A series of 4H-pyrazolo[1,5-a]pyrimidin-7-one derivatives was synthesized and evaluated for inhibitory activity against HCV NS5B RNA-dependent RNA polymerase. A number of these compounds exhibited potent activity in enzymatic assay. The synthesis and structure-activity relationship are also described.

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http://dx.doi.org/10.1016/j.bmcl.2009.07.124DOI Listing

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