(2009/01/24)
benzyl 3-[9-(tetrahydropyran-2-yl)purin-6-yl]-2-[(tert-butoxycarbonyl)amino]propanoate
benzyl (S)-3-{4-[9-(tetrahydropyran-2-yl)purin-6-yl]phenyl}-2-[(benzyloxycarbonyl)amino]propanoate
benzyl (R)-3-{4-[9-(tetrahydropyran-2-yl)purin-6-yl]phenyl}-2-[(benzyloxycarbonyl)amino]propanoate
6-(benzoyloxymethyl)-9-(tetrahydropyran-2-yl)purine
benzyl (S)-3-{4-[9H-purin-6-yl]phenyl}-2-[(benzyloxycarbonyl)amino]propanoate