title: Anhydronium bases from Rauvolfia serpentina.
abstract: Five anhydronium bases were isolated by preparative HPLC from a methanolic extract of Rauvolfia serpentina roots. For the first time 3,4,5,6-tetradehydroyohimbine, 3,4,5,6-tetradehydro-(Z)-geissoschizol, 3,4,5,6-tetradehydrogeissoschizol and 3,4,5,6-tetradehydrogeissoschizine-17-O-beta-D-glucopyranoside were isolated from a natural source. In addition, the well-known anhydronium base serpentine was isolated. The structures of the compounds were determined by 1H and 13C NMR, MS and UV.
authors.affiliation: Institut für Pharmazeutische Chemie, Philipps-Universität Marburg, Marbacher Weg 6, Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Wachsmuth
authors.forename: Rudolf
authors.initials: R
authors.lastname: Matusch
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D011926:Rauwolfia / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D000470:Alkaloids