2-Chloro-3′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]adenosine

2-Chloro-3′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]adenosine

2-Chloro-3′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]adenosine

2-Chloro-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]adenosine

Adenosine, 2-chloro-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 3′-(1H-imidazole-1-carbothioate)

9-[5-O-[2-[4-(Aminocarbonyl)phenyl]-1,1-dicarboxyethyl]-2-deoxy-2-fluoro-β-D-arabinofuranosyl]-2-chloro-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-(2,2-difluoro-1,3-benzodioxol-5-yl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-5-O-(1,1-dicarboxy-2-phenylethyl)-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-[2-deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purine

2-Chloro-6-(cyclopentylthio)-9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purine

2-Chloro-6-(cyclopentylthio)-9-(3,5-di-O-benzoyl-2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purine

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-[4-[(methylsulfonyl)amino]phenyl]ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-1-[[4-[(methylsulfonyl)amino]phenyl]methyl]-2-oxoethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-5-O-[2-ethoxy-1-(ethoxycarbonyl)-1-[[4-[(methylsulfonyl)amino]phenyl]methyl]-2-oxoethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-yl]imidodicarbonate

9-[5-O-[2-[4-(Benzoylamino)phenyl]-1,1-dicarboxyethyl]-2-deoxy-2-fluoro-β-D-arabinofuranosyl]-2-chloro-9H-purin-6-amine