摘要:
The design, synthesis, and evaluation of 6-6-7 tricyclic quinolones containing the strained spirocycle moiety aiming at the GSK-3 beta inhibitor were described. Among the synthesized compounds, 44, having a cyclobutane ring on a spirocycle, showed excellent GSK-3b inhibitory activity in both cell-free and cell-based assays (IC50 = 36 nM, EC50 = 3.2 mu M, respectively). Additionally, 44 decreased the plasma glucose concentration dose-dependently after an oral glucose tolerance test in mice. (C) 2011 Elsevier Ltd. All rights reserved.