2-Chloro-9-[(2R)-2-deoxy-2-(hydroxymethyl)-2-methyl-α-D-erythro-pentofuranosyl]-9H-purin-6-amine

2,6-Dichloro-9-[(2R)-3,5-di-O-benzoyl-2-[(benzoyloxy)methyl]-2-deoxy-2-methyl-α-D-erythro-pentofuranosyl]-9H-purine

2,6-Dichloro-9-[(2R)-3,5-di-O-benzoyl-2-[(benzoyloxy)methyl]-2-deoxy-2-methyl-β-D-erythro-pentofuranosyl]-9H-purine

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

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with N-[1-[(3R)-2,3-dideoxy-2-fluoro-3-(hydroxymethyl)-3-methyl-β-D-threo-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]butanamide

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]-5-fluoro-2(1H)-pyrimidinone

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