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    A comparative study of anthraquinones in rhizomes of Kniphofia species 

    Yenesew, Abiy; Wondimu, Assefa; Dagne, Ermias (University of Nairobi, 1988-01-14)
    The anthraquinone content of eight kniphofia species was compared using reversed phase HPLC method coupled with a photodiode array detector.
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    A pre-anthraquinone derivative from aloe graminicole 

    Duddeck, H,; Yenesew, Abiy; Ogur, J. A. (2009)
    Atrochrysone and torosachrysone play an important role in the biosynthesis of the common polyketide-derived anthraquinones, such as emodin and physcion [1]. We report here for the first time the occurrence in nature of ...
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    Three steroidal alkaloids from Buxus hildebrandtii 

    Rahman, Atta-ur; Alam, Muzaffar; Nasir, Habib; Dagne, Ermias; Yenesew, Abiy (University of Nairobi, 1990)
    From the leaves of Buxus hildebrandtii three new steroidal alkaloids have been isolated and their structures determined by spectroscopic analysis. The following derived names have been suggested for these new alkaloids: ...
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    The antiplasmodial and radical scavenging activities of flavonoids of Erythrina burttii 

    Yenesew, Abiy; Akala, Hoseah M; Twinomuhwezi, Hannington; Chepkirui, Carolyne; Irungu, Beatrice N; Eyase, Fredrick L; Kamatenesi-Mugisha, Maud; Kiremire, Bernard T; Johnson, Jacob D; Waters, Norman C (2012-08)
    The acetone extract of the root bark of Erythrina burttii showed in vitro antiplasmodial activity against the chloroquine-sensitive (D6) and chloroquine-resistant (W2) strains of Plasmodium falciparum with IC50 values of ...
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    Four isoflavones from the stem bark of erythrina sacleuxii 

    Yenesew, Abiy; Midiwo, Jacob O; Heydenreich, Matthias; Peter, Martin G (University of Nairobi, 1998-09-03)
    From the stem bark of Erythrina sacleuxii four new isoflavones were isolated and characterized as 5,7-dihydroxy-2′,4′,5′-trimethoxyisoflavone (trivial name, 7-demethylrobustigenin), 5,7-dihydroxy-4′-methoxy3′-(3-methylbu ...
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    Op-37 Flavonoids from erythrina burttii and erythrina sacleuxii 

    Martin, G. Peter; Heydenreich, Matthias; Guchu', Salome M.; Midiwo.', Jacob O.; Yenesew, Abiy (2000)
    The root and stem bark of Erythrina species are widely used in traditional medicine for the treatment of microbial infections: In our interest on the phytochemistry of Erythrina species of Kenya, we have isolated several ...
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    Knipholone cyclooxanthrone and an anthraquinone dimer with antiplasmodial activities from the roots of Kniphofia foliosa 

    Abdissa, Negera; Indulia, Martha; Akala, Hoseah M; Heydenreich, Matthias; Midiwo, Jacob O; Ndakala, Albert; Yenesew, Abiy (2013)
    A new phenylanthrone, named knipholone cyclooxanthrone and a dimeric anthraquinone, 10-methoxy-10,7′-(chrysophanol anthrone)-chrysophanol were isolated from the roots of Kniphofia foliosa together with the rare naphthalene ...
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    neo-Clerodane diterpenoids from the leaf exudate of Dodonaea angustifolia 

    Dr. Derese, Solomon; Omosa, Leonidah K.; Midiwo, Jacob O.; Yenesew, Abiy; Peter, Martin G.; Heydenreich., Matthias (University o nairobi, 2010)
    Phytochemical investigation of the leaf surface exudate of Dodonaea angustifolia L.f. yielded two new neo-clerodane diterpenes, neo-clerodan-3,13-dien-16,15:18,19-diolide (mkapwanin) and 15-methoxy-neo-clerodan-3,13-dien ...
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    Antiplasmodial Flavonoids from Erythrina sacleuxii 

    Andayi, Andrew W; Yenesew, Abiy; Derese, Solomon; Midiwo, Jacob O; Gitu, Peter M; Jondiko, Ogoche J I; Akala, Hosea; Liyala, Pamela; Wangui, Julia; Waters, Norman C; Heydenreich, Matthias; Peter, Martin G (University of Nairobi, 2006-02)
    The acetone extracts of the root bark and stem bark of Erythrina sacleuxii showed antiplasmodial activities against the chloroquine-sensitive (D6) and chloroquine-resistant (W2) strains of Plasmodium falciparum. Chromatographic ...
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    Op-38 further diterpenes from the leaf exudate of psiadia punctulata. 

    Waterman, Peter G; Yenesew, Abiy; Midiwo, Jacob O.; Juma, Benard F. (2001)
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    Yenesew, Abiy (53)
    Heydenreich, Matthias (15)Dagne, Ermias (10)Derese, Solomon (10)Midiwo, Jacob O (9)Akala, Hoseah M (6)Waterman, Peter G (6)Erdélyi, Máté (5)Peter, Martin G (5)Erdelyi, Mate (4)... View MoreSubject(S)-Lupinifolin 4´-methyl ether (1)Aedes aegyp (1)African traditional medicine; Dodonaea viscosa; antimicrobial activity; chemosystematics; hopbush; metabolomics; natural products chemistry; phenolics; terpenoids. (1)alkaloids; antimicrobial activity; anticancer activity; canthinones; medicinal plant; phytochemistry; traditional medicine (1)Aloe;Alooideae;Asphodelaceae;roots;anthraquinones;pre-anthraquinones;chemotaxonomy (1)Antibacterial activity; Elongatin; Flavanone; Structure revision; Tephrosia uniflora; β-Hydroxydihydrochalcone. (1)Antileishmanial; Antiplasmodial; Cytotoxicity; Flavanonol; Flavonol; Leguminosae; Mundulea sericea. (1)Antimalarial plants, antiplasmodial, cytotoxicity, marker compound, Maytenus spp., phytomedicine, pristimerin. (1)Antiplasmodial (1)Asteraceae;Aspilia pluriseta;Aspilia mossambicensis;ent-kaurane diterpenoid; X-ray crystalstructure; cytotoxicity (1)... View MoreDate Issued2020 - 2022 (5)2010 - 2019 (28)2000 - 2009 (7)1990 - 1999 (12)1980 - 1989 (5)1972 - 1979 (1)Has File(s)No (36)Yes (22)

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