Abstract
A new glycosylation methodology for synthesizing a protected T f antigen is described. The key step is to use phenyl selenoglycoside as a glycosyl donor, thereby successfully establishing O-linked Fmoc-protected threoninyl monosaccharide in an excellent yield with high α selectivity. From protected d-galactal, a protected T f antigen building block is obtained in 40% total yield.
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