9-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-N-[(4-methoxyphenyl)diphenylmethyl]-6-(3-nitro-1H-1,2,4-triazol-1-yl)-9H-purin-2-amine

Guanosine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(triphenylmethyl)-

Guanosine, N-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 3′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)uridylyl-(2′→5′)-

Adenosine, 3′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)adenylyl-(2′→5′)-

Uridine, 3′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Adenosine, 3′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Adenosine, 2′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)adenylyl-(3′→5′)-

Cytidine, 2′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Benzo[b]thien-2-ylphosphonomethyl hydrogen 5′-cytidylate

(S)-2-Benzoxazolylphosphonomethyl hydrogen 5′-cytidylate

(R)-2-Benzoxazolylphosphonomethyl hydrogen 5′-cytidylate

(S)-2-Benzothiazolylphosphonomethyl hydrogen 5′-cytidylate

(R)-2-Benzothiazolylphosphonomethyl hydrogen 5′-cytidylate

(S)-Phosphono-2-thiazolylmethyl hydrogen 5′-cytidylate

(R)-Phosphono-2-thiazolylmethyl hydrogen 5′-cytidylate

6-Iodo-5′-uridylic acid

1-(2-Deoxy-α-D-erythro-pentofuranosyl)-1H-imidazo[4,5-b]pyridine

1-[6-Amino-2-(4-hydroxy-4-phenyl-1-butyn-1-yl)-9H-purin-9-yl]-1-deoxy-N-methyl-β-D-ribofuranuronamide

1-[6-Amino-2-(4-hydroxy-1-hexyn-1-yl)-9H-purin-9-yl]-1-deoxy-N-ethyl-β-D-ribofuranuronamide