We report here the synthesis and mechanism of inhibition of pyrazolecarboxamide derivatives as a new class of HCV inhibitors. Compounds 6, 7, 8 and 16 inhibited the subgenomic HCV replicon 1b genotype at EC50 values between 5 and 8 μM and displayed an even higher potency against the infectious Jc1 HCV 2a genotype. Compound 6 exhibited an EC50 of 6.7 μM and selectivity index of 23 against HCV 1b, and reduced the RNA copies of the infectious Jc1 chimeric 2a clone by 82% at 7 μM. Evaluation of the mode of anti-HCV activity of 6 revealed that it suppressed HCV-induced COX-2 mRNA and protein expression, displaying an IC50 of 3.2 μM in COX-2 promoter-linked luciferase reporter assay. Conversely, the anti-HCV activity of 6 was abrogated upon over-expression of COX-2. These findings suggest that 6 as a representative of these pyrazolecarboxamides function as anti-HCV agents via targeting COX-2 at both the transcription and translation levels.
New 1-phenyl-5-(1 H -pyrrol-1-yl)-1 H -pyrazole-3-carboxamides inhibit hepatitis C virus replication via suppression of cyclooxygenase-2 / Manvar, D., Pelliccia, S., La Regina, G., Famiglini, V., Coluccia, A., Ruggieri, A., Anticoli, S., Lee, J.-C., Basu, A., Cevik, O., Nencioni, L., Palamara, A.T., Zamperini, C., Botta, M., Neyts, J., Leyssen, P., Kaushik-Basu, N., Silvestri, R.. - In: EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY. - ISSN 0223-5234. - 90:(2015), pp. 497-506. [10.1016/j.ejmech.2014.11.042]
New 1-phenyl-5-(1 H -pyrrol-1-yl)-1 H -pyrazole-3-carboxamides inhibit hepatitis C virus replication via suppression of cyclooxygenase-2
Pelliccia S.;Ruggieri A.;
2015
Abstract
We report here the synthesis and mechanism of inhibition of pyrazolecarboxamide derivatives as a new class of HCV inhibitors. Compounds 6, 7, 8 and 16 inhibited the subgenomic HCV replicon 1b genotype at EC50 values between 5 and 8 μM and displayed an even higher potency against the infectious Jc1 HCV 2a genotype. Compound 6 exhibited an EC50 of 6.7 μM and selectivity index of 23 against HCV 1b, and reduced the RNA copies of the infectious Jc1 chimeric 2a clone by 82% at 7 μM. Evaluation of the mode of anti-HCV activity of 6 revealed that it suppressed HCV-induced COX-2 mRNA and protein expression, displaying an IC50 of 3.2 μM in COX-2 promoter-linked luciferase reporter assay. Conversely, the anti-HCV activity of 6 was abrogated upon over-expression of COX-2. These findings suggest that 6 as a representative of these pyrazolecarboxamides function as anti-HCV agents via targeting COX-2 at both the transcription and translation levels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
