9-{(3AR,4R,6S,6AS)-6-[(ethylamino)carbonyl]-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl}-6-[(2,2-diphenylethyl)amino]-N-{2-[({[1-(2-pyridinyl)-4-piperidinyl]amino}carbonyl)amino]ethyl}-9H-purine-2-carboxamide

imidazole-1-carboxylic acid (3,4,5,6-tetrahydro-2H-[1,2']bipyridinyl-4-yl)-amide

2-chloro-N-(2,2-diphenylethyl)-9-(oxan-2-yl)purin-6-amine

ethyl 6-[(2,2-diphenylethyl)amino]-9-(tetrahydro-2H-pyran-2-yl)-9H-purine-2-carboxylate

N-(2,2-diphenylethyl)-2-(ethoxycarbonyl)-2',3'-O-isopropylidene-adenosine hydrogen sulfate