Toluene-4-sulfonic acid (S)-1-[(3S,8S,9S,10R,13S,14S,17S)-10,13-dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
盐酸   、                                                                                                  
乙醇                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
Pregn-5-en-3β,20α-diol-20-p-toluolsulfonat