(1S,8aR)-2-acetyloxy-5,5,8a-trimethyl-1,5,6,7,8,8a-hexahydro-naphthalene-1-carboxylic acid (-)-menthyl ester 在
sodium methylate 、 sodium hydride 作用下,
以
甲醇 、
苯 为溶剂,
反应 5.0h,
生成 (1R,8aR)-5,5,8a-Trimethyl-2-oxo-1,2,3,5,6,7,8,8a-octahydro-naphthalene-1-carboxylic acid (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester