A single chalcone and additional rotenoids from Lonchocarpus nicou

Lonchocarpus nicou roots lipophile extract afforded further metabolites (chalcone 2, hydroxyrotenoids 5-6, 7′-nor-6′-oxo-2′,3′-dehydrorotenoids 7-8 and 6′,7′-epoxyrotenoids 9-10) of which 2, 6, and 7 are new and 5, 9, and 10 are reported for the first time in the plant kingdom.