4H,9H-1,3-Dioxino[4′′,5′′:4′,5′]furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-9-one, 4a,5a,11a,11b-tetrahydro-2,2-dimethyl-, [4aR-(4aα,5aβ,11aβ,11bα)]-

1-α-D-Xylofuranosyl-2,4(1H,3H)-pyrimidinedione

1-α-L-Xylofuranosyl-2,4(1H,3H)-pyrimidinedione

6H-Furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one, 2,3,3a,9a-tetrahydro-3-hydroxy-2-(hydroxymethyl)-, [2R-(2α,3α,3aα,9aα)]-

6H-Furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one, 2,3,3a,9a-tetrahydro-3-hydroxy-2-(hydroxymethyl)-, [2S-(2α,3α,3aα,9aα)]-

Diphosphoric acid, mono[(2,3,3a,9a-tetrahydro-3-hydroxy-6-imino-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-2-yl)methyl] ester, [2R-(2α,3β,3aβ,9aβ)]-

Cytidine, thymidylyl-(3′→5′)-N-benzoyl-2′-deoxy-

1-(5-O-Phosphono-α-D-ribofuranosyl)-1H-imidazol-5-amine

Adenosine, 5′-(dihydrogen phosphoroselenoate)

1-α-D-Ribofuranosyl-1H-imidazol-5-amine

Pyridinium, 3-(aminocarbonyl)-1-[5-O-[hydroxy(phosphonooxy)phosphinyl]-β-D-ribofuranosyl]-, inner salt, P′→5′-ester with 4-oxo-4-[(9-β-D-ribofuranosyl-9H-purin-6-yl)amino]butanoic acid

9-(5-Deoxy-β-D-arabinofuranosyl)-9H-purin-6-amine

Adenine, 9-(2,3-anhydro-5-deoxy-β-D-lyxofuranosyl)-

Adenosine, 2′,3′-anhydro-5′-deoxy-

Adenine, 9-(5-deoxy-β-D-xylofuranosyl)-, 3′-p-toluenesulfonate

9H-Purine-6-thiol, 9-(5-deoxy-β-D-xylofuranosyl)-

Uridine, 2′,3′-O-(1-methylethylidene)-, 5′-carbamate

Uridine, 5′-carbamate

2′,3′-O-(2,4,6-Trinitro-2,4-cyclohexadien-1-ylidene)adenosine 5′-(tetrahydrogen triphosphate)

3H-13,16-Epoxy-17,20-etheno-5,8-methano-5H-imidazo[1,5-c][1,3,6,8,14]oxatetraazacyclooctadecine-3,10,18(7H,19H)-trione, 8,9,11,12,13,14,15,16-octahydro-14-hydroxy-7-(hydroxymethyl)-1,21-dimethyl-, (5R,7S,8R,13R,14S,16R)-