(Z)-4-((1S,2S,4R,4aS,5S,6R,7R,8aR,9S)-4,8a,9-Trihydroxy-2,5,7-trimethyl-decahydro-1,6-methano-naphthalen-2-yl)-but-2-enoic acid methyl ester                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气   、                                                                                                  
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
4-((1S,2S,4R,4aS,5S,6R,7R,8aR,9S)-8a-Hydroxy-4,9-bis-methoxymethoxy-2,5,7-trimethyl-decahydro-1,6-methano-naphthalen-2-yl)-butyric acid methyl ester