Discovery of a 2′-fluoro-2′-C-methyl C-nucleotide HCV polymerase inhibitor and a phosphoramidate prodrug with favorable properties
2017
Abstract A series of 2′-fluorinated C -nucleosides were prepared and tested for anti-HCV activity. Among them, the triphosphate of 2′-fluoro-2′- C -methyl adenosine C -nucleoside ( 15 ) was a potent and selective inhibitor of the NS5B polymerase and maintained activity against the S282T resistance mutant. A number of phosphoramidate prodrugs were then prepared and evaluated leading to the identification of the 1-aminocyclobutane-1-carboxylic acid isopropyl ester variant ( 53 ) with favorable pharmacokinetic properties including efficient liver delivery in animals.
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