In addition to the rotenoids and flavonoids already reported for the fruits of Amorpha fruticosa, the known compounds tephrosin, 3, and 7 ,4'-demethoxyisoflavone, 7, as well as the new rotenoids (-)-6hydroxy-6a,12a-dehydro-cz-toxicarol, 5, and 3-O-demetylamorphigeni 13, were also isolated from the same material. Chemical evidence for the correct structure of 5,7-dihydroxy-8-geranylflavanone, 8, is given, too.

From the petrol-ether extract of ripe Amorpha fruticosa fruits two rotenoids and one isoflavone have been isolated. The ripe fruits of Amorpha fruticosa L. (Papilionaceae) contain glycerides and essential oil [I], the rotenoid glycoside amor~hine [2] and its analogous [3], as well as small amounts of 7,8-dehydroamorphygenine, amorphygenine, amorphygenol [3], 22,23-dihydroamorphygenine [4] and 6a,l2a-dehydro-a-toxycarol[5]. According to [5] this last compound is responsible for the insecticidal activity of the fruit extracts. Recently the fruits have used in Bulgaria for the production of an aromatic extract (absolute) which has been well accepted in the perfumery industry. This extract was the subject of our investigation.After long storage at +So the absolute deposed fine needle-like crystals (ca. 0.06 %) with IR absorbtion of y-pyrones (1650, 1580, 1515, 1110 cm"), giving on TLC (silica-gel) two spots with similar Rf-values, further separated on a silica-gel column. The less polar compound was identified (m.p., UV, IR, 'H-NMR, MS) as 6a,l2a-dehydro-a-toxycarol, recently isolated from the same plant [5], and the more polar -as 6a,l2a-dehydrodeguelin, found in other members of the Papilionaceae [61.