Highly stereoselective synthesis of α,β-linked, nonreducing disaccharides related to tunicamycin

Article abstract of DOI:10.1016/0008-6215(94)84021-0

3,4,6-tri-O-benzoyl-2-(benzoyloxyimino)-2-deoxy-α-D-arabino-hexopyranosyl bromide (2) reacts with the O-protected 2-deoxy-2-phthalimido-β-D-galactosamines 3 and 4 in the presence of silver triflate and sym-collidine at -78 deg C, to give α,β-(1 -> 1)-link