Ribaudo G., Pagano MA., Pavan V., Redaelli M., Zorzan M., Pezzani R., Mucignat-Caretta C., Vendrame T., Bova S., Zagotto G..
Semi-synthetic derivatives of natural isoflavones from Maclura pomifera as a novel class of PDE-5A inhibitors, Fitoterapia, 2015 Sep;105:132-8The results demonstrate that semi-synthetic derivatives of osajin and pomiferin show an inhibitory effect on the isolated enzyme (PDE-5A) that, for some of the compounds, is accompanied by a vasorelaxant activity