Abstract:
This study was carried out to investigate the flavonoids three
key species in Sudanese traditional medicine: Wetheria indica ,
Cistanch phelypea and Fagonia critica. Three flavonoids ,one
flavonoid from each plant, have been isolated and their tentative
structures have been deduced on the basis of their spectral data.
Furthermore the antimicrobial activity of these plants have been
screened in vitro.
The flavonoids were extracted with 95% ethanol and the crude
extracts were purified by thin layer chromatography . The
structures of the isolated flavonoids have been partially
characterized by some spectral data (UV and 1HNMR). One
flavonoid-compound I- was isolated from the leaves of
Waltheria indica another one-compound II- was isolated from
the leave of Cistanch phelypea , while a third flavonoid compound
III- was isolated from Fagonia critica. ....................
