Guanosine, 3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(hydroxyamino)-N-(2-methyl-1-oxopropyl)-

Guanosine, 3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(hydroxyimino)-N-(2-methyl-1-oxopropyl)-

Guanosine, 3′-deoxy-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(hydroxyimino)-N-(2-methyl-1-oxopropyl)-

Guanosine, 2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-, 3′-(1,1-dimethylethyl carbonate)

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