Direct <i>N</i>
-Glycofunctionalization of Amides with Glycosyl Trichloroacetimidate by Thiourea/Halogen Bond Donor Co-Catalysis
作者:Yusuke Kobayashi、Yuya Nakatsuji、Shanji Li、Seiji Tsuzuki、Yoshiji Takemoto
DOI:10.1002/anie.201712726
日期:2018.3.26
Using a halogen bond (XB) donor and Schreiner's thiourea as cooperative catalysts, various amides, including the asparagine residues of several peptides, were directly coupled with glycosyl trichloroacetimidates to give unique N‐acylorthoamides in good yields. Synthetic applications of N‐acylorthoamides, including rearrangement to the corresponding β‐N‐glycoside, were also demonstrated.
使用卤素键(XB)供体和Schreiner的硫脲作为协同催化剂,将各种酰胺(包括几种肽的天冬酰胺残基)直接与糖基三氯乙酰亚氨酸酯偶联,以高收率得到独特的N-酰基邻酰胺。还展示了N-酰基邻酰胺的合成应用,包括重排至相应的β-N-糖苷。