N-[[P(R),2′R]-2′-Deoxy-2′-fluoro-P-[(2-methoxyphenyl)methyl]-2′-methyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[(2′R)-2′-Deoxy-2′-fluoro-P-[(2-methoxyphenyl)methyl]-2′-methyl-5′-uridylyl]-L-alanine 1-methylethyl ester

5′-Uridylic acid, 5-[bis(4-methoxyphenyl)methyl]-4-thio-, monomethyl ester

7-[2-C-Ethynyl-5-O-[(S)-[(1S)-1-methyl-2-(1-methylethoxy)-2-oxoethoxy]phenoxyphosphinyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-(2-C-Ethynyl-β-D-ribofuranosyl)-7H-purin-2-amine

7-[2,3,5-Tri-O-benzoyl-2-C-[2-(trimethylsilyl)ethynyl]-β-D-ribofuranosyl]-7H-purin-2-amine

9-[2,3,5-Tri-O-benzoyl-2-C-[2-(trimethylsilyl)ethynyl]-β-D-ribofuranosyl]-9H-purin-2-amine

L-Alanine, N-[(S)-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 2-amino-7-[2-amino-2-deoxy-2-C-(3-fluoro-1-propyn-1-yl)-β-D-ribofuranosyl]-5-fluoro-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

L-Alanine, N-[(S)-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 2-amino-7-[2-amino-2-deoxy-2-C-(3-fluoro-1-propyn-1-yl)-β-D-ribofuranosyl]-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

L-Alanine, N-[(S)-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 9-[2-amino-2-deoxy-2-(3-fluoro-1-propyn-1-yl)-β-D-ribofuranosyl]-9H-purin-2-amine

L-Alanine, N-[(S)-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 2-amino-7-(2-amino-2-deoxy-2-C-1-propyn-1-yl-β-D-ribofuranosyl)-5-fluoro-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

L-Alanine, N-[(S)-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 2-amino-7-(2-amino-2-deoxy-2-C-1-propyn-1-yl-β-D-ribofuranosyl)-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one