申请人:Pierrel S.p.A.
公开号:US04579861A1
公开(公告)日:1986-04-01
Compounds having general formula I ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower alkoxy, alkyl enoxy, halogen, cyano, carboxyamido or ureido group optionally separated from the phenyl ring by a methylene or ethylene bridge; R.sub.2 is hydrogen, halogen, lower alkyl or alkoxy; R.sub.3 is hydrogen, halogen, lower alkyl, lower alkoxy or R.sub.2 and R.sub.3, taken together, are a methylendioxy group; R.sub.4 is hydrogen or lower alkyl, endowed with remarkable cardioselective .beta.-adrenolytic properties, are described. The process for their preparation and pharmaceutical compositions containing them are also described.
通式I ##STR1## 中的化合物,其中R.sub.1是氢、低烷基、低烷氧基、烷氧基、卤素、氰基、羧胺基或尿素基,可选地与苯环通过亚甲基或乙烯桥分隔;R.sub.2是氢、卤素、低烷基或烷氧基;R.sub.3是氢、卤素、低烷基、低烷氧基或R.sub.2和R.sub.3一起是亚甲二氧基基团;R.sub.4是氢或低烷基,具有显著的心脏选择性β-肾上腺素受体阻滞作用。还描述了它们的制备方法和含有它们的药物组合物。