[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl acetate

deoxythymidylyl-(5'-->3')-deoxythymidine-(Pin-->N)-phenylalanine

5'-O-(2-(2-nitrophenyl)ethoxycarbonyl)thymidine

2-(2-Nitro-phenyl)-ethanesulfonic acid (2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester

2-(2-Nitro-phenyl)-propane-1-sulfonic acid (2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester