RESUMO
Pursuing our efforts in designing 5-pyrimidylhydroxamic acid anti-cancer agents, we have identified a new series of potent histone deacetylase (HDAC) inhibitors. These compounds exhibit enzymatic HDAC inhibiting properties with IC(50) values in the nanomolar range and inhibit tumor cell proliferation at similar levels. Good solubility, moderate bioavailability, and promising in vivo activity in xenograft model made this series of compounds interesting starting points to design new potent HDAC inhibitors.
Assuntos
Antineoplásicos/química , Inibidores de Histona Desacetilases/química , Histona Desacetilases/química , Ácidos Hidroxâmicos/química , Animais , Antineoplásicos/síntese química , Antineoplásicos/farmacologia , Linhagem Celular Tumoral , Proliferação de Células , Desenho de Fármacos , Inibidores de Histona Desacetilases/síntese química , Inibidores de Histona Desacetilases/farmacologia , Histona Desacetilases/metabolismo , Ácidos Hidroxâmicos/síntese química , Ácidos Hidroxâmicos/farmacologia , Camundongos , Camundongos Nus , Ratos , Ratos Sprague-Dawley , Relação Estrutura-Atividade , Ensaios Antitumorais Modelo de XenoenxertoRESUMO
R207910 is an enantiomeric compound from a new class of antimycobacterial agents, the diarylquinolines [Science; 307:223 (2005)]. As enantiospecific interaction is required for biologic activity, we have undertaken a combined nuclear magnetic resonance and molecular modeling study to gain new insights into its conformation in solution and its absolute configuration. A conformational analysis using a Monte-Carlo method has been performed on each of the four possible stereomers of this compound leading to the identification of their most stable conformation. Additional ab initio calculation was performed with emphasis on the strength of the observed intramolecular hydrogen bond. Simultaneously, a complete structural identification has been carried out by a set of monodimensional and bidimensional (1)H-(13)C-NMR experiments. Determination of inter-proton distances has been achieved by a series of (1)H-(1)H ROESY NMR experiments with different mixing times followed by a volume quantification of the correlations peaks. These experimental data were compared with the theoretical distances obtained from the conformational analysis. The remarkable match shows that R207910 adopts one of the low-energy conformations predicted by molecular modeling and belongs to the (RS, SR) couple of diastereoisomers. A posteriori validation of our approach has been performed by X-ray structure determination that concluded for the RS configuration.
Assuntos
Antituberculosos/química , Espectroscopia de Ressonância Magnética/métodos , Modelos Moleculares , Quinolinas/química , Cristalografia por Raios X , Diarilquinolinas , Ligação de Hidrogênio , Conformação MolecularRESUMO
A series of pyrimidyl-5-hydroxamic acids was prepared for evaluation as inhibitors of histone deacetylase (HDAC). Amino-2-pyrimidinyl can be used as a linker to provide HDAC inhibitors of good enzymatic potency.
Assuntos
Inibidores Enzimáticos/síntese química , Inibidores de Histona Desacetilases , Ácidos Hidroxâmicos/síntese química , Ácidos Hidroxâmicos/farmacologia , Pirimidinas/síntese química , Pirimidinas/farmacologia , Proliferação de Células/efeitos dos fármacos , Inibidores Enzimáticos/química , Inibidores Enzimáticos/farmacologia , Feminino , Células HeLa , Humanos , Ácidos Hidroxâmicos/química , Concentração Inibidora 50 , Espectroscopia de Ressonância Magnética , Estrutura Molecular , Pirimidinas/química , Espectrometria de Massas por Ionização por ElectrosprayRESUMO
This paper reports the synthesis and the antiviral properties of new diarylpyrimidine (DAPY) compounds as nonnucleoside reverse transcriptase inhibitors (NNRTIs). The synthesis program around this new DAPY series was further optimized to produce compounds displaying improved activity against a panel of eight clinically relevant single and double mutant strains of human immunodeficiency virus type 1 (HIV-1).
