1,5-DIHYDRO-4H-PYRAZOLO 3,4-D PYRIMIDIN-4-ONES AND 1,5-DIHYDRO-4H-PYRAZOLO 4,3-C PYRIDIN-4-ONES AS PDE1 INHIBITORS

摘要

The present invention provides 1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-ones and 1,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-ones of formula (I) as PDE1 inhibitors and their use as a medicament, in particular for the treatment of neurodegenerative disorders and psychiatric disorders.