Sildenafil (VIAGRATM), a potent and selective inhibitor of type 5 cGMP phosphodiesterase with utility for the treatment of male erectile dysfunction

Sildenafil (VIAGRATM), a potent and selective inhibitor of type 5 cGMP phosphodiesterase with utility for the treatment of male erectile dysfunction Substituted Pyrazolopyridopyridazines as Orally Bioavailable Potent and Selective PDE5 Inhibitors:  Potential Agents for Treatment of Erectile Dysfunction Substituted Pyrazolopyridines as Potent and Selective PDE5 Inhibitors:  Potential Agents for Treatment of Erectile Dysfunction N-3-Substituted Imidazoquinazolinones:  Potent and Selective PDE5 Inhibitors as Potential Agents for Treatment of Erectile Dysfunction Discovery of novel pyrazolopyrimidinone analogs as potent inhibitors of phosphodiesterase type-5 The discovery of avanafil for the treatment of erectile dysfunction: A novel pyrimidine-5-carboxamide derivative as a potent and highly selective phosphodiesterase 5 inhibitor Synthesis and Pharmacological Evaluations of Sildenafil Analogues for Treatment of Erectile Dysfunction Imidazo[5,1- f ] [1,2,4] triazin-4(3 H )-ones, a new class of potent PDE 5 inhibitors Pyrimidinylpyrroloquinolones as Highly Potent and Selective PDE5 Inhibitors for Treatment of Erectile Dysfunction Design and synthesis of pyrazolo[3,4-d]pyrimidinone derivatives: Discovery of selective phosphodiesterase-5 inhibitors