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Activity of the diastereoisomers of 13,23‐dimethylpenta‐triacontane, the sex pheromone of Glossina pallidipes , and comparison with the natural pheromone
Author(s) -
McDOWELL PHILLIP G.,
HASSANALI AHMED,
DRANSFIELD ROBERT
Publication year - 1985
Publication title -
physiological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 57
eISSN - 1365-3032
pISSN - 0307-6962
DOI - 10.1111/j.1365-3032.1985.tb00033.x
Subject(s) - pheromone , diastereomer , biology , bioassay , sex pheromone , stereochemistry , zoology , botany , ecology , chemistry
. All three synthetic diastereoisomers of 13,23‐dimethyl‐pentatriacontane, the pheromone of Glossina pallidipes (Austen), have been tested in the G. pallidipes sex pheromone bioassay, together with one of the four diastereoisomers of 13,17‐dimethylpentatriacontane, originally proposed as a candidate pheromone of G. pallidipes. Of the three isomers of 13,23‐dimethylpentatriacontane only the (13R,23S) isomer was active with an ED‐50 of 4.47±1.09/μg (mean±SD). The (13R,17R)‐13,17‐dimethylpentatriacontane was inactive. The diastereo‐isomeric mixtures of 13,17‐ and 13,23‐dimethylpentatriacontane were active with ED‐50 values of 17.88±1.25/μg and 8.88±1.15μg respectively. The natural pheromone was active with an ED‐50 of 8.07±1.17 μg indicating it to be a diastereoisomeric mixture.