Identification of Anthranilic Acid Derivatives as a Novel Class of Allosteric Inhibitors of Hepatitis C NS5B Polymerase
Nittoli, T., Curran, K., Insaf, S., DiGrandi, M., Orlowski, M., Chopra, R., Agarwal, A., Howe, A.Y.M., Prashad, A., Brawner Floyd, M., Johnson, B., Sutherland, A., Wheless, K., Feld, B., O'Connell, J., Mansour, T.S., Bloom, J.(2007) J Med Chem 50: 2108-2116
- PubMed: 17402724 
- DOI: https://doi.org/10.1021/jm061428x
- Primary Citation of Related Structures:  
2QE2, 2QE5 - PubMed Abstract: 
A series of potent anthranilic acid-based inhibitors of the hepatitis C NS5B polymerase has been identified. The inhibitors bind to a site on NS5B between the thumb and palm regions adjacent to the active site as determined by X-ray crystallography of the enzyme-inhibitor complex. Guided by both molecular modeling and traditional SAR, the enzyme activity of the initial hit was improved by approximately 100-fold, yielding a series of potent and selective NS5B inhibitors with IC50 values as low as 10 nM. These compounds were also inhibitors of the HCV replicon in cultured HUH7 cells.
Organizational Affiliation: 
Chemical and Screening Sciences and Infectious Diseases Research, Wyeth Research, 401 N. Middletown Road, Pearl River, New York 10965, USA.