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  • Title: Sesquiterpenes, nortriterpenes and other constituents from Ligularia tongolensis.
    Author: Han YF, Pan J, Gao K, Jia ZJ.
    Journal: Chem Pharm Bull (Tokyo); 2005 Oct; 53(10):1338-41. PubMed ID: 16204998.
    Abstract:
    Two new eremophilane-type sesquiterpenes, 3beta-(2'-methylbutanoyloxy)-8betaH-eremophil-7(11)-ene-12,8alpha-(14,6alpha)-diolide (1) and 8betaH-eremophil-3,7(11)-diene-12,8alpha(14,6alpha)-diolide (2), and two new norursane-type triterpenes, 2alpha,3beta,19alpha-trihydroxy-28-norurs-12-ene (7) and 2alpha,3alpha,19alpha-trihydroxy-28-norurs-12-ene (8), were isolated from the roots of Ligularia tongolensis, together with nine known compounds. The structures of the new compounds were elucidated by spectroscopic methods.
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