Synthesis of the methyl and 1-octyl glycosides of the P-antigen tetrasaccharide (globotetraose)

Add time:09/06/2019    Source:sciencedirect.com

The methyl and 1-octyl β-glycosides of the P-antigen tetrasaccharide [globotetraose, β-d-GalpNAc-(1→3)-α-d-Galp-(1→4)-β-d-Galp-(1→4)-d-Glc] were synthesised from a tetrasaccharide precursor, prepared using methyl disaccharide 1-thioglycosides as intermediates. In the key glycosidation with silver triflate, HO-2 was used as an α-directing group in the glycosyl bromide.

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