N-1-[(1R,2S,3S,4R)-2,3-bis(methoxymethoxy)-4-(hydroxymethyl)cyclopentyl]-5'-O-{bis(phenylsulfanyl)phosphoryl}-2',3'-O-isopropylideneadenosine

N1-[(4''-O-phosphoryl)butyl]-2',3'-O-isopropylidene-5'-O-phosphoryladenosine 5',5''-cyclicpyrophosphate

N1-[(6''-hydroxy)hexyl]-5'-O-[bis(phenylthio)phosphoryl]-2',3'-O-isopropylideneadenosine

Dithiophosphoric acid O-((3aR,4R,6R,6aR)-6-{1-[2-(2-hydroxy-ethoxy)-ethyl]-6-imino-1,6-dihydro-purin-9-yl}-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-ylmethyl) ester S,S'-diphenyl ester