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1.
J Med Chem ; 54(18): 6342-63, 2011 Sep 22.
Artigo em Inglês | MEDLINE | ID: mdl-21812414

RESUMO

Because of the critical roles of aberrant signaling in cancer, both c-MET and ALK receptor tyrosine kinases are attractive oncology targets for therapeutic intervention. The cocrystal structure of 3 (PHA-665752), bound to c-MET kinase domain, revealed a novel ATP site environment, which served as the target to guide parallel, multiattribute drug design. A novel 2-amino-5-aryl-3-benzyloxypyridine series was created to more effectively make the key interactions achieved with 3. In the novel series, the 2-aminopyridine core allowed a 3-benzyloxy group to reach into the same pocket as the 2,6-dichlorophenyl group of 3 via a more direct vector and thus with a better ligand efficiency (LE). Further optimization of the lead series generated the clinical candidate crizotinib (PF-02341066), which demonstrated potent in vitro and in vivo c-MET kinase and ALK inhibition, effective tumor growth inhibition, and good pharmaceutical properties.


Assuntos
Proteínas Proto-Oncogênicas c-met/antagonistas & inibidores , Pirazóis/síntese química , Piridinas/síntese química , Receptores Proteína Tirosina Quinases/antagonistas & inibidores , Quinase do Linfoma Anaplásico , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Crizotinibe , Cristalografia por Raios X , Desenho de Fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Transição Epitelial-Mesenquimal , Humanos , Indóis/síntese química , Indóis/química , Indóis/farmacologia , Modelos Moleculares , Conformação Molecular , Pirazóis/química , Pirazóis/farmacologia , Piridinas/química , Piridinas/farmacologia , Estereoisomerismo , Relação Estrutura-Atividade
3.
Bioorg Med Chem Lett ; 18(23): 6273-8, 2008 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-18929486

RESUMO

Information from X-ray crystal structures were used to optimize the potency of a HTS hit in a Hsp90 competitive binding assay. A class of novel and potent small molecule Hsp90 inhibitors were thereby identified. Enantio-pure compounds 31 and 33 were potent in PGA-based competitive binding assay and inhibited proliferation of various human cancer cell lines in vitro, with IC(50) values averaging 20 nM.


Assuntos
Amidas/síntese química , Amidas/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/farmacologia , Proteínas de Choque Térmico HSP90/antagonistas & inibidores , Amidas/química , Aminoácidos/química , Antineoplásicos/química , Técnicas de Química Combinatória , Cristalografia por Raios X , Desenho de Fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Chaperonas Moleculares/metabolismo , Conformação Molecular , Estrutura Molecular , Relação Estrutura-Atividade
4.
Eur J Med Chem ; 43(6): 1321-9, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17964000

RESUMO

A series of quinoline-containing c-Met inhibitors were prepared and studied. Chemistry was developed to introduce a pyridyl moiety onto the 2-aryl ring present in a lead molecule which mitigated the potential for quinone formation relative to the original compound. The study also assessed the importance of an acylthiourea moiety present in the lead structure for effective binding to the c-Met protein ATP site.


Assuntos
Inibidores de Proteínas Quinases/química , Inibidores de Proteínas Quinases/farmacologia , Proteínas Proto-Oncogênicas c-met/antagonistas & inibidores , Quinolinas/farmacologia , Espectroscopia de Ressonância Magnética , Espectrometria de Massas , Relação Estrutura-Atividade
5.
Bioorg Med Chem Lett ; 15(11): 2812-8, 2005 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-15911260

RESUMO

A novel series of non-nucleoside HCV NS5B polymerase inhibitors was prepared from a (2Z)-2-benzoylamino-3-(4-phenoxy-phenyl)-acrylic acid template. Solution and solid phase analog synthesis focused on the northern region of the template combined with structure based design led to the discovery of several potent and orally bioavailable lead compounds.


Assuntos
Acrilatos/química , Acrilatos/farmacologia , Inibidores Enzimáticos/química , Inibidores Enzimáticos/farmacologia , RNA Polimerase Dependente de RNA/antagonistas & inibidores , Proteínas não Estruturais Virais/antagonistas & inibidores
6.
J Org Chem ; 67(26): 9414-6, 2002 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-12492346

RESUMO

Potassium tert-butoxide triggers the chemoselective cyclization between nitrile anions and remote, enolizable carbonyl groups, despite the acidity difference favoring enolate formation and addition to the nitrile group. Domino deprotonation, cyclization, and dehydration efficiently transform a diverse array of omega-oxonitriles into carbocyclic and heterocyclic five- and six-membered alkenenitriles in a single synthetic operation.

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