p-methoxyphenyl O-(2,3,4-tri-O-benzyl-α-D-fucopyranosyl)-(1->6)-3-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranoside 、 O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->3)-O-<(2-O-acetyl-4,6-O-benzylidene-β-D-mannopyranosyl)-(1->4)>-(3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl) fluoride 在
二氯二茂铪 、 4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
以39%的产率得到p-methoxyphenyl O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->3)-O-<(2-O-acetyl-4,6-O-benzylidene-β-D-mannopyranosyl)-(1->4)>-O-(3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->4)>-O-<(2,3,4-tri-O-benzyl-α-L-fucopyranosyl...