Optimization of Osthole in the Lactone Ring as an Agrochemical Candidate: Synthesis, Characterization, and Pesticidal Activities of Osthole Amide/Ester Derivatives and Their Effects on Morphological Changes of Mite Epidermis
作者:Jianwei Xu、Min Lv、Tianze Li、Houpeng Wen、Hui Xu
DOI:10.1021/acs.jafc.3c00211
日期:2023.5.3
Structural modification of natural products is one of the important ways in the discovery of novel pesticides. Based on a diversity-oriented synthesis strategy, herein, two series of amide/ester derivatives (52 compounds) were obtained by opening the lactone of osthole. Interestingly, the effect of different concentrations of aq. sodium hydroxide on the ratio of two isomers (cis- and trans-2) was investigated
对天然产物进行结构修饰是发现新型农药的重要途径之一。基于多样性导向的合成策略,在此,通过打开蛇床子素的内酯获得了两个系列的酰胺/酯衍生物(52个化合物)。有趣的是,不同浓度的 aq 的影响。研究了氢氧化钠对两种异构体(顺式-和反式-2 )的比例,观察到紫外线(UV)照射对两种异构体(顺式-和反式-2 )相互转化的神奇现象。针对Mythimna separata ,与前体蛇床子素化合物4b相比,4l、5l、5m、7h、7l和7m表现出更明显的生长抑制活性,最终死亡率为 62.0–68.9%。化合物4b、4i和5m对朱砂叶螨的杀螨活性比蛇床子素强 5.7-6.6 倍,值得注意的是,化合物4i和5m在防治朱砂叶螨方面的防治效果是蛇床子素的 2.4 倍和 2.7 倍。温室。5m处理的朱砂表皮的扫描电子显微镜 (SEM) 图像表明复方5m可破坏螨表皮层。化合物4b和5m可作为先导化合物进一步探索更有前途的杀虫剂。