Quantitative structure–activity relationships for a series of symmetrical bisquaternary anticancer compounds
作者:Joaquı́n M. Campos、Marı́a C. Núñez、Rosario M. Sánchez、José A. Gómez-Vidal、Agustı́n Rodrı́guez-González、Mónica Báñez、Miguel A. Gallo、Juan Carlos Lacal、A. Espinosa
DOI:10.1016/s0968-0896(02)00054-8
日期:2002.7
The electron characteristic of the substituent at position 4 of the heterocycle and the theoretical lipophilic character of the whole molecule were found to significantly affect the antitumour activity. 1,1'-[Ethylenebis(benzene-1,4-diylmethylene)]bis[4-(N-methylanilino)pyridinium] dibromide is the most active compound of the series so far described and shows a reasonable agreement between predicted
合成了具有不同极性头的56个双阳离子二溴化物[双(4-取代)吡啶鎓,双(4-氨基喹啉鎓),双喹啉鎓和双异喹啉鎓部分]以及两个带电氮原子之间的几个间隔基。这种定向合成产生了45种胆碱激酶抑制剂,它们具有针对HT-29细胞系的抗肿瘤活性。为了理解抗增殖活性,建立了定量的构效关系。通过(13)C NMR光谱以简单的方式估算出二烯丙基氨基,吡咯烷基,哌啶子基和全氢氮庚啶基的未知sigma(R)和sigma(+)描述符,以及N-甲基苯胺基部分的sigma(R),快速且可重复的方式。发现在杂环的4位的取代基的电子特征和整个分子的理论亲脂性显着影响抗肿瘤活性。1,1'-[乙撑双(苯-1,4-二甲基亚甲基)]双[4-(N-甲基苯胺基)吡啶鎓]二溴化物是迄今为止描述的最活跃的化合物,在预测的和观察到的抗增殖剂之间显示出合理的一致性数据(预测的pIC(50)= 6.50,实验的pIC(50)= 6.46)。