Site-Selective Acylations of α- and β-Hydroxyamides in Complex Molecules: Application of Template-Driven Acylation to Disaccharides and a Glycopeptide
作者:Yasuhiro Nishikawa、Shione Toda、Takami Matsui、Hanae Takada、Kohei Takemoto、Osamu Hara
DOI:10.1021/acs.orglett.1c00612
日期:2021.4.2
Site-selective acylations of α-and β-hydroxyamides in complex polyols are described. The combination of a pyridine aldoxime ester and Zn(OTf)2 facilitates the acylation of two types of N-glycolyl disaccharides, namely, Gal-GlcNGc and Neu5Gc-Gal, both of which are partial structures of polysaccharides responsible for biological actions, with highly site-selective modifications achieved. Furthermore
描述了复杂多元醇中 α-和 β-羟基酰胺的位点选择性酰化。吡啶醛肟酯和 Zn(OTf) 2 的结合促进了两种类型的N-羟乙基二糖的酰化,即 Gal-GlcNGc 和 Neu5Gc-Gal,这两种类型都是负责生物作用的多糖的部分结构,具有高度实现了位点选择性修饰。此外,生物素化是化学生物学中最重要的技术之一,用于位点选择性酰化糖肽中的 β-羟基。