Patent ID: 8507410

Claim:
A pyridazinone compound represented by 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 and R 3 are the same or different, and represent hydrogen or a C 1-6 alkyl group, W represents halogen, or any one of the groups represented by the following formulas: wherein R 4 , R 5 , R 7 and R 11 each represent a C 1-6 alkyl group, a C 3-8 cycloalkyl group, a C 3-6 alkenyl group, a C 3-6 alkynyl group, a C 6-10 aryl group or a (C 6-10 aryl)C 1-6 alkyl group, R 12 represents a C 1-6 alkyl group, a C 3-8 cycloalkyl group, a C 3-6 alkenyl group, a C 3-6 alkynyl group, a C 6-10 aryl group or a (C 6-10 aryl)C 1-6 alkyl group, R 6 , R 8 and R 9 each represent 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 3-6 alkenyloxy group, a C 3-6 alkynyloxy group, a C 6-10 aryloxy group or a (C 6-10 aryl)C 1-6 alkyloxy group, R 10 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 3-6 alkenyloxy group, a C 3-6 alkynyloxy group, a C 6-10 aryloxy group or a (C 6-10 aryl)C 1-6 alkyloxy group, or R 9 and R 10 may represent, together with the carbonyl groups to which they are attached and the nitrogen atom to which the carbonyl groups are attached, a 5- or 6-membered cyclic imide group to which a benzene ring may be fused, wherein, any group represented by R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 or R 12 may be substituted with at least one member selected from the group consisting of halogen and C 1-6 alkyloxy groups, the C 3-8 cycloalkyl groups, the C 6-10 aryl groups, and the aryl moieties of the (C 6-10 aryl)C 1-6 alkyl groups which are represented by R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 or R 12 may be substituted with at least one C 1-6 alkyl group, the C 3-8 cycloalkyloxy groups, the C 6-10 aryloxy groups, and the aryl moieties of the (C 6-10 aryl)C 1-6 alkyloxy groups which are represented by R 6 , R 8 , R 9 or R 10 may be substituted with at least one C 1-6 alkyl group, and m represents 0, 1 or 2, Z 1 represents a C 1-6 alkyl group, Z 2 represents a C 1-6 alkyl group, a C 3-8 cycloalkyl group, a C 2-6 alkynyl group, a C 1-6 haloalkyl group, a C 6-10 aryl group, a 5- or 6-membered heteroaryl group, a C 1-6 alkyloxy group, a C 1-6 haloalkyloxy group, halogen, 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 may be substituted with at least one member selected from the group consisting of halogen and C 1-6 alkyl groups, and n represents 0, 1, 2, 3 or 4, and when n is 2, 3 or 4, each Z 2 is the same or different.