Karl Michaelis

Pheromone-XLII. 1,3,6,9-nonadecatetraen, das sexualpheromon des frostspanners operophtera brumata (geometridae).

Abstract By means of GC and GCMS analysis and electrophysiological investigations ( z 3, z 6, z 9)-1,3,6,9-nonadecatetrane was identified as sex pheromone of the winter moth O . brumata , and prepared by stereoselective synthesis methods.

Pheromone XXX. Identifizierung eines neuartigen Pheromonkomplexes aus der Graseule Scotia exclamationis (Lepidoptera).

Zusammenfassung Mittels Gaschromatographie und GC-Massenspektrometrie wurden (Z)-5-Tetradecenylacetat und (Z)-9-Tetradecenylacetat als Pheromonkomplex bei der Graseule identifiziert.

The Composition of Terpene Hydrocarbons in the Essential Oils from Leaves of Four Cistus Species

Abstract The hydrocarbon fractions of the essential oils from leaves of Cistus ladanifer, C. palhinhae, C. laurifolius and C. monspeliensis were analysed by GLC and GCMS techniques.

Über die Komponenten des atherischen Öls aus Estragon (Artemisia dracunculus L.)

Summary30 compounds could be identified in the essential oil of tarragon (Artemisia dracunculus L.). The main components were sabinene, methyl eugenol, estragol and elemicine. The content of essential oil per unit dry weight had a characteristic seasonal dependence.ZusammenfassungIm ätherischen Öl des Estragons (Artemisia dracunculus L.) wurden 30 Einzelkomponenten identifiziert. Als Hauptkomponenten fanden sich Sabinen, Methyleugenol, Estragol und Elemicin. Der Gehalt an ätherschm Öl zeigte eine charakteristische jahreszeitliche Abhängigkeit.

Das ätherische Öl aus Blüten von Artemisia vulgaris L. / On the Essential Oil Components from Blossoms of Artemisia vulgaris L.

Abstract By use of GC and GC-MS analysis more than 70 compounds, mainly mono- and sesquiterpenes, were structurally identified from the essential oil from blossoms of Artemisia vulgaris L. A distinct seasonal dependence of oil production was observed.

On the Essential Oil Components from Humulus lupulus L. var. neomexicanus Nels. & Cockerell. I. Contribution

Abstract The essential oil of strobiles from Humulus lupulus L. var. neomexicanus Nels. & Cockerell, grown in the semi-arid climate of Central Colorado, was isolated by steam distillation. A characteristic seasonal dependence of oil production was observed over two vegetation periods. - The main components of the essential oil were identified structurally by means of GC and GC-MS analysis. About 40 different compounds, including monoterpenoic hydrocarbons and alcohols, ketones, methylesters of saturated and unsaturated carboxylic acids were detected. Other sub stances were esters of short chain acids with monoterpene alcohols, plus sesquiterpene hydrocarbons.

Über die Zusammensetzung des ätherischen Öls aus Artemisia dracunculus L. während der Vegetationsperiode / On the Composition of the Essential Oil from Artemisia dracunculus L. during the Vegetation Period

Abstract The main components of the essential oil from Artemisia dracunculus L., as there are sabinene, methyl eugenol, estragol and elemicine, are present in variable quantities depending on the season. The biosynthesis of the phenolic compounds in tarragon is in accordance with the shikimate pathway. Elemicine is likely to be a metabolic product of shikimic acid with no further mono-or bisphenolic intermediates involved.