Patent ID: 7803837

Claim:
A compound of Formula (I): or a pharmaceutically acceptable salt, hydrate or solvate thereof, wherein: R 1 is H or C 1-6 alkyl; R 2 is H, halogen, C 1-4 alkyl or C 1-4 haloalkyl; and R 3 is heteroaryl, which is optionally substituted with 1 to 4 substituents independently selected from the group consisting of C 1-6 acyloxy, C 2-6 alkenyl, C 1-6 alkoxy, C 1-6 alkyl, C 1-6 alkylcarboxamide, C 2-6 alkynyl, C 1-6 alkylsulfonamide, C 1-6 alkylsulfinyl, C 1-6 alkylsulfonyl, C 1-6 alkylthio, C 1-6 alkylureyl, C 1-6 alkylamino, amino, aryl, substituted aryl, carbo-C 1-6 -alkoxy, carboxamide, cyano, C 3-7 cycloalkyl, C 2-6 dialkylamino, C 2-6 dialkylcarboxamide, C 2-6 dialkylsulfonamide, halogen, C 1-6 haloalkoxy, C 1-6 haloalkyl, C 1-6 haloalkylsulfinyl, C 1-6 haloalkylsulfonyl, C 1-6 haloalkylthio, heteroaryl, substituted heteroaryl, hydroxyl, nitro and thiol; and R 4 is selected from the group consisting of H, C 1-6 alkyl C 3-6 - cycloalkyl and C 1-6 haloalkyl wherein each are optionally substituted with 1 to 5 substituents independently selected from the group consisting of C 1-6 acyloxy, C 2-6 alkenyl, C 1-6 alkoxy, C 1-6 alkylcarboxamide, C 2-6 alkynyl, C 1-6 alkylsulfonamide, C 1-6 alkylsulfinyl, C 1-6 alkylsulfonyl, C 1-6 alkylthio, C 1-6 alkylureyl, C 1-6 alkylamino, amino, carbo-C 1-6 -alkoxy, carboxamide, cyano, C 3-7 cycloalkyl, C 2-6 dialkylamino, C 2-6 dialkylcarboxamide, C 2-6 dialkylsulfonamide, halogen, C 1-6 haloalkoxy, C 1-6 haloalkyl, C 1-6 haloalkylsulfinyl, C 1-6 haloalkylsulfonyl, C 1-6 haloalkylthio, hydroxyl, nitro and thiol.