Browsing by Author "Debella Asfaw"

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    Flavonoids of Lupinus albus and Lupinus princei
    (Addis Ababa Universty, 1990-06) Debella Asfaw; Dagne Ermias (PhD)
    This thesis covers the phytochemical investi- gation of two Lupinus species (Lsguminosae), namely L, albus and L. princei. in. 2'-Hydroxydai-- 1 ' ' j : 1 f . i t » , ’ - ’ , , n,e, gP.nus"Lup^n_iJs:< , , ’ ‘ . 5 t ^' 1 - - . i ! L. albus L. known locally as "Gebto" ( Amharic) i9 a plant which grows widely in Gojjam province. Chemical investigation of this plant afforded four known isoflavonoids , namely genistein , 2'- hydroxygenistein , 2* -hydroXydaidzein, dzein is a new record for ’the Vf L # princei Harms loyally * iV.nbvvn ' as "Dc^rgie^ Gerbie" (Oromo) is an indigenous, pTant 'which grows ! ' in Sidamo province. The phyt'ochemical investigation of this plant was carried out for the first time resulting in the isolation of 4 isoflavonoids and a triterpone. The compounds are genistein, 2'-hydro- xygenistein, luteone , 2‘ -hydroxyisolupslbigenin and B-sitosterol , This is the second report of 2'-hydroisolupalbigenin , which was recently ( 1909) discovered to occur in the roots of L. albus. The structures of the isolated compounds were principally deduced by spectroscopic techniques.