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    Four isoflavones from seed pods of Millettia dura 

    Yenesew, Abiy; Midiwo, JO; Waterman, Peter G (University of Nairobi, 1996-02)
    Seed pods of Millettia dura yielded four novel isoflavones, which have been characterized as 3-(3,4-dimethoxyphenyl)-6-methoxy-8,8-dimethyl-4H,8H-benzo[1,2-b: 3,4-b′]dipyran-4-one (trivial name, durallone), 6-demethyldurallone, ...
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    6-Methoxycalpogonium Isoflavone A:  A New Isoflavone from the Seed Pods of Millettia dura 

    Yenesew, Abiy; Midiwo, Jacob O; Waterman, Peter G (University of Nairobi, 1997-08)
    From the seed pods of Millettia dura a new isoflavone has been isolated and identified as 3-(4-methoxyphenyl)-6-methoxy-8,8-dimethyl-4H,8H-benzo[1,2-b:3,4-b‘]dipyran-4-one (trivial name 6-methoxycalopogonium isoflavone A). ...
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    Knipholone anthrone from Kniphofia foliosa 

    Dagne, Ermias; Yenesew, Abiy (University of Nairobi, 1993-11)
    A new anthrone named knipholone anthrone was isolated from the stem of Kniphofia foliosa. Its structure was determined by spectral analysis as well as conversion to knipholone.
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    An anthrone, an anthraquinone and two oxanthrones from Kniphofia foliosa 

    Yenesew, Abiy; Müller, Michael; Steglich, Wolfgang; Dagne, Eermias (University of Nairobi, 1994)
    The compounds isoknipholone, isoknipholone anthrone, foliosone and isofoliosone were isolated from the stem of Kniphofia foliosa and their structures determined by spectral analyses. In addition, the known compounds, ...
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    Chemotaxonomic significance of anthraquinones in the roots of asphodeloideae (asphodelaceae) 

    Van Wyk, Ben-Erik; Yenesew, Abiy; Dagne, Ermias (1995)
    The distribution of seven anthraquinones in the roots of some 46 species belonging to the genera Asphodelus, Asphodeline, Bulbine, Bulbinella and Kniphofia was studied by TLC and HPLC, 1,8-Dihydroxyanthraquinones based on ...
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    The chemotaxonomic significance of root anthraquinones and pre-anthraquinones in the genus Lomatophyllum (asphodelaceae) 

    Van Wyk, Ben-Erik; Yenesew, Abiy; Dagne, Ermias (University of Nairobi, 1995-11)
    The roots of seven species of Lomatophyllum were analysed by TLC and HPLC for the presence of nine different anthraquinones and pre-anthraquinones which are all known to be characteristic constituents of the subterranean ...
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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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    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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    Rotenoids, isoflavones and chalcones from the stem bark of Millettia usaramensis subspecies usaramensis 

    Yenesew, Abiy; Midiwo, Jacob O; Waterman, Peter G (University of Nairobi, 1998-01)
    From the stem bark of Millettia usaramensis subsp. usaramensis four new 12a-hydroxyrotenoids with the unusual trans B/C ring junction ((+)-12a-epimillettosin, (+)-usararotenoid-A, (+)-12-dihydrousararotenoid-A, and ...
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    Chemotaxonomic survey of anthraquinones and pre-anthraquinones in roots of Aloe species 

    Van Wyk, Ben-Erik; Yenesew, Abiy; Dagne, Ermias (University of Nairobi, 1995-04)
    Root samples from 172 species of Aloe were surveyed by TLC and HPLC for the presence of anthraquinones and pre-anthraquinones. With the exception of the three species of the series Serrulatae, 1,8-Dihydroxyanthraquinones ...
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    Author
    Yenesew, Abiy (12)
    Dagne, Ermias (6)Midiwo, Jacob O (3)Van Wyk, Ben-Erik (3)Waterman, Peter G (3)Alam, Muzaffar (1)Dagne, Eermias (1)Duddeckt, H (1)Heydenreich, Matthias (1)Midiwo, JO (1)... View MoreSubjectAloe;Alooideae;Asphodelaceae;roots;anthraquinones;pre-anthraquinones;chemotaxonomy (1)Buxus hildebrandtii;Buxaceae;steroidal alkaloids;O(30)-benzoyl-16-deoxybuxidienine-C;30-hydroxybuxamine-A;30-norbuxamine-A;cyclomicrobuxamine;buxamine-A;buxamine-C;cyclobuxoviridine;moenjodaramine;cyclorolfeine. (1)Erythrina sacleuxii;Leguminosae;stem bark;isoflavones;7-demethylrobustigenin;3′-(3-methylbut-2-enyl)biochanin A;5′-(3-methylbut-2-enyl)pratensein;5′-formylpratensein (1)Kniphofia foliosa; Asphodelaceae; stem; anthrone; knipholone anthrone (1)Kniphofia foliosa;Asphodelaceae;stem;anthrone;anthraquinone;oxanthrones;isoknipholone anthrone;isoknipholone;foliosone;isofoliosone. (1)Lomatophyllum;Alooideae;Asphodelaceae;roots;anthraquinones;pre-anthraquinones;chemotaxonomy (1)Millettia dura;Leguminosae;seed pods;isoflavones;durallone;6-demethyldurallone;predurallone;isoerythrinin-A 4′-(3-methylbut-2-enyl) ether;NMR (1)Millettia usaramensis subsp usaramensis;Leguminosae;stem bark;trans-12a-hydroxyrotenoids;α-hydroxydihydrochalcone;isoflavones;cinnamoyl acetate;(+)-12a-epimillettosin;(+)-usararotenoid-A;(+)-12-dihydrousararotenoid-A;(+)-usararotenoid-B;α,4,2′-trihydroxy-4′-O-geranyldihydrochalcone;norisojamicin;4-O-geranylcinnamyl acetate;NMR (1)... View MoreDate Issued1995 (3)1993 (2)1994 (2)1998 (2)1990 (1)1996 (1)1997 (1)Has File(s)No (9)Yes (3)

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