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Relevant bibliographies by topics / Insecticidal Activities

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Journal articles

Academic literature on the topic 'Insecticidal Activities'

Author: Grafiati

Published: 18 May 2024

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Journal articles on the topic "Insecticidal Activities"

1

Yang, Shuai, Hongxiang Peng, Jiahong Tang, et al. "Discovery of Novel N-Pyridylpyrazole Thiazole Derivatives as Insecticide Leads." Agronomy 12, no. 10 (2022): 2472. http://dx.doi.org/10.3390/agronomy12102472.

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To develop effective insecticides against Lepidoptera pests, 25 novel N-pyridylpyrazole derivatives containing thiazole moiety were designed and synthesized based on the intermediate derivatization method (IDM). The insecticidal activities of these target compounds against Plutella xylostella (P. xylostella), Spodoptera exigua (S. exigua), and Spodoptera frugiperda (S. frugiperda) were evaluated. Bioassays indicated that compound 7g−7j exhibited good insecticidal activities. Compound 7g showed especially excellent insecticidal activities against P. xylostella, S. exigua, and S. frugiperda with

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2

El-Gaby, Mohamed S. A., Moustafa M. S. Bakry, Modather F. Hussein, et al. "Insecticidal efficacy and structure activity relationship study of some synthesized cyano-benzylidene and bisbenzylidene derivatives against Aphis nerii." Current Chemistry Letters 12, no. 3 (2023): 529–36. http://dx.doi.org/10.5267/j.ccl.2023.3.003.

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In this study, seven cyano-benzylidene and bisbenzylidene derivatives were designed and synthesized. All synthesized compounds were evaluated to determine their insecticidal activities as potential insecticides against nymphs and adults of Aphis nerii. These efforts led to the discovery of compounds 3a-d, 5, 7 and 10 with potent insecticidal activity (LC50 range from 0.0141 to 3.4351ppm). Compound 5 exhibited the highest insecticidal potency with 0.0141ppm. In addition, it indicated that compound 3b is less toxic than benzylidene and other precursors. Therefore, our results suggest that compou

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3

Li, Li Xiu, Ling Yan Ge, Ting Xue, and Xi Hong Li. "Insecticidal Effects of the Insecticide Based on Porous Starch and Cinnamon Oil against Sitophilus zeamais." Advanced Materials Research 160-162 (November 2010): 579–84. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.579.

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We investigated that the bioefficacies of cinnamon oil and insecticide based on the mixture of porous starch and cinnamon oil. They were evaluated for their insecticidal activities and their mortality on adults of Sitophilus zeamais. Fumigant toxicity assayed by hanging in glass jars showed that these chemicals caused significant mortality of the test insect. Cinnamon oil evoked high repellent action and high fumigant toxicity (LD50 = 0.030μL/cm3) against adults of Sitophilus zeamais. The two concentrations of the new insecticide 0.030μL/cm3 (LD50) and 0.040μL/cm3 (the highest) lose their inse

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4

Zhang, Jiwen, Zhaonong Hu, Hua Yang, and Wenjun Wu. "Synthesis and Insecticidal Activities of New Ether-Derivatives of Celangulin-V." Natural Product Communications 5, no. 6 (2010): 1934578X1000500. http://dx.doi.org/10.1177/1934578x1000500602.

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In order to find new biorational pesticides, eight new 6-substituted ether derivatives of Celangulin-V were synthesized. The structures were confirmed by IR, 1H NMR and 13C NMR spectroscopic and HRMS analyses. The insecticidal activities of these compounds were tested against third-instar larvae of Mythimna separata. Four derivatives (b, c, f, g) showed higher insecticidal activities than Celangulin-V, with KD50 values of 135.9, 101.33, 169.0 and 219.2 μg.g-1, respectively. However, two compounds (a, d) showed lower insecticidal activities and two (e, h) no activity. The results suggest that C

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5

Khandelwal, Sanskrati, Prachi Maheshwari, Vikas Jain, and Suresh Chandra Mahajan. "Formulation and Evaluation of Herbal Liquid Insecticide." Journal of Drug Delivery and Therapeutics 13, no. 3 (2023): 43–46. http://dx.doi.org/10.22270/jddt.v13i3.5755.

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Extensive usage of commercially available synthetic pesticides against phytophagous insects has resulted in their bio-accumulation in the environment, leading to a rise in resistance and a decrease in soil biodiversity over time. In addition, 90% of the sprayed pesticides penetrate the different natural resources via runoff, exposing farmers and consumers of agricultural products to serious health risks. As a result, increasing emphasis has been placed on the creation of environmentally benign pesticides/insecticides that would enable an effective pest management system and minimise chronic ex

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6

Li, L., X. Song, Z. Yin, R. Jia, and Y. Zou. "Insecticidal activities and mechanism of extracts from neem leaves against Oxya chinensis." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 71, no. 1 (2019): 1–10. http://dx.doi.org/10.1590/1678-4162-8958.

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ABSTRACT In this study, neem leaves were successively extracted with petroleum ether, 95% ethanol and water and the insecticidal activities of these extracts against Oxya chinensis larvae were measured. The results showed that 95% ethanol extract gave the highest extraction yield and insecticidal activity, and it was further extracted with five different solvents. The petroleum ether extract from the 95% ethanol extract possessed the highest insecticidal activity with median lethal concentration values ranging from 14.93 to 55.66mg/mL. The gas chromatography-mass spectrometer analysis showed t

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7

Zhang, Jiwen, Lihui Cui, Longbo Li, et al. "Synthesis and Insecticidal Activities of Novel Nitrogenous Derivatives of Celangulin-V." Natural Product Communications 9, no. 6 (2014): 1934578X1400900. http://dx.doi.org/10.1177/1934578x1400900603.

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In order to develop new biorational pesticides and clarify the potential structural factors needed for the biological activity of celangulin-V analogues, thirty novel nitrogenous derivatives were designed and synthesized. The single crystal structure of celangulin-V is reported for the first time and provides a more accurate structure than that previously reported. The structures of all the new derivatives were confirmed by either NMR or ESI-MSn analysis. Insecticidal activities of these compounds were tested against the third-instar larvae of Mythimna separata. One derivative (1–6) showed hig

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8

Wang, Wenda, Haihuan Su, Huangyong Li, and Xiufang Cao. "Tetrafluorobenzyl Alcohol-Oriented Novel (S)-Enantiomeric Esters: Synthesis and Structure-Activity Relationship." Current Bioactive Compounds 15, no. 1 (2019): 98–102. http://dx.doi.org/10.2174/1573407213666170221160947.

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Background: Using constantly and widely chemistry insecticides has resulted in a selection burden and favored tolerance development in various insect species. Particularly, pyrethroids are the only one which can be used for net impregnation either ITNs or LLIN as yet, however, the excessive use of pyrethroids has led to many cases of insect resistance in worldwide. Therefore, it is urgent to develop novel insecticides fighting against this sort of resistance. Methods: Based on the preliminary studies, we explored a straightforward highly stereoselective method to achieve the novel chiral ester

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9

Zhang, Jiwen, Zhan Hu, Shengkun Li, Shuding Yang та Wenjun Wu. "Synthesis and Insecticidal Activities of Novel Derivatives of 1β,4α,6α,9α-Tetrahydroxy-2β,12-epoxymethano-β-dihydroagarofuran". Natural Product Communications 8, № 6 (2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800617.

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In order to develop novel biorational pesticides, twelve new ether derivatives of 1β,4α,6α,9α-tetrahydroxy-2β,12-epoxymethano-β-dihydroagarofuran (3) were synthesized. The structure of the important intermediate 3 was confirmed by X-ray crystallography, and the new derivatives (3.1–3.12) were elucidated by IR, 1H NMR, 13 C NMR and 2D NMR spectroscopic and ESI-MS analysis. Insecticidal activities of these derivatives were tested against the third-instar larvae of Mythimna separata. Though most of the derivatives (3.1–3.4, 3.6, 3.8, 3.9–3.12) revealed no obvious activities at the concentration o

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10

D Incao, Marianna P., Neiva Knaak, and Lidia M. Fiuza. "PHYTOCHEMICALS TAKEN FROM PLANTS WITH POTENTIAL IN MANAGEMENT OF SPODOPTERA FRUGIPERDA (LEPIDOPTERA: NOCTUIDAE)." Journal of Biopesticides 06, no. 02 (2013): 182–92. http://dx.doi.org/10.57182/jbiopestic.6.2.182-192.

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ABSTRACT In agriculture, there is a constant search for natural products with biological activities that minimize the environmental impact of various pesticides used such as insecticides. The chemical constituents present in plants have these activities and show promise in fighting pests in agriculture. An approach to the selection of new insecticides that fulfill the requirements of safety, efficacy and selectivity, can be through the study of defense mechanisms of plants. Recent studies have shown the potential insecticide substances and extracts isolated from plants against various insect p

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