benzyl O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->6)-O-<(3,4,6-tri-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->4)>-O-(2-O-benzyl-β-D-mannopyranosyl)-(1->4)-O-(3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-....... 、 methyl 2-O-acetyl-3,4,6-tri-O-benzyl-1-thio-β-D-mannopyranoside 在
苯基氯化硒 、 4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 24.0h,
以38%的产率得到benzyl O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->6)-O-<(3,4,6-tri-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->4)>-O-<(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->3)>-O-(2-O-benzyl-β-D-mannopyranosyl)-(1->4)-O-....