1,5-Dihydro-4H-pyrazolo 3,4-d pyrimidin-4-one and 1,5-dihydro-4H-pyrazolo 4,3-c pyridin-4-one as PDE1 inhibitors

摘要

The present invention relates to 1,5-dihydro-4H-pyrazolo [3,4-d] pyrimidin-4-one of the formula (I) as a PDE1 inhibitor and 1,5-dihydro-4H-pyrazolo [4,3- c) Pyridin-4-ones and their use as medicaments, in particular for the treatment of neurodegenerative and psychiatric disorders. [Chemical formula 1]