Patent ID: 7897774

Claim:
A compound represented by the following general formula (1) or a salt thereof: wherein the ring X represents which may have one or plural substituents selected from a halogen atom and an alkyl group; R 1 and R 2 may be the same or different and each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aromatic heterocyclic group or a nonaromatic heterocyclic group; in the case where R 1 or R 2 is an alkyl group, the alkyl group may have one or plural substituents selected from an aryl group, a halogenoaryl group and an alkoxyaryl group; in the case where R 1 or R 2 is an aryl group, the aryl group may have one or plural substituents selected from a halogen atom, a hydroxy group, an alkoxy group, a halogenoalkoxy group, an aryloxy group, an alkyl group, a halogenoalkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group, an amino group, an alkylamino group, an arylamino group, a mercapto group, an alkylthio group, an arylthio group, an alkylcarbonyl group, an arylcarbonyl group and a nitro group; R 1 and R 2 may be combined together to form a nonaromatic heterocycle; R 3 represents a quinolyl group, the quinolyl group may have one or plural substituents selected from a halogen atom, a hydroxy group, an alkoxy group, an aryloxy group, an alkyl group and an aryl group, and a nitrogen atom of the quinolyl group may be coordinated with an oxo ligand; A represents a sulfur atom, a sulfinyl group or a sulfonyl group; and B represents an alkylene group.