Synthesis, Topoisomerase I Inhibitory Activity, and in Vivo Evaluation of 11-Azacamptothecin Analogs
作者:David E. Uehling、Suganthini S. Nanthakumar、Dallas Croom、David L. Emerson、Peter P. Leitner、Michael J. Luzzio、Gordon McIntyre、Bradley Morton、Salvadore Profeta
DOI:10.1021/jm00007a008
日期:1995.3
based on a novel template, 11-aza-(20S)-camptothecin, were obtained from total synthesis and tested as potential anticancer drugs in the topoisomerase I enzyme cleavable complex assay. The parent compound 11-aza-(20S)-camptothecin (8) was derived from a Friedlander condensation between the known aminopyridine derivative 3-(3-amino-4-picolylidene)-p-toluidine and optically active tricyclic ketone 7. Compound
从总合成中获得了一系列基于新型模板11-氮杂-(20S)-喜树碱的类似物,并在拓扑异构酶I酶可裂解复合物测定中作为潜在的抗癌药进行了测试。母体化合物11-氮杂-(20S)-喜树碱(8)衍生自已知氨基吡啶衍生物3-(3-氨基-4-吡啶基亚甲基)-对甲苯胺与旋光性三环酮7之间的弗里德兰德缩合反应。化合物8在小牛胸腺拓扑异构酶I可裂解复合物测定中,其活性约为(20S)-喜树碱的两倍。制备了其中11-氮杂氮原子被季铵化为相应的N-氧化物或甲基碘的化合物。具有季铵化N-11的化合物显示出改善的水溶性,并且在可裂解复合物测定中与临床研究的喜树碱类似物拓扑替康相当。在携带HT-29人结肠癌异种移植物的裸鼠体内评估了这些化合物。当与未处理的对照相比时,发现类似物11-氮杂-(20S)-喜树碱11-N-氧化物显着阻碍肿瘤生长。最后,使用10-溴-7-烷基-11-氮杂-(20S)-喜树碱19和20的Pd(0)偶联反应合成了7