Design, Synthesis, and Antifungal Activity of 2,6-Dimethyl-4-aminopyrimidine Hydrazones as PDHc-E1 Inhibitors with a Novel Binding Mode
作者:Yuan Zhou、Shasha Zhang、Meng Cai、Kaixing Wang、Jiangtao Feng、Dan Xie、Lingling Feng、Hao Peng、Hongwu He
DOI:10.1021/acs.jafc.0c07701
日期:2021.6.2
A series of novel 2,6-dimethyl-4-aminopyrimidine hydrazones 5 were rationally designed and synthesized as pyruvate dehydrogenase complex E1 (PDHc-E1) inhibitors. Compounds 5 strongly inhibited Escherichia coli (E. coli) PDHc-E1 (IC50 values 0.94–15.80 μM). As revealed by molecular docking, site-directed mutagenesis, enzymatic, and inhibition kinetic analyses, compounds 5 competitively inhibited PDHc-E1
一系列新型 2,6-二甲基-4-氨基嘧啶腙5被合理设计和合成为丙酮酸脱氢酶复合物 E1 (PDHc-E1) 抑制剂。化合物5强烈抑制大肠杆菌(E.coli)PDHc-E1(IC 50值为 0.94–15.80 μM)。分子对接、定点诱变、酶促和抑制动力学分析表明,化合物5竞争性抑制 PDHc-E1 并以“直线”模式结合在大肠杆菌PDHc-E1 活性位点,这是一种新的结合模式. 在体外抗真菌试验中,大多数化合物5在50μg/ mL的显示针对六个测试植物病原性真菌,包括菌丝生长超过80%的抑制灰霉病,念珠菌fructigena,炭疽病菌,和葡萄座腔dothidea侵染。值得注意的是,5f和5i对M. fructigena 的效力是商业杀菌剂克菌丹和百菌清的1.8-380 倍。在体内,与商业杀菌剂戊唑醇相比,5f和5i控制M. fructigena的生长。因此,5f和5i对防治果蝇桃褐腐病具有潜在的商业价值。