NOVEL COMPLEX AMIDO AND IMIDO DERIVATIVES OF CARBOXYALKYL PEPTIDES AND THIOETHERS AND ETHERS OF PEPTIDES

摘要

Novel inhibitors of angiotensin converting enzyme are disclosed which have the general formula wherein R1 and/or R3 form complex amides and imides thereof, X = S, O or NR9, R4 and R5 form with -N-C- a 4-6 membered ring structure as described and the other R substituents are selected from a variety of disclosed groups.