Synthesis and Antitumor Activity of 4-Aminomethylthioxanthenone and 5-Aminomethylbenzothiopyranoindazole Derivatives
                                
                                    
                                        作者:Robert B. Perni、Mark P. Wentland、Jianhua I. Huang、Ronald G. Powles、Suzanne Aldous、Kristina M. Klingbeil、A. Danielle Peverly、Ronald G. Robinson、Thomas H. Corbett、Julie L. Jones、Kenneth C. Mattes、James B. Rake、Susan A. Coughlin                                    
                                    
                                        DOI:10.1021/jm9708083
                                    
                                    
                                        日期:1998.9.1
                                    
                                    Two new series of antitumor agents, 4-aminomethylthioxanthenones (6-50) and 5-aminomethylbenzothiopyranoindazoles (51-61), are described and compared. Nearly all members of both series display excellent in vivo activity versus murine pancreatic adenocarcinoma 03 (Panc03) although there is little to distinguish the two series from each other. In both series there is no discernible relationship between structure and in vivo efficacy. Selected analogues were evaluated in vitro; all were observed to have moderate to strong DNA binding via intercalation. However, varying degrees of in vitro P388 cytotoxicity and topoisomerase II inhibition were seen. In general, those molecules which exhibited strong topoisomerase II inhibition were significantly more cytotoxic than those which did not. In both series, those derivatives (48-50, 60, and 61) having a phenolic hydroxy substitution exhibited the most potent P388 cytotoxicity and topoisomerase II inhibition.