Flavonoids and pharmacology activity of vernonia galamensis ssp. galamensis var. petitiana M. Gillbert

ABSTRACT

Six main flavonoids [quercetin, quercetin 3-0-beta-D-glucoside, quercetin 3-0-beta-D-galactoside, isorhamnetin 7-alpha-L-rhamnoside isorhamnetin 3-0-alpha-L-rhamnosyl [1-6] beta-D-glucopyranoside, isorhamnetin 3-0-beta-D-apio-furanosyl [1-2] beta-D- galactopyranoside] were isolated from the alcoholic extract of Vernonia galamensis ssp. Galemensis var. Petitiana [A. Rich] M. Gilbert [Compositeae]. Their identities were established by 1H and 13C-NMR. A quantitative estimation of the total flavonoids in the alcoholic extract by spectrophotometric method was also accomplished. The pharmacological activity of the extract showed a remarkable antiulcerogenic activity