methyl O-(4,6-O-benzylidene-2-O-benzoyl-3-O-chloroacetyl-β-D-galactopyranosyl)-(1->3)-O-[(2,3,4-tri-O-benzyl-β-D-arabinopyranosyl)-(1->4)]-O-(6-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->3)-O-(4,6-O-benzylidene-2-O-benzoyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-benzoyl-β-D-glucopyranoside 在
吡啶 、
甲醇 、
硫脲 作用下,
以
二氯甲烷 为溶剂,
以84%的产率得到methyl O-(4,6-O-benzylidene-2-O-benzoyl-β-D-galactopyranosyl)-(1->3)-O-[(2,3,4-tri-O-benzyl-β-D-arabinopyranosyl)-(1->4)]-O-(6-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->3)-O-(4,6-O-benzylidene-2-O-benzoyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-benzoyl-β-D-glucopyranoside