Bioactive Phenolics from Carthamus lanatus L.

Two flavonoid aglycons, eight flavonoid glycosides, chlorogenic acid and syringin were isolated from aerial parts of Carthamus lanatus. Isorhamnetin 3-O-β-D-glucoside and chlorogenic acid were found for the first time in the genus Carthamus and respectively, quercimeritrin, astragalin, kaempferol 3-O-β-D-sophoroside and syringin in the species. The ethyl acetate fraction of the methanol extract exhibited a higher antioxidant activity than the butanol fraction measured by the α,α-diphenyl-β -picrazylhydrazyl (DPPH) free radical scavenging assay. Cytotoxicity and antioxidant activities of the main constituent, luteolin 7-O-β-D-glucoside, were evaluated

Oxygenated bisabolane fucosides from Carthamus lanatus L.

The aerial parts of Carthamus lanatus (Asteraceae) afforded four new oxygenated bisabolane fucosides, 10-hydroperoxy-bisabola-2,11-diene 7-O-β-D-fucopyranoside, 11-hydroperoxy-bisabola-2,9-diene 7-O-β-D-fucopyranoside, 10-hydroxy-bisabola-2,11-diene 7-O-β-D- fucopyranoside and 11-hydroxy-bisabola-2,9-diene 7-O-β-D-fucopyranoside together with the known compounds α-bisabolol β-D-fucopyranoside, asperuloside, sitosterol 3-O-β-D-glucoside and stigmasterol 3-O-β-D-glucoside. Asperuloside appears to be the second representative of the iridoid monoterpene group found in the plant family Asteraceae, which until recently was considered to lack iridoids. The main constituent α-bisabolol fucoside exhibited noticeable antibacterial and cytotoxic activities

Clastogenic Effect of Carthamus lanatus L. (Asteraceae)

The clastogenic effect of total dichloromethane, methanol and water extracts, four bioactive fractions and three individual constituents from Carthamus lanatus aerial parts were evaluated in mice by bone marrow chromosome aberration assay with mitomycin C as positive control. Significant differences in the percentage of aberrant mitosis of the extracts were observed. The dichloromethane extract exhibited a considerable clastogenic effect and the water extract a negligible one. Different types of chromosome aberrations and time-dependant effects for the active fractions and individual compounds were found

In vitro Anti-inflammatory Effect of Carthamus lanatus L.

The anti-inflammatory activity of four total extracts, their fractions and two main constituents (α-bisabolol β-D-fucopyranoside and luteolin 7-O-glucoside) of Carthamus lanatus L. aerial parts, were assessed in vitro by determining the inhibitory effects on induced human neutrophils. The dichloromethane extract and its water-alcoholic part exhibited the most significant inhibitory effects