[(2S,3R,5R,6S)-5-benzoyloxy-6-[(2S,3R,5R,6R)-5-[(2S,3R,5R,6S)-3,5-dibenzoyloxy-6-methyloxan-2-yl]oxy-6-[(7R)-18-methoxy-18-oxooctadecan-7-yl]oxy-2-methyloxan-3-yl]oxy-2-methyloxan-3-yl] benzoate 在
sodium methylate 、 amberlite IR-120 H 作用下,
以
甲醇 为溶剂,
反应 8.0h,
以64%的产率得到methyl (12R)-12-[(2R,3R,5R,6S)-3,5-bis[[(2S,3R,5R,6S)-3,5-dihydroxy-6-methyloxan-2-yl]oxy]-6-methyloxan-2-yl]oxyoctadecanoate