N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′,5-trifluoro-P(O)-1-naphthalenyl-P-thio-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′,5-trifluoro-P-1-naphthalenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′,5-trifluoro-P(O)-phenyl-P-thio-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′,5-trifluoro-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N,N′-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P-thio-5′-uridylylidene]bis[L-alanine] 1,1′-bis(1-methylethyl) ester

N,N′-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-5′-uridylylidene]bis[L-alanine] 1,1′-bis(1-methylethyl) ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P(O)-2-naphthalenyl-P-thio-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P-2-naphthalenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P(O)-1-naphthalenyl-P-thio-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P-1-naphthalenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P(O)-phenyl-P-thio-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-4′-C-(difluoromethyl)-2′,2′-difluoro-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

2-Amino-9-[5-O-[bis(4-methoxyphenoxy)phosphinothioyl]-2-deoxy-4-C-(difluoromethyl)-2-fluoro-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one

2-Amino-9-[5-O-[bis(4-methoxyphenoxy)phosphinyl]-2-deoxy-4-C-(difluoromethyl)-2-fluoro-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one

2-Amino-9-[2-deoxy-4-C-(difluoromethyl)-2-fluoro-5-O-(2-sulfido-4H-1,3,2-benzodioxaphosphorin-2-yl)-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one

2-Amino-9-[2-deoxy-4-C-(difluoromethyl)-2-fluoro-5-O-(2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N,N′-(hydroxyphosphinothioylidene)bis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 2-amino-9-[2-deoxy-4-C-(difluoromethyl)-2-fluoro-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one

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

L-Alanine, N,N′-phosphinicobis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 2-amino-9-[2-deoxy-4-C-(difluoromethyl)-2-fluoro-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-[hydroxy(2-naphthalenyloxy)phosphinothioyl]-, 1-methylethyl ester, 5′-ester with 2-amino-9-[2-deoxy-4-C-(difluoromethyl)-2-fluoro-β-D-arabinofuranosyl]-1,9-dihydro-6H-purin-6-one