ITALICENE AND ISOITALICENE, NOVEL SESQUITERPENE HYDROCARBONS FROM HELICHRYSUM OIL

novel aromatic sesquiterpene from the sponge halichondria

Chemical composition and biological activity of the essential oil from Helichrysum microphyllum Cambess. ssp. tyrrhenicum Bacch., Brullo e Giusso growing in La Maddalena Archipelago, Sardinia.

Helichrysum microphyllum Cambess. subsp. tyrrhenicum Bacch., Brullo e Giusso (Asteraceae), previously known as Helichrysum italicum ssp. microphyllum (Willd.) Nyman, is one of the many endemic species growing in Sardinia, Corsica and Balearic Islands. In the present work the composition of the essential oil obtained from a population of H. microphyllum ssp. thyrrenicum growing in a littoral loc...

Dossier – Mineral oil hydrocarbons

Analysis of Helichrysum oligocephalum DC. essential oil

Background and objectives: Helichrysum oligocephalum DC. (Compositae)  is an endemic plant in Iran that has been recommended by Iranian traditional and folk medicine practitioners for gastrointestinal complaints. The plant is rich in essential oil and in the present investigation, the volatile composition of the species has been determined. Methods: The light yellow essential oil from ...

Sesquiterpene Hydrocarbons in Glandular Trichome Exudate of Rosa rugosa Leaves

From glandular trichome o f Rosa rugosa, three major sesquiterpene hydrocarbons [acora3(4),7(15)-diene, carota-4(5),ll(12)-diene (isodaucene) and carota-l,4-diene], and two minor [daucene and acora-3(4),7(8)-diene] were identified. The presence o f these carotadienes, which are possibly precursors o f the corresponding C-14-oxygenated carotanoids, suggested that the formation o f the carotane s...