(2S,3R,4E)-3-O-benzoyl-2-N-tetracosanoylsphingenine 、
(2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl-(1->3)-2,4,6-tri-O-acetyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-acetyl-α-D-glucopyranosyl)trichloroacetimidate 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33%的产率得到O-(2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl)-(1-3)-O-(2,4,6-tri-O-acetyl-β-D-galactopyranosyl)-(1-4)-O-(2,3,6-tri-O-acetyl-β-D-glucopyranosyl)-(1-1)-(2S,3R,4E)-3-O-benzoyl-2-N-tetracosanoylsphingenine