Ficusnotins A–F: Rare diarylbutanoids from the leaves of Ficus nota

Six diarylbutanoids, designated as ficusnotins A–F, with a rare carbon skeleton consisting of two aromatic rings separated by an unbranched C4-chain have been isolated from the leaves of Ficus nota (Blanco) Merr. (Moraceae). The structures were determined on the basis of spectroscopic data, as well as X-ray crystallographic analysis. The isolated compounds were evaluated for their antibacterial activity against Bacillus subtilis.