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  • trans-α-bergamotene  (2)
  • 1
    ISSN: 1573-1561
    Keywords: Attractants ; medfly ; Ceratitis capitata ; Diptera ; Tephritidae ; α-copaene ; β-copaene ; β-ylangene ; trans-α-bergamotene ; Angelica seed oil ; Angelica archangelica ; enantiomers ; male lures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two sesquiterpene hydrocarbons, β-copaene and β-ylangene, were isolated from bioactive fractions of angelica seed oil and were shown by field bioassays to be attractive to the male Mediterranean fruit fly. Their relative attractiveness, compared with the(+)-and (−)-α-copaene enantiomers, are: (+)-α-copaene〉angelica β-copaene〉angelica β-ylangene〉(−)-α-copaene. The enantiomer ratios for the two compounds are: β-copaene, 61.4% (+), 38.6% (−); β-ylangene, 91.9% (+), 8.1% (−).trans-α-Bergamotene was also isolated from the same fractions, but in sufficient quantity for bioassay [enantiomer ratio: 95.7% (+), 4.3% (−)].
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 20 (1994), S. 2595-2609 
    ISSN: 1573-1561
    Keywords: Attractants ; medfly ; Ceratitis capitata ; Diptera ; Tephritidae ; male lures ; α-copaene ; β-copaene ; α-ylangene ; β-ylangene ; cyclosativene ; cyclocopacamphene ; longicyclene ; longipinene ; trans-α-bergamotene ; Angelica seed oil ; Angelica archangelica ; enantiomers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Nine sesquiterpenes structurally related to the potent male Mediterranean fruit fly lure (+)-α-copaene were tested in a series of field bioassays to determine their male medfly attractiveness relative to one another and to (+)-α-copaene itself. This study was carried out to determine the relative importance of the various substructure components of the (+)-α-copaene molecule in eliciting an attractive response in the male fly. Tests indicated that any deviation from the three-dimensional structure of (+)-α-copaene leads to major losses in male fly attractancy. The tested analogs fell into two groups, based on their levels of attraction: (+)-α-ylangene, (+)-β-copaene, (+)-β-ylangene, and (-)-α-copaene were found to be somewhat attractive, although much less so than (+)-α-copaene, while (+)-cyclosativene, (+)-cyclocopacamphene, (+)-longicyclene, (+)-longipinene, and (-)-trans-α-bergamotene were not attractive.
    Type of Medium: Electronic Resource
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