Rapid isolation and identification of minor natural products by LC-MS, LC-SPE-NMR and ECD: Isoflavanones, biflavanones and bisdihydrocoumarins from Ormocarpum kirkii

► Structure elucidation of (bi)flavonoids from Ormocarpum kirkii by LC-MS, LC-SPE-NMR. ► Determination of absolute configuration by experimental and calculated ECD spectra. ► Eight compounds were identified for the first time, six were known.