Guanosine, 2′-O-methylcytidylyl-(3′→5′)-2′-O-methyladenylyl-(3′→5′)-2′-O-methyladenylyl-(3′→5′)-2′-O-methyladenylyl-(3′→5′)-2′-O-methyl-

Cytidine, guanylyl-(3′→5′)-4-thiouridylyl-(3′→5′)-uridylyl-(3′→5′)-uridylyl-(3′→5′)-

5′-[(3-Carboxypropyl)seleninyl]-5′-deoxyadenosine

5′-[(3-Aminopropyl)seleninyl]-5′-deoxyadenosine

1-[5-O-Benzoyl-3-O-[(4-methylphenyl)sulfonyl]-β-D-lyxofuranosyl]-5-fluoro-2,4(1H,3H)-pyrimidinedione

6H-Furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one, 2-[(benzoyloxy)methyl]-7-fluoro-2,3,3a,9a-tetrahydro-3-[[(4-methylphenyl)sulfonyl]oxy]-, [2R-(2α,3α,3aβ,9aβ)]-

5-Fluoro-1-[3-O-[(4-methylphenyl)sulfonyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

Thymidine, 3′-benzoate 5′-(dihydrogen phosphorodithioate)

Thymidine, 3′-benzoate 5′-[O-(9H-fluoren-9-ylmethyl) hydrogen phosphorodithioate]

Thymidine, 3′-benzoate 5′-(dihydrogen phosphorothioate)

Thymidine, 3′-benzoate 5′-[O-(9H-fluoren-9-ylmethyl) hydrogen phosphorothioate]

Thymidine, 3′-benzoate 5′-(hydrogen phosphonothioate)

Thymidine, 3′-benzoate 5′-[O-(9H-fluoren-9-ylmethyl) phosphonothioate]

1-(3,5-Di-O-benzoyl-2-chloro-2-deoxy-β-D-xylofuranosyl)-5-fluoro-2,4(1H,3H)-pyrimidinedione

1-(3,5-Di-O-benzoyl-2-chloro-2-deoxy-β-D-xylofuranosyl)-2,4(1H,3H)-pyrimidinedione

1-[3,5-Di-O-benzoyl-2-O-[(4-methylphenyl)sulfonyl]-β-D-xylofuranosyl]-2,4(1H,3H)-pyrimidinedione

Methyl (αS,βS)-4,9-dihydro-β-hydroxy-α-[(methoxycarbonyl)amino]-4,6-dimethyl-9-oxo-3-β-D-ribofuranosyl-3H-imidazo[1,2-a]purine-7-butanoate

Methyl (αS,βR)-4,9-dihydro-β-hydroxy-α-[(methoxycarbonyl)amino]-4,6-dimethyl-9-oxo-3-β-D-ribofuranosyl-3H-imidazo[1,2-a]purine-7-butanoate

Methyl (αS,βS)-4,9-dihydro-β-hydroxy-α-[(methoxycarbonyl)amino]-4,6-dimethyl-9-oxo-3-[2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-3H-imidazo[1,2-a]purine-7-butanoate