Discovery of Phytoalexin Camalexin and Its Derivatives as Novel Antiviral and Antiphytopathogenic-Fungus Agents
作者:Ancai Liao、Lin Li、Tienan Wang、Aidang Lu、Ziwen Wang、Qingmin Wang
DOI:10.1021/acs.jafc.1c07805
日期:2022.3.2
varieties of botanical pesticides based on allelochemicals is one of the important ways to create efficient and green pesticides. Here, a series of camalexin derivatives based on a phytoalexin camalexin scaffold were designed, synthesized, and assessed for their antiviral and fungicidal activities systematically. Most of these camalexin derivatives exhibited better antiviral activities against tobacco mosaic
为了应对植物病毒和病原真菌的入侵,高等植物会产生防御性化感物质。基于化感化学物质寻找植物源农药候选品种是打造高效绿色农药的重要途径之一。在这里,设计、合成了一系列基于植物抗毒素camalexin 支架的camalexin 衍生物,并系统地评估了它们的抗病毒和杀真菌活性。这些camalexin衍生物中的大多数对烟草花叶病毒(TMV)表现出比对照抗病毒剂利巴韦林更好的抗病毒活性。在相同的试验条件下,化合物3d、5a、5d和10f - 10h的抗TMV活性发现与宁南霉素相当或优于宁南霉素,这是一种具有优异保护作用的农用胞嘧啶核苷抗生素。抗病毒机制研究表明,化合物5a可引起20S CP盘融合解体,从而影响病毒颗粒的组装。分子对接结果表明化合物3d、5a、10f与TMV CP之间存在明显的氢键。化合物5a和10f与 TMV CP的结合常数也使用荧光滴定法计算。这些 camalexin 衍生物还具有广