title: Sesquineolignans and other constituents from the seeds of Joannesia princeps.
abstract: From the methanolic extract of the seeds of the Brazilian Joannesia princeps 3,3'-bisdemethylpinoresinol and six new sesquineolignans were isolated besides the known neolignans americanol A, isoamericanol A and isoamericanin A which were found to be the major constituents. A method was developed to distinguish americanol- from isoamericanol-type compounds spectroscopically.
authors.affiliation: Department of Pharmaceutical Chemistry, Institute of Pharmacy and Food Chemistry, University of Erlangen, Schuhstr 19, D-91052, Erlangen, Germany. waibel@pharmazie.uni-erlangen.de
authors.forename: Reiner
authors.initials: R
authors.lastname: Waibel
authors.forename: Gerd
authors.initials: G
authors.lastname: Benirschke
authors.forename: Monika
authors.initials: M
authors.lastname: Benirschke
authors.forename: Hans
authors.initials: H
authors.lastname: Achenbach
mesh_terms: D004146:Dioxanes / Q000737:chemistry / Q000302:isolation & purification; D004147:Dioxins / Q000737:chemistry / Q000302:isolation & purification; D019665:Euphorbiaceae / Q000737:chemistry* / Q000145:classification; D007536:Isomerism; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification; D019906:Nuclear Magnetic Resonance, Biomolecular; D012639:Seeds / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004146:Dioxanes; D004147:Dioxins; D017705:Lignans; C055021:americanin A; C074373:americanol A