ISOFLAVONOIDS FROM SALSOLA-SOMALENSIS

Three new isoflavones, 5,3′-dihydroxy-7,8,2′-trimethoxy isoflavone, 5,3′-dihydroxy-2′-methoxy-6,7-methylenedioxyisoflavone and 5,3′-dihydroxy-6,7,8,2′-tetramethoxyisoflavone, have been isolated and identified from the roots of Salsola somalensis. These are found to possess an unusual 2′,3′-oxygenation pattern. 1H and 13C NMR data are given for the compounds and their methyl ethers. © 1982.