Methanesulfonic acid (2S,3S,4R,5R,6R)-4,5-bis-benzyloxy-6-((2R,3R,4R,5S,6S)-3,4-bis-benzyloxy-6-fluoromethyl-5-methanesulfonyloxy-tetrahydro-pyran-2-yloxy)-2-fluoromethyl-tetrahydro-pyran-3-yl ester 在
sodium azide 作用下,
以
六甲基磷酰三胺 为溶剂,
反应 16.0h,
以72%的产率得到4-azido-2,3-di-O-benzyl-4,6-dideoxy-6-fluoro-α-D-galactopyranosyl 4-azido-2,3-di-O-benzyl-4,6-dideoxy-6-fluoro-α-D-galactopyranoside