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

tert-butyl 2-(4-((6,6-dioxido-2-phenyl-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl)amino)piperidin-1-yl)acetate