Novel dual inhibitors against FP-2 and PfDHFR as potential antimalarial agents: Design, synthesis and biological evaluation
作者:Wenhua Chen、Xue Yao、Zhenghui Huang、Fei Mao、Longfei Guan、Yun Tang、Hualiang Jiang、Jian Li、Jin Huang、Lubin Jiang、Jin Zhu
DOI:10.1016/j.cclet.2017.11.041
日期:2019.1
Abstract Resistance to malaria parasites has quickly developed to almost all used antimalarial drugs. Cysteine protease falcipain-2 (FP-2) and Plasmodium falciparum dihydrofolate reductase (PfDHFR) have crucial roles, which are absolutely necessary, in the parasite life cycle. In this study, based on the uniform pharmacophores of reported PfDHFR inhibitors and the first-generation dual inhibitors against
摘要对疟原虫的抗药性已迅速发展到几乎所有使用过的抗疟药。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具有至关重要的作用,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的双重抑制剂的统一药效基团,我们通过片段组装鉴定了一系列新型的双重抑制剂。铅优化导致鉴定出14,它显示出对FP-2和PfDHFR酶(IC50 = 6.8±1.8μmol/ L和IC50 = 8.8±0.3μmol/ L)和恶性疟原虫3D7菌株(IC50 = 2.9μmol)的有效抑制作用/ L)。此外,14个对氯喹抗性恶性疟原虫Dd2菌株的增殖表现出更强的抑制作用(IC50 = 1。比乙胺嘧啶(IC50> 10μmol/ L)高1μmol/ L)和14种对两种临床分离株Fab9(IC50 = 2.6μmol/ L)和GB4(IC50