N2-[10S-(7S,8R,9R-triacetoxy-7,8,9,10-tetrahydrobenzo[a]pyrenyl)]-O6-allyl-3',5'-di-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine

3',5'-bis-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine

6-Allyloxy-9-[(2R,4S,5R)-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-3,9-dihydro-purin-2-one

O6-Allyl-3',5'-O-bis(tert-butyldimethylsilyl)-2'-deoxyguanosine