5-(methoxycarbonyl)pentyl 3-O-allyl-6-O-(t-butyldimethylsilyl)-β-D-galactopyranoside 在
2,3,5-三甲基吡啶 、
silver trifluoromethanesulfonate 作用下,
以
硝基甲烷 为溶剂,
生成 5-(methoxycarbonyl)pentyl 2,4-di-O-benzoyl-3,6-bis-O-(2-deoxy-3,4,6-tri-O-acetyl-2-phthalimido-β-D-glucopyranosyl)-β-D-galactopyranoside