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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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)

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

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

[0031] Rhizoma chamaejasmea is collected from the Zoige grassland in Sichuan Province. The fresh Rhizoma chamaejasmea roots collected are washed and dried, then pulverized with a pulverizer to obtain fluffy chamaejasme powder.

[0032] Weigh a certain amount of dry root powder of Chamaecyparis chamaejasme, add 10 times the mass of absolute ethanol, extract and concentrate, and then use different polar solvents n-hexane, chloroform, ethyl acetate, methanol for fractional extraction to obtain different polar extracts , Repeat 3 times until the extraction is sufficient, and combine the same extracts.

[0033] According to the method introduced by Zhang Zongbing, both antifeedant activity and contact activity were used to determine the virulence: first, pick caterpillars from vegetable fields in the suburbs where no pesticides have been applied, and carefully select healthy 3rd-instar indiv...

Example Embodiment

[0042] Example 2 Chromatographic Separation and Purification of Insecticidal Active Substances from St. chamaejasme

[0043] Use thin-layer chromatography silica gel GF254 as the adsorption chromatography stationary phase, and spread the plates on the thin-layer automatic spreader according to the conventional method. Sheet size: 5×10 (cm), silica gel thickness: 0.25mm. Place the paved board in an oven at 105°C for half an hour, and store it in a desiccator for later use after cooling. Use a spotting capillary to spot samples, and use mixed solvents of different compositions and ratios of n-hexane, chloroform, ethyl acetate, dichloromethane, methanol and other solvents as the developing agent to develop the layer. After the layer is developed, it is irradiated with a 254nm ultraviolet analysis lamp and iodine The three methods of powder vapor, sulfuric acid-ethanol color development are combined with detection bands. Select solvent conditions with good separation effect and no tai...

Example Embodiment

[0062] Example 3 Identification of active substance structure

[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 appears as a blue-purple spot on the thin layer of silica gel GF254 under an ultraviolet analysis lamp. The spectral data analysis is as follows:

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

[0066] IR νmax cm -1 : 3400.81 (hydroxyl, blunt peak), 3027.84 (benzene ring hydrogen), 2932.28, 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) is 4 H, δ 2.83 (2H, dm), is 5 H, δ 3.13 (2H, M), is 2 H, δ 3.95 (1H, m) is hydroxyl H, δ4.25 (1H, m) is 3-position H, δ7.19 (1H, m width q...

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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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