Synthesis and antiviral evaluation of 2′-deoxy-2′-C-trifluoromethyl β-<scp>d</scp>-ribonucleoside analogues bearing the five naturally occurring nucleic acid bases
2'-Deoxy-2'-C-trifluoromethyl-beta-D-ribonucleoside derivatives bearing the fivenaturallyoccurringacidbases have been synthesized. All these derivatives were prepared by glycosylation reactions of purine and pyrimidine bases with a suitable peracylated 2-deoxy-2-C-trifluoromethyl sugar precursor to afford anomeric mixtures of protected nucleosides. After separation and deprotection, the resulting beta-nucleoside