title: Triterpenoids from pyrethrum tatsienense.
abstract: Two novel and eight known triterpenoids were isolated from alcoholic extract of the whole plant of Pyrethrum tatsienense. The structures of new compounds were elucidated as olean-12-en-3beta,11alpha,16beta-triol-3-O-palmitate (1), ursa-12-en-3beta,11beta,16beta-triol-3-O-palmitate (2) by spectroscopic methods including intensive 2D NMR techniques (H1-H1 COSY, gHMQC, gHMBC) and FAB-MS, and the known compounds were identified on the basis of comparing their NMR data with those of corresponding compounds in the literature.
authors.affiliation: Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, People's Republic of China.
authors.forename: Ai-Mei
authors.initials: AM
authors.lastname: Yang
authors.forename: Xia
authors.initials: X
authors.lastname: Liu
authors.forename: Run-Hua
authors.initials: RH
authors.lastname: Lu
authors.forename: Yan-Ping
authors.initials: YP
authors.lastname: Shi
mesh_terms: D011723:Chrysanthemum cinerariifolium / Q000737:chemistry*; D000431:Ethanol; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D012997:Solvents; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010936:Plant Extracts; D012997:Solvents; D014315:Triterpenes; D000431:Ethanol