CN1141927A - Sodium alginate diester and preparation method - Google Patents
Sodium alginate diester and preparation method Download PDFInfo
- Publication number
- CN1141927A CN1141927A CN 93111311 CN93111311A CN1141927A CN 1141927 A CN1141927 A CN 1141927A CN 93111311 CN93111311 CN 93111311 CN 93111311 A CN93111311 A CN 93111311A CN 1141927 A CN1141927 A CN 1141927A
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- CN
- China
- Prior art keywords
- blood
- propylene glycol
- alginic acid
- glycol alginate
- alginate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Polysaccharides And Polysaccharide Derivatives (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Sodium alginate is hydrolyzed in hydrochloric acid to prepare alginic acid which is then reacted with epoxy propane to obtain propane diester alginate by using NaOH or NaAC as catalyst, finally sulfonated by chlorosulfonic acid, using formylamine or pyridine as catalyst. Said medicine is low in toxicity and wide in medicinal effect, and has the functions of blood-coagulation-resisting, anti-thrombus, regulating blood-fat, reducing blood-viscosity, inhibiting the aggregation of blood cells and red blood cells, and reducing blood-pressure and blood-sugar. It can be indicated for treatment of high-coagulability high-blood-viscosity complex and infarction diseases.
Description
During the preparation propylene glycol alginate sodium sulfate, allow sodium alginate hydrolysis in aqueous hydrochloric acid produce alginic acid earlier; The latter is added in the propylene oxide, the milliliter number ratio of alignic gram number and propylene oxide is 1: 2～5 again, and is catalyzer with NaOH or KOH or NaAC, and its consumption is 0.5～1.0% of an alginic acid weight, at 50～80 ℃ and 1.5～3.0kg/cm
2Pressure down or reflux under the normal pressure, 40～50 ℃ of conditions and promptly make propylene glycol alginate; Be solvent with methane amide or pyridine at last, under 60～80 ℃ condition, promptly obtain alginic acid propyl ester sulfuric ester sodium salt with the chlorsulfonic acid sulfonation.
Embodiment:
1, get 100 gram food grade sodium alginates, adding fills in the container of 500 milliliters of 0.5N hydrochloric acid solns, soaks 10 hours, stirs once every 1 hour.Soak and finish, disacidify liquid inclines.Be placed in the there-necked flask that hydrolysis uses, add 1000 milliliters of 0.5N hydrochloric acid again, in 0.6kg/cm
2Hydrolysis is 3 hours under the pressure.After hydrolysis is intact, put into the sedimentation of sedimentation container, with sediment (alginic acid after the hydrolysis) thorough washing, behind the dehydration of alcohol, drain and contain a certain amount of moisture content behind the upper strata waste acid water that inclines.
2, get the 50 gram alginic acids (water content is 40%) that said hydrolyzed obtains, put into reactor, add 100 milliliters of propylene oxide, add 0.4 gram NaOH again in 1.5kg/cm
2Under the pressure, constantly stirring reaction is 3 hours, and reaction product ethanol repetitive scrubbing three times in 60 ℃ of oven dry, promptly get propylene glycol alginate.
3, get 30 gram exsiccant propyl ester, put into 1000 milliliters there-necked flask, install whipping appts and thermometer, add 300 milliliters of formamide solvent, stir, slowly splash into 90 milliliters of chlorsulfonic acids, temperature is not higher than 5 ℃ in the dropping process, makes it be warming up to 65～70 ℃ after dripping, and reacts 3 hours.After the cooling, add 2000 milliliter of 95% alcohol and carry out post precipitation, use alcohol precipitation again, so triplicate resolution of precipitate.Dissolving again, lysate are by 717 and 732 yin, yang ion exchange column desalinations, and the solution after the desalination uses the NaOH of 4N to transfer pH to 8, uses alcohol precipitation again, promptly gets the sodium salt of alginic acid propyl ester sulfuric ester, also is propylene glycol alginate sodium sulfate.
The propylene glycol alginate sodium sulfate that makes by this technology is white amorphous powder, and tasteless, nothing is smelt, and is soluble in water, is insoluble to ether, acetone and other organic solvent.It is the identification of ester group and sodium salt.The content of this propylene glycol alginate sodium sulfate organosulfur is 9～14%, and intrinsic viscosity is 10～15, pH value 5.5～7.5, and weight loss on drying is no more than 10%, and muriate is less than 0.5%, and heavy metal is less than 15ppm, and arsenic is less than 2ppm.
Propylene glycol alginate sodium sulfate LD
50=748mg/kg, toxicity is low, and pharmacological action is extensive, as anticoagulation, antithrombotic, accent blood fat, reducing blood viscosity, inhibition red corpuscle or platelet aggregation, microcirculation improvement, and hypotensive, hypoglycemic activity is arranged.Therefore, propylene glycol alginate sodium sulfate has comparatively ideal prevention and result of treatment to hypercoagulability, high blood viscosity syndromes and infraction disease, can be used for intravascular coagulation (DIC), thrombophlebitis, vasculitis, retinal vein embolism due to thrombus, cerebral infarction, cerebral arteriosclerosis disease group, stenocardia, myocardial infarction and the various cause of disease, the prevention and the treatment of wound or operation back thrombus etc.Be used also with immunomodulator and can treat hemorrhagic fever.It is the medicine of a kind of ideal prevent and treat ischemia heart, cerebrovascular disease really.
Claims (2)
1, a kind of heparitin new drug propylene glycol alginate sodium sulfate, full name are alginic acid propyl ester sulfuric ester sodium salt,
Its structural formula is
R-CH in the structural formula
2CH
2CH
2(OH)
R′-SO
3Na
2, a kind of preparation method of propylene glycol alginate sodium sulfate, it is characterized in that allowing earlier sodium alginate hydrolysis in hydrochloric acid produce alginic acid, again the latter is added in the propylene oxide, the milliliter number ratio of alignic gram number and propylene oxide is 1: 2～5, and be catalyzer with NaOH or KOH or NaAC, its consumption is 0.5～1.0% of an alginic acid weight, at 50～80 ℃ and 1.5～3.0kg/cm
2Pressure down or reflux under the normal pressure, 40～50 ℃ of conditions and promptly get propylene glycol alginate; Be solvent with methane amide or pyridine at last, under 60～80 ℃ condition, use the chlorsulfonic acid sulfonation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93111311A CN1059679C (en) | 1993-06-18 | 1993-06-18 | Sodium alginate diester and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93111311A CN1059679C (en) | 1993-06-18 | 1993-06-18 | Sodium alginate diester and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1141927A true CN1141927A (en) | 1997-02-05 |
| CN1059679C CN1059679C (en) | 2000-12-20 |
Family
ID=4989108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93111311A Expired - Fee Related CN1059679C (en) | 1993-06-18 | 1993-06-18 | Sodium alginate diester and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059679C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425623C (en) * | 2006-09-28 | 2008-10-15 | 青岛明月海藻集团有限公司 | Production method of propylene glycol alginate special for beer |
| CN104744607A (en) * | 2015-04-22 | 2015-07-01 | 青岛正大海尔制药有限公司 | Method for preparing polysaccharide sulfate through nanofiltration technology |
| CN104774278A (en) * | 2015-04-22 | 2015-07-15 | 青岛正大海尔制药有限公司 | Method for preparing polysaccharide sulfate by virtue of electrochemical reaction |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60206801A (en) * | 1984-03-30 | 1985-10-18 | Kimitsu Kagaku Kenkyusho:Kk | Production of organic solvent-soluble alginic acid |
| KR900002822B1 (en) * | 1986-10-16 | 1990-05-01 | 재단법인 한국화학연구소 | Process for the preparation of 2-hydronyproply alginate |
| FR2648463B1 (en) * | 1989-06-14 | 1993-01-22 | Inst Fs Rech Expl Mer | SULPHATE POLYSACCHARIDES, ANTICOAGULATING AGENT AND ANTI-COMPLEMENTARY AGENT OBTAINED FROM BROWN ALGAE FUCANES AND PROCESS FOR OBTAINING SAME |
| JP2511577B2 (en) * | 1991-02-05 | 1996-06-26 | 株式会社紀文食品 | Sustained-release preparation consisting of propylene glycol alginate |
| JPH04266896A (en) * | 1991-02-22 | 1992-09-22 | Taiyo Fishery Co Ltd | Purification of alginic acid oligosaccharide and sulfuric acid group-containing oligosaccharide |
| CN1089619A (en) * | 1993-01-06 | 1994-07-20 | 山东烟台西苑制药厂 | A kind of production method of propylene glycol alginate sodium sulfate |
| CN1089496A (en) * | 1993-01-06 | 1994-07-20 | 山东烟台西苑制药厂 | Compound sodium alginati diesteras |
-
1993
- 1993-06-18 CN CN93111311A patent/CN1059679C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425623C (en) * | 2006-09-28 | 2008-10-15 | 青岛明月海藻集团有限公司 | Production method of propylene glycol alginate special for beer |
| CN104744607A (en) * | 2015-04-22 | 2015-07-01 | 青岛正大海尔制药有限公司 | Method for preparing polysaccharide sulfate through nanofiltration technology |
| CN104774278A (en) * | 2015-04-22 | 2015-07-15 | 青岛正大海尔制药有限公司 | Method for preparing polysaccharide sulfate by virtue of electrochemical reaction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059679C (en) | 2000-12-20 |
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