Acetic acid (3R,4S,5R,6R)-3-acetoxy-6-acetoxymethyl-5-((2S,3S,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-2-(2,2,2-trichloro-acetimidoyloxy)-tetrahydro-pyran-4-yl ester 在
三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 、
sodium methylate 作用下,
以
四氢呋喃 、
甲醇 、
氯仿 为溶剂,
生成 Tetracosanoic acid {(E)-(1S,2R)-1-[(2R,3R,4R,5S,6R)-3,4-dihydroxy-6-hydroxymethyl-5-((2S,3S,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-yloxymethyl]-2-hydroxy-heptadec-3-enyl}-amide