| —— | 
                                        N,N-diethyl-N'-[12-(t-butoxycarbonylamino)-2,2-dimethyl-6-oxo-2H,6H-pyrano[3,2-b]xanthen-5-yl]ethanediamine | 
                                        1327276-25-4 | 
                                        C29H37N3O5 | 
                                        507.63 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        12-amino-5-((2-(diethylamino)ethyl)amino)-2,2-dimethyl-2H,6H-pyrano[3,2-b]xanthen-6-one | 
                                        1327276-19-6 | 
                                        C24H29N3O3 | 
                                        407.513 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N,N-diethyl-N'-[2,2-dimethyl-12-nitro-6-oxo-2H,6H-pyrano[3,2-b]xanthen-5-yl]ethanediamine | 
                                        1327276-15-2 | 
                                        C24H27N3O5 | 
                                        437.495 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        2,2-dimethyl-5-(4-methylbenzenesulfonyloxy)-12-nitro-2H,6H-pyrano[3,2-b]xanthen-6-one | 
                                        1327276-13-0 | 
                                        C25H19NO8S | 
                                        493.494 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        4-bromo-3,4-dihydro-2,2-dimethyl-5-(4-methylbenzenesulfonyloxy)-12-nitro-2H,6H-pyrano[3,2-b]xanthen-6-one | 
                                        1327276-12-9 | 
                                        C25H20BrNO8S | 
                                        574.406 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3,4-dihydro-2,2-dimethyl-5-(4-methylbenzenesulfonyloxy)-12-nitro-2H,6H-pyrano[3,2-b]xanthen-6-one | 
                                        1327276-11-8 | 
                                        C25H21NO8S | 
                                        495.51 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3,4-dihydro-5-hydroxy-2,2-dimethyl-12-nitro-2H,6H-pyrano-[3,2-b]xanthen-6-one | 
                                        1327276-10-7 | 
                                        C18H15NO6 | 
                                        341.32 |