Browsing by Author "Fiseha, Ashebir (PhD)"

Now showing 1 - 4 of 4
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    Phytochemical Investigation on the Stem Bark of Ekebergia Capensis (Sombo)
    (2008-07) Abdissa, Negera; Fiseha, Ashebir (PhD)
    The stem bark of Ekebergia capensis is used traditionally by people of east Wollega for the treatment of Lung TB and its smoke is used to attract Bees if bee hives are activated with it. From the stem bark of Ekebergia capensis, one flavonoid EC-3 was isolated along with two acyclic triterpenoids namely 2, 3, 22, 23- tetrahydroxy- 2, 6, 10, 15, 19, 23- hexamethyl- 6, 10, 14, 18- tetracosatetraene (EC-1) and 2- hydroxymethyl 2, 3, 22, 23- tetrahydroxy-6, 10, 15, 19, 25- pentamethyl- 6, 10, 14, 18- tetracosatetraene (EC-2). The structural determination was accomplished by means of spectroscopic methods (IR, UV, 1D and 2D) NMR.
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    Phytochemical Investigation on Aerial Parts of Verbena Offcinalis
    (2006-07) Alemayehu, Addisu; Fiseha, Ashebir (PhD)
    Chloroform extract of aerial parts of Verbena Officinalis afforded ursolic acid methyl ester (VOD) whereas methanol extract gave Iridoid glycoside; Vebenaline (VOG). The structural elucidation of these compounds were conducted using 1H NMR, 13C NMR, 2D NMR (COSY, HSQC, & HMBC), and UV & IR spectra. Moreover, 1H NMR & proton decupled 13C NMR spectrum of these two compounds matched with the literature values of previously reported.
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    Phytochemical Investigation on the Root of Rumex Abyssinicus
    (Addis Ababa Universty, 2008-07) Zinaye, Bizuayehu; Fiseha, Ashebir (PhD)
    The n-hexane: ethylacetate (7:3) extract of Rumex abyssinicus afforded two known anthraquinone, chrysophanol and Emodin. The root of rumex abyssinicus is traditionally used for the treatment of sexually transmitted disease such as gonorrhea, Lung-TB and leporsy. Structural determination was accomplished by means of IR, UV, 1D and 2D NMR.
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    Phytochemical Investigation on the Stem Bark of Croton Macrostachyus (Bisana)
    (Addis Ababa Universty, 2007-07) Yibralign, Zelalem; Fiseha, Ashebir (PhD)
    The Croton macrostachyus is used for the treatment of malaria, venereal diseases, cough, diabetes, constipation, tape worms and hepatitis. The dichloromethane extract of the stem bark of Croton macrostachyus was afforded two Terpenoids: the compound with full structure which is a triterpenoid (CM-1) and a compound with a partial structure which is a tetratrpenoid (CM-2). Structural determination was accomplished by means of spectroscopic methods (IR, UV, 1D and 2D NMR)