Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-N-[(dimethylamino)methylene]-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-[5-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]pentyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-N-[(dimethylamino)methylene]-2′-O-[5-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]pentyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[5-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]pentyl]-

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[5-[[(2-cyanoethoxy)carbonyl]amino]pentyl]-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[5-[[(2-cyanoethoxy)carbonyl]amino]pentyl]-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-

Adenosine, 2′-O-(5-aminopentyl)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[5-[[(2-cyanoethoxy)carbonyl]amino]pentyl]-

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-, 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]-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-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-