Patent ID: 7960425

Claim:
A compound represented by the formula (I): wherein R 1 is a phenyl group which may be substituted with one or more C 1-6 alkyl groups, one or more C 1-3 alkyl groups substituted with one or more halogen atoms, or one or more halogen atoms; R 2 is a hydrogen atom or a C 1-3 alkyl group which may be substituted with one or more halogen atoms; R 3 is a thienyl group substituted with (C═O)NR 5 R 6 wherein R 5 is a hydrogen atom or a C 1-3 alkyl group which may be substituted with one or more halogen atoms, and R 6 is a C 1-6 alkyl group which may be substituted with one or more halogen atoms, one or more hydroxyl groups, one or more C 1-3 alkoxy groups which may be substituted with one or more halogen atoms, one or more phenyl groups, one or more thienyl groups, one or more furyl groups or one or more pyridyl groups; and R 4 is a C 1-3 alkyl group which may be substituted with one or more halogen atoms; a tautomer or pharmaceutically acceptable salt of the compound or a solvate thereof.