Patent ID: 8470738

Claim:
A pyridazinone compound represented by the formula (I): wherein R 1 represents a C 1-6 alkyl group or a (C 1-6 alkyloxy)C 1-6 alkyl group; R 2 represents a hydrogen atom or a C 1-6 alkyl group; G represents a hydrogen atom or a group represented by any one of the following formulas: (wherein L represents an oxygen or sulfur atom, R 3 represents a C 1-6 alkyl group, a C 3-8 cycloalkyl group, a C 2-6 alkenyl group, a C 2-6 alkynyl group, a C 6-10 aryl group, a (C 6-10 aryl)C 1-6 alkyl group, a C 1-6 alkyloxy group, a C 3-8 cycloalkyloxy group, a C 2-6 alkenyloxy group, a C 3-6 alkynyloxy group, a C 6-10 aryloxy group, a (C 6-10 aryl) C 1-6 alkyloxy group, a di(C 1-6 alkyl)amino group, a di(C 2-6 alkenyl)amino group, a (C 1-6 alkyl)(C 6-10 aryl)amino group or a 3- to 8-membered nitrogen-containing heterocyclic group, R 4 represents a C 1-6 alkyl group, a C 6-10 aryl group or a di(C 1-6 alkyl)amino group, and R 5 and R 6 may be the same as or different from each other, and represent a C 1-6 alkyl group, a C 3-8 cycloalkyl group, a C 2-6 alkenyl group, a C 6-10 aryl group, a C 1-6 alkyloxy group, a C 3-8 cycloalkyloxy group, a C 6-10 aryloxy group, a (C 6-10 aryl)C 1-6 alkyloxy group, a C 1-6 alkylthio group or a di(C 1-6 alkyl)amino group, wherein any group represented by R 3 , R 4 , R 5 and R 6 may be substituted with at least one halogen atom, and the C 3-8 cycloalkyl group, the C 6-10 aryl group, the aryl moiety of the (C 6-10 aryl)C 1-6 alkyl group, the C 3-8 cycloalkyloxy group, the C 6-10 aryloxy group, the aryl moiety of the (C 6-10 aryl)C 1-6 alkyloxy group, the aryl moiety of the (C 1-6 alkyl)(C 6-10 aryl)amino group and the 3- to 8-membered nitrogen-containing heterocyclic group may be substituted with at least one C 1-6 alkyl group); Z 1 represents a C 1-6 alkyl group or a C 1-6 alkyloxy group; Z 2 represents a C 3-8 cycloalkyl group, a C 2-6 alkynyl group, a C 1-6 alkyloxy group, a C 1-6 haloalkyl group, a C 1-6 haloalkyloxy group, a halogen atom, a C 6-10 aryl group, a 5- or 6-membered heteroaryl group, a cyano group or a nitro group, and Z 3 represents a C 1-6 alkyl group, a C 3-8 cycloalkyl group, a C 2-6 alkynyl group, a C 1-6 alkyloxy group, a C 1-6 haloalkyl group, a C 1-6 haloalkyloxy group, a halogen atom, a C 6-10 aryl group, a 5- or 6-membered heteroaryl group, a cyano group or a nitro group, wherein the C 3-8 cycloalkyl group, the C 6-10 aryl group and the 5- or 6-membered heteroaryl group represented by Z 2 and Z 3 may be substituted with at least one group selected from the group consisting of a halogen atom and a C 1-6 alkyl group; and n represents 0, 1, 2 or 3, and when n is 2 or 3, each of Z 3 may be the same as or different from each other.