2-((3aR,4S,5S,6aR)-5-Methoxycarbonylmethyl-4,5-dimethyl-3-oxo-hexahydro-cyclopenta[c]furan-4-yl)-2-methyl-propionic acid methyl ester 在
sodium hydride 作用下,
以
二甲基亚砜 为溶剂,
反应 1.0h,
以90 mg的产率得到(3aR,3bS,6aR,7aR)-5-Hydroxy-3b,4,4,6a-tetramethyl-3-oxo-1,3,3a,3b,4,6a,7,7a-octahydro-pentaleno[1,2-c]furan-6-carboxylic acid methyl ester