title: Non-toxic pyrrolizidine alkaloids from Eupatorium semialatum.
abstract: The leaves of Eupatorium semialatum were investigated for the occurrence of pyrrolizidine alkaloids. Although this type of alkaloids generally occurs in the Eupatorieae, only unusual non-toxic pyrrolizidines of the tussilagin type were identified. All compounds are methyl esters of the corresponding beta-amino acids.
authors: Institut für Pharmazeutische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, Geb. 26.23, D-40225, Düsseldorf, Germany
authors: G
authors: Lang
authors: CM
authors: Passreiter
authors: B
authors: Medinilla
authors: J
authors: Castillo
authors: L
authors: Witte