5-[1-[[4-(Azidomethyl)phenyl]methyl]-1H-1,2,3-triazol-4-yl]-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5-[2-[tris(1-methylethyl)silyl]ethynyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-5-[2-[tris(1-methylethyl)silyl]ethynyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

N-[7-(2-Deoxy-β-D-erythro-pentofuranosyl)-5-[2-[tris(1-methylethyl)silyl]ethynyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

2,6-Diazido-9-(5-O-benzoyl-2,3-dideoxy-2,3-difluoro-α-D-arabinofuranosyl)-9H-purine

9-(2,3-Dideoxy-2,3-difluoro-β-D-arabinofuranosyl)-N6-(phenylmethyl)-9H-purine-2,6-diamine

9-(5-O-Benzoyl-2,3-dideoxy-2,3-difluoro-β-D-arabinofuranosyl)-2-chloro-N-(phenylmethyl)-9H-purin-6-amine

9-(2,3-Dideoxy-2,3-difluoro-β-D-arabinofuranosyl)-2,6-dimethoxy-9H-purine

2-Chloro-9-(2,3-dideoxy-2,3-difluoro-β-D-arabinofuranosyl)-6-methoxy-9H-purine

9-(5-O-Benzoyl-3-deoxy-3-fluoro-β-D-ribofuranosyl)-2,6-dichloro-9H-purine

9-(2-O-Acetyl-5-O-benzoyl-3-deoxy-3-fluoro-β-D-ribofuranosyl)-2,6-dichloro-9H-purine