N-[[[(3aS,4S,6R,6aR)-6-(3,4-Dihydro-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-6a-methyl-2-oxo-1H-furo[3,4-d]imidazol-4-yl]methoxy](1-naphthalenyloxy)phosphinyl]-L-alanine 2-methylpropyl ester

N-[[[(3aR,4S,6R,6aS)-6a-Chloro-6-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-2-thioxo-1H-furo[3,4-d]imidazol-4-yl]methoxy](1-naphthalenyloxy)phosphinyl]-L-alanine 2-methylpropyl ester

N-[[[(3aR,4R,6R,6aS)-6a-Chloro-6-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-fluorohexahydro-2-oxo-1H-furo[3,4-d]imidazol-4-yl]methoxy](1-naphthalenyloxy)phosphinyl]-L-alanine 2-methylpropyl ester

Thymidine, 5′-O-phosphorylcytidylyl-(3′→5′)-

N-[[[(3aR,4R,6R,6aS)-6a-Chloro-6-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-fluorohexahydro-2-thioxo-1H-furo[3,4-d]imidazol-4-yl]methoxy](1-naphthalenyloxy)phosphinyl]-L-alanine 2-methylpropyl ester

N-[[[(3aR,4S,6R,6aS)-6a-Chloro-6-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-2-oxo-1H-furo[3,4-d]imidazol-4-yl]methoxy](1-naphthalenyloxy)phosphinyl]-L-alanine 2-methylpropyl ester

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinyl]-, 2-methylpropyl ester, 5′-ester with 1-[4-C-fluoro-3-C-hydroxy-2-C-(hydroxymethyl)-β-D-threo-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinyl]-, 2-methylpropyl ester, 5′-ester with 1-[3-C-hydroxy-2-C-(hydroxymethyl)-β-D-threo-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinyl]-, 2-methylpropyl ester, 5′-ester with 1-[4-C-fluoro-2-C-(hydroxymethyl)-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

L-Alanine, N-[hydroxy(1-naphthalenyloxy)phosphinyl]-, 2-methylpropyl ester, 5′-ester with 1-[2-C-(hydroxymethyl)-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

N-[2′-Deoxy-4′-C-fluoro-3′-C-hydroxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[2′-Deoxy-3′-C-hydroxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[2′-Deoxy-4′-C-fluoro-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[2′-Deoxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[(2′S)-2′-Cyano-2′-deoxy-4′-C-fluoro-3′-C-hydroxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[(2′S)-2′-Cyano-2′-deoxy-3′-C-hydroxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[(2′R)-2′-Cyano-2′-deoxy-4′-C-fluoro-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[(2′R)-2′-Cyano-2′-deoxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[(2′R)-2′-Deoxy-2′-fluoro-4′-C-fluoro-3′-C-hydroxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester

N-[(2′R)-2′-Deoxy-2′-fluoro-3′-C-hydroxy-2′-(hydroxymethyl)-P-1-naphthalenyl-5′-uridylyl]-L-alanine 2-methylpropyl ester