Abstract
A new guaiane-type sesquiterpene glycoside, cynaroside A, seven new ursane-type saponins, cynarasaponins A-G, and three new oleanase-type saponins, cynarasaponins H-J, have been isolated from Cynara cardunculus L., together with a known guaiane-type sesquiterpene glycoside, 11β, 13-dihydrodesacylcynaropicrin-8-β-D-glucoside, and a known oleanane-type saponin, chikusetsusaponin IVa. The structures of the new compounds were established on the basis of chemical and spectral data. This is the first isolation of saponin from Compositae plants.
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