Topoisomerase I and II inhibitory activity, cytotoxicity, and structure–activity relationship study of dihydroxylated 2,6-diphenyl-4-aryl pyridines
摘要:
A new series of thirty-six dihydroxylated 2,6-diphenyl-4-aryl pyridines containing hydroxyl groups at the ortho, meta, or para position of 2- and 6-phenyl rings attached to the central pyridine were designed and synthesized. They were evaluated for topoisomerase I and II inhibitory activity and cytotoxicity against several human cancer cell lines for the development of novel anticancer agents. Most of the compounds with hydroxyl moiety either at the meta or para position of 2- or 6-phenyl ring in combination with thienyl or furyl group at 4-position of central pyridine displayed significant topoisomerase II inhibitory activity and cytotoxicity. Positive correlation between topoisomerase II inhibitory activity and cytotoxicity was observed for the compounds 9-11, 15-17, 19, 21-23, 28, and 41. Among all the synthesized compounds, compound 17 emerged as the most promising topoisomerase II inhibitor with significant cytotoxicity. (C) 2015 Elsevier Ltd. All rights reserved.
Solvent- and catalyst-free synthesis of new hydroxylated trisubstituted pyridines under microwave irradiation
作者:Guodong Yin、Qiong Liu、Junrui Ma、Nengfang She
DOI:10.1039/c2gc35243e
日期:——
A facile solvent- and catalyst-free method for the synthesis of a series of new hydroxylated 2,4,6-trisubstituted pyridinesundermicrowave irradiation was developed. The expected products were obtained through a simplified purification process without protection of the hydroxyl group. UV-Vis and fluorescence spectra of these conjugated multi-hydroxyl compounds were also investigated.