Renin inhibitors containing conformationally restricted P1-P1' dipeptide mimetics
作者:Peter D. Williams、Debra S. Perlow、Linda S. Payne、M. Katherine Holloway、Peter K. S. Siegl、Terry W. Schorn、Robert J. Lynch、John J. Doyle、John F. Strouse
DOI:10.1021/jm00107a004
日期:1991.3
removal and acylation with Boc-Phe-His. The aldol diastereomer having the S configuration at the two newly generated stereogenic centers gave optimal enzyme inhibition. Potency was further enhanced in the gamma-lactam ring series by substitution with small hydrophobic groups to mimic the P1' side chain of the renin substrate. Thus, 2(S)-[(Boc-L-phenylalanyl-L-histidyl)amino]-3-cyclohexyl-1(S)-hydroxyl-1
研究了一系列基于ACHPA(4(S)-氨基-5-环己基-3(S)-羟基戊酸)设计的含有内酰胺桥连的P1-P1'二肽模拟物的肾素抑制剂。通过将各种内酰胺与Nα-Boc-L-环己基丙氨酸丙二醛醛醇缩合,然后将Boc基团去除并用Boc-Phe-His酰化,获得抑制剂。在两个新产生的立体异构中心具有S构型的羟醛非对映异构体提供了最佳的酶抑制作用。通过用小的疏水基团取代来模拟肾素底物的P1'侧链,可进一步增强γ-内酰胺环系列的效价。因此,2(S)-[((Boc-L-苯丙氨酰基-L-组氨酸基)氨基] -3-环己基-1(S)-羟基-1-(1,5,5-三甲基-2-氧吡咯烷-3( S)-基)丙烷(34)在人血浆肾素测定中的IC50为1.3 nM。内酰胺氮上的多种取代基是可以耐受的,可用于改变抑制剂的物理性质。通过使用人肾素活性位点模型,提出了酶抑制剂复合物中34的构象。此建模的构象与2(S)-[((Boc-L-苯丙氨酰基-L-组氨酸基)氨基]