The development of new types of environmentally safe insecticides has been advantageous to replace toxic and persistent insecticides, which have adverse effects on animals and humans. Our effort in this field was aimed at the synthesis of insect juvenile hormone analogues, juvenoids, nontoxic for warm-blooded animals and fish, which can become advanced compounds in regulating many aspects in insect physiology. Structure modification of juvenoids via juvenogen derivatives (hormonogenic substances) plays an important role in controlling the juvenoid liberation rate in the insect digestive system and can also play an important role in the mode of action toward different arthropod groups, with focus on insect pest species. For that reason, juvenoids were esterified with hexadecanoic, butanoic, and 3-methylbut-2-enoic acids. A total of 12 new compounds with potential insecticidal activity were synthesized and characterized, and the results of biological screening tests on blowflies Neobellieria (Sarcophaga) bullata were presented. Results of the inhibitory activity of the tested compounds on the reproduction of the blowflies were also presented.

Isotope Laboratory Institute of Experimental Botany AS CR Videnska 1083 14220 Prague 4 Czech Republic

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