1-[(2S,4S,5R)-2-Acetyl-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-1H-pyrimidine-2,4-dione

(2R,3S,4S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((benzoyloxy)methyl)-5-cyano-4-hydroxytetrahydrofuran-3-yl benzoate

3',5'-di-O-benzoyl-1'-C-carbamoyl-O2,2'-cyclouridine

(2R,3R,4S,5R)-4-acetoxy-2-((benzoyloxy)methyl)-5-cyano-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl benzoate

1-(2-O-acetyl-3,5-di-O-benzoyl-1-C-carbamoyl-β-D-arabino-pentofuranosyl)uracil