The present study was undertaken to investigate the chemical composition and effectiveness of the essential oil isolated from Echinophora spinosa on different bacterial and fungal species. Chemical analysis (GC/MS) showed that δ3-carene (60,86 %), α-phellandrene (7,12%), p-cymene (6,22 %), myrcene (4,82 %) and β-phellandrene (2,73 %) were dominant components in this oil. Essential oil tested sh...

A novel dihydroxylation-dibromination-dihydroxylation sequence employing in situ protection of diols as boronate esters during the dihydroxylation reactions provides the first enantiomerically pure hexafunctionalised myrcene derivative. This concise four-step asymmetric sequence provides an advanced intermediate for the targeted synthesis of halomon via stereospecific transformations, where bot...

The oil obtained by the hydro-distillation method from the fresh leaves and stems of Anethum sowa L. (Dill) herb was analyzed by GC-MS. Nine compounds were isolated and identified. The major constituents were limonene (83 %), grandisol (7.4 %), bis-1,2-benzenedicarboxylic acid (5.7 %), carvone (1.5 %), thujyl alcohol (0.7 %), βphellandrene (0.6 %), cyclohexane (0.5 %), β-myrcene (0.3 %) and α-t...

the composition of the essential oils of two african (“white” and “yellow”) olibanums available in the commercial market of isfahan (iran) was analyzed by gas chromatography (gc) and gc-mass spectroscopy methods. the main constituents of the “white” olibanum oil were alpha-pinene (34.8%), limonene (15.9%), alphathujene (9.0%), para-cymene (7.0%), myrcene (6.2%) and sabinene (6.0%). major compon...

Ingestion of diet containing streptomycin inhibited the conversion of myrcene, a host plant terpene, to the male-specific pheromones ipsenol and ipsdienol in 1ps paraconfusus. Synthesis of cis-verbenol, which is not a sex-specific pheromone, from the host plant terpene (-)-alpha-pinene and other metabolites from these two terpenes was not inhibited by the antibiotic.

The composition of leaf and rhizome essential oils of Alpinia smithiae that grow wild in the Western Ghats of Kerala (South India) was analysed by gas chromatography. The major components were beta-caryophyllene, sabinene, myrcene and 1,8-cineole in both samples, but variation in the yield of oil as well as the major components between the two plant parts was observed.