、
乙酸酐 在
吡啶 作用下,
以234 mg的产率得到2,6-dimethylphenyl 4,6-di-O-acetyl-2,3-di-O-benzyl-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