Patent ID: 8551991

Claim:
A compound represented by the following formula (1) or a salt thereof: wherein R 1 represents a halogen atom, a lower alkyl group, a hydroxy group, an ester of a hydroxy group, a lower alkoxy group, a lower alkylthio group, an amino group, an amide of an amino group, an amide of a lower alkylamino group, a lower alkylcarbonyl group, a carboxy group, an ester of a carboxy group, a nitro group or a cyano group; in the case where R 1 is a lower alkyl group or a lower alkoxy group, the lower alkyl group or lower alkoxy group may have one or a plurality of substituents selected from the group consisting of a halogen atom, a hydroxy group and a lower alkoxy group; p represents 1, 2 or 3; in the case where p is 2 or 3, each R 1 may be the same or different; q represents 0; R 3 represents a hydrogen atom; R 4 and R 5 are the same or different and represent a lower alkyl group; R 6 represents a hydrogen atom, a lower alkyl group or a lower alkenyl group; A represents a lower alkylene group; R 7 represents OR 8 or NR 8 R 9 ; R 8 and R 9 are the same or different and represent a hydrogen atom, or a carbon-containing substituent selected from the group consisting of an aryl group, an arylcarbonyl group or an heterocyclic carbonyl group; in the case where R 8 or R 9 is an aryl group, an arylcarbonyl group or a heterocyclic carbonyl group, the aryl group, arylcarbonyl group or heterocyclic carbonyl group may have one or a plurality of substituents selected from the group consisting of a halogen atom, a lower alkyl group, a lower alkyl group substituted with at least a halogen atom, a lower alkyl group substituted with at least a hydroxy group, a lower alkenyl group, an aryl group, a lower alkoxy group, a lower alkylcarbonyl group, an ester of a carboxy group, a nitro group and a cyano group; in the case where R 7 is NR 8 R 9 , if one of R 8 or R 9 is a hydrogen atom, then the other of R 8 or R 9 is said carbon-containing substituent; and X represents O.