RESUMO
Modification of the pyrimidone 5-substituent in clinical candidate SB-435495 has given a series of inhibitors of recombinant lipoprotein-associated phospholipase A(2) with sub-nanomolar potency. Cyclopentyl fused derivative 21, SB-480848, showed an enhanced in vitro and in vivo profile versus SB-435495 and has been selected for progression to man.
Assuntos
Inibidores Enzimáticos/farmacologia , Fosfolipases A/antagonistas & inibidores , Pirimidinonas/farmacologia , 1-Alquil-2-acetilglicerofosfocolina Esterase , Animais , Inibidores do Citocromo P-450 CYP2D6 , Inibidores Enzimáticos/química , Humanos , Técnicas In Vitro , Cinética , Fosfolipases A/sangue , Fosfolipases A2 , Pirimidinonas/química , Coelhos , Proteínas Recombinantes/antagonistas & inibidoresRESUMO
A series of 1-(biphenylmethylamidoalkyl)-pyrimidones has been designed as nanomolar inhibitors of recombinant lipoprotein-associated phospholipase A(2) with high potency in whole human plasma. 5-(Pyrazolylmethyl) derivative 16 and 5-(methoxypyrimidinylmethyl) derivative 27 demonstrated excellent pharmacodynamic profiles which correlated well with their pharmacokinetic effects.
Assuntos
Fosfolipases A/antagonistas & inibidores , Pirimidinonas/farmacocinética , 1-Alquil-2-acetilglicerofosfocolina Esterase , Administração Oral , Animais , Desenho de Fármacos , Avaliação Pré-Clínica de Medicamentos , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/química , Inibidores Enzimáticos/farmacocinética , Humanos , Concentração Inibidora 50 , Cinética , Pirimidinonas/síntese química , Pirimidinonas/química , Coelhos , Relação Estrutura-AtividadeRESUMO
The introduction of a functionalised amido substituent into a series of 1-(biphenylmethylacetamido)-pyrimidones has given a series of inhibitors of recombinant lipoprotein-associated phospholipase A(2) with sub-nanomolar potency and very encouraging developability properties. Diethylaminoethyl derivative 32, SB-435495, was selected for progression to man.