1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-methyl-β-D-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-ethyl-β-D-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 3,3'-(2,4-hexadiyne-1,6-diyl)bis[1-[(6R,8R,9R)-4-amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-, rel-

1-[2-O-(2-Aminoethyl)-β-D-ribofuranosyl]-4,6-difluoro-1H-benzimidazole

1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-ethyl-β-L-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-methyl-β-L-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[7-[[6-[(5-chloro-9,10-dihydro-9,10-dioxo-1-anthracenyl)amino]hexyl]amino]-7-oxo-1-heptyn-1-yl]-2'-deoxyuridine

5-Bromo-1-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-α-D-erythro-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3-O-(methylsulfonyl)-5-O-(triphenylmethyl)-β-D-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-α-D-erythro-pentofuranosyl]-5-iodo-2,4(1H,3H)-pyrimidinedione

2'-O-Methyl-3'-thioguanosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-O-methyl-N-(2-methyl-1-oxopropyl)-3'-thioguanosine

Benzimidazole, 5,6,7-trichloro-1-β-D-ribofuranosyl-

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

7-[3,5-Bis-O-[(2,4-dichlorophenyl)methyl]-2-C-ethynyl-β-D-ribofuranosyl]-4-chloro-7H-pyrrolo[2,3-d]pyrimidine

5-Ethynyl-7-(2-C-ethynyl-β-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-(2-C-Ethynyl-β-D-ribofuranosyl)-5-iodo-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-(2-C-Ethynyl-β-D-ribofuranosyl)-5-iodo-4-methoxy-7H-pyrrolo[2,3-d]pyrimidine

4-Chloro-7-(2-C-ethynyl-β-D-ribofuranosyl)-5-iodo-7H-pyrrolo[2,3-d]pyrimidine

4-Chloro-7-(2-C-ethynyl-β-D-ribofuranosyl)-5-fluoro-7H-pyrrolo[2,3-d]pyrimidine