the parasite life cycle. In this study, based on the structures of uniform fragments of reported PfDHFR inhibitors and the first-generation dual inhibitors against FP-2 and PfDHFR, we identified a novel series of dual inhibitors through fragments assembly. Lead optimization led to the discovery of 24, which showed high potency against FP-2 (IC50 = 10.0 µM), PfDHFR (IC50 = 84.1 nM), P. falciparum 3D7
疟原虫是世界范围内因传染病致死的主要原因。半胱
氨酸
蛋白酶falcipain-2(FP-2)和恶性疟原虫二氢叶酸还原酶(PfDHFR)在寄生虫的生命周期中起着至关重要的作用,这是绝对必要的。在这项研究中,基于已报道的PfDHFR
抑制剂和第一代针对FP-2和PfDHFR的双重
抑制剂的均一片段结构,我们通过片段组装鉴定了一系列新型的双重
抑制剂。
铅优化导致发现24种,对FP-2(IC 50 = 10.0 µM),PfDHFR(IC 50 = 84.1 nM),恶性疟原虫3D7(IC 50 = 53.1 nM),临床分离株Fab9表现出高效力(我知道了50 = 14.2 nM)和GB4(IC 50 = 23.4 nM)。在体内对抑制测定伯氏疟原虫在10天内显示24对生长的抑制更有利的影响伯氏疟原虫比
青蒿素和
乙胺嘧啶具有相同的效果。此外,24中度抑制耐
氯喹的恶性疟原虫Dd2菌株的增殖。总体而