甲氧基-三氟甲基苯   、                                                                                      
(3S,6R)-2-Methyl-6-((3S,5S,6S,8S,9S,10R,13R,14S,15S,17R)-3,6,15-trimethoxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-heptan-3-ol                                                                                                                                                                                              以
                                                                                         
吡啶                                                                                  为溶剂,
                                                                                                                                                    反应 4.0h,
                                                                                                                生成                                                 (S)-3,3,3-Trifluoro-2-methoxy-2-phenyl-propionic acid (1S,4R)-1-isopropyl-4-((3S,5S,6S,8S,9S,10R,13R,14S,15S,17R)-3,6,15-trimethoxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentyl ester