Patent ID: 8198271

Claim:
A compound represented by the following formula (1) or a salt thereof: wherein R 1 and R 2 are the same or different and represent a hydrogen atom, a lower alkyl group which may have a substituent, a lower alkenyl group which may have a substituent, a lower alkynyl group which may have a substituent or a group represented by the following formula (2): R 3 represents a hydroxy group, a lower alkoxy group which may have a substituent, a lower cycloalkyloxy group which may have a substituent, an aryloxy group which may have a substituent, a carboxy group, a lower alkoxycarbonyl group which may have a substituent, —NR a R b or a group represented by the following formula (3): R 4 and R 5 are the same or different and represent a halogen atom, a lower alkyl group, a hydroxy group, or a lower alkoxy group; R 6 represents a halogen atom, a lower alkyl group which may have a substituent, an aryl group which may have a substituent, a heterocyclic group which may have a substituent, a hydroxy group, a lower alkoxy group which may have a substituent, a mercapto group, a lower alkylthio group which may have a substituent, a lower alkylcarbonyl group which may have a substituent, an amino group, a nitro group or a cyano group; R 7 represents a lower alkyl group which may have a substituent, a hydroxy group or a lower alkoxy group which may have a substituent; R a and R b are the same or different and represent a hydrogen atom or a lower alkyl group which may have a substituent; the ring A represents a cyclic hydrocarbon or a heterocyclic ring; the ring B represents a heterocyclic ring having one or plural heteroatoms selected from the group consisting of a nitrogen atom and an oxygen atom in the ring; X represents a lower alkylene group which may have a substituent; Y represents a lower alkylene group which may have a substituent; Z represents a single bond or a lower alkylene group which may have a substituent; W 1 -W 2 W represents N—CH or CH—N; and l, m, n and o are the same or different and represent 0, 1, 2 or 3.