100 nM and about 1 nM, or about 10 nM and about 1 nM.
In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of muscarinic acetylcholine receptor activity prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of inhibiting muscarinic acetylcholine receptor activity. In some embodiments, the inhibition of muscarinic acetylcholine receptor activity treats a disorder associated with muscarinic acetylcholine receptor activity in the mammal.
In some embodiments, the inhibition of muscarinic acetylcholine receptor activity prevents a disorder associated with muscarinic acetylcholine receptor activity in the mammal. In some embodiments, the muscarinic acetylcholine receptor is mAChR M5.
In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of muscarinic acetylcholine receptor activity prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of inhibiting muscarinic acetylcholine receptor activity. In some embodiments, the inhibition of muscarinic acetylcholine receptor activity treats a psychiatric disorder associated with brain reward system in the mammal. In some embodiments, the inhibition of muscarinic acetylcholine receptor activity prevents a psychiatric disorder associated with brain reward system in the mammal. In some embodiments, the muscarinic acetylcholine receptor is mAChR M5.
In some embodiments, inhibition of muscarinic acetylcholine receptor activity in a mammal is associated with the treatment of a psychiatric disorder associated with a muscarinic receptor dysfunction, such as a neurological or psychiatric disorder disclosed herein. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, inhibition of muscarinic acetylcholine receptor activity in a mammal is associated with the treatment of a psychiatric disorder associated with brain reward system, such as a psychiatric disorder disclosed herein. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, inhibition of muscarinic acetylcholine; receptor activity in a mammal is associated with the prevention of a psychiatric disorder associated with brain reward system, such as a psychiatric disorder disclosed herein. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the disclosure provides a method for inhibition of muscarinic acetylcholine receptor activity in a cell, comprising the step of contacting the cell with an effective amount of at least one disclosed compound or a pharmaceutically acceptable salt thereof. In some embodiments, the cell is mammalian (e.g., human). In some embodiments, the cell has been isolated from a inammal prior to the contacting step. In some embodiments, contacting is via administration to a mammal.
In vivo efficacy for compounds of the invention may be measured in a number of preclinical behavioral models Efficacy may be measured by reversal of oxycodone self-administration or inhibition of cue-induced relapse of oxycodone drug seeking behavior in mammals after forced abstinence, referred to as reversal of cue-induced reactivity (Gould et al. ACS Chem Neurosci (2019) 10: 3740-37502019). Compounds of the invention may reverse the locomotor hyperactivity response induced by systemic administration of an acute dose of oxycodone, referred to as reversal of oxycodone-induced hyperactivity.
c. Inhibition of Substance-related Misuse
In some embodiments, the invention relates to a method for prevention of substance-related misuse in a mammal comprising the step of administering to the ma.mmal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mum nal is a human. In some embodiments, the method comprises the step of preventing in a mammal substance-related misuse. In some embodiments, the need for substance-related misuse prevention is associated with a. muscarinic receptor dysfunction. In some embodiments, the muscarinic receptor is mAChR M5. In some embodiments, the need for substance-related misuse prevention is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway.
In some embodiments, the invention relates to a method for prevention of opioid-related misuse in a mammal comprising the step of administering to the ma.mmal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the method comprises the step of preventing in a mammal opioid-related misuse. In some embodiments, the need for opioid-related misuse prevention is associated with a muscarinic receptor dysfunction. In some embodiments, the need for opioid-related misuse prevention is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the prevention of opioid-related misuse is a statistically significant prevention of opioid self-administration in rodents. In some embodiments, the prevention of opioid-related misuse is a statistically significant decreased opioid misuse in the Drug Use Screening Inventory-Revised (DUSI-R).
d. Inhibition of Substance-Related Disorder Relapse
In some embodiments, the invention relates to a method for inhibiting relapse of substance-related disorder in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of substance-related disorder prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of substance-related disorder inhibition. In some embodiments, the need for inhibiton of substance-related disorder relapse is associated with a muscarinic receptor dysfunction. In some embodiments, the need for inhibition of substance-related disorder relapse is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the invention relates to a method for inhibiting relapse of opioid-related disorders in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of opioid-related disorders prior to the administering step, In some embodiments, the method further comprises the step of identifying a mammal in need of opioid-related disorders inhibition. In some embodiments, the need for inhibition of relapse of opioid-related disorders is associated with a muscarinic receptor dysfunction. In some embodiments, the need for inhibition of relapse of opioid-related disorders is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of relapse of opioid-related disorders is a. statistically significant decrease in opioid self-administration or cue-induced relapse of opioid self-administration. In some embodiments, the inhibition of relapse of opioid-related disorders is a statistically significant decreased opioid abuse in the Drug Use Screening Inventory-Revised (DUSI-R).
In some embodiments, the invention relates to a method for inhibiting relapse of alcohol-related disorders in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of alcohol-related related disorders prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of alcohol-related disorders inhibition. In some embodiments, the need for inhibition of relapse of alcohol-related disorders is associated with a muscarinic receptor dysfunction. In some embodiments, the need for inhibition of relapse of alcohol-related disorders is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of relapse of alcohol-related disorders is a statistically significant decrease in alcohol drinking or cue-induced relapse of alcohol drinking in rodents. In some embodiments, the inhibition of relapse of alcohol-related disorders is a statistically significant decreased alcohol use in the Drug Use Screening Inventory-Revised (DUSI-R) or Adult Subsetance Use Survey (ASUS).
In some embodiments, the invention relates to a method for inhibiting relapse of tobacco-related disorders in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of tobacco-related disorders prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of tobacco-related disorders inhibition. In some embodiments, the need for the inhibition of relapse of tobacco-related disorders is associated with a muscarinic receptor dysfunction. In some embodiments, the need for inhibitor of relapse of tobacco-related use disorders is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of tobacco-related disorders is a statistically significant decrease in nicotine self-administration or cue-induced relapse of nicotine self-administration in rodents. In some embodiments, the inhibition of tobacco-related disorders is a statistically significant decreased tobacco or nicotine use in the Fagerstrom Test for Nicotine Dependence.
In some embodiments, the invention relates to a method for inhibiting relapse of cocaine-related disorders in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of cocaine-related disorders prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of cocaine-related disorders inhibition. In some embodiments, the need for inhibition of relapse of cocaine-related disorders is associated with a muscarinic receptor dysfunction. In some embodiments, the need for inhibition of relapse of cocaine-related disorders is associated with dysfunction of the brain reward system including the mesolimbic dopamine reward pathway. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of relapse of cocaine-related disorders is a statistically significant decrease in cocaine self-administration or cue-induced relapse of cocaine self-administration in rodents. In some embodiments, the inhibition of relapse of cocaine-related disorders is a statistically significant decreased cocaine use in the Drug Use Screening Inventory-Revised (DUSI-R).
e. Inhibition of Anxiety
In some embodiments, the invention relates to a method for inhibiting anxiety in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. In some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of anxiety prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of anxiety inhibition. In some embodiments, the need for anxiety inhibition is associated with a muscarinic receptor dysfunction. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of anxiety is a statistically sign increased time spent in open arm of elevated plus maze task in rodents. In some embodiments, the inhibition of anxiety is a statistically significant decrease in anxiety ratings in the Beck Anxiety Inventory (BAI).
f. Inhibition of Depression
In some embodiments, the invention relates to a method for inhibiting depression in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof, In some embodiments, the mammal is a human, In some embodiments, the mammal has been diagnosed with a need for inhibition of depression prior to the administering step. in some embodiments, the method further comprises the step of identifying a mammal in need of depression inhibition. In some embodiments, the need for depression inhibition is associated with a muscarinic receptor dysfunction. In some embodiments, the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of depression is a statisticallysignificant decrease in immobilization of the forced swim task or tail suspension in rodents. In sonic embodiments. the inhibition of psychosis is a. statistically significant increase mood in Hamilton Depression Rating Scale (HAM-D).
g. Inhibition of Psychosis
In some embodiments, the invention relates to a method for inhibiting psychosis in a mammal comprising the step of administering to the mammal an effective amount of least one disclosed compound; or a pharmaceutically acceptable salt, hydrate, solvate, or polymorph thereof. in some embodiments, the mammal is a human. In some embodiments, the mammal has been diagnosed with a need for inhibition of psychosis prior to the administering step. In some embodiments, the method further comprises the step of identifying a mammal in need of psychosis inhibition. In some embodiments, the need for psychosis inhibition is associated with a muscarinic receptor dysfunction. in some embodiments. the muscarinic receptor is mAChR M5.
In some embodiments, the inhibition of psychosis is a statistically significant decrease in amphetamine-induced hyperactivity. In some embodiments, the inhibition of psychosis is a statistically significant decrease in the positive symptom scales of the Positive and Negative Syndrome Scale (PANSS) or Brief Psychiatric Rating Scale (BPRS
h. Cotherapeutic Methods
In the methods of use described herein, additional therapeutic agents) may be administered simultaneously or sequentially with the disclosed compounds and compositions. Sequential administration includes administration before or after the disclosed compounds and compositions. In some embodiments, the additional therapeutic agent or agents may be administered in the same composition as the disclosed compounds. In other embodiments, there may be an interval of time between administration of the additional therapeutic agent and the disclosed compounds. in some embodiments, administration of an additional therapeutic agent with a disclosed compound may allow lower doses of the other therapeutic agents and/or administration at less frequent intervals. When used in combination with one or more other active ingredients, the compounds of the present invention and the other active ingredients may be used in lower doses than when each is used singly. Accordingly, the pharmaceutical compositions of the present invention include those that contain one or rn.ore other active ingredients, in addition to a compound of Formula (I). The above combinations include combinations of a compound of the present invention not only with one other active compound, but also with two or more other active compounds.
The disclosed compounds can be used as single agents or in combination with one or more other drugs in the treatment, prevention, control, amelioration or reduction of risk of the aforementioned diseases, disorders and conditions for which the compound or the other drugs have utility, where the combination of drugs together are safer or more effective than either drug alone. The other drug(s) can be administered by a route and in an amount commonly used therefor, contemporaneously or sequentially with a disclosed compound. When a disclosed compound is used contemporaneously with one or more other drugs, a pharmaceutical composition in unit dosage form containing such drugs and the disclosed compound may be used. However, the combination therapy can also be administered on overlapping schedules. It is also envisioned that the combination of one or more active ingredients and a disclosed compound can be more efficacious than either as a single agent. Thus, when used in combination with one or more other active ingredients, the disclosed compounds and the other active ingredients can be used in lower doses than when each is used singly.
The pharmaceutical compositions and methods of the present invention can further comprise other therapeutically active compounds as noted herein which are usually applied in the treatment of the above-mentioned pathological conditions.
The above combinations include combinations of a disclosed compound not only with one other active compound, but also with two or more other active compounds. Likewise, disclosed compounds can be used in combination with other drugs that are used in the prevention, treatment, control, amelioration, or reduction of risk of the diseases or conditions for which disclosed compounds are useful. Such other drugs can be administered, by a route and in an amount commonly used therefor, contemporaneously or sequentially with a compound of the present invention. When a compound of the present invention is used contemporaneously with one or more other drugs, a pharmaceutical composition containing such other drugs in addition to a disclosed compound is preferred. Accordingly, the pharmaceutical compositions include those that also contain one or more other active ingredients, in addition to a compound of the present invention.
The weight ratio of a disclosed compound to the second active ingredient can be varied and will depend upon the effective dose of each ingredient. Generally, an effective dose of each will be used. Thus, for example, when a compound of the present invention is combined with another agent, the weight ratio of a disclosed compound to the other agent will generally range from about 1000:1 to about 1:1000, preferably about 200:1 to about 1:200. Combinations of a compound of the present invention and other active ingredients will generally also be within the aforementioned range, but in each case, an effective dose of each active ingredient should be used.
In such combinations a disclosed compound and other active agents can be administered separately or in conjunction. In addition, the administration of one element can be prior to, concurrent to, or subsequent to the administration of other agent(s).
In some embodiments, the compound can be employed in combination with one or more commonly prescribed opioid analgesics for prevention of misuse or relapse including alfentanil IV; buprenorphine (buccal film, film/tablet, IV/IM SubQ, patch, IV); butorphanol oral; codeine oral; dextromethorphan oral; dihydrocodeine oral; fentanyl (buccal or SL tablets, lozenge/troche, film or oral spray, nasal spray, patch, IV, epidural, intrathecal); hydrocodone oral; hydromorphone (epidural, IV, oral/rectal); levorphanol (IV and oral); loperamide (oral),meperidine (IV and oral); methadone (oral, fV); morphine (IV, epidural, intrathecal, oral/rectal); nalbuphine IV; opium oral; oxycodone oral; oxymorphone IV; oxymorphone oral; pentazocine (IV and oral); remifentanil IV; sufentanil (IV and epidural); tapentadol oral; tramadol oral.
In some embodiments, the compound can be employed alone in combination with one or more classes of drugs commonly associated with substance-related disorders for prevention of misuse or relapse, including alcohol; caffeine; cannabis; hallucinogens (with separate categories for phencyclidine [or similarly acting arylcyclohexylamines] and other hallucinogens); inhalants; opioids; sedatives, hypnotics, and anxiolytics; stimulants (amphetamine-type substances, cocaine, and other stimulants); and tobacco.
In some embodiments, the compound can be employed alone in combination with one or more classes of drugs commonly associated used for the prevention of relapse of substance-related disorders including naloxone (IV, IM, SC, endotracheal, sublingual, intralingual, submental, and nasal routes), naltrexone, acamprosate, disulfiram, topiramate gabapentin, bupriopion, bupropion/naltrexone, varenicline, nicotine replacement (gum, patch, lozenge), benzodiazepine, hormone therapy, buprenorphine (alone, combined with naloxone, monthly injection, sublingual tablets), gabapbetin, topiramate, varenicline, behavioral therapies including cognitive-behavioral therapy (CBT).
In some embodiments, the compound can be employed in combination with one or more commonly prescribed non-opioid analgesics non-opioid pain medications including NSAIDS (non-steriodal anti-inflammatory drugs) including ibuproden oral, naproxen oral, ketorolac (oral, IM, IV), diaclodena.c (oral, topical gel), etodolac oral, meloxicam oral, methyl salicylate/menthol (topical); steroids (oral, intra-articular, peri-neural, epidural, IM, IV); anticonvulsants including gabapentin and pregabalin oral; SNRIs including duloxetine and milna.cipram tricycelic anti-depressants including amitriptyline, nortriptyline and desipramine; sodium channel blocker including lidocaine (topical cream/patch, IM, IV) mexilitine, topiramate; TRPV1 ion channel blocker including capsaicin (topical cream/patch, ointment); NMDA antagonists including ketamine IV, memantine oral, dextromethorphan; antispasmotics including cyclobenzaprine, tizanidine, baclofen, diazepam, lorazepam; acetaminophen oral; alpha agonists including clonidine (oral, patch), dexmedetomidine IV, guanfacine oral.
In some embodiments, the compound can be employed in combination with a compound from the phenothiazine, thioxanthene, heterocyclic dibenzazepine, butyrophenone, diphenylbutylpiperidine and indolone classes of neuroleptic agent. Suitable examples of phenothiazines include chlorpromazine, mesoridazine, thioridazine, aceto-phenazine, fluphenazine, perphenazine and trifluoperazine. Suitable examples of thioxanthenes include chlorprothixene and thiothixene. An example of a dibenzazepine is clozapine. An example of a butyrophenone is haloperidol. An example of a diphenylbutylpiperidine is pimozide. An example of an indolone is molindolone. Other neuroleptic agents include loxapine, sulpiride and risperidone. It will be appreciated that the neuroleptic agents when used in combination with the subject compound can be in the form of a pharmaceutically acceptable salt, for example, chlorpromazine hydrochloride, rnesoridazine besylate, thioridazine hydrochloride, acetophenazine maleate, fluphenazine hydrochloride, flurphenazine enathate, fluphenazine decanoate, trifluoperazine hydrochloride, thiothixene hydrochloride, haloperidol decanoate, loxapine succinate and molindone hydrochloride. Perphenazine, chlorprothixene, clozapine, haloperidol, pimozide and risperidone are commonly used in a non-salt form. Thus, the subject compound can be employed in combination with acetophenazine, alentemol, aripiprazole, amisulpride, benzhexol, bromocriptine, biperiden, chlorpromazine, chlorprothixene, clozapine, diazepam, fenoldopatn, fluphenazine, haloperidol, levodopa, levodopa with benserazide, levodopa with carbidopa, lisu-ride, loxapine, mesoridazine, molindolone, naxagolide, olanzapine, pergolide, perphenazine, pimozide, pramipexole, quetiapine, risperidone, sulpiride, tetrabenazine, trihexyphenidyl, thioridazine, thiothixene, trifluoperazine or ziprasidone.
In some embodiments, the compound can be employed in combination with an antidepressant or antianxiety agent, including norepinephrine reuptake inhibitors (including tertiary amine tricyclics and secondary amine tricyclics), selective serotonin reuptake inhibitors (SSRIs), monoamine oxidase inhibitors (MAOIs), reversible inhibitors of monoamine oxidase (RIMAs), serotonin and noradrenaline reuptake inhibitors (SNRIs), corticotropin releasing factor (CRF) antagonists, alpha-adrenoreceptor antagonists, neurokinin-1 receptor antagonists, atypical antidepressants, benzodiazepines, 5-HTlA agonists or antagonists, especially 5-HTlA partial agonists, and corticotropin releasing factor (CRF) antagonists. Specific agents include: amitriptyline, clomipramine, doxepin, imipramine and trimipramine; amoxapine, desipramine, maprotiline, nortriptyline and protriptyline; fluoxetine, fluvoxamine, paroxetine and sertraline; isocarboxazid, phenelzine, tranylcypromine and selegiline; moclobemide; venlafaxine; duloxetine; aprepitant; bupropion, lithium, nefazodone, trazodone and viloxazine; alprazolam, chlordiazepoxide, clonazepam, chlorazepate, diazepam, halazepam, lorazepam, oxazepam and prazepam; buspirone, flesinoxan, gepirone and ipsapirone, and pharmaceutically acceptable salts thereof.
1. Modes of Administration
Methods of treatment may include any number of modes of administering a disclosed composition. Modes of administration may include tablets, pills, dragees, hard and soft gel capsules, granules, pellets, aqueous, lipid, oily or other solutions, emulsions such as oil-in-water emulsions, liposomes, aqueous or oily suspensions, syrups, elixirs, solid emulsions, solid. dispersions or dispersible powders. For the preparation of pharmaceutical compositions for oral administration, the agent may be admixed with commonly known and used adjuvants and excipients such as for example, gum arabic, talcum, starch, sugars (such as, e.g., mannitose, methyl cellulose, lactose), gelatin, surface-active agents, magnesium stearate, aqueous or non-aqueous solvents, paraffin derivatives, cross-linking agents, dispersants, emulsifiers, lubricants, conserving agents, flavoring agents (e,g., ethereal oils), solubility enhancers (e.g., benzyl benzoate or benzyl alcohol) or bioa.vaila.bility enhancers (e.g. Gelucire™). In the pharmaceutical composition, the agent may also be dispersed in a microparticle, e,g. a nanoparticulate composition.
For parenteral administration, the agent can be dissolved or suspended in a physiologically acceptable diluent, such as, e.g., water, buffer, oils with or without solubilizers, surface-active agents, dispersants or emulsifiers. As oils for example and without limitation, olive oil, peanut oil, cottonseed oil, soybean oil, castor oil and sesame oil may be used. More generally spoken, for parenteral administration, the agent can be in the form of an aqueous, lipid, oily or other kind of solution or suspension or even administered in the form of liposomes or nano-suspensions.
The term “parenterally,” as used herein, refers to modes of administration which include intravenous, intramuscular, intraperitoneal, intrasternal, subcutaneous and intraarticular injection and infusion.
For transdermal administration, agents may be formulated using one of the following delivery systems application, including single-layer drug-in-adhesive in which the adhesive layer of system contains the agent or multi-layer drug-in-adhesive in which one layer acts for immediate release of the drug and other layers control release of drug from the reservoir with release dependent on membrane permeability and diffusion of drug molecules; reservoir transdermal system with separate liquid compartment containing the agent solution or suspension separated by the adhesive layer allowing with zero order release rates; and matrix systems (monolithic device) with a layer of a semisolid matrix containing an agent solution or suspension and surrounding adhesive layer.
5. Kits
In one aspect, the disclosure provides a kit comprising at least one disclosed compound or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising at least one disclosed compound or a pharmaceutically acceptable salt thereof and one or more of:
In some embodiments, the at least one disclosed compound and the at least one agent are co-formulated. in some embodiments, the at least one disclosed compound and the at least one agent are co-packaged. The kits can also comprise compounds and/or products co-packaged, co-formulated, and/or co-delivered with other components. For example, a drug manufacturer, a drug reseller, a physician, a compounding shop, or a phartnacist can provide a kit comprising a disclosed compound and/or product and another component for delivery to a patient.
That the disclosed kits can be employed in connection with disclosed methods of use.
The kits may further comprise information, instructions, or both that use of the kit will provide treatment for medical conditions in mammals (particularly humans). The information and instructions may be in the form of words, pictures, or both, and the like. in addition or in the alternative, the kit may include the compound, a composition, or both; and information, instructions, or both, regarding methods of application of compound, or of composition, preferably with the benefit of treating or preventing medical conditions in mammals (e.g., humans).
The compounds and processes of the invention will be better understood by reference to the following examples, which are intended as an illustration of and not a limitation upon the scope of the invention.
6. Examples
All NMR spectra were recorded on a 400 MHz AMX Bruker NMR spectrometer, 1H chemical shifts are reported in d values in ppm downfield with the deuterated solvent as the internal standard. Data are reported as follows: chemical shift, multiplicity (s=singlet, bs=broad singlet, d=doublet, t=triplet, q=quartet, dd=doublet of doublets, m=multiplet, ABq=AB quartet), coupling constant, integration, Reversed-phase LCMS analysis was performed using an Agilent 1200 system comprised of a binary pump with degasser, high-performance autosampler, thermostatted column compartment, C18 column, diode-array detector (DAD) and an Agilent 6150 MSD with the following- parameters. The gradient conditions were 5% to 95% acetonitrile with the aqueous phase 0.1% TFA in water over 1.4 minutes. Samples were separated on a Waters Acquity UPLC BEA C18 column (1.7 gm, 1.0×50 mm) at 0.5 mL/min, with column and solvent temperatures maintained at 55° C. The DAD was set to scan from 190 to 300 nm, and the signals used were 220 nm and 254 nm (both with a band width of 4 nm). The MS detector was configured with an electrospray ionization source, and the low-resolution mass spectra were acquired by scanning from 140 to 700 AMU with a step size of 0.2 AMU at 0.13 cycles/second, and peak width of 0.008 minutes. The drying gas flow was set to 13 liters per minute at 300° C. and the nebulizer pressure was set to 30 psi. The capillary needle voltage was set at 3000 V, and the fragmentor voltage was set at 100V. Data acquisition was performed with Agilent Chemstation and Analytical Studio Reviewer software.
a. Abbreviations
b. Preparation of Intermediates
Step A. 5-Chloro-1-(methyl-d3)-1H-pyrazole (minor) and 3-chloro-1-(methyl-d3)-1H-pyrazole and 3-chloro-1-(methyl-d3)-1H-pyrazole (major). 5-Chloro-1H-pyrazole (500 mg, 4.88 mmol, 1.0 eq) and iodomethane-d3 (0.31 mL, 4.88 mmol, 1.0 eq) were dissolved in CH3CN (25 mL). The reaction mixture was cooled to 0° C. , NaH (254 mg, 6.34 mmol, 1.3 eq) was added and stirred at 0° C. for 1 h. after which time the reaction was warmed to room temperature and stirred overnight. The reaction mixture was then quenched with H2O (2 mL) and stirred for 10 min. at 0° C. Solid was filtered through a phase separator. The combined organics were concentrated under reduced pressure. The residue was diluted with CH2Cl2 (5 mL) and hexanes (5 mL). Precipitated solid was filtered through a phase separator again. The combined organics were concentrated under reduced pressure to afford the crude mixture of title compounds (487.5 mg, 83%). This crude mixture of title compounds was used for the next step without further purification. (* Products were low boiling point oils.). 1H-NMR (400 MHz, CDCl3) δ 7.44* (d, J=1.9 Hz, 1H), 7.27 (d, J=2.3 Hz, 1H), 6.19* (d, J=2.0 Hz, 1H), 6.15 (d, J=2.3 Hz, 1H). * indicates minor isomer. The desired masses were not detected by LC-MS.
Step B. 5-Chloro-1-(methyl-d3)-1H-pyrazole-4-sulfonyl chloride (minor) and 3-chloro-1-(methyl-d3)-1H-pyrazole-4-sulforayl chloride (major). Sulfur trioxide dimethylformamide complex (307 mg, 2.0 mmol, 1.2 eq) was added to a slurry of 5-chloro-1-(methyl-d3)-1H-pyrazole (minor) and 3-chloro-1-(methyl-d3)-1H-pyrazole and 3-chloro-1-(methyl-d3)-1H-pyrazole (major) (200 mg, 1.67 mmol, 1.0 eq) in DCE (4 mL) under N2. The reaction was heated to 85° C. for overnight and then cooled to room temperature. To this reaction mixture, thionyl chloride (146 μL, 2.0 mmol, 1.2 eq) was added dropwise and the reaction was slowly heated over the course of 1 h, by which time it had reached 75° C. The mixture was allowed to cool to room temperature and 2 mL of CH2Cl2 and 2 mL H2O were added. The aqueous layer was extracted with CH2Cl2 (3×5 mL), passed through a phase separator and concentrated under reduced pressure to afford the crude mixture of title product (360 mg). This crude mixture of title compounds was used for the next step without further purification and characterized by 1H-NMR and LC-MS after the next step (Sulfonamide formation). ES-MS [M+H]+=218.0 and ES-MS [M+H]+=218.0.
Intermediate Example 2. 2,3-Dyhydrobenzofuran-2,2,3,3-d4
Step A. 1-Bromo-2(2-bromoethoxy-1,1,2,2-d4)benzene. 2-Bromophenol (0.2 mL, 1.73 mmol, 1.0 eq) was dissolved in acetone (8 mL). To this reaction mixture K2CO3 (729 mg, 5.2 mmol, 3.0 eq) and 1,2-dibromoethane-d4 (0.37 mL, 2.6 mmol, 1.5 eq) were added and the resulting solution was heated at 60° C. overnight. The reaction mixture then cooled to room temperature and concentrated under reduced pressure. The residue was partitioned between EtOAc (15 mL) and H2O (4 mL). The aqueous phase was extracted with EtOAc (3×15 mL) and the combined organics were dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by column chromatography (0-10% EtOAc in hexanes) to give the title compound (422 mg, 85%). 1H-NMR. (400 MHz, CDCl3) δ 7.55 (dd, J=7.9, 1.6 Hz, 1H), 7.30-7.24 (m, 1H), 6.93-6.85 (m, 2H). * The desired mass was not detected by LC-MS.
Step B. 2,3-Dihydrobenzofuran-2,2,3,3-d4, A solution of 1.6 M N-butyllithium in hexanes (0.48 mL, 0.77 mmol, 1.1 eq) was added dropwise to a solution of 1-bromo-2-(2-bromo-1,1,2,2-tetradeuterio-ethoxy)benzene (200 mg, 0.70 mmol, 1.0 eq) in THF (5 mL) at −78° C. The reaction was continued at −78° C. for 30 min,, after which time the reaction mixture was warmed to 0° C.. The reaction mixture was quenched with H2O (3 ml) and the aqueous phase was extracted with ether. The combined organic layers were dried over Na2SO4, filtered, and concentrated. The residue was purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (69.5 mg, 79%). 1H-NMR (400 MHz, CDCl3) δ 7.20 (dd, J=7.3, 1.0 Hz, 1H), 7.11 (td, J=7.8, 1.4 Hz, 1H), 6.84 (td, J=7.4, 0.8 Hz, 1H), 6.79 (d, J=8.0 Hz, 1H), * The desired mass was not detected by LC-MS.
A solution of 2,3-dihydrohenzofuran-6-amine (100 mg, 0.74 inmol, 1.0 eq) in acetic acid (3.4 mL) and TFA (0.3 mL) was cooled in an ice bath for 5 min. NaNO2 (62 mg, 0.89 mmol, 1.2 eq) was added in 3 portions followed by KI (369 mg, 2.22 mmol, 3.0 eq). The resulting mixture was stirred at 0° C. for 1.5 h, while the reaction temperature was allowed to warm up to room temperature. The reaction mixture was then quenched with H2O (1 mL). The mixture was extracted with EtOAc (3×10 mL) and the organic layer was washed with sat. aq. Na2SO4, washed with brine, dried over MgSO4 and filtered. The filtrate was condensed under reduced pressure and the residue was purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (182 mg). * The isolated product was still contaminated with residual impurities, but used for the next step without further purification. 1H-NMR (400 MHz, CDCl3) δ 7.16 (dd, J=7.7, 1.4 Hz, 1H), 7.13 (d, J=1.1 Hz, 1H), 6.92 (d, J=7.7 Hz, 1H), 4.55 (t, J=8.7 Hz, 2H), 3.15 (t, J=8.7 Hz, 2H). * The desired mass was not detected by LC-MS.
Step A. 1-(Allyloxy)-2-bromobenzene, 2-Bromophenol (0.34 mL, 2.89 mmol, 1.0 eq) was dissolved in acetone (15.5 mL), To this reaction mixture, K2CO3 (1013 mg, 7.23 mmol, 2.5 eq) and allyl bromide (0.37 mL, 4.05 mmol, 1.4 eq) were added and the resulting solution was heated at 60° C. overnight. The reaction mixture was then cooled to room temperature and concentrated under reduced pressure. The residue was partitioned between EtOAc (15 mL) and H2O (4 mL). The aqueous phase was extracted with EtOAc (3×15 mL) and the combined organic extracts were dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (595.5 mg, 96%). 1H-NMR (400 MHz, CDCl3) δ 7.55 (dd, J=7.9, 1.6 Hz, 1H), 7.26-7.21 (m, 1H), 6.90 (dd, J=8.3, 1.3 Hz, 1H), 6.84 (td, J=7.6, 1.4 Hz, 1H), 6.07 (ddt, J=17.2, 10.3, 5.0 Hz, 1H), 5.49 (dq, J=17.3, 1.4 Hz, 1H), 5.31 (dq, J=10.6, 1.4 Hz, 1H), 4.62 (dt, J=5.0, 1.6 Hz, 2H). * The desired mass was not detected by LC-MS.
Step B. (rac)-3-Methyl-2,3-dihydrobenzofuran. A dried round-bottom flask was charged with 1-allyloxy-2-bromo-benzene (300 mg, 1.41 mmol, 1.0 eq), benzene (13 mL), tributyltin hydride solution (0.57 mL, 2.11 mmol, 1.5 eq) and 2,2′-azobis(2-methylpropionitrile) (23 mg, 0.14 imnol, 0.1 eq). The reaction mixture was heated at 80° C. overnight, after which time the reaction mixture was cooled to room temperature and a 10% aq. KF solution (3 mL) was added. The resulting two-phase mixture stirred vigorously for 3.5 h. The phases were separated and the aqueous layer was extracted with EtOAc (15 mL). The organic phase was washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude residue was purified by column chromatography (0-10% EtOAc in hexanes) to give the title compound (180.5 mg, 95%). 1H-NMR (400 MHz, CDCl3) δ 7.16 (d, J=7.3 Hz, 1H), 7.12 (t, J=7.7 Hz, 1H), 6.87 (td, J=7.4, 0.8 Hz, 1H), 6.79 (d, J=8.0 Hz, 1H), 4.68 (t, J=8.8 Hz, 1H), 4.07 (dd, J=8.5, 7.5 Hz, 1H), 3.55 (h, J=7.0 Hz, 1H), 1.33 (d, J=6.9 Hz, 3H). * The desired mass was not detected by LC-MS.
To a solution 1-methyl-1H-pyrazol-5-ol (100 mg, 1.0 mmol, 1 eq) and 2-iodopropane (0.1 mL, 1.0 mmol, 1 eq) in CH3CN (6 mL) at 0° C. was added NaH (32 mg, 1.33 mmol, 1.3 eq). The mixture was stirred at 0° C. for 1 h and then stirred at room temperature for overnight at which point the reaction was cooled to 0° C. and quenched with H2O (2 mL). The reaction mixture was then filtered, diluted in CH2Cl2 (10 mL) and passed through a phase separator. The combined organic extracts were then concentrated under reduced pressure without heating and purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (40.4 mg, 28%). 1H-NMR (400 MHz, CDCl3) δ 7.31 (d, J=2.0 Hz, 1H), 5.47 (d, J=2.1 Hz, 1H), 4.39 (hept, J=6.1 Hz, 1H), 3.64 (s, 3H), 1.36 (d, J=6.1 Hz, 6H). ES-MS [M+H]+=141.
The compounds shown in Tables 1 and 2 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, CDCl3) δ 7.35 (s, 1H), 7.24 (d, J = 1.9 Hz, 1H), 5.85 (d, J = 2.0 Hz, 1H), 5.81 (s, 1H), 4.24 (q, J = 7.2 Hz, 2H), 4.09 (q, J = 7.3 Hz, 2H), 1.98 − 1.90 (m, 1H), 1.73 (ddd, J = 13.4, 8.5, 5.1 Hz, 1H), 1.45 (t, J = 7.3 Hz, 6H), 1.00 − 0.93 (m, 2H), 0.90 (ddd, J = 8.3, 6.3, 4.3 Hz, 2H), 0.70 (m, 2H), 0.67 (m, 2H).
1H-NMR (400 MHz, CDCl3) δ 7.34 (s, 1H), 7.21 (d, J = 2.0 Hz, 1H), 5.88 (d, J = 2.1 Hz, 1H), 5.83 (s, 1H), 1.97 − 1.87 (m, 1H), 1.72 (tt, J = 8.6, 5.1 Hz, 1H), 0.99 − 0.94 (m, 2H), 0.93 − 0.87 (m, 2H), 0.74 − 0.68 (m, 2H), 0.66 (m, 2H).
1H NMR (400 MHz, CDCl3) δ 7.36a (s, 1H), 7.23b (s, 1H), 6.00a,b (s, 1H), 2.27a,b (s, 3H). a, b: a isomer, b isomer
1H-NMR (400 MHz, CDCl3) δ 7.25 (s, 1H), 5.34 (d, J = 1.8 Hz, 1H), 4.12 (t, J = 6.2 Hz, 2H), 3.34 − 3.27 (m, 2H), 2.15 (p, J = 6.0 Hz, 2H).
1H-NMR (400 MHz, CDCl3) δ 5.97* (s, 1H), 5.92 (s, 1H), 2.23 (s, 3H), 2.21* (s, 3H). *Minor isomer
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, CDCl3) δ 7.16 (d, J = 7.3 Hz, 1H) 7.12 (t, J = 7.7 Hz, 1H), 6.87 (td, J = 7.4, 0.8 Hz, 1H), 6.79 (d, J = 8.0 Hz, 1H), 4.68 (t, J = 8.8 Hz, 1H), 4.07 (dd, J = 8.5, 7.5 Hz, 1H), 3.55 (h, J = 7.0 Hz, 1H), 1.33 (d, J = 6.9 Hz, 3H).
1H-NMR (400 MHz, CDCl3)) δ 7.99 (d, J = 5.0 Hz, 1H), 7.44 (d, J = 7.1 Hz, 1H), 6.83 − 6.76 (m, 1H), 4.73 (t, J = 9.0 Hz, 1H), 4.12 (t, J = 7.5 Hz, 1H), 3.57 (h, J = 7.1 Hz, 1H), 1.35 (d, J = 6.9 Hz, 3H)
1H-NMR (400 MHz, CDCl3) δ 7.07 (td, J = 8.1, 5.9 Hz, 1H), 6.59 − 6.56 (m, 1H), 6.54 (d, J = 8.7 Hz, 1H), 4.68 (t, J = 8.8 Hz, 1H), 4.15 (dd, J = 8.7, 6.2 Hz, 1H), 3.76 − 3.64 (m, 1H), 1.39 (d, J = 6.9 Hz, 3H).
1H-NMR (400 MHz, CDCl3) δ 7.04 (ddd, J = 8.1, 5.8, 0.8 Hz, 1H), 6.55 (ddd, J = 9.3, 8.2, 2.3 Hz, 1H), 6.49 (dd, J = 9.5, 2.3 Hz, 1H), 4.72 (t, J = 8.8 Hz, 1H), 4.12 (dd, J = 8.6, 7.3 Hz, 1H), 3.50 (h, J = 7.0 Hz, 1H), 1.31 (d, J = 6.8 Hz, 3H).
1H-NMR (400 MHz, CDCl3)) δ 6.35 − 6.26 (m, 2H), 4.71 (t, J = 8.9 Hz, 1H), 4.18 (dd, J = 8.8, 6.2 Hz, 1H), 3.66 (h, J = 6.8 Hz, 1H), 1.36 (d, J = 6.8 Hz, 3H).
1H-NMR (400 MHz, CDCl3) δ 7.03 (d, J = 7.5 Hz, 1H), 6.69 (d, J = 7.5 Hz, 1H), 6.62 (s, 1H), 4.67 (t, J = 8.8 Hz, 1H), 4.08 − 4.01 (m, 1H), 3.50 (h, J = 7.1 Hz, 1H), 2.31 (s, 3H), 1.31 (d, J = 6.8 Hz, 3H).
1H-NMR (400 MHz, CDCl3) δ 7.15 − 7.12 (m, 1H), 7.10 (s, 1H), 6.88 (td, J = 7.4, 0.9 Hz, 1H), 6.79 (d, J = 7.8 Hz, 1H), 4.23 (s, 2H), 1.35 (s, 6H).
Step 1. Sulfur trioxide dimethylformamide complex (850 mg, 5.55 mmol, 1.2 eq) was added to a slurry of 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (500 mg, 4.62 mmol, 1.0 eq) in DCE (12 mL) under N2. The reaction was heated to 85° C. for overnight and then cooled to room temperature. Step 2. Thionyl chloride (0.4 mL, 5.55 mmol, 1.2 eq) was added dropwise and the reaction was slowly heated over the course of 1 h, by which time it had reached 75° C. The mixture was allowed to cool to room temperature and CH2Cl2 (5 mL) and H2O (3 mL) were added. The organic extract was separated, filtered through a phase separator and concentrated to afford the crude mixture of title compound (1186.5 mg). This crude mixture of title compound was used for the next step without further purification. ES-MS [M+H]+=207.0.
The compounds shown in Table 3 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
16a
1H-NMR (400 MHz, CDCl3) δ 7.77-7.70 (m, 1H), 6.67 (dd, J = 10.4, 1.7 Hz, 1H), 4.78 (td, J = 9.1, 1.1 Hz, 2H), 3.31-3.22 (m, 2H). ES-MS [M − Cl]+ = 201.0
aThe desired mass was not detected by LC-MS.
Step 1. Sulfur trioxide dimethylformamide complex (262 mg, 1.71 mmol, 1.2 eq) was added to a slurry of 4-(methyl-d3)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine (200 mg, 1.43 mmol, 1.0 eq) in DCE (4.0 mL) under N2. The reaction was heated to 85° C. for overnight and then cooled to room temperature.
Step 2. Thionyl chloride (125.0 μL, 1.71 mmol, 1.2 eq) was added dropwise and the reaction was slowly heated over the course of 1 h, by which time it had reached 75° C. The mixture was allowed to cool to room temperature and CH2Cl2 (5 mL) and H2O (3 mL) were added. The organic extract was separated, filtered through a phase separator and concentrated to afford the crude mixture of title compound (316 mg). This crude mixture of title compound was used for the next step without further purification. ES-MS [M*+H]+=218.0. * The desired mass was not detected by LC-MS. Methyl 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-3-sulfonate mass was detected instead.
Step A. 6-Bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridine. Step 1. 5-Bromo-4-chloro-2-aminopyridine (4 g, 19.3 mmol, 1 eq) was added to a round bottom flask. iPA (64 mL) and N,N-dimethylformamide dimethyl acetal (3.3 mL, 25.1 mmol, 1.3 eq) were added, and the resulting mixture was heated to 82° C. for 3 h, after which time the reaction was cooled to 50° C. Hydroxylamine hydrochloride (1.74 g, 25.1 mmol, 1.3 eq) was added in one portion, and the reaction was stirred at 50° C. for 2 h, after which time the reaction was cooled to room temperature and concentrated under reduced pressure to provide the crude mixture of N-(5-bromo-4-chloro-2-pyridyl)-N′-hydroxy-formamidine as a yellow solid, which was directly used without further purification.
Step 2. N-(5-Bromo-4-chloro-2-pyridyl)-N′-hydroxy-formamidine (4.83 g, 19.3 mmol, 1 eq) was added to a round bottom flask. THF (55 mL) was added, and the resulting mixture was cooled to 0° C. Trifluoroacetic anhydride (8 mL, 57.8 mmol, 3 eq) was then added by syringe, and the reaction was stirred at room temperature overnight, after which time the reaction was quenched with 1 N NaOH (55 mL), and then extracted with CHCl3/iPA solution (3:1). The combined organic extracts were concentrated and dried over Na2SO4, and solvents were filtered and concentrated. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (3.93 g, 87% over 2 steps). 1H-NMR (400 MHz, MeOD) δ 9.51 (s, 1H), 8.80 (s, 1H), 8.25 (s, 1H). ES-MS [M+H]+=232.2.
Step B. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. 6-Bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridine (3.99 g, 17.2 mmol, 1 eq), N-Boc-1,2,3,6-tetrahydropyridine-4-boronic acid pinacol ester (4.78 g, 15.5 minol, 0.95 eq), Na2CO3 (3.71 g, 34.3 mmol, 2 eq), and Pd(dppf)Cl2·DCM (0.703 g, 0.86 mmol, 0.05 eq) were added to a microwave vial, which was sealed and placed under inert atmosphere. 1,4-Dioxane (6 mL) and H2O (6 mL) were added via syringe, and the reaction mixture was purged with nitrogen. The resulting reaction mixture was then heated with microwave irradiation at 140° C. for 15 min., after which time the reaction mixture was filtered through Celite with EtOAc. The aqueous layer was extracted with EtOAc. The combined organic layers were dried over Na2SO4 and concentrated under reduced pressure. The reaction was purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (4.075 g, 70%). 1H-NMR (400 MHz. CDCl3) δ 8.42 (d, J=0.7 Hz, 1H), 8.32 (s, 1H), 7.80 (d, J=0.7 Hz, 1H, 5.83 (bs, 1H), 4.10 (q, J=2.9 Hz, 2H), 3.66 (t, J=5.6 Hz, 2H), 2.47 (bs, 2H), 1.51 (s, 9H). ES-MS [M+H]+=335.2.
tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (731 mg, 2.18 mmol, 1 eq) was added to a round bottomed flask, sealed with a rubber septum, and placed under an N2 atmosphere. THF (22 mL) was added, and the mixture was cooled to 0° C., and 2 M BH3·DMS in THF (6.6 mL, 13.1 mmol, 6 eq) was slowly added via syringe. After 5 min. at 0° C., the reaction was warmed to room temperature and allowed to stir overnight, after which time additional 2 M BH3·DMS in THF (6.6 mL, 13.1 mmol, 6 eq) was slowly added via syringe, and the reaction stirred overnight, after which time the reaction was cooled to 0° C. and quenched with 3 N NaOH (20.0 mL). The mixture was stirred at 60° C. for 3 h, after which time the reaction was concentrated under reduced pressure to remove THF, and the aqueous layer was extracted with EtOAc (3×30 mL). The combined organic layers were washed with brine, and then dried over Na2SO4 and concentrated under reduced pressure. The crude residue was purified by column chromatography (10-100% EtOAc in hexanes) to provide the title compound (346 mg, 47%). 1H-NMR (400 MHz, CDCl3) δ 8.42 (d, J=0.8 Hz, 1H), 8.34 (s, 1H), 7.86 (s, 1H), 4.31 (bs, 2H), 3.13 (tt, J=12.1, 3.2 Hz, 1H), 2.88 (t, J=12.9 Hz, 2H), 2.03-2.00 (m, 2H), 1.58 (td, J=12.6, 4.2 Hz, 2H), 1.49 (s, 9H), ES-MS [M+H]+=337.3.
To a solution of Zn (5.06 g, 77.4 mmol, 3.6 eq) in DMA (50 mL), and was added 6-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridine (5 g, 21.5 mmol, 1 eq), tert-butyl 4-iodopiperidine-1-carboxylate (7.03 g, 22.6 mmol, 1.05 eq) and pyridine-2-carboxamidine (521.1 mg, 4.3 mmol, 0.2 eq), NiCl2(DME) (945.2 mg, 4.3 mmol, 0.2 eq), NaI (3.22 g, 21.5 mmol, 1 eq). The mixture was stirred at room temperature for 4 h under N2. The reaction mixture was filter and diluted with H2O (400 mL) and extracted with EtOAc (3×300 mL). The combined organic layers were washed with brine (2×300 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a crude residue of title product.The residue was purified by column chromatography (0-60% EtOAc in Petroleum ether) to give the title compound (1.4 g, 19%). 1H-NMR (400 MHz, CDCl3) δ 8.42 (d, J=0.8 Hz, 1H), 8.34 (s, 1H), 7.86 (s, 1H), 4.31 (bs, 2H), 3.13 (tt, J=12.1, 3.2 Hz, 1H), 2.88 (t, J=12.9 Hz, 2H), 2.03-2.00 (m, 2H), 1.58 (td, J=12.6, 4.2 Hz, 2H), 1.49 (s, 9H), ES-MS [M+H]+=337.3.
Step A. Methyl 6-(1-(tert-butoxyearbonyl)-1,2,3,6-tetrahydropyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylate To a solution of methyl 6-bromo-[1,2,4]triazolo [1,5-a]pyridine-7-carboxylate (6.5 g, 25.4 mmol, 1 eq) in 1,4-dioxane (75 mL) and H2O (15 mL) were added tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) -3,6-dihydro-2H-pyridine-1-carboxylate (7.85 g, 25.4 mmol, 1 eq), Pd(dppf)Cl2 (1.86 g, 2.5 mmol, 0.1 eq) and K3PO4. (16.2 g, 76.2 mmol, 3 eq) at room temperature. The mixture was then stirred at 100° C. for 12 h. After which time, the reaction mixture was diluted with H2O (50 mL) and extracted with EtOAc (3×80 mL). The combined organic layers were washed with brine (80 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a crude residue of the title product. The residue was purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (8.1 g, 89%). 1H-NMR (400 MHz, CDCl3) δ 8.44 (d, J=6.8 Hz, 2H), 8.32 (s, 1H), 5.72 (br s, 1H), 4.09 (br d, J=2.4 Hz, 2H), 3.94 (s, 3H), 3.67 (t, J=5.5 Hz, 2H), 2.34 (br s, 2H), 1.51 (s, 9H).
Step B. 6-(1-(tert-Butoxycarbonyl)-1,2,3,6-tetrahydropyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylie acid To a solution of methyl 6-(1-tert-butoxycarbonyl-3,6-dihydro-2H-pyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylate (994.4 mg, 2.8 mmol, 1 eq) in THF (4 mL) and H2O (4 mL),was added LiOH·H2O (232.9 mg, 5.6 mmol, 2 eq) at 0° C. The solution was then stirred at room temperature for 12 h under N2. After which time, the reaction mixture was acidified with 2M aq HCl solution to pH=3˜4 and filtered. The filtered cake was added to toluene (2 mL), concentrated under reduced pressure to give the title compound (850 mg, 89%). 1H-NMR (400 MHz, MeOD) δ 8.71 (s, 1H), 8.52 (s, 1H), 8.28 (s, 1H), 5.86-5.73 (m, 1H), 4.08 (br s, 2H), 3.66 (br s, 2H), 2.42 (br d, J=1.5 Hz, 2H), 1.51 (s, 9H).
Step C. tert-Butyl 4-(7-(((benzyloxy)carbonyl)amino-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate To a solution of 6-(1-tert-butoxycarbonyl-3,6-dihydro-2H-pyridin-4-yl)[1,2]triazolo[1,5-a]pyridine-7-carboxylic acid (850 mg, 2.5 mmol, 1 eq) in toluene (3 mL) were added TEA (687 uL, 4.9 mmol, 2 eq), DPPA (1.1 mL, 4.9 mmol, 2 eq), and phenylmethanol (513.3 uL, 4.9 mmol, 2 eq) at room temperature. The reaction mixture was then stirred at 80° C. for 5 h. After which time, the reaction mixture was extracted with EtOAc (3×5 mL), washed with brine (3×3 mL), dried over Na2SO4. The organics were filtered and concentrated under reduced pressure to give a crude residue of the title compound. The residue was then purified by column chromatography (0-80% EtOAc in hexanes) to give the title compound (750 mg, 67%). 1H-NMR (400 MHz, CDCl3) δ 8.51 (s, 1H, 8.28 (d, J=12.8 Hz, 2H), 7.47-7.36 (m, 5H), 6.88 (s, 1H), 5.94 (br s, 1H), 4.77 (br d, J=6.5 Hz, 2H), 4.11 (br d, J=2.4 Hz, 2H), 3.67 (t, J=5.5 Hz, 2H), 2.37 (br s, 2H), 1.55-1.42 (m, 9H).
Step D. tert-Butyl 4-(7-amino-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate To a solution of tert-butyl 4-(7-(benzyloxycarbonylamino)[1,2,4]triazolo[1,5-a]pyridin-6-yl]-3,6-dihydro-2H-pyridine-1-carboxylate (2.2 g, 4.9 mmol, 1 eq) in EtOH (50 mL), was added Pd(OH)2 (206.2 mg, 1.5 mmol, 0.3 eq) at room temperature. The mixture was stirred at 50° C. for 24 h under H2 (50 Psi). The reaction mixture was then filtered, and the filtrate was concentrated under reduced pressure to give the title compound (1.3 g, 83%). 1H-NMR (400 MHz, CDCl3) δ 8.19 (s, 1H), 8.10 (s, 1H), 6.81 (s, 1H), 4.32 (br dd, J=5.5, 12.3 Hz, 2H), 4.28-4.22 (m, 2H), 2.85 (br t, J=12.4 Hz, 2H), 2.65-2.54 (m, 1H), 2.00 (br d, J=13.1 Hz, 2H), 1.64-1.53 (m, 2H), 1.49 (s, 9H).
Step E. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate A solution of tert-butyl 4-(7-amino-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (1.5 g, 4.7 mmol, 1 eq) in CH3CN (15 mL) was added CuCl2 (762.5 mg, 5.7 mmol, 1.2 eq) followed by tert-butyl nitrite (843.2 uL, 7.1 mmol, 1.5 eq) at 0° C. The mixture was stirred at 0° C. for 3 h. The reaction mixture was quenched with H2O (10 mL) and extracted with EtOAc (3×10 mL). Combined organics were washed with brine (3×10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a crude residue of the title product. The residue was purified by column chromatography (0-60% EtOAc; in Petroleum ether) to give the title compound (800 mg, 50%). 1H-NMR (400 MHz, CDCl3) δ 8.42 (d, J=0.8 Hz, 1H), 8.34 (s, 1H), 7.86 (s, 1H), 4.31 (bs, 2H), 3.13 (tt, J=12.1, 3.2 Hz, 1H), 2.88 (t, J=12.9 Hz, 2H), 2.03-2.00 (m, 2H), 1.58 (td, J=12.6, 4.2 Hz, 2H), 1.49 (s, 9H). ES-MS [M+H]+=337.3.
Step A. 2-(Methyl-d3)thiazole To a solution of thiazole (5 g, 58.7 mmol, 1 eq) in THF (100 mL) was added a solution of n-BuLi (2.5 M, 25.9 mL, 1.1 eq) drop-wise at −78° C. over a period of 10 min, under N2. During which time the temperature was maintained below −60° C. After which time, trideuterio(iodo)metha.ne (4.7 mL, 76.4 mmol, 1.3 eq) was added at −60° C. and stirred at 0° C. for another 2 h. The reaction mixture was then quchened with sat. aq. NH4Cl (10 mL), extracted with EtOAc (2×25 mL). The combined organic layers were washed with brine (1×10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a crude mixture of the title compound (4 g, 66%). This was used for the next step without further purification.
Step B. 2-(Methyl-d3)thiazole-5-sulfonyl chloride To a solution of 2-(trideuteriomethyl)thiazole (3.5 g, 34.3 mmol, 1 eq) in THF (70 mL) was added n-BuLi (2.5 M, 20.6 mL, 1.5 eq) dropwise at −78° C. and stirred 30 min. under N2, and then SO2 was bubbled into at −65° C. for 30 min. The reaction mixture was warmed to room temperature slowly and stirred for 3 h. After which time, NCS (13.72 g, 102.8 mmol, 3 eq) was added at 0° C. and stirred another 16 h at room temperature. The reaction mixture was concentrated under reduced pressure to give a residue. The residue was purified by column chromatography (SiO2, Petroleum ether/EtOAc=1:0 to 0:1) to give the title compound (3.9 g, 56%). 1H NMR (400 MHz, CDCl3) δ 8.30 (s, 1H).
The compounds shown in Table 4 may be prepared similarly too the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.40 (s, 1H), 7.95 (s. 1H), 6.85 (t, J = 54.4 Hz, 1H), 4.40-4.25 (m, 2H), 3.06-3.00 (m, 1H), 2.84 (t, J = 12.8 Hz, 2H), 1.96 (d, J = 13.3 Hz, 2H), 1.66 (td, J = 12.1, 3.8 Hz, 2H), 1.50 (s, 9H). ES-MS [M + H]+ = 353.4.
1H NMR (400 MHz, MeOD) δ 8.93 (s, 1H), 8.23 (d, J = 2.1 Hz, 1H), 8.14 (s, 1H), 8.06 (d, J = 2.2 Hz, 1H), 3.63-3.54 (m, 2H), 3.48 (tt, J = 12.2, 3.1 Hz, 1H), 3.29-3.20 (m, 2H), 2.29 (d, J = 13.9 Hz, 2H), 2.03 (qd, J = 13.4, 4.0 Hz, 2H).
Step A. tert-Butyl 4-(7-(1-methyl-1H-pyrazol-3-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (50 mg. 0.15 mmol, 1 eq), 1-methylpyrazole-3-boronic acid pinacol ester (37 mg, 0.18 mmol, 1.2 eq), Na2CO3 (32 mg, 0.30 mmol, 2 eq), and Pd(dppf)Cl2·DCM (6.1 mg, 0.01 mmol, 0.1 eq) were added to a microwave vial, which was sealed and placed under an inert atmosphere. 1,4-Dioxane (0.8 mL) and H2O (0.8 mL) were added via syringe, and the reaction mixture was purged with N2. The resulting mixture was then heated in a microwave reactor at 140° C. for 15 min., after which time the reaction mixture was filtered through Celite and the Celite was washed with EtOAc. The aqueous layer was extracted with EtOAc (3×5 mL), and the combined organics were dried over MgSO4, and concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (38.1 mg, 67%), 1H-NMR (400 MHz, CDCl3) δ 8.42 (d, J=0.8 Hz, 1H), 8.33 (s, 1H), 8.00 (d, J=0.8 Hz, 1H). 7.40 (d, J=2.3 Hz, 1H), 6.50 (d, J=2.3 Hz, 1H), 5.88 (bs, 1H), 4.10 (bs, 2H), 3.98 (s, 3H), 3.49 (t, J=5.5 Hz, 2H), 2.10-2.07 (m, 2H), 1.49 (s, 9H). ES-MS [M+H]+=381.4.
Step B. tert-Butyl 4-(7-(1-methyl-1H-pyrazol-3yl)-[1,2,4]triazolol[1,5-a]pyridin6-yl)piperidine-1-carboxylate. tert-Butyl 4-[7-(1-methylpyrazol-3-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-3,6-dihydro-2H-pyridine-1-carboxylate (38 mg, 0.10 mmol, 1 eq), Pd(OH)2/C (7.0 mg, 0.05 mmol, 0.5 eq), and 1 g/mL solution of ammonium formate (0.5 mL, 5.00 mmol, 20 eq) in H2O were added to a microwave vial, which was sealed and placed under a H2 atmosphere. EtOH (0.5 mL) was added by syringe, and the mixture was heated at 70° C. for 4 h. The resulting mixture was filtered through Celite and the Celite was washed with MeOH and concentrated under reduced pressure. The residue was then diluted with CH2Cl2 (3 mL) and H2O (1 mL) and extracted with CH2Cl2 (3×5 mL). The combined organics were passed through a phase separator, concentrated, and then purified by column chromatography (0-100 %) EtOAc in hexanes) to give the title compound (38 mg, 99%). 1H-NMR (400 MHz, CDCl3) δ 8.45 (d, J=0.8 Hz, 1H), 8.31 (s, 1H), 7.82 (d, J=0.8 Hz, 1H), 7.47 (d, J=2.2 Hz, 1H), 6.46 (dd, J=2.2, 0.7 Hz, 1H), 4.31-4.16 (m, 2H), 3.99 (d, J=0.8 Hz, 3H), 3.54 (tt, J=12.0, 3.2 Hz, 1H, 2.74 (t, J=12.8 Hz, 2H), 1.93-1.90 (m, 2H), 1.54 (qd, J=12.7, 4.5 Hz, 2H), 1.47 (s, 9H), ES-MS [M+H]+=383.4.
Step A. tert-Butyl 4-(7-vinyl-[1,2,4]triazolo[1,5-a]py ridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (91 mg, 0.27 mmol, 1 eq), potassium trifluoro(vinyl)boron (72 mg, 0.41 mmol, 1.5 eq), Pd(dppf)Cl2 (9 mg, 0.01 mmol, 0.05 eq), and Na2CO3 (59 mg, 0.55 mmol, 2 eq) were added to a microwave vial, sealed, and placed under an inert atmosphere. 1,4-Dioxane (0.5 mL) and H2O (0.5 mL) were added via syringe and the mixture was purged with N2. The reaction mixture was heated in a microwave reactor at 140° C. for 15 min., after which time the reaction mixture was filtered through a plug of Celite. The aqueous layer was extracted with EtOAc (3×2 mL), and the combined organics were dried over Na2SO4, concentrated, and purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (64 mg, 64%). ES-MS [M+H]+=327.4.
Step B. tert-Butyl 4-(7-cyclopropyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. tert-Butyl 4-(7-vinyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (20 mg, 0.06 mmol, 1 eq), NaH (1.5 mg, 0.06 mmol, 1 eq), and trimethylsulfoxonium iodide (13 mg, 0.06 mmol, 1 eq) were dissolved in DMF (0.5 mL). The mixture was stirred at room temperature overnight, at which time the reaction mixture was quenched with H2O (1 mL). The mixture was diluted with a CHCl3/iPA. solution (3:1) and passed through a phase separator. The organic layer was concentrated under reduce pressure and purified by column chromatography (0-10% MeOH in CH2Cl2) to give the title compound (15 mg, 73%). 1H-NMR (400 MHz, CDCl3) δ 8.29 (d, J=0.8 Hz, 1H), 8.25 (s, 1H), 7.20 (d, J=0.9 Hz, 1H), 5,72 (bs, 1H), 4.11-4.09 (m, 2H), 3,66 (t, J=5.6 Hz, 2H), 2.49 (bs, 2H), 1.96-1.89 (m, 1H), 1.51 (s, 9H), 1.12-1.07 (m, 2H), 0.84 (dt, 6.6, 4.8 Hz, 2H). ES-MS [M+H]+=341.4.
Step C. tert-Butyl 4-(7-cyclopropyl-[1,2,4triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate. tert-Butyl 4-(7-cyclopropyl1,2,1]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (251 mg, 0.74 mmol, 1 eq) and Pd(OH)2/C (104 mg, 0.74 mmol, 1.0 eq) were added to a microwave vial. A 50% w/w solution of ammonium formate in H2O (1.5 mL, 14.8 mmol, 20.0 eq) and EtOH (2 mL) were added via syringe, sealed, and the mixture was purged with H2. The reaction was heated at 70° C. for 4 h, after which time the reaction mixture was passed through a plug of Celite and washed with MeOH and concentrated. The residue was diluted with H2O and CHCl3/iPA solution (3:1), extracted with CHCl3/iPA solution (3:1), dried over Na2SO4, and concentrated under reduced pressure. The crude residue was purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (205 mg, 81%). 1H-NMR. (400 MHz, CDCl3) δ 8.34 (s, 1H), 8.24 (s, 1H), 7.34 (s, 1H), 4.32 (bs, 2H), 3.23 (tt, J=12.2, 3.3 Hz, 1H), 2.86 (t, J=12.5 Hz, 2H), 2.04 (dd, J=8.5, 5,4 Hz, 1H), 1.98 (d, J=14.1 Hz, 2H), 1.62 (qd, 12.6, 4.3 Hz, 2H), 1.50 (s, 9H), 1.14-1.09 (m, 2H), 0.84-0.80 (m, 2H). ES-MS [M+H]+=343.4.
Step A. tert-Butyl 5-cyano-3-methyl-3′,6′-dihydro-[2,4′-bipyridine]-1′(2′H)-carboxylate. 6-Chloro-5-methylnicotinonitrile (915 mg, 6.0 mmol, 1 eq), tetrakis(triphenylphosphine)palladium (0) (700 mg, 0.6 mmol, 0.1 eq), (N-Boc-3,6-dihydro-2H-pyridine-4-boronic acid pinacol ester (2.05 g, 6.6 mmol, 1.1 eq), and K2CO3 (2.5 g, 18.0 mmol, 3 eq) were charged into two microwave vials which were sealed and placed under an inert atmosphere. 1,4-Dioxane (33 mL) and H2O (6 mL) were added via syringe and the reaction mixture was purged with N2 and stirred at 100° C. After 2 h, the reaction mixture was filtered through a pad of Celite which was rinsed thoroughly with EtOAc/CH2Cl2. The filtrate was concentrated under reduced pressure and purified using column chromatography (0-100% EtOAc in hexanes) to provide the title compound (1.65 g, 92%). 1H-NMR (400 MHz, DMSO-d6) δ 8.81 (d, J=1.6 Hz, 1H), 8.21-8.15 (m, 1H), 6.03 (s, 1H), 4.07-3.97 (m, 2H), 3.54 (t, J=5.5 Hz, 2H), 2.46 (dt, J=7.3, 4.3 Hz, 2H), 2.38 (s, 3H), 1.43 (s, 9H). ES-MS [M+H-tBu]+=244.4.
Step B. tert-Butyl 4-(5-cyano-3-methylpyridin-2-yl)piperidine-1-carboxylate. tert-Butyl 5-cyano-3-methyl-3′,6′-dihydro[2,4′-bipyridine]-1′(2′H)-carboxylate (60 mg, 0.2 mmol, 1 eq) was dissolved in MeOH (2 mL) and purged with N2. 10% Pd/C (30 mg) was added. The reaction mixture was stirred under H2 atmosphere (1 atm, balloon) for 3 h then filtered through a pad of Celite which was rinsed thoroughly with MeOH and CH2Cl2. The filtrate was concentrated and purified using column chromatography (0-60% EtOAc in hexanes) to provide the title compound (24 mg, 40%). 1H-NMR (400 MHz, CDCl3) δ 8.65 (d, J=1.8 Hz, 1H), 7.71-7.62 (m, 1H), 4.27 (m, 2H), 3.03 (tt, J=11.6, 3.6 Hz, 1H), 2.82 (m, 2H), 2.39 (s, 3H), 1.97-1.77 (m, 2H), 1.68 (m, 2H), 1.46 (s, 9H). ES-MS [M+H-tBu]+=246.0.
The compounds shown in Table 5 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, CDCl3) δ 8.65 (d, J = 1.8 Hz, 1H), 7.71-7.62 (m, 1H), 4.27 (m, 2H), 3.03 (tt, J = 11.6, 3.6 Hz, 1H), 2.82 (m, 2H), 2.39 (s, 3H), 1.97-1.77 (m, 2H), 1.68 (m, 2H), 1.46 (s, 9H). ES-MS [M + H − tBu]+ = 246.0
1H-NMR (400 MHz, CDCl3) δ 8.51 (s, 1H), 8.42 (s, 1H), 8.29 (s, 1H), 4.30 (br s, 2H), 3.99 (s, 3H), 3.53-3.66 (m, 1H), 2.88 (br s, 2H), 1.97 (br d, J = 12.6 Hz, 2H), 1.60 (br d, J = 4.0 Hz, 2H), 1.49 (s, 9H). ES-MS [M + H − tBu]+ = 361. * Reaction condition: Pd/C, H2, MeOH, 50 psi, 50° C.
Step A. tert-Butyl 4-(7-fluoro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. 6-Bromo-7-fluoro-[1,2,4]triazolo[1,5-a]pyridine (498 mg, 2.31 mmol, 1.2 eq), N-Boc-3,6-dihydro-2H-pyridine-4-boronic acid pinacol ester (600 mg, 1.94 mmol, 1.0 eq), Pd(dppf)Cl2·DCM (159 mg, 0.19 mmol, 0.1 eq), and Na2CO3 (629 mg, 5.82 mmol, 3.0 eq) were added to a microwave vial. The reaction mixture was purged with N2. A 1,4-dioxane/H2O solution (7:1) (8 mL, degassed) was then added via syringe. The resulting mixture was heated in a microwave reactor at 140° C. for 30 min, after which time the reaction was cooled to room temperature and the reaction mixture was diluted with H2O (3 mL) and extracted with CH2Cl2 (3×10 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated to dryness. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes to 0-20% MeOH in CH2Cl2) to give the title compound (464.0 mg, 75%). 1H-NMR (400 MHz, CDCl3) δ 8.42 (d, J=6.7 Hz, 1H), 8.21 (s, 1H), 7.30 (d, J=10.3 Hz, 1H), 5.98 (s, 1H), 4.08-3.98 (m, 2H), 3.58 (t, J=5.6 Hz, 2H), 2.43 (s, 2H), 1.41 (s, 9H). ES-MS [M+H]+=319.0.
Step B. tert-Butyl 4-(7-fluoro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate. tert-Butyl4-(7-fluoro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (464 mg, 1.46 mmol, 1.0 eq) was dissolved in EtOH (4 mL), and aqueous ammonium formate solution (1g/mL) (1.7 mL 26.6 mmol, 18.3 eq) and 20% wt Pd(OH)2/C (102 mg, 0.15 mmol, 0.1 eq) were added. The reaction mixture was purged with H2. The reaction mixture was heated at 70° C. in a microwave vial for 2 h. The reaction mixture was cooled to room temperature and solvents were filtered and concentrated under reduced pressure. The crude residue was diluted with CH2Cl2 (10 mL) and H2O (2 mL), and extracted with CH2Cl2 (3×10 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated to dryness. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (436.5 mg, 93%). 1H-NMR (400 MHz, CDCl3) δ 8.29 (d, J=6.3 Hz, 1H), 8.12 (s, 1H), 7.23 (d, J=9.8 Hz, 1H), 4.14 (s, 2H), 2.84 (t, J=11.9 Hz, 1H), 2.71 (s, 2H), 1.80 (d, J=12.2 Hz, 2H), 1.49 (q, J=11.8 Hz, 2H), 1.32 (s, 9H). ES-MS [M+H]+=312.0.
The compounds shown in Table 6 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, CDCl3) δ 8.62 (s, 1H), 8.44 (s, 1H), 8.12 (t, J = 0.9 Hz, 1H), 4.31 (bs, 2H), 3.06 (t, J = 12.2 Hz, 1H), 2.87-2.81 (m, 2H), 1.96 (d, J = 12.9 Hz, 2H), 1.64 (qd, J = 12.7, 4.2 Hz, 2H), 1.50 (s, 9H). ES-MS [M + H]+ = 371.4.
1H-NMR (400 MHz, CDCl3) δ 8.29 (d, J = 6.3 Hz, 1H), 8.12 (s, 1H), 7.23 (d, J = 9.8 Hz, 1H), 4.14 (s, 2H), 2.84 (t, J = 11.9 Hz, 1H), 2.71 (s, 2H), 1.80 (d, J = 12.2 Hz, 2H), 1.49 (q, J = 11.8 Hz, 2H), 1.32 (s, 9H). ES-MS [M + H]+ = 312.0.
1H-NMR (400 MHz, CDCl3) δ 8.46 (s, 1H), 8.45 (s, 1H), 7.89 (d, J = 3.1 Hz, 1H), 4.34 (bs, 2H), 2.93-2.83 (m, 5H), 1.91 (d, J = 12.9 Hz, 2H), 1.63 (qd, J = 12.7, 4.3 Hz, 2H), 1.50 (s, 9H), 1.38 (t, J = 7.4 Hz, 3H). ES-MS [M + H]+ = 331.4 ES-MS [M + H]+ = 318.0
Step A. tert-Butyl (1R,5S)-3-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate. 6-Bromo-7-methyl[1,2,4]triazolo[1,5-a]pyridine (228 mg, 1.07 mmol, 1.2 eq), tert-butyl (1R,5S)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate (300 mg, 0.89 mmol, 1 eq), Na2CO3 (290 mg, 2.68 mmol, 3.0 eq), and Pd(dppf)Cl2·DCM (73 mg, 0.09 mmol, 0.1 eq) were added to a microwave vial. The reaction mixture was purged with nitrogen. A 1,4-dioxane/H2O solution (4:1) (5 mL, degassed) was then added via syringe. The resulting mixture was heated in a microwave reactor at 140° C. for 30 min. At room temperature, the reaction mixture was filtered through Celite and the Celite was washed with EtOAc (3×10 mL). The combined organics were concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (257 mg, 84%).1H-NMR (400 MHz, CDCl3) δ 8.27 (s, 1H), 8.27 (s, 1H), 7.52 (s, 1H), 6.11 (s, 1H), 4.47 (t, J=29.0 Hz, 2H), 3.04 (dd, J=53.4, 15.2 Hz, 1H), 2.39 (s, 3H), 2.32 (m, 1H), 2.15-1.95 (m, 3H), 1.84 (m, 1H), 1.51 (s, 9H). ES-MS [M+H]+=341.0.
Step B. tert-Butyl (1R,5S)-3-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-8-azabicyclo[3.2.1]oetane-8-carboxylate. tert-Butyl 3-(7-methyl-[1,24]triazolo[1,5-a]pyridin-6-yl)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate (257 mg, 0.75 mmol, 1.0 eq) and 20% wt Pd(OH)2/C (53 mg, 0.08 mmol, 0.1 eq) were added to a microwave vial. A 50% w/w solution of ammonium formate in H2O (0.7 mL, 13.79 mmol, 18.3 eq) and EtOH (4 mL) were added via syringe, sealed, and the mixture was purged with H2. The reaction mixture was heated at 70° C. for overnight. The reaction mixture was cooled to room temperature and the reaction mixture was passed through a plug of Celite and washed with MeOH and concentrated under reduced pressure. The residue was diluted with H2O (5 mL) and CH2Cl2 (10 mL), extracted with CH2Cl2 (3×10 mL), and concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution over 5 min.) to give the title compound (136.5 mg, 52%, approximately 6:1 ratio of exo/endo isomers). 1H-NMR (400 MHz, CDCl3) 8.58 (s, 1H), 8.46 (s, 1H), 7.94 (s, 1H), 4.38 (s, 2H), 3.41 (p, J=9.6 Hz, 1H), 2.59 (s, 3H), 2.16-2.06 (m, 2H), 1.80 (m, 6H), 1.48 (s, 9H). ES-MS [M+H]+=343.0.
Step A. tert-Butyl 3-(7-methyl[1,2,4]triazolo[1,5-a]pyridin-6-yl)-2,5-dihydro-1H-pyrrole-1-carboxylate. 6-Bromo-7-methyl-1,3-diazaindolizine (119 mg, 0.56 nimol, 1.1 eq), 1-boc-3-pyrroline-3-boronic acid pinacol ester (150 mg, 0.51 mmol, 1 eq), Na2CO3 (165 mg, 1.53 mmol, 3 eq), and Pd(dppf)Cl2·DCM (42 mg, 0.051 mmol, 0.1 eq) were added to a vial. The reaction was placed under an inert atmosphere, and then degassed 1,4-dioxane (0.5 mL) and degassed H2O (0.5 mL) were added via syringe. The mixture was heated to 140° C. in a microwave reactor for 15 min., after which point the mixture was allowed to cool to room temperature and filtered through Celite and thoroughly washed with EtOAc. The aqueous layer was then extracted with EtOAc (3×5 mL), and the combined organic layers were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude mixture was purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (143.8 mg, 94%). ES-MS [M—H]+=301.5.
Step B. tert-Butyl 3-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)pyrrolidine-1-carboxylate. tert-Butyl 3-(7-methyl[1,2,4]triazolo[1,5-a]pyridine-6-yl)-2,5-dihydropyrrole-1-carboxylate (144 mg. 0.48 mmol, 1 eq), 20% wt Pd(OH)2/C (28 mg, 0.04 mmol, 0.08 eq), and 50% w/w solution of ammonium formate in H2O (1050 mg, 8.74 mmol, 18.3 eq) were added to a vial. The mixture was placed under a H2 atmosphere, and then EtOH (4.6 mL) was added via syringe. The mixture was then heated at 70° C. for 2 h, after which time the reaction was allowed to cool to room temperature, and the resulting mixture filtered through Celite and the Celite was thoroughly washed with MeOH. The filtrate was concentrated, and then taken up in CH2Cl2 (3 mL) and H2O (3 mL) and the aqueous layer was extracted with CH2Cl2 (3×3 mL). The combined organic layers were dried with Na2SO4, filtered, and concentrated under reduced pressure. The crude material was purified by column chromatography (0-40% of 10% MeOH with 1% NH4OH in CH2Cl2) to provide the title compound (65.1 mg, 45%). ES-MS [M+H]+=303.4.
Step A. (rac)-tert-Butyl trans-3-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate and tert-butyl 4-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate. tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (314 mg, 1.0 mmol, 1.0 eq) was dissolved in THF (3 mL), and 2 M BH3·DMS in THF (6 mL, 12 mmol, 12.0 eq) was added dropwise at 0° C. After 5 min., the reaction mixture was warmed to room temperature and stirred for 24 h. after which time the reaction mixture was cooled to 0° C. and a MeOH/H2O solution (1:1) (10 mL) was added slowly to quench the reaction. To this reaction mixture, a solution of 3 M aqueous NaOH (5 mL, 15.0 mmol, 15.0 eq) and 35% H2O2 (5 mL, 58.16 mmol, 58 eq) were added and stirred for 30 min. at 0° C., after which time the reaction mixture was warmed up to room temperature and stirred for 24 h. The reaction mixture was concentrated under reduced pressure and extracted with EtOAc (3×20 mL). The combined extracts were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC to afford tert-butyl (3R)-3-hydroxy-4-(7-methyl[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (100 mg, 30%) 1H-NMR (400 MHz, CDCl3) δ 7.47 (s, 1H), 7.26 (s, 1H), 6.44 (s, 1H), 3.61 (s, 1H), 3.35 (s, 1H), 2.94 (td, J=10.1, 4.8 Hz, 1H), 2.08-1.79 (m, 3H), 1.63 (s, 3H), 1.05-0.94 (m, 1H), 0.73 (dd, J=13.0, 4.4 Hz, 1H), 0.63 (s, 9H). ES-MS [M+H]+=333.2 and tert-butyl 4-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (120 mg, 36%) 1H-NMR (400 MHz, CDCl3) δ 860 (d, J=2.0 Hz, 1H), 8.30-8.21 (m, 1H), 7.49 (d, J=2.5 Hz, 1H), 4.18-3.93 (m, 2H), 3.32 (d, J=17.8 Hz, 2H), 2.73 (d, J=1.5 Hz, 3H), 2.60 (s, 1H), 2.11-1.93 (m, 4H), 1.47 (s, 9H). ES-MS [M+H]+=333.2.
Step B1. (rac)-tert-Butyl trans-3-fluoro-4(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate. (rac)-tert-Butyl trans-3-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (35 mg, 0.11 mmol, 1.0 eq) was dissolved in CH2Cl2 (1 mL) and the resulting mixture was cooled to −78° C. To this reaction mixture, Deoxo-Fluor® (0.1 mL, 0.54 mmol, 5.6 eq) was added dropwise and the reaction mixture was stirred at −78° C. for 10 min. After which time, the reaction mixture was slowly warmed up to room temperature and stirred for 2 h. The reaction mixture was quenched with H2O (2 mL) and extracted with CH2Cl2 (2×2 ml-:). The combined extracts were passed through a phase separator and concentrated under reduced pressure. The crude residue was then purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound (25 mg, 71%). 1H-NMR. (400 MHz, CDCl3) δ 8.46 (s, 1H), 8.26 (s, 1H), 7.55 (t, J=1.0 Hz, 1H), 4.59 (td, J=10.6, 4.9 Hz, 1H), 4.47 (td, J=10.1, 5.1 Hz, 1H), 3.16-3.01 (m, 1H), 2.92-2.70 (m, 2H), 2.49 (d, J=1.0 Hz, 3H), 2.02-1.91 (m, 1H), 1.78-1.61 (m, 2H), 1.50 (s, 9H). ES-MS [M+H]+=335.4
Step B2. tert-Butyl 4-fluoro-4-(7-methyl[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate. tert-Butyl4-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (215 mg, 0.65 mmol, 1.0 eq) was dissolved in CH2Cl2 (5 mL) and the resulting mixture was cooled to −78° C. To this reaction mixture, Deoxo-Fluor® (0.6 mL, 3.23 mmol, 5.0 eq) was added dropwise and the reaction mixture was stirred at −78° C. for 1 h. After which time, the reaction mixture was quenched with sat. aq. NaHCO3 (20 mL) and extracted with EtOAc (3×30 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-80% EtOAc in hexanes) to give the title compound (160 mg, 74%). 1H-NMR (400 MHz, CDCl3) δ 8.50 (d, J=1.9 Hz, 1H), 8.23 (s, 1H), 7.49 (q, J=0.9 Hz, 1H), 4.11 (s, 2H), 3.16 (d, J=13.0 Hz, 2H), 2.57 (dd, J=2.9, 1.0 Hz, 3H), 2.12 (ddt, J=16.2, 9.1, 3.7 Hz, 3H), 2.06-1.93 (m, 1H), 1.43 (s, 9H). ES-MS [M+H]+=335.3.
The mixture of (rac)-tert-butyl trans-3-hydroxy-4-(7-methyl[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate and tert-butyl 4-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (200 mg, 0.6 mmol, about 1:1 ratio, 1.0 eq) was dissolved in THF (4 mL), and NaH (60% dispersion in mineral oil, 60 mg, 1.5 mmol, 5.0 eq) was added at 0° C. The resulting reaction mixture was stirred at 0° C. for 30 min. To this reaction mixture, MeI (0.1 mL, 1.5 mmol, 5.0 eq) was added dropwise. The reaction mixture was slowly warmed up to room temperature and stirred for 24 h. The reaction was then quenched with sat. aq. NH4Cl (10 mL) and extracted with CH2Cl2 (3×10 mL). The combined extracts were washed with brine (3 mL), dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution) to give (rac)-tert-butyl trans-3-methoxy-4-(7-methyl[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (68.0 mg, 65%). 1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.20 (s, 1H), 7.47 (t, J=1.0 Hz, 1H), 4.58 (s, 1H), 4.15 (s, 1H), 3.18 (s, 4H), 2.89-2.81 (m, 1H), 2.75 (s, 1H), 2.58-2.47 (m, 1H), 2.44 (d, J=1.0 Hz, 3H), 1.82 (dq, J=13.6, 2.8 Hz, 1H), 1.66-1.53 (m, 1H), 1.45 (s, 9H). ES-MS [M+H]+=347.2 and tert-butyl 4-methoxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-caboxylate (71 mg, 68%). 1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.23 (s, 1H), 7.52-7.47 (m, 1H), 3.99 (s, 2H), 3.16 (s, 2H), 2.96 (s, 3H), 2.64 (d, J=1.0 Hz, 3H), 2.30-2.21 (m, 2H), 1.77 (td, J=13.1, 4.6 Hz, 2H), 1.47 (s, 9H). ES-MS [M+H]+=347.2.
tert-Butyl 4-hydroxypiperdine-1-carboxylate-2,2,6,6-d4 was prepared from J. Label. Compd, Radiopharm. 2018; 61:1036-1042. Step 1. 1-Nitrosopiperidin-4-ol. 1H-NMR (400 MHz, CDCl3) δ 4.43 (ddd, J=12.8, 8.1, 4.2 Hz, 1H), 4.15 (ddd, J=13.4, 7.2, 4.2 Hz, 2H). 3.96 (ddd, J=13.0, 8.1. 4.5 Hz, 1H), 3.79 (ddd, J=13.7, 7.2, 4.7 Hz, 1H), 2.13 (s, 1H), 2.08-2.00 (m, 1H), 1.81 (m, 2H), 1.63-1.54 (m, 1H). ES-MS [M+H]+=131, Step 2. tert-Butyl 4-hydroxypiperidine-1-carboxylate-2,2,6,6-d4. 1H-NMR (400 MHz, DMSO-d6) δ 4.68 (d, J=4.2 Hz, 1H), 3.57-3.64 (m, 1H), 1.65 (dd, J=13.0, 3.8 Hz, 2H), 1.38 (s, 9H), 1.21 (dd, J=13.0, 8.7 Hz, 2H). ES-MS [M+H-tBu]+=150.5.
Step A. tert-Butyl 4-oxopiperidine-1-carboxylate-2,2,6,6-d4. To a solution of tert-butyl 4-hydroxypiperidine-1-carboxylate-2,2,6,6-d4 (800 mg, 3.31 mmol, 1.0 eq) in CH2Cl2 (13 mL) at 0° C. was added Dess-Martin periodinane (1.83 g, 4.31 mmol, 1.3 eq). The reaction mixture was slowly warmed to room temperature. After 2 h, sat. aq. NaHCO3 was added. The reaction mixture was extracted with CH2Cl2 (3×20 mL). The combined extracts were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-80% EtOAc in hexanes) to provide the title compound (670 mg, 99%). 1H-NMR (400 MHz, CDCl3) δ 2.42 (s, 4H), 1.49 (s, 9H). ES-MS [M+H-tBu]+=148.6.
Step B. Bert-Butyl 4-(((trifluoromethyl)sulfonyl)oxy)-3,6-dihydropyridine-1(2H)-carboxylate-2,2,6,6-d4. Under nitrogen atmosphere, to a solution of tert-butyl oxopiperidine-1-carboxylate-2,2,6,6-d4 (390 mg, 1.92 mmol, 1.0 eq.) in THF (5 mL) at −78° C. was added a solution of lithium bis(trimethylsilyl)amide (1M in THF, 2.3 mL, 2.30 mmol, 1.2 eq). After 20 min., a solution of N-phenylbis(trifluoromethanesulfonimide (823 mg, 2.30 mmol, 1.2 eq) in THF (5 mL) was added. The reaction mixture was gradually warmed to 0° C. After 3 h, the reaction mixture was quenched with sat. aq. NaHCO3. The reaction mixture was extracted. with EtOAc (3×10 mL). The combined extracts were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (600 mg, 93%). ES-MS [M+H-tBu]+=280.
Step A, 7-Methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,2,4]triazolo[1,5-a]pyridine. 6-Bromo-7-methyl-1,3-diazaindolizine (2 g, 9.43 mmol, 1.0 eq), bis(pinacolato)diboron (3.6 g, 14.1 mmol, 1.5 eq), KOAc (3.3 g, 33.0 mmol, 3.5 eq) and Pd(dppf)Cl2·DCM (692 mg, 0.94 mmol, 0.10 eq) were charged equally into three reaction vials, which was sealed and placed under an inert atmosphere. 1,4-Dioxane (16 mL) was added to each vial via syringe and the reaction mixture was purged with N2. The resulting mixture was subjected to a microwave reactor at 120° C. After 30 min,, the reaction mixture was filtered through Celite and the Celite was washed thoroughly with EtOAc. The filtrate was concentrated under reduced pressure. The crude residue was purified by column chromatography (0-80% EtOAc in hexanes) to provide the title compound (2411 mg, 98%). ES-MS [M+H-tBu]+=260.2.
Step B. tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate-2,2,6,6-d4. tert-Butyl 4-(((trifluoromethyl)sulfonyl)oxy)-3,6-dihydropyridine-1(2H)-carboxylate-2,2,6,6-d4. (55 mg, 0.16 mmol, 1.0 eq), 7-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,2,4]triazolo[1,5-a]pyridine (64 mg, 0.25 mmol, 1.5 eq) and Na2CO3 (55 mg, 0.49 mmol, 3.0 eq) and Pd(dppf)Cl2·DCM (27 mg, 0.03 mmol, 0.2 eq) were charged into a microwave vial which was sealed and placed under an inert atmosphere. 1,4-Dioxane (2 mL) and H2O (0.5 mL) were added via syringe and the reaction mixture was purged with N2. After 1 h at 100° C. on bench top, the reaction mixture was filtered through a pad of Celite which was rinsed thoroughly with EtOAc/CH2Cl2. The filtrate was concentrated under reduced pressure and purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (37 mg, 52%). 1H-NMR (400 MHz, CDCl3) δ 8.31 (s, 1H), 8.27 (s, 1H), 7.52 (s, 1H, 5.74 (s, 1H), 2.95 (J=1.4 Hz, 3H), 2.36 (s, 2H), 1.51 (s, 9H). ES-MS [M+H]+319.5.
Step C. tert-Butyl 4-(7-methyl-[1,2,4]triazoloil[1,5-a]pyridin-6-yl)piperidine-1-carboxylate-2,2,6,6-d4. The title compound was prepared similar to Intermediate Example 12, Step B. 1H-NMR (400 MHz, CDCl3) δ 8.35 (s, 1H), 8.25 (s, 1H), 7.53 (s, 1H), 2.80-2.87 (m, 1H), 2.48 (d, J=1.4 Hz, 3H), 1.86-1.90 (m, 2H), 1.47-1.54 (under water peak, m, 2H), 1.49 (s, 9H). ES-MS [M+H]+=319.5.
tert-Butyl 4-(((trifluoromethyl)sulfonyl)oxy)-3,6-dihydropyridine-1(2H)-carboxylate-2,2,6,6-d4 (370 mg, 1.10 mmol, 1.0 eq), bis(pinacolato)diboron (364 mg, 1.43 mmol, 1.3 eq), KOAc (325 mg, 3.30 mmol, 3.0 eq) and Pd(dppf)Cl2·DCM (124 mg, 0.17 mmol, 0.15 eq) were charged into a reaction vial, which was sealed and placed under an inert atmosphere. 1,4-Dioxane (5.5 mL) was added via syringe and the reaction mixture was purged with N2. The resulting mixture was stirred at 100° C. After 1 h, the reaction mixture was filtered through Celite and washed thoroughly with EtOAc. The filtrate was concentrated under reduced pressure to provide the crude mixture of title compound, which was used for the next step without further purification. ES-MS [M+H-tBu]+=258.
1,5-Dimethyl-1H-pyrazole-4-sulfonyl chloride (335 mg, 1.72 mmol, 1.2 eq) and 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine (300 mg, 1.43 mmol, 1.0 eq) were added to a vial, followed by N,N-diisopropylethylamine (750 μL, 4.3 mmol, 3.0 eq) and CH2Cl2 (3 mL) The reaction mixture was stirred at room temperature for 30 min., after which time H2O (2 mL) was added. The reaction mixture was passed through a phase separator with CH2Cl2. The combined organics were concentrated under reduced pressure to provide the crude mixture of title compound (526 mg), which was used for the next step without further purification. ES-MS [M+H]+=368.4.
The compounds shown in Table 7 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
Coumaran-5-sulfonyl chloride (300 mg, 1.37 mmol, 1.0 eq) and 1-Boc-piperazine (307 mg, 1.65mmol, 1.2 eq) were dissolved in CH2Cl2 (10 mL). To this reaction mixture, N,N-diisopropylethylamine (1.2 mL, 6.86 mmol, 5.0 eq) was added. The reaction mixture was stirred at room temperature for 1 h, after which time the reaction was quenched with H2O (3 mL) and extracted with CH2Cl2 (3×10 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (488.5 mg, 96%). ESMS [M+Na]+=391.0.
6-Bromo-7-methyl-1,3-diazaindolizine (150 mg, 0.71 mmol 1.0 eq). bis(pinacolato)diboron (270 mg, 1.06 mmol, 1.5 eq), potassium acetate (243 mg, 2.48 mmol, 3.5 eq), and Pd(dppf)Cl2 (52 mg, 0.07 mmol, 0.1 eq) were added to a microwave vial. The reaction mixture was purged with nitrogen. 1,4-Dioxane (3 mL) was then added via syringe. The resulting mixture was heated in a microwave reactor at 120° C. for 1 h, after which time the reaction mixture was cooled to room temperature and filtered through a plug of Celite and washed with CH2Cl2. Combined organics were concentrated and purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (154.2 mg, 84%). 1H-NMR (400 MHz, CDCl3) δ 8.93 (s, 1H), 8.36 (s, 1H), 7.63 (s, 1H), 2.65 (s, 3H), 1.37 (s, 12H). ES-MS [M+H-2,3-dimethylbutyl]+=178.0.
4-(Difluoromethyl)pyridin-2-amine (1000 mg, 6.94 mmol, 1.0 eq) and N-bromosuccinimide (901 mg, 6.97 mmol, 1.0 eq) were dissolved in THF (20 mL) at 0° C. The resulting mixture was stirred overnight, while the reaction temperature was allowed to warm up to room temperature. The reaction mixture was then quenthed with H2O (5 mL) and extracted with CH2Cl2 (3×30 mL). The combined extracts were dried over Na2SO4, filtered and concentrated to dryness. The crude was then purified by column chromatography (0-20% MeOH in CH2Cl2) to give the title compound (1214 mg, 78%). 1H-NMR (400 MHz, CDCl3) δ 8.20 (s, 1H), 6.75 (s, 1H), 6.71 (t, J=54.4 Hz, 1H), 4.71 (s, 2H). ES-MS [M+H]+=223 and 2.2.5.
The compounds shown in Table 8 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, DMSO-d6) δ 7.49 (s, 1H), 6.33 (s, 2H), 2.21 (d, J = 2.4 Hz, 3H). ES-MS [M + H]+ = 205.4 and 207.2.
5-Bromo-4-fluoropyridin-2-amine (700 mg, 3.66 mmol, 1 eq) was added to a vial. The mixture was cooled to 0° C., and then Selectfluor™ (3895 mg, 11.0 mmol, 3 eq) was added in one portion. The mixture was stirred overnight at room temperature, after which time the aqueous layer was extracted with CH2Cl2 (3×5 mL), and the combined organic layers were dried over Na2SO4, filtered, concentrated under reduced pressure, and the crude mixture was purified by column chromatography (0-10% 10% MeOH containing 1% NH4OH in CH2Cl2) to give the title compound (256.1 mg, 20% yield with 60% purity). The compound was used without further purification. ES-MS [M+H]+=209.2.
tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (100 mg, 0.32 mmol, 1.0 eq) was dissolved in THF (1 mL), and Nal (48 mg, 0.32 mmol, 1.0 eq) and TMSCF3 (120 μL, 0.80 mmol, 2.5 eq) were added, and the reaction mixture was heated to 60° C. for 2 h. The reaction mixture was cooled to room temperature and concentrated under reduced pressure. The residue was diluted with sat. aq. NaHCO3 (10 mL) and extracted with CH2Cl2 (3×10 mL). The combined organic extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude residue was purified by column chromatography (0-80% EtOAc in hexanes) to give the title compound (62 mg, 54%). 1H-NMR (400 MHz, CDCl3) δ 7.99 (s, 1H, 7.57 (td, J=60.4, 4.8 Hz, 1H), 7.14-6.98 (m, 1H), 5.63 (s, 1H), 4.05 (q, J=3.0 Hz, 2H), 3.61 (t, J=5.6 Hz, 2H), 2.32 (m, 5H), 1.48 (s, 9H). ES-MS [M+H]+=365.4.
Step A. 6-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazine. Step 1: 6-Chloro-5-methylpyridazin-3-amine (1.44 g, 10 mmol, 1 eq) was dissolved in 2-propanol (20 mL, 0.4 M) and N,N-dimethylformamide dimethyl acetal (1.7 mL, 13.0 mmol, 1.3 eq) was added dropwise. The resulting solution was heated at 82° C. for 3 h to provide the N,N-dimethyl formamidine intermediate (ES-MS [M+H]+199.2). After cooling to 50° C., hydroxylamine hydrochloride (903 mg, 13.0 mmol, 1.3 eq) was added. The reaction mixture was stirred at 50° C. for 2 h and concentrated under reduced pressure to provide the N′-hydroxy-formamidine intermediate (ES-MS [M+H]+=187.2) which was used for the next step without further purification, Step 2: The crude mixture of N′-(6-chloro-5-methylpyridazin-3-yl)-N-hydroxyformimidamide (1.87 g, 10.0 mmol, 1 eq) was suspended in THF (50 mL). The resulting suspension was cooled to 0° C. and tritluoroacetic anhydride (4.2 mL, 30.0 mmol, 3.0 eq) was added dropwise. The reaction mixture was allowed to warm to room temperature and stirred overnight. The precipitate was filtered using a Büchner funnel and washed with cold THF to provide a 1st batch of the title compound as a white solid. The filtrate was concentrated under reduced pressure and purified using column chromatography (50-80% EtOAc in CH2Cl2) to give a 2nd batch of the title compound. Two hatches were combined (1.34 g, 79% over 2 steps). 1H-NMR (400 MHz, DMSO-d6) δ 8.65 (s, 1H), 8.48 (J=1.0 Hz, 1H) 2.49 (J=1.0 Hz, 3H). ES-MS [M+H]+=169.2.
Step B. tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-b]pyridazin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. 6-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazine (506 mg, 3.0 mmol, 1 eq.), N-Boc-3,6-dihydro-2H-pyridine-4-boronic acid pinacol ester (1.21 g, 3.9 mmol, 1.3 eq.), Pd(dppf)Cl2·DCM. (246 mg, 0.3 mmol, 0.1 eq), and Na2CO3 (972 mg, 9.0 mmol, 3 eq) were charged into a microwave vial which was sealed and placed under an inert atmosphere. 1,4-Dioxane (10 mL) and H2O (5 mL) were added via syringe and the reaction mixture was purged with N2 and subjected to microwave radiation at 140° C. After 30 min., the reaction mixture was filtered through a pad of Celite which was rinsed thoroughly with EtOAc/CH2Cl2. The filtrate was concentrated under reduced pressure and purified using column chromatography (0-100% EtOAc in hexanes) to provide the title compound (785 mg. 83%). 1H-NMR (400 MHz, DMSO-d6) δ 8.57 (s, 1H), 8.28 (d, J=1.0 Hz, 1H), 6.11 (s, 1H), 4.05-4.09 (m, 2H), 3.58 (dd, J=5.5, 5.5 Hz, 2H), 2.43-2.50 (m, 5H), 1.45 (s, 9H). ES-MS [M+H]+=316.4.
Step C. tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-b]pyridazin-6-yl)piperidine-1-carboxylate. tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-b]pyridazin-6-yl)-3.6-dihydropyridine-1(2H)-carboxylate (785 mg, 2.50 mmol, 1.0 eq) Pd(OH)2/C (175 mg, 0.25 mmol, 0.1 eq), and aqueous ammonium formate solution (1 g/mL) (2.5 mL, 45.0 mmol, 18 eq) in H2O were added to a vial, which was sealed and placed under a H2 atmosphere. EtOH (10 mL) was added by syringe, and the mixture was heated at 50° C. for 2 h. The resulting mixture was filtered through Celite and washed with MeOH and concentrated under reduced pressure. The residue was then diluted with CH2Cl2 (3 mL) and H2O (1 mL) and extracted with CH2Cl2 (3×5 mL). The combined organics were passed through a phase separator, concentrated under reduced pressure. The crude mixture of title compound was used for the next step without further purification. (790 mg). 1H-NMR (400 MHz, CDCl3) δ 8.41 (s, 1H), 7.91 (s, 1H), 4.42-4.19 (m, 2H), 3.06 (m, 1H), 2.87 (m, 2H), 2.54 (s, 3H), 2.24 (m, 2H), 1.97 (m, 2H), 1.49 (s, 9H). ES-MS [M+H]+=318.4.
Step A. 6-Bromo-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidine. The title compound was prepared similar to Intermediate Example 27. Step A. 1H-NMR (400 MHz, DMSO-d6) δ 9.81 (s, 1H), 8.60 (s, 1H), 3.32 (s, 3H). ES-MS [M+H]+=213.2 and 215.2.
Step B. tert-Butyl 4-(5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate. The title compound was prepared similar to Intermediate Example 27. Step B. ES-MS [M+H]+=316.4.
Step C. tert-Butyl 4-(5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)piperidine-1-carboxylate. The title compound was prepared similar to Intermediate Example 27. Step C. ES-MS [M+H]+=318.4.
The title compound was prepared similar to Intermediate Example 12. ES-MS [M+H]+=320.
The title compound may be prepared similarly to the compound described above, with appropriate starting materials. 1H-NMR (400 MHz, CDCl3) δ 4.23 (s, 2H), 3.89 (t, J=6.0 Hz, 2H), 2.94-2.82 (m, 3H), 2.72 (s, 2H), 2.00-1.79 (m, 6H), 1.68 (d, J=13.1 Hz, 2H), 1.46 (s, 9H). ES-MS [M+H]+=374.
Step A. 6-Chloro-7-methyl-imidazo[1,2-b]pyridazine. To a solution of 6-chloro-3-amino-5-methylpyridazine (500 mg, 3.48 mmol, 1 eq) in 1-butanol (5 m.L) was added an aqueous solution of chloroacetaldehyde (50 wt %, 487 μL, 3.83 mmol, 11 eq) and the mixture was refluxed overnight. After cooling to room temperature, the mixture was adsorbed onto Celite and was purified using column chromatography (0-10% MeOH in CH2Cl2) to afford title compound (487 mg, 83%), ES-MS [M+H]+=168.
Step B. 7-Methyl-6piperazin-1-yl-imidazo[1,2-b]pyridazine 2,2,2-trifluoroacetic acid. A solution of 6-chloro-7-methyl-imidazo[1,2-b]pyridazine (487 mg, 2.9 mmol, 1 eq), 1-Boc-piperazine (811 mg, 4.36 mmol, 1.5 eq), and N,N-diisopropylethylamine (2.53 mL, 14.5 mmol, 5 eq) in NMP (5 mL) was heated to 175° C. for 18 h. The reaction mixture was cooled and diluted with H2O (100 mL) then extracted with EtOAc (3×100 mL). The combined organics were dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified using column chromatography (0-80% EtOAc in CH2Cl2 then 0-10% MeOH in CH2Cl2) to afford tert-butyl 4-(7-methylimidazo[1,2-b]pyridazin-6-yl)piperazine-1-carboxylate (119.9 mg) and 7-methyl-6-piperazin-1-yl-imidazo[1,2-b]pyridazine (72.5 mg). The intermediate was dissolved in CH2Cl2 (1 mL) and trifluoroacetic acid (29 μL, 3.8 mmol, 1.3 eq) was added and the reaction mixture stirred for 18 h. The reaction mixture was concentrated under reduced pressure to afford title compound (198 mg, 21%). ES-MS [M+H]+=218.
Step A. 6-Methyl-2,3-dihydrobenzo[b][1,4]dioxine-2,2,3,3-d4 To a solution of 4-methylbenzene-1,2-diol (1.24 g, 10.0 mmol, 1.0 eq) in acetone (50 mL) was added K2CO3 (4.2 g, 30.0 mmol, 3.0 eq) and 1,2-dibromoethane-d4 (2.59 mL, 30.0 mmol, 3.0 eq). The reaction mixture was stirred at 60° C. for 18 h. The reaction mixture was then diluted with EtOAc (50 mL) and sat. aq. NaHCO3 (20 mL) and the layers were separated. The aqueous layer was extracted with EtOAc (3×50 mL). The combined organic layers were washed, dried with MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified with column chromatography (0-50% EtOAc in hexanes) to give the title compound (820 mg, 53%). 1H-NMR (400 MHz, CDCl3) δ 6.75 (d, J=8.2. Hz, 1H), 6.68 (d, J=1.3 Hz, 1H), 6.63 (dd, J=8.1, 1.2. Hz, 1H), 2.25 (s, 3H).* The desired mass was not detected by LC-MS.
Step B. 6-Bromo-7-methyl-2,3-dihydrobenzo[b][1,4]dioxine-2,2,3,3-d4 To a solution of 6-methyl-2,3-dihydrobenzo[b][1,4]dioxine-2,2,3,3-d4. (154 mg, 1.0 mmol, 1.0 eq) in CH3CN (2 mL) was added N-bromosuccinimide (214 mg. 1.2 mmol, 1.2 eq). The resulting mixture was stirred at room temperature. After 16 h, the mixture was poured into a sat. aq. NaHCO3 (2 mL) and extracted with EtOAc (3×10 mL). The combined extracts were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude residue was purified with column chromatography (0-60% EtOAc in hexanes) to provide the title compound (163 mg, 70%), 1H-NMR (400 MHz, CDCl3) δ 7.04 (s, 1H), 6.74 (s, 1H), 2.27 (s, 3H). ES-MS [M+H]+=232 and 234.
Step C. tert-Butyl 4-(7-methyl-2,3-dihydrobenzo[b][1,4]dioxin-6-yl-2,2,3,3-d4)-3,6-dihydropyridine-1(2H)-carboxylate 6-Bromo-7-methyl-2,3-dihydrobenzo[b][1,4]dioxine-2,2,3,3-d4 (163 mg, 0.7 mmol, 1.0 eq), N-Boc-3,6-dihydro-2H-pyridine-4-boronic acid pinacol ester (259 g, 0.84 mmol, 1.2 eq), Pd(dppf)Cl2·DCM (86 mg, 0.1 mmol, 0.15 eq), and Na2CO3 (227 mg, 2.1 mmol, 3 eq) were charged into a microwave vial which was sealed and placed under N2 atmosphere. 1,4-Dioxane (4.0 mL) and H2O (1.3 mL) were added and the reaction mixture was purged with N2 and stirred at 100° C. After 1 h, the reaction mixture was filtered through a pad of Celite which was rinsed thoroughly with EtOAc and CH2Cl2. The filtrate was concentrated and purified using column chromatography (0-50% EtOAc in hexanes) to provide the title compound (220 mg, 94%). 1H-NMR (400 MHz, DMSO-d6) δ 6.65 (s, 1H), 6.55 (s, 1H), 5.5 (s, 1H), 3.88-3.95 (m, 2H), 3.49 (dd, J=5.5, 5.5 Hz, 2H), 2.19-2.24 (m, 2H), 2.10 (s, 3H), 1.42 (s, 9). ES-MS [M+H-tBu]+=280.
Step D. tert-Butyl 4-(7-methyl-2,3-dihydrobenzo[b][1,4]dioxin-6-yl-2,2,3,3-d4)piperidine-1-carboxylate To a solution of iert-butyl 4-(7-methyl-2,3-dihydrobenzo[b][1,4]dioxin-6-yl-2,2,3,3-d4)-3,6-dihydropyridine-1(2H)-carboxylate (220 mg, 0.7 mmol, 1.0 eq) in EtOH (3.3 mL) under N2 atmosphere was added palladium(II)acetate (74 mg, 0.33 mmol, 0. 5 eq) followed by a slow addition of triethylsilane (0.52 mL, 3.3 mmol, 5.0 eq). An exothermic reaction was observed. The reaction mixture was stirred at room temperature. After 90 min, the mixture was filtered through a pad of Celite and rinsed with MeOH and CH2Cl2. The filtrate was concentrated and purified using column chromatography (0-60% EtOAc in hexanes) to provide the title compound (120 mg, 54%). ES-MS [M+H-tBur]+=282.4.
Step A. tert-Butyl 4-(7-methylquinolin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate The title compound was prepared similar to Intermediate Example 14. Step A. N-Boc-3,6-dihydro-2H-pyridine-4-boronic acid pinacol ester (600 mg, 1.94 mmol, 1.0 eq), 6-bromo-7-methylquinoline (517 mg, 2.33 mmol, 1.2 eq), Pd(dppf)Cl2·DCM (159 mg, 0.19 mmol, 0.1 eq), Na2CO3 (629 mg, 5.82 mmol, 3.0 eq), 1,4-dioxane (9 mL), and H2O (3 mL) were used to give the title compound (586 mg, 93%). 1H-NMR (400 MHz, CDCl3) δ 8.85 (dd, J=4.3, 1.8 Hz, 1H), 8.07 (dd, J=8.7, 2.1 Hz, 1H), 7.89 (s, 1H), 7.52 (s, 1H), 7.32 (dd, J=8.2, 4.3 Hz, 1H), 5.67 (s, 1H), 4.08 (d, J=1.7 Hz, 2H), 3.67 (t, J=5.6 Hz, 2H), 2.48 (s, 3H), 2.42 (s, 2H), 1.52 (s, 9H). ES-MS [M+H]+=325.
Step B. tert-Butyl 4-(7-methyl-1,2,3,4-tetrahydroquinolin-6-yl)piperldine-1-carboxylate The title compound was prepared similar to Intermediate Example 16. Step B. tert-Butyl 4-(7-methylquinolin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate (586 mg, 1.81 mmol, 1.0 eq), 20% wt Pd(OH)2/C (127 mg, 0.18 mmol, 0.1 eq), and 50% vv/w solution of ammonium formate in H2O (2.1 mL, 33 mmol, 18.3 eq) were used. The reaction mixture was heated at 70° C. in a microwave vial for 2 h to give the title compound (587 mg, 98%). 1H-NMR (400 MHz, CDCl3) δ 6.79 (s, 1H), 6.33 (s, 1H), 4.29 (m, 2H), 3.53 (m, 1H), 3.28 (t, J=5.5 Hz, 2H), 2.86-2.71 (m, 5H), 2.26 (s, 3H), 2.01-1.91 (m, 2H), 1.75 (m, 2H), 1.62 (td, J=12.6, 4.2 Hz, 2H), 1.55 (s, 9H). ES-MS [M+H-tBu]+=275.
Step C. tert-Butyl 4-(7-methylquinolin-6-yl)piperidine-1-carboxylate 2,2,2-trifluoroacetate To a solution of tert-butyl 4-(7-methyl-1,2,3,4-tetrahydroquinolin-6-yl)piperidine-1-carboxylate (597.2 mg, 1.81 mmol, 1.0 eq) in CH3CN (20 mL), di-tert-butyl azodicarboxylate (1040 mg, 4.52 mmol, 2.5 eq) was added, and the reaction mixture was stirred at room temperature for overnight. After which time, the reaction solvents were filtered through Celite and concentrated under reduced pressure. The crude residue was diluted with CH2Cl2 (30 mL) and H2O (10 mL), and extracted with CH2Cl2 (3×30 mL). The combined extracts were dried over Na2SO4, filtered and concentrated to dryness. The crude material was purified by column chromatography (0-100% EtOAc in hexanes). The isolated product was further purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution). The desired fractions were concentrated to dryness in vacuo to give the title compound as a TFA salt (454.6 mg, 57%). ES-MS [M+H]+=327.
Step A. tert-Butyl 4-(2-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1.(2H)-carboxylate and tert-butyl 4-(6-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate To a flask with tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate (2.7 g, 8.7 mmol, 1.0 eq), 2,6-dibromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridine (3.3 g, 10.6 mmol, 1.2 eq), Na2CO3 (2.81 g, 26.0 mmol, 3.0 eq) and Pd(dppf)Cl2 (320 mg, 0.44 mmol, 0.05 eq) were added 1,4-dioxane (150 mL) and H2O (50 mL). The reaction mixture was purged with N2 and stirred at 80° C. overnight. After which time, the reaction mixture was concentrated under reduced pressure. The residue was diluted with H2O (30 mL) and extracted with CH2Cl2 (3×300 mL). The combined organic phase was washed with brine (30 mL), dried over Na2SO4 and filtered. The filtrates were concentrated under reduced pressure and purified by column chromatography (0-100% EtOAc in hexanes) to give a 2:1 mixture of products tert-butyl 4-(2-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate and byproduct tert-butyl 4-(6-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate (1.43 g, ˜2:1 ratio by 1H-NMR analysis).
tert-Butyl 4(2-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate: 1H-NMR (400 MHz, CDCl3) δ 8.33 (d, J=0.7 Hz, 1H), 7.71 (d, J=0.7 Hz, 1H), 5.83 (s, 1H), 4.10 (q, J=2.9 Hz, 2H), 3.66 (t, J=5.5 Hz, 2H), 2.45 (s, 2H), 1.50 (s, 9H). ES-MS [M+H]+=415.
tert-Butyl 4(6-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate: 1H-NMR (400 MHz, CDCl3) δ 8.77 (s, 1H), 7.82 (s, 1H), 5.83 (s, 1H), 6.98 (s, 1H)4.16 (d, J=3.1 Hz, 2H), 3.72 (t, J=6.2 Hz, 2H), 2.71 (s, 2H), 1.49 (s, 9H). ES-MS [M+H]+=415.
Step B. tert-Butyl 4-(7-chloro4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl-2-d)-3,6-dihydropyridine-1(2H)-carboxylate To a microwave vial was added a mixture of tert-butyl 4-(2-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-1(2H)-carboxylate and tert-butyl 4-(6-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate (693 mg, 1.68 mmol, about 2:1 ratio by 1H-NMR, 1.0 eq), D2O (164 μL, 10.1 intnol, 6.0 eq), acetic acid-D4 (360 μL, 6.7 mmol, 4.0 eq), Zinc (219 mg, 3.35 mmol, 2.0 eq) and dry CH3CN (15 mL). The reaction vial was sealed and heated to 110° C. for 30 min under microwave irradiation. Upon completion, the reaction mixture was passed through a plug of silica gel, washed with CH2Cl2, and concentrated under reduced pressure. The crude residue was then purified by reverse phase HPLC (5-95% CH3CN in 0.1% NH4OH aqueous solution) to give the title compound (67.5 mg, 12%). 1H-NMR (400 MHz, CDCl3) δ 8.39 (d, J=0.7 Hz, 1H), 7.75 (d, J=0.7 Hz, 1H), 5.79 (s, 1H), 4.06 (q, J=2.9 Hz, 2H), 3.62 (t, J=5.6 Hz, 2H), 2.45-2.39 (m, 2H), 1.46 (s, 9H). ES-MS [M+H]+=336.4. * 93% deuterium incorporation ratio was determined by 1H-NMR analysis.
Step C. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl-2-d)piperidine-1-carboxylate To a solution of tert-butyl 4-(7-chloro-2-deuterio-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (120.2 mg, 0.36 mmol, 1.0 eq) in THF (3 mL) was added BH3·DMS (1.2 mL, 2.38 mmol, 6.0 eq) at 0° C. The reaction was slowly warmed up to room temperature. After 48 h, the reaction mixture was quenched with 3M aq. NaOH (2 mL) and heated to 50° C. for 1 h. The reaction mixture was concentrated under reduced pressure and extracted with CH2Cl2 (3×10 mL). The combined organic phase was washed with brine (10 mL), dried over Na2SO4, and concentrated under reduced pressure. The residue was then purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (15.8 mg, 13%). ES-MS [M+H]+=338.6.
To a solution of tert-butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (20 mg, 0.06 mmol, 1.0 eq) in THF (1.0 mL) was added sodium deuteroxide solution, 40 wt. % in D2O (0.1 mL, 0.98 mmol, 16.5 eq) and D2O (0.5 mL). The reaction was heated to 65° C. for 3 days. The reaction mixture was concentrated and extracted with CH2Cl2 (3×5 mL). The combined organic phase was washed with brine (5 mL), dried over Na2SO4, and concentrated under reduced pressure. The crude residue was purified by column chromatography (0-100% EtOAc in hexanes) to give the title compound (13.6 mg, 67%). * Note: C5 [80% D] and C8 [93% D] deuterium incorporation ratio was determined by 1H-NMR analysis. 1H-NMR (400 MHz, CDCl3) δ 8.30 (s, 1H), 4.30 (s, 2H), 3.11 (tt, J=12.1, 3.2 Hz, 1H), 2.87 (t, J=12.8 Hz, 2H), 2.00 (dt, J=13.0, 2.7 Hz, 2H), 1.55 (qd, J=12.8, 4.5 Hz, 2H), 1.48 (s, 9H). ES-MS [M+H]+=339.3.
To a solution of tert-butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (200 mg, 0.6 mmol, 1 eq) in THF (3 mL) were added sodium deuteroxide solution, 40 wt. % in D2O (0.6 mL, 5.9 mmol, 10 eq), D2O (6 mL) and CD3OD (0.6 mL). The reaction was then heated to 140° C. under microwave for 5 h. The reaction mixture was concentrated and extracted with CH2Cl2 (3×10 mL). The combined organic extracts were washed with brine (5 mL), dried over Na2SO4, concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-50% EtOAc in hexanes) to give the title compound (143.6 mg, 71%). * Note: C2 [>98% D]. C5 [>99% D], C8 [>99% D], D incorporation ratio determined by 1H-NMR analysis. 1H-NMR. (400 MHz, CDCl3) δ 4.29 (s, 2H), 3.15-3.04 (m, 1H), 2.90-2.79 (m, 2H), 2.07 (s, 2H), 2.03-1.94 (m, 2H), 1.54 (tt, J=12.5, 6.3 Hz, 9H). ES-MS [M+H]+=340.4.
Step A. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridine-12H)-carboxylate-2,2,6,6-d4 To a solution of 6-bromo-7-chloro-[1,2,4]triazolo[1,5-a]pyridine (1 g, 4.3 mmol, 1 eq) and tert-butyl2,2,6,6-tetradeuterio-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3H-pyridine-1-carboxylate (1.62 g, 5.2 mmol, 1.2 eq) in 1,4-dioxane (12 mL) and H2O (4 mL) were added K4PO4 (2.74 g, 12.9 mmol, 3 eq) and Pd(dppf)Cl2 (314.8 mg, 430 umol, 0.1 eq). The reaction mixture was de-gassed 3 times and then heated to 80° C. for 16 h under N2. After which time, the reaction mixture was quenched with H2O (10 mL), then extracted with EtOAc (2×25 mL). The combined organic layers were washed with brine (10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a residue. The residue was purified by column chromatography (SiO2, Petroleum ether/EtOAc=0/1) to give the title compound (1.29 g, 88%). 1H-NMR (400 MHz, CDCl3) δ 8.43 (s, 1H), 8.33 (s, 1H), 7.81 (s, 1H), 5.83 (s, 1H), 2.46 (s, 2H), 151 (s, 9H).
Step B. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate-2,2,6,6-d4 To a solution of tert-butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-2,2,6,6-tetradeuterio-3H-pyridine-1-carboxylate (1.29 g, 3.8 mmol, 1 eq) in THF (38 mL) was added BH3-Me2S (10 M, 2.3 mL, 6 eq) in THF (8 mL) at 0° C. and the mixture was stirred at room temperature for 16 h. Then to the above solution was added another BH3-Me2S (10 M, 2.3 mL, 6 eq) in THF (8 mL) at 0° C. The mixture was stirred at room temperature for another 16 h. To above solution was added aq. NaOH (3 M, 38.1 mL, 30 eq) at 0° C., and the mixture was stirred at 60° C. for 3 h. The reaction mixture was quenched by H2O (10 mL) at 0° C., and extracted with EtOAc (3×10 mL). The combined organic layers were washed with brine (1×10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a residue. The residue was purified by column chromatography (SiO2, Petroleum ether/EtOAc=1/1) to give the title compound (350 mg, 27%). 1H-NMR (400 MHz, CDCl3) δ 8.42 (s, 1H), 8.31 (s, 1H), 7.83 (s, 1H), 3.17-3.06 (m, 1H), 2.00 (d, J=12.9 Hz, 4H), 1.49 (s, 9H).
Step A. Ethyl acetimidate-2,2,2-d3 hydrochloride To a solution of 2,2,2-trideuterioacetonitrile (11.9 mL, 243.6 mmol, 1.0 eq) in EtOH (34.1 mL, 584.6 mmol, 2.4 eq) was added acetyl chloride (20.9 mL, 292.3 mmol, 1.2 eq) dropwise at 0° C. over 30 min. The resulting mixture was stirred at 0° C. for 12 h. The reaction mixture was concentrated under reduced pressure to remove EtOH and CD3CN. The crude product was triturated with MTBE at 0° C. for 2 h to give the title compound (18.3 g, 59%, HCl). 1H-NMR (400 MHz, CDCl3) δ 12.61-11.05 (m, 2H), 4.57 (q, J=7.1 Hz, 2H), 1.42 (t, J=7.1 Hz, 3H).
Step B. Methyl 2-(methyl-d3)-4,5- dihydrooxazole-4-carboxylate To a solution of methyl 2-amino-3-hydroxy-propanoate (26 g, 167.1 mmol, 1 eq, HCl) and ethyl 2,2,2-trideuterioethanimidate (18.1 g, 200.5 mmol, 1.2 eq, HCl) in CH2Cl2 (400 mL) was added TEA (46.5 mL, 334.2 mmol, 2 eq) dropwise at 0° C. over 30 min. The resulting mixture was stirred at 20° C. for 12 h. The reaction solution was filtered and the filter cake was washed with MTBE (3×50 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give the title compound (13.2 g, 54%). 1H-NMR (400 MHz, CDCl3) δ 4.65 (dd, J=8.1, 10.4 Hz, 1H), 4.45-4.37 (m, 1H), 4.37-4.29 (m,1H), 3.71 (d, J=0.6 Hz, 3H).
Step C. Methyl 2-(methyl-d3)oxazole-4-carboxylate To a solution of methyl 2-methyl-4,5-dihydrooxazole-4-carboxylate (20 g, 139.7 mmol, 1 eq) and bromo(trichloro)methane (16 mL, 162.1 mmol. 1.16 eq) in CH2Cl2 (200 mL) was added DBU (26.5 mL, 176.1 mmol, 1.26 eq) drop wise at 0° C. over 30 min. The resulting mixture was stirred at 20° C. for 31i. After which time, the reaction mixture was quenched with H2O (100 mL) at 0° C. and extracted with CH2Cl2 (3×100 mL). The combined organic layers were washed with 1M aq. HCl solution 2×100 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give the title compound (14.53 g, 73%). 1H-NMR (400 MHz, CDCl3) δ 8.13 (s, 1H, 3.90 (s, 3H).
Step D. 2-(Methyl-d3)oxazole-4-carboxylic acid To a solution of methyl 2-(trideuteriomethyl)oxazole-4-carboxylate (6 g, 41.6 mmol, 1 eq) in THF (70 mL) was added NaOH (2 g, 50 mmol, 1.2 eq) solution in H2O (20 mL) at 0° C. The reaction mixture was stirred for 30 min at 0° C. and stirred at room temperature for additional 2 h. The reaction mixture was then concentrated under reduced pressure. The residue was diluted with H2O (60 mL) and acidified with 3 M aq. HCl (30 mL). The precipitate was filtered, washed with H2O (2×75 mL) and dried on air to give the title compound (2.5 g, 46%). 1H-NMR (400 MHz, DMSO-d6) δ 8.59 (s, 1H).
Step E. 2(Methyl-d2)oxazole To a mixture of 2-(trideuteriomethyl)oxazole-4-carboxylic acid (10 g, 78.68 mmol, 1 eq) in quinolin-2(1H)-one (50 g. 344.45 mmol, 4.38 eq) was added CuO (1.25 g, 15.74 mmol, 0.2 eq). The reaction was stirred at 205° C. under N2 for 3 h. After which time, the crude product was distilled at 220° C. under normal pressure to give the title compound (4 g, 61%) as a yellow oil. 1H-NMR (400 MHz, CDCl3) δ 7.49-7.55 (m, 1H), 6.97 (s, 1H), 2.40-2.45 (m, 1H).
Step F. 5-Bromo-2-(methyl-d2)oxazole To a solution of 2-(trideuteriomethyl)oxazole (1.5 g, 17.4 mmol, 1 eq) in THF (10 mL) at −78° C. was added n-BuLi (2.5 M, 16 mL, 2.3 eq). The reaction mixture was stirred 30 min under N2. 1,2-Dibromo-1,1,2,2-tetrafluoro-ethane (4.17 mL, 34.8 mmol, 2 eq) was then added dropwise at −78° C. for 30 min. The reaction mixture was then slowly warmed to room temperature and stirred for 16 h. After which time, the reaction mixture was quenched by H2O (50 mL) and extracted with CH2Cl2 (2×50 mL). The combined organic layers were washed with brine (10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a crude residue of the title compound (1.2 g, 41%). The residue was used for next step without further purification. 1H-NMR. (400 MHz, CDCl3) δ 6.87 (s, 1H), 2.39-2.44 (m, 1H).
Step G. 5-(Benzylthio)-2-(methyl-d2)oxazole To a solution of 5-bromo-2-(trideuteriomethyl)oxazole (1 g, 6.1 mmol, 1 eq), phenylmethanethiol (781 uL, 6.7 mmol, 1.1 eq), Xantphos (351 mg, 606. umol, 0.1 eq), and N,N-diisopropylethylamine (2.11 mL, 12.1 mmol, 2 eq) in 1,4-dioxane (4 mL) at room temperature was added Pd2(dba)3 (277.5 mg, 303 umol, 0.05 eq) in one portion under N2. The reaction mixture was stirred at 110° C., for 16 h. After which time, the residue was poured into H2O (100 mL). The aqueous phase was extracted with CH2Cl2(3×100 mL). The combined organic phase was dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by column chromatography (SiO2, Petroleum ether/EtOAc=5/1 to 3/1) to give the title compound (1 g, 79%), 1H-NMR (400 MHz, CDCl3) δ 7.15-7.37 (m, 5H), 6.83 (s, 1H), 3.93 (s, 2H), 2.39-2.44 (m, 1H).
Step H. 2-(Methyl-d2)oxazole-5-sulfonyl chloride 5-Benzylsulfanyl-2-(trideuteriomethyl)oxazole (0.2 g, 960.2 umol, 1 eq) was dissolved in AcOH (0.4 mL) and H2O (0.1 mL). The reaction mixture was stirred at 0° C. for 30 min. NCS (384.6 mg, 2.9 mmol, 3 eq) was then added by three portions at 0° C. The mixture was then stirred at 0° C. for 30 min. After which time, the mixture was warmed to room temperature and stirred for 2 h. The reaction mixture was then then heated to 45° C. and stirred for additional 5 min.. The residue was then poured into H2O (10 mL). The aqueous phase was extracted with CH2Cl2 (3×5 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to give a crude mixture of the title compound (177 mg, 99%). This was used for next step without further purification.
c. Commercial StartingMaterials
d. Preparation of Representative Compounds
Step A. 7-Fluoro-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride, tert-Butyl 4-(7-fluoro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (437 mg, 1.36 mmol, 1.0 eq) was dissolved in 1,4-dioxane (10 mL) and MeOH (2 mL), and 4M HCl in 1,4-dioxane (5 mL, 20.4 mmol, 15 eq) was added dropwise. The resulting mixture was stirred at room temperature for 4 h, after which time solvents were concentrated under reduced pressure. The resulting solid was used for the next step without further purification (346 mg, 99%). ES-MS [M+H]+=221.
Step B. 6-(1((5-Chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-7-fluoro-[1,2,4]triazolo[1,5-a]pyridine. 5-Chloro-1-methylpyrazole-4-sulfonyl chloride (10 mg, 0.05mmol, 1.0 eq) and 7-fluoro-6-(4-piperidyl)-[1,2,4]triazolo[1,5-a]pyridine;hydrochloride (14.3 mg, 0.06 mmol, 1.2 eq) were dissolved in CH2Cl2 (0.5 mL), To this reaction mixture, N,N-diisopropylethylamine (24 μL, 0.14 mmol, 3.0 eq) was added and stirred at room temperature for 1 h, after which time the reaction mixture was quenched with H2O (0.5 mL) and extracted with CH2Cl2 (3×2 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated to dryness. The crude residue was then purified by column chromatography (0-20% MeOH in CH2Cl2) to give the title compound (14.5 mg, 78%). 1H-NMR (400 MHz, CDCl3) δ 8.40 (d, J=6.4 Hz, 1H), 8.30 (s, 1H), 7.80 (s, 1H), 7.38 (d, J=9.8 Hz, 1H), 4.03 (d, J=11.6 Hz, 2H), 3.93 (s, 3H), 2.86 (t, J=11.9 Hz, 1H), 2.60 (t, J=11.9 Hz, 2H), 2.07 (d, J=12.6 Hz, 2H), 1.95-1.77 (m, 2H). ES-MS [M+H]+=399.
Step A. 8-Fluoro-7-methyl-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (HCl salt). The title compound was prepared similar to Example 1. Step A. 1H-NMR (400 MHz, DMSO-d6) δ 9.18 (bs, 1H), 8.94 (bs, 1H), 8.57 (s, 1H), 8.49 (s, 1H), 3.36 (d, J=12.5 Hz, 2H), 3.03-3.18 (m, 3H), 2.38 (d, J=3.0 Hz, 3H), 1.86-2.00 (m, 4H). ES-MS [M+H]+=235.4.
Step B. 6-(1-((5-(Difluoromethyl)-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-8-fluoro-7-methyl-[1,2,4]triazolo[1,5-a]pyridine. The title compound was prepared similar to Example 1. Step B. 1H-NMR. (400 MHz, CDCl3) δ 8.29 (s, 1H), 8.25 (s, 1H), 7.74 (s, 1H), 7.28 (t, J=52.3 Hz, 1H), 4.14 (s, 3H), 3.96 (dd, J=9.6, 1.9 Hz, 2H), 2.61-2.72 (m, 1H), 2.42-2.50 (m, 2H), 2.34 (d, J=2.9 Hz, 3H), 2.03 (dd, J=13.3, 3.3 Hz, 2H), 1.79-1.90 (m, 2H), ES-MS [M+H]+=429.3.
Step A. 7-Chloro-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (343 mg, 1.02 mmol, 1 eq) was added to a vial. 4 N HCl in 1,4-dioxane (8 mL, 32 mmol, 32 eq) was added via syringe. The mixture was stirred at room temperature for 1 h, after which time the mixture was concentrated to dryness to provide the title compound, which was directly used without further purification (278 mg, 99%). ES-MS [M+H]+=237.4.
Step B. 5-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-2-methylthiazole. 2-Methylthiazole-5-sulfonyl chloride (35 mg, 0.18 mmol, 1.2 eq) and 7-chloro-6-(4-piperidyl)[1,2,4]triazolo[1,5-a]pyridine hydrochloride (40 mg, 0.15 mmol, 1 eq) were added to a vial. CH2Cl2 (1 ml) and N,N-diisopropylethylamine (80 μL, 0.44 mmol, 3 eq) were added, and the resulting mixture was stirred at room temperature for 30 min., after which time H2O (1 mL) was added to quench the reaction. The reaction mixture was passed through a phase separator. The combined organic layer was concentrated under reduced pressure. The crude residue was purified by column chromatography (0-10% MeOH in CH2Cl2) to provide the title compound (47.6 mg, 81%). 1H-NMR (400 MHz, CDCl3) δ 8.46 (s, 1H), 8.35 (s, 1H), 8.07 (s, 1H), 7.84(s, 1H), 4.05 (dt, J=11.6. 2.3 Hz, 2H), 3.00 (tt, J=12.3, 3.3 Hz, 1H), 2.83 (s, 3H), 2.61 (td, J=12.1, 2.4 Hz, 2H), 2.17 (dt, J=12.8, 2.6 Hz, 2H). 1.86 (qd, J=12.5, 4.0 Hz, 2H). ES-MS [M+H]+=398.0.
Step A. 8-1Fluoro-7-methyl-6-(piperidin-4-yl-2,2,6,6-d4)-[1,2,4]triazolo[1,5-a]pyridine 2,2,2-trifluoroacetate. tert-Butyl 4-(8-fluoro-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate-2,2,6,6-d4 (42 mg, 0.12 mmol, 1.0 eq) was added to a vial. CH2Cl2 (2 mL) and trifluoroacetic acid (190 μL, 2.49 mmol, 20.0 eq) were added via syringe. The mixture was stirred at room temperature for 1 h, at which point the mixture was concentrated under reduced pressure to provide the crude mixture of title compound (43.7 mg), which was used for the next step without further purification. ES-MS [M+H]+=239.0.
Step B. 6-(1((5-(Difluoromethyl)-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl-2,2,6,6-d4)-8-fluoro-7-methyl-[1,2,4]triazolo[1,5-a]pyridine. 8-Fluoro-7-methyl-6-(piperidin-4-yl-2,2,6,6-d4)-[1,2,4]triazolo[1,5-a]pyridine 2,2,2-trifluoroacetate (20 mg, 0.057 mmol. 1.0 eq) was added to a vial. DMF (1 mL) and N,N-diisopropylethylamine (59 μL, 0.34 mmol, 6.0 eq) were added via syringe, followed by 5-(difluoromethyl)-1-methylpyrazole-4-sulfonyl chloride (16 mg, 0.07 mmol, 1.2 eq). The reaction mixture was stirred at room temperature for 1 h, after which time the reaction mixture was directly purified by reverse phase HPLC (10-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound (9.3 mg, 37%), 1H-NMR (400 MHz, CDCl3) δ 8.29 (s, 1H), 8.25 (s, 1H), 7.74 (t, J=0.8 Hz, 1H), 7.28 (t, J=52.3 Hz, 1H), 4.14 (t, J=1.0 Hz, 3H), 2.69 (tt, J=12.2, 3.3 Hz, 1H), 2.34 (d, J=2.9 Hz, 3H), 2.02 (ddd, J=13.6, 2.8, 1.2 Hz, 2H), 1.84 (t, J=12.7 Hz, 2H). ES-MS [M+H]+=433.4.
Step A. 7-Methyl-6-(1,2,3,6-tetrahydropyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride. tert-Butyl 4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (109 mg, 0.35 mmol, 1.0 eq) was dissolved in 1,4-dioxane (2.5 mL) and MeOH (0.2 mL). To this reaction mixture, 4.0 M HCl in dioxane (1.3 mL, 5.18 mmol, 15.0 eq) was added. The resulting mixture was stirred at room temperature for 4 h, after which time solvents were concentrated under reduced pressure. The resulting solid was used for the next step without further purification (86 mg). ES-MS [M+H]+=215.0.
Step B. 7-Methyl-6-(1-((3-methyl-2,3-dihydrobenzofuran-5-yl)sulfonyl)-1,2,3,6-tetrahydropyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine. 3-Methyl-2,3-dihydrobenzofuran-5-sulfonyl chloride (10 mg, 0.04mmol, 1.0 eq) and 7-methyl-6-(1,2,3,6-tetrahydropyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (13 mg, 0.05 mmol, 1.2 eq) were dissolved in CH2Cl2 (0.6 mL). To this reaction mixture, N,N-diisopropylethylamine (23 μL, 0.13 mmol, 3.0 eq) was added and stirred at room temperature for 1 h, after which time the reaction mixture was quenched with H2O (0.5 mL) and extracted with CH2Cl2 (3×2 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated to dryness. The crude residue was then purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution over 5 min.) to give the title compound (6.2 mg, 35%). 1H-NMR (400 MHz, CDCl3) δ 8.31 (s, 1H), 8.25 (s, 1H), 7.64 (dd, J=8.4, 1.9 Hz, 1H), 7.61 (d, J=9.3 Hz, 2H), 6.90 (d, J=8.3 Hz, 1H), 5.73 (dt, J=3.2, 1.7 Hz, 1H), 4.82 (t, J=9.1 Hz, 1H), 4.22 (dd, J=8.9, 7.5 Hz, 1H), 3.78 (d, J=2.8 Hz, 2H), 3.63 (h, J=7.0 Hz, 1H), 3.34 (t, J=5.6 Hz, 2H), 2.48 (dq, J=5.4, 2.9 Hz, 2H), 2.36 (s, 3H), 1.39 (d, J=6.9 Hz, 3H). ES-MS [M+H]+=411.
Step A. 2-(Difluoromethyl)-7-methyl-6-(1,2,3,6-tetrahydropyridin-4yl)-[1,2,4]triazolo[1,5-a]pyridine. tert-Butyl 4-[2-(difluoromethyl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-3,6-dihydro-2H-pyridine-1-carboxylate (60 mg, 0.16 mmol, 1.0 eq) was dissolved in CH2Cl2 (0.4 mL), and TFA (0.1 mL, 3.23 mmol, 19.6 eq) was added dropwise. The resulting mixture was stirred at room temperature for 3 h, after which time solvents were concentrated under reduced pressure. The resulting solid was used for the next step without further purification (30 mg, 69%). ES-MS [M+H]+=265.2.
Step B. 5-((4-(2-(Difluoromethyl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-3,6-dihydropyridin-1(2H)-yl)sulfonyl)-2-methylthiazole. 2-Methylthiazole-5-sulfonyl chloride (7.5 mg, 0.04 mmol, 1.0 eq) and 2-(difluoromethyl)-7-methyl-6-(1,2,3,6-tetrahydropyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine (10 mg, 0.04 mmol. 1.0 eq) were added to a vial. CH2Cl2 (1 mL) and Et3N (0.1 mL, 0.72 mmol, 19 eq) were added, and the resulting mixture was stirred at room temperature for 30 min., after which time H2O (2 mL) was added to quench the reaction. The reaction mixture was extracted with CH2Cl2 (2×5 mL) and the extracts were passed through a phase separator. The combined organic layer was concentrated under reduced pressure. The crude residue was purified by column chromatography (0-20% MeOH in CH2Cl2) to provide the title compound (6.5 mg, 40%). 1H-NMR (400 MHz, CDCl3) δ 8.06 (s, 1H), 7.95 (s, 1H, 7.58 (t, J=60.4 Hz, 1H), 7.07 (t, J=0.8 Hz, 1H), 5.65 (t, J=1.7 Hz, 1H), 3.85 (q, J=2.8 Hz, 2H), 3.49 (s, 2H), 3.39 (t, J=5.6 Hz, 2H), 2.80 (s, 3H), 2.47 (ddt, J=3.9, 2.9, 1.1 Hz, 2H), 2.30 (d, J=0.7 Hz, 3H). ES-MS [M+H]+=426.0.
Step A. (rac)-trans-4-(7-Methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)pipericlin-3-ol hydrochloride. (rac)-tert-Butyl trans-3-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (27 mg, 0.08 mmol, 1.0 eq) was dissolved in 1,4-dioxane (0.2 mL), and 4.0 M HCl in 1,4-dioxane (1.0 mL, 4.0 mmol, 50.0 eq) was added dropwise. The resulting mixture was stirred at room temperature for 4 h, after which time solvents were concentrated under reduced pressure. The resulting solid was used for the next step without further purification (18 mg), ES-MS [M+H]+=233.3
Step B. (rac)-trans-1-((5-Chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-3-ol. (rac)-trans-4-(7-Methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-3-ol hydrochloride (8 mg, 0.03 mmol, 1.0 eq) and 5-chloro-1-methylpyrazole-4-sulfonyl chloride (7.4 mg, 0.03 mmol, 1.0 eq) were added to a vial. CH2Cl2 (1 mL) and Et3N (29 μL, 0.21 mmol, 6.0 eq) were added, and the resulting mixture was stirred at room temperature for 30 min., after which time H2O (1 mL) was added to quench the reaction. The reaction mixture was extracted with CH2Cl2 (3×5 mL). The reaction mixture was passed through a phase separator. The combined organic layer was concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC (15-95% CH3CN in 0.1% TFA aqueous solution) to provide the title compound (6.9 mg, 49%). 1H-NMR. (400 MHz, CDCl3) δ 8.35 (s, 1H), 8.17 (d, J=1.0 Hz, 1H), 7.82. (s, 1H), 7.35 (s, 1H), 4.18 (ddd, J=11.3, 4.8, 1.9 Hz, 1H), 4.04-3.94 (m, 2H), 3.94 (s, 3H), 3.44 (s, 1H), 2.76 (ddd, J=12.4, 10.1, 3.9 Hz, 1H), 2.61-2.50 (m, 1H), 2.50-2.42 (m, 4H), 2.02-1.93 (m, 1H), 1.93-1.82 (m, 1H). ES-MS [M+H]+=411.0.
Step A. 4-(7-Methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-4-ol hydrochloride, tert-Butyl 4-hydroxy-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (30 mg, 0.09 mmol, 1.0 eq) and 4 M HCl in 1,4-dioxane (1 mL, 4.0 mmol, 44.0 eq) were added to a vial. The resulting mixture was stirred at room temperature for 4 h, after which time solvents were concentrated under reduced pressure. The resulting solid was used for the next step without further purification (19 mg). ES-MS [M+H]+=233.3.
Step B. 1-((1,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-4-ol. 1,5-Dimethylpyrazole-4-sulfonyl chloride (7.5 mg, 0.04 mmol, 1.0 eq) and 4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-4-ol hydrochloride (9 mg, 0.04 mmol, 1.0 eq) were added to a vial. CH2Cl2 (1 mL) and Et3N (0.1 mL, 0.72 mmol, 18.5 eq) were added, and the resulting mixture was stirred at room temperature for 30 min., after which time H2O (2 mL) was added to quench the reaction. The reaction mixture was extracted with CH2Cl2 (3×5 mL). The reaction mixture was passed through a phase separator. The combined organic layer was concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC (15-95% CH3CN in 0.1% TFA aqueous solution) to provide the title compound (9.4 mg, 62%). 1H-NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.23-8.18 (m, 1H), 7.66 (s, 1H), 7.40 (s, 1H), 3.84 (s, 3H), 3.71 (dd, J=9.8, 4.0 Hz, 2H), 2.86 (td, J=11.9, 2.4 Hz, 2H), 2.67 (s, 3H.), 2.26 (td, J=13.1, 4.5 Hz, 2H), 2.06 (dd, J=14.0, 2.5 Hz, 2H). ES-MS [M+H]+=391.2.
Step A. (rac)-6-(trans-3-Fluoropiperidin-4-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridine hydrochloride. (rac)-tert-Butyl trans-3-fluoro-4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (25 mg, 0.07 mmol, 1.0 eq) and 4.0 M HCl in dioxane (1 mL, 4.0 mmol, 53.5 eq) were added to a vial. The resulting mixture was stirred at room temperature for 4 h, after which time solvents were concentrated under reduced pressure. The resulting solid was used for the next step without further purification (17 mg). ES-MS [M+H]+=235.2.
Step B. (rac)-6-(trans-1-((1,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)-3-fluoropiperidin4-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridine. 1,5-Dimethylpyrazole-4-sulfonyl chloride (6 mg, 0.03 mmol, 1.0 eq) and rac)-6-[trans-3-fluoro-4-piperidyl]-7-methyl-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (7 mg, 0.03 mmol, 1.0 eq) were added to a vial. CH2Cl2 (1 mL) and Et3N (0.1 mL, 0.72 mmol, 24 eq) were added, and the resulting mixture was stirred at room temperature for 30 min., after which time H2O (2 mL) was added to quench the reaction. The reaction mixture was extracted with CH2Cl2 (3×5 mL). The reaction mixture was passed through a phase separator. The combined organic layer was concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC (15-95% CH3CN in 0.1% TFA aqueous solution) to provide the title compound (6.5 mg, 55%). 1H NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 8.28 (s, 1H), 7.72 (s, 1H), 7.57-7.52 (m, 1H), 4.74 (dtd, J=47.8, 10.1, 5.0 Hz, 1H), 4.23 (dddd, J=10.6, 5.1, 3.4. 1.9 Hz, 1H), 3.91 (dq, J=9.6, 2.1 Hz, 1H), 3.87 (s, 3H), 2.99-2.88 (m, 1H), 2.53 (s, 3H), 2.49-2.44 (m, 2H), 2.43-2.41 (m, 3H), 2.0-2.06 (m, 1H), 1.98-1.89 (m, 1H). ES-MS [M+H]+=393.4.
6-[1-[(3,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl]-4-piperidyl]-7-methyl-[1,2,4]triazolo[1,5-a]pyridine (12 mg, 0.03 mmol, 1 eq) (This was prepared similar to Intermediate Example 12 and Example 1. 1H-NMR (400 MHz, CDCl3) δ 9.78 (br s, 1H), 8.37 (s, 1H), 8.26 (s, 1H), 7.53 (s, 1H), 4.02-3.92 (m, 2H), 2.71 (tt, J=12.2, 3.1 Hz, 1H), 2.61 (td, J=12.0, 2.1 Hz, 2H), 2.50 (s, 6H), 2.44 (s, 3H), 2.01 (m, 2H), 1.81 (qd, J=12.7, 3.8 Hz, 2H). ES-MS [M+H]+=375) and iodomethane-d3 μL, 0.05 mmol, 1.5 eq) were dissolved in DMF (0.5 mL) and NaH (1.7 mg, 0.04 mmol, 1.3 eq) was added at 0° C. The resulting solution was stirred at 0° C. for 1 h, after which time the reaction mixture was quenched with 0.1 mL of H2O and stirred for 10 min. at 0° C. The reaction mixture was extracted with CH2Cl2 (3×2 mL). The combined extracts were dried over Na2SO4, filtered and concentrated to dryness. The crude residue was then purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution over 5 min.) to give the title compound (10.4 mg, 82%). 1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.32 (s, 1H), 7.65 (s, 1H), 3.95 (d, J=11.7 Hz, 2H), 2.72 (tt, J=12.1, 3.1 Hz, 1H), 2.56 (td, J=12.0, 2.2 Hz, 2H), 2.49 (s, 3H), 2.45 (s, 3H), 2.42 (s, 3H), 2.00 (d, J=13.1 Hz, 2H), 1.81 (qd, J=12.7, 3.8 Hz, 2H). ES-MS [M+H]+=392.
Step A. 1-((2,3-Dihydrobenzofuran-5-yl)sulfonyl)piperazine hydrochloride. tert-Butyl 4-(2,3-dihydrobenzofuran-5-ylsulfonyl)piperazine-1-carboxylate (489 mg, 1.33 mmol, 1 eq) was dissolved in 1,4-dioxane (15 mL) and MeOH (2 mL). To this reaction mixture, 4M HCl in 1,4-dioxane (5 mL, 19.9 mmol, 15 eq) was added dropwise. The resulting mixture was stirred at room temperature for 1 h, after which time the reaction solvents were evaporated under reduced pressure. The crude residue was purified by column chromatography (0-20% MeOH in CH2Cl2) to provide the title compound (402 mg, 99%). ES-MS [M+H]+=269.
Step B. 6-(4-((2,3-Dihydrobenzofuran-5-yl)sulfonyl)piperazin-1-yl)-7-methylimidazo[1,2-b]pyridazine. 1-(2,3-Dihydrobenzofuran-5-ylsulfonyl)piperazine hydrochloride (44 mg, 0.14 mmol, 1.2 eq) and 6-chloro-7-methyl-1,5-diazaindolizine (20 mg, 0.12 mmol, 1.0 eq) were added to a vial, followed by NMP (0.5 mL) and N,N-diisopropylethylamine (120 μL, 0.72 mmol, 6.0 eq). The reaction mixture was stirred at 175° C. for overnight, after which time the reaction mixture was filtered and purified by reverse phase HPLC (10-95% CH3CN in 0.1% TFA aqueous solution over 5 min.) to give the title compound (7.4 mg, 15%), 1H-NMR (400 MHz, CDCl3) δ 7.71 (s, 1H), 7,64-7.55 (m, 4H), 6.90 (d, J=8.3 Hz, 1H), 4.70 (t, J=8.8 Hz, 2H), 3.30 (t, J=8.8 Hz, 2H), 3.28-3.15 (m, 8H), 2.27 (d, J=0.8 Hz, 3H). ES-MS [M+H]+=400.0.
Step A. tert-Butyl (R)-3-methoxy(methyl)carbamoyl)pyrrolidine-1-carboxylate. (R)-1-N-Boc-beta-proline (500 mg, 2.32 mmol, 1 eq) was added to a vial. DMF (8 mL) and N,N-diisopropylethylamine (1.2 mL, 6.97 mmol, 3 eq) were added via syringe, and the mixture cooled to 0° C. HATU (1330 mg, 3.48 mmol, 1.5 eq) was added in one portion, and the mixture was stirred for 15 min., at which point N,O-dimethylhydroxylamine hydrochloride (340 mg, 3.48 mmol, 1.5 eq) was added in one portion. The mixture was allowed to stir for 1 h at room temperature, after which time H2O (10 mL) was added. The reaction mixture was passed through a phase separator with CH2Cl2 (10 mL), and the organic layer was concentrated under reduced pressure to provide the crude mixture of title compound (600 mg), which was used without further purification. ES-MS [M+H-tBu]+=203.4.
Step B. (R)-N-Methoxy-N-methylpyrrolidine-3-carboxarnide hydrochloride. tert-Butyl (3R)-3-[methoxy(methyl)carbamoyl]pyrrolidine-1-carboxylate (600 mg, 2.32 mmol, 1 eq) was added to a vial. A 4 N solution of HCl in 1,4-dioxane (6 mL, 24.0 mmol, 10 eq) was added via syringe. The mixture was stirred at room temperature for 1 h, at which point the reaction was concentrated under reduced pressure to provide the crude mixture of title compound (452.0 mg), which was used without further purification. ES-MS [M+H]+=159.4.
Step C. (R)-1-(2,3-Dihydrobenzofuran-5-yl)sulfonyl)-N-methoxy-N-methylpyrrolidine-3-carboxamide. (3R)-N-Methoxy-N-methyl-pyrrolidine-3-carboxamide hydrochloride (452.0 mg, 2.32 mmol, 1 eq) and coumaran-5-sulfonyl chloride (609.0 mg, 2.78 mmol, 1.2. eq) were added to a vial. CH2Cl2 (6.6 mL) and N,N-diisopropylethylamine (1.2 mL, 6.96 mmol, 3.0 eq) were added via syringe. The mixture was stirred at room temperature for 1 at which point the mixture was adsorbed onto Celite and purified by column chromatography (0-80% EtOAc in hexanes) to give the title compound (365 mg, 46% over 3 steps). ES-MS [M+H]+=341.3.
Step D. (R)-1-((2,3-Dihydrobenzofuran-5-yl)sulfonyl)pyrrolidine-3-carbaldehyde. LiAlH4 (11 mg, 0.29 mmol, 1.0 eq) was added to a vial, and the reaction placed under an inert atmosphere. The mixture was cooled to 0° C., and THF (1 mL) was added via syringe. The mixture was stirred at 0° C. for 15 min., at which point (3R)-1-(2,3-dihydrobenzofuran-5-ylsulfonyl)-N-methoxy-N-methyl-pyrrolidine-3-carboxamide (100 mg, 0.29 mmol, 1 eq) was added in one portion, and the reaction mixture was stirred at room temperature for 2.5 h, after which point a sat. aq. solution of Rochelle's salt (1 mL) was added to quench the reaction. The aqueous layer was extracted with EtOAc (3×2 mL), and the combined organics were dried over Na2SO4 and concentrated under reduced pressure to provide the title compound (76 mg, 92%). ES-MS [M+H]+=282.2.
Step E. (S)-1((2,3-Dihydrobenzofuran-5-yl)sulfonyl)-3-ethynylpyrrolidine. (3R)-1-(2,3-Dihydrobenzofuran-5-ylsulfonyl)pyrrolidine-3-carbaldehyde (35 mg, 0.12 mmol, 1.0 eq) and K2CO3 (34 mg, 0.25 mmol, 2.0 eq) were added to a vial and placed under an inert atmosphere. MeOH (1.2 mL) was added via syringe, followed by a dropwise addition of dimethyl (1-diazo-2-oxopropyl)phosphonate (20 μL, 0.15 mmol, 1.2 eq). The reaction mixture was stirred at room temperature. After 1 h, the reaction was adsorbed onto Celite and purified by column chromatography (0-100% EtOAc in hexanes) to provide the title product (6.5 mg. 19%). ES-MS [M+H]+=278.4.
Step F. (R)-5-(4-(1-(2,3-Dihydrobenzofuran-5-yl)sulfonyl)pyrrolidin-3-yl)-1H-1,2,3-triazol-1-yl)benzo[d]thiazole. (3S)-1-(2,3-Dihydrobenzofuran-5-ylsulfonyl)-3-ethynyl-pyrrolidine (18 mg, 0.06 mmol, 1.2 eq), 5-azido-1,3-benzothiazole (9 mg, 0.05 mmol, 1 eq). copper(II) sulfate (1 mg, 0.0052 mmol, 0.1 eq), 1,4-diazabicyclo[2.2.2]octane (0.6 mg, 0.0052 mmol, 0.1 eq) and sodium ascorbate (1 mg, 0.0052 mmol, 0.1 eq) were added to a vial. H2O (0.5 mL), and acetic acid (3.0 μL, 0.0052 mmol, 0.1 eq) were added. The reaction was stirred at room temperature overnight after which point the reaction mixture was passed through a phase separator with CHCl3:iPA solution (3:1), and the organic layer was concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC (15-65% CH3CN in water containing 0.1% TFA. over 5 min.) to provide the title compound (3.3 mg, 14%). ES-MS [M+H]+=454.3.
Step A, 7-(1-((1,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)-1,2,3,6-tetrahydropyridin-4-yl)-6-methyl-[1,2,4]triazolo[1,5-a]pyridine. 7-Bromo-6-methyl-[1,2,4]triazolo[1,5-a]pyridine (50 mg, 0.24 mmol, 1.0 eq), 1-(1,5-dimethylpyrazol-4-yl)sulfonyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine (95 mg, 0.26 mmol, 1.1 eq), Na2CO3 (51 mg, 0.47 mmol, 3.0 eq), and Pd(dppf)Cl2 (8 mg, 0.01 mmol, 0.05 eq) were added to a microwave vial and placed under inert atmosphere. 1,4-Dioxane (1.2 mL) and H2O (1.2 mL) were added via syringe, and the reaction mixture was purged with N2. The reaction mixture was then heated in a microwave reactor at 140° C. for 15 min., after which point the reaction mixture was filtered through a plug of Celite and washed with MeOH. The combined organics were concentrated under reduced pressure. The resulting residue was diluted with H2O (2 mL) and CH2Cl2 (2 mL) and extracted with CH2Cl2 (3×2 mL). The combined organics were passed through a phase separator and concentrated under reduced pressure. The residue was purified by column chromatography (0-10% 10% MeOH with 0.1% NH4OH in CH2Cl2) to give the title compound (68.3 mg, 77%). 1H-NMR (CDCl3) δ 8.38-8.37 (m. 1H), 8.28 (s, 1H), 7.72 (s, 1H), 7.44 (s, 1H), 5.71 (dt, J =3.4, 1,8 Hz, 1H), 3.85 (s, 3H), 3.77 (q, J=2.9 Hz, 2H), 3.33 (t, J=5.6 Hz, 2H), 2.54 (s, 3H), 2.50 (ddt, J=5,5, 4.4, 2.2 Hz, 2H), 2.29 (d, J=1.1 Hz, 3H). ES-MS [M+H]+=373.4.
Step B. 7-(1((1,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-6-methyl-[1,2,4]triazolo[1,5-a]pyridine. 7-[1-(1,5-Dimethylpyrazol-4-yl)sulfonyl-3,6-dihydro-2H-pyridin-4-yl]-6-methyl-[1,2,4]triazolo[1,5-a]pyridine (57 mg, 0.15 mmol, 1.0 eq) and palladium(II) acetate (3.5 mg, 0.02 mmol, 0.2 eq) were added to a microwave vial and placed under a H2 atmosphere. EtOH (1 mL) and triethylsilane (120 μL, 0.76 mmol, 5.0 eq) were added. The mixture was stirred at room temperature for 5 min., and then at 70° C. overnight, after which point the reaction was cooled to room temperature and filtered through a plug of Celite with MeOH. The mixture was concentrated under reduced pressure, and purified by reverse phase HPLC (5-95% CH3CN in water with 0.1% NE4OH) to provide the title compound (8.6 mg, 15%). 1H-NMR (400 MHz, CDCl3) d 8.39 (s, 1H), 8.31 (s, 1H), 7.71 (s, 1H), 7.62 (s, 1H), 3.95 (dt, J=12.6, 3.3 Hz, 2H), 3.86 (s, 3H), 2.69 (tt, J=11.6, 3.7 Hz, 1H), 2.52 (s, 3H), 2.47 (td, J=11.8, 2.9 Hz, 2H), 2.36 (d, J=1.0 Hz, 3H), 1.96-1.91 (m, 2H), 1.86 (ddd, J=13.3, 11.7, 3.9 Hz, 2H). ES-MS [M+H]+=375.5.
Step A. 4-(1((2,3-Dihydrobenzofuran-5-yl)sulfonyl)-1,2,3,6-tetrahydropyridin-4-yl)-5-methylthiazole-2-carboxamide. 4-Bromo-5-methylthiazole-2-carbonitrile (50 mg, 0.25 mmol, 1.0 eq), 1-(2,3-dihydrobenzofuran-5-ylsulfonyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine (116 mg, 0.30 mmol, 1.2 eq), Na2CO3 (53 mg, 0.49 mmol, 2.0 eq), and Pd(dppf)Cl2 (16 mg, 0.02 mmol, 0.1 eq) were added to a microwave vial and place under an inert atmosphere. 1,4-Dioxane (1.2 mL) and H2O (1.2 mL) were added via syringe, and the mixture was purged with N2. The reaction mixture was heated in a microwave reactor at 140° C. for 15 min., after which time the reaction mixture was filtered through Celite with MeOH. The combined organics were concentrated under reduced pressure. The residue was diluted with H2O (1 mL) and CHCl3:iPA solution (3:1) (3 mL). The aqueous phase was extracted with CHCl3:IPA solution (3:1) (3×3 mL). The combined organics were dried over Na2SO4, concentrated under reduced pressure, and purified by column chromatography (0-10% 10% MeOH with 0.1% NH4OH in CH2Cl2) to give the title compound (95.3 mg. 78% yield with 82% purity). An aliquot was then further purified by reverse phase HPLC (5-95% CH3CN in water with 0.1% NH4OH) to provide the title compound (1.2 mg). 1H-NMR (400 MHz, CDCl3) δ 7.65 (s, 1H), 7.64-7.61 (m, 1H), 7.01 (bs, 1H), 6.88 (d, J=8.4 Hz, 1H), 5.87 (dt, J=3.7, 2.2 Hz, 1H), 5.46 (s, 1H), 4.69 (t, 8.8 Hz, 2H), 3.78 (d, J=3.1 Hz, 2H), 3.33-3.26 (m, 4H), 2.67 (d, J=9.2 Hz, 2H), 2.51 (s, 3H). ES-MS [M+H]+=406.2.
Step B. 4-(1-((2,3-Dihydrobenzofuran-5-yl)sulfonyl)piperidin-4-yl)-5-methylthiazole-2-carboxamide. 4-[1-(2,3-Dihydrobenzofuran-5-ylsulfonyl)-3,6-dihydro-2H-pyridin-4-yl]-5-methyl-thiazole-2-carboxamide (80 mg, 0.2 mmol, 1 eq), ammonium formate (622 mg, 9.86 mmol, 50 eq), and Pd(OH)2/C (3 mg, 0.020 mmol, 0.1 eq) were added to a microwave vial. EtOH (2 mL) was added via syringe. The vial was sealed and heated at 70° C. overnight, and after whith time the reaction mixture was filtered through Celite with MeOH, and concentrated under reduced pressure. The mixture was purified by reverse phase HPLC (20-65% CH3CN in water with 0.1% TFA over 12 min.) to provide the title compound (1.2 mg. 1.5%). 1H-NMR (400 MHz, CDCl3)δ 7.62 (d, J=1.7 Hz, 1H), 7.59 (dd, J=8.6, 1.9 Hz, 1H), 7.00 (bs, 1H), 6.89 (d, J=8.3 Hz, 1H), 4.70 (t, J=8.8 Hz, 2H), 3.89 (d, J=11.7 Hz, 2H), 3.30 (t, J=8.8 Hz, 2H), 2.63 (tt, J=11.7, 3.8 Hz, 1H), 2.42 (dd, J=12.0, 2.4 Hz, 2H), 2.38 (s, 3H), 2.07 (qd, J=12.4, 4.1 Hz, 2H), 1.78 (d, J=13.6 Hz, 2H). ES-MS [M+Na]+=430.3.
Step C. 4-(1-((2,3-Dihydrobenzofuran-5-yl)sulfonyl)piperidin-4-yl)-5-methylthiazole-2-carbonitrile. 4-[1-(2,3-Dihydrobenzofuran-5-ylsulfonyl)-4-piperidyl]-5-methyl-thiazole-2-carboxamide (9 mg, 0.02 mmol, 1 eq) and triphenylphosphine oxide (0.1 mg, 0.0002 mmol, 0.01 eq) were dissolved in CH3CN (0.5 mL). To this reaction mixture, Et3N (10 μL, 0.07 mmol, 3 eq) was added, followed by oxalyl chloride (4 μL, 0.04 mmol, 2 eq). The reaction mixture was stirred at room temperature for 10 min., after which time sat, aq. NaHCO3 (1 mL) was added, and the reaction mixture was concentrated under reduced pressure. The residue was diluted with H2O (1 mL) and CHCl3:iPA solution (3:1) (2 mL), and passed through a phase separator with CHCl3:iPA solution (3:1) (3×2 mL). The combined organics were concentrated under reduced pressure. The residue was purified by reverse phase HPLC (5-95% CH3CN in water with 0.1% NH4OH) to provide the title compound (1.6 mg, 18%). 1H-NMR (400 MHz, CDCl3) δ 7.62 (d, J=1.7 Hz, 1H), 7.59 (dd, J=8.4, 2.0 Hz, 1H), 6.88 (d, J=8.4 Hz, 1H), 4.70 (t, J=8.8 Hz, 2H), 3.87 (d, J=11.8 Hz, 2H), 3.30 (t, J=8.8 Hz, 2H), 2.69 (tt, J=11.6, 3.8 Hz, 1H), 2.45 (td, J=12.0, 2.6 Hz, 2H), 2.43 (s, 3H), 2.04 (qd, J=12.0, 4.1 Hz, 2H), 1.78 (d, J=11.9 Hz, 2H). ES-MS [M+H]+=390.3.
4-[1-(1,5-Dimethylpyrazol-4-yl)sulfonyl-3,6-dihydro-2H-pyridin-4-yl]-5-methyl-thiazole-2-carboxamide (6 mg, 0.02 mmol, 1 eq) and palladium(II) acetate (0.4 mg, 0.002 mmol, 0.1 eq) were added to a vial and placed under a H2 atmosphere. EtOH (1 mL) and triethylsilane (30 μL, 0.16 mmol, 10 eq) were added via syringe. The reaction mixture was stirred at room temperature for 5 min., after which time the reaction mixture was heated at 70° C. overnight. The resulting mixture was filtered through a plug of Celite with MeOH, and the organics were concentrated under reduced pressure. The residue was purified by column chromatography (0-10% 10% MeOH with 0.1% NH4OH in CH2Cl2) to provide the title compound (3.2 mg, 53%). 1H-NMR (400 MHz, CDCl3) δ 7.70 (s, 1H), 7.12 (bs, 1H), 3.88 (d, J=13.3 Hz, 2H), 3.85 (s, 3H), 2.68 (tt, J=11.6, 3.8 Hz, 1H), 2.52 (s, 3H), 2.46 (td, J=12.1, 2.7 Hz, 2H), 2.41 (s, 3H), 2.13-2.03 (m, 2H), 1.83—-1.79 (m, 2H). ES-MS [M+H]+=384.3.
Step A. N-Benzyl-6-chloro-5-(trifluoromethyl)pyridazin-3-amine. 3,6-Dichloro-4-(trifluoromethyl)pyridazine (200 mg, 0.92 mmol, 1.0 eq) was added to a vial. DMF (5 mL), benzylamine (100 μL, 0.92 mmol, 1.0 eq) and N,N-diisopropylethylamine (482 μL, 2.77 mmol, 3.0 eq) were added via syringe. The mixture was heated to 90° C. for 3 h, after which time the reaction mixture was filtered through a plug of Celite and combined organics were concentrated under reduced pressure. The mixture was adsorbed onto Celite and purified by column chromatography (0-10% EtOAc in hexanes to remove the side product, then 10-100% EtOAc in hexanes) to provide the title compound (79.7 mg, 30%) and the side product (52.8 mg, 20%). 1H-NMR (400 MHz, CDCl3) δ 7.35 (d, J=4.7 Hz, 3H), 7.33-7.28 (m, 2H), 7.12 (s, 1H), 6.08 (t, J=5.7 Hz, 1H), 4.66 (d, J=5.7 Hz, 2H). ES-MS [M+H]+=288.4.
Step B. tert-Butyl 4-(6-(benzylamino)-4-(trifluoromethyl)pyridazin-3-yl)piperidine-1-carboxylate. N-Benzyl-6-chloro-5-(trifluoromethyl)pyridazin-3-amine (50 mg, 0.17 mmol, 1.0 eq), tert-butyl 4-(1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (65 mg, 0.21 mmol, 1.2 eq), Pd(dppf)Cl2·DCM (14 mg, 0.017 mmol, 0.1 eq), and Na2CO3 (56 mg, 0.52 mmol, 3.0 eq) were added to a microwave vial and placed under and inert atmosphere. 1,4-Dioxane (0.5 mL) and H2O (0.5 mL) were added via syringe, and the mixture was purged with N2. The mixture was heated in a microwave reactor at 140° C. for 15 min., after which time the reaction mixture was diluted with H2O and the aqueous layer was extracted with CH2Cl2. The combined organic extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude residue was purified by column chromatography (10-100% EtOAc in hexanes) to give the title compound (68 mg, 90%). ES-MS [M+H]+=435.4.
Step C. tert-Butyl 4-(6-(benzylamino)-4-(trifluoromethyl)pyridazin-3-yl)piperidine-1-carboxylate. tert-Butyl 4-[6-(benzylamino)-4-(trifluoromethyl)pyridazin-3-yl]-3,6-dihydro-2H-pyridine-1-carboxylate (68 mg, 0.16 mmol, 1.0 eq) and 10% Pd/C (17 mg, 0.16 mmol, 1.0 eq) were added to a vial. MeOH (2 mL) was added via syringe, placed under a H2 atmosphere, and the reaction mixture was stirred for 24 h at room temperature, after which time the reaction mixture was re-charged with H2 and stirred for 24 h at room temperature. After which point H2O (2 mL) was added and the mixture was filtered through Celite. The aqueous layer was extracted with CH2Cl2 (3×2 mL), and the combined organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude residue was then purified by column chromatography (0-100% EtOAc in hexanes to 0-10% MeOH in CH2Cl2) to provide the title compound (21.2 mg, 31%). ES-MS [M+H]+=437.2.
Step D. A-Benzyl-6-(piperidin-4-yl)-5-(trifluoromethyl)pyridazin-3-amine. tert-Butyl 4-[6-(benzylamino)-4-(trifluoromethyl)pyridazin-3-yl]piperidine-1-carboxylate (21 mg, 0.049 mmol, 1.0 eq) was added to a vial. TFA (1 mL) was added via syringe, and the reaction mixture was heated at 90° C. for 1 h, at which point sat. aq. NaHCO3 (5 mL) was added via syringe, and the aqueous layer was extracted with CHCl3:iPA solution (3:1) (3×5 mL). The combined organics were dried over Na2SO4 and concentrated under reduced pressure to provide the title compound (14.2 mg, 87%).
Step E. N-Benzyl-6-(piperidin-4-yl)-5-(trifluoromethyl)pyridazin-3-amine. N-Benzyl-6-(4-piperidyl)-5-(trifluoromethyl)pyridazin-3-amine (14 mg, 0.042 mmol, 1.0 eq), and coumaran-5-sulfonyl chloride (24 mg, 0.11 mmol, 2.5 eq) were added to a vial, followed by N,N-diisopropylethylamine (40 μL, 0.22 mmol, 5.0 eq) and CH2Cl2 (2 mL). The reaction mixture was stirred at room temperature for 1 h, at which point H2O (2 mL) was added. The reaction mixture was extracted with CH2Cl2 (3×2 mL), dried over Na2SO4, and concentrated under reduced pressure. The crude residue was purified by column chromatography (0-10% MeOH in CH2Cl2) to provide the title compound (11.2 mg, 51%). ES-MS [M+H]+=519.3.
Step A. 5-Methyl-6-(piperidin-4-yl)nicotinonitrile hydrochloride. The title compound was prepared similar to Example 1. Step A. ES-MS [M+H]+=202.
Step B. 6-(1-((1,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-5-methylnicotinonitrile. The title compound was prepared similar to Example 3. Step B. 1H-NMR (400 MHz, CDCl3) δ 8.65 (d, J=1.9 Hz, 1H), 7.69 (s, 1H), 7.66 (d, J=1.4 Hz, 1H), 3.89 (d, J=11.5 Hz, 2H), 3.85 (s, 3H), 2.84 (tt, J=11.6, 3.5 Hz, 1H), 2.51 (s, 3H), 2.46 (td, J=12.1, 2.3 Hz, 2H), 2.34 (s, 3H), 2.08 (qd, J=12.9, 12.4, 4.0 Hz, 2H), 1.79 (d, J=12.5 Hz, 2H). ES-MS [M+H]+=360.
Step A. 5-Methyl-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyrimidine. The title compound was prepared similar to Example 1. Step A. ES-MS [M+H]+=218.2.
Step B. 6-(14(1,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidine. The title compound was prepared similar to Example 3. Step B. 1H-NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.41 (s, 1H), 7.70 (s, 1H), 3.98 (dp, J=11.5, 1.9 Hz, 2H), 3.86 (s, 3H), 2.68 (s, 4H), 2.53 (s, 3H), 2.47 (td, J=12.0, 2.4 Hz, 2H), 2.04 (dt, J=13.2, 2.6 Hz, 2H), 1.92-1.77 (m, 2H). ES-MS [M+H]+=376.4.
To a solution of N,N-diisopropylethylamine (30 μL, 0.14 mmol, 3 eq) in CH2Cl2 (0.5 mL) was added 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-sulfonyl chloride (11 mg, 0.06 mmol, 1 eq) followed by 1,5-dimethylpyrazole-4-sulfonyl chloride (11 mg, 0.06 mmol, 1.2 eq). The mixture was stirred at ambient temperature for 1 h, after which time sat. aq. NaHCO3 (0.5 mL) was added and the reaction mixture was extracted with CH2Cl2 (3×3 mL). The combined organics were passed through a phase separator and concentrated under reduced pressure. The residue was purified by reverse phase HPLC (5-45% CH3CN in water with 0.1% NH4OH) to provide the title compound (4.2 mg, 24%). 1H-NMR (400 MHz, CDCl3) δ 7.72 (d, J=1.6 Hz, 2H), 7.62 7.60 (m, 1H), 7.58 (d, J=1.3 Hz, 1H), 3.86 (s, 3H), 3.32-3.25 (m, 4H), 3.24-3.17 (m, 4H), 2.53 (s, 3H), 2.30 (d, J=1.1 Hz, 3H). ES-MS [M+H]+=376.
Step A. 2-methyl-3-(piperidin-4-yl)-5,6,7,8-tetrahydroimidazo[1,2-a] pyridine. The title compound was prepared similar to Example 1. Step A. 1H-NMR (400 MHz, MeOD) δ 4.07 (t, J=6.0 Hz, 2H), 3.51 (d, J=12.8 Hz. 2H), 3.15 (tdd, J=12.4, 8.0, 4.3 Hz, 3H), 2.95 (t, J=6.4 Hz, 2H), 2.34 (s, 3H), 2.10 (pd, J=11.1, 10.1, 6.4 Hz, 6H), 1.97 (ddt, J=8.5, 6.1, 2.5 Hz, 2H). ES-MS [M+H]+=320.
Step B. 3-(1-((5-Chloro-1-methyl-1H-pyrazo(-4-yl)sulfonyl)piperidin-4-yl)-2-methyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyridine. The title compound was prepared similar to Example 3. Step B. 1H-NMR (400 MHz, CDCl3) δ 7.78 (s, 1H), 4.01-3.92 (m, 2H), 3.91 (s, 3H), 3.73 (t, J=5.9 Hz, 2H), 2.80 (t, J=6.4 Hz, 2H), 2.56-2.41 (m, 3H), 2.17 (s, 3H), 2.01(m, 2H), 1.97-1.91 (m, 2H), 1.88-1.75 (m, 4H). ES-MS [M+H]+=398.
Analytical Separation Example:
Chiral SFC separation was performed on a Thar (Waters) Investigator. Column: Phenomenex Lux Cellulose-4, 4.6×250 mm, 5 μm. Gradient conditions: 40% isocratic MeOH (MeOH modified with 0.1% DEA) in CO2 for 10 minutes. Flow rate: 3.5 ml/min. Column temperature: 40° C. System backpressure: 100 bar. Trans-diastereomer 1: trans-diastereomer 2 (1:1)
Preparative Separation Example:
Chiral SFC separation was performed on a PIC Solution SFC-PICLab PREP 100, Column: Phenomenex Lux-Cellulose 4, 21.2×250 mm, 5 μm. Conditions: 40% isocratic MeOH in CO2. Flow rate: 80 mL/min. Column temperature: 40° C. System backpressure: 100 bar.
Trans-diastereomer 1 (compound 459) (first eluted peak):
Rt=3.84 min (analytical method); ES-MS [M+H]+=425; purity >99%.
Trans-diastereomer 1 (compound 460) (second eluted peak):
Rt=8.14 min (analytical method; ES-MS [M+H]+=425; purity >99%.
Step A, 2-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-5-methyl-1,3,4-thiadiazole (Compound 540) To a solution of 5-methyl-1,3,4-thiadiazole-2-sulfonyl fluoride (8 mg, 0.04 mmol, 1.0 eq) and 7-chloro-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (13.2 mg, 0.05 mmol, 1.1 eq) in CH2Cl2 (0.5 mL), N,N-diisopropylethylamine (23 μL, 0.13 mmol, 3.0 eq) was added and stirred 5 min. at room temperature. To this reaction mixture, DMF (0.50 mL) and 4-dimethylaminopyridine (5.4 mg, 0.04 mmol, 1.0 eq) were added and stirred at room temperature for additional 5 min, 1,8-Diazabicyclo[5.4.0]undec-7-ene (20 μL, 0.13 mmol, 3.0 eq) was then added and stirred at room temperature overnight After which time, the reaction mixture was quenched with sat. aq. NaHCO3 (1 mL) and extracted with CH2Cl2 (3×5 mL). The combined extracts were dried over Na2SO4, filtered and concentrated to dryness. The crude was then purified by reverse phase HPLC (12-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound (2.6 mg, 15%). 1H-NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.33 (s, 1H), 7.83 (s, 1H), 4.24-4.12 (m, 2H), 3.19 (tt, J=12.5, 2.3 Hz, 2H), 3.11 (td, J=12.2, 3.1 Hz, 1H), 2.89 (s, 3H), 2.20-2.12 (m, 2H), 1.85 (qd, J=12.7, 4.1 Hz, 2H). ES-MS [M+H]+=399.
Step A. 1-Methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazole-5-carbonitrile (Compound 400) The title compound was prepared similar to Example 3. Step B. 5-Cyano-1-methyl-1H-pyrazole-4-sulfonyl chloride (10 mg, 0.05 mmol, 1.0 eq), 7-methyl-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (14.8 mg, 0.06 mmol, 1.2 eq), N,N-diisopropylethylamine (25 μL 0.15 mmol, 3.0 eq), CH2Cl2 (0.5 mL) were used to give the title compound (5.4 mg, 28%). 1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.27 (s, 1H), 7.85 (s, 1H), 7.54 (t, J=1.0 Hz, 1H), 4.16 (s, 3H), 4.08 (dp, J=11.7, 1.9 Hz, 2H), 2.72 (tt, J=12.2, 3.3 Hz, 1H), 2.60 (td, J=12.1, 2.4 Hz, 2H), 2.43 (d, J=1.0 Hz, 3H), 2.04 (dt, J=13.1, 2.5 Hz, 2H), 1.92-1.80 (m, 2H). ES-MS [M+H]+=386.
Step B. (1-Methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yl)methanamine The title compound was prepared similar to Intermediate Example 14. Step B. 1-Methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazole-5-carbonitrile (100 mg, 0.26 mmol, 1.0 eq), 20% wt Pd(OH)2/C (18.2 mg), aqueous ammonium formate solution (1 g/mL) (1 mL, 10 mmol, 38.5 eq), and EtOH (2 mL) were used to give the title compound (45.5 mg, 45%). 1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H, 8.25 (s, 1H, 7.71 (s, 1H), 7.52 (s, 1H), 4.10 (m, 2H), 3.99 (s, 3H), 3.96 (m, 2H), 2.67 (tt, J=12.1, 3.1 Hz, 1H), 2.49 (td, J=12.0, 2.4 Hz, 2H), 2.41 (s, 3H), 2.00 (m, 2H), 1.98 (br s, 2H), 1.84 (qd, J=12.7, 3.9 Hz, 2H). ES-MS [M+H]+=390.
Step C. N-((1-Methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yl0methyl)picolinamide To a solution of picolinic acid (2 μL, 0.02 mmol, 1 eq) and HATU (12 mg, 0.03 mmol, 2 eq) in DMF (0.5 mL) was added (1-methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yL)methanamine (6 mg, 0.02 mmol, 1 eq) and N,N-diisopropylethylamine (8 μL, 0.05 mmol, 3 eq). The reaction mixture was stirred at room temperature for 2 h, quenched with MeOH (0.1 mL), filtered, and purified by reverse phase HPLC (12-95% CH3CN in 0.1% TFA. aqueous solution) to give the title compound (5 mg, 65%). 1HNMR (400 MHz, CDCl3) δ 8.74 (t, J=6.5 Hz, 1H), 8.54 (ddd, J=4.8, 1.7, 0.9 Hz, 1H), 8.34 (s, 1H), 8.26 (s, 1H), 8.15 (dt, J=7.8, 1.1 Hz, 1H), 7.85 (td, J=7.7, 1.7 Hz, 1H), 7.72 (s, 1H), 7.51 (s, 1H), 7.43 (ddd, J=7.6, 4.8, 1.2 Hz, 1H), 4.88 (d, J=6.6 Hz, 2H), 4.17 (s, 3H), 4.07-3.99 (m. 2H), 2.68-2.55 (m, 1H), 2.48 (td, J=11.7, 2.8 Hz, 2H), 2.37 (d, J=1.0 Hz, 3H), 1.95-1.87 (m, 2H), 1.81 (td, J=12.6, 3.9 Hz, 2H). ES-MS [M+H]+=495.
Step A. 6-(1-((5-Bromo-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridine (Compound 522) The title compound was prepared similar to Example 3. Step B. 7-Methyl-6-(4-piperidyl)[1,2,4]triazolo[1,5-a]pyridine;hydrochloride (1569 mg, 6.21 mmol, 1.0 eq), CH2Cl2 (50 mL), N,N-diisopropylethylamine (3.24 mL, 18.6 mmol, 3.0 eq), and 5-bromo-1-methyl-pyrazole-4-sulfonyl chloride (1611 mg, 6.21 mmol, 1.0 eq) were used to give the title compound (1190 mg, 43%). 1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.26 (s, 1H), 7.84 (s, 1H), 7.53 (s, 1H), 4.05 (dt, J=9.6, 2.3 Hz, 2H), 3.98 (s, 3H), 2.70 (tt, J=11.9. 3.2 Hz, 1H), 2.60 (tdJ=12.1, 2.5 Hz, 2H), 2.43 (d, J=1.1 Hz, 3H), 2.05-1.95 (m, 2H), 1.83 (qd, J=13.0. 12.5, 3.9 Hz, 2H). ES-MS [M+H]+=439 and 441.
Step B. tert-Butyl 4-(1-methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yl)-3,6-dihydropyridine-1(2H)-carboxylate The title compound was prepared similar tolintermediate Example 14. Step A. 6-(1-((5-Bromo-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridine (15 mg, 0.03 mmol, 1.0 eq), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate (21.1 mg, 0.07 mmol, 2.0 eq), K2CO3 (19.2 mg, 0.14 mmol, 4.0 eq), Pd(dppf)Cl2 (2.5 mg, 0.003 mmol, 0.1 eq), 1,4-dioxane (0.58 mL), and H2O (0.1 mL) were used to give the title compound (15.8 mg, 85%). ES-MS [M+H-tBu]+=486.
Step C. tert-Butyl 4-(1-methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yl)piperidine-1-carboxylate The title compound was prepared similar to Intermediate Example 14. Step B. tert-Butyl 4-(1-methyl-4-(0-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yl)-3,6-dihydropyridine-1(2H)-carboxylate (61.6 mg, 0.11 mmol, 1.0 eq), 20% wt Pd(OH)2/C (8.0 mg, 0.011 mmol, 0.1 eq), aqueous ammonium formate solution (1 g/mL) (0.13 mL, 2.08 mmol, 18.3 eq), and EtOH (1 mL) were used to give the title compound (34.3 mg, 55%), ES-MS [M+H-tBu]+=488.
Step D. 7-Methyl-6-(1-((1-methyl-5-(piperidin-4-yl)-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine The title compound was prepared similar to Example 3. Step A. tert-Butyl 4-[2-methyl-4-[[4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-1-piperidyl]sulfonyl]pyrazol-3-yl]piperidine-1-carboxylate (34.3 mg, 0.063 mmol, 1.0 eq) was used to give the title compound (10.9 mg, 39%).1H-NMR (400 MHz, MeOD) δ 8.60 (s, 1H), 8.30 (s, 1H), 7.73 (s, 1H), 7.55 (s, 1H), 4.03 (s, 3H), 3.94-3.86 (m, 2H), 3.63 (tt, J=12.8, 3.7 Hz, 1H), 3.18 (d, 11.8 Hz, 2H), 2.88 (tt, J=12.1, 3.3 Hz. 1H), 2.70 (td, J=12.4, 2.7 Hz, 2H), 2.61 (td, J=12.0, 2.5 Hz, 2H), 2.49 (d, J=1.1 Hz, 3H), 2.19-2.07 (m, 2H), 2.07-1.98 (m, 2H), 1.91-1.78 (m, 2H), 1.75 (d, J=10.6 Hz, 2H). ES-MS [M+H]=444.
Step A. 7-Chloro-6-(piperidin-4-yl-2,2,6,6-d4)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride The title compound was prepared similar to Example 3. Step A. tert-Butyl 4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate-2,2,6,6-d4 (291.1 mg, 0.85 mmol, 1.0 eq) was used to give the title compound (236 mg, 99%). ES-MS [M+H]+=241.
Step B. 5-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl-2,2,6,6-d4)sulfonyl)-2-methyloxazole The title compound was prepared similar to Example 3. Step B. 7-Chloro-6-(piperidin-4-yl-2,2,6,6-d4)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (114.5 mg, 0.41 mmol, 1.0 eq), 2-methyloxazole-5-sulfonyl chloride (75.0 mg, 0.41 mmol, 1.0 eq), and N,N-diisopropylethylamine (0.29 mL, 1.65 mmol, 4.0 eq) were used to give the title compound (98.6 mg, 62%). 1H-NMR (400 MHz, CDCl3) δ 8.43 (s, 1H), 8.34 (s, 1H), 7.84 (s, 1H), 7.52 (s, 1H), 3.05 (tt, J=12.2, 2.9 Hz, 1H), 2.59 (s, 3H), 2.18-2.09 (m, 2H), 1.78 (t, J=12.9 Hz, 2H). ES-MS [M+H]+=386.
Step A. 1-((5-Chloro4-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(3-(furan-2-yl)-1H-pyrazol-5-yl)piperidine (Compound 587) The title compound was prepared similar to Example 3. Step B. 5-Chloro-1-methyl-1H-pyrazole-4-sulfonyl chloride (25 mg, 0.12 mmol, 1.0 eq), 4-(3-(furan-2-yl)-1H-pyrazol-5-yl)piperidine (25.3 mg, 0.12 mmol, 1.0 eq), CH2Cl2 (1.0 mL), and N,N-diisopropylethylamine (0.1 ml, 0.58 mmol, 5.0 eq) were used to give the title compound (30.1 mg, 65%). 1H-NMR (400 MHz, CDCl3) δ 7.77 (s, 1H), 7.41 (dd, 1.8, 0.8 Hz, 1H), 6.58 (dd, J=3.4, 0.8 Hz, 1H), 6.44 (dd, J=3,4, 1.8 Hz, 1H), 6.27 (s, 1H), 3.91 (s, 3H), 3.88-3.80 (m, 2H), 2.68 (tt, J=11.6, 3.8 Hz, 1H), 2.54 (td, J=11.9, 2.6 Hz, 2H), 2.05 (ddd, J=14.2, 4.0, 2.0 Hz, 2H), 1.83 (dtd, J=13.3, 11.7, 4.0 Hz, 2H). ES-MS [M+H]+=396.0.
Step B. 1-((5-Chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(3-(furan-2-yl)-1-methyl-1H-pyrazol-5-yl)piperidine and 1-((5-chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(5-(furan-2-yl)-1-methyl-1H-pyrazol-3-yl)piperidine To a solution of 1-((5-chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(3-(furan-2-yl)-1H-pyrazol-5-yl)piperidine (20 mg, 0.05 mmol, 1.0 eq) in DMF (0.3 mL) were added NaH (10 mg, 0.25 mmol, 60% w/w) and Mel (10 uL, 0.2 mmol). The reaction mixture was stirred at room temperature for 6 h. The reaction mixture was then quenched with sat. aq. NaHCO3 (0.5 mL) and extracted with EtOAc (3×5 mL). The combined organic extracts were dried over Na2SO4 and concentrated to dryness. The residue was purified by reverse phase HPLC (15-95% CH3CN in 0.1% TFA aqueous solution) to give 1-((5-chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(3-(furan-2-yl)-1-methyl-1H-pyrazol-5-yl)piperidine (6.2 mg, 30%) and 1-((5-chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(5-(furan-2-yl)-1-methyl-1H-pyrazol-3yl)piperidine (5.7 mg, 28%).
1-((5-chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(3-(furan-2-yl)-1-methyl-1H-pyrazol-5-yl)piperidine: 1H NMR (400 MHz, CDCl3) δ 7.79 (s, 1H), 7.42 (dd, J=1.8, 0.8 Hz, 1H), 6.60 (dd, J=3.3, 0.8 Hz, 1H), 6.44 (dd, J=3.3, 1.8 Hz, 1H), 6.25 (d, J=0.5 Hz, 1H), 3.96 (dt, J=11.8, 2.5 Hz, 2H), 3.92 (s, 3H), 3.81 (s, 3H), 2.65-2.51 (m, 3H), 2.06-1.96 (m, 2H), 1.82 (dtd, J=13.4, 12.0, 4.1 Hz, 2H). ES-MS [M+H]+=410.
1-((5-chloro-1-methyl-1H-pyrazol-4-yl)sulfonyl)-4-(5-(furan-2-yl)-1-methyl-1H-pyrazol-3-yl)piperidine: 1H NMR (400 MHz, CDCl3) δ 7.78 (s, 1H), 7.49 (dd, J=1.8, 0.8 Hz, 1H), 6.56-6.47 (m, 2H), 6.26 (s, 1H), 3.97 (s, 3H), 3.91 (s, 3H), 3.89 (s, 1H), 3.86 (s, 1H), 2.71-2.52 (m, 3H), 2.11-2.01 (m, 2H), 1.83 (dtd, J=13.3, 11.8, 4.0 Hz, 2H). ES-MS [M+H]+=410.
Step A. 5-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-2-(1,3-dioxolan-2-yl)thiazole The title compound was prepared similar to Example 3. Step B. 7-Chloro-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine hydrochloride (58.8 mg, 0.22 mmol, 1.1 eq), 2-(1,3-dioxolan-2-yl)thiazole-5-sulfonyl chloride (50 mg, 0.20 mmol, 1.0 eq), N,N-diisopropylethylamine (0.10 InL, 0.59 mmol, 3.0 eq), and CH2Cl2 (3.3 mL) were used to give the title compound (46.8 mg, 52%). 1H-NMR (400 MHz, CDCl3) δ 8.43 (s, 1H), 8.33 (s, 1H), 8.18 (s, 1H), 7.82 (s, 1H), 6.14 (s, 1H), 4.22-4.16 (m, 2H), 4.16-4.11 (m, 2H), 4.08-3.99 (m, 2H), 2.98 (tt, J=12.1, 3.0 Hz, 1H), 2.59 (td, J=12.1, 2.2 Hz, 2H), 2.15 (m, 2H), 1.84 (qd, J=12.7, 3.9 Hz, 2H). ES-MS [M+H]+=456.
Step B. 5-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)thiazole-2-carbaldehyde To a solution of 5-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-2-(1,3-dioxolan-2-yl)thiazole (10 mg, 0.02 mmol, 1 eq) in CH2Cl2 (0.5 mL) was added 12 M HCl (0.2 mL). The reaction mixture was stirred at room temperature for 4 days. The reaction mixture was then concentrated under reduced pressure to get the crude mixture of title compound (8 mg). This was used for the next step without further purification.
Step C. (5-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-tl)piperidin-1-yl)sulfonyl)thiazol-2-yl)methanol To a solution of 5-((4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)thiazole-2-carbaldehyde (8 mg, 0.018 mmol, 1 eq) in MeOH (1 mL) was added NaBH4 (3 mg, 0.078 mmol, 4 eq). The solution was stirred at room temperature for 2 h. After which time, the reaction mixture was quenched with sat. aq. NaHCO3 (1 mL) and extracted with CH2Cl2 (3×3 mL). The combined organic extracts were concentrated to dryness and purified by reverse phase HPLC (12-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound (3.6 mg, 44% over 2 steps). 1H-NMR (400 MHz, MeOD) δ 8.80 (s, 1H), 8.39 (s, 1H), 8.16 (s, 1H), 7.90 (s, 1H), 4.89 (s, 2H), 3.98 (d, J=11.8 Hz, 2H), 3.07 (tt, J=12.1, 3.1 Hz, 1H), 2.63 (td, J=12.1, 2.4 Hz, 3H), 2.13 (m, 2H), 1.90 (qd, J=12.7, 4.0 Hz, 2H). ES-MS [M+H]+=414.2.
To a solution of (1-methyl-4-((4-(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-1H-pyrazol-5-yl)methanamine (10 mg, 0.03 mmol, 1.05 eq) and methyl 2-formylnicotinate (4 mg, 0.03 mmol, 1 eq) in DCE (0.5 mL) was added NaBH(OAc)3 (8 mg, 0.04 mmol, 1.5 eq). The reaction was stirred at rt for 12 days, then was quenched with sat. aq. NaHCO3 (0.1 mL) and extracted with CH2Cl2 (3×3 mL). The combined organic layers were concentrated and purified by reverse phase HPLC (12-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound (3.6 mg, 29%). 1H-NMR (400 MHz, CDCl3) δ 8.78 (dd, J=4.9, 1.6 Hz, 1H), 8.42 (s, 1H), 8.28 (s, 1H), 8.12 (dd, J=7.7, 1.5 Hz, 1H), 7.78 (s, 1H), 7.56 (s, 1H), 7.42 (dd, J=7.7, 5.0 Hz, 1H), 5.19 (s, 2H), 4.50 (s, 2H), 4.01 (s, 3H), 3.98 (m, 2H), 2.72 (tt, J=12.1, 3.0 Hz, 1H), 2.55 (td, J=11.9, 2.0 Hz, 2H), 2.44 (s, 3H), 2.03 (br d, J=12.9 Hz, 2H), 1.93-1.79 (m, 2H). ES-MS [M+H]+=507.2.
To a microwave vial was added a mixture of 6-(1-((5-bromo-1-methyl-1H-pyrazol-4-yl)sulfony)piperidin-4-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridine (Compound 577, Example 24, Step A.) (15 mg, 0.03 mmol, 1 eq), 4-methylthiazole (6.8 mg, 0.07 mmol, 2 eq), potassium acetate (6.7 mg, 0.07 mmol, 2 eq), palladium(II) acetate (0.8 mg, 3 μmol, 0.1 eq), followed by DMA (0.5 mL). The reaction mixture was purged with N2 and heated to 150° C. overnight. After which time, additional 4-methylthiazole (6.8 mg, 0.07 mmol, 2 eq), potassium acetate (6.7 mg, 0.07 mmol, 2 eq), and palladium(II) acetate (0.8 mg, 3 μmol, 0.1 eq) were added and stirred for an additional 24 h at 150 before quenching with sat. aq. NaHCO3 solution (1 mL). The reaction mixture was extracted with CH2Cl2 (3×5 mL). The combined organic extracts were washed with H2O, concentrated to dryness and purified by reverse phase HPLC (12-95% CH3CN in 0.1% TFA aqueous solution). to give the title compound (2 mg, 13%). 1H-NMR (400 MHz, CDCl3) δ 8.98 (s, 1H, 8.34 (s, 1H, 8.28 (s, 1H), 7.93 (s, 1H), 7.57 (s, 1H), 3.78 (d, J=12.2 Hz, 2H), 3.74 (s, 3H), 2.67 (tt, J=12.2, 3.1 Hz. 1H), 2.52-2.45 (m, 2H), 2.44 (s, 3H), 2.39 (s, 3H), 1.98-1.89 (m, 2H), 1.78-1.65 (m, 2H). ES-MS [M+H]+=458.
Step A. Methyl 6-(1-((3-methylisothiazo1-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylate The title compound was prepared similar to Example 3. Step B. 3-Methylisothiazole-5-sulfonyl chloride (250 mg, 1.26 mmol, 1.0 eq), methyl 6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylate hydrochloride (413 mg, 1.39 mmol, 1.1 eq), N,N-diisopropylethylamine (0.2.9 mL, 1.65 mmol, 4.0 eq), CH2Cl2 (10 mL) were used to give the title compound (467.4 mg, 87%). 1H-NMR (400 MHz, CDCl3) δ 8.53 (s, 1H), 8.41 (s, 1H), 8.32 (s, 1H), 7.32 (s, 1H), 4.02-3.95 (m, 2H), 3.93 (s, 3H), 3.47 (tt, J=12.2, 3.1 Hz, 1H), 2.57 (s, 3H), 2.50 (td, J=12.0, 2.5 Hz, 2H), 2.11 (dt, J=12.9, 2.5 Hz, 2H), 1.91-1.78 (m, 2H). ES-MS [M+H]+=422.
Step B. (6-(1-((3-Methylisothiazol-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl)methanol To a stirring solution of methyl 6-(1-((3-methylisothiazol-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-d]pyridine-7-carboxylate (30 mg, 0.07 mmol, 1.0 eq) in THF (1 mL) at 0° C. was added lithium aluminum hydride (4.1 mg, 0.11 mmol, 1.5 eq). The reaction proceeded at 0° C. for 30 min. After which time, the reaction mixture was quenched with acetone (0.1 mL) at 0° C. and warmed to room temperature. The reaction mixture was diluted with CH2Cl2 (3 mL) and filtered through Celite and washed with CH2Cl2. Then, the reaction mixture was concentrated in vacuo. The crude reaction mixture was purified by column chromatography (0-20% MeOH in CH2Cl2) to give the title compound (23.6 mg, 84%). 1H-NMR (400 MHz, DMSO) δ 8.84 (s, 1H), 8.40 (s, 1H), 7.77 (s, 1H), 7.73 (s, 1H), 5.55-5.47 (m, 1H), 4.63 (d, J=4.3 Hz, 2H), 3.78 (d, J=11.4 Hz, 2H), 2.79 (dt, J=11.3, 3.8 Hz, 1H), 2.59 (m, 2H), 2.54 (s, 3H), 1.98-1.81 (m, 4H). ES-MS [M+H]+=394.
Step C. (6-(1-((3-Methylisothiazol-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl)methyl methanesulfonate and 5-((4-(7-(chloromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole To a solution of (6-(1-((3-methylisothiazol-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl)methanol (23.2 mg, 0.06 mmol, 1.0 eq) in CH2Cl2 (1 mL), mesyl chloride (6 μL, 0.071 mmol, 1.2 eq), 4-dimethylaminopyridine (1 mg, 0.001 mmol, 0.01 eq), and N,N-diisopropylethylamine (0.02 mL, 0.09 mmol, 1.5 eq) were added. The reaction mixture was stirred at room temperature for 4 h. The reaction mixture was quenched with H2O (0.5 mL) and extracted with CH2Cl2 (3×3 mL). The combined extracts were passed through a phase separator. The organics were concentrated under reduced pressure to get the crude mixture of title compound (27 mg). * This mixture was used for the next step without further purification. ES-MS [M+H]+=472: (6-(1-((3-methylisothiazol-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl)methyl methanesulfonate; ES-MS [M+H]+ for=412: 5-((4-(7-(chloromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole.
Step B. 5-((4-(7-(Fluoromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole and 5-((4-(7-(chloromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole To a solution of (6-(1-((3-methylisothiazol-5-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl)methyl methanesulfonate and 5-(4-(7-(chloromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole (27 mg) in CH3CN (1 mL), 1M TBAF in THF (1.03 mL) were added. The reaction mixture was stirred at 80° C. for overnight. After which time, the reaction mixture was quenched with sat. NaHCO3 (1 mL), and extracted with CH2Cl2 (3×10 mL). The combined extracts were dried with Na2SO4, filtered, and concentrated under reduced pressure. The crude was then purified by reverse phase HPLC (12-95% CH3CA in 0.1% TFA aqueous solution) to give 5-((4-(7-(fluoromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole (8.0 mg, 35% over 2 steps). 1H-NMR (400 MHz, MeOD) δ 8.80 (s, 1H), 8.40 (s, 1H), 7.80 (d, J=0.9 Hz, 1H), 7.58 (s, 1H), 5.62 (dd, J=46.7, 1.0 Hz, 2H), 4.02-3.92 (m, 2H), 2.82 (tt, J=12.2, 3.3 Hz, 1H), 2.62 (td, J=12.1, 2.8 Hz, 2H), 2.56 (s, 3H), 2.11-2.02 (m, 2H), 1.95 (qd, J=12.5, 4.1 Hz, 2H). ES-MS [M+H]+=396. * 5-((4-(7-(Chloromethyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-3-methylisothiazole (2.6 mg) was also isolated. 1H-NMR (400 MHz, MeOD) δ 8.81 (s, 1H), 8.40 (s, 1H), 7.85 (s, 1H), 7.58 (s, 1H), 4.87 (s, 2H), 3.98 (m, 2H). 3.00 (tt, J=12.1, 3.4 Hz, 1H), 2.64 (td, J=12.1, 2.6 Hz, 2H), 2.57 (s, 3H), 2.16-2.07 (m, 2H), 2.03-1.91 (m, 2H). ES-MS [M+H]+=412.
Step A. 2-(Benzylthio)-5-methyl-1,3,4-oxadiazole To a mixture of 5-methyl-1,3,4-oxadiazole-2-thiol (470 mg, 4.1 mmol, 1 eq) and K2CO3 (1.68 g, 12.1 mmol, 3 eq) in CH3CN (9 mL) was added bromomethylbenzene (529 uL, 4.5 mmol, 1.1 eq) in one portion at room temperature under N2. The mixture was stirred at 60° C. for 16 h. After which time, the residue was poured into H2O (10 mL). The aqueous phase was extracted with CH2Cl2 (3×10 mL).The combined organic phase was dried with Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by column chromatography (SiO2, Petroleum ether/EtOAc=5/1 to 3/1) to give the title compound (0.64 g, 3.10 mmol, 76%).
Step B. 2-((4-(7-Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)thio)-5-methyl-1,3,4-oxadiazole Step 1. To a mixture of 2-benzylsulfanyl-5-methyl-1,3,4-oxadiazole (0.2 g, 970 umol, 1 eq) in CH3CN (1 mL) was added NCS (388.4 mg, 2.9 mmol, 3 eq) in one portion at 0° C. under N2.The mixture was stirred at room temperature for 16 h. TLC (Petroleum ether:EtOAc=3:1, Rf(staring material)=0.32, Rf(product)=0.21) showed the reaction was completed to give (5-methyl-1,3,4-oxadiazol-2-yl) thiohypochlorite (0.1 g, 664 umol, 68%) as yellow oil was used into the next step without further purification. Step 2. To a mixture of 7-chloro-6-(4-piperidyl)[1,2,4]triazolo[1,5-a]pyridine (78.4 mg, 286.9 umol, 1.2 eq, HCl salt) and N,N-diisopropylethylamine (125 uL, 717.2 umol, 3 eq) in CH3CN (1 mL) was added (5-methyl-1,3,4-oxadiazol-2-yl) thiohypochlorite (36 mg, 239.1 umol, 1 eq) in one portion at 0° C. under N2. The mixture was stirred at room temperature for 1 h. TLC(Petroleurn ether:EtOAc=3:1) showed the reaction was completed. The residue was concentrated under reduced pressure. The residue was purified by prep-TLC (SiO2, Petroleum ether:EtOAc=3:1) to give the title compound (20 mg, 23%)
Step C. 2-((4-(7Chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidin-1-yl)sulfonyl)-5-methyl-1,3,4-oxadiazole To a mixture of 2-[[4-(7-chloro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-1-piperidyl]sulfanyl]-5-methyl-1,3,4-oxadiazole (0.02 g, 57.0 umol, 1 eq) in CH2Cl2 (1 mL) was added m-CPBA (61.5 mg, 285 umol, 80% purity, 5 eq) in one portion at 0° C. under N2. The mixture was stirred at room temperature for 1 h. The residue was concentrated under reduced pressure. The residue was purified by prep-TLC (SiO2, Petroleum ether:EtOAc=3:1). The residue was purified by prep-HPLC (neutral condition). column: Phenomenex Gemini-NX C18 75*30mm*3 um; mobile phase: [H2O (10 mM NH4HCO3)—CH3CN]; B %: 20-50%, 12 min to give the title compound (1 mg, 4%). 1H-NMR (400 MHz, CDCl3) δ 8.50 (s, 1H, 8.39 (s, 1H), 7.91-7.96 (m, 1H), 4.19 (br d, J=12.6 Hz, 2H), 3.29-3.38 (m, 2H), 3.19-3.27 (m, 1H), 2.68 (s, 3H), 2.13-2.24 (m, 2H), 1.85-2.00 (m, 2H). ES-MS [M+H]+=383.1
The title compound was prepared similar to Example 34. Step A, Step B, and Step C. (18.8 mg) 1H-NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 8.32-8.38 (m, 1H), 7.83-7.90 (m, 1H), 4.13-4.56 (m, 2H), 3.32 (br t, J=12.5 Hz, 2H), 3.15-3.26 (m, 1H), 2.68 (s, 3H), 2.20 (br d, J=13.0 Hz, 2H), 1.85-1.96 (m, 2H). ES-MS [M+H]+=399.
Step A. 7-chloro-6-(piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-2,5,8-d3 hydrochloride To a solution of tert-butyl 4-(7-chloro-2,5,8-trideuterio-[1,2,4]triazolo[1,5-a]pyridin-6-yl)piperidine-1-carboxylate (141 mg, 0.4 mmol, 1 eq) in CH2Cl2 (0.5 mL) was added 4 M HCl in dioxane (1.5 mL, 6,0 mmol, 14.6 eq) at room temperature. After 16 h, the reaction was concentrated to give the crude product which was used for the next step directly. ES-MS [M+H]+=240.4.
Step B. 5-[[4-(7-Chloro-2,5,8-trideuterio-[1,2,4]triazolo [1,5-a] pyridin-6-yl)-1-piperidyl]sulfonyl]-2-methyl-oxazole The title compound was prepared similar to Example 3. Step B. 2-Methyloxazole-5-sulfonyl chloride (7.6 mg, 0.04 mmol, 1.0 eq) and 7-chloro-2,5,8-trideuterio-6-(4-piperidyl)[1,2,4]triazolo[1,5-a]pyridine (10 mg, 0.04 mmol, 1.0 eq), CH2Cl2 (1 mL), and N,N-diisopropylethylamine (40 μL, 0.21 mmol, 5.0 eq) were used to give the title compound (9.3 mg, 58%), 1H-NMR (400 MHz, CDCl3) δ 7.51 (s, 1H), 4.07 (dp, J=12.2, 1.9 Hz, 2H), 3.04 (tt, J=12.2, 3.3 Hz, 1H), 2.79 (td, J=12.4, 2.4 Hz, 2H), 2.58 (s, 3H), 2.14 (dt, J=13.1, 2.4 Hz, 2H), 1.87-1.72 (m, 2H). ES-MS [M+H]+=385.2. * C2 [>98% D], C5 [>99%D], C8 [>99% D]; deuterium incorporation ratio was determined by 1H-NMR analysis.
To a reaction vial were added 6-(1-((5-bromo-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridine (10 mg, 0.02 mmol, 1.0 eq), 4,5- bis(diphenylphosphino)-9.9-dimethylxanthene (1.3 mg, 0.002 mmol, 0.1 eq), Pd2(dba)3 (2.1 mg, 0.002 mmol, 0.1 eq), and Cs2CO3 (22.4 mg, 0.07 mmol, 3.0 eq). Morpholine (1.0 mL) was added and purged with N2. The reaction mixture was heated to 140° C. for 3 days. After which time, the reaction was cooled to room temperature. The crude material was then filtered through Celite and the filtrate was concentrated to dryness. The residue was purified by reverse phase HPLC (10-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound (2.0 mg, 19%). 1H NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.30 (s, 1H), 7.70 (s, 1H), 7.60 (s, 1H), 4.04-3.90 (m, 2H), 3.82 (s, 7H), 3.27-3.18 (m, 4H), 2.83-2.63 (m, 3H), 2.46 (d, J=0.9 Hz, 3H), 2.09-1.95 (m, 2H), 1.81 (qd, J=12.5, 3.9 Hz, 2H). ES-MS [M+H]+=446.4.
Step A. Methyl 5-methoxy-1H-pyrazole-4-carboxylate. To a solution of dimethyl 2-(methoxymethylene)propanedioate (5 g, 28.7 minol, 1 eq) in MeOH (50 mL) was added hydrazine monohydrochloride (2.17 g, 31.6 mmol, 1.1 eq). The reaction mixture was stirred at 70° C. overnight. The reaction mixture was then concentrated, and the obtained residue was treated with sat. aq. NaHCO3 (15 mL), and extracted with CH2Cl2 (3×50 mL). The combined organic layer was dried over Na2SO4 and concentrated under reduced pressure. The crude residue was purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (956.2 mg, 21%). 1H-NMR (400 MHz, CDCl3) δ 7.91 (s, 1H), 4.03 (s, 3H), 3.83 (s, 3H). ES-MS [M+H]+=157.
Step B. Methyl 3-iodo-5-methoxy-1H-pyrazole-4-carboxylate. Methyl 5-methoxy-1H-pyrazole-4-carboxylate (856 mg, 5.48 mmol, 1 eq) and N-iodosuccinimide (1357 mg. 6.03 mmol, 1.1 eq) were refluxed in cyclohexane (70 mL) at 85° C. The resulting suspension was concentrated to dryness and purified by column chromatography (0-100% EtOAc in hexanes) to provide the title compound (643 mg, 41%). ES-MS [M+H]+=283.
Step C. 3Iodo-5-methoxy-1H-pyrazole. Methyl 3-iodo-5-methoxy-1H-pyrazole-4-carboxylate (643 mg, 2.28 mmol, 1 eq), NaOH (280 mg, 6.84 mmol, 3 eq) in EtOH (2 mL) and H2O (8 mL) were heated in a microwave at 170° C. for 45 min. The resulting mixture was dispersed in H2O and extracted with CH2Cl2. The organic layer was passed through a phase separator and concentrated to provide the title compound (434.8 mg, 85%), which was used for the next step without further purification. 1H-NMR (400 MHz, MeOD) δ 5.86 (s, 1H), 3.82 (s, 3H). ES-MS [M+H]+=225.
Step D. 3-Iodo-5-methoxy-1-methyl-1H-pyrazole and 5-iodo-3-methoxy-1-methyl-1H-pyrazole. To a solution of 3-iodo-5-methoxy-1H-pyrazole (486.4 mg, 2.17 mmol, 1 eq) and iodomethane (0.15 mL, 2.39 mmol, 1.1 eq) in CH3CN (20 mL) at 0° C., NaH (130 mg, 3.26 mmol, 1.5 eq) was added and stirred at 0° C. for 1 h. The reaction mixture was then warmed to room temperature, stirred overnight, quenched with H2O (2 mL) and stirred for 10 min. at 0° C. The reaction mixture was then passed through a phase separator and concentrated under reduced pressure. The residue was diluted with CH2Cl2 and hexanes. The organics were passed through a phase separator and concentrated under reduced pressure. The residue was then diluted with hexanes and filtered through a phase separator. The combined organics were concentrated under reduced pressure and the product was used in the next step without further purification. 3-Iodo-5-methoxy-1-methyl-1H-pyrazole (minor): 1H-NMR (400 MHz, CDCl3) δ 5.67 (s, 1H), 3.85 (s, 3H), 3.61 (s, 3H). ES-MS [M+H]+=239. 5-Iodo-3-methoxy-1-methyl-1H-pyrazole (major): 1H-NMR (400 MHz, CDCl3) δ 5.82 (s, 1H), 3.83 (s, 3H), 3.76 (s, 3H). ES-MS [M+H]+=239.
Step E. 3-Iodo-5-methoxy-1-methyl-1H-pyrazole-4-sulfonyl chloride and 5-iodo-3-methoxy-1-methyl-1H-pyrazole-4-sulfonyl chloride Sulfur trioxide dimethylformamide complex (380 mg, 2.5 mmol, 1.2 eq) was added to a slurry of 3-iodo-5-methoxy-1-methyl-1H-pyrazole (minor) and 5-iodo-3-methoxy-1-methyl-1H-pyrazole (major) (491.2 mg, 2.06 mmol, 1.0 eq) in DCE (7 mL) under N2. The reaction was heated to 85° C. overnight and then cooled to room temperature. To this reaction mixture, thionyl chloride (181 μL, 2.5 mmol, 1.2 eq) was added dropwise and the reaction was slowly heated over the course of 1 h, by which time it had reached 75° C. The mixture was allowed to cool to room temperature and 2 mL of CH2Cl2 and 2 mL H2O were added. The aqueous layer was extracted with CH2Cl2 (3×5 mL), passed through a phase separator and concentrated under reduced pressure to afford the crude mixture of title product (694 mg). This crude mixture of title compounds was used for the next step without further purification and characterized by 1H-NMR and LC-MS after the next step (Sulfonamide formation). ES-MS [M+H]+=337.
Step F. 7-Chloro-6-(1-((3-iodo-5-methoxy-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine. 3-Iodo-5-methoxy-1-methyl-1H-pyrazole-4-sulfonyl chloride (minor) and 5-iodo-3-methoxy-1-methyl-1H-pyrazole-4-sulfonyl chloride (major) (694.5 mg, 2.1 mmol, 1 eq) and 7-chloro-6-(4-piperidyl)[1,2,4]triazolo[1,5-a]pyridine hydrochloride (620 mg, 2.3 mmol, 1.1 eq) were added to a vial. CH2Cl2 (20 mL) and N,N-diisopropylethylamine (1.44 mL, 8.3 mmol, 4 eq) were added, and the resulting mixture was stirred at room temperature for 2 h, after which time sat. aq. NaHCO3 (5 mL) was added to quench the reaction and extracted with CH2O2 (3×20 mL). The combined organic layer was dried over Na2SO4 and concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC (5-95% CH3CN in 0.1% TFA aqueous solution) to give the title compound and 7-chloro-6-(1-((5-iodo-3-methoxy-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine (827.8 mg). This was further purified by Chiral SFC separation to provide 7-Chloro-6-(1-((3-iodo-5-methoxy-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-a]pyridine (44.4 mg, 4%). 1H-NMR. (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.34 (s,1H), 7.82 (s, 1H), 4.07 (s, 3H), 4.02 (d, J=12.2 Hz, 2H), 3.76 (s, 3H), 3.00 (t, J=12.2 Hz. 1H), 2.67 (t, J=11.1 Hz, 2H), 2.10 (d, J=12.8 Hz, 2H), 1.78 (qd, J=12.5, 4.1 Hz, 2H). ES-MS [M+H]+=537. 7-chloro-6-(1-((5-iodo-3-methoxy-1-methyl-1H-pyrazol-4-yl)sulfonyl)piperidin-4-yl)-[1,2,4]triazolo[1,5-c]pyridine (512.2 mg, 46%) was also obtained. 1H-NMR. (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.36 (s, 1H), 7.91 (s, 1H), 4.05 (d, J=12.2 Hz, 2H), 3.95 (s, 3H), 3.88 (s, 3H), 3.01 (tt, J=12.2. 3.3 Hz, 1H), 2.67 (td, J=12.3, 2.5 Hz, 2H), 2.10 (d, J=13.4 Hz, 2H), 1.78 (qd, J=12.5, 4.0 Hz, 2H). ES-MS [M+H]+=537.
Separation of the regioisomers was conducted over two separations. The first separation afforded the regioisomers in admixture with some minor impurities in the first eluting peak while the second eluting peak was undesired.
First Analytical Separation:
Chiral SFC separation was performed on a Thar (Waters) Investigator. Column: Phenomenex Lux Cellulose-3, 4.6×250 mm, 5 um. Conditions: 25% isocratic ethanol in CO2 for 8 minutes. Flow rate: 3.5 mL/min. Column temperature: 40° C. System backpressure: 100 bar.
First Preparative Separation:
Chiral SFC separation was performed on a PIC Solution SFC-PICLab PREP 100. Column: Phenomenex Lux Cellulose-3, 21.2×250 mm, 5 um. Conditions: 25% ethanol in CO2. Flow rate: 80 mL/min. Column temperature: 40° C. System backpressure: 100 bar.
New conditions were determined to further purify the regioisomers.
Second Analytical Separation:
Chiral SFC separation was performed on a Thar (Waters) Investigator. Column: Phenomenex Lux Cellulose-4, 4.6×250 mm, 5 um. Gradient conditions: 20% to 50% ethanol in CO2 over 5 minutes, hold at 50% CO2 for 13 minutes. Flow rate: 3.5 mL/min. Column temperature: 40° C. System backpressure: 100 bar.
Second Preparative Separation:
Chiral SEC separation was performed on a PIC Solution SFC-PICLab PREP 100. Column: Phenomenex Lux Cellulose-4, 21.2×250 mm, 5 um: Conditions: 50% ethanol in CO2. Flow rate: 80 mL/min. Column temperature: 40° C. System backpressure: 100 bar.
Compound 625 (first eluted peak):
Compound 626 (second eluted peak):
The compounds shownin Table 10 may be prepared similarly to the compound described above, with appropriate starting materials.
1H-NMR and/or ES-MS [M + H]+
1H-NMR (400 MHz, CDCl3) δ 7.82 (t, J = 0.9 Hz, 1H), 7.72-7.59 (m, 4H), 6.88 (d, J = 8.3 Hz, 1H), 5.89 (t, J = 1.7 Hz, 1H), 4.70 (t, J = 8.8 Hz, 2H), 3.81 (q, J = 2.9 Hz, 2H), 3.36 (t, J = 5.6 Hz, 2H), 3.29 (t, J = 8.8 Hz, 2H), 2.61 (tt, J = 2.7, 1.3 Hz, 2H), 2.33 (d, J = 1.0 Hz, 3H). ES-MS [M + H]+ = 397
1H-NMR (400 MHz, CDCl3) δ 7.71 (s, 1H), 7.64-7.55 (m, 4H), 6.90 (d, J = 8.3 Hz, 1H), 4.70 (t, J = 8.8 Hz, 2H), 3.30 (t, J = 8.8 Hz, 2H), 3.28-3.15 (m, 8H), 2.27 (d, J = 0.8 Hz, 3H). ES-MS [M + H]+ = 400
1H-NMR (400 MHz, CD3OD) δ 8.45 (s, 1H), 8.32 (s, 1H), 7.71 (dt, J = 7.2, 1.3 Hz, 1H), 7.58-7.53 (m, 1H), 6.74 (d, J = 11.0 Hz, 1H), 5.81 (tt, J = 3.3, 1.7 Hz, 1H), 4.74 (t, J = 8.8 Hz, 2H), 3.91 (q, J = 2.7 Hz, 2H), 3.51 (td, = 5.6, 1.2 Hz, 2H), 3.27 (tt, J = 8.8, 1.4 Hz, 2H), 2.44 (ddt, J = 4.7, 3.0, 1.8 Hz, 2H), 2.37 (s, 3H). ES-MS [M + H]+ = 415
1H-NMR (400 MHz, CDCl3) δ 8.39 (s, 1H), 8.34 (s, 1H), 7.70-7.61 (m, 2H), 6.62 (d, J = 10.6 Hz, 1H), 4.73 (t,H = 8.8 Hz, 2H), 4.04 (dp, J = 12.2, 1.9 Hz, 2H), 3.29-3.19 (m, 2H), 2.81-2,61 (m, 3H), 2.46 (s, 3H), 1.98 (dt, J = 13.4, 2.5 Hz, 2H), 1.80 (qd, J = 12.5, 3.9 Hz, 2H). ES-MS [M + H]+ = 417
1H-NMR (400 MHz, CDCl3) δ 8.36 (d, J = 17.1 Hz, 2H), 7.68 (s, 1H), 7.65-7.56 (m, 2H), 6.90 (d, J = 8.3 Hz, 1H), 4.71 (t, J = 8.8 Hz, 2H), 3.98 (dq, J = 11.7, 2.2 Hz, 2H), 3.30 (t, J = 8.8 Hz, 2H), 2.66 (tt, J = 12.1, 3.3 Hz, 1H), 2.46-2,35 (m, 5H), 1.97 (dt, J = 13.5, 2.5 Hz, 2H), 1.83 (qd, J = 12.5, 3.9 Hz, 2H). ES-MS [M + H]+ = 399
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.71 (s, 1H), 7.52 (t, J = 1.0 Hz, 1H), 3.96 (dp, J = 11.5, 1.9 Hz, 2H), 3.89 (s, 3H), 2.74-2,58 (m, 1H), 2.50 (td, J = 12.0, 2.4 Hz, 2H), 2.46- 2.40 (m, 6H), 2.00 (dt, J = 13.3, 2.6 Hz, 2H), 1.90-1,76 (m, 2H). ES-MS [M + H]+ = 375
1H NMR (400 MHz, CDCl3) δ 8.39 (d, J = 13.1 Hz, 2H), 7.71 (s, 1H), 7.64-7.57 (m, 2H), 6.90 (d, J = 8.4 Hz, 1H), 4.04- 3.95 (m, 2H), 2.67 (tt, 12.2, 3.4 Hz, 1H), 2.51-2,35 (m, 5H), 2.00 (d, J = 3.4 Hz, 2H), 1.91-1,77 (m, 2H). ES-MS [M + H]* = 403
1H-NMR (400 MHz, CDCl3) δ 8.30 (s, 2H), 7.80 (d, J = 1.1 Hz, 1H), 7.58 (s, 1H), 6.72 (s, 1H), 5.77 (tt, J = 3.3, 1.6 Hz, 1H), 4.78 (t, J = 9.0 Hz, 1H), 4.18 (dd, J = 8.8, 7.3 Hz, 1H), 3.88 (q, J = 2.8 Hz, 2H), 3.57 (q, = 7.4 Hz, 1H), 3.47 (t, J = 5.6 Hz, 2H), 2.60 (s, 3H) 2.46-2,41 (m, 2H), 2.39 (s, 3H), 1.36 (d, JJ = 6.9 Hz, 3H). ES-MS [M + H]+ = 425
1H-NMR (400 MHz, CDCl3) δ 8.27 (s, 1H), 7.77 (d, = 1.1 Hz, 1H), 7.54 (s, 1H), 6.72 (s, 1H), 4.78 (t, J = 9.0 Hz, 1H), 4.18 (dd, J = 8.8, 7.3 Hz, HE. 3.94- 3.83 (m, 2H), 3.56 (dt, J = 14.7, 7.4 Hz, 1H), 2.78 (tq, J = 12.4, 3.3, 2.8 Hz, 3H), 2.60 (m, 6H), 2.45 (d, J = 0.9 Hz, 3H), 2.00-1,92 (m, 2H), 1.73 (tdd, J = 14.2, 11.3, 6.3 Hz, 2H), 1.35 (d, J = 6.9 Hz, 3H). ES-MS [M + H]+ = 441
1H-NMR (400 MHz, CDCl3) δ 8.28 (d, J = 3.4 Hz, 2H), 7.79 (d, J 1.1 Hz, 1H), 7.15 (s, 1H), 6.74 (s, 1H), 4.80 (t, J = 9.0 Hz, 1H), 4.20 (dd, J = 8.8, 7.3 Hz, 1H), 3.99 (s, 3H), 3.94-3.83 (m, 2H), 3.58 (dt, J = 14.6, 7.3 Hz, 1H), 3.05-2,94 (m, 1H), 2.81 (tt, J = 12.2, 2.2 Hz, 2H), 2.62 (s, 3H), 2.02 (dt, J = 13.0, 2.9 Hz, 2H), 1.73 (qdd, J = 12.5, 6.0, 4.2 Hz, 2H), 1.38 (d, J = 6.9 Hz, 3H). ES-MS [M + H]+ = 443
1H-NMR (400 MHz, CDCl3) δ 8.26 (s, 1H), 7.65-7.56 (m, 2H), 7.48 (s, 1H), 6.89 (d, J = 8.3 Hz, 1H), 3.97 (dt, J = 12.7, 3.5 Hz, 2H), 2.60 (s, 4H), 2.45- 2.34 (m, 5H), 1.95 (d, J = 12.3 Hz, 2H), 1.88-1,73 (m, 2H). ES-MS [M + H]+ = 417
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8,29 (s, 1H), 7.77 (d, J = 1.1 Hz, 1H), 7.59 (t, J = 1.0 Hz, 1H), 6.72 (s, 1H), 4.78 (t, J = 9.0 Hz, 1H), 4.17 (dd, J = 8.8, 7.3 Hz, 1H), 3.88 (dddd, J = 12.0, 10.0, 4.1, 2.1 Hz, 2H), 3.57 (q, J = 7.4 Hz, 1H), 2.79 (tq, J = 12.3, 3.8, 3.1 Hz, 3H), 2.62 (s, 3H), 2.46 (d, J = 1.0 Hz, 3H), 1.97 (dp, J = 13.1, 2.6 Hz, 2H), 1.82- 1,65 (m, 2H), 1.35 (d, J = 6.9 Hz, 3H). ES-MS [M + H]+ = 427
1H-NMR (400 MHz, CDCl3) δ 8.39 (s, 1H), 8.31 (s, 1H), 7.91 (d, J = 1.1 Hz, 1H), 7.61 (t, J = 1.0 Hz, 1H), 4.02 (s, 5H), 2.83-2,66 (m, 3H), 2.46 (d, J = 1.0 Hz, 3H), 2.05-1,96 (m, 2H), 1.89-1,74 (m, 2H). ES-MS [M + H]+ = 429
1H-NMR (400 MHz, CDCl3) δ 8.39 (s, 1H), 8.27 (d, J = 12.0 Hz, 2H), 7.73- 7.65 (m, 2H), 7.57 (t, J = 1.0 Hz, 1H), 7.54-7.45 (m, 2H), 7.42-7.33 (m, 1H), 4.03 (dp, J = 11.4, 1.8 Hz, 2H), 2.76- 2.68 (m, 1H), 2.63-2,52 (m, 5H), 2.43 (d, J = 1.0 Hz, 3H), 2.08-1,99 (m, 2H), 1.93-1,79 (m, 2H). ES-MS [M + H]+ = 437
1H-NMR (400 MHz, CDCl3) δ 8.40 (s, 1H), 8.35 (s, 1H), 7.69 (s, 1H), 7.61 (dd, J = 7.1, 1.1 Hz, 1H), 6.62 (d, J = 10.6 Hz, 1H), 4.84 (t, J = 9.0 Hz, 1H), 4.24 (dd, J = 8.9, 7.3 Hz, 1H), 4.10-4.00 (m, 2H), 3.64-3.51 (m, 1H), 2.82-2.64 (m, 3H), 2.47 (d, J = 1.0 Hz, 3H), 1.99 (dq, J = 13.3, 2.4 Hz, 2H), 1.81 (qt, J = 12.4, 4.2 Hz, 2H), 1.36 (d, J = 6.9 Hz, 3H). ES-MS [M + H]+ = 431
1H-NMR (400 MHz, CDCl3) δ 8.41 (s, 1H), 8.36 (s, 1H), 7.71 (s, 1H), 6.51- 6.42 (m, 1H), 4.86 (dt, J = 23.3, 9.1 Hz, 1H), 4.34 (ddd, J = = 31.8, 9.0, 6.2 Hz, 1H), 4.14 (d, J = 12.3 Hz, 2H), 3.74 (dt, J = 14.4, 7.2 Hz, 1H), 2.78 (ddt, J = 24.3, 19.1, 13.2 Hz, 3H), 2.48 (s, 3H), 2.02 (d, J = 13.1 Hz, 2H), 1.84 (dd, J = 12.8, 4.1 Hz, 2H), 1.42 (dd, J = 6.9, 3.8 Hz, 3H). ES-MS [M + H]+ = 449
1H NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.26 (s, 1H), 7.54 (t, J = 1.0 Hz, 1H), 3.94 (dp, = 11.6, 1.9 Hz, 2H), 3.78 (s, 3H), 2.70 (tt, J = 12.1, 3.3 Hz, 1H), 2.63-2,51 (m, 2H), 2.49 (s, 3H), 2.47- 2.37 (m, 6H), 2.04-1,94 (m, 2H), 1.87- 1.72 (m, 2H). ES-MS [M + H]+ = 389
1H NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.28 (s, 1H), 7.56 (s, 1H), 3.99 (dt, J = 11.8, 2.3 Hz, 2H), 3.90 (s, 3H), 2.83- 2.69 (m, 3H), 2.59 (s, 3H), 2.45 (s, 3H), 1.99 (dt, J = 12.8, 2.2 Hz, 2H), 1.79 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 443
1H-NMR (400 MHz, CDCl3) δ 8.39-8.30 (m, 2H), 7.71-7.71 (m, 2H), 4.00-3.92 (m, 2H), 2.69 (tt, J = 12.3, 3.3 Hz, 1H), 2.49 (dd, J = 11.9, 2.3 Hz, 2H), 2.44 (s, 6H), 2.00 (d, J = 13.0 Hz, 2H), 1.83 (qd, J = 12.5, 3.9 Hz, 2H). ES-MS [M + H]+ = 378
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, H. 8.25 (s, 1H), 7.69 (s, 1H), 7.52 (t, J = 1,0 Hz, 1H), 3.95 (dp, J = 11.5, 1.9 Hz, 2H), 2.65 (tt, J = 12.2, 3.4 Hz, 1H), 2.51 (s, 3H), 2.48-2,39 (m, 5H), 1.99 (dt, J = 12.3, 2.9 Hz, 2H), 1.90-1,75 Em 2H). ES-MS [M + H]+ = 378
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.27 (s, 1H), 7.66 (s, 1H), 7.55 (t, J = 1.0 Hz, 1H), 3.99 (dp, J = 11.7, 1.9 Hz, 2H), 2.70 (tt, J = 12.0, 3.3 Hz, 1H), 2.54 (td, J = 12.0, 2.4 Hz, 2H), 2.44 (s, 3H), 2.31 (p, J = 6.8 Hz, 1H), 2.00 (ddd, J = 11.0, 4.9, 2.5 Hz, 2H), 1.92- 1.75 (m, 2H), 1.00-0.95 (m, 4H). ES-MS [M + H]+ = 404.
1H-NMR (400 MHz, CDCl3) δ 8.39 (s, 1H), 8.29 (s, 1H), 7.73 (s, 1H), 7.56 (t, J = 1.0 Hz, 1H), 4.00 (dp, J = 11.9, 1.9 Hz, 2H), 2.75 (tt, J = 12.2, 3.3 Hz, 1H), 2.65 (Id, J = 12.2, 2.4 Hz, 2H), 2.46 (s, 3H), 2.02 (dp. J = 13.0. 2.5 Hz. 2H), 1.89- 1.71 (m, 3H), 1.22-1.06 (m, 4H). ES-MS [M + H]+ = 404
1H NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.28 (s, 1H), 7.70 (s, 1H), 7.57 (t, J = 1.0 Hz, 1H), 4.09 (q, J = 7.3 Hz, 2H), 4.00 (dp, J = 11.6, 1.9 Hz, 2H), 2.71 (tt, J J = 12.1, 3.4 Hz, 1H), 2.55 (td, J = 12.1, 2.4 Hz, 2H), 2.45 (d, J = 1.0 Hz, 3H), 2.37-2.26 (m, 1H), 2.00 (dt, J = 13.1, 2.6 Hz, 2H), 1.92-1,77 (m, 2H), 1.48 (t, J = 7.3 Hz, 3H), 1.02-0.92 (m, 4H). ES-MS [M + H]+ = 415
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.74 (s, 1H), 7.53 (t, J = 1,0 Hz, 1H), 4.30 (q, J = 7.3 Hz, 2H), 3.98 (dp, J = 12.0, 1.9 Hz, 2H), 2.78- 2.61 (m, 3H), 2.44 (d, J = 1.0 Hz, 3H), 2.04-1,95 (m, 2H), 1.87-1,67 (m, 3H), 1.49 (t, = 7.3 Hz, 3H), 1.19-1,04 (m, 4H). ES-MS [M + H]+ = 415
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.27 (s, 1H), 7.55 (t, J = 1.0 Hz, 1H), 4.03 (dp, J = 11.7, 1.9 Hz, 2H), 2.81- 2.55 (m, 9H) 2.43 (d, J = 1.0 Hz, 3H) 2.02 (ddd, J = 13.2, 3.5, 1.7 Hz, 2H), 1.91- 1.76 (m, 2H). ES-MS [M + H]+ = 392
1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.28 (s, 1H), 8.17 (s, 1H), 7.56 (s, 1H), 7.15 (t, J = 60 Hz, 1H), 4.01 (dp, J = 11.6, 1.9 Hz, 2H), 2.73 (tt, J = 12.1, 3.3 Hz, 1H), 2.58 (td, J = 12.1, 2.4 Hz, 2H), 2.49 (s, 3H), 2.46-2,42 (m, 3H), 2.03 (dd, J = 13.0, 2.7 Hz, 2H), 1.92-1,77 (m, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.28 (s, 1H), 7.56 (t, J = 1.0 Hz, 1H), 6.96 (d, J = 0.6 Hz, 1H), 4.19 (s, 3H), 4.07 (dp, J = 12.0, 2.0 Hz, 2H), 2.78 (qd, J = 12.5, 5.6 Hz, 3H) 2.45 (d, J = 1.0 Hz, 3H), 2.07 (dt, J = 14.7, 2.4 Hz, 2H), 1.92-1,77 (m, 2H). ES-MS [M + H]+ = 429
1H-NMR (400 MHz, CDCl3) δ 8.36 (d, J = 7.3 Hz, 2H) 7.98 (dt, J = 8.5, 1.1 Hz, 1H), 7.79 (dt, J = 8.7, 1.0 Hz, 1H), 7.67 (s, 1H), 7.41 (ddd, J = 8.7, 6.7, 1.1 Hz, 1H), 7.32 (ddd, J = 8.5, 6.7, 1.0 Hz, 1H), 4.49 (s, 3H), 4.17-4,09 (m, 2H), 2.68 (qd, J = 12.3, 5.6 Hz, 3H), 2.42 (d, J = 0.9 Hz, 3H), 2.00 (d, J = 13.2 Hz, 2H), 1.82 (qd, = 12.6, 4.0 Hz, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.27 (s, 1H), 7.79 (s, 1H), 7.55 (t, J = 1.1 Hz, 1H), 7.28 (t, J = 60 Hz, 1H), 4.00 (dp, J = 11.5, 1.8 Hz, 2H), 2.76- 2.65 (m, 4H), 2.52 (td, J = 12.0, 2.4 Hz, 2H), 2.43 (d, J = 1.0 Hz, 3H), 2.02 (dt, J = 12.9, 2.6 Hz, 2H), 1.92-1,77 (m, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 8.43 (s, 2H), 7.88-7.79 (m, 3H), 7.28-7.24 (m, 2H), 4.04 (d, J = 11.5 Hz, 2H), 2.76- 2.65 (m, 1H), 2.50-2,38 (m, 5H), 2.02 (s, 2H), 1.86 (qd, J = 12.4, 4.0 Hz, 2H). ES-MS [M + H]+ = 375
1H-NMR (400 MHz, CDCl3) δ 8.44 (s, 2H), 7.83 (s, 1H), 7.70-7.56 (m, 2H), 7.44-7.33 (m, 1H), 4.04 (d, J = 11.9 Hz, 2H), 2.72 (t, J = 12.2 Hz, 1H), 2.55-2.37 (m, 5H), 2.03 (d, J = 13.0 Hz, 2H), 1.87 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 393
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.74 (d, J = 1.0 Hz, 1H), 7.52 (t, J = 1.0 Hz, 1H), 7.28 (t, J = 52.0 Hz, 1H), 4.13 (d, J = 1.1 Hz, 3H), 3.95 (dt, J = 11.4, 2.3 Hz, 2H), 2.72- 2.61 (m, 1H), 2.50-2,39 (m, 5H), 2.06- 1.98 (m, 2H), 1.92-1.77 (m, 2H). ES- MS [M + H]+ = 411
1H-NMR (400 MHz, CD3OD) δ 8.56 (s, 1H), 8.43 (s, 1H), 8.28 (s, 1H), 8.13 (d, J J = 1.6 Hz, 1H), 7.83 (s, 1H), 7.75 (dd, J = 8.5, 1.7 Hz, 1H), 7.51 (t, J = 1.0 Hz, 1H), 3.99 (dp, J = 11.6, 1.9 Hz, 2H), 2.80- 2.64 (m, 1H), 2.46 (td, J = 12.0, 2.4 Hz, 2H), 2.40 (d, J = 1.0 Hz, 3H), 2.06-1,94 (m, 2H), 1.92-1.76 (m, 2H). * NH was not shown. ES-MS [M + H]+ = 397
1H NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.27 (s, 1H), 8.03 (s, 1H), 7.55 (t, J = 1.0 Hz, 1H), 4.02 (dp, J = 11.7, 1.8 Hz, 2H), 2.80 (s, 3H), 2.69 (tt, J = 12.2, 3.3 Hz, 1H), 2.56 (td, J = 12.1, 2.5 Hz, 2H), 2.42 (d, J = 1.0 Hz, 3H), 2.05-2.01 (m, 2H), 1.93-1,78 (m, 2H). ES-MS [M + H]+ = 378
1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.32 (s, 1H), 7.65 (t, J = 1.0 Hz, 1H), 3.95 (dp, J = 11.5, 1.9 Hz, 2H), 2.72 (tt, J = 12.1, 3.3 Hz, 1H), 2.56 (td, J = 12.0, 2.4 Hz, 2H), 2.49 (s, 3H), 2.45 (d, J = 1.0 Hz, 3H), 2.42 (s, 3H), 2.00 (dt, J = 13.0, 2.7 Hz, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 392
1H-NMR (400 MHz, CDCl3) δ 8.30 (s, 1H), 8.19 (s, 1H), 7.81 (s, 1H), 7.49- 7.44 (m, 1H), 4.05 (q, J = 1.5 Hz, 3H), 3.93 (dp, J = 12.4, 2.0 Hz, 2H), 2.75- 2.59 (m, 3H), 2.37 (d, J = 0.9 Hz, 3H), 1.94 (dt, J = 14.4, 2.4 Hz, 2H), 1.72 (tdd, J = 13.3, 11.1, 5.1 Hz, 2H). ES-MS [M + H]+ = 429
1H-NMR (400 MHz, CDCl3) δ 8.41 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.71 (s, 1H), 3.93 (dt, J = 11.5, 3.1 Hz, 2H), 3.86 (s, 3H), 2.90 (tt, J = 11.5, 3.5 Hz, 1H), 2.60-2,49 (m, 5H), 2.48 (d, J = 1.0 Hz, 3H), 2.24-2.07 (m, 2H), 2.07-1.98 (m, 2H). ES-MS [M + H]+ = 376
1H-NMR (400 MHz, CDCl3) δ 8.33 (s, 1H), 8.25 (s, 1H), 8.12 (dd, J = 9.1, 0.8 Hz, 1H), 8.07 (dd, J = 6.8, 0.8 Hz, 1H), 7.58 (dd, J = 9.0, 6.7 Hz, 1H), 7.51 (t, J = 1.0 Hz, 1H), 4.27 (dp, J = 12.7, 2.0 Hz, 2H), 2.85 (td, J = 12.6, 2.4 Hz, 2H), 2.73 (tt, J = 12.2, 3.3 Hz, 1H), 2.40 (d, J = 1.0 Hz, 3H), 2.01 (dt, J = 13.3, 2.5 Hz, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 399
1H-NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 8.28 (s, 1H), 7.72 (s, 1H), 7.57- 7.52 (m, 1H), 4.74 (dtd, J = 47.8, 10.1, 5.0 Hz, 1H), 4.23 (dddd, J = 10.6, 5.1, 3.4, 1.9 Hz, 1H), 3.91 (dq, J = 9.6, 2.1 Hz, 1H), 3.87 (s, 3H), 2.99-2,88 (m, 1H), 2.53 (s, 3H), 2.49-2.44 (m, 2H), 2.43-2.41 (m, 3H), 2.0-2.06 (m, 1H), 1.98-1,89 (m, 1H). ES-MS [M + H]+ = 393
1H-NMR (400 MHz, CDCl3) δ 8.35 (s, 1H), 8.31-8.28 (m, 1H), 8.28 (d, J = 1.0 Hz, 1H), 8.16 (d, J = 0.9 Hz, 1H), 7.79 (dd, J = 8.8, 1.7 Hz, 1H), 7.58-7.51 (m, 2H), 4.15 (s, 3H), 4.10-4.00 (m, 2H), 2.59 (tt, J = 12.1, 3.3 Hz, 1H), 2,41 (td, J = 12.0, 2.4 Hz, 2H), 2.36 (d, J = 1.0 Hz, 3H), 1.96 (dt, J = 13.0, 2.7 Hz, 2H), 1.90- 1.75 (m, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 8.40 (s, 1H), 7.92-7.85 (m, 2H), 4.11 (t, J = 1.5 Hz, 3H), 4.02-3.90 (m, 2H), 2.98 (tt, J = 11.4, 3.6 Hz, 1H), 2.78 (td, J = 12.3, 2.7 Hz, 2H), 2.49 (d, J = 1.1 Hz, 3H), 2.21- 2.06 (m, 2H), 2.05-1,96 (m, 2H). ES-MS [M + H]+ = 430
1H-NMR (400 MHz, CDCl3) δ 8.34 (s, 1H), 7.86-7.81 (m, 1H), 3.98-3.87 (m, 2H), 3.79 (s, 3H), 2.88 (tt, J = 11.5, 3.5 Hz, 1H), 2.65 (td, J = 12.1, 2.6 Hz, 2H), 2.42 (d, J = 1.1 Hz, 3H), 2.38 (s, 3H), 2.17-2.01 (m, 2H), 1.98-1.89 (m, 2H). ES-MS [M + H]+ = 410
1H-NMR (400 MHz, CDCl3) δ 8.41 (s, 1H), 7.90 (d, J = 1.3 Hz, 1H), 7.75 (s, 1H), 4.24 (t, J = 7.4 Hz, 2H), 3.98-3.89 (m, 2H), 3.13 (t, J = 7.4 Hz, 2H), 2.90 (tt, J = 11.5, 3.5 Hz, 1H), 2.72 (p, J = 7.4 Hz, 2H), 2.53 (td, J = 11.9, 2.6 Hz, 2H), 2.48 (s, 3H), 2.26-2.13 (m, 2H), 1.99 (s, 2H). ES-MS [M + H]+ = 388
1H-NMR (400 MHz, CDCl3) δ 8.35 (s, 1H), 8.25 (s, 1H), 8.08 (s, 1H), 7.98- 7.91 (m, 2H), 7.71 (dd, J = 8.5, 1.8 Hz, 1H), 7.49 (t, J = 1.0 Hz, 1H), 4.11-4.01 (m, 2H), 3.95 (s, 3H), 2.58 (tt, J = 12.0, 3.3 Hz, 1H), 2.47-2.33 (m, 5H), 1.97 (dq, J = 12.9, 2.8 Hz, 2H), 1.92-1.77 (m, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.25 (s, 1H), 7.74 (s, 1H), 7.52 (t, J = 1.0 Hz, 1H), 4.24 (t, J = 7.4 Hz, 2H), 4.00-3.91 (m, 2H), 3.16-3.07 (m, 2H), 2.78-2,59 (m, 3H), 2.50-2,39 (m, 5H), 2.02-1.97 (m, 2H), 1.92-1.77 (m, 2H). ES-MS [M + H]+ = 387
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.34* (s, 0.17H), 8.24 (s, 1H), 8.23* (s, 0.18H), 7.78 (s, 1H), 7.75* (s, 0.16H), 7.53-7.48 (m, 1H), 4.40-4,33 (m, 2H), 4.23 (t, J = 7.4 Hz, 2H), 3.22 (td, J = 11.9, 5.7 Hz, 1H), 3.15-3.07 (m, 2H), 2.71 (tt, J = 8.2, 6.8 Hz, 2H), 2.47 (t, J = 1.3 Hz, 3H), 1.96 (tt, J = 13.1, 11.9, 3.8 Hz, 4H), 1.90-1.74 (m, 4H). ES-MS [M + H]+ = 413
1H-NMR (400 MHz, CDCl3) δ 8.27 (s, 1H), 7.70 (s, 1H), 7.49 (s, 1H), 3.99- 3.91 (m, 2H), 3.86 (s, 3H), 2.68-2,62 (m, 1H), 2.60 (s, 3H), 2.52 (s, 3H), 2.48- 2.39 (m, 5H), 2.03-1.94 (m, 2H), 1.82 (qd, J = 12.4, 3.9 Hz, 2H). ES-MS [M + H]+ = 389
1H-NMR (400 MHz, CDCl3) δ 8.65 (d, J = 1.9 Hz, 1H), 7.69 (s, 1H), 7.66 (d, J = 1.4 Hz, 1H), 3.89 (d, J = 11.5 Hz, 2H), 3.85 (s, 3H), 2.84 (tt, J = 11.6, 3.5 Hz, 1H), 2.51 (s, 3H), 2.46 (td, J = 12.1, 2.3 Hz, 2H), 2.34 (s, 3H), 2.08 (qd, J = 12.9, 12.4, 4.0 Hz, 2H), 1.79 (d, J = 12.5 Hz, 2H). ES-MS [M + H]+ = 360
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.27 (s, 1H), 7.56 (t, J = 1.0 Hz, 1H), 4.03 (q, J = 1.8 Hz, 3H), 3.96 (dp, J = 12.3, 1.9 Hz, 2H), 2.82-2,74 (m, 3H), 2.50-2.43 (m, 6H), 1.99 (dt, J = 13.1, 2.6 Hz, 2H), 1.83-1.68 (m, 2H). ES-MS [M + H]+ = 443
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.53 (s, 1H), 7.51 (s, 1H), 3.97 (dp, J = 12.0, 2.0 Hz, 2H), 3.74 (s, 3H), 2.75 (dddt, J = 12.3, 9.7, 6.5, 2.8 Hz, 3H), 2.48-2,41 (m, 6H), 2.01 (dt, J = 13.5, 2.6 Hz 2H), 1.85-1.70 (m, 2H). ES-MS [M + H]+ = 375
1H-NMR (400 MHz, CDCl3) δ 8.40 (dd, J = 6.5, 0.9 Hz, 1H), 8.29 (s, 1H), 7.38 (d, J = 9.9 Hz, 1H), 4.03 (dp, J = 11.8, 1.9 Hz, 2H), 3.85 (s, 3H), 2.87 (tt, = 12.2, 3.4 Hz, 1H), 2.65 (td., J = 12.2, 2.4 Hz, 2H), 2.44 (s, 3H), 2.07 (dt, J = 12.9, 2.7 Hz, 2H), 1.85 (qd, J = 12.6, 4.0 Hz, 2H). ES-MS [M + H]+ = 413
1H-NMR (400 MHz, CDCl3) δ 8.34 (dd, J = 6.6, 0.9 Hz, 1H), 8.23 (s, 1H), 7.65 (s, 1H), 7.31 (d, J = 9.9 Hz, 1H), 4.14 (t, J = 6.1 Hz, 2H), 3.89 (dp, J = 11.5, 1.9 Hz, 2H), 2.98 (t, J = 6.4 Hz, 2H), 2.76 (tt, J = 12.2, 3.4 Hz, 1H), 2.43 (td, J = 12.0, 2.4 Hz, 2H), 2.08-1.95 (m, 4H), 1.91-1.74 (m, 4H). ES-MS [M + H]+ = 405
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.25 (s, 1H), 7.72 (s, 1H), 7.54- 7.49 (m, 1H), 4.21 (t, J = 6.1 Hz, 2H), 3.95 (dp, J = 11,2, 1.9 Hz, 2H), 3.04 (t, J = 6.4 Hz, 2H), 2.72-2.58 (m, 1H), 2.47 (td, J = 11.9, 2.4 Hz, 2H), 2.42 (d, J = 1.0 Hz, 3H), 2.13-2.04 (m, 2H), 1.99 (dt, J = 12.8, 2.7 Hz, 2H), 1.96-1.74 (m, 4H). ES-MS [M + H]+ = 401
1H-NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 8.42 (s, 1H), 7.89 (s, 1H), 7.78 (s, 1H), 5.87 (tt, J = 3.4, 1.6 Hz, 1H), 4.23 (t, J = 6.1 Hz, 2H), 3.84 (q, J = 2.8 Hz, 2H), 3.40 (t, J = 5.6 Hz, 2H), 3.09 (t, J = 6.4 Hz, 2H), 2.63 (dq, J = 7.6, 4.6, 3.7 Hz, 2H), 2.11 (td, J = 8.4, 7.2, 4.5 Hz, 2H), 2.00-1.90 (m, 2H). ES-MS [M + H]+ = 419
1H-NMR (400 MHz, CDCl3) δ 7.84- 7.80 (m, 1H), 7.73 (s, 1H), 7.64 (m, 2H), 4.23 (t, = 7.4 Hz, 2H), 3.90 (dt, J = 11.3, 3.4 Hz, 2H), 3.15-3.07 (m, 2H), 2.86-2,74 (m, 1H), 2.74-2,64 (m, 2H), 2.47 (td, J = 11.9, 2.6 Hz, 2H), 2.34 (d, J = 1.1 Hz, 3H), 2.17-2.02 (m, 2H), 2.00- 1.90 (m, 2H). ES-MS [M + H]+ = 387
1H-NMR (400 MHz, CDCl3) δ 7.81 (t, J = 0.9 Hz, 1H), 7.66-7.60 (m, 2H), 7.08 (dd, 8.3, 2.2 Hz, 1H), 7.01 (d, J = 2.1 Hz, 1H), 6.86 (d, J = 8.3 Hz, 1H), 4.40- 4.31 (m, 2H), 3.92 (dt, J = 11.5, 3.3 Hz, 2H), 3.36-3.27 (m, 2H), 2.95 (s, 3H), 2.77 (tt, J = 11.6, 3.6 Hz, 1H), 2.45 (td, J = 12.0, 2.5 Hz, 2H), 2.32 (d, J = 1.1 Hz, 3H), 2.15-2.00 (m, 2H), 1.96-1.86 (m, 2H). ES-MS [M + H]+ = 428
1H-NMR (400 MHz, CDCl3) δ 7.82 (s, 1H), 7.70 (s, 1H), 7.64 (t, J = 1.4 Hz, 2H), 3.95-3.87 (m, 2H), 3.85 (s, 3H), 2.79 (tt, J = 11.5, 3.6 Hz, 1H), 2.52 (s, 3H), 2.47 (td, J = 11.9, 2.6 Hz, 2H), 2.34 (d, J = 1.1 Hz, 3H), 2.16-2.01 (m, 2H), 1.99-1.92 (m, 2H). ES-MS [M + H]+ = 375
1H-NMR (400 MHz, CDCl3) δ 8.40 (d, J = 6.5 Hz, 1H), 8.29 (s, 1H), 7.45 (s, 1H), 7.38 (d, J = 9.8 Hz, 1H), 5.45 (s, 1H) 4.12 (t, J = 6.1 Hz, 2H), 3.89 (dp, J = 11.3, 1.9 Hz, 2H), 3.39 (td, J = 5.5, 2.0 Hz, 2H), 2.90-2,75 (m, 1H), 2.53 (td, J = 12.1, 2.4 Hz, 2H), 2.19 (p, J = 5.9 Hz, 2H), 2.06 (dt, J = 13.0, 2.6 Hz, 2H), 1.86 (qd, J = 12.6, 4.1 Hz, 2H). ES-MS [M + H]+ = 406
1H-NMR (400 MHz, CDCl3) δ 8.40 (d, J = 6.5 Hz, 1H), 8.30 (s, 1H), 7.80 (s, 1H), 7.38 (d, J = 9.9 Hz, 1H), 4.08-3.97 (m, 2H), 3.93 (s, 3H), 2.86 (tt, J = 12.4, 3.5 Hz, 1H), 2.60 (td, J = 12.2, 2.4 Hz, 2H), 2.12-1.99 (m, 2H), 1.87 (qd, J = 12.6, 4.1 Hz, 2H). ES-MS [M + H]+ = 399
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.79 (d, J = 6.5 Hz, 1H), 7.53 (q, J = 1.1 Hz, 1H), 4.03 (dp, J = 1.8, 1.9 Hz, 2H), 2.78-2,52 (m, 3H), 2.42 (dd, J = 4.5, 1.0 Hz, 3H), 2.05-1.95 (m, 2H), 1.89-1.74 (m, 2H). ES-MS [M + H]+ = 398
1H-NMR (400 MHz, CDCl3) 6 8.36 (s, 1H), 8.25 (s, 1H), 7.79 (d, J = 6.5 Hz, 1H), 7.53 (q, J = 1.1 Hz, 1H), 4.03 (dp, J J = 11.8, 1.9 Hz, 2H), 2.78-2.52 (m, 3H), 2.42 (dd, J = 4.5. 1.0 Hz. 3H), 2.05-1.95 (m, 2H), 1.89-1.74 (m, 2H). ES-MS [M + H]+ = 398
1H-NMR (400 MHz, CDCl3) δ 8.40 (dd, J = 6.4, 0.9 Hz, 1H), 8.29 (s, 1H), 7.38 (d, J = 9.9 Hz, 1H), 4.02 (dp, J = 12.0, 2.0 Hz, 2H), 2.88 (tt, J = 12.3, 3.5 Hz, 1H), 2.69 (td, J = 12.2, 2.4 Hz, 2H), 2.53 (s, 3H), 2.06 (dt, J = 12.4, 2.7 Hz, 2H), 1.85 (qd, J = 12.6, 4.1 Hz, 2H). ES-MS [M + H]+ = 416
1H-NMR (400 MHz, CDCl3) δ 8.33 (dd, J = 6.6. 0.9 Hz, 1H), 8.23 (s, 1H), 7.74 (s, 1H), 7.32 (d, J = 9.9 Hz, 1H), 4.01-3.93 (m, 2H), 2.79 (tt, J = 12.3, 3.5 Hz, 1H), 2.54 (td, J = 12.1, 2.5 Hz, 2H), 2.02 (s, 2H), 1.81 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 402
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.26 (s, 1H), 7.53 (t, J = 1.0 Hz, 1H), 4.02 (dp, J = 11.5, 2.1 Hz, 2H), 2.78- 2.57 (m, 3H), 2.53 (s, 2H), 2.44 (s, 1H), 2.43 (s, 3H), 2.04-1.94 (m, 2H), 1.88- 1.73 (m, 2H). ES-MS [M + H]+ = 412
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.26 (s, 1H), 7.54 (s, 1H), 7.45 (s, 1H), 5.47 (s, 1H), 4.13 (t, J = 6.1 Hz, 2H), 3.93-3.84 (m, 2H), 3.39 (t, J = 5.6 Hz, 2H), 2.74-2,62 (m, 1H), 2.51 (td, J = 12.0, 2.4 Hz, 2H), 2.43 (s, 3H), 2.19 (q, J = 5.8 Hz, 2H), 1.99 (dt, J = 13.2, 2.6 Hz, 2H), 1.89-1.75 (m, 2H). ES-MS [M + H]+ = 402
1H-NMR (400 MHz, CDCl3) δ 8.65 (s, 1H), 8.46 (s, 1H), 8.13 (t, J = 0.9 Hz, 1H), 7.52 (s, 1H), 4.04-3.95 (m, 2H), 3.76 (s, 3H), 2.99 (t, J = 12.0 Hz, 1H) 2.72 (td, J = 12.4, 2.4 Hz, 2H), 2.47 (s, 3H), 2.07 (d, J = 2.6 Hz, 2H), 1.87 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 429
1H-NMR (400 MHz, CDCl3) δ 8.63 (s, 1H), 8.45 (s, 1H), 8.12 (d, J = 1.1 Hz, 1H), 6.84 (q, J = 1.2 Hz, 1H), 4.00 (dp, J = 11.8, 1.9 Hz, 2H), 2.98-2,87 (m, 1H), 2.67 (s, 3H), 2.56 (td, J = 12.1, 2.4 Hz, 2H), 2.47-2,42 (m, 3H), 2.07 (d, J = 3.1 Hz, 2H), 1.87 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 445
1H-NMR (400 MHz, CDCl3) δ 8.41 (dt, J = 1.7, 0.8 Hz, 1H), 8.32 (s, 1H), 7.77- 7.70 (m, 2H), 7.40 (dd, J = 9.2, 1.8 Hz, 1H), 4.24 (t, J = 7.4 Hz, 2H), 3.94 (dp, J = 11.3, 19 Hz, 2H), 3.16-3.07 (m, 2H), 2.71 (tt, J = 8.3, 6.8 Hz, 2H), 2.59 (tt, J = 12.1, 3.8 Hz, 1H), 2.46 (td, J = 11.9, 2.6 Hz, 2H), 2.06-1.98 (m, 2H), 1.98-1.85 (m, 2H). ES-MS [M + H]+ = 373
1H-NMR (400 MHz, CDCl3) δ 8.42 (dt, J = 1.7, 0.8 Hz, 1H), 8.32 (s, 1H), 7.74 (dd, J = 9.2, 0.9 Hz, 1H), 7.52 (s, 1H), 7.41 (dd, = 9.2, 1.8 Hz, 1H), 3.98 (dp, J = 12.2, 2.0 Hz, 2H), 3.75 (s, 3H), 2.82- 2.64 (m, 3H), 2.47 (s, 3H), 2.09-1.99 (m, 2H), 1.92-1.77 (m, 2H). ES-MS [M + H]+ = 361
1H-NMR (400 MHz, CDCl3) δ 8.39- 8.28 (m, 2H), 8.25 (s, 1H), 7.97 (dt, J = 8.7, 0.9 Hz, 1H), 7.59 (dd, J = 7.1, 0.8 Hz, 1H), 7.53-7.47 (m, 1H), 7.42 (dd, J = 8.7, 7.1 Hz, 1H), 4.29 (s, 3H), 4.06 (dp, J = 11.7, 1.9 Hz, 2H), 2.58 (tt, J = 12.1, 3.3 Hz, 1H), 2.45 (td, J = 12.1, 2.4 Hz, 2H), 2.35 (d, J = 1.0 Hz, 3H), 1.95 (dt, J = 13.0, 2.6 Hz, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.35 (s, 1H), 7.87 (s, 1H), 7.80 (s, 1H), 4.05 (dp, J = 11.7, 2.0 Hz, 2H), 3.93 (s, 3H) 2.99 (tt, J = 12.2, 3.3 Hz, 1H), 2.61 (td, J = 12.2, 2.3 Hz, 2H), 2.13 (dt, J = 12.9, 2.6 Hz, 2H), 1.81 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 415.
1H-NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.35 (s, 1H), 7.87 (s, 1H), 7.74 (s, 1H), 4.25 (t, J = 7.4 Hz, 2H), 4.02-3.92 (m, 2H), 3.12 (t, J = 7.5 Hz, 2H), 2.95 (tt, J = 12.2, 3.3 Hz, 1H), 2.78-2,66 (m, 2H), 2.48 (td, J = 12.0, 2.3 Hz, 2H), 2.12 (dt, J = 13.0, 2.6 Hz, 2H), 1.84 (tt, J = 12.4, 6.2 Hz, 2H). ES-MS [M + H]+ = 407
1H NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.36 (s, 1H), 8.04 (s, 1H), 7.90 (s, 1H), 4.03 (dp, J = 11.6, 1.9 Hz, 2H), 2.99 (tt, J = 12.2, 3.3 Hz, 1H), 2.81 (s, 3H), 2.59 (td, J = 12.1, 2.4 Hz, 2H), 2.20- 2.10 (m, 2H), 1.84 (qd, J = 12.6, 4.0 Hz, 2H). ES-MS [M + H]+ = 398
1H-NMR (400 MHz, CDCl3) δ 8.42 (s, 1H), 8.33 (s, 1H), 7.74 (s, 1H), 7.65 (s, 1H), 4.25 (t, J = 7.4 Hz, 2H), 3.96 (dt, J = 11.0, 2.2 Hz, 2H), 3.16-3.08 (m, 2H), 2.73 (h, J = 7.3 Hz, 5H), 2.45 (td, J = 11.9, 2.5 Hz, 2H), 2.01 (d, J = 3.2 Hz, 2H), 1.95-1.81 (m, 2H), 1.31 (t, J = 7.4 Hz, 3H). ES-MS [M + H]+ = 401
1H-NMR (400 MHz, CDCl3) δ 8.45 (d, J = 5.7 Hz, 2H), 8.04 (s, 1H), 7.81 (s, 1H), 4.08-4.00 (m, 2H), 2.81-2,76 (m, 6H), 2.57 (td, J = 12.1, 2.4 Hz, 2H), 2.05 (s, 2H), 1.90 (qd, J = 12.5, 4.0 Hz, 2H), 1.33 (t, J = 7.4 Hz, 3H). ES-MS [M + H]+ = 392
1H-NMR (400 MHz, CDCl3) δ 8.29 (s, 1H), 8.25 (s, 1H), 7.74 (d, J = 1.1 Hz, 1H), 7.28 (s, 1H), 4.14 (d, J = 1.1 Hz, 3H), 3.96 (dp, J = 11.6, 1.9 Hz, 2H), 2.68 (tt, J = 12.2, 3.3 Hz, 1H), 2.46 (td, J = 12.0, 2.4 Hz, 2H), 2.34 (d, J = 2.9 Hz, 3H), 2.03 (dt, J = 13.3, 2.5 Hz, 2H), 1.93-1.78 (m, 2H). ES-MS [M + H]+ = 429
1H-NMR (400 MHz, CDCl3) δ 8.63 (s, 1H), 8.25 (s, 1H), 7.53-7.45 (m, 1H), 7.40 (s, 1H), 3.82-3.75 (m, 2H), 3.73 (s, 3H), 3.15 (td, J = 12.3, 2.5 Hz, 2H), 3.03 (d, J = 2.4 Hz, 1H), 2.73 (d, J = 1.0 Hz, 3H), 2.42 (s, 3H), 2.28 (td, J = 13.1, 4.6 Hz, 2H), 2.14-2.05 (m, 2H). ES-MS [M + H]+ = 391
1H-NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.41 (s, 1H), 7.70 (s, 1H), 3.98 (dp, J = 11.5, 1.9 Hz, 2H), 3.86 (s, 3H), 2.68 (s, 4H), 2.53 (s, 3H), 2.47 (td, J = 12.0, 2.4 Hz, 2H), 2.04 (dt, J = 13.2, 2.6 Hz, 2H), 1.92-1.77 (m, 2H). ES-MS [M + H]+ = 376
1H-NMR (400 MHz, CDCl3) δ 8.57 (s, 1H), 8.41 (s, 1H), 7.81 (s, 1H), 4.06 (dp, J = 11.8, 2.0 Hz, 2H), 3.93 (s, 3H), 2.77 (tt, J = 12.2, 3.4 Hz, 1H), 2.69 (s, 3H), 2.64-2.56 (m, 2H), 2.05 (dp, J = 12.9, 2.5 Hz, 2H), 1.94-1.76 (m, 2H). ES-MS [M + H]+ = 396
1H-NMR (400 MHz, CDCl3) δ 8,22 (s, 1H), 8.18 (s, 1H), 4.06-3.91 (m, 2H), 2,72-2.54 (m, 3H), 2.47 (s, 3H), 2.29 (d, J = 2.9 Hz, 3H), 1.92 (d, J = 3.1 Hz, 2H), 1.75 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 430
1H-NMR (400 MHz, CDCl3) δ 8.34 (s, 1H), 8.23 (s, 1H), 7.50 (t, J = 1,0 Hz, 1H), 7.38 (s, 1H), 4.03 (dp, J = 12.3, 1.9 Hz, 2H), 3.64 (s, 3H), 2.82-2,65 (m, 3H), 2.45-2,39 (m, 6H), 1.98-1.88 (m, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 375
1H-NMR (400 MHz, CDCl3) δ 8.35 (s, 1H), 8.25 (s, 1H), 7.56 (s, 1H), 7.53- 7.48 (m, 1H), 4.11 (dp, J = 12.2, 1.9 Hz, 2H), 3.69 (s, 3H), 2.84 (td, J = 12.4, 2.5 Hz, 2H), 2.73 (tt, J = 12.1, 3.3 Hz, 1H), 2.42 (d, J = 1.0 Hz, 3H), 1.96 (dt, J = 13.6, 2.3 Hz, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 395
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.25 (s, 1H), 7.58-7.51 (m, 2H), 4.17 (t, J = 6.0 Hz, 2H), 3.97 (dp, J = 12.1, 1.9 Hz, 2H), 2.96 (t, J = 6.4 Hz, 2H), 2.83-2,69 (m, 3H), 2.45 (s, 3H), 2.09-1.98 (m, 4H), 1.96 (qd, J = 6.2, 2.2 Hz, 2H), 1.86-1.71 (m, 2H). ES-MS [M + H]+ = 401
1H-NMR (400 MHz, CDCl3) δ 8.76 (dt, J = 7.0, 1.2 Hz, 1H), 8.32 (s, 1H), 8.25 (s, 1H), 8.16 (s, 1H), 7.79 (dt, J = 9.1, 1.2 Hz, 1H), 7.53-7.49 (m, 1H), 7.49-7.43 (m, 1H), 7.08 (td, J = 6.9, 1.2 Hz, 1H), 4.05 (dp, J = 11.8, 1.9 Hz, 2H), 2.75- 2.58 (m, 3H), 2.39 (d, J = 1.0 Hz, 3H), 1.99 (dt, J = 13.3, 2.8 Hz, 2H), 1.84- 1.69 (m, 2H). ES-MS [M + H]+ = 397.
1H-NMR (400 MHz, CDCl3) δ 8.35 (s, 1H), 8.25 (s, 1H), 7.95 (d,-J 4.5 Hz, 1H), 7.52 (t, J = 1.0 Hz, 1H), 7.09 (d, J = 4.5 Hz, 1H), 4.09 (dp, J = 11.9, 2.0 Hz, 2H), 2.76 (qd, J = 12.2, 5.6 Hz, 3H), 2.42 (d, J = 1.0 Hz, 3H), 2.02 (dt, J = 13.6, 2.5 Hz, 2H), 1.89-1.74 (m, 2H). ES-MS [M + H]+ = 437
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.52 (t, J = 1.0 Hz, HI), 4.02 (dp, J = 11.9, 1.9 Hz, 2H), 3.81 (s, 3H), 2.79-2,61 (m, 3H), 2.54 (s, 3H), 2.43 (d, J = 1.0 Hz, 3H), 2.00 (dt, J = 13.0, 2.6 Hz, 2H), 1.89-1.74 (m, 2H) ES-MS [M + H]+ = 409
1H-NMR (400 MHz, CDCl3) δ 8.41 (s, 1H), 8.29 (s, 1H), 7.58 (s, 1H), 4.05 (dp, J = 12.1, 19 Hz, 2H), 3.84 (s, 3H), 2.84- 2.61 (m, 5H), 2.56 (s, 3H), 2.05-1.98 (m, 2H), 1.93-1.78 (m, 2H), 1.33 (t, J = 7.4 Hz, 3H). ES-MS [M + H]+ = 423.
1H-NMR (400 MHz, CDCl3) δ 8.76 (dt, J = 6.9, 1.2 Hz, 1H), 8.61 (s, 1H), 8.45 (s, 1H), 8.17 (s, 1H), 8.11 (s, 1H), 7.80 (dt, J = 9.2, 1.2 Hz, 1H), 7.48 (ddd, J = 9.2, 6.8, 1.3 Hz, 1H), 7.08 (td, J = 6.9, 1.2 Hz, 1H), 4.07 (dp, J = 12.1, 2.0 Hz, 2H), 2.97- 2.86 (m, 1H), 2.66 (td, J = 12.3, 2.4 Hz, 2H), 2.06 (dt, J = 13.2, 2.9 Hz, 2H), 1.85 (qd, J = 12.6, 4.0 Hz, 2H). ES-MS [M + H]+ = 451
1H NMR (400 MHz, CDCl3) δ 8.64 (s, 1H), 8.46 (s, 1H), 8.12 (s, 1H), 7.95 (d, J = 4.5 Hz, 1H), 7.09 (d, J = 4.5 Hz, 1H), 4.10 (dp, J = 12.2, 2.0 Hz, 2H), 2.97 (t, J = 12.2 Hz, 1H), 2.77 (td, J = 12.2, 2.4 Hz, 2H), 2.13-2.04 (m, 2H), 1.88 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 491
1H-NMR (400 MHz, CDCl3) δ 8.29 (s, 1H), 8.24 (s, 1H), 7.90-7.85 (m, 1H), 4.12 (q, J = 1.5 Hz, 3H), 4.01 (d, J = 12.5 Hz, 2H), 2.83-2,66 (m, 3H), 2.37 (d, J = 3.0 Hz, 3H), 2.03 (s, 2H), 1.86-1.73 (m, 2H). ES-MS [M + H]+ = 447
1H-NMR (400 MHz, CDCl3) δ 7.82 (s, 1H), 6.81 (s, 1H), 6.57 (s, 1H), 5.97 (s, 2H), 5.60 (tt, J = 3.3, 1.7 Hz, 1H), 3.91 (s, 3H), 3.85 (q, J = 2.8 Hz, 2H), 3.42 (t, J = 5.6 Hz, 2H), 2.49 (tdd, J = 5.7, 4.7, 2.9, 1.4 Hz, 2H). ES-MS [M + H]+ = 416
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.77 (s, 1H), 7.52 (s, 1H), 3.86 (s, 3H), 2.61-2,69 (m, 1H), 2.52 (s, 3H), 2.41 (s, 3H), 1.98 (dd, J = 13.5, 3.3 Hz, 2H), 1.81 (dd, J = 12.6, 12.6 Hz, 2H). ES-MS [M + H]+ = 379
1H-NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.77 (s, 1H), 7.52 (s, 1H), 3.93 (s, 3H), 2.61-2,69 (m, 1H), 2.42 (s, 3H), 1.99 (dd, J = 13.5, 3.3 Hz, 2H), 1.81 (dd, J = 12.6, 12.6 Hz, 2H). ES-MS [M + H]+ = 399
1H-NMR (400 MHz, CDCl3) δ 7.73 (s, 1H), 6.68 (s, 1H), 6.62 (s, 1H), 5.89 (s, 2H), 4.24 (t, J = 7.4 Hz, 2H), 3.94-3.85 (m, 2H), 3.11 (dd, J = 8.0, 6.9 Hz, 2H), 2.70 (tt, J = 8.4, 6.8 Hz, 2H), 2.59 (ddd, J = 15.6, 8.9, 6.0 Hz, 1H), 2.38 (ddd, J = 11.4, 8.9, 6.2 Hz, 2H), 2.19 (s, 3H), 1.79 (tt, J = 7.0, 3.6 Hz, 4H). ES-MS [M + H]+ = 390
1H-NMR (400 MHz, CDCl3) δ 7.71 (s, 1H), 6.58 (s, 1H), 6.51 (s, 1H), 5.60 (tt, J = 3.4, 1.6 Hz, 1H), 4.29-4.22 (m, 2H), 3.84 (s, 3H), 3.73 (q, J = 2.8 Hz, 2H), 3.32-3.21 (m, 4H), 2.86 (s, 3H), 2.52 (s, 5H). ES-MS [M + H]+ = 423
1H-NMR (400 MHz, CDCl3) δ 8.46 (s, 1H), 8.34 (s, 1H), 7.70 (s, 1H), 7.60 (q, J = 1.9 Hz, 1H), 4.01-3.91 (m, 2H), 3.87 (s, 3H), 2.83 (tt, J = 12.3, 3.4 Hz, 1H), 2.53 (s, 3H), 2.45 (td, J = 12.0, 2.4 Hz, 2H), 2.05 (dt, J = 12.6, 2.7 Hz, 2H), 1.91- 1.76 (m, 2H). ES-MS [M + H]+ = 445
1H-NMR (400 MHz, CDCl3) δ 8.35- 8.28 (m, 2H), 7.73 (s, 1H), 6.09 (dt, J = 3.5, 1.9 Hz, 1H), 3.84 (d, J = 14.9 Hz, 5H), 3.36 (t, J = 5.6 Hz, 2H), 2.68-2.60 (m, 2H), 2.54 (s, 3H). ES-MS [M + H]+ = 395
1H NMR (400 MHz, CDCl3) δ 7.69 (s, 1H), 6.67 (s, 1H), 6.64 (d, J = 0.8 Hz, 1H), 3.93-3.84 (m, 5H), 2.51 (s, 4H), 2.37 (td, J = 11.4, 3.5 Hz, 2H), 2.16 (d, J = 0.6 Hz, 3H), 1.83-1.70 (m, 4H). ES-MS [M + H]+ = 396
1H-NMR (400 MHz, CDCl3) δ 8.50 (s, 1H), 7.65-7.56 (m, 2H), 7.43 (s, 1H), 6.89 (d, J = 8.4 Hz, 1H), 4.71 (t, J = 8.8 Hz, 2H), 4.07-3.93 (m, 2H), 3.30 (t, J = 8.8 Hz, 2H), 2.70 (tt, J = 12.0, 3.7 Hz, 1H), 2.45-2,34 (m, 5H), 2.02-1.81 (m, 4H). ES-MS [M + H]+ = 427
1H-NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.27 (s, 1H), 7.85 (s, 1H), 7.54 (t, J = 1.0 Hz, 1H), 4.16 (s, 3H), 4.08 (dp, J = 11.7, 1.9 Hz, 2H), 2.72 (tt, J = 12.2, 3.3 Hz, 1H), 2.60 (td, J = 12.1, 2.4 Hz, 2H), 2.43 (d, J = 1.0 Hz, 3H), 2.04 (dt, J = 13.1, 2.5 Hz, 2H), 1.92-1.80 (m, 2H). ES-MS [M + H]+ = 386
1H-NMR (400 MHz, CDCl3) δ 8.41 (d, J = 6.5 Hz, 1H), 8.30 (s, 1H), 7.85 (s, 1H), 7.39 (d, J = 9.9 Hz, 1H), 4.16 (s, 3H), 4.08 (dp, J = 11.8, 1.9 Hz, 2H), 2.87 (tt, J = 12.2, 3.4 Hz, 1H), 2.62 (td, J = 12.2, 2.5 Hz, 2H), 2.15-2.06 (m, 2H), 1.91 (qd, J = 12.6, 4.1 Hz, 2H). ES-MS [M + H]+ = 390
1H-NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.33 (s, 1H), 7.85 (s, 1H), 7.82 (d, J = 0.6 Hz, 1H) 4.16 (s, 3H), 4.13-4.05 (m, 2H), 3.00 (tt, J = 12.3, 3.3 Hz, 1H), 2.62 (td, J = 12.1, 2.4 Hz, 2H), 2.15 (d, J = 3.0 Hz, 2H), 1.84 (qd, J = 12.6, 4.0 Hz, 2H). ES-MS [M + H]+ = 406
1H-NMR (400 MHz, CDCl3) δ 8.83 (dd, J = 4.3, 1.7 Hz, 1H), 8.08 (ddd, J = 8.3, 1.8, 0.8 Hz, 1H), 7.88 (s, 1H), 7.81 (s, 1H), 7.59 (s, 1H), 7.33 (dd, J = 8.2, 4.2 Hz, 1H), 4.09-3.99 (m, 2H), 3.94 (s, 3H), 2.83 (tt, J = 10.1, 5.2 Hz, 1H), 2.66-2.53 (m, 2H), 2.51 (d, J = 0.9 Hz, 3H), 2.03- 1.87 (m, 4H). ES-MS [M + H]+ = 405
1H-NMR (400 MHz, CDCl3) δ 8.59- 8.54 (m, 1H), 8.30 (s, 1H), 7.81 (s, 1H), 7.56 (q, J = 0.9 Hz, 1H), 3.94 (s, 5H), 3.00-2,88 (m, 2H), 2.60 (dd, J = 2.7, 1.0 Hz, 3H), 2.46-2,33 (m, 1H), 2.33-2.24 (m, 3H). ES-MS [M + H]+ = 413
1H-NMR (400 MHz, CDCl3) δ 8.60- 8.53 (m, 1H), 8.30 (s, 1H), 7.61 (s, 1H), 7.56 (q, J = 0.9 Hz, 1H), 4.50-4,43 (m, 2H), 4.23 (t, J = 6.2 Hz, 2H), 3.84 (ddt, J = 11.6, 4.3, 1.8 Hz, 2H), 2.88 (td, J = 12.0, 2.6 Hz, 2H), 2.61 (dd, J = 2.6, 1.0 Hz, 3H), 2.47-2,20 (m, 6H). ES-MS [M + H]+ = 421
1H-NMR (400 MHz, CDCl3) δ 8.77 (s, 2H), 7.91-7.86 (m, 2H), 7.82 (s, 1H), 4.05 (dd, J = 10.0, 5.8 Hz, 2H), 3.94 (s, 3H), 2.85 (tt, J = 10.0, 5.0 Hz, 1H), 2.62 (td, J = 11.5, 4.2. Hz, 2H), 2.55 (d, J = 0.9 Hz, 3H), 2.03-1.94 (m, 4H). ES-MS [M + H]+ = 406
1H-NMR (400 MHz, CDCl3) δ 8.76 (s, 1H), 8.06 (dd, J = 8.4, 1.1 Hz, 1H), 7.88 (s, 1H), 7.72-7.60 (m, 2H), 7.49 (ddd, J = 8.2, 6.9, 1.3 Hz, 1H), 5.68 (tt, J = 3.3, 1.7 Hz, 1H), 3.97 (d, J = 9.4 Hz, 5H), 3.55 (t, J = 5.6 Hz, 2H), 2.56-2.39 (m, 2H), 2.36 (s, 3H). ES-MS [M + H]+ = 403
1H-NMR (400 MHz, CDCl3) δ 7.72 (d, J = 1.6 Hz, 2H), 7.62-7.60 (m, 1H), 7.58 (d, J = 1.3 Hz, 1H), 3.86 (s, 3H), 3.32- 3.25 (m, 4H), 3.24-3.17 (m, 4H), 2.53 (s, 3H), 2.30 (d, J = 1.1 Hz, 3H). ES-MS [M + H]+ = 376
1H-NMR (400 MHz, CDCl3) δ 7.76 (s, 1H), 7.72 (s, 1H), 7.61 (t, J = 0.9 Hz, 1H), 7.58 (d, J = 1.2 Hz, 1H), 4.25 (t, J = 7.4 Hz, 2H), 3.33-3.26 (m, 4H), 3.24- 3.17 (m, 4H), 3.13 (t, J = 7.5 Hz, 2H), 2.72 (p, J = 7.5 Hz, 2H), 2.30 (d, J = 1.1 Hz, 3H). ES-MS [M + H]+ = 388
1H-NMR (400 MHz, CDCl3) δ 8.31 (s, 1H), 8.28 (s, 1H), 7.81 (s, 1H), 4.23 (s, 2H), 4.07 (s, 3H), 4.02 (d, J = 11.6 Hz, 2H), 2.80-2,68 (m, 1H), 2.59 (td, J = 12.0, 2.4 Hz, 2H), 2.37 (d, J = 2.9 Hz, 3H), 2.09-2.05 (m, 2H),1.89 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 418
1H-NMR (400 MHz, CDCl3) δ 8.37 (s, 1H), 8.26 (s, 1H), 7.73 (s, 1H), 7.55- 7.50 (m, 1H), 4.70 (s, 2H), 3.99-3.89 (m, 5H), 2.66 (tq, J = 11.3, 4.6, 4.0 Hz, 1H), 2.43 (dd, J = 14.4, 1.7 Hz, 5H), 1.99 (dt, J = 13.3, 2.7 Hz, 2H), 1.86-1.75 (m, 2H). ES-MS [M + H]+ = 408
1H-NMR (400 MHz, CDCl3) δ 8.82 (dd, J = 7.0, 1.8 Hz, 1H), 8.78 (dd, J = 4.2, 1.8 Hz, 1H), 8.44 (s, 1H), 8.34 (s, 1H), 8.23 (s, 1H), 7.48 (t, J = 1.0 Hz, 1H), 7.13 (dd, J = 7.0, 4.2 Hz, 1H), 4.17 (dp, J = 11.9, 1.9 Hz, 2H), 2.69-2.56 (m, 3H), 2.37 (d, J = 1.0 Hz, 3H), 1.98 (dt, J = 12.7, 2.6 Hz, 2H), 1.89-1.77 (m, 2H). ES-MS [M + H]+ = 398
1H-NMR (400 MHz, CDCl3) δ 8.25 (s, 1H), 7.86 (d, J = 2.3 Hz, 1H), 7.70 (s, 1H), 7.28 (s, 1H), 6.34 (dd, J = 2.3, 0.8 Hz, 1H), 3.98-3.88 (m, 2H), 3.86 (s, 3H), 2.58 (tt, J = 12.1, 3.3 Hz, 1H), 2.52 (s, 3H), 2.43 (td, J = 11.9, 2.5 Hz, 2H), 2.30 (d, J = 10 Hz, 3H), 2.02-1.92 (m, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 374
1H-NMR (400 MHz, CDCl3) δ 8.27 (s, 1H), 7.87 (d, J = 2.3 Hz, 1H), 7.78 (s, 1H), 7.31-7.26 (m, 1H), 6.34 (dd, J = 2.3, 0.8 Hz, 1H), 4.21 (s, 2H), 4.04 (s, 3H), 3.97 (dt, J = 11.1, 3.2 Hz, 2H), 2.62 (tt, J = 12.1, 3.3 Hz, 1H), 2.52 (td, J = 12.0, 2.4 Hz, 2H), 2.31 (d, J = 1.1 Hz, 3H), 2.06-1.97 (m, 2H), 1.92-1.77 (m, 2H). ES-MS [M + H]+ = 399
1H-NMR (400 MHz, CDCl3) δ 8.59 (s, 1H), 8.41 (s, 1H), 7.91 (s, 1H), 7.70 (s, 1H), 6.76 (t, J = 55.0 Hz, 1H), 4.00-3.92 (m, 2H), 3.87 (s, 3H), 2.93-2,82 (m, 1H), 2.53 (s, 3H), 2.43 (td, J = 12.0, 2.4 Hz, 2H), 2.11-2.02 (m, 2H), 1.90 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, CDCl3) δ 7.67 (s, 1H), 3.89 (dp, J = 11.4, 1.9 Hz, 2H), 3.84 (s, 3H), 3.73 (t, J = 5.9 Hz, 2H), 2.80 (t, J = 6.4 Hz, 2H), 2.50 (s, 3H), 2.48-2,41 (m, 1H), 2.33 (td, J = 11.9, 2.5 Hz, 2H), 2.18 (s, 3H), 2.10-1.94 (m, 4H), 1.87- 1.74 (m, 4H). ES-MS [M + H]+ = 378
1H-NMR (400 MHz, CDCl3) δ 7.76 (s, 1H), 4.19 (s, 2H), 4.03 (s, 3H), 3.92 (d, J = 11.1 Hz, 2H), 3.75 (t, J = 5.9 Hz, 2H), 2.86 (t, J = 6.3 Hz, 2H), 2.57-2.39 (m, 3H), 2.23 (s, 3H), 2.13-1.88 (m, 8H). ES-MS [M + H]+ = 403
1H-NMR (400 MHz, CDCl3) δ 8,33 (s, 2H), 7,86 (s, 1H), 7.66-7.61 (m, 1H), 4.07 (t, J = 2.7 Hz, 2H), 3.95 (s, 3H), 3.52 (s, 2H), 2.67-2.61 (m, 2H), 2.36 (d, J = 1.0 Hz, 3H). ES-MS [M + H]+ = 418
1H-NMR (400 MHz, CDCl3) δ 8.53 (d, J = 0.8 Hz, 1H), 8.37 (s, 1H), 7.67 (s, 1H), 7.56 (d, J = 0.8 Hz, 1H), 3.87 (s, 5H), 3.15 (s, 3H), 2.93 (s, 3H), 2.66 (ddd, J = 15.6, 12.1, 3.6 Hz, 1H), 2.51 (s, 3H), 2.36 (td, J = 11.8, 2.7 Hz, 2H), 2.08-2.01 (m, 2H), 1.86 (tt, J = 13.1, 6.5 Hz, 2H). ES-MS [M + H]+ = 432
1H-NMR (400 MHz, CDCl3) δ 8.49 (d, J = 0.7 Hz, 1H), 8.29 (s, 1H), 7.73 (d, J = 0.7 Hz, 1H), 7.69 (s, 1H), 3.92 (d, J = 11.4 Hz, 2H), 3.87 (s, 3H), 3.61 (tt, J = 12.2, 3.6 Hz, 1H), 2.52 (s, 3H), 2.39 (td, J = 11.9, 2.5 Hz, 2H), 2.09-1.98 (m, 2H), 1.95 (d, J = 0.8 Hz, 1H), 1.87 (qd, J = 12.4, 4.0 Hz, 2H), 1.70 (s, 6H). ES-MS [M + H]+ = 419
1H-NMR (400 MHz, CDCl3) δ 8.40 (d, J = 6.5 Hz, 1H), 8.30 (s, 1H), 7.74 (d, J = 1.1 Hz, 1H), 7.39 (d, J = 9.9 Hz, 1H), 7.28 (t, J = 55.0 Hz, 1H), 4.14 (t, J = 1.0 Hz, 3H), 2.89-2,77 (m, 1H), 2.12-2.04 (m, 2H), 1.88 (t, J = 12.7 Hz, 2H). ES-MS [M + H]+ = 419
1H-NMR (400 MHz, DMSO-d6) δ 8.98 (s, 1H), 8.59 (s, 1H), 8.15 (d, J = 0.7 Hz, 1H), 7.71 (s, 1H), 3.82 (s, 3H), 3.73 (d, J J = 11.2 Hz, 2H), 3.18-3.16 (m, 1H), 2.46 (s, 3H), 2.31-2,21 (m, 2H), 2.00-1.92 (m, 2H), 1.86 (td, J = 12.3, 3.8 Hz, 2H). ES-MS [M + H]+ = 405
1H NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.33 (s, 1H), 7.82 (s, 1H), 7.35 (s, 1H), 7.26 (s, 1H), 4.04 (dt, J = 11.6, 2.3 Hz, 2H), 2.98 (tt, J = 12.2, 3.2 Hz, 1H), 2.58 (s, 4H), 2.16 (dt, J = 13.1, 2.6 Hz, 2H), 1.91-1.79 (m, 2H). ES-MS [M + H]+ = 398
1H NMR (400 MHz, CDCl3) δ 8.43 (s, 1H), 8.33 (s, 1H), 7.83 (d, J = 0.7 Hz, 1H), 7.52 (s, 1H), 4.08 (dp, J = 12.3, 2.0 Hz, 2H), 3.04 (ddd, J = 12.2, 9.0, 3.3 Hz, 1H), 2.80 (td, J = 12.4, 2.4 Hz, 2H), 2.59 (s, 3H), 2.15 (dtd, J = 15.3, 4.9, 4.0, 2.4 Hz, 2H), 1.85-1.72 (m, 2H). ES-MS [M + H]+ = 382
1H NMR (400 MHz, CDCl3) δ 8.28 (d, J = 12.0 Hz, 2H), 7.35 (s, 1H), 4.04 (d, J = 11.6 Hz, 2H), 2.71 (dd, J = 14.3, 10.2 Hz, 1H), 2.60-2.50 (m, 5H), 2.38-2,27 (m, 3H), 2.05 (d, J = 13.1 Hz, 2H), 1.88 (qd, J = 12.6, 3.9 Hz, 2H). ES-MS [M + H]+ = 396
1H NMR (400 MHz, CDCl3) δ 8.31 (s, 1H), 8.27 (s, 1H), 7.54 (s, 1H), 4.10 (dq, J = 12.2, 2.1 Hz, 2H), 2.80 (td. J = 12.4, 2.5 Hz, 3H), 2.61 (s, 3H), 2.39 (d, J = 2.9 Hz, 3H), 2.06 (dt, J = 14.7, 2.4 Hz, 2H), 1.91-1.76 (m, 2H). ES-MS [M + H]+ = 380
1H NMR (400 MHz, CDCl3) δ 7.79 (s, 1H), 7.57 (dt, J = 8.7, 0.9 Hz, 1H), 7.39 (dt, J = 8.5, 1.0 Hz, 1H), 7.24-7.15 (m, 1H), 6.97 (ddd, J = 8.5, 6.6, 0.9 Hz, 1H), 5.90 (dq, J = 3.3, 1.7 Hz, 1H), 4.03 (s, 3H), 3.91 (q, J = 2.9 Hz, 2H), 3.86 (s, 3H), 3.45 (t, J = 5.6 Hz, 2H), 2.62 (dqd, J = 5.8, 2.9, 2.0 Hz, 2H). ES-MS [M + H]+ = 392
1H NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.26 (s, 1H), 7.53 (t, J = 1.0 Hz, 1H), 7.51 (s, 1H), 4.07 (dp, J = 12.2, 2.0 Hz, 2H), 2.81-2.72 (m, 3H), 2.58 (s, 3H), 2.44 (d, J = 1.0 Hz, 3H), 2.02 (dt, J = 14.7, 2.5 Hz, 2H), 1.88-1.73 (m, 2H). ES-MS [M + H]+ = 362.
1H NMR (400 MHz, CDCl3) δ 8.60 (s, 1H), 8.42 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.34 (s, 1H), 6.76 (s, 1H), 4.03 (dp, J = 11.7, 1.9 Hz, 2H) 2.93 (tt, J = 12.2, 3.5 Hz, 1H), 2.59 (s, 3H), 2.54 (td, J = 12.2, 2.6 Hz, 2H), 2.11 (dq, J = 12.6, 2.3 Hz, 2H), 1.93 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 414
1H NMR (400 MHz, CDCl3) δ 8.79 (d, J = 0.7 Hz, 1H), 8.38 (s, 1H), 8.26 (s, 1H), 7.54 (t, J = 1.0 Hz, 1H), 4.02 (dp, J = 11.7, 1.9 Hz, 2H), 2.75 (tt, J = 12.2, 3.3 Hz, 1H), 2.64 (td, J = 12.1, 2.4 Hz, 2H), 2.50 (d, J = 0.6 Hz, 3H), 2.44 (d, J = 0.9 Hz, 3H), 2.10-1.99 (m, 2H), 1.91-1.76 (m, 2H). ES-MS [M + H]+ = 362
1H NMR (400 MHz, CDCl3) δ 8.71 (dd, J = 6.8, 0.6 Hz, 1H), 8.34 (s, 1H), 7.81 (s, 1H), 7.45 (d, J = 10.9 Hz, 1H), 3.94 (s, 3H), 3.91 (dd, J = 12.1, 5.0 Hz, 2H), 2.91 (ddd, J = 12.6, 10.5, 2.5 Hz, 2H), 2.58 (td, J = 13.4, 5.0 Hz, 1H), 2.47 (td, J = 13.4, 5.1 Hz, 1H), 2.14-2.02 (m, 2H). ES-MS [M + H]+ = 417
1H NMR (400 MHz, CDCl3) δ 8.71 (d, J = 6.7 Hz, 1H), 8.34 (s, 1H), 7.61 (s, 1H), 7.44 (d, J = 10.9 Hz, 1H), 4.50-4.43 (m, 2H), 4.24 (t, J = 6.2 Hz, 2H), 3.85 (dd, J = 11.6, 4.8 Hz, 2H), 2.86 (t, J = 12.2 Hz, 2H), 2.58 (d, J = 13.4, 5.0 Hz, 1H), 2.48 (td, J = 13.5, 5.1 Hz, 1H), 2.41-2,30 (m, 2H), 2.07 (t, J = 11.8 Hz, 2H). ES-MS [M + H]+ = 425
1H NMR (400 MHz, CDCl3) δ 8.40 (d, J = 6.5 Hz, 1H), 8.30 (s, 1H), 7.52 (s, 1H), 7.40 (d, J = 9.9 Hz, 1H), 4.07 (dt, J = 12.3, 2.3 Hz, 2H), 2.92 (tt, J = 12.3, 3.4 Hz, 1H), 2.80 (td, J = 12.4, 2.5 Hz, 2H), 2.58 (s, 3H), 2.13-2.00 (m, 2H), 1.87 (qd, J = 12.7, 4.1 Hz, 2H). ES-MS [M + H]+ = 366
1H NMR (400 MHz, CDCl3) δ 8.58 (dt, J = 7.0, 1.1 Hz, 1H), 8.35 (s, 1H), 8.25 (s, 1H), 8.24 (s, 1H), 8.05 (dt, J = 9.0, 1.2 Hz, 1H), 7.49 (t, J = 1.0 Hz, 1H), 7.46 (ddd, J = 9.0, 6.9, 1.1 Hz, 1H), 7.05 (td, J = 6.9, 1.4 Hz, 1H), 4.05 (dp, J = 11.3, 1.8 Hz, 2H), 2.60 (tt, J = 12.1, 3.4 Hz, 1H), 2.43 (td, J = 11.9, 2.5 Hz, 2H), 2.36 (d, J = 1,0 Hz, 3H), 2.03-1.93 (m, 2H), 1.92-1.77 (m, 2H). ES-MS [M + H]+ = 397
1H NMR (400 MHz, CDCl3) δ 8.60 (d, J = 1.1 Hz, 1H), 8.58 (d, J = 1.1 Hz, 1H), 8.41 (s, 1H), 8.24 (s, 1H), 8.05 (dt, J = 8.9, 1.2 Hz, 1H), 7.89 (d, J = 1.5 Hz, 1H), 7.47 (ddd, J = 9.0, 6.9, 1.1 Hz, 1H), 7.06 (td, J = 7.0, 1.4 Hz, 1H), 6.71 (t, J = 54.3 Hz, 1H), 4.05 (dp, J = 11.5, 2.0 Hz, 2H), 2.82 (tt, J = 12.2, 3.5 Hz, 1H), 2.41 (td, J = 11.9, 2.5 Hz, 2H), 2.10-2.01 (m, 2H), 1.91 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 433
1H NMR (400 MHz, CDCl3) δ 8.58 (s, 1H), 8.41 (s, 1H), 7.90 (s, 1H), 7.88 (d, J = 4.5 Hz, 1H), 7.82 (d, J = 1.1 Hz, 1H), 7.07 (dd, J = 4.5, 1.1 Hz, 1H), 6.75 (t, J = 54.3 Hz, 1H), 4.02 (dp, J = 11.8, 1.9 Hz, 2H), 2.90 (tt, J = 12.2, 3.5 Hz, 1H), 2.56 (td, J = 12.1, 2.4 Hz, 2H), 2.10 (d, J = 3.5 Hz, 2H), 1.96-1.81 (m, 2H). ES-MS [M + H]+ = 439
1H NMR (400 MHz, CDCl3) δ 8.57 (s, 1H), 8.39 (s, 1H), 8.05 (t, J = 0.9 Hz, 1H), 7.81 (d, J = 4.5 Hz, 1H), 7.75 (d, J = 1.1 Hz, 1H), 7.01 (dd, J = 4.5, 1.1 Hz, 1H), 3.96 (dt, J = 11.4, 2.3 Hz, 2H), 2.89- 2,78 (m, 1H), 2.49 (td, J = 12.1, 2.4 Hz, 2H), 2.05-1.97 (m, 2H), 1.83 (qd, J = 12.5, 4.1 Hz, 2H). ES-MS [M + H]+ = 457
1H NMR (400 MHz, CDCl3) δ 8.39 (d, J = 6.5 Hz, 1H), 8.29 (s, 1H), 7.87 (d, J = 4.5 Hz, 1H), 7.81 (d, J = 1.2 Hz, 1H), 7.37 (d, J = 9.9 Hz, 1H), 7.06 (dd, J = 4.5, 1.1 Hz, 1H), 4.01 (dp, J = 11.4, 1.9 Hz, 2H), 2.83 (tt, J = 12.3, 3.5 Hz, 1H), 2.59 (td, J = 12.1, 2.5 Hz, 2H), 2.07 (dt, J = 13.5, 2.5 Hz, 2H), 1.87 (qd, J = 12.6, 4.1 Hz, 2H). ES-MS [M + H]+ = 407
1H NMR (400 MHz, CDCl3) δ 8.28 (s, 1H), 8.26 (s, 1H), 7.35 (s, 1H), 2.71 (tt, J = 12.2, 3.2 Hz, 1H), 2.58 (s, 3H), 2.34 (d, J = 2,9 Hz, 3H), 2.04 (ddd, J = 13.9, 2.9, 1.2 Hz, 2H), 1.86 (t, J = 12.8 Hz, 2H). ES-MS [M + H]+ = 400
1H NMR (400 MHz, CDCl3) δ 8.29 (s, 1H), 8.26 (s, 1H), 7.96 (s, 1H), 4.03 (dq, J = 11.7, 2.1 Hz, 2H), 2.73 (tt, J = 12.1, 3.3 Hz, 1H), 2.61 (td, J = 12.1, 2.4 Hz, 2H), 2.36 (d, J = 2.9 Hz, 3H), 2.06 (dt, J = 13.1, 2.6 Hz, 2H), 1.87 (dtd, J = 13.3, 12.1, 4.0 Hz, 2H). ES-MS [M + H]+ = 416
1H NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.33 (s, 1H), 7.83 (d, J = 0.7 Hz, 1H), 4.19 (dt, J = 12.4, 2.3 Hz, 2H), 3.26- 3.08 (m, 3H), 2.89 (s, 3H), 2.16 (dt, J = 12.6, 2.5 Hz, 2H), 1.93-1.78 (m, 2H). ES-MS [M + H]+ = 399
1H NMR (400 MHz, CDCl3) δ 8.38 (s, 1H), 8.26 (s, 1H), 7.70 (s, 1H), 7.53 (s, 1H), 6.44 (t, J = 6.3 Hz, 1H), 4.61 (d, J = 6.4 Hz, 2H), 4.10 (s, 3H), 3.96 (dt, J = 12.6, 3.3 Hz, 2H), 2.69 (tt, J = 12.1, 3.3 Hz, 1H), 2.52 (td, J = 11.9, 2.4 Hz, 2H), 2.42 (d, J = 1.0 Hz, 3H), 2.01 (d, 2H), 1.99 (s, 3H), 1.86 (qd, J = 12.5, 3.8 Hz, 2H). ES-MS [M + H]+ = 432
1H NMR (400 MHz, CDCl3) δ 8.46 (s, 1H), 8.35 (s, 1 H), 8.07 (s, 1 H), 7.84 (s, 1H), 2.94-3.06 (m, 1H), 2.16 (dd, J = 13.5, 3.3 Hz, 2H), 1.84 (br t, J = 12.7 Hz, 2H). ES-MS [M + H]+ = 405
1H NMR (400 MHz, CDCl3) δ 7.88 (s, 1H), 7.72 (s, 1H), 6.23 (t, J = 0.8 Hz, 1H), 3.90 (dtd, J = 11.5, 3.7, 1.6 Hz, 2H), 3.85 (s, 3H), 2.97 (s, 6H), 2.51-2,37 (m, 3H), 2.14 (d, J = 0.7 Hz, 3H), 1.77 (h, J = 3.6 Hz, 4H). ES-MS [M + H]+ = 398
1H NMR (400 MHz, CDCl3) δ 8.74 (t, J = 6.5 Hz, 1H), 8.54 (ddd, J = 4.8, 1.7, 0.9 Hz, 1H), 8.34 (s, 1H), 8.26 (s, 1H), 8.15 (dt, J = 7.8, 1.1 Hz, 1H), 7.85 (td, J = 7.7, 1.7 Hz, 1H), 7.72 (s, 1H), 7.51 (s, 1H), 7.43 (ddd, J = 7.6, 4.8, 1.2 Hz, 1H), 4.88 (d, J = 6.6 Hz, 2H), 4.17 (s, 3H), 4.07- 3.99 (m, 2H), 2.68-2.55 (m, 1H), 2.48 (td, J = 11.7, 2.8 Hz, 2H), 2.37 (d, J = 1.0 Hz, 3H), 1.95-1.87 (m, 2H), 1.81 (td, J = 12.6, 3.9 Hz, 2H). ES-MS [M + H]+ = 495
1H NMR (400 MHz, CDCl3) δ 7.78 (s, 1H), 3.99 (dp, J = 11.9, 2.0 Hz, 2H), 3.91 (d, J = 6.4 Hz, 5H), 2.92-2,79 (m, 3H), 2.51 (td, J = 12.2, 2.6 Hz, 2H), 2.14- 1.95 (m, 4H), 1.91 (dtt, J = 9.3, 6.4, 3.6 Hz, 2H), 1.85-1.76 (m, 2H). ES-MS [M + H]+ = 452
1H NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.33 (s, 1H), 8.00 (s, 1H), 7.83 (s, 1H), 4.20 (s, 3H), 4.15-4,10 (m, 2H), 3.04 (tt, J = 12.2, 3.3 Hz, 1H), 2.92 (td, J = 12.4, 2.4 Hz, 2H), 2.12 (dt, J = 13.1, 2.6 Hz, 2H), 1.83 (qd, J = 12.6, 4.1 Hz, 2H). ES-MS [M + H]+ = 382
1H NMR (400 MHz, CDCl3) δ 7.93 (s, 1H), 7.49 (s, 1H), 6.31 (t, J = 0.8 Hz, 1H), 4.05-3.95 (m, 2H), 3.04 (s, 6H), 2.71 (td, J = 11.9, 3.3 Hz, 2H), 2.64- 2.55 (m, 4H), 2.23 (d, J = 0.7 Hz, 3H), 1.95-1.72 (m, 4H). ES-MS [M + H]+ = 365
1H NMR (400 MHz, CDCl3) δ 8.34 (d, J = 6.5 Hz, 1H), 8.24 (s, 1H), 7.45 (s, 1H), 7.34 (d, J = 9.9 Hz, 1H), 2.92-2,79 (m, 1H), 2.52 (s, 3H), 2.05-1.97 (m, 2H), 1.78 (t, J = 12.7 Hz, 2H). ES-MS [M + H]+ = 370
1H NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.26 (s, 1H), 7.55-7.52 (m, 1H), 7.52 (s, 1H), 2.76 (tt, J = 12.2, 3.3 Hz, 1H), 2.59 (s, 3H), 2.52-2,42 (m, 3H), 2.02 (ddd, J = 13.9, 3.0, 1.2 Hz, 2H), 1.90-1.74 (m, 2H). ES-MS [M + H]+ = 366
1H NMR (400 MHz, CDCl3) δ 8.29 (s, 1H), 8.24 (s, 1H), 7.52 (s, 1H), 2.84- 2.72 (m, 1H), 2.59 (s, 3H), 2.37 (d, J = 2.9 Hz, 2H), 2.02 (ddd, J = 13.9, 2.9, 1.2 Hz, 2H), 1.80 (t, J = 12.7 Hz, 2H). ES-MS [M + H]+ = 384
1H NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.33 (s, 1H), 8.05 (s, 1H), 7.83 (s, 1H), 4.04 (br d, J = 11.8 Hz, 2H), 2.93- 3.04 (m, 1H), 2.54-2,67 (m, 2H), 2.16 (br d, J = 13.1 Hz, 2H), 1.84 (qd, J = 12.5, 4.1 Hz, 2H). ES-MS [M + H]+ = 401
1H NMR (400 MHz, CDCl3) δ 8.36 (s, 1H), 8.25 (s, 1H), 7.63 (s, 1H), 7.51 (t, J = 1.1 Hz, 1H), 4.14 (s, 3H), 3.95 (dp, J = 11.5, 1.8 Hz, 2H), 3.75 (s, 3H), 2.68 (tt, J = 12.2, 3.4 Hz, 1H), 2.53 (td, J = 12.1, 2.4 Hz, 2H), 2.42 (d, J = 1.0 Hz, 3H), 1.99 (dt, J = 13.5, 2.6 Hz, 2H), 1.88-1.77 (m, 2H). ES-MS [M + H]+ = 391
1H NMR (400 MHz, CDCl3) δ 8.42 (s, 1H), 8.32 (s, 1H), 7.81 (s, 1H), 7.63 (s, 1H), 4.14 (s, 3H), 4.01-3.91 (m, 2H), 3.75 (s, 3H), 2.96 (tt, J = 12.3, 3.3 Hz, 1H), 2.56 (td, J = 12.1, 2.3 Hz, 2H), 2.11 (dt, J = 12.9, 2.7 Hz, 2H), 1.86-1.73 (m, 2H). ES-MS [M + H]+ = 411
1H-NMR (400 MHz, MeOD) δ 8.60 (s, 1H), 8.30 (s, 1H), 7.73 (s, 1H), 7.55 (s, 1H), 4.03 (s, 3H), 3.94-3.86 (m, 2H), 3.63 (tt, J = 12.8, 3.7 Hz, 1H), 3.18 (d, J = 11.8 Hz, 2H), 2.88 (tt, J = 12.1, 3.3 Hz, 1H), 2.70 (td, J = 12.4, 2.7 Hz, 2H), 2.61 (td, J = 12.0, 2.5 Hz, 2H), 2.49 (d, J = 1.1 Hz, 3H), 2.19-2.07 (m, 2H), 2.07-1.98 (m, 2H), 1.91-1.78 (m, 2H), 1.75 (d, J = 10.6 Hz, 2H). ES-MS [M + H]+ = 444
1H-NMR (400 MHz, CDCl3) δ 8.43 (s, 1H), 8.34 (s, 1H), 7.84 (s, 1H), 7.52 (s, 1H), 3.05 (tt, J = 12.2, 2.9 Hz, 1H), 2.59 (s, 3H), 2.18-2.09 (m, 2H), 1.78 (t, J = 12.9 Hz, 2H). ES-MS [M + H]+ = 386
1H-NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 8.33 (s, 1H), 8.18 (s, 1H), 7.84 (s, 1H), 3.94 (s, 3H), 3.32-3.16 (m, 1H), 2.17 (ddd, J = 13.5, 2.8, 1.1 Hz, 2H), 1.89 (t, J = 12.6 Hz, 2H). ES-MS [M + H]+ = 386
1H-NMR (400 MHz, CDCl3) δ 7.77 (s, 1H), 7.41 (dd, J = 1.8, 0.8 Hz, 1H), 6.58 (dd, J = 3.4, 0.8 Hz, 1H), 6.44 (dd, J = 3.4, 1.8 Hz, 1H), 6.27 (s, 1H), 3.91 (s, 3H), 3.88-3.80 (m, 2H), 2.68 (tt, J = 11.6, 3.8 Hz, 1H), 2.54 (td, J = 11.9, 2.6 Hz, 2H), 2.05 (ddd, J = 14.2, 4.0, 2.0 Hz, 2H), 1.83 (dtd, J = 13.3, 11.7, 4.0 Hz, 2H). ES-MS [M + H]+ = 396
1H NMR (400 MHz, CDCl3) δ 8.04 (s, 1H), 7.95 (s, 1H), 7.67 (s, 1H), 7.63 (d, J = 1.1 Hz, 1H), 7.57 (s, 1H), 4.01 (br d, J = 11.6 Hz, 2H), 2.87-2,98 (m, 1H), 2.81 (s, 3H), 2.57 (td, J = 12.0, 2.1 Hz, 2H), 2.14 (br d, J = 13.0 Hz, 2H), 1.80 (qd, J = 12.6, 3.9 Hz, 2H). ES-MS [M + H]+ = 397
1H NMR (400 MHz, CDCl3) δ 7.79 (s, 1H), 7.42 (dd, J = 1.8, 0.8 Hz, 1H), 6.60 (dd, J = 3.3, 0.8 Hz, 1H), 6.44 (dd, J = 3.3, 1.8 Hz, 1H), 6.25 (d, J = 0.5 Hz, 1H), 3.96 (dt, J = 11.8, 2.5 Hz, 2H), 3.92 (s, 3H), 3.81 (s, 3H), 2.65-2.51 (m, 3H), 2.06-1.96 (m, 2H), 1.82 (dtd. J = 13.4, 12.0, 4.1 Hz, 2H). ES-MS [M + H]+ = 410
1H NMR (400 MHz, CDCl3) δ 7.78 (s, 1H), 7.49 (dd, J = 1.8, 0.8 Hz, 1H), 6.56- 6.47 (m, 2H), 6.26 (s, 1H), 3.97 (s, 3H), 3.91 (s, 3H), 3.89 (s, 1H), 3.86 (s, 1H), 2.71-2.52 (m, 3H), 2.11-2.01 (m, 2H), 1.83 (dtd, J = 13.3, 11.8, 4.0 Hz, 2H). ES-MS [M + H]+ = 410
1H NMR (400 MHz, CDCl3) δ 7.78 (s, 1H), 3.98 (dp, J = 11.8, 1.9 Hz, 2H), 3.92 (s, 3H), 3.72 (s, 3H), 2.72-2.57 (m, 3H), 2.56-2,44 (m, 4H), 2.12-1.93 (m, 2H), 1.88-1.80 (m, 2H), 1.78-1.70 (m, 4H). ES-MS [M + H]+ = 398
1H NMR (400 MHz, CDCl3) δ 8.59 (s, 1H), 8.42 (s, 1H), 7.92 (s, 1H), 7.51 (s, 1H), 6.79 (t, J = 54.3 Hz, 1H), 3.00 (tt, J = 12.3, 3.5 Hz, 1H), 2.60 (s, 3H), 2.14- 2.02 (m, 2H), 1.86 (t, J = 12.8 Hz, 2H). ES-MS [M + H]+ = 402
1H-NMR (400 MHz, MeOD) δ 8.80 (s, 1H), 8.39 (s, 1H), 8.16 (s, 1H), 7.90 (s, 1H), 4.89 (s, 2H), 3.98 (d, J = 11.8 Hz, 2H), 3.07 (tt, J = 12.1, 3.1 Hz, 1H), 2.63 (td, J = 12.1, 2.4 Hz, 3H), 2.13 (m, 2H), 1.90 (qd, J = 12.7, 4.0 Hz, 2H). ES-MS [M + H]+ = 414
1H-NMR (400 MHz, CDCl3) δ 8.78 (dd, J = 4.9, 1.6 Hz, 1H), 8.42 (s, 1H), 8.28 (s, 1H), 8.12 (dd, J = 7.7, 1.5 Hz, 1H), 7.78 (s, 1H), 7.56 (s, 1H), 7.42 (dd, J = 7.7, 5.0 Hz, 1H), 5.19 (s, 2H), 4.50 (s, 2H), 4.01 (s, 3H), 3.98 (m, 2H), 2.72 (tt, J = 12.1, 3.0 Hz, 1H), 2.55 (td, J = 11.9, 2.0 Hz, 2H), 2.44 (s, 3H), 2.03 (br d, J = 12.9 Hz, 2H), 1.93-1.79 (m, 2H). ES-MS [M + H]+ = 507
1H-NMR (400 MHz, CDCl3) δ 8.98 (s, 1H), 8.34 (s, 1H), 8.28 (s, 1H), 7.93 (s, 1H), 7.57 (s, 1H), 3.78 (d, J = 12.2 Hz, 2H), 3.74 (s, 3H), 2.67 (tt, J = 12.2, 3.1 Hz, 1H), 2.52-2,45 (m, 2H), 2.44 (s, 3H), 2.39 (s, 3H), 1.98-1.89 (m, 2H), 1.78-1.65 (m, 2H). ES-MS [M + H]+ = 458
1H-NMR (400 MHz, MeOD) δ 8.80 (s, 1H), 8.40 (s, 1H), 7.80 (d, J = 0.9 Hz, 1H), 7.58 (s, 1H), 5.62 (dd, J = 46.7, 1.0 Hz, 2H), 4.02-3.92 (m, 2H), 2.82 (tt, J = 12.2, 3.3 Hz, 1H), 2.62 (td, J = 12.1, 2.8 Hz, 2H), 2.56 (s, 3H), 2.11-2.02 (m, 2H), 1.95 (qd, J = 12.5,4.1 Hz, 2H). ES-MS [M + H]+ = 396
1H-NMR (400 MHz, MeOD) δ 8.81 (s, 1H), 8.40 (s, 1H), 7.85 (s, 1H), 7.58 (s, 1H), 4.87 (s, 2H), 3.98 (m, 2H), 3.00 (tt, J = 12.1, 3.4 Hz, 1H), 2.64 (d, J = 12.1, 2.6 Hz, 2H), 2.57 (s, 3H), 2.16-2.07 (m, 2H), 2.03-1.91 (m, 2H). ES-MS [M + H]+ = 412
1H-NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 8.32-8.38 (m, 1H), 7.83-7.90 (m, 1H), 4.13-4,56 (m, 2H), 3.32 (br t, J = 12.5 Hz, 2H), 3.15-3.26 (m, 1H), 2.68 (s, 3H), 2.20 (br d, J = 13.0 Hz, 2H), 1.85-1.96 (m, 2H). ES-MS [M + H]+ = 399
1H NMR (400 MHz, CDCl3) δ 8.43 (s, 1H), 7.83 (s, 1H), 7.51 (s, 1H), 4.07 (dp, J = 12.3, 2.0 Hz, 2H), 3.04 (tt, J = 12.2, 3.3 Hz, 1H), 2.79 (td, J = 12.4, 2.4 Hz, 2H), 2.58 (s, 3H), 2.15 (dt, J = 13.1, 2.6 Hz, 2H), 1.87-1.72 (m, 2H). ES-MS [M + H]+ = 383
1H NMR (400 MHz, CDCl3) δ 8.41 (d, J = 0.7 Hz, 1H), 7.82 (d, J = 0.7 Hz, 1H), 7.54 (s, 1H), 5.86 (d, J = 3.3, 1.6 Hz, 1H), 4.01 (q, J = 2.8 Hz, 2H), 3.56 (t, J = 5.6 Hz, 2H), 2.61 (dddd, J = 5.7, 4.6, 3.4, 1.8 Hz, 2H), 2.58 (s, 3H). ES-MS [M + H]+ = 381
1H NMR (400 MHz, CDCl3) δ 8.40 (d, J = 0.7 Hz, 1H), 8.07 (s, 1H), 7.80 (d, J = 0.7 Hz, 1H), 5.84 (tt, J = 3.4, 1.6 Hz, 1H), 3.90 (q, J = 2.8 Hz, 2H), 3.43 (t, J = 5.6 Hz, 2H), 2.80 (s, 3H), 2.67-2.59 (m, 2H). ES-MS [M + H]+ = 397
1H NMR (400 MHz, CDCl3) δ 8.43 (d, J = 0.7 Hz, 1H), 8.32 (s, 1H), 7.81 (s, 1H), 7.63 (s, 1H), 4.00-3.93 (m, 2H), 3.76 (s, 3H), 2.97 (tt, J = 12.2, 3.3 Hz, 1H), 2.56 (td, J = 12.2, 2.3 Hz, 2H), 2.11 (dt, J = 13.0, 2.7 Hz, 2H), 1.79 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 414
1H NMR (400 MHz, CDCl3) δ 8.33 (s, 1H), 7.52 (s, 1H), 4.08 (dp, J = 12.1, 1.9 Hz, 2H), 3.04 (tt, J = 12.2, 3.3 Hz, 1H), 2.79 (td, J = 12.4, 2.4 Hz, 2H), 2.59 (s, 3H), 2.15 (dq, J = 15.3, 2.4 Hz, 2H), 1.87- 1.72 (m, 2H). ES-MS [M + H]+ = 384
1H NMR (400 MHz, CDCl3) δ 7.51 (s, 1H), 4.07 (dp, J = 12.2, 1.9 Hz, 2H), 3.04 (tt, J = 12.2, 3.3 Hz, 1H), 2.79 (td, J = 12.4, 2.4 Hz, 2H), 2.58 (s, 3H), 2.14 (dt, J = 13.1, 2.4 Hz, 2H), 1.87-1.72 (m, 2H). ES-MS [M + H]+ = 385
1H NMR (400 MHz, CDCl3) δ 8.49 (s, 1H), 8.30 (s, 1H), 7.74 (dd, J = 2.5, 1.0 Hz, 1H), 7.47 (s, 1H), 5.47 (d, J = 47.0 Hz, 2H), 4.00 (dp, J = 12.3, 2.0 Hz, 2H), 2.83-2,65 (m, 3H), 2.54 (s, 3H), 2.02 (dt, J = 14.3, 2.5 Hz, 2H), 1.82 (qd, J = 12.5, 4.1 Hz, 2H). ES-MS [M + H]+ = 380
1H NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.34 (s, 1H), 7.84 (s, 1H), 7.53 (s, 1H), 4.05-4,14 (m, 2H), 3.06 (tt, J = 12.1, 3.0 Hz, 1H), 2.81 (td, J = 12.3, 2.1 Hz, 2H), 2.55-2,61 (m, 1H), 2.16 (br d, J = 13.1 Hz, 2H), 1.81 (qd, J = 12.6, 3.8 Hz, 2H). ES-MS [M + H]+ = 384
1H-NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.34 (s, 1H), 7.82 (s, 1H), 4.07 (s, 3H), 4.02 (d, J = 12.2 Hz, 2H), 3.76 (s, 3H), 3.00 (t, J = 12.2 Hz, 1H), 2.67 (t, J = 11.1 Hz, 2H), 2.10 (d, J = 12.8 Hz, 2H), 1.78 (qd, J = 12.5, 4.1 Hz, 2H). ES-MS [M + H]+ = 537
1H-NMR (400 MHz, CDCl3) δ 8.44 (s, 1H), 8.36 (s, 1H), 7.91 (s, 1H), 4.05 (d, J = 12.2 Hz, 2H), 3.95 (s, 3H), 3.88 (s, 3H), 3.01 (tt, J = 12.2, 3.3 Hz, 1H), 2.67 (td, J = 12.3, 2.5 Hz, 2H), 2.10 (d, J = 13.4 Hz, 2H), 1.78 (qd, J = 12.5, 4.0 Hz, 2H). ES-MS [M + H]+ = 537
All functional cell-based assays were performed essentially as previously described (Mario et al., Mol. Pharm. 2009, 75(3), 577-588; Brady et al., J. Pharm. & Exp. Ther. 2008, 327, 941-953). Initial, single point (10 μM) compound characterization was performed in stable Chinese Hamster Ovary (CHO) cell lines constitutively expressing human M5 receptors. These were plated at 15,000 cells per 20 μL per well in Greiner 384-well black-walled, TC-treated, clear-bottomed plates (Fisher) in Ham's F12 medium supplemented with 10% FBS and 20 mM HEPES. Cells were incubated overnight at 37° C. under 5% CO2. The following day, medium was exchanged with assay buffer (Hank's Balanced Salt Solution supplemented with 20 mM HEPES and 2.5 mM Probenecid, pH 7.4) leaving 20 μL of assay buffer in each well. This was followed by the addition of 20 μL of 2.3 μM of Fluo-4 AM (Invitrogen) in assay buffer (final concentration 1.15 μM). The cells were then incubated 50 minutes at 37° C. under 5% CO2. The assay buffer plus dye was then exchanged with fresh assay buffer leaving a volume of 20 μL in each well. Test compounds were diluted into assay buffer to a 2X (20 μM) concentration in 0.2% dimethylsulfoxide (DMSO) in columns 3-22 with matching DMSO concentration in columns 1, 2, 23, and 25; compounds were added to the assay for a final concentration of 10 μM and a final DMSO concentration of 0.1%. Acetylcholine (Sigma-Aldrich) was prepared to provide 5× concentrations of EC20, EC80, and ECmax in the triple-addition assay, providing a signal window to view agonism, potentiation, and inhibition of the acetylcholine response as well as a means to normalize to the maximum acetylcholine response.
Either an FDSS (Hamamatsu) or Panoptic (WaveFront Biosciences) kinetic imaging plate reader was used for assay execution and measurement of calcium flux. After establishing baseline fluorescence, test compounds (20 μL) were added to the cells using the reader's integrated pipettor and allowed to equilibrate for 140 seconds before addition of the EC20 concentration of acetylcholine (10 μL) along with vehicle in selected DMSO-only wells in the outer two columns . The EC80 concentration of acetylcholine (10 μL) was added 125 seconds after the EC20 addition along with ECmax concentration in the wells receiving vehicle in the second addition. The raw fluorescence data from each well was normalized to the corresponding initial fluorescence reading (static ratio). The maximum fluorescence value following each addition was determined and the minimum value within that same timeframe was subtracted for each well then normalized to the average of the ECffiax maximum-minimum response, providing a % AChmax value for each addition for each well. The single point values represent mean values determined within the ECsu addition timeframe obtained from at least three independent determinations performed in triplicate or greater (error bars represent +/−SEM) unless otherwise specified.
Further characterization of test compounds (compound potency and mAChR subtype-selectivity) was performed on the FDSS with calcium mobilization assays performed as previously described (Marlo et al., 2009; Brady et al., 2008) and in a format similar to that described above using the same reagents. CHO cells stably expressing hM1, hM2/Gqi5, hM3, hM4/Gqi5, hM5, rM1/Gqi5, rM3, rM4/Gqi5, or rM5 were plated in the manner described above. A ten-point concentration range of test compound was serial diluted in assay buffer to 2× final concentration and acetylcholine was diluted in assay buffer to 5× of the EC20 and EC80 concentrations, determined empirically and 5× maximal (2 mM final concentration) stock concentrations. FDSS protocols were carried out as described above; the static ratio was calculated and the minimum response subtracted from the maximum response within the timeframe of each addition. This max-min response was then normalized to the maximum acetylcholine response. Calculation of IC50 was performed using the percent maximum acetylcholine response for the EC80 addition through the Vortex and Studies modules of the Dotmatics data management software. Results are stored in the Dotrnatics database and an audit trail of any changes to their analysis is generated. Data shown represent mean values obtained from at least three independent determinations performed in triplicate or greater (error bars represent±SEM) unless otherwise specified.
This application claims priority to U.S. Provisional Application No. 63/029,286, filed May 22, 2020, and U.S. Provisional Application No. 63/129,098, filed Dec. 22, 2020, which are hereby incorporated by reference in their entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2021/033574 | 5/21/2021 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63029286 | May 2020 | US | |
| 63129098 | Dec 2020 | US |
