The present invention relates to a compound represented by general formula [1] satisfying the following (I) or (II), or a pharmaceutical acceptable salt of the compound.(I) X is CH or N； R1 is a halogen atom, and R2 is H, a halogen atom, CN, [2], [3], [8], [9], an —O-alkyl, an —O-(saturated ring), etc.[2]: —C(RC)(RD)(RE) (RC to RE each are H, an alkyl, etc.)[3]: —N(RF)(RG) (RF and RG each are H, OH, amino, a (hetero)aryl, etc.)[8]: —C(═O)RL (RL is an alkyl, OH, an alkoxy, amino, etc.)[9]: a (substituted)phenyl；(II) X is >；C—C(—O)RB (RB is a (substituted)amino, an alkoxy, OH, etc.)；R1 is a halogen atom； R2 is H； R3 is H or OH； and R3 and R4 each are H or an alkyl.
