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Medicinal use and extraction of cis-ligusticum lactone

A technology of ligustilide and an extraction method, applied in the field of medicinal use of cis-ligustilide, can solve problems such as inability to carry out industrialized production, and achieve the effects of improving blood flow state, high product yield, and resisting angina pectoris

Inactive Publication Date: 2008-06-04
北京九龙制药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The above method not only uses a large amount of highly toxic benzene in the process of extracting and separating cis-ligustilide, but also uses separation methods that are only suitable for laboratory research and cannot be used for industrial production.

Method used

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  • Medicinal use and extraction of cis-ligusticum lactone
  • Medicinal use and extraction of cis-ligusticum lactone
  • Medicinal use and extraction of cis-ligusticum lactone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Crush 100Kg of Rhizoma Chuanxiong into fine powder with a particle size of 0.1-1mm. Add 1500kg of 95% ethanol to the extraction tank, start the high-shear instrument, and continuously add medicinal powder to the extraction tank for extraction. The speed of the high-shear instrument gradually increases from 2000 / min to 20000 / min, and the extraction temperature increases from room temperature to 20°C. Raise gradually, control it below 60 ℃, extract time is 3 hours. Collect the extract, recover the solvent under reduced pressure at 60°C, and apply the residue directly to a silica gel (200-400 mesh) column, elute with petroleum ether: ethyl acetate (98:2), collect the second color band, and store at 40 The solvent in the eluate was recovered under reduced pressure at ℃, and the residue was separated and purified repeatedly by the above-mentioned silica gel column chromatography method for 3 times. To remove the solvent, the temperature of the molecular distillation is 40°C...

Embodiment 2

[0039] Grind 115Kg of Rhizoma Chuanxiong into a fine powder of 0.1-1mm, put 800kg of ethyl acetate in the extraction tank, start the high-shear instrument, add medicinal powder continuously in the extraction tank for extraction, and gradually increase the speed of the high-shear instrument from 2000 / min. Rise to 20000 / min, extraction temperature is 20°C-60°C, extraction time is 1.5 hours, collect the extract, recover the solvent under reduced pressure at 50°C, and directly load the residue on a silica gel (200-400 mesh) column, use petroleum Ether: ethyl acetate (9:1) was eluted, the second color band was collected, and the solvent in the eluent was recovered under reduced pressure at 50°C, and the residue was separated and purified twice by the above silica gel column chromatography method, and the final After the eluent of the primary column chromatography recovers the solvent under reduced pressure, the residue is desolvated by molecular distillation. -6 Gradually rise to 1...

Embodiment 3

[0041] Crush 110Kg of Rhizoma Chuanxiong into a fine powder of 0.1-1mm, put 330kg of petroleum ether into the extraction tank, start the high-shear instrument, add medicinal powder continuously into the extraction tank for extraction, and gradually increase the speed of the high-shear instrument from 2000 / min To 20000 / min, the extraction temperature is controlled between 20-60°C, the extraction time is 0.5 hours, the extract is collected, the solvent is recovered under reduced pressure at 20°C, the residue is directly loaded on a silica gel (200-400 mesh) column, and the Petroleum ether: ethyl acetate (4:1) was eluted, the second color band was collected, and the solvent in the eluent was recovered under reduced pressure at 50°C. After removing the liquid and recovering the solvent under reduced pressure, the residue is removed from the solvent by molecular distillation. The temperature of the molecular distillation is 40°C, and the vacuum degree is increased from 10 -6 Gradua...

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Abstract

A process for extracting cis-ligustilide includes such steps as pretreating, pulverizing, high-shear extracting, separating and purifying. Its advantages are low toxin and high output rate and purity. It can be used in preparing the medicine for prevent and treat the diseases associated with microcirculation disorder.

Description

technical field [0001] The invention relates to a method for extracting cis-ligustilide in medicinal plants, in particular to a method for extracting cis-ligustilide in Chuanxiong Rhizoma Chuanxiong, and the medicinal application of cis-ligustilide. Background technique [0002] The structure and physical properties of cis-ligustilide: [0003] Structural formula: [0004] [0005] Molecular formula and molecular weight: C 12 h 14 o 2 190 with 6 unsaturation. [0006] Chemical name: (10Z)-3-butylene-4,5-dihydrophthalide [0007] English chemical name: (10Z)-3-butylidene-4, 5-dihydrophthalide [0008] English name: ligustilide [0009] Property description: yellowish oily substance with fragrance, boiling point 168~169℃ / 6mmHg. Soluble in n-hexane, cyclohexane, petroleum ether, ether, ethyl acetate, methanol, etc. [0010] Current status of extraction and application of ligustilide: [0011] Ligustilide has two isomers, one is cis and the other is trans. The exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/88A61K31/343A61P3/10A61P11/00A61P9/10A61P43/00A61K31/34A61K31/365A61K36/236
CPCA61K31/365C07D307/88A61K36/236A61K31/34A61P3/10A61P9/10A61P11/00A61P43/00
Inventor 刘俊魏玉平王永富邓颖杰
Owner 北京九龙制药有限公司
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