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1.
J Org Chem ; 82(19): 10376-10387, 2017 10 06.
Artigo em Inglês | MEDLINE | ID: mdl-28877441

RESUMO

An efficient large-scale synthesis of acid 1, a penultimate precursor to the HCV NS5A inhibitor BMS-986097, along with the final API step are described. Three routes were devised for the synthesis of 1 at the various stages of the program. The third generation route, the one that proved scalable and is the main subject of this paper, features a one-step Michael addition of t-butyl 2-((diphenylmethylene)amino)acetate (24) to (E)-benzyl 4-(1-hydroxycyclopropyl)but-2-enoate (28) followed by cyclization and chiral separation to form 27c, the core skeleton of cap piece 1. The epimerization and chiral resolution of 27c followed by further synthetic manipulations involving the carbamate formation, lactone reduction and cyclization, afforded cyclopropyl pyran 1. A detailed study of diphenylmethane deprotection via acid hydrolysis as well as a key lactone to tetrahydropyran conversion, in order to avoid a side reaction that afforded an alternative cyclization product, are discussed. This synthesis was applied to the preparation of more than 100 g of the final API BMS-986097 for toxicology studies.


Assuntos
Antivirais/síntese química , Glicina/análogos & derivados , Imidazóis/síntese química , Piranos/farmacologia , Pirrolidinas/síntese química , Compostos de Espiro/síntese química , Proteínas não Estruturais Virais/antagonistas & inibidores , Antivirais/química , Antivirais/farmacologia , Imidazóis/química , Imidazóis/farmacologia , Estrutura Molecular , Piranos/síntese química , Piranos/química , Pirrolidinas/química , Pirrolidinas/farmacologia , Compostos de Espiro/química , Compostos de Espiro/farmacologia , Proteínas não Estruturais Virais/metabolismo
2.
ACS Chem Neurosci ; 7(12): 1635-1640, 2016 12 21.
Artigo em Inglês | MEDLINE | ID: mdl-27744678

RESUMO

Combination studies of neurokinin 1 (NK1) receptor antagonists and serotonin-selective reuptake inhibitors (SSRIs) have shown promise in preclinical models of depression. Such a combination may offer important advantages over the current standard of care. Herein we describe the discovery and optimization of an indazole-based chemotype to provide a series of potent dual NK1 receptor antagonists/serotonin transporter (SERT) inhibitors to overcome issues of ion channel blockade. This effort culminated in the identification of compound 9, an analogue that demonstrated favorable oral bioavailability, excellent brain uptake, and robust in vivo efficacy in a validated depression model. Over the course of this work, a novel heterocycle-directed asymmetric hydrogenation was developed to facilitate installation of the key stereogenic center.


Assuntos
Antidepressivos/farmacologia , Indazóis/farmacologia , Antagonistas do Receptor de Neuroquinina-1/farmacologia , Inibidores de Captação de Serotonina/farmacologia , Administração Oral , Animais , Antidepressivos/síntese química , Antidepressivos/química , Antidepressivos/toxicidade , Transtorno Depressivo/tratamento farmacológico , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Descoberta de Drogas , Avaliação Pré-Clínica de Medicamentos , Gerbillinae , Humanos , Indazóis/síntese química , Indazóis/química , Indazóis/toxicidade , Camundongos , Estrutura Molecular , Antagonistas do Receptor de Neuroquinina-1/síntese química , Antagonistas do Receptor de Neuroquinina-1/química , Antagonistas do Receptor de Neuroquinina-1/toxicidade , Ratos , Receptores da Neurocinina-1/metabolismo , Proteínas da Membrana Plasmática de Transporte de Serotonina/metabolismo , Inibidores de Captação de Serotonina/síntese química , Inibidores de Captação de Serotonina/química , Inibidores de Captação de Serotonina/toxicidade , Relação Estrutura-Atividade , Regulador Transcricional ERG/metabolismo
3.
J Med Chem ; 58(19): 7775-84, 2015 Oct 08.
Artigo em Inglês | MEDLINE | ID: mdl-26359680

RESUMO

In search for prodrugs to address the issue of pH-dependent solubility and exposure associated with 1 (BMS-582949), a previously disclosed phase II clinical p38α MAP kinase inhibitor, a structurally novel clinical prodrug, 2 (BMS-751324), featuring a carbamoylmethylene linked promoiety containing hydroxyphenyl acetic acid (HPA) derived ester and phosphate functionalities, was identified. Prodrug 2 was not only stable but also water-soluble under both acidic and neutral conditions. It was effectively bioconverted into parent drug 1 in vivo by alkaline phosphatase and esterase in a stepwise manner, providing higher exposure of 1 compared to its direct administration, especially within higher dose ranges. In a rat LPS-induced TNFα pharmacodynamic model and a rat adjuvant arthritis model, 2 demonstrated similar efficacy to 1. Most importantly, it was shown in clinical studies that prodrug 2 was indeed effective in addressing the pH-dependent absorption issue associated with 1.


Assuntos
Organofosfatos/farmacologia , Fenilacetatos/farmacologia , Pró-Fármacos/química , Pró-Fármacos/farmacologia , Inibidores de Proteínas Quinases/farmacologia , Administração Oral , Animais , Artrite Experimental/tratamento farmacológico , Disponibilidade Biológica , Técnicas de Química Sintética , Relação Dose-Resposta a Droga , Avaliação Pré-Clínica de Medicamentos/métodos , Macaca fascicularis , Masculino , Proteína Quinase 14 Ativada por Mitógeno/antagonistas & inibidores , Estrutura Molecular , Organofosfatos/química , Fenilacetatos/química , Pró-Fármacos/farmacocinética , Inibidores de Proteínas Quinases/química , Ratos Endogâmicos Lew , Ratos Sprague-Dawley , Solubilidade , Relação Estrutura-Atividade
4.
ACS Med Chem Lett ; 6(8): 850-5, 2015 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-26288683

RESUMO

JAK2 kinase inhibitors are a promising new class of agents for the treatment of myeloproliferative neoplasms and have potential for the treatment of other diseases possessing a deregulated JAK2-STAT pathway. X-ray structure and ADME guided refinement of C-4 heterocycles to address metabolic liability present in dialkylthiazole 1 led to the discovery of a clinical candidate, BMS-911543 (11), with excellent kinome selectivity, in vivo PD activity, and safety profile.

5.
J Med Chem ; 57(5): 1855-79, 2014 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-24397558

RESUMO

Described herein are structure-activity relationship studies that resulted in the optimization of the activity of members of a class of cyclopropyl-fused indolobenzazepine HCV NS5B polymerase inhibitors. Subsequent iterations of analogue design and syntheses successfully addressed off-target activities, most notably human pregnane X receptor (hPXR) transactivation, and led to significant improvements in the physicochemical properties of lead compounds. Those analogues exhibiting improved solubility and membrane permeability were shown to have notably enhanced pharmacokinetic profiles. Additionally, a series of alkyl bridged piperazine carboxamides was identified as being of particular interest, and from which the compound BMS-791325 (2) was found to have distinguishing antiviral, safety, and pharmacokinetic properties that resulted in its selection for clinical evaluation.


Assuntos
Antivirais/farmacologia , Benzazepinas/farmacologia , Inibidores Enzimáticos/farmacologia , Indóis/farmacologia , Proteínas não Estruturais Virais/antagonistas & inibidores , Regulação Alostérica , Animais , Antivirais/química , Antivirais/farmacocinética , Benzazepinas/química , Benzazepinas/farmacocinética , Cães , Descoberta de Drogas , Inibidores Enzimáticos/química , Inibidores Enzimáticos/farmacocinética , Humanos , Indóis/química , Indóis/farmacocinética , Espectroscopia de Ressonância Magnética , Espectrometria de Massas , Modelos Moleculares , Ratos , Relação Estrutura-Atividade
6.
J Med Chem ; 48(6): 1729-44, 2005 Mar 24.
Artigo em Inglês | MEDLINE | ID: mdl-15771420

RESUMO

Modification of a series of pyrazole factor Xa inhibitors to incorporate an aminobenzisoxazole as the P(1) ligand resulted in compounds with improved selectivity for factor Xa relative to trypsin and plasma kallikrein. Further optimization of the P(4) moiety led to compounds with enhanced permeability and reduced protein binding. The SAR and pharmacokinetic profile of this series of compounds is described herein. These efforts culminated in 1-(3'-aminobenzisoxazol-5'-yl)-3-trifluoromethyl-N-[2-fluoro-4-[(2'-dimethylaminomethyl)imidazol-1-yl]phenyl]-1H-pyrazole-5-carboxyamide (11d), a potent, selective, and orally bioavailable inhibitor of factor Xa. On the basis of its excellent in vitro potency and selectivity profile, high free fraction in human plasma, good oral bioavailability, and in vivo efficacy in antithrombotic models, the HCl salt of this compound was selected for clinical development as razaxaban (DPC 906, BMS-561389).


Assuntos
Inibidores do Fator Xa , Fibrinolíticos/síntese química , Imidazóis/síntese química , Isoxazóis/síntese química , Pirazóis/síntese química , Administração Oral , Animais , Disponibilidade Biológica , Proteínas Sanguíneas/metabolismo , Células CACO-2 , Cristalografia por Raios X , Cães , Fibrinolíticos/química , Fibrinolíticos/farmacologia , Humanos , Imidazóis/química , Imidazóis/farmacologia , Isoxazóis/química , Isoxazóis/farmacologia , Modelos Moleculares , Permeabilidade , Ligação Proteica , Pirazóis/química , Pirazóis/farmacologia , Coelhos , Relação Estrutura-Atividade , Trombose/prevenção & controle
7.
Bioorg Med Chem Lett ; 14(6): 1483-6, 2004 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-15006386

RESUMO

Employing phenylmalonitrile dianion chemistry, a large number of analogues of MEK inhibitor lead SH053 (IC(50)=140 nM) were rapidly synthesized leading to single digit nM inhibitors, displaying submicromolar AP-1 transcription inhibition in COS-7 cells. Compound 41, exhibiting a MEK IC(50)=12 nM showed ip activity in a TPA-induced ear edema model with an ED(50)=5 mg/kg.


Assuntos
Butadienos/síntese química , Química Farmacêutica/métodos , Inibidores Enzimáticos/síntese química , Quinases de Proteína Quinase Ativadas por Mitógeno/antagonistas & inibidores , Nitrilos/síntese química , Animais , Células COS , Cercopithecus aethiops , Quinases de Proteína Quinase Ativadas por Mitógeno/metabolismo , Relação Estrutura-Atividade
8.
Bioorg Med Chem Lett ; 13(1): 125-8, 2003 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-12467631

RESUMO

A series of high affinity CRF receptor ligands with an imidazo[4,5-b]pyridine core is described. Individual analogues were synthesized and tested in a rat CRF receptor binding assay. The best compounds were further tested in the dog N-in-1 pharmacokinetic model to assess plasma levels at 1mg/kg (po) and in the rat situational anxiety model to assess anxiolytic efficacy at 3mg/kg (po). The structure-activity relationships for good receptor binding affinity are described herein.


Assuntos
Ansiolíticos/farmacologia , Piridinas/farmacologia , Receptores de Hormônio Liberador da Corticotropina/metabolismo , Animais , Ansiolíticos/síntese química , Ansiolíticos/metabolismo , Transtornos de Ansiedade/tratamento farmacológico , Cães , Meia-Vida , Ligantes , Taxa de Depuração Metabólica , Piridinas/síntese química , Piridinas/metabolismo , Ratos , Receptores de Hormônio Liberador da Corticotropina/antagonistas & inibidores , Relação Estrutura-Atividade
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