2-O-trans-cinnamoyl-3-O-p-methoxybenzyl-4-O-n-dodecanoyl-α-L-rhamnopyranosyl-(1->4)-2-O-2(S)-methylbutyryl-3-O-p-methoxybenzyl-α-L-rhamnopyranosyl trichloroacetimidate 、
(1R,3S,5S,6S,7R,8R,20S,22R,24R,25R,26S)-6-hydroxy-7,25,26-tris[(4-methoxyphenyl)methoxy]-24-[(4-methoxyphenyl)methoxymethyl]-5-methyl-20-pentyl-2,4,9,21,23-pentaoxatricyclo[20.4.0.03,8]hexacosan-10-one 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以82%的产率得到[(2S,3S,4R,5R,6S)-4-[(4-methoxyphenyl)methoxy]-6-[(2S,3S,4R,5R,6S)-4-[(4-methoxyphenyl)methoxy]-2-methyl-5-[(2S)-2-methylbutanoyl]oxy-6-[[(1R,3S,5S,6S,7R,8R,20S,22R,24R,25R,26S)-7,25,26-tris[(4-methoxyphenyl)methoxy]-24-[(4-methoxyphenyl)methoxymethyl]-5-methyl-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