Patent ID: 8283465

Claim:
A compound represented by the following formula [I], or a pharmaceutically acceptable salt thereof, or a solvate thereof: wherein the partial structural formula: is a group represented by: R 1 is (1) a hydrogen atom, (2) a C 1-6 alkyl group, (3) a C 6-14 aryl group, (4) a C 3-8 cycloalkyl group, (5) a C 6-14 aryl-C 1-6 alkyl group, or (6) a C 3-8 cycloalkyl-C 1-6 alkyl group; R 2 is (2) a C 1-10 alkyl group, (3) a C 6-14 aryl group optionally substituted by the same or different 1 to 5 substituents selected from the following group B, (4) a C 3-8 cycloalkyl group optionally substituted by the same or different 1 to 5 substituents selected from the following group B, (5) a C 3-8 cycloalkenyl group optionally substituted by the same or different 1 to 5 substituents selected from the following group B, (6) a heteroaryl group optionally substituted by the same or different 1 to 5 substituents selected from the following group B (wherein the heteroaryl has, besides carbon atom, 1 to 6 hetero atoms selected from nitrogen atom, oxygen atom and sulfur atom), (7) a C 6-14 aryl-C 1-6 alkyl group (wherein C 6-14 aryl is optionally substituted by the same or different 1 to 5 substituents selected from the following group B), or (8) a C 3-8 cycloalkyl-C 1-6 alkyl group (wherein C 3-8 cycloalkyl is optionally substituted by the same or different 1 to 5 substituents selected from the following group B); R 3 is (1) a hydrogen atom, (2) a halogen atom, (3) a C 1-6 alkyl group, (4) a C 6-14 aryl group, (5) a C 3-8 cycloalkyl group, or (6) a C 6-14 aryl-C 1-6 alkyl group; and R 4 and R 5 are each independently (1) a hydrogen atom, or (2) a C 1-6 alkyl group, group B: (a) a halogen atom, (b) a C 1-6 alkyl group, (c) a C 3-8 cycloalkyl group, (d) a cyano group, and (e) a halo-C 1-6 alkyl group.