Patent ID: 8680120

Claim:
A compound represented by the general formula (I) or a pharmaceutically acceptable salt thereof: [wherein A represents a group selected from the group consisting of the following a) to e): X represents a hydrogen atom or a halogen atom; Y 1 represents a methylene group; Y 2 represents a single bond; R 1 represents a hydrogen atom; R 2 represents a group selected from the group consisting of the following f) to j): f) a branched C 3-6 alkyl group, g) a halo-C 1-6 alkyl group, h) a C 3-6 cycloalkyl group, i) a phenyl group, in which the ring is unsubstituted or substituted with 1 to 5 groups independently selected from the group consisting of: a halogen atom, a C 1-6 alkyl group, a halo-C 1-6 alkyl group, a hydroxy-C 1-6 alkyl group, a C 1-6 alkoxy group and a cyano group, and j) a 5-membered aromatic heterocyclic group, in which the ring is unsubstituted or substituted with 1 to 3 groups independently selected from the group consisting of: a halogen atom, a C 1-6 alkyl group, a halo-C 1-6 alkyl group, a hydroxy-C 1-6 alkyl group, a C 1-6 alkoxy group and a cyano group; R 3 represents a halogen atom, a methyl group or a C 1-6 alkoxy group; R 4 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, or a C 1-6 alkoxy group; and R 5 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, or a C 1-6 alkoxy group.