1,3-Bis(1,1-dimethylethyl) 2-[9-(2-azido-2-deoxy-β-D-arabinofuranosyl)-9H-purin-6-yl]imidodicarbonate

2′-Azido-2′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]adenosine

1,3-Bis(1,1-dimethylethyl) 2-[9-[2-azido-2-deoxy-3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-β-D-arabinofuranosyl]-9H-purin-6-yl]imidodicarbonate

2′-Azido-2′-deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]adenosine

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, (P→3′),(P′→5′)-diester with 7-amino-1-(2-deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-1,6-dihydro-5H-imidazo[4′,5′:4,5]thieno[3,2-d]pyrimidin-5-one

7-Amino-1-[2-deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-1,6-dihydro-5H-imidazo[4′,5′:4,5]thieno[3,2-d]pyrimidin-5-one

6-Amino-1-[2-deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-1H-thieno[2,3-d]imidazole-5-carboxamide

2-[[5-Cyano-1-[2-deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-1H-imidazol-4-yl]thio]acetamide

1-[2-Deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-4-iodo-1H-imidazole-5-carbonitrile

1-[2-Deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-4-iodo-1H-imidazole-5-carboxaldehyde oxime

1-[2-Deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-4-iodo-1H-imidazole-5-carboxaldehyde

1-[2-Deoxy-2,2-difluoro-3,5-bis-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-4,5-diiodo-1H-imidazole

1-(2-Deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-4,5-diiodo-1H-imidazole

1-(3,5-Di-O-benzoyl-2-deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-4,5-diiodo-1H-imidazole

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 7-amino-1-(2-deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-1,6-dihydro-5H-imidazo[4′,5′:4,5]thieno[3,2-d]pyrimidin-5-one

7-Amino-1-(2-deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-1,6-dihydro-5H-imidazo[4′,5′:4,5]thieno[3,2-d]pyrimidin-5-one

1-[(1R,5R,7R,8S)-5-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-3-methyl-6-oxa-3-azabicyclo[3.2.1]oct-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Adenosine, 2-chloro-N-cyclohexyl-2′,3′-O-(1-methylethylidene)-, 5′-(hydrogen sulfate)

1-[2,5-Anhydro-3-O-[(2R)-2-sulfido-3-oxa-1-thia-2-phosphaspiro[4.5]dec-2-yl]-4-C-(hydroxymethyl)-α-L-lyxofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

N′-[9-[2,3-Anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-O-[(2S)-2-sulfido-3-oxa-1-thia-2-phosphaspiro[4.5]dec-2-yl]-α-L-lyxofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide