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

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

2H,3H,6H-Furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one, 2-(2-azidoethyl)-3a,4a,5,9a-tetrahydro-3-(phenylmethoxy)-2-[[(tetrahydro-2H-pyran-2-yl)oxy]methyl]-, (2R,3S,3aS,9aR)-

2H,3H,6H-Furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one, 2-(2-azidoethyl)-3a,4a,5,9a-tetrahydro-2-(hydroxymethyl)-3-(phenylmethoxy)-, (2R,3S,3aS,9aR)-

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

N-Acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-methyl-4′-C-[2-[(2,2,2-trifluoroacetyl)amino]ethyl]cytidine

N-Acetyl-4′-C-(2-azidoethyl)-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-3′-O-(phenylmethyl)cytidine

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

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

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-4′-C-[3-[(2,2,2-trifluoroacetyl)amino]propyl]uridine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-4′-C-[3-[(2,2,2-trifluoroacetyl)amino]propyl]uridine

4′-C-(3-Azidopropyl)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]uridine

4′-C-(3-Azidopropyl)uridine