Jasmone and linalool

The essential oil composition of Feronia elephantum Correa (family: Rutaceae) was examined by capillary gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS). The analysis revealed the presence of 24 constituents, of which 18 constituents were identified. Trans-anethole (57.73%) and methyl chavicol (37.48%) were the major compounds, while cis-anethole, p-anisaldehyde, (E)-jasmone, methyl eugenol, β-caryophyllene, linalool and (E)-methyl isoeugenol were also present as the minor constituents.

Topics: Acyclic Monoterpenes; Allylbenzene Derivatives; Anisoles; Benzaldehydes; Chromatography, Gas; Cyclopentanes; Eugenol; Gas Chromatography-Mass Spectrometry; Monoterpenes; Oils, Volatile; Oxylipins; Polycyclic Sesquiterpenes; Rutaceae; Sesquiterpenes

Coronatine (1), its synthetic analogs (6-13) and jasmonic acid induced various volatiles in rice leaves. In the range of 0.01-0.1 mM, dihydrocoronatine (7) exhibited 4-687 times higher activity for linalool emission than that of 1. The radioactive derivative of 7, [4,5-3H]-7, was employed to identify the putative coronatine-binding protein in rice leaves. 7 would be a promising candidate for a chemical probe to study cornatine-binding protein related to the jasmonoid and octadecanoid signaling pathway in higher plants. A detailed study of coronatine-binding protein in rice leaves and cell culture with [4,5-3H]-7 is now in progress.

Topics: Acyclic Monoterpenes; Amino Acids; Cyclopentanes; Indenes; Magnetic Resonance Spectroscopy; Monoterpenes; Oryza; Oxylipins; Protein Binding; Stearic Acids

We electrophysiologically investigated the effect of some fragrant compounds in oolong tea on the response of ionotropic gamma-aminobutyric acid (GABA) receptors (GABAA receptors) which were expressed in Xenopus oocytes. Of the tested fragrances in oolong tea, cis-jasmone, jasmine lactone, linalool oxide and methyl jasmonate significantly potentiated the response. Among these, cis-jasmone and methyl jasmonate potently potentiated the response, having a respective dissociation constant of the compound (Kp) and maximum potentiation (Vm) of 0.49 mM and 322% for cis-jasmone, and 0.84 mM and 450% for methyl jasmonate. Inhalation of 0.1% cis-jasmone or methyl jasmonate significantly increased the sleeping time of mice induced by pentobarbital, suggesting that these fragrant compounds were absorbed by the brain and thereby potentiated the GABAA receptor response. Both of these compounds may therefore have a tranquillizing effect on the brain.

Topics: Acetates; Acyclic Monoterpenes; Animals; Cattle; Cyclopentanes; Dose-Response Relationship, Drug; Electrophysiology; Mice; Monoterpenes; Oils, Volatile; Oocytes; Oxylipins; Receptors, GABA-A; Sleep; Tea; Transfection; Xenopus