Design, Synthesis, and Structure–Activity Relationship of Quinazolinone Derivatives as Potential Fungicides
作者:Jing-Wen Peng、Xiao-Dan Yin、Hu Li、Kun-Yuan Ma、Zhi-Jun Zhang、Rui Zhou、Yu-Ling Wang、Guan-Fang Hu、Ying-Qian Liu
DOI:10.1021/acs.jafc.0c05475
日期:2021.4.28
Plant diseases caused by phytopathogenic fungi reduce the yield and quality of crops. To develop novel antifungal agents, we designed and synthesized eight series of quinazolinone derivatives and evaluated their anti-phytopathogenic fungal activity. The bioassay results revealed that compounds KZL-15, KZL-22, 5b, 6b, 6c, 8e, and 8f exhibited remarkable antifungal activity in vitro. Especially, compound
由植物致病真菌引起的植物病害降低了作物的产量和质量。为了开发新型的抗真菌剂,我们设计并合成了8个系列的喹唑啉酮衍生物,并评估了它们的抗植物病原性真菌活性。生物测定结果表明,化合物KZL-15,KZL-22,图5b,图6b,图6c,图8E和图8F显示出显着的抗真菌活性在体外。尤其是,化合物6c对巩膜核盘菌,Satellakis sasakii,镰刀镰刀菌(Fusarium graminearum)和尖孢镰刀菌(Fusarium oxysporum)的IC 50值(抑制浓度50%)分别为2.46、2.94、6.03和11.9μg/ mL。进一步的机制询问显示,用化合物6c处理的菌核菌中菌丝异常,细胞器受损和细胞膜通透性改变。另外,体内生物测定法表明,化合物6c在100μg/ mL浓度下对核盘菌的治疗和保护作用(分别为87.3和90.7%)可与阳性对照嘧菌酯(分别为89.5和91.2%)相媲美。这项工作验证了化合物6c的潜力