Derivative of pyrazolo(3,4-d)pyrimidines exhibiting anticonvulsive and antiallergic/anti-asthmatic activities, process of its preparation and use

摘要

The invention relates to pyrazolo[3,4d]pyrimidin-4(5H)-ones and pyrazolo[3,4-d]pyrimidine-4(5H)-thiones and their tautomers and pharmaceutically acceptable salts, which contain a benzyl radical in the 2-position, processes for their preparation and their use as medicaments, in particular for the treatment of epilepsies of various forms and of allergic/asthmatic diseases.