| abstract |
This invention relates to single enantiomers of novel cis-substituted 1,3-oxathiolanes, of formula (I) wherein R1 is hydrogen, and R2 is cytosine or 5-fluorocytosine, and pharmaceutically acceptable salts and esters thereof. This invention also relates to pharmaceutical compositions containing them and to the use of these compounds as antiviral agents, particularly in combination therapy. |