Browsing Faculty of Science & Technology (FST) by Author "Yenesew, A"
Now showing items 1-20 of 33
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Abdillahi, MM-, Tschanen, W. and Snook, RD Microwave-induced plasma emission spectrometric determination of bromide
Yenesew, A; Chandravanshi, BS; kabede, A (Department of Chemistry, 1985) -
Anthraquinones and pre-anthraquinones from the subterranean stems of three Kenyan aloe species of the saponariae group
Yenesew, A; Midiwo, J. O.; Wanjohi, J. M., (Department of Chemistry, University of Nairobi,, 2011)Some Aloe species are cultivated for their medicinal and cosmetic properties. In this study, the constituents of three Kenyan Aloe species, A. kilifiensis; A. lateritia and A. graminicolla werecharacterized. Anumber of ... -
Anthraquinones of the roots of Pentas micrantha
Endale, M; Ekberg, A; Alao, JP; Akala, HM; Ndakala, A; Sunnerhagen, P; Erdélyi, M; Yenesew, A; Yenesew, Abiy (University of NairobiDepartment of Chemistry, 2012-12)Pentas micrantha is used in the East African indigenous medicine to treat malaria. In the first investigation of this plant, the crude methanol root extract showed moderate antiplasmodial activity against the W2- (3.37 ... -
Anthraquinones, Pre-anthraquinones And Isoeleutherol In The Roots Of Aloe Species
Derese, S; Yenesew, A; Midiwo, JO; Heydenreich; Peter, MG (University of NairobiDepartment of Chemestry, 1994)Comparative TLC analysis of the root extracts of 32 Aloe species showed that chrysophanol, asphodelin, chrysophanol-8-methyl ether, aloechrysone, helminthosporin, aloesaponol III, aloesaponarin I, aloesaponol I, aloesaponarin ... -
Antimicrobial And Anticancer Carvotacetone Derivativesof Sphaeranthus
Yenesew, A (University of NairobiDepartment of Chemestry, 2012) -
Antiplasmodial potential of traditional antimalarial phytotherapy remedies used by the Kwale community of the Kenyan Coast.
Muthaura, CN; Keriko, JM; Mutai, C; Yenesew, A; Gathirwa, JW; Irungu, BN; Nyangacha, R; Mungai, GM; Derese, S (University of Nairobi, 2015-05-20)ETHNOPHARMACOLOGICAL RELEVANCE: In Kenya, 22 million people are at risk of malaria, 70% of them are in rural areas and most of these people use traditional plant based medicines to treat malaria. The aim of the study ... -
Antipyretic and analgesic studies of the ethanalic extract of Teclea nobilis delile
Mascolo, N; Pinto, A; Capasso, F; Yenesew, A; Dagne, E (University of NairobiDepartment of Experimental Pharmacology, University of NaplesDepartment of Chemistry, Addis Ababa UniversityCollege of Biological and Physical Sciences,University of Nairobi, 1998)The crude ethanol extract of the leaves of an African medicinal plant Teclea nobilis has been studied for its antipyretic, analgesic and anti-inflammatory activities. The extract exhibited marked antipyretic and analgesic ... -
Asphodelin and asphodelin glycosides from three Kenyan Aloe species of the Saponariea group
Yenesew, A (University of NairobiDepartment of Chemestry, 2001) -
Bioactive compounds from some Kenyan ethnomedicinal plants: Myrsinaceae, Polygonaceae and Psiadia punctulata
Midiwo, J. Ogweno; Yenesew, A; Juma, BF; Derese, S; Ayoo, JA; Aluoch, AO; Guchu, S (University of NairobiDepartment of Chemistry, University of Nairobi, 2002-10)There are several described medicinal plants in Kenya from a flora of approximately 10,000 members. Strong cross-medical information from the 42 ethnic groups points to the high potential of some of these species. The ... -
Bioactive Substances From Kenyan Ethno-medicinal Plants
Yenesew, A (University of NairobiDepartment of Chemestry, 2001) -
The Chemical Systematics Of The Rutaceae, Subfamily Toddalioideae In Africa
Yenesew, A (University of NairobiDepartment of Chemestry, 1988)A recent investigation of five Ethiopian species of the Rutaceae subfamily Toddalioideae, Teclea nobilis, T. simplicifolia, T. borenensis, Vepris dainellii and V. glomerata has led to the identification of alkaloids of the ... -
Chemistry and Biological Activity of Zanthoxyllum usambarense
Yenesew, A (University of NairobiDepartment of Chemestry, 1999) -
The Chemotaxonomic Value Of Anthraquinones In Asphodelaceae
Derese, S; Yenesew, A; Midiwo, JO; Heydenreich; Peter, MG (University of NairobiDepartment of Chemestry, 1994) -
Common Antimalarial Trees and Shrubs of East Africa
Yenesew, A (University of NairobiDepartment of Chemestry, 2010) -
Contribution to the chemistry of the Asphodelaceae
Yenesew, A (Department of Chemistry, 1993) -
Contribution To The Chemotaxonomy Of The Asphodelaceae
Derese, S; Yenesew, A; Midiwo, JO; Heydenreich; Peter, MG (University of NairobiDepartment of Chemestry, 1993) -
Cytotoxic and antioxidant flemingins g-p from the leaves of flemingia grahamiana
Yenesew, A; Gumula, I; Erdélyi, M; Patrick., A; Omolo, Isaiah Ndiege P S; Omolo, N; Sunnerhagen, P (University of Nairobi, 2014)The known flemingins A-C (1-3) and nine new chalcones, named flemingins G-O (4-12), along with deoxyhomoflemingin (13) and emodin (14) were isolated from a leaf extract of Flemingia grahamiana. The isolated chalcones were ... -
Cytotoxic Quinones from the Roots of Aloe dawei.
Abdissa, N; Induli, M; Fitzpatrick, P; Alao, JP; Sunnerhagen, P; Landberg, G; Yenesew, A; Erdélyi, M (University of Nairobi, 2014-03-17)Seven naphthoquinones and nine anthraquinones were isolated from the roots of Aloe dawei by chromatographic separation. The purified metabolites were identified by NMR and MS analyses. Out of the sixteen quinones, ... -
The first 9-hydroxyhomoisoflav anone, and antiplasmodial chalcones, from the aerial exudates of Polygonum senegalense
Midiwo, JO; Omoto, FM; Yenesew, A; Akala, HM; Wangui, J; Liyala, P; Wasunna, C; Waters, NC (2007)Phytochemical re-examination of the aerial exudates of Polygonum senegalense forma senegalense has resulted in the isolation and ch aracterization of a novel homoisoflavonoid, 5,7- dihydroxy-3-(hydroxy-phenyl-m ... -
Flavonoids from the bark of Erythrina burttii and Erythrina sacleuxii
Yenesew, A (University of NairobiDepartment of Chemestry, 1997)