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4. 5. 2026.
Volatile β-diketones from Helichrysum italicum L. ssp. italicum
ABSTRACT To check the occurrence of new natural β-diketones in Helichrysum italicum L. a series of seven β-diketones was synthesized and used in co-injection experiments to detect their presence in several essential oil and hydrolate samples of wild Helichrysum italicum L. from Corsica, Bosnia and Croatia. Two diketones were identified for the first time in this species: 4-methylheptan-3,5-dione (already known as an insect pheromone), as well as 3-methylhexan-2,4-dione, which has never been reported so far as a natural product.