Abstract:
:A novel series of 3-heteroaryl-5,6-bis(aryl)-1-methyl-2-pyridones were developed with high affinity for the benzodiazepine (BZ) binding site of human gamma-aminobutyric acid (GABA(A)) receptor ion channels, low binding selectivity for alpha 2- and/or alpha 3- over alpha 1-containing GABA(A) receptor subtypes and high binding selectivity over alpha 5 subtypes. High affinity appeared to be associated with a coplanar conformation of the pyridone and sulfur-containing 3-heteroaryl rings resulting from an attractive S.O intramolecular interaction. Functional selectivity (i.e., selective efficacy) for alpha 2 and/or alpha 3 GABA(A) receptor subtypes over alpha1 was observed in several of these compounds in electrophysiological assays. Furthermore, an alpha 3 subtype selective inverse agonist was proconvulsant and anxiogenic in rodents while an alpha 2/alpha 3 subtype selective partial agonist was anticonvulsant and anxiolytic, supporting the hypothesis that subtype selective BZ site agonists may provide new anxiolytic therapies.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Collins I,Moyes C,Davey WB,Rowley M,Bromidge FA,Quirk K,Atack JR,McKernan RM,Thompson SA,Wafford K,Dawson GR,Pike A,Sohal B,Tsou NN,Ball RG,Castro JLdoi
10.1021/jm0110789keywords:
subject
Has Abstractpub_date
2002-04-25 00:00:00pages
1887-900issue
9eissn
0022-2623issn
1520-4804pii
jm0110789journal_volume
45pub_type
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