4-Amino-1-[3-O-benzoyl-5-O-[2-(benzoyloxy)-2-methyl-1-oxopropyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

3-[2,3,5-Tris-O-[(2,2,2-trichloroethoxy)carbonyl]-β-D-ribofuranosyl]-2H-1,3-oxazine-2,6(3H)-dione

3-(2,3,5-Tri-O-acetyl-β-D-ribofuranosyl)-2H-1,3-oxazine-2,6(3H)-dione

9H-Purine-6(1H)-thione, 9-β-D-ribofuranosyl-, 5′-carbamate

1(2H)-Pyrimidinecarboxylic acid, 3-(2-deoxy-β-D-erythro-pentofuranosyl)-5-fluoro-3,6-dihydro-2,6-dioxo-, phenyl ester, 3′-acetate 5′-(phenyl carbonate)

3-(2,3,5-Tri-O-benzoyl-β-D-ribofuranosyl)-2H-1,3-oxazine-2,6(3H)-dione

Thymidine, 5′-carbamate

Uridine, 2′-deoxy-5-fluoro-, 5′-(phenyl carbonate)

Thymidine, 3′-acetate 5′-(phenyl carbonate)

9H-Purine-6-thiol, 9-(2,3-O-isopropylidene-β-D-ribofuranosyl)-, 5′-carbanilate

Inosine, 2′,3′-O-isopropylidene-, 5′-carbamate

9H-Purine-6-thiol, 9-(2,3-O-isopropylidene-β-D-ribofuranosyl)-, 5′-carbamate

9H-Purine-6(1H)-thione, 9-(2,3-O-isopropylidene-β-D-ribofuranosyl)-, 5′-(phenyl carbonate)

Thymidine, 3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-α-hydroxy-α-phenyl-

1(2H)-Pyrimidinebutanoic acid, α-amino-3,6-dihydro-2,6-dioxo-3-(5-O-phosphono-β-D-ribofuranosyl)-, (S)-

Uridine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-(methylthio)-

Uridine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-(trimethylsilyl)-

(2S,5R)-5-(6-Amino-9H-purin-9-yl)-4-azido-2,5-dihydro-2-furanmethanol

4-Amino-1-(2,3-dideoxy-3-fluoro-α-D-erythro-pentofuranosyl)-2(1H)-pyrimidinone

4-Amino-1-(2-chloro-2,3-dideoxy-3-fluoro-α-D-ribofuranosyl)-2(1H)-pyrimidinone