N-[[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-2-[(2-methylpropyl)amino]-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl]methyl]-2,2,2-trifluoroacetamide

N-[[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-2-[(2-methylpropyl)amino]-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl]methyl]-2,2,2-trifluoroacetamide

5-(Aminomethyl)-7-(2-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-2-[(2-methylpropyl)amino]-4H-pyrrolo[2,3-d]pyrimidin-4-one

7-(2-Deoxy-β-D-erythro-pentofuranosyl)-4,7-dihydro-2-[(2-methylpropyl)amino]-4-oxo-3H-pyrrolo[2,3-d]pyrimidine-5-carboxamide

2-Amino-4-chloro-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide

4-Chloro-7-[2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-2-[[(1,1-dimethylethyl)dimethylsilyl]amino]-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide

Uridine, 5-[(1E)-3-[[2-[1-(2-aminoethyl)-2-hydroxy-2-nitrosohydrazinyl]ethyl]amino]-3-oxo-1-propen-1-yl]-2′-deoxy-, ion(1-)

Methyl (2E)-3-[1-[3-O-[[bis(1-methylethyl)amino](2-cyanoethyl)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-2-propenoate

4-[5-(Bicyclo[2.2.1]hept-5-en-2-yloxy)-1-pentyn-1-yl]-6-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]thieno[2,3-c]pyridine-7(6H)-thione

(2-Methyl-2-cyclopropen-1-yl)methyl N-[3-[6,7-dihydro-6-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-7-thioxothieno[2,3-c]pyridin-4-yl]-2-propyn-1-yl]carbamate

(2-Methyl-2-cyclopropen-1-yl)methyl N-[3-(6,7-dihydro-6-β-D-ribofuranosyl-7-thioxothieno[2,3-c]pyridin-4-yl)-2-propyn-1-yl]carbamate

[2-Methyl-3-(trimethylsilyl)-2-cyclopropen-1-yl]methyl N-[3-(6,7-dihydro-6-β-D-ribofuranosyl-7-thioxothieno[2,3-c]pyridin-4-yl)-2-propyn-1-yl]carbamate

1-[4-C-Azido-5-O-(3-chlorobenzoyl)-2,3-dideoxy-2-fluoro-β-L-erythro-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[(2S,3S,5R)-5-Azido-3-fluorotetrahydro-5-(iodomethyl)-2-furanyl]-2,4(1H,3H)-pyrimidinedione

1-[(2S,3S,5R)-3-Fluorotetrahydro-5-(iodomethyl)-2-furanyl]-2,4(1H,3H)-pyrimidinedione