Angiotensin converting enzyme inhibitors

Abstract

Angiotensin converting enzyme inhibitors have the formula Z(CH.sub.2).sub.n CHR.sub.1 COOCHR.sub.2 COOH in which Z is --SR.sub.3, --COCHR.sub.4 NHCOR.sub.5, ##STR1## or --NHCHR.sub.7 COOH, R.sub.4, R.sub.5, R.sub.6, and R.sub.7, which may be the same or different, are each phenyl or alkylphenyl C.sub.7-12, R.sub.4 is hydrogen, alkyl C.sub.1-6, NHR.sub.8 or (CH.sub.2).sub.p R.sub.9, R.sub.2 is (CH.sub.2).sub.m XR.sub.10, alkyl C.sub.1-6 optionally substituted by a saturated 5- or 6-membered carbocyclic or heterocyclic ring, alkylhalo C.sub.1-6, alkylcyano C.sub.1-6, or alkyl phenyl C.sub.7-12, the phenyl being optionally substituted by NO.sub.2 or NH.sub.2, X is O, S(O).sub.q, C.dbd.O or NR.sub.11, and R.sub.10 is alkyl C.sub.1-6, alkylhalo C.sub.1-6, alkoxy C.sub.1-6, alkoxy C.sub.1-6 substituted by halogen, alkanoyl C.sub.1-6, S(O).sub.r R.sub.12, NR.sub.13 R.sub.14, phenyl, alkylphenyl C.sub.7-12, naphthalenyl or a 5-membered unsaturated heterocyclic ring, n is an integer from 0 to 6, m and p, which may be the same or different, are each an integer from 1 to 6, R.sub.9 is hydrogen, SR.sub.15 or phenyl optionally substituted by OR.sub.16, R.sub.3 and R.sub.15, which may be the same or different, are each hydrogen or alkanoyl C.sub.1-6, R.sub.8 is hydrogen or COOR.sub.17, q and r, which may be the same or different, are each 0, 1, or 2, R.sub.11, R.sub.13, R.sub.14, R.sub.16, and R.sub.17, which may be the same or different, are each hydrogen or alkyl C.sub.1-6, and R.sub.12 is hydrogen, alkyl C.sub.1-6 or phenyl. The compounds, and salts thereof, are useful as vasodilators.

Dependencies are inferred from the claim text.