20307-84-0Relevant articles and documents
The sesquiterpene constituents of the liverwort Preissia quadrata
Koenig, Wilfried A.,Buelow, Nils,Fricke, Christiane,Melching, Stephanie,Rieck, Angela,Muhle, Hermann
, p. 629 - 633 (2007/10/03)
The labile sesquiterpene hydrocarbon germacrene C is the main constituent of a chemotype of the liverworth Preissia quadrata collected in Southern Germany. Its temperature dependent rearrangement to racemic δ- elemene is observed by capillary gas chromatography using cyclodextrins as chiral stationary phases. In addition, the rarely found ent-sesquiterpenes (+)-germacrene D, (+)-trans-β-caryophyllene, (+)-β-caryophylleneoxide, (+)- cubebol and racemic alismol [1β,5α-guaia-6,10(15)-dien-4-ol] were identified an major constituents using spectroscopic methods and enantioselective gas chromatography. Minor constituents are (+)-α-copaene, (+)-δ-selinene, (-)-δ-cadinene, germacrene B and (-)-cascarilladiene (eudesma-5,7-diene).