2′-Deoxy-2′-fluoro-N-[(6-phenyl-2-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′-fluoro-N-(3-pyridinylcarbonyl)cytidine

2′-Deoxy-2′,2′-difluoro-N-[(5-phenyl-2-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(2-methyl-4-pyrimidinyl)carbonyl]cytidine

N-[(6-Chloro-3-pyridinyl)carbonyl]-2′-deoxy-2′,2′-difluorocytidine

2′-Deoxy-2′,2′-difluoro-N-[(6-methoxy-3-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(5-methoxy-2-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(5-nitro-2-pyridinyl)carbonyl]cytidine

1-(2-Deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-4-(3-methyl-2-oxo-1-pyrrolidinyl)-2(1H)-pyrimidinone

2′-Deoxy-2′,2′-difluoro-N-[(6-phenyl-2-pyridinyl)carbonyl]cytidine

L-Alanine, N-[(S)-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 2′-deoxy-2′,2′-difluoro-N-(3-pyridinylcarbonyl)cytidine

2′-Deoxy-2′,2′-difluoro-N-[(1-methyl-1H-pyrazol-4-yl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[[6-(trifluoromethyl)-3-pyridinyl]carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(6-methyl-2-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(3-methyl-2-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[[2-methyl-6-(trifluoromethyl)-3-pyridinyl]carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(5-methyl-2-pyridinyl)carbonyl]cytidine

2′-Deoxy-2′,2′-difluoro-N-[(5-fluoro-2-pyridinyl)carbonyl]cytidine

1-(2-Deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-4-(3-methyl-2-oxo-1-imidazolidinyl)-2(1H)-pyrimidinone