Discovery of the First Highly M5-Preferring Muscarinic Acetylcholine Receptor Ligand, an M5 Positive Allosteric Modulator Derived from a Series of 5-Trifluoromethoxy <i>N</i>-Benzyl Isatins
作者:Thomas M. Bridges、Joy E. Marlo、Colleen M. Niswender、Carrie K. Jones、Satyawan B. Jadhav、Patrick R. Gentry、Hyekyung C. Plumley、C. David Weaver、P. Jeffrey Conn、Craig W. Lindsley
DOI:10.1021/jm900286j
日期:2009.6.11
This report describes the discovery and initial characterization of the first positive allosteric modulator of muscarinic acetylcholine receptor subtype 5 (mAChR5 or M5). Functional HTS, identified VU0119498, which displayed micromolar potencies for potentiation of acetylcholine at M1, M3, and M5 receptors in cell-based Ca2+ mobilization assays. Subsequent optimization led to the discovery of VU0238429, which possessed an EC50 of approximately 1.16 mu M at M5 with >30-fold selectivity versus M1 and M3, with no M2 or M4 potentiator activity.