Thymidine 5′-(tetrahydrogen triphosphate), 3′-azido-3′-deoxy-, P′′-[[4-(acetyloxy)phenyl]methyl] P′′-[[4-[(1-oxodecyl)oxy]phenyl]methyl] ester

Thymidine 5′-(tetrahydrogen triphosphate), 3′-azido-3′-deoxy-, P′′-[[4-(acetyloxy)phenyl]methyl] P′′-[[4-[(1-oxooctyl)oxy]phenyl]methyl] ester

Thymidine 5′-(tetrahydrogen triphosphate), 3′-azido-3′-deoxy-, P′′-[[4-(acetyloxy)phenyl]methyl] P′′-[[4-[[4-(trifluoromethyl)benzoyl]oxy]phenyl]methyl] ester

N-[[P(R),2′R]-2′-Deoxy-2′-fluoro-2′-methyl-P-4-quinolinyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(R),2′R]-2′-Deoxy-2′-fluoro-2′-methyl-P-8-quinolinyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(R),2′R]-2′-Deoxy-2′-fluoro-P-1H-indol-5-yl-2′-methyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(R),2′R]-2′-Deoxy-2′-fluoro-2′-methyl-P-(2-oxo-2H-1-benzopyran-7-yl)-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(R),2′R]-P-1,3-Benzodioxol-4-yl-2′-deoxy-2′-fluoro-2′-methyl-5′-uridylyl]-L-alanine 1-methylethyl ester