<3α-2H>-3β-hydroxy-5α-cholest-7-en-6-one                                                                                                                                                              在
                                                                                                                                                                                 
甲醇   、                                                                                                  
sodium hydroxide                                                                                                                                  作用下,
                                                                                                                                                                                        反应 0.05h,
                                                                                                                以10%的产率得到(3S,5R,9R,10R,13R,14R,17R)-3-hydroxy-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-1,2,3,4,5,9,10,11,12,13,14,15,16,17-tetradecahydro-6H-cyclopenta[a]phenanthren-6-one-3-d