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Activity of a lipid synthesis inhibitor(spiromesifen) in Culiseta longiareolata(Diptera:Culicidae)

Asian Pacific Journal of Tropical Biomedicine 2017年第12期7卷 1120-1124页

作者： Hayette Bouabida Fouzia Tine-djebbar Samir Tine Noureddine Soltani University of Larbi Tebessi TebessaAlgeria Laboratory of Applied Animal Biology University Badji MokhtarAnnabaAlgeria

Objective: To evaluate the activity of spiromesifen against the most abundant and investigated mosquito species, Culiseta longiareolata Aitken, 1954(Diptera, Culicidae).Methods: Culiseta longiareolata larvae were collected from untreated areas located at Te′bessa(Northeast Algeria). A commercial formulation of spiromesifen(Oberon?240 SC) was tested at different concentrations ranging between 238 and 1 428 mg/L on newly molted fourth-instar larvae under standard laboratory conditions according to Word Health Organization recommendations. The effects were examined on the mortality, the morphometric measurements, two biomarkers(catalase and malondialdehyde), and the biochemical composition of larvae, ***: The compound exhibited insecticidal activity. Moreover, it disturbed growth and several morphological aberrations were observed. It also affected body volume,biomarkers and contents of carbohydrates, lipids and proteins. A marked effect on lipids and malondialdehyde was noted, confirming its primary mode of action on lipid ***: spiromesifen appears less potent than other insecticides tested such as the insect growth disruptors.

关键词： Culiseta longiareolata spiromesifen Toxicity Biochemical composition Biomarkers

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Synthesis and Crystal Structure of Mesityl Acetic Acid 3-Mesityl-2-oxo-1-oxaspiro[4,4]non-3-en-4-yl Ester

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Chinese Journal of Structural Chemistry 2010年第4期29卷 515-518页

作者：周勇徐旭辉程敬丽朱国念赵金浩 Institute of Pesticide and Environmental Toxicology Zhejiang University College of Chemical Engineering and Materials Science Zhejiang University of Technology

The title compound mesityl acetic acid 3-mesityl-2-oxo-1-oxaspiro[4,4]non-3-en-4-yl ester （5, C28H32O4, Mr = 432.56）, as a spiromesifen derivative, has been synthesized by the conden- sation reaction of 2,4,6-trimethylphenylacetic chloride with 4-hydroxyl-3-mesityl-1-oxa-spiro[4,4]- non-3-en-2-one （4）, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 7.9261（7）, b = 8.2802（8）, c = 18.7604（18） , α = 91.576（3）, β = 93.277（2）, γ = 95.306（12）o, V = 1223.3（2） 3, Z = 2, Dc = 1.174 g/cm3, F（000） = 464, μ = 0.077 mm–1, S = 1.001, the final R = 0.0624 and wR = 0.1415 for 2809 observed reflections with I 2σ（I） and 290 variable parameters. The crystal analysis results show that the five-membered cyclopentyl ring displays an envelope conformation with C（25） atom at the flap position, 0.537（3）  out of the mean plane formed by the other four atoms. The dihedral angles between the two benzene and furan rings are 70.0（2） and 80.67（3）o, respectively.

关键词： tetronic acids spiromesifen synthesis crystal structure

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Synthesis and Crystal Structure of 2-Methoxy-benzoic Acid 2-Oxo-3-(2,4,6-trimethyl-phenyl)-1-oxa-spiro[4.4]non-3-en-4-yl Ester

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Chinese Journal of Structural Chemistry 2010年第9期29卷 1297-1300页

作者：赵金浩季明华孙雅泉程敬丽朱国念 Institute of Pesticide and Environmental Toxicology Zhejiang University Institute of Science Zhejiang Sci-tec University College of Chemical Engineering and Materials Science Zhejiang University of Technology

The new title compound 2-methoxy-benzoic acid 2-oxo-3-（2,4,6-trimethyl-phenyl）-1-oxa-spiro[4.4]non-3-en-4-yl ester（3,C25H26O5） has been synthesized by the condensation reaction of 4-hydroxy-3-（2,4,6-trimethyl-phenyl）-1-oxa-spiro[4.4]non-3-en-2-one（2） with 2-methoxylben-zoyl chloride,and characterized by 1H NMR and MS *** crystal structure was determined by single-crystal X-ray *** crystal is of monoclinic,space group P21/c with a = 10.6945（7）,b = 12.8176（7）,c = 16.4223（10） ,β = 103.5665（17）o,V = 2188.3（2） 3,Z = 4,Dc = 1.234 g/cm3,F（000） = 864.000,μ = 0.085 mm-1,the final R = 0.0520 and wR = 0.1132 for 2732 observed reflections with I 2σ（I）.In the crystal structure,the C（1）-C（2）（1.478 ） bond is significantly shorter than the normal single C-C bond（1.53 ）,suggesting that the carbonyl group on C（1） has formed a conjugated system with a double bond on C（2） and C（12）.

关键词： Δ3-dihydrofuran-2-one spiromesifen synthesis crystal structure biological activities

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Efficacy of Acaricides alone and in Combination with Propiconozole against Rice Panicle/Sheath Mite, Steneotarsonemus spinki

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Journal of Agricultural Science and Technology(B) 2013年第2期3卷 107-110页

作者： Suresh Daravath Shashi Bhushan Vemuri N.Ramagopal varma Ramesh Bellamkonda Ainp on Pesticide Residues Acharya N.G. Ranga Agricultural University Hyderabad Andhra Pradesh 500030 lndia

Experiments were conducted for chemical management against panicle mite, Steneotarsonemus spinki using seven treatments. Based on the overall performance of chemicals against this pest, spiromesifen ~ propiconazole, diafenthuron ＋ propiconazole and fenpyroxymate alone were found effective against panicle mite and associated grain discolouration. spiromesifen （1 mL）＋ propiconazole （l mL） per litre of water was the best treatment which recorded 24.77% increase in grain yield over control.

关键词： Panicle mite spiromesifen grain discolouration

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