germacrene-d and chrysanthenyl-acetate

The chemical composition of the essential oil from the aerial parts of Anacyclus monanthos subsp. cyrtolepidioides (Pomel) Humphries (Asteraceae) growing in a semi-arid region of Algeria was investigated for the first time. The essential oil was obtained by hydrodistillation and fully characterized by gas chromatography-mass spectrometry (GC-MS). A total of 97 compounds were identified. The essential oil was found to be rich in trans-chrysanthenyl acetate (9.8 ± 2.0%), (E)-β-farnesene (7.4 ± 1.5%), germacrene D (6.9 ± 1.3%) and myristicin (4.8 ± 0.8%).

Topics: Algeria; Allylbenzene Derivatives; Asteraceae; Benzyl Compounds; Bridged Bicyclo Compounds; Dioxolanes; Gas Chromatography-Mass Spectrometry; Monoterpenes; Oils, Volatile; Plant Components, Aerial; Pyrogallol; Sesquiterpenes; Sesquiterpenes, Germacrane

The compositional variability of the essential oils of aerial parts of mugwort (Artemisia vulgaris L.), collected from fifteen wild populations in Lithuania is detailed. The most predominant components were davanones (13.8-45.5%, six oils), germacrene D (9.1-30.5%, four oils), 1,8-cineole (16.4%, one oil), camphor (18.9%, one oil), trans-thujone (8.9 and 10.9%, two oils) and cis-chrysanthenyl acetate (10.4%, one oil). To the best of our knowledge, the davanone chemotype for A. vulgaris oils is described for the first time. The toxicity of the mugwort essential oils was determined using brine shrimp (Anemia sp.) assay. LC0 values (10.3-23.1 μg/mL) obtained for the oils after 24 h of exposure revealed that the oils containing appreciable amounts of germacrene D, 1,8-cineole, camphor and davanone were notably toxic.

Topics: Animals; Artemia; Artemisia; Bicyclic Monoterpenes; Bridged Bicyclo Compounds; Camphor; Eucalyptol; Gas Chromatography-Mass Spectrometry; Lithuania; Monoterpenes; Oils, Volatile; Phytochemicals; Plant Oils; Sesquiterpenes; Sesquiterpenes, Germacrane; Toxicity Tests