Pyrazolopyrimidinone compound and imidazo triazone compound for treating erectile dysfunction

摘要

Disclosed are selective phosphodiesterase inhibitor compounds shown in formula (I) or (II) for treating Erectile Dysfunction, the pharmaceutically acceptable salts and configurational isomers thereof. In the formula, the substituents R¹, R², R³, R⁴ and R⁵ are defined as in the specification. Also disclosed are methods for preparing same, and a medical composition comprising compounds of formula (I) or (II), and the use of these compounds for preparing a drug treating or preventing male Erectile Dysfunction.