Synthesis and structure activity relationships of potent new angiotensin converting enzyme inhibitors containing saturated bicyclic amino acids
作者:C. J. Blankley、J. S. Kaltenbronn、D. E. DeJohn、A. Werner、L. R. Bennett、G. Bobowski、U. Krolls、D. R. Johnson、W. M. Pearlman
DOI:10.1021/jm00389a006
日期:1987.6
The synthesis of a series of novel, potentangiotensinconvertingenzyme (ACE) inhibitors containing saturated bicyclic amino acids in place of proline is described. Octahydroindole-2-carboxylic acid, octahydroisoindole-1-carboxylic acid, and octahydro-3-oxoisoindole-1-carboxylic acid can replace proline in both sulfhydryl and non-sulfhydryl ACE inhibitors to give compounds equipotent to captopril
Angiotensin-converting enzyme inhibitors: importance of the amide carbonyl of mercaptoacyl amino acids for hydrogen bonding to the enzyme
作者:Michael E. Condon、Edward W. Petrillo、Denis E. Ryono、Joyce A. Reid、Richard Neubeck、Mohindar Puar、James E. Heikes、Emily F. Sabo、Kathryn A. Losee
DOI:10.1021/jm00345a011
日期:1982.3
A series of mercaptoacyl amino acids and related compounds was synthesized and evaluated for inhibition of angiotensin-converting enzyme (ACE) in order to determine the nature and importance of the putative interaction between ACE and the amide moiety of inhibitors such as captopril (3-mercapto-2-methylpropanoyl-L-proline). It was concluded that the interaction involves a hydrogen bond from a donor site on ACE to the oxygen of the amide carbonyl. Compounds in which the amide moiety is replaced by other groups (ester, ketone, sulfonamide) capable of accepting a hydrogen bond are effective inhibitors, but compounds in which only the geometrical features of the amide are retained are ineffective inhibitors. The presence of an NH group is not necessary for effective inhibition. The activity of a series of mercaptoacyl cycloalkyl carboxylic acids parallels the activity of the isosteric series of mercaptoacyl imino acids.