Synthesis of anticonvulsive AMPA antagonists: 4-Oxo-10-substituted-imidazo[1,2- a]indeno[1,2- e]pyrazin-2-carboxylic acid derivatives

The overstimulation of excitatory amino acid receptors such as the glutamate AMPA receptor has been implicated in the physiopathogenesis of epilepsy as well as in acute and chronic neurodegenerative disorders. An original series of readily water soluble 4-oxo-10-substituted-imidazo[1,2- a]indeno[1,2...

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Veröffentlicht in:Bioorganic & medicinal chemistry letters 2001-05, Vol.11 (9), p.1205-1210
Hauptverfasser: Stutzmann, Jean-Marie, Bohme, Georg Andrees, Boireau, Alain, Damour, Dominique, Debono, Marc Williams, Genevois-Borella, Arielle, Jimonet, Patrick, Pratt, Jeremy, Randle, John C.R, Ribeill, Yves, Vuilhorgne, Marc, Mignani, Serge
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container_end_page 1210
container_issue 9
container_start_page 1205
container_title Bioorganic & medicinal chemistry letters
container_volume 11
creator Stutzmann, Jean-Marie
Bohme, Georg Andrees
Boireau, Alain
Damour, Dominique
Debono, Marc Williams
Genevois-Borella, Arielle
Jimonet, Patrick
Pratt, Jeremy
Randle, John C.R
Ribeill, Yves
Vuilhorgne, Marc
Mignani, Serge
description The overstimulation of excitatory amino acid receptors such as the glutamate AMPA receptor has been implicated in the physiopathogenesis of epilepsy as well as in acute and chronic neurodegenerative disorders. An original series of readily water soluble 4-oxo-10-substituted-imidazo[1,2- a]indeno[1,2- e]pyrazin-2-carboxylic acid derivatives was synthesized. The most potent derivative 6a exhibited nanomolar binding affinity (IC 50=35 nM) and antagonist activity (IC 50=6 nM) at ionotropic AMPA receptor. This compound also demonstrated potent anticonvulsant properties in MES in mice and rats with long durations of action with ED 50 values in the 1–3 mg/kg dose range following ip and iv administration. The 4-oxo-imidazo[1,2- a]indeno[1,2- e]pyrazin-2-carboxylic acid 1 exhibited strong binding affinity for the AMPA receptor (IC 50=35 nM) and potent antagonist activity against electrophysiological responses (IC 50=6 nM). Compound 1 demonstrated also an anticonvulsant effect at low doses in MES test with ED 50 values between 1 and 3 mg/kg dose range following ip and iv administration (mouse) and extended long duration of action following iv administration (mouse and rats).
doi_str_mv 10.1016/S0960-894X(01)00180-9
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subjects Anticonvulsants. Antiepileptics. Antiparkinson agents
Biological and medical sciences
Medical sciences
Neuropharmacology
Pharmacology. Drug treatments
title Synthesis of anticonvulsive AMPA antagonists: 4-Oxo-10-substituted-imidazo[1,2- a]indeno[1,2- e]pyrazin-2-carboxylic acid derivatives
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