methyl 2-O-acetyl-3-O-benzyl-4-O-tert-butyldimethylsilyl-α-L-idopyranosyluronate-(1→4)-2-acetylamido-3-O-benzyl-1-O-(2-(2-((2S)-bicyclo[2.2.1]hept-5-en-2-ylmethoxy)ethoxy)ethyl)-2-deoxy-β-D-glucopyranoside 在
吡啶 、
三氧化硫吡啶 作用下,
反应 48.0h,
以78%的产率得到methyl 2-O-acetyl-3-O-benzyl-4-O-tert-butyldimethylsilyl-α-L-idopyranosyluronate-(1→4)-3-O-benzyl-1-O-(2-(2-((2S)-bicyclo[2.2.1]hept-5-en-2-ylmethoxy)ethoxy)ethyl)-2-deoxy-2-sulfonatamido-6-O-sulfonato-β-D-glucopyranoside