early study on the structural modifications of clioquinol, more 8-hydroxyquinoline-derived Mannich bases were synthesized and examined for growth-inhibitory effect. Taken Mannich base 1 as our lead compound, upon replacement of either sulfonyl group with methylene group or piperazine ring with ethylenediamine group resulted in an appreciable increase in potency. On the other hand, as 8-hydroxyquinoline
为了继续我们对
氯喹醇的结构修饰的早期研究,合成了更多的
8-羟基喹啉衍生的曼尼希碱,并检查了其抑制生长的作用。以曼尼希碱1为先导化合物,用亚甲基取代磺酰基或用
乙二胺基取代
哌嗪环后,效力显着提高。另一方面,当用
酚,3-
羟基吡啶和1-
萘酚代替
8-羟基喹啉时,观察到活性急剧下降,表明
8-羟基喹啉是活性的关键支架。对HeLa细胞的进一步3D-Q
SAR分析表明,空间效应和电子效应均对生长抑制有同等作用。两者合计,从两者获得的结构-活性关系体外数据和CoMFA模型值得进一步研究提供有价值的参考。