NOVEL 6,7-DIHYDRO-3H-OXAZOLO[3,4-A]PYRAZINE-5,8-DIONE DERIVATIVE COMPOUNDS

摘要

The present invention relates to novel 6,7-dihydro-3H-oxazolo[3,4-a]pyrazine-5,8-dione derivatives or to a mixture thereof. The present invention also relates to pharmaceutical compositions comprising an effective quantity of one of said novel compounds of the invention, as well as to the use of said compounds and/or derivatives as inhibitors of phosphodiesterase enzymes, and to the use of the compounds and/or derivatives for the treatment of erectile dysfunction, disorders and/or conditions which can be treated with tissue relaxants and disorders which can be treated with phosphodiesterase inhibitors, more specifically with PDE-5 inhibitors. Another aim of the present invention is to provide a medicinal drug comprising a therapeutically effective quantity of one of the novel compounds and a method of treatment using novel compounds.