Process for the preparation of a fluorolacton derivative

Abstract

A novel process for the preparation of a fluorolactone derivative of the formula and of its acylated derivative of formula wherein R1 stands for a hydroxy protecting group is described. The acylated fluor lactones of formula V, particularly the benzoyl derivative with R1=benzyl are important precursors for the synthesis of prodrug compounds which have the potential to be potent inhibitors of the Hepatitis C Virus (HCV) NS5B polymerase.

Dependencies are inferred from the claim text.