Adenosine, N-benzoyl-, 2′,3′-dibenzoate 5′-[hydrogen [(2S)-1-oxo-3-[4-[tris[4-(benzoyloxy)phenyl]methoxy]phenyl]-2-[[tris[4-(benzoyloxy)phenyl]methyl]amino]propyl]phosphoramidate]

Adenosine, N-benzoyl-, 2′,3′-dibenzoate 5′-[hydrogen [(2S,3S)-3-methyl-1-oxo-2-[[tris[4-(benzoyloxy)phenyl]methyl]amino]pentyl]phosphoramidate]

Thymidine, 3′-benzoate 3′-[2-cyanoethyl (phenylacetyl)phosphoramidate]

Cytidine, guanylyl-(3′→5′)-uridylyl-(3′→5′)-guanylyl-(3′→5′)-cytidylyl-(3′→5′)-adenylyl-(3′→5′)-cytidylyl-(3′→5′)-adenylyl-(3′→5′)-2′-deoxy-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-benzoate 6-(diphenylcarbamate)

Guanosine, N-(2-furanylcarbonyl)-

Inosine, 2-(allylthio)-, 5′-(dihydrogen phosphate)

Cytidine, N-(1-oxopropyl)-, 2′,3′,5′-tripropanoate

Cytidine, N-(1-oxobutyl)-, 2,3,5-tributanoate

1-[(1S,3R,4R,5S)-4-Hydroxy-1-(hydroxymethyl)-6-methyl-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4R,5S)-1-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]-6-methyl-4-[(triethylsilyl)oxy]-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4R,5S)-1-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]-4-[(triethylsilyl)oxy]-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4R,5S)-1-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]-4-[(triethylsilyl)oxy]-6-(2,2,2-trifluoroacetyl)-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Phosphoramidous acid, bis(1-methylethyl)-, (1S,3R,4R,5S)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-6-(trifluoroacetyl)-2-oxa-6-azabicyclo[3.2.0]hept-4-yl 2-cyanoethyl ester

1-[(1S,3R,4R,5S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-4-hydroxy-6-(2,2,2-trifluoroacetyl)-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4R,5S)-4-Hydroxy-1-(hydroxymethyl)-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Phenylmethyl (1S,3R,4R,5S)-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-4-hydroxy-1-(hydroxymethyl)-2-oxa-6-azabicyclo[3.2.0]heptane-6-carboxylate

1-[(1S,3R,4R,5S)-4-Hydroxy-1-(hydroxymethyl)-6-(2,2,2-trifluoroacetyl)-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Phenylmethyl (1S,3R,4R,5S)-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-1-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-4-hydroxy-2-oxa-6-azabicyclo[3.2.0]heptane-6-carboxylate

1-[(1S,3R,4R,5S)-1-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]-4-hydroxy-6-(2,2,2-trifluoroacetyl)-2-oxa-6-azabicyclo[3.2.0]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione