(2S,5S,6S,5'S)-5'-hydroxy-2'-oxo-3'-(phenylsulfinyl)spirocyclopentane-5,6-dimethoxy-5,6-dimethyl-[1,4]dioxane 在
calcium carbonate 作用下,
以
甲苯 为溶剂,
反应 10.0h,
以80%的产率得到(2S,5S,6S,5'S)-5'-hydroxy-2'-oxospiropent-3'-ene-5,6-dimethoxy-5,6-dimethyl-[1,4]dioxane