3-Chloro-1-(2-deoxy-β-D-erythro-pentofuranosyl)-4-methoxy-1H-pyrazolo[3,4-d]pyrimidine

3-Chloro-1-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4-methoxy-1H-pyrazolo[3,4-d]pyrimidine

5′-O-[(1,1-Dimethylethyl)diphenylsilyl]-5-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-2′,3′-O-(1-methylethylidene)uridine

5′-O-[(1,1-Dimethylethyl)diphenylsilyl]-5-methyl-2′,3′-O-(1-methylethylidene)uridine

Uridine, 5′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-, 2′,3′-bis(S-methyl carbonodithioate)

5′-O-[(1,1-Dimethylethyl)diphenylsilyl]-5-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]uridine

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-[O-ethyl (R)-phosphorothioate]

Uridine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiouridylyl-(3′→5′)-, 2′,3′-dibenzoate

Guanosine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiouridylyl-(3′→5′)-N-(2-methyl-1-oxopropyl)-, 2′,3′-dibenzoate

Cytidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiouridylyl-(3′→5′)-N-benzoyl-, 2′,3′-dibenzoate

Adenosine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiouridylyl-(3′→5′)-N-benzoyl-, 2′,3′-dibenzoate

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-, 3′-[O-ethyl (R)-phosphorothioate]

Uridine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-, 2′,3′-dibenzoate

Guanosine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-N-(2-methyl-1-oxopropyl)-, 2′,3′-dibenzoate

Cytidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-N-benzoyl-, 2′,3′-dibenzoate

Adenosine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-N-benzoyl-, 2′,3′-dibenzoate

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-(O-ethyl phosphorothioate)

Uridine, [P(R)]-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiocytidylyl-(3′→5′)-, 2′,3′-dibenzoate

Guanosine, [P(R)]-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiocytidylyl-(3′→5′)-N-(2-methyl-1-oxopropyl)-, 2′,3′-dibenzoate

Cytidine, [P(R)]-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-thiocytidylyl-(3′→5′)-N-benzoyl-, 2′,3′-dibenzoate