bisabolol and beta-pinene

A study on the volatile oil of Ferula behboudiana by gas chromatography and gas chromatography-mass spectrometry showed the presence of 27 compounds. Two disulphide derivatives, 1-sec-butyl-2-[(E)-3-(methylthio) prop-1-enyl] disulphane (1) and 1-sec-butyl-2-[(Z)-3-(methylthio)prop-1-enyl] disulphane (2) (59.4%), were isolated from the oil by thin layer chromatography and their structures were elucidated by spectroscopic techniques. Glubolol (12.5%), α-pinene (8.8%), α-bisabolol (6.1%) and β-pinene (3.9%) were the other major compounds.

Topics: Bicyclic Monoterpenes; Bridged Bicyclo Compounds; Chromatography, Gas; Chromatography, Thin Layer; Disulfides; Ferula; Gas Chromatography-Mass Spectrometry; Molecular Structure; Monocyclic Sesquiterpenes; Monoterpenes; Oils, Volatile; Sesquiterpenes

Sideritis italica (Miller) Greuter et Burdet (Lamiaceae), widely used in ethnopharmacological medicine, occurs in Southern Italy and Sicily. The phytochemical composition of the essential oils of S. italica flowers and leaves, harvested in Piano Battaglia (Sicily), was analysed by GC and GC-MS. Of the 51 compounds, 43 in the oil from flowers and 29 in the oil from leaves were identified. Kaur-15-ene (20.0%) was recognised as the main constituent of the oil from flowers, together with beta-cubebene (12.1%), beta-pinene (8.5%), (Z)-nuciferol (6.5%), tricyclene (4.5%) and alpha-bisabolol (4.0%). In the oil from leaves, p-methoxyacetophenone (26.0%) prevailed, as did hexadecanoic acid (21.3%), followed by nonanal (4.8%), alpha-bisabolol (4.5%) and beta-cubebene (4.7%).

Topics: Bicyclic Monoterpenes; Bridged Bicyclo Compounds; Chromatography, Gas; Flowers; Gas Chromatography-Mass Spectrometry; Lamiaceae; Monocyclic Sesquiterpenes; Monoterpenes; Oils, Volatile; Palmitates; Plant Leaves; Sesquiterpenes; Tea