Browsing Faculty of Science & Technology (FST) by Author "Heydenreich, Matthias"

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    • Antimicrobial napthoquinones from the roots of aloe secundiflora 

      Induli, Martha; Cheloti, Michael; Wasuna, Antonina; Wekesa, Ingrid; Wanjohi, John; Byamukama, Robert; Heydenreich, Matthias; Makayoto, Moses; Yenesew, Abiy (University of Nairobi, 2013-12)
      Two new naphthoquinones, 5 - hydroxy - 3,6 - dimethoxy - 2 - methylnaphthalene - 1,4 - dione ( 1 ) and 5,8 - dihydroxy - 3 - methoxy - 2 - methylnaphthalene - 1,4 - dione ( 2 ), were ...

    • Red hot compounds from the red hot poker plants, kniphofia species 

      enesew, Abiy; Achieng, Immaculate; Gebru, Meron; Heydenreich, Matthias; Martin, G. Peter; Dagne, Ermias; Knauer, Michael; Bringmann, Gerhard (University of Nairobi, 2009-08)
      Knipholone, the first 4 - arylanthraquinone was discovered from the stem of Kniphofia foliosa (Asphodelaceae) in 1984 [1]. Since then a number of 4 - arylanthraquinones including knipholone anthrone have been ...

    • Rotenoid derivatives from Kenyan Millettia and Derris species as larvicidal agents 

      Yenesew, Abiy; Kiplagat, John T; Mushibe, Eluid K; Derese, Solomon; Midiwo, Jacob O; Kabaru, JM; Heydenreich, Matthias; Peter, Martin G (Department of Chemistry, University of NairobiDepartment of Zoology, University of Nairobi,, 2000)
      Rotenone (1), one of the most extensively used natural insecticides, was reported to be highly toxic to the 4th instar larvae of Aedes aegypti (Abe et al., 1985). The insecticidal activities of rotenone and some other ...

    • +)-tephrodin: a novel flavone with antiplasmodial activity from tephrosia purpurea 

      Muiva - Mutisya, Lois; Macharia, Bernard; Heydenreich, Matthias; Koch, Andreas; Akala, Hoseah M; Derese, Solomon; Omos, Leonidah K.; Yusuf, Amir O.; [et al.] (University of Nairobi, 2015)
      In our continued search for antiplasmodial agents with unique structures from Tephrosia species, the isolation, characterization and antiplasmodial activity of a novel flavone and three known flavonoids ...