3-[3,5-Bis-O-(2,2-dimethyl-1-oxopropyl)-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-(5-O-Phosphono-α-D-arabinofuranosyl)-2,4(1H,3H)-pyrimidinedione

1-[2,3-O-(1-Ethylpropylidene)-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide

1-[5-O-[(1,1-Dimethylethyl)dimethylsilyl]-2,3-O-(1-ethylpropylidene)-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide

N-[2-O-Benzoyl-3,4,6-tris-O-(phenylmethyl)-β-D-glucopyranosyl]-1-[5-O-[(1,1-dimethylethyl)dimethylsilyl]-2,3-O-(1-ethylpropylidene)-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide

6-Imino-3-α-D-ribofuranosyl-1,3-diazabicyclo[2.2.0]hexan-2-one

6-Amino-3-(2,3,5-tri-O-acetyl-α-D-ribofuranosyl)-1,3-diazabicyclo[2.2.0]hex-5-en-2-one

N-[1-(2,3-Di-O-acetyl-5-O-phosphono-α-D-ribofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl]acetamide

4-Amino-1-(2,3-di-O-acetyl-5-O-phosphono-α-D-ribofuranosyl)-2(1H)-pyrimidinone