title: Antiplatelet activity of Varthemia iphionoides.
abstract: Aqueous and alcoholic extracts, volatile oil and four flavonoids, xanthomicrol (1), kumatokenin (2), jaceidin (3) and 3, 3'-di-O-methylquercetin (4), isolated from Varthemia iphionoides were investigated for their in vitro anti-platelet activity. Aqueous extract and compounds (1), (2) and (4) showed anti-platelet activity. Volatile oil and the alcoholic extract did not exhibit any anti-platelet activity. Structures of the isolated compounds (1)-(4) were determined by spectroscopic methods (UV, IR, MS, (1)H-NMR).
authors.affiliation: Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman 11942, Jordan.
authors.forename: Fatma U
authors.initials: FU
authors.lastname: Afifi
authors.forename: Talal
authors.initials: T
authors.lastname: Aburjai
mesh_terms: D019659:Asteraceae; D035263:Flowering Tops; D006801:Humans; D020128:Inhibitory Concentration 50; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018515:Plant Leaves; D010938:Plant Oils / Q000737:chemistry / Q000494:pharmacology; D010974:Platelet Aggregation / Q000187:drug effects*; D010975:Platelet Aggregation Inhibitors / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D010936:Plant Extracts; D010938:Plant Oils; D010975:Platelet Aggregation Inhibitors