N-[1-[(2R)-2-Chloro-2-deoxy-2-fluoro-β-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

N-[1-[(2R)-2-Chloro-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

N-[(2′R)-2′-Chloro-2′-deoxy-2′-fluoro-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 6-chloro-9-[(2S)-2-chloro-2-deoxy-2-fluoro-β-D-erythro-pentofuranosyl]-9H-purin-2-amine

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 1,3-bis(1,1-dimethylethyl) 2-[6-chloro-9-[(2S)-2-chloro-2-deoxy-2-fluoro-β-D-erythro-pentofuranosyl]-9H-purin-2-yl]imidodicarbonate

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

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

N-[1-[(2S)-2-Chloro-2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

1-[(2S)-2-Chloro-2-deoxy-2-fluoro-α-D-erythro-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[(2S)-2-Chloro-2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-D-erythro-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

N-[9-[2-O-Acetyl-5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[(S)-[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-xylofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]acetamide

N-[9-[2-O-Acetyl-5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[(R)-[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-xylofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]acetamide

N-[9-[2-O-Acetyl-5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[(S)-[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-xylofuranosyl]-9H-purin-6-yl]benzamide

N-[9-[2-O-Acetyl-5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[(R)-[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-xylofuranosyl]-9H-purin-6-yl]benzamide

2′-Deoxy-β-D-threo-guanylyl-(3′→5′)-β-D-threo-thymidylyl-(3′→5′)-2′-deoxy-β-D-threo-guanylyl-(3′→5′)-β-D-threo-thymidylyl-(3′→5′)-2′-deoxy-β-D-threo-adenylyl-(3′→5′)-2′-deoxy-β-D-threo-cytidylyl-(3′→5′)-2′-deoxy-β-D-threo-adenylyl-(3′→5′)-2′-deoxy-β-D-threo-cytidine

β-D-xylo-Guanylyl-(3′→5′)-β-D-xylo-uridylyl-(3′→5′)-β-D-xylo-guanylyl-(3′→5′)-β-D-xylo-uridylyl-(3′→5′)-β-D-xylo-adenylyl-(3′→5′)-β-D-xylo-cytidylyl-(3′→5′)-β-D-xylo-adenylyl-(3′→5′)-β-D-xylo-cytidine

N-[7-[2-O-Acetyl-3,5-bis-O-(phenylmethyl)-β-D-xylofuranosyl]-6,7-dihydro-6-oxo-1H-purin-2-yl]acetamide

N-[9-[2-O-Acetyl-3,5-bis-O-(phenylmethyl)-α-D-xylofuranosyl]-9H-purin-6-yl]benzamide