Discovery of non-competitive thrombin inhibitor derived from competitive tryptase inhibitor skeleton: Shift in molecular recognition resulted from skeletal conversion of carboxylate into phosphonate
作者:Hiroshi Aoyama、Ryosuke Ijuin、Jun-ya Kato、Sarasa Urushiyama、Masashi Tetsuhashi、Yuichi Hashimoto、Tsutomu Yokomatsu
DOI:10.1016/j.bmcl.2015.06.039
日期:2015.9
and internal phosphonate esters based on our previously developed aryl carboxylate-type tryptase selective inhibitor 1 was synthesized. The potency of these synthesized compounds was assessed in vitro with an enzyme inhibition assay using three available serine proteases, that is, tryptase, trypsin, and thrombin. The internal phosphonate derivative 6 showed potent thrombin inhibitory activity with
基于我们先前开发的芳基羧酸酯型类胰蛋白酶选择性抑制剂1,合成了一系列新的末端和内部膦酸酯。使用三种可用的丝氨酸蛋白酶,即胰蛋白酶,胰蛋白酶和凝血酶,通过酶抑制试验在体外评估了这些合成化合物的效力。内部膦酸酯衍生物6表现出强力的凝血酶抑制活性,IC 50值为1.0μM,而在10μM时没有或仅有弱的胰蛋白酶和胰蛋白酶抑制作用。Lineweaver-Burk图分析表明,尽管存在羧酸铅化合物1,但凝血酶对6的抑制作用是非竞争性的。是竞争性抑制剂。因此,羧酸盐向膦酸酯的骨架转化改变了凝血酶对这些抑制剂的分子识别方式。