Synthesis and Biological Evaluation of Pyrazolo[3,4-<i>b</i>]pyridin-4-ones as a New Class of Topoisomerase II Inhibitors
作者:Mojgan Tabrizi、Pier Baraldi、Stefania Baraldi、Filippo Prencipe、Delia Preti、Giulia Saponaro、Romeo Romagnoli、Stefania Gessi、Stefania Merighi、Angela Stefanelli、Debora Fazzi、Pier Borea、Rodolfo Maia、Nelilma Romeiro、Carlos Fraga、Eliezer Barreiro
DOI:10.2174/1573406411666141210141317
日期:2015.4.29
A series of 1,3,6-triphenylpyrazolo[3,4-b]pyridin-4-one derivatives was designed, synthesized and evaluated
for cytotoxic activity in A375 human melanoma and human erythroleukemia (HEL) cells. The new pyrazolopyridones
displayed comparable activities to the antitumor compound etoposide. The inhibitory effect of compounds 17, 18, 27 and
32 against topoisomerase II-mediated cleavage activities was measured finding good correlation with the results obtained
from MTS assay. Docking studies into bacterial topoisomerase II (DNA Gyrase), topoisomerase IIα and topoisomerase
IIβ binding sites in the DNA binding interface were performed.
设计、合成并评估了一系列1,3,6-三苯基吡唑并[3,4-b]吡啶-4-酮衍生物在A375人黑素瘤细胞和人类红细胞白血病(HEL)细胞中的细胞毒性活性。这些新的吡唑吡啶酮表现出与抗肿瘤化合物依托泊苷相当的活性。化合物17、18、27和32对拓扑异构酶II介导的裂解活性的抑制效果进行了测量,发现与MTS测定结果有良好的相关性。同时,对细菌拓扑异构酶II(DNA旋转酶)、拓扑异构酶IIα和拓扑异构酶IIβ在DNA结合界面上的结合位点进行了对接研究。