title: Triterpenoids from Viburnum suspensum.
abstract: Three triterpenoids, 3-oxo-11,13(18)-oleanadien-28-oic acid, 24-hydroxy-3-oxo-11,13(18)-oleanadien-28-oic acid, 6 beta-hydroxy-3-oxo-11,13(18)-oleanadien-28-oic acid have been isolated together with the previously known virgatic acid, vibsanin B and 3-hydroxyvibsanin E from the leaves of Viburnum suspensum. Their structures were determined by spectroscopic methods and by comparison of their NMR spectral data with those of the previously known 11,13(18)-oleanadien-3 beta-ol.
authors.affiliation: Institute of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan. fukuyama@ph.bunri-u.ac.jp
authors.forename: Yoshiyasu
authors.initials: Y
authors.lastname: Fukuyama
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Minami
authors.forename: Hiromi
authors.initials: H
authors.lastname: Fujii
authors.forename: Miyako
authors.initials: M
authors.lastname: Tajima
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D027925:Viburnum / Q000737:chemistry*
chemical_list: D014315:Triterpenes