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    C-methylated and C-prenylatedisoflavonoids from rootextract of Desmodiumuncinatum

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    Date
    2007
    Author
    Guchu, Salome M.
    Yenesew, Abiy
    Muniru, Tsanuo K.
    Gikonyo, Nicholas K.
    Pickett, John A.
    Hooper, Antony M.
    Hassannali, Ahmed
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    Abstract
    A pterocarpan, 1,9-dihydroxy-3-methoxy-2-methylpterocarpan (named uncinacarpan) and two isoflavanones, 5,7-dihydroxy-2′,3′,4′-trimethoxy-6-(3-methylbut-2-enyl)isoflavanone (named uncinanone D) and 5,4′-dihydroxy-7,2′-dimethoxy-6-methylisoflavanone (named uncinanone E), were isolated from the CH2Cl2rootextract of Desmodiumuncinatum (Jacq.) DC and characterised by spectroscopic methods. In addition, a rare pterocarpan edudiol and two known abietane diterpenes, 7-oxo-15-hydroxydehydroabietic acid and 7-hydroxycallitrisic acid were identified. The fraction of the rootextract that was analysed induced germination of Striga hermonthica seeds, but none of the isolated compounds showed this activity.
    URI
    http://hdl.handle.net/123456789/340
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