Thorsett E D, Harris E E, Peterson E R, Greenlee W J, Patchett A A, Ulm E H, Vassil T C
Proc Natl Acad Sci U S A. 1982 Apr;79(7):2176-80. doi: 10.1073/pnas.79.7.2176.
Several phosphonamides, phosphoramides, and phosphates having the general structure R-Y-P(O)(OH)-X-CH(CH3)-CO-Pro have been synthesized and tested for inhibition of angiotensin-converting enzyme (dipeptidyl carboxypeptidase; peptidyl-dipeptide hydrolase, EC 3.4.15.1). Inhibition was found to depend on the nature of R, Y, and X such that the maximal effect was observed when X = NH, Y = CH2, and R = phi CH2 (50% inhibition at 7 nM). Substitution of CH2 or O at X and O at Y produced significantly less potent inhibitors. Groups shorter or longer than R = phi CH2 led to less active inhibitors, presumably due to nonoptimal interaction of the side chain with the S1 subsite.
已经合成了几种具有通式R-Y-P(O)(OH)-X-CH(CH3)-CO-Pro的磷酰胺、磷酰酰胺和磷酸盐,并测试了它们对血管紧张素转换酶(二肽基羧肽酶;肽基二肽水解酶,EC 3.4.15.1)的抑制作用。发现抑制作用取决于R、Y和X的性质,当X = NH、Y = CH2且R = phi CH2时观察到最大效果(在7 nM时50%抑制)。在X处用CH2或O取代以及在Y处用O取代会产生效力明显较低的抑制剂。比R = phi CH2短或长的基团导致活性较低的抑制剂,推测是由于侧链与S1亚位点的相互作用不理想。