Synthesis of the C-linked disaccharide alpha-D-Man-(1-->4)-D-Man employing a SmI(2)-mediated C-glycosylation step: en route to cyclic C-oligosaccharides.


Investigations are reported on the assembly of the C-linked disaccharide alpha-D-Man-(1-->4)-D-Man, representing the first steps in our projected synthesis of a cyclic C-oligomer containing repeating units of this C-dimer. The key step in this synthesis uses a SmI(2)-mediated coupling of 2,3,4,6-tetra-O-benzyl-alpha-D-mannopyranosyl 2'-pyridyl sulfone with… (More)


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