New Antibacterial Isoflavone Glycoside From Flowers of Artemisia Absinthium Linn

Chemical investigation of flowers of Artemisia absinthium Linn., resulted in the isolation of a new isoflavone glycoside 7, 4′-dihydroxy-6-methoxyisoflavone-7-O-α-L-rhamnopyranosyl-(1→4)-O-β-D-xylopyranosyl-4′-O-β-D-glucopyranoside (1) alongwith four known compounds α-spinasterol (2), oleanolic acid (3), apigenin-7-O-glucoside (4) and hispidulin (5). Structure of the new compound was elucidated by various colour reactions, spectral analysis and chemical degradations. Compound 1 showed significant antibacterial activity.