Design, Synthesis, Antibacterial Evaluation, Three-Dimensional Quantitative Structure–Activity Relationship, and Mechanism of Novel Quinazolinone Derivatives
作者:Lihui Shao、Su Zhao、Song Yang、Xiang Zhou、Yan Li、Chengpeng Li、Danping Chen、Zhuirui Li、Guiping Ouyang、Zhenchao Wang
DOI:10.1021/acs.jafc.2c07264
日期:2023.3.8
Plant bacterial illnesses are common and cause dramatic damage to agricultural goods all over the world, yet there are few efficient bactericides to alleviate them at present. To discover novel antibacterial agents, two series of quinazolinone derivatives with novel structures were synthesized and their bioactivity against plant bacteria was tested. Combining CoMFA model search and the antibacterial
植物细菌性病害很常见,对全世界的农产品造成巨大损害,但目前几乎没有有效的杀菌剂来缓解这些病害。为发现新型抗菌剂,合成了两个系列的具有新型结构的喹唑啉酮衍生物,并测试了它们对植物细菌的生物活性。结合 CoMFA 模型搜索和抗菌生物活性测定,D32被确定为一种有效的抗米黄单胞菌pv抗菌抑制剂。Oryzae ( Xoo ) 的 EC 50值为 1.5 μg/mL,与双噻唑 (BT) 和硫代二唑铜 (TC)(31.9 和 74.2 μg/mL)相比,抑制能力要好得多。化合物D32的活性体内对水稻细菌性叶枯病的抑制作用分别为46.7%(保护活性)和43.9%(治疗活性),优于市售药物噻二唑铜(29.3%的保护活性和30.6%的治疗活性)。流式细胞术、蛋白质组学、活性氧和关键防御酶被用于进一步研究D32的相关作用机制。D32作为抗菌抑制剂的鉴定及其识别机制的揭示不仅为开发治疗Xoo的新治疗策略提供了可