benzyl 2-acetamido-2,3-dideoxy-3-C-(ethyl 2',3'-anhydro-4'-deoxy-α-D-ribo-hexopyranosyluronate)methyl-4,6-O-isopropylidene-α-D-glucopyranoside 、
叔丁基二甲硅基三氟甲磺酸酯 在
吡啶 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以90%的产率得到benzyl 2-acetamido-2,3-dideoxy-3-C-(ethyl 2'-tbutyldimethylsilyl-3',4'-dideoxy-α-D-erythro-hex-3'-enopyranosyluronate)methyl-4,6-O-isopropylidene-α-D-glucopyranoside