2,3-di-O-benzyl-4,6-di-tert-butylsilylene-α-D-galactopyranosyl fluoride 、
2,6-dimethylphenyl 2-O-benzoyl-3,6-di-O-benzyl-β-D-galactopyranosyl-(1->4)-3-O-benzoyl-6-O-benzyl-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-1-thio-β-D-glucopyranoside 在
Cp
2HfCl
2 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以91%的产率得到2,6-dimethylphenyl 2,3-di-O-benzyl-4,6-di-tert-butylsilylene-α-D-galactopyranosyl-(1->4)-2-O-benzoyl-3,6-di-O-benzyl-β-D-galactopyranosyl-(1->4)-3-O-benzoyl-6-O-benzyl-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-1-thio-β-D-glucopyranoside