Fused heterocyclic compounds and use thereof

A fused heterocyclic compound of formula (1):

• wherein,
• m represents 0, 1 or 2,
• R1, R2, R3 and R4 are the same or different and represent a C1-C6 chain hydrocarbon group optionally substituted with one or more members selected from the group X, a C3-C6 alicyclic hydrocarbon group optionally substituted with one or more members selected from the group X, a phenyl group optionally substituted with one or more members selected from the group Y, a benzyl group optionally substituted with one or more members selected from the group Y, a 5-membered heterocyclic group or 6-membered heterocyclic group optionally substituted with one or more members selected from the group Y, —OR8, —NR8R9, —NR8C(O)R9, —S(O)mR8, —SO2Cl, —SO2NR8R9, —CO2R10, —CONR8R9, —CONR10NR11R12, a cyano group, a nitro group, a halogen atom or a hydrogen atom,
• R5 represents a C1-C4 chain hydrocarbon group optionally substituted with one or more halogen atoms, a cyclopropyl group optionally substituted with one or more halogen atoms, a cyclopropylmethyl group optionally substituted with one or more halogen atoms, —OR13, —NR13R14 or a cyano group,
• R6 and R7 are the same or different and represent a C1-C4 chain hydrocarbon group substituted with one or more halogen atoms, —OR15, —S(O)mR15, a halogen atom or a hydrogen atom (here, either R6 or R7 represents a C1-C4 chain hydrocarbon group substituted with one or more halogen atoms, —OR15, —S(O)mR15), alternatively R6 and R7 may be bonded to form a 5-membered ring or 6-membered ring substituted with one or more halogen atoms together with carbon atoms to which R6 and R7 are connected,
• R8 and R9 are the same or different and represent a C1-C6 chain hydrocarbon group optionally substituted with one or more members selected from the group X, a C3-C6 alicyclic hydrocarbon group optionally substituted with one or more members selected from the group X, a phenyl group optionally substituted with one or more members selected from the group Y, a benzyl group optionally substituted with one or more members selected from the group Y, a 5-membered heterocyclic group or 6-membered heterocyclic group optionally substituted with one or more members selected from the group Y, or a hydrogen atom (concerning —S(O)mR8, m represents the same meaning as described above, but when m represents 1 or 2, R8 does not represent a hydrogen atom),
• R10 represents a C1-C4 alkyl group optionally substituted with one or more halogen atoms, or a hydrogen atom,
• R11 and R12 are the same or different and represents a C1-C4 alkyl group optionally substituted with one or more halogen atoms, a C2-C5 alkoxycarbonyl group or a hydrogen atom,
• R13 and R14 are the same or different and represents a C1-C3 chain hydrocarbon group optionally substituted with one or more halogen atoms, a cyclopropyl group optionally substituted with one or more halogen atoms, or a hydrogen atom,
• R15 represents a C1-C4 chain hydrocarbon group substituted with one or more halogen atoms, and
• n represents 0 or 1;
• wherein
• group X is selected from the group consisting of a C1-C4 alkoxy group optionally substituted with one or more halogen atoms, —CO2R16 (here, R16 represents a C1-C4 alkyl group optionally substituted by a halogen), a cyano group and a halogen atom;
• and wherein
• group Y is 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.