1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-5-O-[3-methoxy-1-(methoxycarbonyl)-3-oxopropyl]-β-D-arabinofuranosyl]-9H-purin-6-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[2-chloro-9-[2-deoxy-3-O-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-5-O-[(1Z)-3-methoxy-1-(methoxycarbonyl)-3-oxo-1-propen-1-yl]-β-D-arabinofuranosyl]-9H-purin-6-yl]imidodicarbonate

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

2'-Deoxy-5'-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2'-fluoroadenosine

Adenosine, 2′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2′-fluoro-, 3′-(1,1-dimethylethyl carbonate)

Adenosine, 2′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxoethyl]-2′-fluoro-, 3′-(1,1-dimethylethyl carbonate)

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

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

2-Chloro-9-[2-deoxy-5-O-[2-ethoxy-1-(ethoxycarbonyl)-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)-2-oxoethyl]-2-fluoro-β-D-arabinofuranosyl]-9H-purin-6-yl]imidodicarbonate