3-[4-[(6,6-dioxo-2-phenyl-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl)amino]phenyl]propanoic acid

ethyl 2-[1-(6,6-dioxo-2-phenyl-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl)-4-piperidyl]acetate

ethyl 2-[4-(6,6-dioxo-2-phenyl-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl)piperazin-1-yl]acetate

tert-butyl 4-[(6,6-dioxo-2-phenyl-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl)amino]piperidine-1-carboxylate

6,6-dioxo-2-phenyl-N-(4-piperidyl)-5,7-dihydrothieno[3,4-d]pyrimidin-4-amine hydrochloride