Thymidine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-C-[hydroxy[(4-methoxy-1-oxido-2-pyridinyl)methoxy]phosphinyl]-, 5′-acetate, (5′S)-

Thymidine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-C-(hydroxymethoxyphosphinyl)-, 5′-(methyl carbonate), (5′S)-

Thymidine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-C-(hydroxymethoxyphosphinyl)-5′-O-(tetrahydro-2H-pyran-2-yl)-

Thymidine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-C-(hydroxymethoxyphosphinyl)-, 5′-acetate, (5′S)-

Thymidine, 5′-C-(dimethoxyphosphinyl)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-, 5′-(methyl carbonate), (5′S)-

Thymidine, 5′-C-(dimethoxyphosphinyl)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-, (5′S)-

Thymidine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-C-[hydroxy[(4-methoxy-1-oxido-2-pyridinyl)methoxy]phosphinyl]-, (5′S)-

Uridine, uridylyl-(3′→5′)-cytidylyl-(3′→5′)-adenylyl-(3′→5′)-cytidylyl-(3′→5′)-guanylyl-(3′→5′)-

4-Amino-1-(3-deoxy-3,3-difluoro-β-D-threo-pentofuranosyl)-2(1H)-pyrimidinone

4-Amino-1-(3-deoxy-3,3-difluoro-α-D-threo-pentofuranosyl)-5,6-dihydro-2(1H)-pyrimidinone

4-Amino-1-(3-deoxy-3,3-difluoro-α-D-threo-pentofuranosyl)-2(1H)-pyrimidinone

4-Amino-1-[3-deoxy-3,3-difluoro-2-O-(phenylmethyl)-β-D-threo-pentofuranosyl]-2(1H)-pyrimidinone

4-Amino-1-[3-deoxy-3,3-difluoro-2-O-(phenylmethyl)-α-D-threo-pentofuranosyl]-2(1H)-pyrimidinone

N-[1-[5-O-Benzoyl-3-deoxy-3,3-difluoro-2-O-(phenylmethyl)-β-D-threo-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

N-[1-[5-O-Benzoyl-3-deoxy-3,3-difluoro-2-O-(phenylmethyl)-α-D-threo-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

Cytidine, 5′-O-(hydroxymercaptophosphinyl)-P-thioadenylyl-(2′→5′)-P-thioadenylyl-(2′→3′)-2′-deoxy-

2,4(1H,3H)-Pyrimidinedione, 1-[2,6-anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-O-(3-carboxy-1-oxopropyl)-5-deoxy-α-L-lyxo-hexofuranosyl]-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[2,7-anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-5,6-dideoxy-α-L-lyxo-heptofuranosyl]-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[2,7-anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-5,6-dideoxy-α-L-lyxo-heptofuranosyl]-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[2,7-anhydro-5,6-dideoxy-4-C-(hydroxymethyl)-α-L-lyxo-heptofuranosyl]-5-methyl-