Liu Xuelian, Jia Changqing, Yin Fahong, Zhang Li, Du Shijie, Li Jia-Qi, Xiao Yumei, Qin Zhaohai
College of Science, China Agricultural University, Beijing, 100193, China.
College of Material and Chemical Engineering, Tongren University, Tongren, 554300, Guizhou Province, China.
Mol Divers. 2022 Apr;26(2):801-813. doi: 10.1007/s11030-021-10187-6. Epub 2021 Feb 6.
To discover novel strobilurin fungicides, a series of methyl (E)-1-(2-((E)-2-methoxy-1-(methoxy-imino)-2-oxoethyl)benzyl)-2-(1-arylidene)hydrazine-1-carboxylates were designed based on the principle of biologically active splicing and the receptor target structure. The fungicidal activity results show that this class of compounds has excellent fungicidal activity, especially against S. sclerotiorum (Lib.) deBary, wheat white powder and puccinia polysora. The result of structure-activity relationship implied that the introduction of t-butyl in the side chain facilitates the hydrophobic interaction between the compound and the active site. The electrostatic effect of the substituents on the benzene ring is also a key factor affecting such activities. Among them, the compound I-1 not only showed a fungicidal effect comparable to that of kresoxim-methyl in vivo, but also had an excellent inhibitory effect on spore germination of P. oryzae Cav in vitro, which indicated that it could be used as a potential commercial fungicide for plant disease control.
为发现新型甲氧基丙烯酸酯类杀菌剂，基于生物活性拼接原理和受体靶标结构，设计了一系列（E）-1-（2-（（E）-2-甲氧基-1-（甲氧基亚氨基）-2-氧代乙基）苄基）-2-（1-亚芳基）肼基甲酸甲酯。杀菌活性结果表明，这类化合物具有优异的杀菌活性，尤其对核盘菌、小麦白粉病和多堆柄锈菌有良好效果。构效关系结果表明，侧链中引入叔丁基有利于化合物与活性位点之间的疏水相互作用。苯环上取代基的静电效应也是影响此类活性的关键因素。其中，化合物I-1不仅在体内表现出与嘧菌酯相当的杀菌效果，而且在体外对稻瘟病菌的孢子萌发有优异的抑制作用，表明其可作为一种潜在的用于植物病害防治的商业杀菌剂。
