Novel piperazine derivatives, processes for production thereof, and pharmaceutical compositions comprising said compounds as active ingredient
申请人:KANEBO, LTD.
公开号:EP0159566A1
公开(公告)日:1985-10-30
A 1-benzyl-4-benzhydrylpiperazine derivative represented by the following general formula (I)
wherein R1 represents a hydrogen atom or a methoxy group, and R2 represents a hydrogen or fluorine atom, or a pharmaceutically acceptable acid addition salt thereof.
The 1-benzyl-4-benzhydrylpiperazine derivative or an acid addition salt thereof is prepared by reductively condensing a benzaldehyde derivative with a fluorobenzhydrylpiperazine, or condensing a benzyl halide derivative with a fluorobenzhydrylpiperazine optionally in the presence of an acid acceptor, or condensing a benzylpiperazine with a fluorobenzhydryl halide derivative and, optionally converting the product to its acid addition salt.
The 1-benzyl-4-benzhydrylpiperazine derivative is useful for improving a cerebrovascular disease.
由以下通式(I)代表的 1-苄基-4-二氢哌嗪衍生物
其中 R1 代表氢原子或甲氧基,R2 代表氢原子或氟原子,或其药学上可接受的酸加成盐。
1-苄基-4-苯二甲酰基哌嗪衍生物或其酸加成盐的制备方法为:将苯甲醛衍生物与氟苯二甲酰基哌嗪还原缩合,或将苄基卤化物衍生物与氟苯二甲酰基哌嗪缩合(可选择在有酸接受体存在的情况下),或将苄基哌嗪与氟苯二甲酰基卤化物衍生物缩合,并可选择将产物转化为其酸加成盐。
1-苄基-4-二苯甲基哌嗪衍生物可用于改善脑血管疾病。