PMID- 10552436 OWN - NLM STAT- MEDLINE DCOM- 20000821 LR - 20190723 IS - 0021-8561 (Print) IS - 0021-8561 (Linking) VI - 47 IP - 3 DP - 1999 Mar TI - Reduction of Carpophilus freemani dobson (Coleoptera: nitidulidae) aggregation pheromone response by synthetic analogues. PG - 1189-95 AB - Analogues of (2E,4E,6E)-5-ethyl-3-methyl-2,4,6-nonatriene, the major component of the aggregation pheromone of Carpophilus freemani Dobson (Coleoptera: Nitidulidae), were synthesized and the potency of these compounds in suppressing the response of C. freemani to its pheromone in a wind tunnel bioassay was determined. The most potent compounds reduced behavioral response to pheromone 83-96% when the inhibitors were present in 10-fold excess. These compounds are (1Z, 3E,5E)-1-methoxy-3-ethyl-5-methyl-1,3,5-heptatriene, (1E,3E, 5E)-1-cyclopropyl-3-ethyl-5-methyl-1,3,5-heptatriene, and (1Z,3E, 5E)-1-cyclopropyl-3-ethyl-5-methyl-1,3,5-heptatriene. In the presence of fermenting bread dough (a pheromone synergist), the most potent inhibitory compound, (1Z,3E, 5E)-1-cyclopropyl-3-ethyl-5-methyl-1,3,5-heptatriene, was less effective in reducing mean landings (69% vs 99%) than when dough was absent. This inhibitory compound causes a reduction of response to pheromone but does not cause a reduction of response to fermenting food-type volatiles such as fermenting bread dough. Analogues of pheromones that strongly reduce response to pheromones by insects might be useful as biochemical probes to study the pharmacophoric (three-dimensional structure) requirements for pheromone perception. FAU - Petroski, R J AU - Petroski RJ AD - USDA, REE, Agricultural Research Service, National Center for Agricultural Utilization Research, Bioactive Agents Research and Analytical Support Units, 1815 North University Street, Peoria, Illinois 61604, USA. petrosrj@mail.ncaur.usda.gov FAU - Weisleder, D AU - Weisleder D LA - eng PT - Journal Article PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (4,8-dimethyl-1,3,7-nonatriene) RN - 0 (Pheromones) RN - 0 (Terpenes) SB - IM MH - Animals MH - Biological Assay MH - Bread MH - *Coleoptera MH - Fermentation MH - Models, Molecular MH - Molecular Conformation MH - Pheromones/chemical synthesis/*chemistry/*pharmacology MH - Structure-Activity Relationship MH - Terpenes/chemical synthesis/*chemistry/pharmacology EDAT- 1999/12/20 09:00 MHDA- 2000/08/29 11:01 CRDT- 1999/12/20 09:00 PHST- 1999/12/20 09:00 [pubmed] PHST- 2000/08/29 11:01 [medline] PHST- 1999/12/20 09:00 [entrez] AID - jf9809378 [pii] AID - 10.1021/jf9809378 [doi] PST - ppublish SO - J Agric Food Chem. 1999 Mar;47(3):1189-95. doi: 10.1021/jf9809378.