Acetic acid (4S,5R,6R,6aS,10aR)-4-hydroxy-3-isopropyl-6,9,10a-trimethyl-1,2,4,5,6,6a,7,8,10,10a-decahydro-dicyclopenta[a,d]cycloocten-5-yl ester                                                                                                                                                              在
                                                                                                                                                                                 Celite   、                                                                                                  
sodium acetate   、                                                                                                  
pyridinium chlorochromate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以77%的产率得到Acetic acid (5R,6R,6aS,10aR)-3-isopropyl-6,9,10a-trimethyl-4-oxo-1,2,4,5,6,6a,7,8,10,10a-decahydro-dicyclopenta[a,d]cycloocten-5-yl ester