Ksander G M, Yuan A M, Diefenbacher C G, Stanton J L
J Med Chem. 1985 Nov;28(11):1606-11. doi: 10.1021/jm00149a011.
The preparation of two series of N-carbobenzoxy-gamma-D-glutamyl secondary 2S amino acids and (N-substituted gamma-D-glutamyl)indoline-2(S)-carboxylic acid dipeptides is described. In vitro inhibition of angiotensin converting enzyme (ACE) is reported for each compound, and the structure-activity relationship is discussed. Oral and iv inhibition of AI pressor response in vivo of selected compounds in Table II is also discussed. The most potent compounds in vitro, 3 and 6a, had an ACE IC50 of 7 and 2.7 X 10(-9) M, respectively.