methyl 5-acetamido-7,8,9-tri-O-acetyl-2,6-anhydro-4-O-cyanomethyl-3,5-dideoxy-D-glycero-D-galacto-non-2-enonate 在
fluorine 作用下,
以
氯仿 为溶剂,
反应 0.17h,
以85%的产率得到methyl 5-acetamido-7,8,9-tri-O-acetyl-4-O-cyanomethyl-2,5-dideoxy-2β,3β-difluoro-β-D-erythro-L-gluco-2-nonulopyranosonate