O-[2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl-(1->4)-2,3,6-tri-O-acetyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-acetyl-α-D-glucopyranosyl]trichloroacetimidate 、
3-O-benzoyl-2-N-tetracosanoyl-4-Z-D-erythro-sphingenine 在
3 A molecular sieve 、
三氟化硼乙醚 作用下,
以
氯仿 为溶剂,
反应 16.0h,
以34%的产率得到O-(2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl)-(1-4)-O-(2,3,6-tri-O-acetyl-β-D-galactopyranosyl)-(1-4)-O-(2,3,6-tri-O-acetyl-β-D-glucopyranosyl)-(1-1)-(2S,3R,4Z)-3-O-benzoyl-2-N-tetracosanoylsphingenine