4-amino-6-(4-bromophenyl)-5-cyano-7-(2,3,5-tri-O-benzoyl-β-L-xylofuranosyl)pyrrolo[2,3-d]pyrimidine

1-(3',5'-di-O-benzoyl-2'-deoxy-2'-fluoro-β-L-arabinofuranosyl)thymine

1-[2-deoxy-3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-β-L-erythro-pentofuranosyl]-5-azacytosine

1-[3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-β-L-ribofuranosyl]-5-azacytosine

Dimethyl 2-(2',3',5'-tri-O-benzoyl-β-L-ribofuranosyl)-1,2,3-triazole-4,5-dicarboxylate