(1S,2R,3S)-4'-Isopropyl-5'-methoxy-2-methoxycarbonylmethyl-1,3-dimethyl-3',6'-dioxo-bicyclohexyl-1',4'-diene-3-carboxylic acid methyl ester 、
硫酸二甲酯 在
platinum(IV) oxide sodium hydroxide 、
氢气 作用下,
以0.920 g的产率得到(1S,2R,3S)-3-(4-Isopropyl-2,3,5-trimethoxy-phenyl)-2-methoxycarbonylmethyl-1,3-dimethyl-cyclohexanecarboxylic acid methyl ester