2-(4-(9-(4-(1-aminocyclobutyl)phenyl)-8-(pyridin-2-yl)-9H-purin-2-yl)-1H-pyrazol-1-yl)ethanol

N1-(9-(4-(1-aminocyclobutyl)phenyl)-8-(pyridin-2-yl)-9H-purin-2-yl)ethane-1,2-diamine

(1-{4-[2-(3-hydroxy-pyrrolidin-1-yl)-8-pyridin-2-yl-purin-9-yl]-phenyl}-cyclobutyl)-carbamic acid tert-butyl ester

1-(9-(4-(1-aminocyclobutyl)phenyl)-8-(pyridin-2-yl)-9H-purin-2-yl)pyrrolidin-3-ol

{1-[4-(2,8-diphenyl-purin-9-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester