hepta-O-acetyllactosyl-1-trichloroacetimidate 、
(2S,3R,4S)-2-<(2R)-2-(benzoyloxy)tetracosanoylamino>-3,4-dibenzoyloxy-1-hexadecanol 在
4 A molecular sieve 、
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 18.0h,
以39%的产率得到(2S,3R,4S)-3,4-bis(benzoyloxy)-2-<(2R)-2-(benzoyloxy)tetracosanoylamino>-1-(O-<2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl>-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranosyloxy)hexadecane