Flavone C-glycosides from Lupinus hartwegii

From the aerial parts of Lupinus hartwegii, two new flavone C-glycosides apigenin-7-O-β-apiofuranosyl-6, 8-di-C-β-glucopyranoside (1) and apigenin-7-O-β-apiofuranosyl-6-C-β-glucopyranosyl-8-C-(6⁗-O-E-feruloyl)- β-glucopyranoside (2) have been isolated together with two known isoflavonoid glucosides genistein-7-O-β-glucopyranoside (3) and genistein-7, 4′-di-O-β-glucopyranoside (4) as well as two known compounds ferulic acid 4-O-β-glucopyranoside (5) and sparteine (6). The structures of the isolated compounds were verified by means of MS and NMR spectral analyses. [Copyright &y& Elsevier]