Studies directed toward the design of orally active renin inhibitors. 1. Some factors influencing the absorption of small peptides
作者:Saul H. Rosenberg、Kenneth P. Spina、Keith W. Woods、Jim Polakowski、Donald L. Martin、Zhengli Yao、Herman H. Stein、Jerome Cohen、Jennifer L. Barlow
DOI:10.1021/jm00056a005
日期:1993.2
A systematic evaluation of structure-absorption relationships using a high throughput intraduodenal rat screening model has led to the delineation of a set of structural parameters that appear to govern bioavailability in a series of peptide-based renin inhibitors. Optimum structures, exemplified by 25 and 41, incorporated a single, solubilizing substituent at the C- or N-terminus combined with a lipophilic P2-site residue. Both inhibitors gave unprecedented plasma drug levels upon intraduodenal administration to monkeys, and the calculated bioavailability for 41 (14 +/- 4%) is the highest reported for any peptidic renin inhibitor.