methyl [(2,3-difluorobenzyl) 5-acetamido-9-(4-chlorobenzamido)-3,5,9-trideoxy-7,8-O-isopropylidene-D-glycero-α-D-galacto-2-nonulopyranosid]onate 、
O-Phenyl carbonochloridothioate 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
以83%的产率得到methyl [(2,3-difluorobenzyl) 5-acetamido-9-(4-chlorobenzamido)-3,5,9-trideoxy-7,8-O-isopropylidene-4-O-(phenoxycarbonothioyl)-D-glycero-α-D-galacto-2-nonulopyranosid]onate