title: [Chemical investigation of triterpenoids from Dichrocephala benthamii].
abstract: The triterpenoids of Dichrocephala benthamii were investigated by means of silica gel, Sephadex LH-20 and semi-preparative HPLC. Nine triterpenoids were isolated from D. benthamii. By analysis of the EI-MS, NMR spectra and comparison to the data reported in literatures, the structures of these compounds were determined as β-amyrin formiate (1), β-amyrin acetate (2), β-amyrenol (3), β-amyrone (4), 3β-hydroxy-olean-11, 13 (18)-diene (5) , Δ12-oleanene (6) , friedelin (7), dammaradienyl acetate (8), epi-friedeband (9), respectively. Compounds 1-8 were isolated for the first time form this genus, compound 9 was isolated for the first time from this plant, whereas β-amyrin formiate (1) was a new natural product.
authors.forename: Bo
authors.initials: B
authors.lastname: Song
authors.forename: Qiu-bo
authors.initials: QB
authors.lastname: Zhang
authors.forename: Meng-hua
authors.initials: MH
authors.lastname: Wang
authors.forename: Xin-hui
authors.initials: XH
authors.lastname: Tian
authors.forename: Hao-li
authors.initials: HL
authors.lastname: Sun
authors.forename: Fu-bao
authors.initials: FB
authors.lastname: Zhang
authors.forename: Zhong-mei
authors.initials: ZM
authors.lastname: Zou
authors.forename: Gang
authors.initials: G
authors.lastname: Ding
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes