RESUMO
A series of substituted benzofuropyrimidinones with pan-PIM activities and excellent selectivity against a panel of diverse kinases is described. Initial exploration identified aryl benzofuropyrimidinones that were potent, but had cell permeability limitation. Using X-ray crystal structures of the bound PIM-1 complexes with 3, 5m, and 6d, we were able to guide the SAR and identify the alkyl benzofuropyrimidinone (6l) with good PIM potencies, permeability, and oral exposure.
Assuntos
Desenho de Fármacos , Furanos/química , Inibidores de Proteínas Quinases/síntese química , Proteínas Proto-Oncogênicas c-pim-1/antagonistas & inibidores , Pirimidinonas/química , Sítios de Ligação , Simulação por Computador , Cristalografia por Raios X , Inibidores de Proteínas Quinases/química , Inibidores de Proteínas Quinases/farmacologia , Estrutura Terciária de Proteína , Proteínas Proto-Oncogênicas c-pim-1/metabolismo , Pirimidinonas/síntese química , Pirimidinonas/farmacologia , Relação Estrutura-AtividadeRESUMO
Variously substituted indolin-2-ones were synthesized and evaluated for activity against KDR, Flt-1, FGFR-1 and PDGFR. Extension at the 5-position of the oxindole ring with ethyl piperidine (compound 7i) proved to be the most beneficial for attaining both biochemical and cellular potencies. Further optimization of 7i to balance biochemical and cellular potencies with favorable ADME/ PK properties led to the identification of 8h, a compound with a clean CYP profile, acceptable pharmacokinetic and toxicity profiles, and robust efficacy in multiple xenograft tumor models.
Assuntos
Desenho de Fármacos , Indóis/síntese química , Piperidinas/síntese química , Inibidores de Proteínas Quinases/síntese química , Receptores Proteína Tirosina Quinases/antagonistas & inibidores , Animais , Sítios de Ligação , Linhagem Celular Tumoral , Cristalografia por Raios X , Citocromo P-450 CYP3A/metabolismo , Feminino , Meia-Vida , Humanos , Indóis/farmacocinética , Indóis/uso terapêutico , Pulmão/efeitos dos fármacos , Pulmão/metabolismo , Camundongos , Neoplasias/tratamento farmacológico , Piperidinas/farmacocinética , Piperidinas/uso terapêutico , Inibidores de Proteínas Quinases/farmacocinética , Inibidores de Proteínas Quinases/uso terapêutico , Estrutura Terciária de Proteína , Ratos , Receptores Proteína Tirosina Quinases/metabolismo , Relação Estrutura-Atividade , Transplante HeterólogoRESUMO
CDC7 is a serine/threonine kinase that has been shown to be required for the initiation and maintenance of DNA replication. Up-regulation of CDC7 is detected in multiple tumor cell lines, with inhibition of CDC7 resulting in cell cycle arrest. In this paper, we disclose the discovery of a potent and selective CDC7 inhibitor, XL413 (14), which was advanced into Phase 1 clinical trials. Starting from advanced lead 3, described in a preceding communication, we optimized the CDC7 potency and selectivity to demonstrate in vitro CDC7 dependent cell cycle arrest and in vivo tumor growth inhibition in a Colo-205 xenograft model.