[(3R,4S,5R,6R)-5-[(2S,3R,4S,5S,6R)-4-[(2S,3R,4R,5S,6R)-3-acetamido-4,5-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-3,5-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-4-acetyloxy-6-(acetyloxymethyl)-2-(2,2,2-trichloroethanimidoyl)oxyoxan-3-yl] 2,2-dimethylpropanoate 、
(2S,3R,4E)-3-O-tert-butyldiphenylsilyl-2-N-tetracosanoylsphingenine 在
三氟甲磺酸三甲基硅酯 作用下,
以66%的产率得到[(2R,3R,4S,5R,6R)-5-[(2S,3R,4S,5S,6R)-4-[(2S,3R,4R,5S,6R)-3-acetamido-4,5-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-3,5-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-4-acetyloxy-6-(acetyloxymethyl)-2-[(E,2S,3R)-3-[tert-butyl(diphenyl)silyl]oxy-2-(tetracosanoylamino)octadec-4-enoxy]oxan-3-yl] 2,2-dimethylpropanoate