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Molecules 2011, 16(1), 281-290; doi:10.3390/molecules16010281

An Efficient New Route to Dihydropyranobenzimidazole Inhibitors of HCV Replication

1,* , 2, 2 and 1,*
1 Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA 92182, USA 2 Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, CA 92093, USA
* Authors to whom correspondence should be addressed.
Received: 15 November 2010 / Revised: 24 December 2010 / Accepted: 28 December 2010 / Published: 30 December 2010
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A class of dihydropyranobenzimidazole inhibitors was recently discovered that acts against the hepatitis C virus (HCV) in a new way, binding to the IRES-IIa subdomain of the highly conserved 5' untranslated region of the viral RNA and thus preventing the ribosome from initiating translation. However, the reported synthesis of these compounds is lengthy and low-yielding, the intermediates are troublesome to purify, and the route is poorly structured for the creation of libraries. We report a streamlined route to this class of inhibitors in which yields are far higher and most intermediates are crystalline. In addition, a key variable side chain is introduced late in the synthesis, allowing analogs to be easily synthesized for optimization of antiviral activity.
Keywords: HCV; benzimidazole; RNA; replication; inhibitor HCV; benzimidazole; RNA; replication; inhibitor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Parker, M.A.; Satkiewicz, E.; Hermann, T.; Bergdahl, B.M. An Efficient New Route to Dihydropyranobenzimidazole Inhibitors of HCV Replication. Molecules 2011, 16, 281-290.

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