Diastereoselective Synthesis of <i>C</i>-Vinyl Glycosides via Gold(I)-Catalyzed Tandem 1,3-Acyloxy Migration/Ferrier Rearrangement
作者:Nianyu Huang、Hongze Liao、Hui Yao、Tianpeng Xie、Shasha Zhang、Kun Zou、Xue-Wei Liu
DOI:10.1021/acs.orglett.7b03062
日期:2018.1.5
A novel gold-catalyzed C-glycosylation has been developed to gain access to α,(Z)-selective C-vinyl glycosides, starting from readily available glycals and propargylic carboxylate. This reaction involves a tandem intermolecular gold-catalyzed 1,3-acyloxy migration/Ferrier rearrangement with the involvement of allenic ester as the glycosyl acceptor. A wide range of substrate scope with good to excellent
已经开发了新颖的金催化的C-糖基化以从容易获得的糖和炔丙基羧酸酯开始获得对α,(Z)-选择性C-乙烯基糖苷的访问。该反应涉及串列分子间金催化的1,3-酰氧基迁移/费勒重排,其中烯丙酸酯作为糖基受体。以完全非对映选择性实现了范围广泛的底物范围,具有良好至极好的收率。