New bicyclic compounds, inclusive of salts thereof, of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represents hydrogen, hydroxyl or lower alkoxy, R.sup.3 is hydrogen or lower alkyl, R.sup.4 is hydrogen, lower alkyl, amino-lower-alkyl or acylamino-lower-alkyl, R.sup.5 is hydrogen, lower alkyl or aralkyl which may be substituted, R.sup.6 is hydroxyl, lower alkoxy, amino or lower alkylamino, and m and n each means 1 or 2, have inhibitory activities of angiotensin converting enzyme and bradykinin decomposing enzyme, and are useful as antihypertensive agents.
新的
双环化合物,包括其盐,
化学式如下:##STR1## 其中R.sup.1和R.sup.2相同或不同,分别代表氢,羟基或低级烷氧基,R.sup.3代表氢或低级烷基,R.sup.4代表氢,低级烷基,
氨基-低级烷基或酰胺基-低级烷基,R.sup.5代表氢,低级烷基或可能被取代的芳基烷基,R.sup.6代表羟基,低级烷氧基,
氨基或低级烷基
氨基,m和n分别表示1或2,具有抑制
血管紧张素转换酶和
缓激肽降解酶的活性,并可用作降压剂。