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J Chem Ecol. 2012 Feb;38(2):157-67. doi: 10.1007/s10886-012-0070-5. Epub 2012 Feb 14.

(R)-desmolactone, a female-produced sex pheromone component of the cerambycid beetle Desmocerus californicus californicus (subfamily Lepturinae).

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Department of Biology, Xavier University, Cincinnati, OH 45207, USA.


We report the identification, synthesis, and field bioassays of a female-produced sex attractant pheromone for the cerambycid beetle Desmocerus californicus californicus Horn. Headspace volatiles from females contained a sex-specific compound, (R)-desmolactone [(4R,9Z)-hexadec-9-en-4-olide], which elicited strong responses from the antennae of adult males in coupled gas chromatography-electroantennogram analyses. Short syntheses of both enantiomers were developed from commercial chiral synthons. In field bioassays, significant numbers of males were collected in traps baited with (R)-desmolactone, whereas the (S)-enantiomer attracted no males. The racemate was less attractive than the pure (R)-enantiomer, indicating some degree of antagonism by the unnatural enantiomer. This compound is the first example of a new structural class of cerambycid pheromones, and is the second pheromone identified for a species in the subfamily Lepturinae.

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