(2S,3S,4S,5R,6S)-5,6-bis(tert-butyldimethylsilyloxy)-2-[(2'R,3'R)-2',3'-O-(isopropylidene)hexacosanoylamino]-3,4-O-(isopropylidene)octadecyl 4,6-O-(di-tert-butyl)silylene-α-D-galactopyranoside 在
吡啶 、 pyridine hydrofluoride 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以78%的产率得到(2S,3S,4S,5R,6S)-5,6-bis(tert-butyldimethylsilyloxy)-2-[(2'R,3'R)-2',3'-O-(isopropylidene)hexacosanoylamino]-3,4-O-(isopropylidene)octadecyl α-D-galactopyranoside