Discovery of the First M<sub>5</sub>-Selective and CNS Penetrant Negative Allosteric Modulator (NAM) of a Muscarinic Acetylcholine Receptor: (<i>S</i>)-9b-(4-Chlorophenyl)-1-(3,4-difluorobenzoyl)-2,3-dihydro-1<i>H</i>-imidazo[2,1-<i>a</i>]isoindol-5(9b<i>H</i>)-one (ML375)
作者:Patrick R. Gentry、Masaya Kokubo、Thomas M. Bridges、Nathan R. Kett、Joel M. Harp、Hyekyung P. Cho、Emery Smith、Peter Chase、Peter S. Hodder、Colleen M. Niswender、J. Scott Daniels、P. Jeffrey Conn、Michael R. Wood、Craig W. Lindsley
DOI:10.1021/jm4013246
日期:2013.11.27
A functional high throughput screen and subsequent multidimensional, iterative parallel synthesis effort identified the first muscarinic acetylcholine receptor (mAChR) negative allosteric modulator (NAM) selective for the M-5 subtype. ML375 is a highly selective M-5 NAM with submicromolar potency (human M-5 IC50 = 300 nM, rat M-5 IC50 = 790 nM, M1-M4 IC50 > 30 mu M), excellent multispecies PK, high CNS penetration, and enantiospecific inhibition.