Development and SAR of functionally selective allosteric modulators of GABAA receptors
作者:Cristobal Alhambra、Chris Becker、Timothy Blake、Amy (Hui-Fang) Chang、James R. Damewood、Thalia Daniels、Bruce T. Dembofsky、David A. Gurley、James E. Hall、Keith J. Herzog、Carey L. Horchler、Cyrus J. Ohnmacht、Richard Jon Schmiesing、Adam Dudley、Maria D. Ribadeneira、Katherine S. Knappenberger、Carla Maciag、Mark M. Stein、Maninder Chopra、Xiaodong F. Liu、Edward P. Christian、Jeffrey L. Arriza、Marc J. Chapdelaine
DOI:10.1016/j.bmc.2011.03.035
日期:2011.5
Positive modulators at the benzodiazepine site of alpha 2- and alpha 3-containing GABA(A) receptors are believed to be anxiolytic. Through oocyte voltage clamp studies, we have discovered two series of compounds that are positive modulators at alpha 2-/alpha 3-containing GABA(A) receptors and that show no functional activity at alpha 1-containing GABAA receptors. We report studies to improve this functional selectivity and ultimately deliver clinical candidates. The functional SAR of cinnolines and quinolines that are positive allosteric modulators of the alpha 2- and alpha 3-containing GABA(A) receptors, while simultaneously neutral antagonists at alpha 1-containing GABAA receptors, is described. Such functionally selective modulators of GABA(A) receptors are expected to be useful in the treatment of anxiety and other psychiatric illnesses. (C) 2011 Elsevier Ltd. All rights reserved.
Developing dual functional allosteric modulators of GABAA receptors
作者:Xiaodong F. Liu、Hui-Fang Chang、Richard Jon Schmiesing、Steven S. Wesolowski、Katharine S. Knappenberger、Jeffrey L. Arriza、Marc J. Chapdelaine
DOI:10.1016/j.bmc.2010.09.058
日期:2010.12
Positive modulators at benzodiazepine sites of alpha 2- and alpha 3-containing GABA(A) receptors are believed to be anxiolytic. Negative allosteric modulators of alpha 5-containing GABA(A) receptors enhance cognition. By oocyte two-electrode voltage clamp and subsequent structure-activity relationship studies, we discovered cinnoline and quinoline derivatives that were both positive modulators at alpha 2-/alpha 3-containing GABA(A) receptors and negative modulators at alpha 5-containing GABA(A) receptors. In addition, these compounds showed no functional activity at alpha 1-containing GABA(A) receptors. Such dual functional modulators of GABA(A) receptors might be useful for treating comorbidity of anxiety and cognitive impairments in neurological and psychiatric illnesses. (C) 2010 Elsevier Ltd. All rights reserved.