RESUMO
Thiourea derivatives having benzimidazole 1-17 have been synthesized, characterized by 1H NMR, 13C NMR and EI-MS and evaluated for α-glucosidase inhibition. Identification of potential α-glucosidase inhibitors were done by in vitro screening of 17 thiourea bearing benzimidazole derivatives using Baker's yeast α-glucosidase enzyme. Compounds 1-17 exhibited a varying degree of α-glucosidase inhibitory activity with IC50 values between 35.83±0.66 and 297.99±1.20µM which are more better than the standard acarbose (IC50=774.5±1.94µM). Compound 10 and 14 showed significant inhibitory effects with IC50 value 50.57±0.81 and 35.83±0.66µM, respectively better than the rest of the series. Structure activity relationships were established. Molecular docking studies were performed to understand the binding interaction of the compounds.
Assuntos
Benzimidazóis/química , Benzimidazóis/farmacologia , Inibidores de Glicosídeo Hidrolases/química , Inibidores de Glicosídeo Hidrolases/farmacologia , Saccharomyces cerevisiae/enzimologia , Tioureia/análogos & derivados , Tioureia/farmacologia , Benzimidazóis/síntese química , Inibidores de Glicosídeo Hidrolases/síntese química , Simulação de Acoplamento Molecular , Saccharomyces cerevisiae/efeitos dos fármacos , Tioureia/síntese químicaRESUMO
Newly synthesized benzimidazole hydrazone derivatives 1-26 were evaluated for their α-glucosidase inhibitory activity. Compounds 1-26 exhibited varying degrees of yeast α-glucosidase inhibitory activity with IC50 values between 8.40 ± 0.76 and 179.71 ± 1.11 µM when compared with standard acarbose. In this assay, seven compounds that showed highest inhibitory effects than the rest of benzimidazole series were identified. All the synthesized compounds were characterized by different spectroscopic methods adequately. We further evaluated the interaction of the active compounds with enzyme with the help of docking studies.
Assuntos
Benzimidazóis/química , Inibidores de Glicosídeo Hidrolases/química , Hidrazonas/química , Saccharomyces cerevisiae/enzimologia , alfa-Glucosidases/química , Acarbose/química , Benzimidazóis/síntese química , Inibidores de Glicosídeo Hidrolases/síntese química , Hidrazonas/síntese química , Simulação de Acoplamento Molecular , Estereoisomerismo , Relação Estrutura-AtividadeRESUMO
Apoptotic cell death is the cause of the loss of insulin-producing ß-cells in all forms of diabetes mellitus. The identification of small molecules capable of protecting cytokine-induced apoptosis could form the basis of useful therapeutic interventions. Here in, we present the discovery and synthesis of new benzimidazole derivatives, capable of rescuing pancreatic ß-cells from cytokine-induced apoptosis. Three hydrazone derivatives of benzimidazole significantly increased the cellular ATP levels, reduced caspase-3 activity, reduced nitrite production and increased glucose-stimulated insulin secretion in the presence of proinflammatory cytokines. These findings suggest that these compounds may protect ß-cells from the harmful effects of cytokines and may serve as candidates for therapeutic intervention for diabetes.
Assuntos
Apoptose/efeitos dos fármacos , Benzimidazóis/química , Benzimidazóis/farmacologia , Citocinas/metabolismo , Células Secretoras de Insulina/efeitos dos fármacos , Substâncias Protetoras/farmacologia , Animais , Benzimidazóis/síntese química , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Células Secretoras de Insulina/citologia , Células Secretoras de Insulina/patologia , Estrutura Molecular , Substâncias Protetoras/síntese química , Substâncias Protetoras/química , Ratos , Relação Estrutura-AtividadeRESUMO
A library of novel 2,5-disubtituted-1,3,4-oxadiazoles with benzimidazole backbone (3a-3r) was synthesized and evaluated for their potential as ß-glucuronidase inhibitors. Several compounds such as 3a-3d, 3e-3j, 3l-3o, 3q and 3r showed excellent inhibitory potentials much better than the standard (IC50=48.4±1.25µM: d-saccharic acid 1,4-lactone). All the synthesized compounds were characterized satisfactorily by using different spectroscopic methods. We further evaluated the interaction of the active compounds and the enzyme active site with the help of docking studies.
Assuntos
Benzimidazóis/síntese química , Inibidores Enzimáticos/síntese química , Glucuronidase/antagonistas & inibidores , Oxidiazóis/síntese química , Benzimidazóis/química , Domínio Catalítico , Inibidores Enzimáticos/química , Glucuronidase/química , Humanos , Simulação de Acoplamento Molecular , Oxidiazóis/química , Ligação Proteica , Relação Estrutura-AtividadeRESUMO
Biscoumarin analogs 1-18 have been synthesized, characterized by EI-MS and (1)H NMR and evaluated for α-glucosidase inhibitory potential. All compounds showed variety of α-glucosidase inhibitory potential ranging in between 13.5±0.39 and 104.62±0.3µM when compared with standard acarbose having IC50 value 774.5±1.94µM. The binding interactions of the most active analogs were confirmed through molecular docking. The compounds showed very good interactions with enzyme. All synthesized compounds 1-18 are new. Our synthesized compounds can further be studied to developed lead compounds.