1-[2,6-Anhydro-3,5-dideoxy-4-C-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-[[(4-methoxyphenyl)diphenylmethyl]amino]-α-L-lyxo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3-Amino-2,6-anhydro-3,5-dideoxy-4-C-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-α-L-lyxo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2,6-Anhydro-3-azido-3,5-dideoxy-4-C-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-α-L-lyxo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Uridine, 3′-azido-3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-4′-C-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-, 2′-acetate

1-[2,6-Anhydro-4-C-[[[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]oxy]methyl]-3,5-dideoxy-3-[[(4-methoxyphenyl)diphenylmethyl]amino]-α-L-lyxo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

N-Benzoyl-3′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-ethylcytidine

N-Benzoyl-3′-O-[bis(4-methoxyphenyl)phenylmethyl]-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-ethylcytidine

N-Benzoyl-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-ethylcytidine

N-Benzoyl-2′-O-ethyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]cytidine

Cytidine, N-benzoyl-3′-deoxy-2′-O-ethyl-3′-[[(4-methoxyphenyl)diphenylmethyl]amino]-, 5′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

N-Benzoyl-3′-deoxy-3′-[[(4-methoxyphenyl)diphenylmethyl]amino]-2′-O-[2-(trifluoromethoxy)ethyl]cytidine

Cytidine, N-benzoyl-3′-deoxy-3′-[[(4-methoxyphenyl)diphenylmethyl]amino]-2′-O-[2-(trifluoromethoxy)ethyl]-, 5′-benzoate

Cytidine, 3′-amino-N-benzoyl-3′-deoxy-2′-O-[2-(trifluoromethoxy)ethyl]-, 5′-benzoate

Cytidine, 3′-azido-N-benzoyl-3′-deoxy-2′-O-[2-(trifluoromethoxy)ethyl]-, 5′-benzoate

Cytidine, N-benzoyl-3′-deoxy-3′-[[(4-methoxyphenyl)diphenylmethyl]amino]-2′-O-[2-(trifluoromethoxy)ethyl]-, 5′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

3′-Deoxy-3′-[[(4-methoxyphenyl)diphenylmethyl]amino]-2′-O-[2-(trifluoromethoxy)ethyl]uridine

3′-Deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-[[(4-methoxyphenyl)diphenylmethyl]amino]-2′-O-[2-(trifluoromethoxy)ethyl]uridine

3′-Amino-3′-deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-O-[2-(trifluoromethoxy)ethyl]uridine

3′-Azido-3′-deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-O-[2-(trifluoromethoxy)ethyl]uridine

3′-Azido-3′-deoxy-2′-O-[2-(trifluoromethoxy)ethyl]uridine