4-Methoxy-7-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-7H-imidazo[4,5-d]-1,2,3-triazine

7-[2,3,5-Tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-7H-imidazo[4,5-d]-1,2,3-triazin-4-amine

N,N-Diethyl-7-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-7H-imidazo[4,5-d]-1,2,3-triazin-4-amine

Adenosine, 2′-deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-thio-, 3′-(S-methyl carbonodithioate)

1-(5-O-Benzoyl-2,3-dideoxy-3-fluoro-β-D-threo-pentofuranosyl)-4-methoxy-2(1H)-pyrimidinone

9-(5-O-Benzoyl-2,3-dideoxy-3-fluoro-β-D-threo-pentofuranosyl)-6-methoxy-9H-purine

2',3'-Dideoxy-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoroadenosine

1-[5-O-Benzoyl-3-deoxy-3-fluoro-2-O-[(methylthio)thioxomethyl]-β-D-xylofuranosyl]-4-methoxy-2(1H)-pyrimidinone

Adenosine, 2′-deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-(S-methyl carbonodithioate)

9-[5-O-Benzoyl-3-deoxy-3-fluoro-2-O-[(methylthio)thioxomethyl]-β-D-xylofuranosyl]-6-methoxy-9H-purine

9-(5-O-Benzoyl-2,3-dideoxy-2-fluoro-β-D-threo-pentofuranosyl)-6-methoxy-9H-purine

Cytidine, 3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-(S-methyl carbonodithioate)

Adenosine, 2′-deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-fluoro-, 3′-(S-methyl carbonodithioate)

9-[5-O-Benzoyl-2-deoxy-2-fluoro-3-O-[(methylthio)thioxomethyl]-β-D-arabinofuranosyl]-6-methoxy-9H-purine

rel-(2R,3R,3aR,7aR)-Octahydro-5-hydroxy-5-oxido-2-[6-[(1-oxobutyl)amino]-9H-purin-9-yl]phosphorino[4,3-b]furan-3-yl butanoate