乙酸酐 、
(2S,3S,4R,5R,6Z)-1-O-(β-D-glucopyranosyl)-2N-<(2'R)-2'-hydroxy-(19'Z)-octacosenoyl>-6(Z)-octadecene-1,3,4,5-tetraol-2-amino 在
吡啶 作用下,
生成 Acetic acid (2R,3R,4S,5R,6R)-3,5-diacetoxy-2-acetoxymethyl-6-[(Z)-(2S,3S,4R,5R)-3,4,5-triacetoxy-2-((Z)-(R)-2-acetoxy-octacos-19-enoylamino)-octadec-6-enyloxy]-tetrahydro-pyran-4-yl ester