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Pesticide uses of compound 4-hydroxy sesquiterpene propyl ester

A technology of semiterpene propyl esters and compounds, applied in the fields of application, organic chemistry, animal repellent, etc., can solve the problems of not specifying the use of compounds, and achieve the effects of saving manpower, long validity period, and good solubility

Inactive Publication Date: 2006-10-11
恒拓开源信息科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[Feng Baomin, Pei Yuehu, Han Bing, "Study on the Chemical Constituents of Rhizoma Chamaejasma", Journal of Shenyang Pharmaceutical University, 2000, 17(4), p258-259] disclosed three identified compounds, including compound A 1,5- Diphenyl-3-hydroxy-1-pentanone, but the use of this compound is not indicated

Method used

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  • Pesticide uses of compound 4-hydroxy sesquiterpene propyl ester
  • Pesticide uses of compound 4-hydroxy sesquiterpene propyl ester
  • Pesticide uses of compound 4-hydroxy sesquiterpene propyl ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Preparation and contact activity determination of Daphne chamaejasme extract

[0031] Chamaejasma chamaejasma is collected from Ruoergai Grassland in Sichuan Province. The collected fresh chamaejasma roots are washed, dried, and pulverized with a grinder to obtain fluffy chamaejasma powder.

[0032] Weigh a certain amount of chamaejasma root dry powder, add 10 times the mass of absolute ethanol to soak, extract and concentrate, and then use different polar solvents n-hexane, chloroform, ethyl acetate, methanol for graded extraction to obtain different polar extracts , repeated 3 times until the extraction was complete, and the same extracts were combined.

[0033] According to the method introduced by Zhang Zongbing, the antifeedant activity and contact activity were used to measure the toxicity: first, the cabbage caterpillars were collected in the vegetable fields in the suburbs where no pesticides had been applied, and healthy third-instar individuals with ...

Embodiment 2

[0042] Embodiment 2 Chromatographic separation and purification of Daphne chamaejasme insecticide active substance

[0043] Thin-layer chromatography silica gel GF254 was used as the stationary phase of adsorption chromatography, and plates were plated on a thin-layer automatic plate plater according to conventional methods. Sheet size: 5×10(cm), silica gel thickness: 0.25mm. Put the laid boards into an oven at 105°C for half an hour, and store them in a desiccator after cooling for later use. Use a spotting capillary to spot a sample, use n-hexane, chloroform, ethyl acetate, dichloromethane, methanol and other solvents with different compositions and different proportions of mixed solvents as developing agents, and after developing, irradiate with 254nm ultraviolet analysis lamp and iodine Three methods of powder vapor and sulfuric acid-ethanol color development were combined to detect bands. Choose a solvent with good separation effect and no tailing for reference in colum...

Embodiment 3

[0062] Embodiment 3 active substance structure identification

[0063] Compound A

[0064] Compound A is a light yellow oily substance, easily soluble in organic solvents such as petroleum ether, chloroform, ethyl acetate, etc., and shows blue-purple spots on the thin layer of silica gel GF254 under the ultraviolet analysis lamp. Spectral data analysis is as follows:

[0065] Uv λmax (methanol) nm: 283.0, 309.0 (weak). The weak peak at 309.0nm of the ultraviolet absorption peak is n→π of (carbonyl) * Transition, UV absorption peak 283.0 is π→π * transition.

[0066] IR νmax cm -1 : 3400.81 (hydroxyl, blunt peak), 3027.84 (benzene ring hydrogen), 2930.28, 2858.62 (saturated hydrogen), 1682.26 (carbonyl), 1598.67, 1581.49, 1496.20, 1450.86, 753.90, 699.65 (monosubstituted benzene ring).

[0067] 1 H-NMR (CDCl 3 , 600Hz) δppm: 1.90 (2H, dm) for 4-digit H, δ2.83 (2H, dm), for 5-digit H, δ3.13 (2H, M), for 2-digit H, δ3.95 (1H, m) is hydroxyl H, δ4.25 (1H, m) is 3-position...

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Abstract

The invention provides an extract of radix euphorbiae ebracteolatae of daphnetoxin by skellysolve B and the usage of the further got active compound A and B in pesticide. The target insect is vegetable insect, and it is demonstrated by biological activity test that: when the extract is diluted for 30 times, the corrected mortality of insect is 100% in 72 hours; the activity of contact action of compound A: 1,5-Biphenyl-3-Hydroxy-1-Pentanone is 483.4 mg / l (LC50); and it is 530.3 mg / l (LC50) for compound B: 4-Hydroxy-Sesquiterpene- Propylene-Es ter. The invention lies foundation for producing new pollution-free pesticide with radix euphorbiae ebracteolatae.

Description

[0001] This application is an invention titled Preparation and application of insecticidal active substances in Daphne chamaejasme , the application number is 200510021333.3 , the filing date is July 27, 2005 The divisional application of the invention patent application. technical field [0002] The invention relates to the application of a daphne chamaejasme active substance in pesticides, belonging to the field of pesticides. Background technique [0003] Due to the long-term irrational use of chemical pesticides, many disadvantages have been brought about, such as environmental pollution, direct poisoning of non-target organisms, and easy resistance of pests. In recent years, with the implementation of IPM theory, the development of sustainable development strategies and the improvement of human health requirements, the research and development of biopesticides with good environmental compatibility, safety, low residue and economy have been paid more and more attentio...

Claims

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Application Information

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IPC IPC(8): A01N37/02A01N35/04C07C53/136
Inventor 侯太平肖波张可君陈琳鲁韬
Owner 恒拓开源信息科技股份有限公司
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