Abstract

AbstractA total synthesis of nonasaccharide repeating units and shorter sequences from Phellinus ribis glycans with strong immunostimulating activities was achieved by an orthogonal one-pot glycosylation strategy based on an N-phenyltrifluoroacetimidate glycosylation, a Yu glycosylation, and an ortho-(1-phenylvinyl)benzoate glycosylation. The issues inherent to thioglycosides-based orthogonal one-pot glycosylations, such as aglycone transfer, are eliminated by this one-pot glycosylation strategy, which streamlines the chemical synthesis of glycans.

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