Compounds are disclosed of general formula
wherein
R1 represents a hydrogen atom or C1-4 alkyl or C2-4 alkenyl group, or the group COANH2, CSANH2, or COANHCOCH2NH2 in which A is methylene optionally substituted by a C1-3 alkyl group; and R2 represents a hydrogen atom or a C1-4 alkyl group; or NR1R2 forms a piperidino, piperazino or N-methylpiperazino group;
R3 represents a C1-4 alkyl group or a benzyl group;
R4 represents a hydrogen or halogen atom; and
R5 represents a hydrogen atom or a C1-4 alkyl or C1-4 alkoxy group, with the proviso that one of R4 and Rs is a hydrogen atom and physiologically acceptable salts and bioprecursors thereof.
The compounds exert efforts on the central nervous system and, in particular exhibit anxiolytic and anti-convulsant activity. The compounds may be formulated with pharmaceutically acceptable carriers or diluents for administration in conventional manner.
公开了通式如下的化合物
式中
R1代表氢原子或C1-4烷基或C2-4烯基,或基团COANH2、CSANH2或COANHCOCH2NH2,其中A是可选被C1-3烷基取代的亚甲基;R2代表氢原子或C1-4烷基;或NR1R2形成
哌啶基、
哌嗪基或
N-甲基哌嗪基;
R3 代表 C1-4 烷基或苄基;
R4 代表氢原子或卤素原子;以及
R5 代表氢原子或 C1-4 烷基或 C1-4 烷氧基,但 R4 和 Rs 之一为氢原子,以及其生理上可接受的盐和
生物前体。
这些化合物可作用于中枢神经系统,尤其具有抗焦虑和抗惊厥活性。这些化合物可与药学上可接受的载体或稀释剂一起配制,以常规方式给药。