(S)-jalapinolic acid 11-O-(2-O-trans-cinnamoyl)-[(4-O-n-dodecanoyl)]-α-L-rhamnopyranosyl-(1->4)-O-(3-O-n-decanoyl)-α-L-rhamnopyranosyl-(1->4)-O-α-L-rhamnopyranosyl-(1->2)-O-β-D-fucopyranoside intramolecular 1,2''-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)-5-acetyloxy-4-decanoyloxy-2-methyl-6-[[(1R,3S,5S,6S,7R,8R,20S,22R,24R,25S,26S)-7,25,26-triacetyloxy-5,24-dimethyl-10-oxo-20-pentyl-2,4,9,21,23-pentaoxatricyclo[20.4.0.03,8]hexacosan-6-yl]oxy]oxan-3-yl]oxy-2-methyl-5-[(E)-3-phenylprop-2-enoyl]oxyoxan-3-yl] dodecanoate