1-[(2R,3R,4S,5R)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-hydroxy-3-phenylselanyl-tetrahydro-furan-2-yl]-1H-pyrimidine-2,4-dione

1-<(2E,7E),(4R,6S)-diethyl 6-hydroxymethyl-5-oxanona-2,7-dienoate-4-yl>uracil

1-((2R,3S,4R,5R)-3-Bromo-4-hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-3-nitro-1H-pyrimidine-2,4-dione

5'-O-[phenyl(ethoxy-L-alaninyl)phosphoryl]uridine

1-<(2E,7E),(4R,6S)-diethyl 6-tert-butyldimetylsilyloxymethyl-5-oxanona-2,7-dienoate-4-yl>uracil