Helivypolide G. A novel dimeric bioactive sesquiterpene lactone

Helivypolide G was isolated from leaves of Helianthus annuus L. cv. Stella. In the course of our ongoing research for new allelochemicals from Helianthus annuus, a novel dimeric bioactive sesquiterpene lactone, helivypolide G has been isolated and characterized from the medium polar active fractions of the leaves of cultivar variety Stella. The monomers are connected through carbons C-15 of each unit and an oxygen bridge, forming an enolic oxane ring. © 2004 Elsevier Ltd. All rights reserved.

Keywords

Heliangolide, Helianthus annuus cv. Stella, Helivypolide G, Sesquiterpene dimer, Sesquiterpene lactone, carbon, helivypolide g, monomer, oxygen, plant extract, proton, sesquiterpene lactone, unclassified drug, controlled study, drug activity, drug isolation, helianthus annuus, medicinal plant, nonhuman, plant leaf, proton nuclear magnetic resonance, Helianthus, Helianthus annuus, Stella