Patent ID: 8324387

Claim:
A compound represented by formula (2): wherein A 1 represents ═C(R 7 )—, and A 2 represents a nitrogen atom; each of R 1 and R 4 independently represents a halogen atom or a hydrogen atom; each of R 2 and R 3 independently represents a C1-C6 acyclic hydrocarbon group optionally substituted with one or more members selected from Group X; a C3-C6 alicyclic hydrocarbon group optionally substituted with one or more members selected from Group X; a phenyl group optionally substituted with one or more members selected from Group Y; a benzyl group optionally substituted with one or more members selected from Group Y; a 5- or 6-membered heterocyclic group optionally substituted with one or more members selected from Group Y; —OR 8 ; —NR 8 R 9 ; —NR 8 C(O)R 9 ; —S(O) m R 8 ; —CO 2 R 10 ; —CONR 8 R 9 ; —CONR 10 NR 11 R 12 ; a cyano group; a nitro group; a halogen atom; or a hydrogen atom; each of R 5a and R 6a independently represents a C1-C6 acyclic hydrocarbon group which is substituted with one or more halogen atoms; a C3-C6 alicyclic hydrocarbon group which is substituted with one or more halogen atoms; —OR 13a ; —S(O) m R 13a ; a halogen atom; or a hydrogen atom; provided that both R 5a and R 6a may not simultaneously represent members selected from the group consisting of a halogen atom and a hydrogen atom; R 7 represents a C1-C3 alkyl group optionally substituted with one or more halogen atoms; a C1-C3 alkoxy group optionally substituted with one or more halogen atoms; a cyano group; a halogen atom; or a hydrogen atom; each of R 8 and R 9 independently represents a C1-C6 acyclic hydrocarbon group optionally substituted with one or more members selected from Group X; a C3-C6 alicyclic hydrocarbon group optionally substituted with one or more members selected from Group X; a phenyl group optionally substituted with one or more members selected from Group Y; a 5- or 6-membered heterocyclic group optionally substituted with one or more members selected from Group Y; or a hydrogen atom; provided that R 8 does not represent a hydrogen atom when m in —S(O) m R 8 is 1 or 2; R 10 represents a C1-C4 alkyl group optionally substituted with one or more halogen atoms; or a hydrogen atom; each of R 11 and R 12 independently represents a C1-C4 alkyl group optionally substituted with one or more halogen atoms; a C2-C4 alkoxycarbonyl group; or a hydrogen atom; R 13a represents a C1-C6 acyclic hydrocarbon group which is substituted with one or more halogen atoms; or a C3-C6 alicyclic hydrocarbon group which is substituted with one or more halogen atoms; m represents 0, 1, or 2; n represents 0 or 1; Group X represents one selected from the group consisting of a C1-C4 alkoxy group optionally substituted with one or more halogen atoms; a cyano group; and a halogen atom; and Group Y represents one selected from the group consisting of a C1-C4 alkyl group optionally substituted with one or more halogen atoms; a C1-C4 alkoxy group optionally substituted with one or more halogen atoms; a cyano group; a nitro group; and a halogen atom.