Acetic acid (1aR,4aR,4bS,6aR,7R,9aS,9bS,10aS)-7-((R)-1,5-dimethyl-hexyl)-4a,6a-dimethyl-1,1a,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-cyclopenta[a]cyclopropa[j]fluoren-2-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
溴                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氯化碳                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
(1aR,3R,4aR,4bS,6aR,7R,9aS,9bS,10aS)-3-Bromo-7-((R)-1,5-dimethyl-hexyl)-4a,6a-dimethyl-tetradecahydro-cyclopenta[a]cyclopropa[j]fluoren-2-one