N′-[9-[(3aR,4S,6R,6aR)-4-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]hexahydro-2-oxo-3-(phenylmethyl)furo[3,4-d]oxazol-6-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

N′-[9-[(3aR,4S,6R,6aR)-4-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]hexahydro-2-oxo-3-(phenylmethyl)furo[3,4-d]oxazol-6-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

Cytosine, 1-β-L-ribofuranosyl-, cyclic 2′,3′-(hydrogen phosphate)

2-β-L-Ribofuranosyl-1,2,4-triazine-3,5(2H,4H)-dione

2(1H)-Pyrimidinone, 4-methoxy-1-(5-O-trityl-β-L-ribofuranosyl)-

1-[5-O-(Triphenylmethyl)-β-L-ribofuranosyl]-2,4(1H,3H)-pyrimidinedione