Heterocycle-Substituted α-Methylene-γ-Butyrolactones Derivatives Synthesis, Antifungal Activity, and 3D-QSAR
作者:Luwei Li、Deyou Yang、Heng Li、Guangyou Chen、Peng Lei、Yanqing Gao、Juntao Feng
DOI:10.1021/acs.jafc.3c02117
日期:2023.7.26
from active botanical skeletons is one of the effective methods to tackle the resistance of plant pathogens. Based on our previous discoveries, a series of novel α-methylene-γ-butyrolactone (MBL) derivatives containing heterocycles and phenyl rings were designed according to the antifungal molecule carabrone first discovered in plant Carpesium macrocephalum. The target compounds were synthesized, and
利用活性植物骨架开发杀菌剂是应对植物病原菌抗性的有效方法之一。基于我们前期的发现,根据首次在植物Carpesium macrocephalum中发现的抗真菌分子carabrone,设计了一系列含有杂环和苯环的新型α-亚甲基-γ-丁内酯(MBL)衍生物。合成了目标化合物,并系统研究了其对病原真菌的抑制活性及其作用机制。几种化合物对多种真菌表现出有希望的抑制活性。最有效的化合物38对苹果腐霉( V. mali )的EC 50值为0.50 mg/L ,比商业杀菌剂恶唑菌酮更有效。化合物38对苹果枝条的苹果小叶弧菌的保护作用优于恶唑菌酮,50 mg/L时抑制率为47.9%。生理生化结果表明,化合物38通过引起细胞变形和收缩、减少细胞内线粒体数量、增厚细胞壁以及增加细胞膜的通透性来抑制V. mali 。基于三维定量构效关系(3D-QSAR)分析表明,大体积且带负电的基团的引入有利于新型MBL衍生物的