RESUMO
Efforts were dedicated to develop potent and brain penetrant prolylcarboxypeptidase (PrCP) inhibitors by replacing the amide group of original leads 1 and 2 with heterocycles. Aminopyrimidines including compound 32a were identified to display good PrCP inhibitory activity (32a, IC(50)=43 nM) and impressive ability to penetrate brain in mice (brain/plasma ratio: 1.4).
Assuntos
Aminas/síntese química , Encéfalo/efeitos dos fármacos , Carboxipeptidases/antagonistas & inibidores , Descoberta de Drogas , Inibidores Enzimáticos , Compostos Heterocíclicos/síntese química , Compostos Heterocíclicos/farmacologia , Amidas/química , Aminas/química , Aminas/farmacologia , Animais , Encéfalo/enzimologia , Ativação Enzimática/efeitos dos fármacos , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/farmacologia , Compostos Heterocíclicos/química , Concentração Inibidora 50 , Camundongos , Estrutura Molecular , Relação Estrutura-AtividadeRESUMO
A series of benzodihydroisofurans were discovered as novel, potent, bioavailable and brain-penetrant prolylcarboxypeptidase (PrCP) inhibitors. The structure-activity relationship (SAR) is focused on improving PrCP activity and metabolic stability, and reducing plasma protein binding. In the established diet-induced obese (eDIO) mouse model, compound ent-3a displayed target engagement both in plasma and in brain. However, this compound failed to induce significant body weight loss in eDIO mice in a five-day study.
Assuntos
Carboxipeptidases/antagonistas & inibidores , Descoberta de Drogas , Inibidores Enzimáticos/farmacologia , Furanos/química , Furanos/farmacologia , Animais , Células Cultivadas , Modelos Animais de Doenças , Estabilidade de Medicamentos , Ativação Enzimática/efeitos dos fármacos , Furanos/síntese química , Humanos , Camundongos , Camundongos Obesos , Estrutura Molecular , Relação Estrutura-AtividadeRESUMO
Efforts to modify the central proline portion of lead compound 4 lead to the discovery of novel prolylcarboxypeptidase (PrCP) inhibitors. Especially, replacement with alanine afforded compound 19 displaying more potent human and mouse PrCP inhibitory activity than 4 and an overall comparable profile.
