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1.
Bioorg Med Chem Lett ; 29(7): 873-877, 2019 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-30755337

RESUMO

Optimization of novel azetidine compounds, which we had found as colony stimulating factor-1 receptor (CSF-1R) Type II inhibitors, provided JTE-952 as a clinical candidate with high cellular activity (IC50 = 20 nM) and good pharmacokinetics profile. JTE-952 was also effective against a mouse collagen-induced model of arthritis (mouse CIA-model). Additionally, the X-ray co-crystal structure of JTE-952 with CSF-1R protein was shown to be a Type II inhibitor, and the kinase panel assay indicated that JTE-952 had high kinase selectivity.


Assuntos
Artrite Experimental/tratamento farmacológico , Azetidinas/química , Receptores de Fator Estimulador das Colônias de Granulócitos e Macrófagos/antagonistas & inibidores , Animais , Azetidinas/farmacologia , Colágeno/toxicidade , Regulação da Expressão Gênica/efeitos dos fármacos , Humanos , Camundongos , Modelos Moleculares , Estrutura Molecular , Inibidores de Proteínas Quinases/farmacologia
2.
Bioorg Med Chem Lett ; 29(1): 115-118, 2019 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-30442420

RESUMO

We report the discovery of a novel azetidine scaffold for colony stimulating factor-1 receptor (CSF-1R) Type II inhibitors by using a structure-based drug design (SBDD) based on a docking model. The work leads to the representative compound 4a with high CSF-1R inhibitory activity (IC50 = 9.1 nM). The obtained crystal structure of an azetidine compound with CSF-1R, which matched our predicted docking model, demonstrates that the azetidine compounds bind to the DFG-out conformation of the protein as a Type II inhibitor.


Assuntos
Azetidinas/farmacologia , Descoberta de Drogas , Receptores de Fator Estimulador das Colônias de Granulócitos e Macrófagos/antagonistas & inibidores , Azetidinas/síntese química , Azetidinas/química , Relação Dose-Resposta a Droga , Humanos , Simulação de Acoplamento Molecular , Estrutura Molecular , Receptores de Fator Estimulador das Colônias de Granulócitos e Macrófagos/metabolismo , Relação Estrutura-Atividade
3.
J Med Chem ; 62(5): 2837-2842, 2019 03 14.
Artigo em Inglês | MEDLINE | ID: mdl-30776227

RESUMO

Starting from a previously reported RORγ inhibitor (1), successive efforts to improve in vivo potency were continued. Introduction of metabolically beneficial motifs in conjunction with scaffold hopping was examined, resulting in discovery of the second generation RORγ inhibitor composed of a 4-(isoxazol-3-yl)butanoic acid scaffold (24). Compound 24 achieved a 10-fold improvement in in vivo potency in a mouse CD3 challenge model along with significant anti-inflammatory effects in a mouse dermatitis model.


Assuntos
Azóis/farmacologia , Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/antagonistas & inibidores , Animais , Azóis/química , Dermatite/tratamento farmacológico , Modelos Animais de Doenças , Descoberta de Drogas , Camundongos , Simulação de Acoplamento Molecular , Relação Estrutura-Atividade
4.
ACS Med Chem Lett ; 2(3): 238-42, 2011 Mar 10.
Artigo em Inglês | MEDLINE | ID: mdl-24900301

RESUMO

Short-acting oral calcilytics, calcium-sensing receptor (CaSR) antagonists, have been considered as alternatives for parathyroid hormone (PTH), an injectable bone anabolic drug used in the treatment of osteoporosis. Previously, we identified aminopropandiol 1, which transiently stimulated endogenous PTH secretion in rats. However, the inhibition of cytochrome P450 (CYP) 2D6 and the low bioavailability of 1 remain to be solved. Attempts to change the physicochemical properties of the highly lipophilic amine 1 by introduction of a carboxylic acid group as well as further structural modifications led to the discovery of the highly potent biphenylcarboxylic acid 15, with a markedly reduced CYP2D6 inhibition and a significantly improved bioavailability. Compound 15 evoked a rapid and transient elevation of endogenous PTH levels in rats after oral administration in a dose-dependent manner at a dose as low as 1 mg/kg. The PTH secretion pattern correlated with the pharmacokinetic profile and agreed well with that of the exogenous PTH injection which exerts a bone anabolic effect.

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