Synthesis, biological evaluation, and molecular docking study of 3-(3′-heteroatom substituted-2′-hydroxy-1′-propyloxy) xanthone analogues as novel topoisomerase IIα catalytic inhibitor
作者:Kyu-Yeon Jun、Eun-Young Lee、Mi-Ja Jung、Ok-Hee Lee、Eung-Seok Lee、Hea-Young Park Choo、Younghwa Na、Youngjoo Kwon
DOI:10.1016/j.ejmech.2011.01.011
日期:2011.6
Epoxide ring-opened xanthone derivatives were synthesized and tested for their topoisomerase inhibitory activity and cytotoxicity. Most of the compounds showed topo II alpha specific inhibitory activity. To clarify the mechanism of action of these compounds, the most potent compound (compound 14) of the synthesized analogues was further studied by testing its ATPase inhibitory activity and through molecular docking experiments. The results showed that the topo II alpha inhibitory activity of compound 14 was inversely proportional to ATP concentration. In the ATPase inhibitory test, ATP hydrolysis was reduced less efficiently by compound 14 (28.5 +/- 4.6%) than novobiocin (60.4 +/- 8.1%). Molecular docking study revealed compound 14 to have a stable binding pattern to the ATP-binding domain of human topo II. (C) 2011 Elsevier Masson SAS. All rights reserved.