N-1-{(1R,2S,3S,4R)-2,3-bis(methoxymethoxy)-4-(hydroxymethyl)cyclopentyl}-5'-O-(tert-butyldimethylsilyl)-2',3'-O-isopropylideneadenosine

N1-[(6''-O-phosphoryl)hexyl]-2',3'-O-isopropylidene-5'-O-phosphoryladenosine 5',5''-cyclicpyrophosphate

N-1-{(1R,2S,3R,4R)-2-(methoxymethyloxy)-3-methoxy-4-(hydroxymethyl)cyclopentyl}-5'-O-(tert-butyldimethylsilyl)-2',3'-O-isopropylideneadenosine

N1-[(4''-hydroxy)butyl]-5'-O-[bis(phenylthio)phosphoryl]-2',3'-O-isopropylideneadenosine

Phosphoric acid mono-[2-(2-{9-[(3aR,4R,6R,6aR)-6-(hydroxy-phenylsulfanyl-phosphoryloxymethyl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-6-imino-6,9-dihydro-purin-1-yl}-ethoxy)-ethyl] ester