Patent ID: 7902369

Claim:
A compound of the formula (I): wherein: R 1 is selected from the group consisting of: quinoline-6-yl, quinoline-7-yl, isoquinoline-7-yl, isoquinoline-6-yl, 2-methylquinoline-6-yl, isoquinoline-3-yl, 2-methoxyquinoline-6-yl, 3-methoxyquinoline-6-yl, 2-dimethylamino-quinoline-6-yl, 2-chloro-3-ethyl-quinoline-6-yl, 2-morpholine-4-yl-quinoline-6-yl, 2-(4-methylpiperazine-1-yl)-quinoline-6-yl, 2-pyrrolidine-1-yl-quinoline-6-yl, 2-methanesulfonyl-quinoline-6-yl, 2-isopropyl-methylamino-quinoline-6-yl, 2-(2-hydroxy-2-methyl-propyl)-quinoline-6-yl, and 2-(2-hydroxy-2-methyl-propyl)-1-oxo-isoquinoline-6-yl; R 2 represents a substituent selected from the group consisting of: hydrogen atom, lower alkyl group, cyano group, lower alkyloxy group, lower alkyloxycarbonyl group, and trialkylsilyl group; R3 is a phenyl group, which is unsubstituted or substituted with 1 to 3 groups selected from the group consisting of: halogen atom, lower alkyl group, cyano group, nitro group, lower alkyloxy group, hydroxy group, and amino group, wherein the lower alkyl group is unsubstituted or substituted with a halogen atom; or a pharmaceutically acceptable salt thereof.