(1'R,4'R)-9-<4'-(phosphonomethoxy)cyclopent-2'-enyl>adenine

cis-3(S)-(6-amino-9H-purin-9-yl)-1(R)-N-(N-tert-butyloxycarbonylhydroxamino)cyclopentane

cis-4(R)-(6-amino-9H-purin-9-yl)-1(S)-N-(N-tert-butyloxycarbonylhydroxamino)cyclopent-2-ene

sodium (1R,2S,3S,4R)-4-(6-amino-9H-purin-9-yl)-2,3-dihydroxycyclopentyl sulfate

O-Benzyl-N-[(1S,4R)-4-(6-chloro-purin-9-yl)-cyclopent-2-enyl]-hydroxylamine