{(S)-2-(4-Butyrylamino-phenyl)-1-[(2S,3S,4R,5R)-5-(6-dimethylamino-purin-9-yl)-4-hydroxy-2-hydroxymethyl-tetrahydro-furan-3-ylcarbamoyl]-ethyl}-carbamic acid tert-butyl ester

6-(dimethylamino)-9-<3'-<(p-nitro-L-phenylalanyl)amino>-3'-deoxy-β-D-ribofuranosyl>purine

(S)-2-Amino-3-(4-amino-phenyl)-N-[(2S,3S,4R,5R)-5-(6-dimethylamino-purin-9-yl)-4-hydroxy-2-hydroxymethyl-tetrahydro-furan-3-yl]-propionamide