(2S,3R,4E)-3-O-benzoyl-2-N-tetracosanoylsphingenine 、
Gal2Ac3Ac4Ac6Ac(b1-4)Glc1F2Ac3Ac6Ac 在
molecular sieve 、 silver perchlorate 、 tin(ll) chloride 作用下,
以
氯仿 为溶剂,
以71%的产率得到Benzoic acid (E)-(R)-1-{(S)-2-[(2R,3R,4S,5R,6R)-3,4-diacetoxy-6-acetoxymethyl-5-((2S,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-yloxy]-1-tetracosanoylamino-ethyl}-hexadec-2-enyl ester