2-Chloro-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-[[4-(tetrahydro-1,1-dioxido-2H-1,2-thiazin-2-yl)phenyl]methyl]ethyl]-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)-2-oxo-1-[[4-(tetrahydro-1,1-dioxido-2H-1,2-thiazin-2-yl)phenyl]methyl]ethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-yl]imidodicarbonate

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

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

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

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

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