A JNK inhibitor containing a compound having an isoquinolinone skeleton or a salt thereof, such as a compound represented by the formula
wherein ring A and ring B are each an optionally substituted benzene ring, X is —O—, —N═, —NR
3
— or —CHR
3
—, R
2
is an acyl group, an optionally esterified or thioesterified carboxyl group, an optionally substituted carbamoyl group or an optionally substituted amino group and the like, a broken line shows a single bond or a double bond, and R
1
is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group and the like, and the like.
含有
异喹啉酮骨架或其盐的JNK
抑制剂,例如由以下式表示的化合物:其中环A和环B均为可选取代的
苯环,X为—O—,—N═,—NR3—或—CHR3—,R2为酰基,可选的
酯化或
硫酯化羧基,可选的取代的
氨基甲酰基或可选的取代的
氨基基团等,破折号表示单键或双键,而R1为
氢原子,可选的取代的
碳氢基团,可选的取代的杂环基团等。