申请人:Pola Chemical Industries Inc., Japan
公开号:US04992442A1
公开(公告)日:1991-02-12
Pyrrolo[3,2-e]pyrazolo[1,5-a]pyrimidine derivatives are disclosed. The compounds are represented by the formula (I), ##STR1## wherein R.sub.1 and R.sub.2 individually represent a hydrogen atom, a linear or branched alkyl group which may have a substituent, a cycloalkyl or phenyl group which may have a substituent, or a heterocyclic group which may have a substituent, and R.sub.3 is a hydrogen atom or a cyano group. The compounds have excellent circulatory disease curing activities as well as bronchodilation activities.
本文披露了Pyrrolo[3,2-e]pyrazolo[1,5-a]pyrimidine衍生物。该化合物的结构式为(I),其中R.sub.1和R.sub.2分别代表氢原子,线性或支链烷基,可有取代基的环烷基或苯基,或可有取代基的杂环基,R.sub.3是氢原子或氰基。该化合物具有出色的循环系统疾病治疗活性以及支气管扩张作用。