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

L-Alanine, N-(hydroxymercaptophosphinyl)-, 1-methylethyl ester, 5′-ester with 9-[(3R)-2,3-dideoxy-2-fluoro-3-methyl-3-[2-[[(4-methylphenyl)sulfonyl]amino]ethyl]-β-D-threo-pentofuranosyl]-6-methoxy-9H-purine

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

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

L-Alanine, N-(hydroxymercaptophosphinyl)-, 1-methylethyl ester, 5′-ester with 9-[(3R)-3-(cyanomethyl)-2,3-dideoxy-2-fluoro-3-methyl-β-D-threo-pentofuranosyl]-6-methoxy-9H-purine

L-Alanine, N-(hydroxymercaptophosphinyl)-, 1-methylethyl ester, 5′-ester with 9-[(3R)-3-(2-aminoethyl)-2,3-dideoxy-2-fluoro-3-methyl-β-D-threo-pentofuranosyl]-6-methoxy-9H-purine

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

L-Alanine, N-(hydroxymercaptophosphinyl)-, 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]-6-methoxy-9H-purine

L-Alanine, N-(hydroxymercaptophosphinyl)-, 1-methylethyl ester, 5′-ester with 2-chloro-9-[(3R)-3-(cyanomethyl)-2,3-dideoxy-2-fluoro-3-methyl-β-D-threo-pentofuranosyl]-6-methoxy-9H-purine

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

N-[(3′R)-3′-Deoxy-5-fluoro-3′-(hydroxymethyl)-3′-methyl-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

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