Sesquiterpene Lactones and Flavanones in Scalesia species (Heliantheae: Asteraceae)

Publication Type: Journal contribution
Authors: Spring, O.; Heil, N.; Vogler, B.
Year of publication: 1997
Published in: Phytochemistry
Band/Volume: 44/
Page (from - to): 1369-1373

Abstract

Trichome microsampling and HPLC anal. revealed the presence of sesquiterpene lactones and flavonoids in capitate glandular trichomes from the leaf surface of various species of Scalesia. The paucity in plant material of these plants, endemic to the Galapagos Islands, necessitated the use of micropreparative techniques including LC-NMR and LC-MS for structure elucidation. Leaf exts. of Scalesia baurii ssp. hopkinsii, S. stewartii and a combined sample of several species of the genus afforded two eudesmanolides, four guaianolides, four xanthanolides and three flavanones. This is the first report on the terpenoid chem. of Scalesia and the chemotaxonomic aspects are discussed

Involved institutions

Institute of Chemistry
Bioorganic Chemistry