title: Oleanane-type triterpenes from the flowers and roots of Saussurea muliensis.
abstract: Six new oleanane-type triterpenes (1- 6), along with five known compounds, were isolated from the flowers and roots of Saussurea muliensis. On the basis of spectroscopic methods, with special emphasis on 1D and 2D NMR techniques, the structures of the new compounds were characterized as 3beta,22alpha-dihydroxyolean-12-en-30-oic acid (1), 3alpha-(E)-caffeoyloxyolean-12-en-30-oic acid (2), 3alpha-(E)-coumaroyloxyolean-12-en-30-oic acid (3), 3alpha,22alpha-diacetoxy-20beta,21alpha,29-trihydroxy-30-norolean-12-ene (4), 3alpha,22alpha-diacetoxy-21alpha,29-dihydroxy-20beta-methoxy-30-norolean-12-ene (5), and 3alpha,22alpha-diacetoxy-20beta,21alpha-dihydroxy-29-palmityloxy-30-norolean-12-ene (6). The isolated compounds (1- 6) were not active against Staphylococcus aureus, Escherichia coli, Bacillus cereus, and Candida albicans.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, PR China.
authors.forename: Chun-Mei
authors.initials: CM
authors.lastname: Liu
authors.forename: He-Xiang
authors.initials: HX
authors.lastname: Wang
authors.forename: Shi-Lei
authors.initials: SL
authors.lastname: Wei
authors.forename: Kun
authors.initials: K
authors.lastname: Gao
mesh_terms: D001409:Bacillus cereus / Q000187:drug effects; D002176:Candida albicans / Q000187:drug effects; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects; D035264:Flowers / Q000737:chemistry; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry; D030441:Saussurea / Q000737:chemistry*; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D004365:Drugs, Chinese Herbal; D009828:Oleanolic Acid