Compounds of the formula ##STR1## wherein X.sub.1 is ##STR2## are disclosed. These compounds possess inhibitory activity against angiotensin converting enzyme and neutral endopeptidase and thus are useful as cardiovascular agents.
本发明揭示了分子式为##STR1##其中X.sub.1为##STR2##的化合物。这些化合物具有抑制
血管紧张素转化酶和
中性内肽酶的活性,因此可用作心血管药物。