(R)-5-{(S)-6-[(1S,2R)-2-(2-Hydroxy-ethyl)-1,2-dimethyl-6-oxo-cyclohexyl]-2-methyl-4-oxo-hexyl}-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester 在
吡啶 、
戴斯-马丁氧化剂 作用下,
以
二氯甲烷 为溶剂,
以99%的产率得到(R)-5-{(S)-6-[(1S,2R)-1,2-Dimethyl-6-oxo-2-(2-oxo-ethyl)-cyclohexyl]-2-methyl-4-oxo-hexyl}-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester