A series of seventeen 1,8-naphthyridine derivatives (5a-5q) conjugated at N1 to various substituted phenyl rings were designed and synthesized as potential topoisomerase II (Topo II) inhibitors. The antiproliferative activity of the target compounds against three cancer cell lines showed that compounds 5g and 5p had the highest antiproliferative activity. In addition, 5p and 5g displayed a high selectivity
设计并合成了一系列在N 1处与各种取代苯环缀合的 17 个
1,8-萘啶衍
生物 ( 5a-5q )作为潜在的拓扑异构酶 II (Topo II)
抑制剂。目标化合物对三种癌
细胞系的抗增殖活性表明,化合物5g和5p具有最高的抗增殖活性。此外,当在WI38正常细胞上测试时, 5p和5g对癌细胞表现出高选择性指数(SI),其中化合物5p表现出最高的SI。此外,5g和5p分别诱导细胞周期停滞在 S 期和 G1/S 期,引发 HepG-2 细胞凋亡。两种化合物的体外 Topo II 抑制作用(基于质粒)表明5p对 Topo II 具有更好的抑制作用。此外,与已知的拓扑异构酶
抑制剂(
阿霉素和
拓扑替康)相比,5p显示出有效的拓扑异构酶 IIβ 抑制作用。分子对接提出了拓扑异构酶 IIβ
依托泊苷结合袋中5p的独特结合模式,证实了其作为拓扑异构酶 II 毒物的潜在作用。因此,选择5p进行放射性
碘标记,以研