Synthesis, Fungicidal Activity, and Mechanism of Action of Pyrazole Amide and Ester Derivatives Based on Natural Products <scp>l</scp>-Serine and Waltherione Alkaloids
作者:Xuewen Hua、Wenrui Liu、Yan Chen、Jing Ru、Shangjing Guo、Xiaobo Yu、Yanhong Cui、Xinghai Liu、Yucheng Gu、Chenmeng Xue、Yi Liu、Junkang Sui、Guiqing Wang
DOI:10.1021/acs.jafc.1c01346
日期:2021.9.29
effectively solve the problems of low safety and high pathogen resistance of traditional fungicides. In this paper, based on pyrazole amide compound h-I-9 with excellent fungicidal activity discovered in the previous work, a series of l-serine-derived pyrazole amide and waltherione alkaloid-derived pyrazole ester derivatives were synthesized. The structures were successively identified by 1H NMR, 13C
基于天然产物结构优化开发新型绿色杀菌剂,可有效解决传统杀菌剂安全性低、病原性高的问题。本文以前期工作中发现的具有优异杀菌活性的吡唑酰胺化合物hI-9为基础,合成了一系列l-丝氨酸衍生的吡唑酰胺和瓦尔特里酮生物碱衍生的吡唑酯衍生物。其结构依次通过1 H NMR、13 C NMR、高分辨质谱和 X 射线单晶衍射进行鉴定。体外和体内杀菌活性筛选表明,化合物II-5对真菌具有良好的抑制率。圆孢菌。透射电镜和荧光显微镜观察进一步表明化合物II-5可能对细胞膜和液泡造成损伤,II-5处理的菌丝可产生明显且易于观察的蓝色荧光。琥珀酸脱氢酶 (SDH) 酶活性和分子对接模拟表明化合物I-3和I-4可能是针对链格孢属的潜在 SDH 抑制剂。