Synthesis and Antifungal Activity of Derivatives of the Natural Product Griseofulvin against Phytopathogenic Fungi
作者:Yu-Bin Bai、Meng Zhang、Ding Li、Yu Zhao、Liang-Zhu Huang、Jin-Ming Gao
DOI:10.1021/acs.jafc.2c09037
日期:2023.4.26
Furthermore, 12 showed remarkable activity against Cytospora sp. (IC50 = 5.85 ± 0.72 μg/mL). Additionally, in vivo antifungal activity against C. gloeosporioides, homology modeling, and docking analysis of 11, 12, and griseofulvin were conducted. All results indicated that 11 and 12 had potency as antifungal agents against C. gloeosporioides, and the modifications of the 2′ and 4′ positions of griseofulvin
天然产物是发现新农药的重要来源。化学合成和结构修饰可产生杀虫剂。尽管在发现用于作物保护的杀菌剂方面进行了大量研究,但对开发新型抗真菌农用化学品的需求不断增加。本文以天然产物灰黄霉素为原料,通过去甲基化、氨解、甲基化、硝化、酰化、还原、氯化等反应,通过多样性导向合成,有效合成了39种多样化的灰黄霉素衍生物。其中,31个衍生物具有新颖性。所有结构均通过1 H NMR、13 C NMR 和高分辨率质谱 (HR-MS) 进行表征,并研究了其对五种植物病原真菌的抗真菌活性。化合物5h和5l分别对Botrytis cinerea(5h,IC 50 = 17.29 ± 0.64 μg/mL)和Alternaria solani(5l,IC 50 = 22.52 ± 0.79 μg/mL)具有出色的活性。化合物9对三种目标真菌表现出更有希望的活性,尤其是对胶孢炭疽菌(IC 50 = 7.24 ± 0.66