Fluorination of 5'-Deoxy-5'-(methylthio)adenosine with Xenon Difluoride Provides an Expedient Synthesis of (Fluoromethylthio) adenosine (V). -Preliminary investigations with regard to the biological activity of ( V) as a potential inhibitor of typical bacterial enzymes show that (V) inhibits 5'-methylthioadenosine nucleosidase from E. coli. -(GUILLERM, G.; GATEL, M.; J. Chem. Soc., Perkin Trans. I (1994) 2, 153-154; Lab. Chim.