FLAVONOIDS AND ISOFLAVONOIDS FROM TEPHROSIA FULVINERVIS AND TEPHROSIA PENTAPHYLLA

Article abstract of DOI:10.1016/0031-9422(89)80308-5

From the roots, leaves and pods of Tephrosia pentaphylla three new 6-oxygenated rotenoids (dihydrostemonal, 9-demethyldihydrostemonal and 6-acetoxydihydrostemonal) were isolated and characterized.In addition six known rotenoids (villosin, sumatrol, rotenone, cis-12a-hydroxyrotenone, 6-hydroxyrotenone and α-toxicarol) and the flavanone obovatin were obtained.A similar analysis of the roots of T. fulvinervis yielded only known rotenoids (α-toxicarol, deguelin, munduserone, cis-12a-hydroxymunduserone) and the common pterocarpan (-)-maackiain. Key Word Index Tephrosia fulvinervis; T. pentaphylla; Papilionoideae; Leguminosae; isoflavone derivatives; rotenoids.