Flavonoids and steroids from roots of Millettia speciosa

Study on extracts of Millettia speciosa roots collected at Nghe An Province led to the isolation of two flavonoids, pterocarpine (1), quercetin-3-O-[-L-rhamnopyranosyl-(16)--D-glucopyranoside (2) and two steroids, -sitosterol (3), daucosterol (4). Their structure elucidation were determined on the basis of one and two-dimensional NMR and spectrometric methods in combination.