RESUMO
5-{2-[4-(2-Methyl-5-quinolinyl)-1-piperazinyl]ethyl}-2(1H)-quinolinones and 3,4-dihydro-2(1H)-quinolinones have been identified with different combinations of 5-HT(1) autoreceptor antagonist and hSerT potencies and excellent rat PK profiles. The availability of tool compounds with a range of profiles at targets known to play a key role in the control of synaptic 5-HT levels will allow exploration of different pharmacological profiles in a range of animal behavioral and disease models.
Assuntos
Quinolonas/química , Receptores 5-HT1 de Serotonina/efeitos dos fármacos , Inibidores Seletivos de Recaptação de Serotonina/química , Inibidores Seletivos de Recaptação de Serotonina/farmacocinética , Animais , Autorreceptores/antagonistas & inibidores , Autorreceptores/efeitos dos fármacos , Quinolonas/farmacocinética , Ratos , Inibidores Seletivos de Recaptação de Serotonina/farmacologia , Sinapses/químicaRESUMO
Bioisoteric replacement of the metabolically labile N-methyl amide group of a series of benzoxazinones with small heterocyclic rings has led to novel series of fused tricyclic benzoxazines which are potent 5-HT(1A/B/D) receptor antagonists with and without concomitant human serotonin transporter (hSerT) activity. Optimizing against multiple parameters in parallel identified 6-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}-4H-imidazo[5,1-c][1,4]benzoxazine-3-carboxamide (GSK588045) as a potent 5-HT(1A/B/D) receptor antagonist with a high degree of selectivity over human ether-a-go-go related gene (hERG) potassium channels, favorable pharmacokinetics, and excellent activity in vivo in rodent pharmacodynamic (PD) models. On the basis of its outstanding overall profile, this compound was progressed as a clinical candidate with the ultimate aim to assess its potential as a faster acting antidepressant/anxiolytic with reduced side-effect burden.
Assuntos
Ansiolíticos/síntese química , Antidepressivos/síntese química , Benzoxazinas/síntese química , Antagonistas do Receptor 5-HT1 de Serotonina , Animais , Ansiolíticos/farmacocinética , Ansiolíticos/farmacologia , Antidepressivos/farmacocinética , Antidepressivos/farmacologia , Benzoxazinas/farmacocinética , Benzoxazinas/farmacologia , Callithrix , Linhagem Celular , Córtex Cerebral/metabolismo , Cricetinae , Cricetulus , Sistema Enzimático do Citocromo P-450/metabolismo , Canal de Potássio ERG1 , Canais de Potássio Éter-A-Go-Go/metabolismo , Cobaias , Humanos , Técnicas In Vitro , Masculino , Microssomos Hepáticos/metabolismo , Ligação Proteica , Ensaio Radioligante , Ratos , Ratos Sprague-Dawley , Proteínas da Membrana Plasmática de Transporte de Serotonina/metabolismo , Relação Estrutura-AtividadeRESUMO
8-[2-(4-Aryl-1-piperazinyl)ethyl]-2H-1,4-benzoxazin-3(4H)-ones have been identified as highly potent 5-HT(1A/B/D) receptor antagonists with and without additional SerT activity and a high degree of selectivity over hERG potassium channels. Modulation of the different target activities gave compounds with a range of profiles suitable for further in vivo characterization.
Assuntos
Benzoxazinas/química , Piperazinas/química , Inibidores Seletivos de Recaptação de Serotonina/química , Antagonistas do Receptor 5-HT1 de Serotonina , Antagonistas da Serotonina/química , Animais , Benzoxazinas/metabolismo , Benzoxazinas/farmacologia , Células CHO , Cricetinae , Cricetulus , Canal de Potássio ERG1 , Canais de Potássio Éter-A-Go-Go/antagonistas & inibidores , Canais de Potássio Éter-A-Go-Go/metabolismo , Humanos , Piperazinas/metabolismo , Piperazinas/farmacologia , Ratos , Receptores 5-HT1 de Serotonina/metabolismo , Antagonistas da Serotonina/metabolismo , Antagonistas da Serotonina/farmacologia , Inibidores Seletivos de Recaptação de Serotonina/metabolismo , Inibidores Seletivos de Recaptação de Serotonina/farmacologiaRESUMO
Investigation of a series 6-[2-(4-aryl-1-piperazinyl)ethyl]-2H-1,4-benzoxazin-3(4H)-ones has led to the discovery of potent 5-HT(1A/1B/1D) receptor antagonists with and without additional SerT affinity. Modulation of the different target activities gave compounds with a range of profiles suitable for further in vivo characterization.
