(3bS,6R,8aS,8bS,10aR)-10-Methoxy-3a,5a-dimethyl-6-[(1R,4R)-1-methyl-4-((1R,2R)-2-methyl-cyclopropyl)-pentyl]-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene                                                                                                                                                              在
                                                                                                                                                                                 
对甲苯磺酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (8S,9S,14S,17R)-10,13-Dimethyl-17-[(1R,4R)-1-methyl-4-((1R,2R)-2-methyl-cyclopropyl)-pentyl]-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol