Structures of three new flavone derivatives, brosimones G, H, and I, from Brosimopsis oblongifolia.

From the roots of BROSIMOPSIS OBLONGIFOLIA three new flavone derivatives, named brosimone G ( 3), H ( 4), and I ( 5) together with the known albanin A ( 1) and E ( 2), were isolated. Antimicrobial activity of the compounds is also reported.