Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(2S,4aS,7S,8aS)-hexahydro-4,4,7-trimethyl-2-sulfido-4H-1,3,2-benzoxathiaphosphorin-2-yl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(2R,4aR,7R,8aR)-hexahydro-4,4,7-trimethyl-2-sulfido-4H-1,3,2-benzoxathiaphosphorin-2-yl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(2S,6S)-4,4,6-trimethyl-2-sulfido-1,3,2-oxathiaphosphorinan-2-yl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(2R,6R)-4,4,6-trimethyl-2-sulfido-1,3,2-oxathiaphosphorinan-2-yl]-

1,6-Dihydro-1-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-6-methylene-7H-imidazo[4,5-b]pyridin-7-one

7-Amino-3,5,6,7-tetrahydro-3-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-5-methylene-4H-benzimidazol-4-one

1-[1-[5-O-[Hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-4-methyl-1H-imidazol-5-yl]-2-iodoethanone

3,5-Dihydro-3-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-5-methylene-4H-benzimidazol-4-one

3,5,6,7-Tetrahydro-3-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-5-methylene-4H-benzimidazol-4-one

2-Chloro-1-[1-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-4-methyl-1H-imidazol-5-yl]ethanone

2-Bromo-1-[1-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-4-methyl-1H-imidazol-5-yl]ethanone

1-[5-O-[Hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-4-methyl-1H-imidazole-5-carboxaldehyde

2,2,2-Trifluoro-1-[1-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-4-methyl-1H-imidazol-5-yl]ethanone

5,5-Difluoro-3,5,6,7-tetrahydro-3-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-4H-benzimidazol-4-one

Thymidine, 2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-

Guanosine, 2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxy-

Guanosine, 2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxy-

Uridine, adenylyl-(3′→5′)-guanylyl-(3′→5′)-uridylyl-(3′→5′)-cytidylyl-(3′→5′)-adenylyl-(3′→5′)-

Guanosine, guanylyl-(3′→5′)-adenylyl-(3′→5′)-guanylyl-(3′→5′)-4-thiouridylyl-(3′→5′)-guanylyl-(3′→5′)-adenylyl-(3′→5′)-

Guanosine, guanylyl-(3′→5′)-adenylyl-(3′→5′)-guanylyl-(3′→5′)-2-thiouridylyl-(3′→5′)-guanylyl-(3′→5′)-adenylyl-(3′→5′)-