The contents of the pollen lipids of the sun¯ower Helianthus annuus are described. The major component is the seco-triterpene helianyl octanoate, followed by new b-diketones as second major group of compounds.
The contents of the pollen lipids of the sun¯ower Helianthus annuus are described. The major component is the seco-triterpenehelianyl octanoate, followed by new b-diketones as second major group of compounds.