Non-toxic pyrrolizidine alkaloids from Eupatorium semialatum.
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.
Lang
G
Institut für Pharmazeutische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, Geb. 26.23, D-40225, Düsseldorf, Germany
Passreiter
CM
Medinilla
B
Castillo
J
Witte
L