3-SUBSTITUTED-2-FURANCARBOXYLIC ACID HYDRAZIDE DERIVATIVE AND PHARMACEUTICALLY ACCEPTABLE SALT THEREOF

摘要

Disclosed are a compound represented by formula (I) and a pharmaceutically acceptable salt thereof. (In the formula, ring A represents a phenylene or the like; R1 represents an optionally substituted C6-10 aryl group or the like; R2 and R3 may be the same or different and each represents a hydrogen atom or a C1-4 alkyl group; R4 represents a hydrogen atom, a halogen atom or the like; R5 and R6 may be the same or different and each represents a hydrogen atom, a halogen atom or the like; X represents an NR7 group or the like; R7 represents a hydrogen atom or the like; R8 represents a cyano group or a nitro group; and n represents 1 or the like.)