1-(3,4-dimethoxyphenethyl)-3-hydroxy-3-(trifluoromethyl)-6,7-dihydro-1H-indole-2,4(3H,5H)-dione                                                                                                                                                              在
                                                                                                                                                                                 
磷酸                                                                                                                                  作用下,
                                                                                                                                                                                        反应 2.0h,
                                                                                                                生成                                                 
(4aS,5S,13bR)-5-(trifluoromethyl)-2,3,4a,5,8,9-hexahydro-5-hydroxy-11,12-dimethoxy-1H-indolo[1-a]isoquinoline-4,6-dione   、                                                                                             (4aR,5S,13bS)-5-(trifluoromethyl)-2,3,4a,5,8,9-hexahydro-5-hydroxy-11,12-dimethoxy-1H-indolo[1-a]isoquinoline-4,6-dione