Vital residues-orientated rational design of butenolide inhibitors targeting Of ChtI

文献类型： 外文期刊

第一作者： Han, Qing

作者： Han, Qing;Zi, Yun-Jiang;Feng, Tian-Yu;Zou, Ren-Xuan;Zhang, Jing-Yu;Zhang, Ru-Lei;Duan, Hong-Xia;Han, Qing;Zi, Yun-Jiang;Feng, Tian-Yu;Zou, Ren-Xuan;Zhang, Jing-Yu;Zhang, Ru-Lei;Duan, Hong-Xia;Wu, Nan;Yang, Qing;Wu, Nan;Yang, Qing

作者机构：

关键词： Residues-orientated strategy; Butenolide analogues; Of ChtI; Chitinolytic enzyme.

期刊名称：MEDICINAL CHEMISTRY RESEARCH （ 影响因子：2.6； 五年影响因子：2.3 ）

ISSN： 1054-2523

年卷期： 2024 年 33 卷 5 期

页码：

收录情况： SCI

摘要： An effective approach for discovering small molecular inhibitors is the residues-oriented strategy based on enzyme analysis. In this study, we employed a rational approach to design and synthesize a library of butenolide analogues (Ia-f and IIa-f) targeting Trp107, utilizing reported piperonyl butenolide as lead compound. Notably, the most compounds IIa-f (R-2 = NO2) exhibited slightly higher inhibitory potency against Of ChtI compared to compounds Ia-f (R2 = Br). Molecular mechanism studies unveiled a crucial hydrogen bond interaction between the NO2 group and Trp107, explaining the enhanced binding affinities. Compounds IIe and IIf, both bearing NO2 on the benzene ring at the R2 position, displayed the highest inhibitory activity, with Ki values of 0.87 and 0.68 mu M, respectively. Our findings highlight the potential of designing inhibitors with high enzymatic activity by structurally optimizing compounds based on the distinct interaction modes with crucial residues in the binding cavity of Of ChtI.

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