N-(ethylamino) inulin and preparation and application thereof

A technology of ethyl amino and inulin, which is applied in the field of daily chemicals, can solve the problems of few renewable resources and achieve the effects of low cost, simple synthesis steps and high degree of substitution

Active Publication Date: 2010-09-08
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are very few reports on the utilization of this renewable resource

Method used

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  • N-(ethylamino) inulin and preparation and application thereof
  • N-(ethylamino) inulin and preparation and application thereof
  • N-(ethylamino) inulin and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] N-(ethylamino) inulin is a compound represented by formula (1).

[0021]

[0022] Preparation of N-(ethylamino)inulin: 1.62g of inulin and 1.90g of p-toluenesulfonyl chloride were dissolved in 30mL of nitrogen dimethylformamide, stirred and reacted at room temperature for 10h. After the reaction was finished, the reaction solution was poured into 150 mL of acetone, and a precipitate was precipitated. The precipitate was washed with acetone and tetrahydrofuran, then vacuum freeze-dried, and set aside. The produced product was p-tosylated inulin, 3.2g was obtained, which was dissolved in 22mL of anhydrous ethylenediamine, and reacted at 50°C for 12h. After the reaction was completed, the product was precipitated with 100 mL of acetone, washed with ether and acetone respectively, and vacuum-dried at -50°C to obtain the product. The resulting product is a milky white powder, easily soluble in water, and its infrared spectrogram is shown in figure 1 with figure 2 , w...

Embodiment 2

[0025] The difference from Example 1 is:

[0026] (1) Inulin and lithium bromide were dried under vacuum at 100°C for 8 hours. Take 1.62g of inulin and 0.86g of lithium bromide and add them to 20mL of purified nitrogen-nitrogen dimethylformamide under the protection of nitrogen, heat up until inulin and lithium bromide are completely dissolved, and add 3.5g of N -Bromosuccinimide (NBS) was added to the above reaction solution. Weigh 5.2 g of triphenylphosphine and dissolve it in 10 mL of nitrogen-nitrogen dimethylformamide. This solution was added dropwise to the reaction solution at room temperature. After the reaction solution was reacted at room temperature for 30 minutes, the temperature of the reaction system was raised to 70°C. After the reaction was carried out at 70°C for 3 hours, the reaction solution was poured into 150mL acetone, and a precipitate was precipitated. The precipitate was suction filtered, washed with acetone and tetrahydrofuran, and vacuum freeze-dri...

Embodiment 3

[0029] The difference from Example 1 is that: 1.62g of inulin and 1.90g of p-toluenesulfonyl chloride were dissolved in 30mL of nitrogen-nitrogen dimethylformamide, and the reaction was stirred at room temperature for 6h under the catalysis of 3.7mL of triethylamine. After the reaction was finished, the reaction solution was poured into 150 mL of acetone, and a precipitate was precipitated. The precipitate was washed with acetone and tetrahydrofuran, and then vacuum freeze-dried to obtain 3.0 g of tosylated inulin. The prepared product was dissolved in 27mL of anhydrous ethylenediamine, and reacted at 70°C for 10h. After the reaction was completed, the product was precipitated with 100 mL of acetone, washed with ether and acetone respectively, and vacuum-dried at -50°C to obtain the product.

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Abstract

The invention relates to the field of daily health products and the pharmaceutical industry, in particular to an N-(ethylamino) inulin and preparation and application thereof. The N-(ethylamino) inulin is as shown in a formula (1), wherein the average value of n ranges from 10 to 35. The preparation method comprises the following steps of: halogenating or esterifying the inulin with sulfonic acid chloride; then reacting the inulin for 8 to 24 hours at the temperature of 40 to 90 DEG C; and purifying the inulin to obtain the N-(ethylamino) inulin, wherein the molar weight of the anhydrous ethylenediamine is 30 to 40 times the weight of the inulin. The obtained compound can be used as an antioxidant. The preparation has the advantages of simple synthetic process, easy popularization and easily available needed equipment and raw materials. The product obtained by the invention can be widely applied to the fields of biology, medicament, foods, chemical industry and the like.

Description

technical field [0001] The invention relates to the field of daily chemicals and the pharmaceutical industry, in particular to N-(ethylamino) inulin and its preparation and application. Background technique [0002] Inulin, also known as inulin, is a biological polysaccharide. It is produced by connecting D-fructofuranose molecules with β-(2,1) glycosidic bonds, and the end of each inulin molecule is connected with a glucose residue with α-(1,2) glycosidic bonds. The degree of polymerization is usually 2 to 60, and the average The degree of polymerization is 10. [0003] Inulin widely exists in some microorganisms and fungi in nature. However, it mainly exists in plants, such as Jerusalem artichoke, chicory, salsify, dahlia tubers, etc., among which Jerusalem artichoke is the main source of raw materials for inulin production. Jerusalem artichoke is commonly known as Jerusalem artichoke and ghost ginger. It is native to North America and is a perennial herb plant. It is w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/18A61K31/733A61P39/06
Inventor 郭占勇任剑明董方刘景利
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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