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

Adenosine, [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

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

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

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

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

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

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