A Piperine-Based Scaffold as a Novel Starting Point to Develop Inhibitors against the Potent Molecular Target <i>Of</i>ChtI
作者:Qing Han、Nan Wu、Hui-Lin Li、Jing-Yu Zhang、Xiang Li、Ming-Fei Deng、Kai Zhu、Jin-E Wang、Hong-Xia Duan、Qing Yang
DOI:10.1021/acs.jafc.0c08119
日期:2021.7.14
which demonstrated that the introduced butenolide skeleton improved the binding affinity to OfChtI. Moreover, the in vivo activity assay indicated that these compounds also displayed moderate insecticidal activity toward O. furnacalis. This work introduces the natural product piperine as a starting point for the development of novel insecticides targeting OfChtI.
昆虫几丁质酶中来自农业害虫ChtI玉米螟(亚洲玉米螟)是绿色杀虫剂设计一个有前途的目标。的ChtI是在蜕皮的阶段中的几丁质表皮劣化的临界几丁质酶。在这项研究中,胡椒碱,来自黑胡椒分离的天然的酰胺化合物,胡椒L.,发现首次具有抑制活性的朝向中ChtI。推测化合物-酶相互作用发生在胡椒碱苯并[ d ][1,3]二氧杂环戊烷骨架和Of底物结合口袋的亚位点-1之间。ChtI。因此,在推断的ChtI底物结合腔的抑制机制和晶体结构的基础上,通过将丁烯内酯支架引入先导化合物胡椒碱设计并合成了化合物5a - f。酶活性测定表明,化合物5A - ˚F(ķ我= 1.03-2.04μM)表现出大约40-80倍比引线化合物胡椒碱更高的抑制活性(我)(ķ我= 81.45μM)朝向中ChtI。胡椒基丁烯酸内酯化合物的抑制机理是通过分子动力学,这表明导入的丁烯酸内酯骨架提高到的结合亲和力阐明中ChtI。此外,体内活性测定表明这些化合物还显示出对O