1 PUX 8-benzo[1,3]dioxol-,5-ylmethyl-9-butyl-2-fluoro-9h-purin-6-ylamine 1.000 2 PU6 8-benzo[1,3]dioxol-,5-ylmethyl-9-butyl-9h- 0.960 3 DZ8 2-fluoro-8-[(6-iodo-1,3-benzodioxol-5-yl)methyl]-9-[3-(isopropylamino)propyl]-9h-purin-6-amine 0.800 4 PU4 9-butyl-8-(4-methoxybenzyl)-9h-purin-6-amine 0.778 5 PU5 9-butyl-8-(3-methoxybenzyl)-9h-purin-6-amine 0.778 6 PU0 9-butyl-8-(2,5-dimethoxy-benzyl)-2-fluoro-9h-purin-6-ylamine 0.759 7 PUZ 8-(2,5-dimethoxy-benzyl)-2-fluoro-9-pent-9h-purin-6-ylamine 0.733 8 PU7 9-butyl-8-(2,5-dimethoxy-benzyl)-9h-purin-6-ylamine 0.724