demonstrated at 25 μM. Imidazonaphthyridinones exhibited no DNA binding affinity despite significant growth inhibition activity. Interestingly, when a pyridinone pharmacophore was linked to the imidazo[1,2-a]pyridine scaffold, the geometric orientation of the link had a strong impact on the growth inhibition activity. From these results we conclude that the moderate cytotoxicity observed for these compounds is
我们最近发现,
咪唑啉并
吡啶系列中的5个和5个假环稠合的环衍
生物是有望用于开发新的DNA嵌入剂的热门化合物。在这项研究中,新型(二氢)
咪唑并[1,6]和[1,7]
萘啶(no)nes包括伪五环在内。针对四种肿瘤
细胞系筛选所有合成的化合物。化合物3(b – d)在体外具有明显的细胞毒性,并且在25μM浓度下具有DNA嵌入特性。尽管明显的生长抑制活性,但
咪唑并
萘啶
酮类仍未显示出DNA结合亲和力。有趣的是,将
吡啶酮药效团连接到
咪唑并[1,2- a]
吡啶骨架,链接的几何方向对生长抑制活性有很强的影响。从这些结果,我们得出结论,对于这些化合物观察到的中等细胞毒性与它们的DNA结合和拓扑异构酶抑制活性无关。