Abstract
The aerial parts of Helenium donianum afforded in addition to tenulin linifolin A, helenalin, its angelate, microhelenin
C and 11α, 13-dihydrohelenalin senecioate, two isomeric guaianolide glucosides as
well as the glucoside of lavandulol. The structures were elucidated by high field
1H-NMR spectroscopy.