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A comparative study of anthraquinones in rhizomes of Kniphofia species
(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.
A pre-anthraquinone derivative from aloe graminicole
(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 ...
Three steroidal alkaloids from Buxus hildebrandtii
(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: ...
The antiplasmodial and radical scavenging activities of flavonoids of Erythrina burttii
(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 ...
Four isoflavones from the stem bark of erythrina sacleuxii
(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 ...
Op-37 Flavonoids from erythrina burttii and erythrina sacleuxii
(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 ...
Knipholone cyclooxanthrone and an anthraquinone dimer with antiplasmodial activities from the roots of Kniphofia foliosa
(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 ...
neo-Clerodane diterpenoids from the leaf exudate of Dodonaea angustifolia
(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 ...
Antiplasmodial Flavonoids from Erythrina sacleuxii
(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 ...