Synthesis, Bioactivity Evaluation,
<scp>3D‐QSAR</scp>
, and Molecular Docking of Novel Pyrazole‐4‐carbohydrazides as Potential Fungicides Targeting Succinate Dehydrogenase
作者:Jian Jiao、Min Chen、Shengxin Sun、Weijie Si、Xiaobin Wang、Weijie Ding、Xincan Fu、An Wang、Chunlong Yang
DOI:10.1002/cjoc.202000438
日期:2021.2
To screen novel antifungal agents targeting the succinate dehydrogenase (SDH), a series of pyrazole‐4‐carbohydrazides were rationally designed, synthesized, and characterized under the guidance of the structures of succinate dehydrogenase inhibitors (SDHIs). Bioassay results in vitro indicated that most of the target compounds exhibited excellent activity against Rhizoctonia solani (R. solani), Fusarium
为了筛选针对琥珀酸脱氢酶(SDH)的新型抗真菌剂,在琥珀酸脱氢酶抑制剂(SDHIs)的结构指导下,合理设计,合成和表征了一系列吡唑-4-碳酰肼。体外生物测定结果表明,大多数目标化合物对茄红枯萎病菌(R. solani),禾谷镰刀菌(F. graminearum),灰葡萄孢(B. cinerea)和辣椒炭疽菌(C. cinerea)均表现出优异的活性。化合物7d,7l,7t和7x被认为是最有效的候选化合物,并且它们的抗禾谷镰刀菌EC 50值分别低至0.56、0.47、0.46和0.49μg/ mL,具有与常用杀菌剂多菌灵(0.43μg/ mL)相似的抗真菌活性。3D-QSAR模型的建立是为了建立系统的结构-活性关系图,以探索更有效的吡唑-4-碳酰肼作为新型杀菌剂。进行了7d,7l和7r与SDH的分子对接,以揭示活性口袋中的结合模式,并分析了分子与SDH蛋白之间的相互作用。