Synthesis and insect growth regulating activity of thiosemicarbazones of methyl 2‐pyridyl ketones

Pedersen, Lars‐Erik K.; Svendsen, Axel; Klemmensen, Per D.

doi:10.1002/ps.2780150507

Cited by 10 publications

(2 citation statements)

References 23 publications

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“…Thiosemicarbazones 11-IV, VI-VIII and X (Table 1) were the ones described in Ref. 1. Compounds I, V, IX, XI and XI1 were prepared analogously and exhibited ['HINMR spectra consistent with the proposed structure.…”

Section: Synthesis Of Compoundsmentioning

confidence: 87%

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Chitin biosynthesis inhibition and fungicidal effect of thiosemicarbazones of 2‐formyl‐ and 2‐acetylpyridine, their hydrogenated derivatives and copper complexes thereof

et al. 1990

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Several thiosemicarbazones of 2-formyl-and 2-acetylpyridine dialkylated on N4 and non-alkylated on N 2 were found to be broad-spectrum protectant fungicides with activity particularly against oomycetes. The effect of some of the compounds on chitin biosynthesis was studied, but the low inhibitory activity observed combined with the fungicidal activity spectrumparticularly the high activity against oomycetes-excludes this as their main mode of action. Attempts at enhancing the systemic properties of the compounds by chemical modifications failed.

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Section: Synthesis Of Compoundsmentioning

confidence: 87%

“…Thiosemicarbazones of varied structures, particularly those of 2-formyl-or 2acylpyridines, have been shown to possess a large variety of biological activities (for a review, see Ref. 1…”

Section: Introductionmentioning

confidence: 99%

Chitin biosynthesis inhibition and fungicidal effect of thiosemicarbazones of 2‐formyl‐ and 2‐acetylpyridine, their hydrogenated derivatives and copper complexes thereof

et al. 1990

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Synthesis and insecticidal activities of unsymmetrical bis‐arylalkyl ketones. A new structural concept in pyrethroids

1986

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Seventeen unsymmetrical bis-arylalkyl ketones were synthesised and their insecticidal activities against Musca dornestica, Locusta migratoria, Drosophila rnelanogaster, Dysdercus cingulatus, Aedes aegypti and Tetranychus urticae were tested. The synergistic effect of piperonyl butoxide on the activities of some of the new ketopyrethroids against Musca dornestica was also determined. Several structural variations, including substituent exchange in the aryl moieties, the position of the ketone function and increase or decrease of the length of the carbon chain connecting the two aryl moieties, were made in order to examine the structureactivity relationship. All biological activities were compared with the activity of the ether pyrethroid 2-(4-ethoxyphenyl)-2-methylpropyl 3-phenoxybenzyl ether (MTI-500). 93

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Activity of 2‐(1‐alkenyl)‐3‐hydroxy‐1,4‐naphthoquinones and related compounds against Musca domestica

Jacobsen

Pedersen

1986

Pestic. Sci.

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A series of 2‐(1‐alkenyl)‐3‐hydroxy‐1,4‐naphthoquinones has been prepared and their toxicities assessed against Musca domestica. By comparison with analogous compounds having saturated 2‐alkyl substituents, or unsaturated substituents with an unconjugated double bond (e.g. lapachol), it was demonstrated that the α‐unsaturation of the substituent is responsible for a significant increase in the toxicity. The effect of the compounds against several other insect species and Tetranychus urticae follows completely different patterns.

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Synthesis and insect growth regulating activity of thiosemicarbazones of methyl 2‐pyridyl ketones

Cited by 10 publications

References 23 publications

Chitin biosynthesis inhibition and fungicidal effect of thiosemicarbazones of 2‐formyl‐ and 2‐acetylpyridine, their hydrogenated derivatives and copper complexes thereof

Chitin biosynthesis inhibition and fungicidal effect of thiosemicarbazones of 2‐formyl‐ and 2‐acetylpyridine, their hydrogenated derivatives and copper complexes thereof

Synthesis and insecticidal activities of unsymmetrical bis‐arylalkyl ketones. A new structural concept in pyrethroids

Activity of 2‐(1‐alkenyl)‐3‐hydroxy‐1,4‐naphthoquinones and related compounds against Musca domestica

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