Expedient Discovery for Novel Antifungal Leads Targeting Succinate Dehydrogenase: Pyrazole-4-formylhydrazide Derivatives Bearing a Diphenyl Ether Fragment
作者:Xiaobin Wang、An Wang、Lingling Qiu、Min Chen、Aimin Lu、Guohua Li、Chunlong Yang、Wei Xue
DOI:10.1021/acs.jafc.0c03736
日期:2020.12.9
pyrazole-4-carboxamide scaffold containing a flexible amide chain has emerged as the molecular skeleton of highly efficient agricultural fungicides targeting succinate dehydrogenase (SDH). Based on the above vital structural features of succinate dehydrogenase inhibitors (SDHI), three types of novel pyrazole-4-formylhydrazine derivatives bearing a diphenyl ether moiety were rationally conceived under the
含有柔性酰胺链的吡唑-4-羧酰胺支架已经成为靶向琥珀酸脱氢酶(SDH)的高效农业杀菌剂的分子骨架。基于上述琥珀酸脱氢酶抑制剂(SDHI)的重要结构特征,在生物活性分子与SDH之间的虚拟对接比较的指导下,合理构思了三种新型的带有联苯醚部分的吡唑-4-甲酰肼衍生物。与分子对接比较的虚拟验证结果一致,体外抗真菌生物测定表明,标题化合物的骨架结构应优化为N '-(4-苯氧基苯基)-1 H-吡唑-4-碳酰肼支架。惊人地N '-(4-苯氧基苯基)-1 H-吡唑-4-碳酰肼衍生物对solani solani的影响11o,对禾谷镰刀菌(Fusarium graminearum)的11m和对灰葡萄孢的11g表现出优异的抗真菌作用,相应的EC 50值为0.14、0.27和0.52 μg/ mL,明显优于多菌灵(针对多菌灵(0.34μg / mL)和禾本科镰刀菌(0.57μg/ mL))和戊硫吡拉(对灰霉病)(0