Synthesis and biological evaluation of 2-phenol-4-chlorophenyl-6-aryl pyridines as topoisomerase II inhibitors and cytotoxic agents
作者:Pritam Thapa、Tara Man Kadayat、Seojeong Park、Somin Shin、Til Bahadur Thapa Magar、Ganesh Bist、Aarajana Shrestha、Younghwa Na、Youngjoo Kwon、Eung-Seok Lee
DOI:10.1016/j.bioorg.2016.04.007
日期:2016.6
A new series of 2-phenol-4-chlorophenyl-6-aryl pyridines were designed, synthesized, and evaluated for topoisomerase (topo) I and II inhibitory activities as well as cytotoxic activity against four different human cancer cell lines such as HCT15, T47D, DU145, and Hela. Most of the tested compounds exhibited stronger topo II inhibitory activity at 100μM as compared to etoposide. All the compounds, except
设计,合成并合成了一系列新的2-苯酚-4-氯苯基-6-芳基吡啶,并评估了其对拓扑异构酶(topo)I和II的抑制活性以及对四种不同的人类癌细胞系(例如HCT15,T47D)的细胞毒活性,DU145和Hela。与依托泊苷相比,大多数被测化合物在100μM处表现出更强的topo II抑制活性。除39种化合物外,所有化合物均未显示topo I抑制活性。有趣的是,显示出比依托泊苷更好的topo II抑制作用的化合物在中央吡啶的4位具有邻-或对-氯苯基,并且没有一个化合物具有间-氯苯基。SAR研究表明,中央吡啶4位上的邻氯苯基或对氯苯基对于选择性的topo II抑制活性很重要。相似地,所有具有间羟基或对羟基苯基部分的化合物均显示出中度至显着的细胞毒性作用。特别是,对T47D乳腺癌细胞显示出优异细胞毒性(IC50 =0.68-1.25μM)的化合物27-37和39表明,在中央吡啶2位上的间位或对位羟基