Chemoselective Elaboration of <i>O</i>-Linked Glycopeptide Mimetics by Alkylation of 3-ThioGalNAc
作者:Lisa A. Marcaurelle、Carolyn R. Bertozzi
DOI:10.1021/ja003713q
日期:2001.2.1
A critical branch point in mucin-type oligosaccharides is the beta 1-->3 glycosidic linkage to the core alpha-N-acetylgalactosamine (GalNAc) residue. We report here a strategy for the synthesis of O-linked glycopeptide analogues that replaces this linkage with a thioether amenable to construction by chemoselective ligation. The key buildingblock was a 2-azido-3-thiogalactose-Thr analogue that was