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

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

L-Alanine, N,N′-phosphinicobis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-[hydroxy(2-naphthalenyloxy)phosphinothioyl]-, 1-methylethyl ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-[hydroxy(2-naphthalenyloxy)phosphinyl]-, 1-methylethyl ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinothioyl]-, 1-methylethyl ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinyl]-, 1-methylethyl ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-(hydroxyphenoxyphosphinothioyl)-, 1-methylethyl ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 2-amino-9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-1,9-dihydro-6H-purin-6-one

L-Alanine, N,N′-(hydroxyphosphinothioylidene)bis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N,N′-phosphinicobis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N-[hydroxy(2-naphthalenyloxy)phosphinothioyl]-, 1-methylethyl ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N-[hydroxy(2-naphthalenyloxy)phosphinyl]-, 1-methylethyl ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinothioyl]-, 1-methylethyl ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinyl]-, 1-methylethyl ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N-(hydroxyphenoxyphosphinothioyl)-, 1-methylethyl ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 9-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-9H-purin-6-amine

L-Alanine, N,N′-(hydroxyphosphinothioylidene)bis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 4-amino-5-chloro-1-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-2(1H)-pyrimidinone

L-Alanine, N,N′-phosphinicobis-, 1,1′-bis(1-methylethyl) ester, 5′-ester with 4-amino-5-chloro-1-[3-deoxy-4-C-(difluoromethyl)-3-fluoro-β-D-xylofuranosyl]-2(1H)-pyrimidinone