Synthesis of a Difluorophosphonate Analog of the Oxathiolanyl Nucleoside (−)-β-L-(2R,5S)-1,3-Oxathianyl-5-fluorocytosine (FTC)

Abstract
A difluorophosphonate analog of (−)-β-L-(2R,5S)-l,3-oxathianyl-5-fluorocytosine (FTC) was prepared as part of an effort to probe the possibility of obviating the need for endogenous kinases in the activation of nucleosides as potential therapeutic agents.