Novel 4,5-dihydro-1H-pyrazole derivatives as potential succinate dehydrogenase inhibitors: design, synthesis, crystal structure, biological activity and molecular modeling
作者:Tingting Zhang、Hui Liu、Tong Lu、Guilan Zhang、Tingting Xiao、Wei Cheng、Jingwen Wang、Wenjing Jiang、Xiaorong Tang
DOI:10.1016/j.molstruc.2021.131537
日期:2022.2
Twenty-eight new 4, 5-dihydro-1H-pyrazole derivatives were designed, synthesized and characterized by IR, 1H NMR, 13C NMR and HRMS. The crystal structure of compound 2j was characterized by single crystal X-ray diffraction. Their antifungal activities were evaluated against five plant pathogenic fungi: Coniella diplodiella, Penicillium digitatum, Physalospora piricola, Rhizoctonia cerealis and Sclerotinia
设计、合成了28 种新的 4, 5-二氢-1 H-吡唑衍生物,并通过 IR、1 H NMR、13 C NMR 和 HRMS 对其进行了表征。化合物2j的晶体结构通过单晶X射线衍射表征。对它们对五种植物病原真菌的抗真菌活性进行了评估:二倍体球孢菌、指状青霉、轮孢菌、谷丝核菌和核盘菌。结果显示,它们中的大多数在 20 µg/mL 时表现出显着的抗真菌活性。化合物3a (EC 50 = 0.138 µg/mL) 和3f (EC 50 = 0.081 µg/mL) 对核盘菌表现出优异的抗真菌活性,并且比商业杀菌剂戊硫菌灵 (EC 50 = 0.250 µg/mL)具有更好的功效。同时,测定了生物活性化合物对琥珀酸脱氢酶(SDH)的抑制活性。结果表明,化合物3a (IC 50 = 0.200 µg/mL) 和3f (IC 50 = 0.104 µg/mL) 具有比吡噻菌胺(IC 50 = 0