Based on studies of structure-activity relationship, trans-4-aminomethylcyclohexanecarbonyl-L-phenylalanine-4-carboxymethylanilide (Tra-Phe-APAA) was designed as a selective plasma kallikrein inhibitor and synthesized. Tra-Phe-APAA inhibited plasma kallikrein with a Ki value of 0.81 μM, while it inhibited glandular kallikrein, plasmin, urokinase, factor Xa and thrombin with Ki values of >500, 390, 200, >500, and >500 μM, respectively. However, its stereoisomer, Tra-D-Phe-APPA did not exhibit any detectable inhibitory activity against the above enzymes.
根据结构活性关系研究,将反式-4-
氨基
甲基环己烷甲酰-
L-苯丙氨酸-4-羧甲基
苯胺(Tra-Phe-AP
AA)设计为选择性血浆激肽释放酶
抑制剂并进行了合成。Tra-Phe-AP
AA对血浆激肽释放酶的抑制作用Ki值为0.81微摩尔,而对腺激肽释放酶、纤溶酶、
尿激酶、因子Xa和凝血酶的抑制作用Ki值分别为>500、390、200、>500和>500微摩尔。然而,其立体异构体Tra-D-Phe-A
PPA对上述酶的抑制作用无法检测。