Synthesis of oligosaccharides containing the X-antigenic trisaccharide (α-L-Fucp-(1-->3)-4)-β-D-GlcpNAc) at their nonreducing ends

Article abstract of DOI:10.1016/0008-6215(92)84057-Y

The "armed" methyl 2,3,4-tri-O-benzyl-1-thio-β-L-fucopyranoside was reacted with "disarmed" phenyl O-(tetra-O-acetyl-β-D-galactopyranosyl)-(1-->4)-6-O-benzyl-2-deoxy-2-phthalimido-1-thio-β-D-glucopyranoside in the presence of CuBr2-Bu4NBr complex to give