Stereoselective glycosylations using oxathiane spiroketal glycosyl donors
作者:Martin A. Fascione、Nicola J. Webb、Colin A. Kilner、Stuart L. Warriner、W. Bruce Turnbull
DOI:10.1016/j.carres.2011.07.020
日期:2012.2
(TMP)- and 2,4-dimethoxyphenyl (DMP)-oxathiane spiroketal sulfoniumions is discussed, and their α-stereoselectivity in glycosylation reactions is compared to the analogous TMP- and DMP-sulfonium ions derived from an oxathiane glycosyl donor bearing a methyl ketal group. The results show that the stereoselectivity of the oxathiane glycosyl donors is dependent on the structure of the ketal group and