Abstract
(±)-Nonactic acid (1) and (±)-homononactic acid (2), the non-antibiotic precursors of macrotetrolide antibiotics, showed significant insecticidal effects (comparable with those of the commercial synthetic pesticide Metathion) onLeptinotarsa decemlineata, Epilachna varivestis andEuproctis chrysorrhoea. Anisoplia austriaca, Aphis fabae andCalandra granaria were less sensitive in this respect. A low acaricidal activity againstTetranychus urticae (not reaching that of the commercial miticide Acarition) was also found. Both1 and2 exhibited growth-stimulating properties for plants.
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