methyl (methyl 5-acetamido-4,7,8-tri-O-benzyl-3,5-dideoxy-β-D-glycero-D-galacto-2-nonulopyranosid)onate 在
二乙胺基三氟化硫 作用下,
以
二氯甲烷 为溶剂,
以68%的产率得到methyl (methyl 5-acetamido-4,7,8-tri-O-benzyl-3,5,9-trideoxy-9-fluoro-β-D-glycero-D-galacto-2-nonulopyranosid)onate