Identification of a Novel 1,2,3,4-Tetrahydrobenzo[<i>b</i>][1,6]naphthyridine Analogue as a Potent Phosphodiesterase 5 Inhibitor with Improved Aqueous Solubility for the Treatment of Alzheimer’s DiseaseJole Fiorito, Donald W. Landry, Agnieszka Staniszewski et al.|Journal of Medicinal Chemistry|2017Cited by 59