Abstract
A highly convergent synthesis of the Man 3GlcNAc 2 pentasaccharide structure 1 which is common to all asparagine-linked glycans is described. p-Methoxybenzyl assisted β-mannosidation was successfully applied to the coupling of trimannoside donor 3 and chitobiose derivative 4 to give the pentasaccharide 2 as a single isomer. Subsequent deprotection afforded the target compound 1.
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