2-Chloro-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-1-[[4-(methoxycarbonyl)phenyl]methyl]-2-oxoethyl]-2-fluoro-3-O-(4-nitrobenzoyl)-β-D-lyxofuranosyl]-9H-purin-6-amine

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-1-[[4-(methoxycarbonyl)phenyl]methyl]-2-oxoethyl]-2-fluoro-3-O-(4-nitrobenzoyl)-β-D-lyxofuranosyl]-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-2-fluoro-3-O-(4-nitrobenzoyl)-β-D-lyxofuranosyl]-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2-deoxy-2-fluoro-3-O-(4-nitrobenzoyl)-β-D-lyxofuranosyl]-9H-purin-6-yl]imidodicarbonate

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-(2′-hydroxy[1,1′-biphenyl]-4-yl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

9-[5-O-[2-[4-(2-Amino-5-pyrimidinyl)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-(4′-fluoro[1,1′-biphenyl]-4-yl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

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

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

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-[4-(3,5-dimethyl-4-isoxazolyl)phenyl]ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[1-[[4-(3,5-dimethyl-4-isoxazolyl)phenyl]methyl]-2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-[4-(3,5-dimethyl-1H-pyrazol-4-yl)phenyl]ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-[4-(3-methyl-1H-pyrazol-4-yl)phenyl]ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

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

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

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-[4-(3-pyridinyl)phenyl]ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

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

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

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-(4′-carboxy[1,1′-biphenyl]-4-yl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-5-O-[1,1-dicarboxy-2-(3′-carboxy[1,1′-biphenyl]-4-yl)ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-amine