L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with N-[2-chloro-9-[(3R)-2,3-dideoxy-2-fluoro-3-(hydroxymethyl)-3-methyl-β-D-threo-pentofuranosyl]-9H-purin-6-yl]butanamide

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with N-[9-[(3R)-2,3-dideoxy-2-fluoro-3-(hydroxymethyl)-3-methyl-β-D-threo-pentofuranosyl]-9H-purin-6-yl]butanamide

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 2-chloro-9-[(3R)-2,3-dideoxy-2-fluoro-3-(hydroxymethyl)-3-methyl-β-D-threo-pentofuranosyl]-N-(phenylmethyl)-9H-purin-6-amine

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 4-amino-1-[(3R)-2,3-dideoxy-2-fluoro-3-(hydroxymethyl)-3-methyl-α-D-threo-pentofuranosyl]-2(1H)-pyrimidinone

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 2-chloro-9-[(3R)-2,3-dideoxy-2-fluoro-3-methyl-3-(2H-tetrazol-5-ylmethyl)-β-D-threo-pentofuranosyl]-N-(phenylmethyl)-9H-purin-6-amine

4-Amino-1-[(4aR,5S,7R,7aS)-tetrahydro-7-(hydroxymethyl)-2,2,4a-trimethyl-4H-furo[3,4-d]-1,3-dioxin-5-yl]-2(1H)-pyrimidinone

4-Amino-1-[(4aR,5R,7R,7aS)-tetrahydro-7-(hydroxymethyl)-2,2,4a-trimethyl-4H-furo[3,4-d]-1,3-dioxin-5-yl]-2(1H)-pyrimidinone

N-[1-[(2R)-2-Deoxy-2-(hydroxymethyl)-2-methyl-α-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]acetamide

N-[1-[(2R)-3,5-Di-O-benzoyl-2-[(benzoyloxy)methyl]-2-deoxy-2-methyl-α-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]acetamide