title: Vibsane-type diterpenes from Taiwanese Viburnum odoratissimum.
abstract: Two new eleven-membered and three new seven-membered vibsane-type diterpenes, named vibsanin L (1) and 14-hydroxyvibsanin F (2), and vibsanin I (3), 14R*,15-epoxyvibsanin C (4) and 14S*,15-epoxyvibsanin C (5) respectively, have been isolated from Viburnum odoratissimum collected in Taiwan. Their structures have been elucidated by spectroscopic analyses and comparison of Nuclear magnetic resonance method (NMR) data with those of the previously reported vibsane-type diterpenes. High performance liquid chromatography (HPLC) analyses indicated that the methanol extract of V. odoratissimum collected in Taiwan contained no neovibsanines, characteristic chemicals occurring in V. awabuki.
authors.affiliation: Institute of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan. miwa-k@ph.bunri-u.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Kubo
authors.forename: I S
authors.initials: IS
authors.lastname: Chen
authors.forename: Y
authors.initials: Y
authors.lastname: Fukuyama
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D004224:Diterpenes