N-[9-[(2R,4S)-4-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]tetrahydro-5,5-bis(hydroxymethyl)-2-furanyl]-9H-purin-2-yl]-2-methylpropanamide

N-[9-[2-Deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-9H-purin-2-yl]-2-methylpropanamide

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-4′-C-[[[bis[[(2-cyanoethoxy)carbonyl]amino]methylene]amino]methyl]-2′-O-methyl-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-4′-C-[2-[(2,2,2-trifluoroacetyl)amino]ethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-4′-C-[2-[(2,2,2-trifluoroacetyl)amino]ethyl]uridine

4′-C-(2-Azidoethyl)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluorouridine

4′-C-(2-Azidoethyl)-2′-deoxy-2′-fluorouridine

4′-C-(2-Azidoethyl)-2′-deoxy-2′-fluoro-3′-O-(phenylmethyl)uridine

4′-C-(2-Azidoethyl)-2′-deoxy-2′-fluoro-3′-O-(phenylmethyl)-5′-O-(tetrahydro-2H-pyran-2-yl)uridine