New compounds, possessing angiotensin converting enzyme inhibition activity and thus useful as hypotensive agents, have the formula
wherein R is
or
X is an oxo substituted thiazine or thiazepine, and R,, R2, R3 and R4 are as defined herein.
具有
血管紧张素转换酶抑制活性从而可用作降血压剂的新化合物具有如下式子 其中 R 是或 X 是氧代取代的
噻嗪或
硫氮杂卓,R、R2、R3 和 R4 如本文所定义。