Highly Direct α-Selective Glycosylations of 3,4-<i>O</i>-Carbonate-Protected 2-Deoxy- and 2,6-Dideoxythioglycosides by Preactivation Protocol
作者:Yin-Suo Lu、Qin Li、Li-He Zhang、Xin-Shan Ye
DOI:10.1021/ol801190c
日期:2008.8.21
A new efficient pre-activation method for the highly alpha-stereoselective glycosylation of 2-deoxysugars and 2,6-dideoxysugars has been developed using 2-deoxy- and 2,6-dideoxythioglycosides as glycosyl donors. The approach allows a wide range of glycosyl acceptors and donors to be used; the alpha-selectivity is very good to excellent.