Patent ID: 8557738

Claim:
A nitrogen-containing heterocyclic compound represented by formula (IV), or a salt thereof: wherein, R 3 ,R 4 , R 5 , and R 6 each independently represents a hydrogen atom, unsubstituted or substituted C 1-20 alkyl group, unsubstituted or substituted C 2-20 alkenyl group, unsubstituted or substituted C 2-20 alkynyl group, unsubstituted or substituted C 3-20 cycloalkyl group, unsubstituted or substituted C 4-20 cycloalkenyl group, unsubstituted or substituted C 8-20 cycloalkynyl group, unsubstituted or substituted C 6-10 aryl group, unsubstituted or substituted heterocyclic group, unsubstituted or substituted C 1-20 acyl group, unsubstituted or substituted (1-imino)C 1-20 alkyl group, unsubstituted or substituted hydroxyl group, unsubstituted or substituted amino group, unsubstituted or substituted mercapto group, unsubstituted or substituted sulfonyl group, halogeno group or cyano group; a plurality of R 3 ,R 4 , R 5 , and R 6 may be selected and bond together to form an unsubstituted or substituted 3- to 8-membered ring; R 3 and R 4 , or R 5 and R 6 may bond together to form an oxo group, thioxo group or unsubstituted or substituted imino group; A-B, in which A represents a carbon atom and B represents a nitrogen atom, represents the formula: C═N, the formula: CR 7 —NR 8 , the following formula (II) or the following formula (III); R 7 represents a hydrogen atom, unsubstituted or substituted C 1-20 alkyl group, unsubstituted or substituted C 2-20 alkenyl group, unsubstituted or substituted C 2-20 alkynyl group, unsubstituted or substituted C 1-20 acyl group, unsubstituted or substituted hydroxyl group, unsubstituted or substituted amino group, unsubstituted or substituted mercapto group, halogeno group or cyano group; R 8 represents a hydrogen atom, unsubstituted or substituted C 1-20 alkyl group, unsubstituted or substituted C 2-20 alkenyl group, unsubstituted or substituted C 2-20 alkynyl group, or unsubstituted or substituted C 1-20 acyl group; Y represents an oxygen atom, sulfur atom or sulfinyl group; X and X′ each independently represents an unsubstituted or substituted C 1-20 alkyl group, unsubstituted or substituted C 2-20 alkenyl group, unsubstituted or substituted C 2-20 alkynyl group, unsubstituted or substituted C 3-20 cycloalkyl group, unsubstituted or substituted C 4-20 cycloalkenyl group, unsubstituted or substituted C 8-20 cycloalkynyl group, unsubstituted or substituted C 6-10 aryl group, unsubstituted or substituted heterocyclic group, unsubstituted or substituted C 1-20 acyl group, unsubstituted or substituted (1-imino) C 1-20 alkyl group, unsubstituted or substituted hydroxyl group, unsubstituted or substituted amino group, unsubstituted or substituted mercapto group, unsubstituted or substituted sulfonyl group, halogeno group, cyano group or nitro group; p represents an integer of 0 to 6; and, n represents an integer of 0 to 4.