3,4-Dihydronaphthalen-1(2H)-ones: novel ligands for the benzodiazepine site of α5-containing GABAA receptors
2004
Abstract A series of substituted 3,4-dihydronaphthalen-1(2 H )-ones with high binding affinity for the benzodiazepine site of GABA A receptors containing the α5-subunit has been identified. These compounds have consistently higher binding affinity for the GABA A α5 receptor subtype over the other benzodiazepine-sensitive GABA A receptor subtypes (α1, α2 and α3). Compounds with a range of efficacies for the benzodiazepine site of α5-containing GABA A receptors were identified, including the α5 inverse agonist 3,3-dimethyl-8-methylthio-5-(pyridin-2-yl)-3,4-dihydronaphthalen-1(2 H )-one 22 and the α5 agonist 8-ethylthio-3-methyl-5-(1-oxidopyridin-2-yl)-3,4-dihydronaphthalen-1(2 H )-one 19 .
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