(2008/06/13)
ethyl (rac)-6-(4-cyanophenyl)-8-methyl-9-[3-(trifluoromethyl)phenyl]-6,9-dihydropyrimido[2,1-f]purine-7-carboxylate
Ethyl (rac)-9-(4-cyanophenyl)-7-methyl-6-[3-(trifluoromethyl)phenyl]-6,9-dihydropyrimido[1,2-e]-purin-8-carboxylate
(rac)-Ethyl 6-(4-cyanophenyl)-8-methyl-6,9-dihydropyrimido[2,1-f]purine-7-carboxylate
(rac)-ethyl 9-(4-cyanophenyl)-7-methyl-6,9-dihydropyrimido[1,2-e]purine-8-carboxylate