tert-butyl (4S,5S)-5-[5-ethoxy-2-fluoro-4-methyl-5-oxo-2-pentenyl]-4-isobutyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate 在
甲醇 、
对甲苯磺酸 作用下,
生成
ethyl (3E,6S,7S)-7-[(tert-butoxycarbonyl)amino]-4-fluoro-6-hydroxy-2,9-dimethyl-3-decenoate 、
ethyl (2R,3Z,6S,7S)-7-[(tert-butoxycarbonyl)amino]-4-fluoro-6-hydroxy-2,9-dimethyl-3-decenoate