benzyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1-4)-O-<(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1-3)>-O-(6-O-benzyl-2-deoxy-2-phtalimido-β-D-glucopyranosyl)-(1-3)-O-(4-O-acetyl-2,6-di-O-benzyl-β-D-galactopyranosyl)-(1-4)-2,3,6-tri-O-benzyl.. 在
sodium methylate 、
乙酸酐 、
一水合肼 作用下,
以71%的产率得到benzyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1-4)-O-<(2,3,6-tri-O-benzyl-α-L-fucopyranosyl)-(1-3)>-O-(2-acetamido-6-O-benzyl-2-deoxy-β-D-glucopyranosyl)-(1-3)-O-(4-O-acetyl-2,6-di-O-benzyl-β-D-galactopyranosyl)-(1-4)-2,3,6-tri-O-benzyl...