Identification of Pyrazole Derivative as an Antiviral Agent Against Chikungunya Through HTVS

Author(s): Surender Singh Jadav, Barij Nayan Sinha, Boris Pastorino, Xavier de Lamballerie, Rolf Hilgenfeld, Venkatesan Jayaprakash

Journal Name: Letters in Drug Design & Discovery

Volume 12 , Issue 4 , 2015

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Graphical Abstract:


Structure based High-throughput Virtual Screening (HTVS) of ChikV nsP2 protease (PDB: 3TRK) with two publicly available database ZINC12 and BindingDB has been carried out to identify suitable inhibitors for the treatment of chikungunya infection. HTVS protocol implemented in GLIDE 5.0 (Schrodinger LLC) has been employed to screen the drug-like subset of ZINC12 (10,090,210) and protease inhibitors in BindingDB (83,000). One of the chemical scaffolds from the list of different chemical classes was selected for the synthesis of (ZINC04725220, compound 11). Few more schiff’s bases (13-21) were also synthesized with the intermediate 1,3-diphenyl-1H-pyrazole-4-carbaldehyde (4-6) and tested for anti-ChikV (strain OPY1, Reunion Island 2006) activity using Cytopathic effect reduction (CPE) assay. Surprisingly, only compound 11(IC50: 5µg/ml ie 14.15 µM) has shown inhibitory activity against ChikV. Further precise docking of compound 11 with target protein was carried out to understand the molecular interactions important for activity.

Keywords: Antiviral, chikungunya, HTVS, molecular docking, pyrazole derivatives, synthesis.

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Article Details

Year: 2015
Published on: 30 September, 2014
Page: [292 - 301]
Pages: 10
DOI: 10.2174/1570180811666141001005402
Price: $65

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