5'-O-DMT-2'-O-methylguanosine

5-[2-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]ethynyl]-2-[(1E,3E)-3-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1-propen-1-yl]-1,3,3-trimethyl-3H-indolium

9-(2-Deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-6-fluoro-9H-purin-2-amine

1-[(2R,4S,5R)-4-[Bis(4-methoxyphenyl)phenylmethoxy]-5-[1-[(2R,3S,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2-ethynyltetrahydro-3-furanyl]-1H-1,2,3-triazol-4-yl]tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 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]-3-ethyl-

1-[(2R,4S,5R)-4-[Bis(4-methoxyphenyl)phenylmethoxy]-5-ethynyltetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2'-Deoxy-5-[2-[4'-(2-fluoroethoxy)[1,1'-biphenyl]-4-yl]ethynyl]uridine

2'-Deoxy-5-[2-(4'-hydroxy[1,1'-biphenyl]-4-yl)ethynyl]uridine

1-[2-O-[1,4-Dioxo-4-[2-[[(9Z)-1-oxo-9-octadecen-1-yl]oxy]-1-[[[(9Z)-1-oxo-9-octadecen-1-yl]oxy]methyl]ethoxy]butyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[3,5-O-[Bis(1,1-dimethylethyl)silylene]-2-O-[1,4-dioxo-4-[2-[[(9Z)-1-oxo-9-octadecen-1-yl]oxy]-1-[[[(9Z)-1-oxo-9-octadecen-1-yl]oxy]methyl]ethoxy]butyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-[[2,3-bis(octadecyloxy)propyl]amino]-2'-deoxyuridine

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-methyl-2,2-dioxido-3-phenyl-6-[(phenylmethoxy)methyl]-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-3-phenyl-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-3-ethyl-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-3-phenyl-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-3-phenyl-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-(hydroxymethyl)-2,2-dioxido-3-phenyl-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2'-Deoxy-N-(2-furanylmethyl)-5-methylcytidine

N-[Bis(4-methoxyphenyl)phenylmethyl]-2'-C-methylcytidine

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-(hydroxymethyl)-1-methyl-2,2-dioxido-3-phenyl-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-2,4(1H,3H)-pyrimidinedione

Guanosine, 2'-deoxy-2'-ethynyl-2'-fluoro-, 5'-[2-[(3-hydroxy-2,2-dimethyl-1-oxopropyl)thio]ethyl N-(phenylmethyl)phosphoramidate], (2'R)-