Abstract
Using X-ray and NMR data relating to the conformation of the antihypertensive, angiotensin-converting enzyme inhibitor, captopril, and structure—activity relationships of analogues, it has been possible to postulate with the aid of computer graphics, the orientation of the three functions, the thiol, the terminal carboxyl and the carbonyl group which are involved in binding to the enzyme. Bicyclic mimetics of captopril, with related arrays of these functions, have been designed and synthesized. Compounds with the closest approximation to the array in captopril are the most active inhibitors of angiotensin converting enzyme, in vitro.
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