RESUMO
The discovery and SAR of a series of potent renin inhibitors possessing a novel 3,4-diarylpiperidine scaffold are described herein. The resulting compound 38 exhibit low nanomolar plasma renin IC(50), had a clean CYP 3A4 profile and displayed micromolar affinity for the hERG channel. Furthermore, it was found to be efficacious in the double transgenic rat hypertension model and show good to moderate oral bioavailability in two animal species.
Assuntos
Anti-Hipertensivos/química , Anti-Hipertensivos/uso terapêutico , Hipertensão/tratamento farmacológico , Piperidinas/química , Piperidinas/uso terapêutico , Renina/antagonistas & inibidores , Animais , Anti-Hipertensivos/farmacocinética , Anti-Hipertensivos/farmacologia , Disponibilidade Biológica , Citocromo P-450 CYP3A/metabolismo , Inibidores do Citocromo P-450 CYP3A , Cães , Canais de Potássio Éter-A-Go-Go/metabolismo , Humanos , Piperidinas/farmacocinética , Piperidinas/farmacologia , Ratos , Ratos Sprague-Dawley , Ratos Transgênicos , Renina/metabolismo , Relação Estrutura-AtividadeRESUMO
Time-dependent inhibitors of CYPs have the potential to perpetrate drug-drug interactions in the clinical setting. After finding that several leading compounds in a novel series of substituted amino propanamide renin inhibitors inactivated CYP3A4 in an NADPH-dependent and time-dependent manner, a search to identify the cause of this liability was initiated. Extensive SAR revealed that the amide bridge present in compound 1 as a possible culprit. Through the installation of a metabolic soft spot distal to this moiety, potent renin inhibitors with improved CYP profile were identified.
Assuntos
Inibidores do Citocromo P-450 CYP3A , Inibidores Enzimáticos/farmacologia , Propionatos/química , Renina/antagonistas & inibidores , Amidas/química , Citocromo P-450 CYP3A , Inibidores Enzimáticos/química , Inibidores Enzimáticos/farmacocinética , Humanos , Concentração Inibidora 50 , Microssomos Hepáticos/efeitos dos fármacos , Microssomos Hepáticos/enzimologiaRESUMO
The discovery and SAR of a series of potent renin inhibitors possessing a novel biaryl scaffold are described herein. Molecular modeling revealed that the cyclopropylamide spacer present in 1 can be replaced by a simple, substituted aromatic ring such as a toluene in 2. The resulting compounds exhibit subnanomolar renin IC(50) and good oral bioavailability in rats.
Assuntos
Bibenzilas/química , Inibidores Enzimáticos/química , Renina/antagonistas & inibidores , Administração Oral , Amidas/química , Animais , Bibenzilas/síntese química , Bibenzilas/farmacocinética , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/farmacocinética , Ratos , Renina/metabolismo , Relação Estrutura-AtividadeRESUMO
The discovery and SAR of a new series of substituted amino propanamide renin inhibitors are herein described. This work has led to the preparation of compounds with in vitro and in vivo profiles suitable for further development. Specifically, challenges pertaining to oral bioavailability, covalent binding and time-dependent CYP 3A4 inhibition were overcome thereby culminating in the identification of compound 50 as an optimized renin inhibitor with good efficacy in the hypertensive double-transgenic rat model.