Fig. 5From: Isolation, bioassay and 3D-QSAR analysis of 8-isopentenyl flavonoids from Epimedium sagittatum maxim. as PDE5A inhibitorsDose–response curves of 8-isopentenyl flavonoids compounds in the PDE5A1-inhibitor screening assay. A Icariin. B 2-Oʹʹ-rhamnosylicaridide II. C Baohuoside I. D Epimedin A. E Epimedin B. F Epimedin CBack to article page