Synthesis and Quantitative Structure-Activity Relationship (QSAR) Study of Novel 4-Acyloxypodophyllotoxin Derivatives Modified in the A and C Rings as Insecticidal Agents

文献类型： 外文期刊

第一作者： He, Shuzhen

作者： He, Shuzhen;Fan, Lingling;Che, Zhiping;Xu, Hui;Zhi, Xiaoyan;Wang, Juanjuan;Qu, Huan;Shao, Yonghua;Yao, Xiaojun;He, Shuzhen

作者机构：

关键词： podophyllotoxin;acyloxy;A and C ring modification;botanical insecticide;insecticidal activity;QSAR;Mythimna separata Walker

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： In continuation of our program aimed at the discovery and development of natural-product-based insecticidal agents, we have synthesized three series of novel 4-acyloxy compounds derived from podophyllotoxin modified in the A and C rings, which is isolated as the main secondary metabolite from the roots and rhizomes of Podophyllum hexandrum. Their insecticidal activity was preliminarily evaluated against the pre-third-instar larvae of Mythimna separata in vivo. Compound 9g displayed the best promising insecticidal activity. It revealed that cleavage of the 6,7-methylenedioxy group of podophyllotoxin will lead to a less active compound and that the C-4 position of podophyllotoxin was the important modification location. A quantitative structure—activity relationship (QSAR) model was developed by genetic algorithm combined with multiple linear regression (GA-MLR). For this model, the squared correlation coefficient (R~2) is 0.914, the leave-one-out cross-validation correlation coefficient (Q_(Loo)~2) is 0.881, and the root-mean-square error (RMSE) is 0.024. Five descriptors, BEHm2, Morl4v, Wap, Glv, and RDF020e, are likely to influence the biological activity of these compounds. Among them, two important ones are BEHm2 and Morl4v. This study will pave the way for further design, structural modification, and development of podophyllotoxin derivatives as insecticidal agents.

分类号： R15

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