Uridine, 3-benzoyl-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-3′-[[[(trifluoromethyl)sulfonyl]oxy]methyl]-

Uridine, 3-benzoyl-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(hydroxymethyl)-5′-O-[(4-methoxyphenyl)diphenylmethyl]-

Uridine, 3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-[(hydroxyphosphinyl)methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[2-[[(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)acetyl]amino]ethyl]amino]-3-oxopropyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[2-[[(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)acetyl]amino]ethyl]amino]-3-oxopropyl]-

Uridine, 2′-deoxy-5-[3-[[2-[[(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)acetyl]amino]ethyl]amino]-3-oxopropyl]-

Uridine, 3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-[[3-[[4-[(3-aminopropyl)(trifluoroacetyl)amino]butyl](trifluoroacetyl)amino]propyl]carbamate]

Uridine, 3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-[[3-[[4-[(3-aminopropyl)amino]butyl]amino]propyl]carbamate]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-(methyl-2-propynylcarbamate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, cyclic 2′,3′-carbonate

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-[17,17,17-trifluoro-16-oxo-6,11-bis(trifluoroacetyl)-2,6,11,15-tetraazaheptadecanoate]

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

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-(18,18,18-trifluoro-17-oxo-6,9,12-trioxa-2,16-diazaoctadecanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-[[2-[2-(2,2-dimethyl-1-oxopropoxy)ethoxy]ethyl]carbamate]

L-Phenylalaninamide, N-carboxy-L-leucyl-, 2′-ester with 5′-O-[bis(4-methoxyphenyl)phenylmethyl]uridine 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-[(1,4,7,10,13-pentaoxacyclopentadec-2-ylmethyl)carbamate]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-[(1-pyrenylmethyl)carbamate]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-[[(4-iodophenyl)methyl]carbamate]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 2′-(methyl-2-propynylcarbamate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite] 2′-(N-2-propyn-1-ylcarbamate)