Expedient Discovery for Novel Antifungal Leads Inhibiting <i>Fusarium graminearum</i>: 3-(Phenylamino)quinazolin-4(3<i>H</i>)-ones Deriving from Systematic Optimizations on a Tryptanthrin Structure
作者:Xiaobin Wang、Jianqi Chai、Yifei Gu、Di Zhang、Fei Meng、Xinxin Si、Chunlong Yang、Wei Xue
DOI:10.1021/acs.jafc.2c04933
日期:2022.10.19
Fusarium graminearum has emerged as a pressing agricultural issue that could be settled by developing novel fungicides owning inimitable action mechanisms. With the aim of discovering novel antifungal leads inhibiting F. graminearum, a tryptanthrin structure was dexterously optimized to generate 30 novel quinazolin-4(3H)-one derivatives. The aforementioned optimization generated the molecule C17 that owned
禾谷镰刀菌不断增加的抗性已成为一个紧迫的农业问题,可以通过开发具有独特作用机制的新型杀菌剂来解决。为了发现抑制禾谷镰刀菌的新型抗真菌药物,对色氨酸结构进行了巧妙优化,以生成 30 种新型 quinazolin-4(3 H )-one 衍生物。上述优化产生了具有令人振奋的体外抗禾谷镰刀菌作用的分子C 17 (EC 50值 = 0.76 μg/mL)。此后,体内抗禾谷镰刀菌在 200 μg/mL 时,分子C 17的预防效力测得为 59.5%,这与多菌灵 (64.9%) 的预防效力大致相当。此外,形态学观察表明,分子C 17可以使菌丝变得细长和致密,扭曲细胞壁的轮廓,诱导脂质体数量增加,并导致线粒体数量减少。上述结果已成为开发可有效控制镰刀菌头枯病的新型抗真菌药物的必要补充。