申请人:DAIICHI PHARMACEUTICAL CO., LTD.
公开号:EP0784055A1
公开(公告)日:1997-07-16
The present invention provides a novel compound which is represented by formula (I):
wherein preferable examples of R1 to R6 are as follows; R1 and R2 are each an alkyl group optionally substituted by a halogen atom, an amino group, a hydroxyl group, an alkoxyl group or a thiol group, a hydrogen atom, a halogen atom or an alkoxyl group; R3 is a hydrogen atom; R4 is a methyl group; R5 is a hydrogen atom or an alkyl group; and R6 is a group of the formula:
wherein Z is a phenyl group;
and has an antitumor effect.
本发明提供了一种由式(I)表示的新型化合物:
其中 R1 至 R6 的优选实例如下;R1 和 R2 各为可选被卤原子、氨基、羟基、烷氧基或硫醇基、氢原子、卤原子或烷氧基取代的烷基;R3 为氢原子;R4 为甲基;R5 为氢原子或烷基;R6 为式中的基团:
其中 Z 是苯基;
并具有抗肿瘤作用。