An object of the present invention is to provide a medicinal drug much improved in anti tumor activity and excellent in safety. According to the present invention, there is provided a medicinal drug containing a compound represented by the following general formula (1) or a salt thereof as an active ingredient: [Formula 1] wherein X1 represents a nitrogen atom or a group —CH═, R1 represents a group —Z—R6, in which Z represents a group —CO—, a group —CH(OH)— or the like, R6 represents a 5- to 15-membered monocyclic, dicyclic or tricyclic saturated or unsaturated heterocyclic group having 1 to 4 nitrogen atoms, oxygen atoms or sulfur atoms, R2 represents a hydrogen atom or a halogen atom, Y represents a group —O—, a group —CO—, a group —CH(OH)— or a lower alkylene group, and A represents [Formula 2] wherein R3 represents a hydrogen atom, a lower alkoxy group or the like, p represents 1 or 2, R4 represents an imidazolyl lower alkyl group or the like.
本发明的目的是提供一种在抗肿瘤活性方面得到显著改善且安全性优异的药物。根据本发明,提供了一种含有以下通式(1)所代表的化合物或其盐作为活性成分的药物:[公式1] 其中,X1代表氮原子或基团-CH═,R1代表基团-Z-R6,其中Z代表基团-CO-、基团-CH(OH)-或类似的基团,R6代表具有1到4个氮原子、氧原子或
硫原子的5至15个成员的单环、双环或
三环饱和或不饱和杂环基团,R2代表氢原子或卤素原子,Y代表基团-O-、基团-CO-、基团-CH(OH)-或较低的烷基链,A代表[公式2] 其中,R3代表氢原子、较低的烷氧基或类似的基团,p代表1或2,R4代表
咪唑基较低烷基基团或类似基团。