title: Lycopsamine and cumambrin B from Eupatorium maculatum.
abstract: The pyrrolizidine alkaloid (PA) lycopsamine and the guaianolide cumambrin B were isolated from Eupatorium maculatum L. Their structures were elucidated by spectroscopical methods.
authors.affiliation: Pharmazeutisches Institut der Universität, An der Immenburg 4, D-53121 Bonn, Germany. wiedenfeld@uni-bonn.de
authors.forename: H
authors.initials: H
authors.lastname: Wiedenfeld
authors.forename: G
authors.initials: G
authors.lastname: Hösch
authors.forename: E
authors.initials: E
authors.lastname: Roeder
authors.forename: Th
authors.initials: T
authors.lastname: Dingermann
mesh_terms: D002851:Chromatography, High Pressure Liquid; D036602:Eupatorium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011763:Pyrrolizidine Alkaloids / Q000302:isolation & purification*; D012717:Sesquiterpenes / Q000302:isolation & purification*
chemical_list: D011763:Pyrrolizidine Alkaloids; D012717:Sesquiterpenes; C116964:cumambrin B; C018336:indicine