Anti-hyperlipidemic sesquiterpenes and new sesquiterpene glycosides from the leaves of artichoke (Cynara scolymus L.): structure requirement and mode of action - Shimoda,H.; Ninomiya,K.; Nishida,N.; Yoshino,T.; Morikawa,T.; Matsuda,H. (Bioorg Med Chem Lett, 2003)