p-methoxyphenyl 2,3-di-O-benzoyl-4-O-mesyl-6-O-tert-butyldiphenylsilyl-β-D-glucopyranoside 在
silica-supported perchloric acid 作用下,
以
乙腈 为溶剂,
反应 0.03h,
以69%的产率得到[(1R,2R,3R,4R,5R)-4-benzoyloxy-2-methylsulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-3-yl] benzoate