Reversal of anomeric selectivity with O-glycosyl trichloroacetimidates as glycosyl donors and thiols as acceptors under acid/base catalysis
Boron trifluoride or trimethylsilyl trifluoromethanesulfonate catalysed the generation of thioglycosides from O-glucopyranosyl or O-galactopyranosyl trichloroacetimidates and thiols giving mainly or exclusively α-thioglycosides. However, the same reaction
Kumar, Amit,Schmidt, Richard R.
supporting information; experimental part
p. 2715 - 2719
(2012/06/30)
A simple access to 3,6-branched oligosaccharides: Synthesis of a glycopeptide derivative that relates to Lycium barbarum L.
An efficient method is described for the synthesis of galactopyranosyl-containing 3,6-branched oligosaccharides using isopropyl thiogalactopyranoside as starting material. This method is successfully applied to the preparation of a glycopeptide derivative that relates to Lycium barbarum L. The potential application of isopropyl thioglycoside in glycosylation is also investigated.
Du, Yuguo,Zhang, Meimei,Yang, Feng,Gu, Guofeng
p. 3122 - 3127
(2007/10/03)
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