1,3-Bis(1,1-dimethylethyl) 2-[9-[3-azido-3-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-β-D-xylofuranosyl]-2-chloro-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[9-[3-azido-3-deoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-β-D-xylofuranosyl]-2-chloro-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[9-[3-azido-3-deoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-β-D-xylofuranosyl]-2-chloro-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[9-[3-azido-3-deoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-xylofuranosyl]-2-chloro-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[9-[3-azido-3-deoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-xylofuranosyl]-2-chloro-9H-purin-6-yl]imidodicarbonate

9-[3-Azido-3-deoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-xylofuranosyl]-2-chloro-9H-purin-6-amine

2-Chloro-9-[2,3-dideoxy-5-O-(1,1-dicarboxy-2-phenylethyl)-2-fluoro-β-D-threo-pentofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2,3-dideoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2-fluoro-β-D-threo-pentofuranosyl]-9H-purin-6-amine

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2,3-dideoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2-fluoro-β-D-threo-pentofuranosyl]-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2,3-dideoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-2-fluoro-β-D-threo-pentofuranosyl]-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-(2,3-dideoxy-2-fluoro-β-D-threo-pentofuranosyl)-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2,3-dideoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-threo-pentofuranosyl]-9H-purin-6-yl]imidodicarbonate

2-Chloro-9-[2,3-dideoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-threo-pentofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-3-O-(1H-imidazol-1-ylthioxomethyl)-β-D-arabinofuranosyl]-9H-purin-6-amine

Adenosine, 2-chloro-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3′-C-methyl-, 2′,3′-diacetate

Adenosine, 2-chloro-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3′-C-methyl-, 2′,3′-diacetate

Adenosine, 2-chloro-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-3′-C-methyl-, 2′,3′-diacetate

Adenosine, 2-chloro-N,N-bis[(1,1-dimethylethoxy)carbonyl]-3′-C-methyl-, 2′,3′-diacetate

Adenosine, 2-chloro-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3′-C-methyl-, 2′,3′-diacetate

Adenosine, 2-chloro-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3′-C-methyl-, 2′,3′-diacetate