Synthesis and biological testing of attractants of the spruce seed moth Cydia Strobilella | Синтез и биологические испытания аттрактантов еловой шишковой листовертки Cydia Strobilella
2013
Prokhorevich, K.N., Belarus State Technological Univ., Minsk (Belarus) | Zvyagintsev, V.B. | Yuzhik, N.V., Belarus State Technological Univ., Minsk (Belarus)
Synthesis and field testing of synthetic attractants of the spruce seed moth (Cydia strobiella L.) is presented in the article. The obtained compounds are the alcohols and their acetates: cis-dodec-8-en-1-ol (1) (Z8-C12:OH), cis-dodec-8-en-1-yl acetate (2) (Z8-12:OAc), trans-dodec-8-en-1-ol (3) (E8-12:OH), trans-dodec-8-en-1-yl acetate (4) (E8-12:OAc). Cis-acetate (2) and cis-alcohol (1) are synthesized in 3 and 4 stages respectively, with the overall yield of 44% and the diastereometric purity 8Z=94%. Trans-acetate (4) and trans-alcohol (3) are synthesized in 3 and 4 stages respectively, with an overall yield of 52% and diastereometric purity 8E=92%. Field tests have stablished that compounds E8-12: OAc and Z8-12: OAc demonstrate the attractive activity. The greatest number of Cydia strobiella species is caught in a trap with an attractant E8-12 OAc in a concentration of 100 mg/dispenser. Compounds E8-12: OAc may be used both in a prognosis of the peak fly activity of insects for the determination of the exact time for protective measures, and in monitoring of number of Cydia strobiella species.
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