(3aR,10bR,12bS)-3a-Ethyl-5-methoxycarbonyl-12a-methyl-3a,4,6,11,12,12b-hexahydro-1H-6-aza-12a-azonia-indeno[7,1-cd]fluorene; iodide                                                                                                                                                              在
                                                                                                                                         
platinum(IV) oxide                                                                                                                                                                                                                               氢气   、                                                                                                  
sodium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 16.0h,
                                                                                                                以78%的产率得到(3aS,4S,11bR)-4-Ethyl-3-methyl-4-propyl-2,3,3a,4,5,7-hexahydro-1H-pyrrolo[2,3-d]carbazole-6-carboxylic acid methyl ester