(1S,2R,6S,8R)-5-(3-cyclohexylpropanoyl)-11,11-dimethyl-3,7,10,12-tetraoxa-5-azatricyclo[6.4.0.02,6]dodecan-4-one 、
碘甲烷 在
lithium diisopropyl amide 作用下,
生成 (3aS,4aR,8aS,8bR)-3-((R)-3-Cyclohexyl-2-methyl-propionyl)-7,7-dimethyl-hexahydro-[1,3]dioxino[4',5':4,5]furo[2,3-d]oxazol-2-one 、 (3aS,4aR,8aS,8bR)-3-((S)-3-Cyclohexyl-2-methyl-propionyl)-7,7-dimethyl-hexahydro-[1,3]dioxino[4',5':4,5]furo[2,3-d]oxazol-2-one