Design, Synthesis, Antifungal Activity, and 3D-QASR of Novel Oxime Ether-Containing Coumarin Derivatives as Potential Fungicides
作者:Peng Dai、Qingqing Wang、Peng Teng、Jian Jiao、Yufei Li、Qing Xia、Weihua Zhang
DOI:10.1021/acs.jafc.3c06032
日期:2024.3.20
development of new agrochemical products. In this work, a series of novel coumarin derivatives containing oxime ether structures were designed, synthesized, and evaluated for antifungal activity. Some of the designed compounds exhibited promising antifungal activities against tested fungi, and compounds 4a, 4c, 5a, and 6b had EC50 values equivalent to those of commercial fungicides. Compound 6b was
天然产物的结构修饰是提高抗真菌活性的有效途径,因此被广泛用于新农化产品的开发。在这项工作中,设计、合成了一系列含有肟醚结构的新型香豆素衍生物,并评估了其抗真菌活性。一些设计的化合物对测试的真菌表现出良好的抗真菌活性,化合物4a 、 4c 、 5a和6b的 EC 50值与商业杀菌剂相当。化合物6b是最有前途的抗立枯丝核菌候选杀菌剂(EC 50 = 0.46 μg/mL)。体内抗真菌生物测定表明化合物5a和6b可作为新型农业抗真菌剂。此外,显微镜检查表明,化合物6b会诱导菌丝蔓延生长,扭曲细胞壁的轮廓,并减少线粒体数量。此外,使用准确可靠的三维定量构效关系(3D-QSAR)模型阐明了取代基空间、静电、疏水和氢键场的影响。这里提出的结果将指导发现用于农业植物病害控制的潜在新型杀菌剂。