3-O-(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl(1-2)-3,4-di-O-acetyl-α-L-arabinopyranosyl)-23-O-acetylhederagenin 在
草酰氯 、
sodium methylate 、
三乙胺 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 29.0h,
生成 (4aS,6aR,6aS,6bR,8aR,9R,10S,12aR,14bS)-N-cyclopropyl-10-[(2S,3R,4S,5S)-4,5-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-9-(hydroxymethyl)-2,2,6a,6b,9,12a-hexamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carboxamide