1982 Volume 30 Issue 10 Pages 3640-3646
From the fronds of Pteris bella, three new pterosin-type compounds, I, III and XI, were isolated along with pterosins B (VI), C (II), Q (VII) and T (IV), setulosopterosin (X), pterosin C 3-O-β-D-glucoside (IX) and pterosin Q 3-O-β-D-glucoside (VIII). From the fronds of Pteridium aquilinum subsp. wightianum, two new pterosin-type compounds, XVI and XVII, were isolated along with pterosins C (II), D (XVIII), F (XXII), H (XX), I (XXI) and Z (XIX) and astragalin (XXIII). The structures of the new compounds were determined on the basis of chemical and spectral data.