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1.
Bioorg Med Chem Lett ; 22(10): 3560-3, 2012 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-22503248

RESUMO

A series of α7 nicotinic acetylcholine receptor full-agonists with a 1,3,4-oxadiazol-2-amine core has been discovered. Systematic exploration of the structure-activity relationships for both α7 potency and selectivity with respect to interaction with the hERG channel are described. Further profiling led to the identification of compound 22, a potent full agonist showing efficacy in the novel object recognition model of cognition enhancement.


Assuntos
Cognição/efeitos dos fármacos , Agonistas Nicotínicos/farmacologia , Receptores Nicotínicos/efeitos dos fármacos , Animais , Cães , Agonistas Nicotínicos/química , Receptor Nicotínico de Acetilcolina alfa7
2.
Bioorg Med Chem Lett ; 22(10): 3531-4, 2012 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-22503453

RESUMO

A series of α7 nicotinic acetylcholine receptor full agonists with a 1,3,4-oxadiazol-2-amine core has been discovered. Early lead 1 was found to have a limited therapeutic index with respect to its potential for cardiovascular side effects. Further optimisation of this series led to the identification of 22 a potent full agonist showing efficacy at a dose of 0.1mg/kg in the novel object recognition model of cognition enhancement. Comparison of 1 with 22 demonstrated the latter to have an improved oral pharmacokinetic profile and cardiovascular therapeutic index.


Assuntos
Cognição/efeitos dos fármacos , Agonistas Nicotínicos/farmacologia , Receptores Nicotínicos/efeitos dos fármacos , Animais , Relação Dose-Resposta a Droga , Coelhos , Receptores Nicotínicos/química , Receptor Nicotínico de Acetilcolina alfa7
9.
Bioorg Med Chem Lett ; 13(9): 1581-4, 2003 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-12699760

RESUMO

Introduction of a nitrogen atom into the 6-position of a series of pyrazolo[3,4-b]pyridines led to a dramatic improvement in the potency of GSK-3 inhibition. Rationalisation of the binding mode suggested participation of a putative structural water molecule, which was subsequently confirmed by X-ray crystallography.


Assuntos
Quinase 3 da Glicogênio Sintase/antagonistas & inibidores , Pirazóis/síntese química , Piridazinas/síntese química , Modelos Moleculares , Pirazóis/química , Piridazinas/química , Relação Estrutura-Atividade
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