描述:
(S)-5-[(1S,4aR,6S,7R,8aR)-7-Hydroxy-2,5,5,8a-tetramethyl-6-((Z)-2-methyl-but-2-enoyloxy)-1,4,4a,5,6,7,8,8a-octahydro-naphthalen-1-yl]-3-methyl-pentanoic acid methyl ester 在
jones reagent 作用下,
以520 mg的产率得到(S)-3-Methyl-5-[(1S,4aR,6S,8aR)-2,5,5,8a-tetramethyl-6-((Z)-2-methyl-but-2-enoyloxy)-7-oxo-1,4,4a,5,6,7,8,8a-octahydro-naphthalen-1-yl]-pentanoic acid methyl ester