Bn(-2)[Bn(-3)][Bn(-4)]Fuc(a1-3)[Bn(-6)]b-GlcNAc1Me 、
ethyl 3-O-[(1S)-1-(cyclohexylmethyl)-2-oxo-2-(phenylmethoxy)ethyl]-1-thio-β-D-galactopyranoside 2,4,6-tribenzoate 在
DMTST 作用下,
以
二氯甲烷 为溶剂,
反应 72.0h,
以28%的产率得到methyl 3-O-[(1S)-1-benzyloxycarbonyl-2-cyclohexylethyl]-2,4,6-tri-O-benzoyl-β-D-galactopyranosyl-(1->4)-[2,3,4-tri-O-benzyl-α-L-fucopyranosyl-(1->3)]-2-acetamido-6-O-benzyl-2-deoxy-β-D-glucopyranoside