Chromophore-modified antineoplastic imidazoacridinones. Synthesis and activity against murine leukemias
                                
                                    
                                        作者:Wieslaw M. Cholody、Sante Martelli、Jerzy Konopa                                    
                                    
                                        DOI:10.1021/jm00080a026
                                    
                                    
                                        日期:1992.1
                                    
                                    The synthesis of 8-hydroxy and 8-methoxy analogues of some substituted 5-aminoimidazoacridinones (4) is described.  The synthesis was carried out by a three-step sequence from the corresponding 1-chloro-4-nitro-9(10H)-acridinone precursors (1).  The annulation of the imidazolo ring onto the aminoacridinone chromophore was accomplished by heating the required aminoacridinone (3) with formic acid or, in the case of 1-methyl derivatives, with N,N-dimethylacetamide.  Potent cytotoxic activity against L1210 leukemia, as well as antitumor activity against P388 leukemia in mice, was demonstrated for the 8-hydroxy analogues.  The corresponding 8-methoxy derivatives were not cytotoxic.  However, in some cases, they showed significant in vivo antileukemic activity.