3′-Guanylic acid, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)guanylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)-, 3′-(2-chlorophenyl) ester

3′-Guanylic acid, 2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)-, 3′-anhydride with 4-methoxybenzoic acid

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)guanylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′,3′-O-(ethoxymethylene)-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′,3′-O-(ethoxymethylene)-

3′-Guanylic acid, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′-O-(tetrahydro-2H-pyran-2-yl)-, 3′-anhydride with 4-methoxybenzoic acid, 3′-(2-chlorophenyl) ester

Uridine, 5′-deoxy-, 2′,3′-diacetate

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-2,3,7,9-tetrahydro-7,7,9,9-tetramethyl-2-oxopyrimido[5,4-b]pyrrolo[3,4-g][1,4]benzoxazin-8(1H)-yloxy

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-3,7,8,9-tetrahydro-7,7,9,9-tetramethyl-8-(sulfinooxy)pyrimido[5,4-b]pyrrolo[3,4-g][1,4]benzoxazin-2(1H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-3,7,8,9-tetrahydro-8-hydroxy-7,7,9,9-tetramethylpyrimido[5,4-b]pyrrolo[3,4-g][1,4]benzoxazin-2(1H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-2,3,7,9-tetrahydro-7,7,9,9-tetramethyl-2-oxopyrimido[5,4-b]pyrrolo[3,4-g][1,4]benzoxazin-8(1H)-yloxy

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-3,7,8,9-tetrahydro-7,7,9,9-tetramethylpyrimido[5,4-b]pyrrolo[3,4-g][1,4]benzoxazin-2(1H)-one

Cytidine, 5-bromo-2′-deoxy-N-(2,3-dihydro-6-hydroxy-1,1,3,3-tetramethyl-1H-isoindol-5-yl)-, 3′,5′-diacetate

3′,5′-Bis-O-[(1,1-dimethylethyl)dimethylsilyl]thymidin-5′-C-yl

2′-Deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)guanosin-5′-C-yl

Thymidin-5′-C-yl

N-[(6S,7S,8S,10R)-6,8-Bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-3,6,7,8,9,10-hexahydro-4-oxo-7,10-epoxy-4H-azepino[1,2-e]purin-2-yl]-2-methylpropanamide

N-[6,9-Dihydro-6-oxo-9-[2,7,8-trideoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-7,7-dimethyl-α-L-lyxo-octofuranos-6-ulos-1-yl]-1H-purin-2-yl]-2-methylpropanamide

N-[6,9-Dihydro-6-oxo-9-[2,6,7,8-tetradeoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-6-imino-7,7-dimethyl-α-L-lyxo-octofuranosyl]-1H-purin-2-yl]-2-methylpropanamide

(5ξ)-1,2-Dideoxy-1-[1,6-dihydro-2-[(2-methyl-1-oxopropyl)amino]-6-oxo-9H-purin-9-yl]-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-hexofuranurononitrile

1,2-Dideoxy-1-[1,6-dihydro-2-[(2-methyl-1-oxopropyl)amino]-6-oxo-9H-purin-9-yl]-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-α-L-lyxo-hexofuranurononitrile