Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(4S)-4-[[4-[[[1,4-dihydro-2-[(2-methyl-1-oxopropyl)amino]-4-oxo-6-pteridinyl]methyl](trifluoroacetyl)amino]benzoyl]amino]-1,5-dioxo-5-(2-propenyloxy)pentyl]amino]hexyl]-5-methyl-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(2S)-2-[[4-[[[1,4-dihydro-2-[(2-methyl-1-oxopropyl)amino]-4-oxo-6-pteridinyl]methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(2S)-2-[[4-[[[1,4-dihydro-2-[(2-methyl-1-oxopropyl)amino]-4-oxo-6-pteridinyl]methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5-methyl-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(4S)-4-[[4-[[[1,4-dihydro-2-[(2-methyl-1-oxopropyl)amino]-4-oxo-6-pteridinyl]methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(4S)-4-[[4-[[[1,4-dihydro-2-[(2-methyl-1-oxopropyl)amino]-4-oxo-6-pteridinyl]methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5-methyl-

Uridine, 2′-O-[6-[[(2S)-2-[[4-[[(2-amino-1,4-dihydro-4-oxo-6-pteridinyl)methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Uridine, 2′-O-[6-[[(2S)-2-amino-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-5-methyl-

Uridine, 2′-O-[6-[[(2S)-2-amino-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(2S)-5-(1,1-dimethylethoxy)-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1,5-dioxopentyl]amino]hexyl]-

Uridine, 2′-O-[6-[[(4S)-4-[[4-[[(2-amino-1,4-dihydro-4-oxo-6-pteridinyl)methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 2′-O-[6-[[(4S)-4-[[4-[[(2-amino-1,4-dihydro-4-oxo-6-pteridinyl)methyl](trifluoroacetyl)amino]benzoyl]amino]-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Uridine, 2′-O-[6-[[(4S)-4-amino-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-5-methyl-

Uridine, 2′-O-[6-[[(4S)-4-amino-5-(1,1-dimethylethoxy)-1,5-dioxopentyl]amino]hexyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(4S)-5-(1,1-dimethylethoxy)-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1,5-dioxopentyl]amino]hexyl]-5-methyl-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[6-[[(4S)-5-(1,1-dimethylethoxy)-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1,5-dioxopentyl]amino]hexyl]-

5-Methyl-2′-O,4′-C-methylene-P-thiouridylyl-(3′→5′)-2′-O,4′-C-methylene-P-thioguanylyl-(3′→5′)-2′-O,4′-C-methylene-P-thioguanylyl-(3′→5′)-2′-O,4′-C-methylene-P-thiocytidylyl-(3′→5′)-2′-O,4′-C-methylene-P-thioadenylyl-(3′→5′)-2′-O,4′-C-methylene-P-thioguanylyl-(3′→5′)-2′-O,4′-C-methylene-P-thiocytidy..

5-Methyl-2′-O,4′-C-methylene-P-thiouridylyl-(3′→5′)-2′-O,4′-C-methylene-P-thioguanylyl-(3′→5′)-2′-O,4′-C-methyleneguanylyl-(3′→5′)-2′-O,4′-C-methylenecytidylyl-(3′→5′)-2′-O,4′-C-methyleneadenylyl-(3′→5′)-2′-O,4′-C-methylene-P-thioguanylyl-(3′→5′)-2′-O,4′-C-methylene-P-thiocytidylyl-(3′→5′)-5-methyl-..

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridylyl-(3′→5′)-guanylyl-(3′→5′)-cytidylyl-(3′→5′)-uridine

Uridylyl-(3′→5′)-guanylyl-(3′→5′)-cytidylyl-(3′→5′)-guanosine