(2S,5S)-methyl 2-{(3aS,4S,6R,6aS)-6-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl}-5-methoxy-3-[2-oxoethyl]isoxazolidine-5-carboxylate 在
sodium chlorite 、
sodium dihydrogenphosphate 、
2-甲基-2-丁烯 作用下,
以
水 、
叔丁醇 为溶剂,
反应 0.33h,
以96%的产率得到(2S,5S)-methyl 2-{(3aS,4S,6R,6aS)-6-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl}-5-methoxy-3-[2-carboxyethyl]isoxazolidine-5-carboxylate