Synthesis of ureido thioglycosides as novel insect β‑N‑acetylhexosaminidase OfHex1 inhibitors
作者:Shengqiang Shen、Lili Dong、Huizhe Lu、Yanhong Dong、Qing Yang、Jianjun Zhang
DOI:10.1016/j.bmc.2020.115602
日期:2020.8
The insect β-N-acetylhexosaminidase OfHex1 from Ostrinia furnacalis (one of the most destructive agricultural pests) has been considered as a promising pesticide target. In this study, a series of novel and readily available ureido thioglycosides were designed and synthesized based on the catalytic mechanism and the co-crystal structures of OfHex1 with substrates. After evaluation via enzyme inhibition
β-昆虫ñ从-acetylhexosaminidase OfHex1亚洲玉米螟(最具破坏性的农业害虫之一)已被认为是有希望的农药目标。在这项研究中,基于OfHex1与底物的催化机理和共晶体结构,设计并合成了一系列新颖且易于获得的脲基硫糖苷。通过酶抑制实验评估后,发现硫糖苷11c和15k具有对OfHex1的抑制活性,其K i值分别为25.6 µM和53.8 µM。此外,所有这些脲基硫代糖苷对hOGA和HsHexB(K i> 100μM)。此外,为了研究其抑制机理,基于分子对接分析推导了11c和15k与OfHex1的可能结合方式。这项工作可能为进一步合理设计OfHex1抑制剂提供有用的结构起点。