Spirodepressolide: an unusual bis-norsesquiterpene lactone from Achillea depressa Janka

Milka N Todorova1, Elena T Tsankova, Elena I Mustakerova

  • 1Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria. todorova@orgchm.bas.bg