(S)-jalapinolic acid 11-O-(2-O-trans-cinnamoyl)-[(4-O-n-dodecanoyl)]-α-L-rhamnopyranosyl-(1->4)-O-(2-O-n-decanoyl)-α-L-rhamnopyranosyl-(1->4)-O-α-L-rhamnopyranosyl-(1->2)-O-β-D-fucopyranoside intramolecular 1,3''-ester 、
乙酸酐 在
吡啶 作用下,
生成 [(2S,3S,4R,5R,6S)-4-acetyloxy-6-[(2S,3S,4R,5R,6S)-4-acetyloxy-5-decanoyloxy-2-methyl-6-[[(1S,3R,4S,5S,6R,8R,10S,22R,23S,24S,26R)-4,5,26-triacetyloxy-6,24-dimethyl-20-oxo-10-pentyl-2,7,9,21,25-pentaoxatricyclo[20.3.1.03,8]hexacosan-23-yl]oxy]oxan-3-yl]oxy-2-methyl-5-[(E)-3-phenylprop-2-enoyl]oxyoxan-3-yl] dodecanoate