IP Library › Granted Patent US 10,316,039
Granted Patent B2
US 10,316,039 · App. 15/906,712 · Granted Jun 11, 2019

P2X

Inventors: Scott K. Thompson (Phoenixville, PA); Aranapakam Venkatesan (Chadds Ford, PA); Tony Priestley (West Chester, PA); Mrinal Kundu (Kolkata, IN); Ashis Saha (Waltham, MA)
Assignee: Asana BioSciences, LLC
C07D471/04A61K31/437A61K31/444A61K31/4545A61K31/496A61K31/497A61K31/506C07D471/22
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Quick Facts
Patent No.
US 10,316,039
App. No.
15/906,712
Granted
Jun 11, 2019
Kind
B2
Abstract

The present application provides novel compounds and methods for preparing and using these compounds. In one embodiment, the compounds are of the structure of formula (I), wherein R 1 -R 4 are defined herein. In a further embodiment, these compounds are useful in method for regulating one or both of the P2X 3 or P2X 2/3 receptors. In another embodiment, these compounds are useful for treating pain in patients by administering one or more of the compounds to a patient.

Claims (203)

1. A method for treating a respiratory disorder in a patient, said method comprising administering to said patient a therapeutically effective amount of a compound of the structure of formula (IV):

wherein:

R 2 is optionally substituted aryl, optionally substituted heteroaryl, C 1 to C 6 alkyl, or S—C 1 to C 6 alkyl;

R 4 is optionally substituted heteroaryl;

R 5 and R 6 are, independently, selected from the group consisting of H, optionally substituted C 1 to C 6 alkyl, C 3 to C 6 cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, and CO(C 1 to C 6 alkyl); or

R 5 and R 6 are joined to form a 5 or 6-membered heterocyclic ring optionally substituted by one or more of halogen, C 1 to C 6 alkyl, C 1 to C 6 alkoxy, C 1 to C 6 hydroxyalkyl, C 3 to C 6 cycloalkyl, C 1 to C 6 alkyl containing 1 to 3 fluorine atoms, C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl, or CONH 2 ;

or a pharmaceutically acceptable salt or prodrug thereof.

2. A method for treating a respiratory disorder in a patient, said method comprising administering to said patient a therapeutically effective amount of a compound selected from the group consisting of

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1,3,4-oxadiazol-2-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(2,5-dimethyl-1H-imidazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethyl-4H-1,2,4-triazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methyl-1,3,4-thiadiazol-2-yl)-N-((6-methylpyridin-3-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-pyrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-methyl-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-butyl-8-(4-methylpiperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(propylthio)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-carbamoyl-4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(4-carbamoylpiperazin-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide

(S)—N-(1-(1,3,4-oxadiazol-2-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(o-tolyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(hydroxymethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(N-methylisobutyramido)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1,3,4-oxadiazol-2-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-methyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-methyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclobutyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(tert-butyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)-N-((6-methylpyridin-3-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(1,3,4-oxadiazol-2-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-13-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-cyanothiophen-2-yl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-13-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(tert-butyl)-1H-1,2,3-triazol-1-yl)-13-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-(trifluoromethyl)thiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-propyl-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-propyl-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)-N-((2-methylpyrimidin-5-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(2-methylthiazol-5-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-(tert-butyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-chlorothiophen-2-yl)-8-(5-isopropyl-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-methyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)-N-((5-methylpyrazin-2-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methoxypyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-(1-(2-methylpyrimidin-5-yl)ethyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(thiazol-2-ylamino)imidazo[1,2-a]pyridine-6-carboxamide,

N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(thiazol-2-ylamino)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-((5-methylthiazol-2-yl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-((4-fluorophenyl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-((2-methoxyphenyl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(1-methyl-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

8-(1-methyl-1H-pyrazol-4-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(1-methyl-1H-pyrazol-4-yl)-N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-methyl-1H-pyrazol-5-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3,8-bis(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethylisoxazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-ethyl-1H-pyrazol-5-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-(cyclopropylmethyl)-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-(2-fluoroethyl)-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(3,5-dimethylisoxazol-4-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(3,5-dimethylisoxazol-4-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)propyl)-8-(3,5-dimethylisoxazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethylisoxazol-4-yl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethyl-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(3,5-dimethyl-1H-pyrazol-4-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-(2-amino-2-oxoethyl)-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-ethyl-1H-pyrazol-5-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(propylthio)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

8-(4-methylpiperidin-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(4-methylpiperidin-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(4-methylpiperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

5-((3-(5-chlorothiophen-2-yl)-8-(4-methylpiperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(cyclohexylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(cyclohexylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

5-((8-(4,4-dimethylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(cyclohexylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-(trifluoromethyl)pyridine 1-oxide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

5-((8-(cyclohexyl(methyl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(4-fluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4,4-dimethylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((3-(5-methylthiophen-2-yl)-8-(4-(trifluoromethyl)piperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

5-((8-(4-(fluoromethyl)piperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-(fluoromethyl)piperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(4-(trifluoromethyl)piperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(cyclopentylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4,4-difluoropiperidin-1-yl)-3-(4-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-fluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3-methoxypyrrolidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methoxy-4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methoxypiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3-methoxypiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3-methoxy-3-methylpyrrolidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(1H-pyrazol-3-yl)ethyl)-8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)-8-(4,4-difluoropiperidin-1-yl)-N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

3-((8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(4-methoxypiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(4-carbamoyl-4-methylpiperidin-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(1H-1,2,4-triazol-5-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(m-tolyl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(o-tolyl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

8-(5-isopropyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-((6-(trifluoromethyl)pyridin-3-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-cyclopropylpyridin-3-yl)methyl)-8-(5-ethyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(cyclopropylmethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-methyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-propyl-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-(1-(pyrazin-2-yl)ethyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-(1-(pyrazin-2-yl)ethyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-(1-(pyrazin-2-yl)ethyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((6-methoxypyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclobutyl-1H-tetrazol-1-yl)-13-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(cyclopropylmethyl)-1H-tetrazol-1-yl)-13-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclopropyl-1H-tetrazol-1-yl)-13-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-13-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-cyclopropyl-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-propyl-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-(1-(5-methyl-1,3,4-oxadiazol-2-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(1,1-difluoroethyl)-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-3-(5-methylfuran-2-yl)-N-((2-methylpyrimidin-5-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(1,1-difluoroethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(1,1-difluoroethyl)-1H-tetrazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(N-methylpropionamido)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(N-cyclopropylpropionamido)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide.

3. A kit comprising one or more dosage forms for treating a respiratory disorder and instructions for administering the dosage forms to a patient, wherein the dosage forms comprise a compound of the structure of formula (IV):

wherein:

R 2 is optionally substituted aryl, optionally substituted heteroaryl, C 1 to C 6 alkyl, or S—C 1 to C 6 alkyl;

R 4 is optionally substituted heteroaryl;

R 5 and R 6 are, independently, selected from the group consisting of H, optionally substituted C 1 to C 6 alkyl, C 3 to C 6 cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, and CO(C 1 to C 6 alkyl); or

R 5 and R 6 are joined to form a 5 or 6-membered heterocyclic ring optionally substituted by one or more of halogen, C 1 to C 6 alkyl, C 1 to C 6 alkoxy, C 1 to C 6 hydroxyalkyl, C 3 to C 6 cycloalkyl, C 1 to C 6 alkyl containing 1 to 3 fluorine atoms, C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl, or CONH 2 ;

or a pharmaceutically acceptable salt or prodrug thereof.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 20, 2022
From: ASANA BIOSCIENCES, LLC
To: ABS DEVELOPMENT 1, INC.
Reel/Frame 059968/0937 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2018
From: THOMPSON, SCOTT; VENKATESAN, ARANAPAKAM; PRIESTLEY, TONY; KUNDU, MRINAL; SAHA, ASHIS
To: ENDO PHARMACEUTICALS INC.
Reel/Frame 045062/0123 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2018
From: ENDO PHARMACEUTICALS INC.
To: ASANA BIOSCIENCES, LLC
Reel/Frame 045062/0195 →
Continuity (3)
Continuation 15105526
Provisional Application 61916499 · Dec 16, 2013
Related Publication 20180186793A1 · Jul 5, 2018