| —— | 
                                        (5S)-15,16-dimethoxy-Δ1(6)-erythrinan-2,8-dione | 
                                        147060-28-4 | 
                                        C18H19NO4 | 
                                        313.353 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (5S,6R,7S)-2,2-ethylenedioxy-7-hydroxy-15,16-dimethoxy-8-oxoerythrinan | 
                                        147060-27-3 | 
                                        C20H25NO6 | 
                                        375.422 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        [(4'aS,5'S,13'bR)-11',12'-dimethoxy-6'-oxospiro[1,3-dioxolane-2,3'-2,4,4a,5,8,9-hexahydro-1H-indolo[7a,1-a]isoquinoline]-5'-yl] methanesulfonate | 
                                        —— | 
                                        C21H27NO8S | 
                                        453.513 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (5S,6R,7R)-6-ethoxycarbonyl-2,2-ethylenedioxy-7-hydroxy-15,16-dimethoxy-8-oxoerythrinan | 
                                        157007-25-5 | 
                                        C23H29NO8 | 
                                        447.485 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (4aR,5R,8S,13bS)-4a-ethoxycarbonyl-5-hydroxy-11,12-dimethoxy-6-oxospiro[1,2,4,5,8,9-hexahydroindolo[7a,1-a]isoquinoline-3,2'-1,3-dioxolane]-8-carboxylic acid | 
                                        1026581-14-5 | 
                                        C24H29NO10 | 
                                        491.495 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        diethyl (4aR,5R,8S,13bS)-5-hydroxy-11,12-dimethoxy-6-oxospiro[1,2,4,5,8,9-hexahydroindolo[7a,1-a]isoquinoline-3,2'-1,3-dioxolane]-4a,8-dicarboxylate | 
                                        156899-37-5 | 
                                        C26H33NO10 | 
                                        519.549 |