5-HETEROCYCLYL PYRAZOLO[4,3-D]PYRIMIDIN-7-ONES FOR THE TREATMENT OF MALE ERECTILE DYSFUNCTION

摘要

The invention is directed to novel substituted 5-heterocyclyl pyrazolopyrimidinones and derivatives thereof, their synthesis and their use in treating sexual dysfunction in mammals, especially male erectile dysfunction. Pharmaceutical compositions containing the compounds and methods of using them to treat sexual dysfunction are also described.