Oligosaccharide Synthesis via Electrophile-Induced Activation of Glycosyl-N-Allylcarbamates
作者:Holger Herzner、Jörg Eberling、Michael Schultz、Jörg Zimmer、Horst Kunz
DOI:10.1080/07328309808002350
日期:1998.5.1
Glycosyl-N-allyl carbamates, obtained by reaction of anomerically unprotected saccharides with allyl isocyanate, can be activated by an electrophile-induced cyclisation and reacted with glycosyl accepters to form the corresponding oligosaccharides. By this method the mucin core 2 trisaccharide(2) has successfully been synthesized. Due to the mild glycosylation conditions even 1-O-acetyl protected glycosyl accepters can be used. This was demonstrated in the synthesis of a 1,6-linked glucosyl trisaccharide whereby a reptitious glycosylation strategy could be applied.