Abstract:
In this study the roots of the plant Khaya senegalensis, which is
widely used in the traditional medicine of Sudan, were phytochemically
screened and found to contain flavonoids, tannins, steroids and
glycosides. One of the flavonoids (flavonoid-I) was isolated and purified
by thin-layer chromatography (TLC) on silica gel using the solvent
system butanol: acetic acid: water (5:6:2), from the ethanolic extract.
The behaviour of flavonoid-I under UV-light, and its colour
reactions indicated that it was a flavone.
The flavonoid-I was subjected to spectral studies and the following
structure was proposed on the basis of its IR, UV, 1H-NMR, and MS
spectra.
H
HO
H
A
HO
C2H5O
OC2H5
B
C
OCH3
OCH3
C-CH3
flavonoid-I
