Dihydrochalcones and phenanthrene derivatives from Fissistigma bracteolatum

Three dihydrochalcones derivatives 1-3, flavone 4 and phenanthrene derivative 5 were isolated, together with 9 known compounds, from the air-dried root bark of Fissistigma bracteolatum Chatterjee. Their structures were determined by spectroscopic (NMR, MS) and chemical methodologies.