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New mimics of the acetate function in pheromone-based attraction
M Hoskovec1, O Hovorka, B Kalinová
1Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
Bioorganic & Medicinal Chemistry
|March 1, 1996
Summary
Researchers explored Oriental fruit moth pheromone analogues to find insect control methods. Certain analogues, like chloroformate 1b and alken-4-olide 2a, showed significant inhibitory activity, offering potential for pest management strategies.
Area of Science:
- Chemical Ecology
- Insect Behavior
- Organic Synthesis
Background:
- The Oriental fruit moth, Cydia molesta, relies on (Z)-8-dodecenyl acetate as its primary sex pheromone.
- Understanding pheromone-analogue interactions is crucial for developing effective pest control strategies.
Purpose of the Study:
- To synthesize and evaluate novel analogues of (Z)-8-dodecenyl acetate.
- To investigate the structure-activity relationships of pheromone analogues for insect receptor interaction.
- To identify compounds with potential inhibitory activity against Cydia molesta.
Main Methods:
- Synthesis of chloroformate and lactone analogues of (Z)-8-dodecenyl acetate.
- Biological activity assessment using electroantennography (EAG), electrosensillography (ESG), short-range sexual stimulation, and flight-tunnel tests.
- Electrophysiological analysis to determine receptor binding and response.
Main Results:
- Strict structural and electronic requirements were identified for effective pheromone receptor interaction.
- Chloroformate 1b, alken-4-olide 2a, and dodecyl acetate 1c exhibited significant (60-85%) inhibitory activities.
- Electrophysiological data indicated distinct interaction mechanisms for the active analogues.
Conclusions:
- The study identified specific pheromone analogues with potent inhibitory effects on Cydia molesta.
- Different analogues act through distinct mechanisms, including receptor competition and non-electrophysiological pathways.
- These findings provide a basis for designing novel, targeted pest management solutions.