(R)-(-)-linalyl acetate and (S)-(-)-germacrene D from the leaves of Mexican Bursera linanoe.
The leaf volatile components of Mexican Bursera linanoe were identified as (R)-(-)-linalyl acetate (57.6%; 95.5% ee) and (S)-(-)-germacrene D (39.3%; 100% ee) by solvent extraction and GC-MS and chiral GC analyses. Linalool was previously reported as the major component from the leaves of B. linanoe. However, we believe that this is a decomposition product of linalyl acetate during steam distillation, a common method for extraction of essential oils. The chemically unique blend in the leaves of B. linanoe may act as a chemical barrier against its potential herbivores, Blepharida beetles that have a tendency for attacking chemically similar plants as hosts.
Noge
Koji
K
Department of Entomology, University of Arizona, Tucson, AZ 85721, USA. noge@akita-pu.ac.jp
Shimizu
Nobuhiro
N
Becerra
Judith X
JX
D031233:Bursera / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D007202:Indicators and Reagents; D008800:Mexico; D039821:Monoterpenes / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D045788:Sesquiterpenes, Germacrane / Q000737:chemistry* / Q000302:isolation & purification
D007202:Indicators and Reagents; D039821:Monoterpenes; D045788:Sesquiterpenes, Germacrane; C074463:linalyl acetate; C027259:germacrene D