Substituted dibenzo[ c,h ]cinnolines: topoisomerase I-targeting anticancer agents
作者:Younong Yu、Sudhir K Singh、Angela Liu、Tsai-Kun Li、Leroy F Liu、Edmond J LaVoie
DOI:10.1016/s0968-0896(02)00604-1
日期:2003.4
9-methylenedioxybenzo[i]phenanthridine is one of the more potent benzo[i]phenanthridine derivatives in regard to topoisomerase I-targeting activity and cytotoxicity. The structure-activity relationship observed with these substituted dibenzo[c,h]cinnolines parallels that observed for benzo[i]phenanthridine derivatives. Compared to similarly substituted benzo[i]phenanthridines, the dibenzo[c,h]cinnoline analogues
合成了几种取代的二苯并[c,h]肉桂啉,并评估了其靶向拓扑异构酶I的潜力以及相对的细胞毒性活性。选择的苯并[i]菲啶能够稳定由拓扑异构酶I和DNA形成的可裂解复合物。开始这项研究以检查本质上是苯并[i]菲啶的氮杂类似物的二苯并[c,h] cinnolines是否具有相似的药理特性。就靶向拓扑异构酶I的活性和细胞毒性而言,2,3-二甲氧基-8,9-亚甲基二氧基苯并[i]菲啶是更有效的苯并[i]菲啶衍生物之一。用这些取代的二苯并[c,h] cinnolines观察到的结构活性关系与苯并[i]菲啶衍生物观察到的相似。与类似取代的苯并[i]菲啶相比,二苯并[c,h] cinnoline类似物表现出更强的拓扑异构酶I靶向活性和细胞毒性。在评估2,3-二甲氧基-8,9-亚甲基二氧基二苯并[c,h] cinnoline和2,3-二甲氧基-8,9-亚甲基二氧基苯并[i]菲啶在人淋巴母细胞瘤中的细胞毒性时获