WO2012122807A1 - 肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 - Google Patents
肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 Download PDFInfo
- Publication number
- WO2012122807A1 WO2012122807A1 PCT/CN2011/081723 CN2011081723W WO2012122807A1 WO 2012122807 A1 WO2012122807 A1 WO 2012122807A1 CN 2011081723 W CN2011081723 W CN 2011081723W WO 2012122807 A1 WO2012122807 A1 WO 2012122807A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lactic acid
- creatinine
- polylactic acid
- reaction
- acid
- Prior art date
- 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.)
- Ceased
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/823—Preparation processes characterised by the catalyst used for the preparation of polylactones or polylactides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
- C08G63/08—Lactones or lactides
Definitions
- the invention belongs to the technical field of medicinal biodegradable materials, and relates to a process for condensing and polymerizing a creatinine catalyst into a highly biosafety polylactic acid by using biomass (a non-toxic organic substance produced by metabolism in the human body).
- biomass a non-toxic organic substance produced by metabolism in the human body.
- Biodegradable polylactic acid has achieved many important applications in pharmaceutical science and biomedical engineering, such as: carriers for controlled release and targeted drugs, hard tissue repair materials, and bioactive species scaffolds in biological tissue engineering.
- the use of polylactic acid as a carrier of the drug has the advantages of greatly improving the efficacy, reducing the amount of administration, and reducing the side effects of the drug.
- a polymer having a weight average molecular weight (M w ) of 1 ⁇ 5 ⁇ 10 4 to 3 ⁇ 0 ⁇ 10 4 is usually used (Zhao, ⁇ ; Wang, ⁇ ; Yang, FJ Appl. Polym. ScL , 2005, 97, 195-200), but requires that the polymer should not contain any toxic metals and other components of toxicity.
- M w weight average molecular weight
- the production of commercial polylactic acid is mainly carried out by using 1. Stannous octoate catalyzed by lactide ring-opening polymerization; 2. Stannous chloride catalyzed by direct condensing of lactic acid.
- one method is a two-component catalytic method developed by American polymerist JL Hedrick et al., the principle is to use a phosphoniumamine.
- a strong nucleophile such as triphenylphosphine, 4-dimethylaminopyridine, etc.
- alcohol mercaptobutanol, methanol, benzyl alcohol, etc.
- the object of the present invention is to solve the problem that the stannous chloride catalyst used in the synthesis of polylactic acid by the prior polycondensation method cannot be completely removed from the polymer, and thus the application of the polylactic acid to the human medicinal carrier may have a safety hazard, and provides a non-toxicity.
- Metal-free biomass organic ruthenium compound is a catalyst for the synthesis of highly biosafety medical biodegradable polylactic acid by direct polycondensation.
- the present invention is the first to develop a non-toxic, metal-free biomass organic bismuth compound (the arginine metabolite creatinine in human body) as a catalyst, and lactic acid (85-90% aqueous solution) as a monomer to be synthesized by bulk condensation polymerization.
- a non-toxic, metal-free biomass organic bismuth compound the arginine metabolite creatinine in human body
- lactic acid 85-90% aqueous solution
- the non-toxic, metal-free biomimetic organic bismuth compound used in the present invention has the chemical name: 2-amino-1-methyl-2-imidazolidin-4-one (English name: 2-amino -l-methyl-2-imidazolin-4-one, English common name creatinine, English abbreviation: CR), its molecular structure is as follows:
- the creatinine catalyzed by creatinine catalyzes the direct condensation polymerization of lactic acid into medical biodegradable polylactic acid by using phytochemicals of arginine as a catalyst, and lactic acid (85-90% aqueous solution) as a monomer.
- the synthesis of highly biosafety polylactic acid by bulk condensation polymerization specifically comprising:
- the industrial grade lactic acid (LA, 85-90% by mass, aqueous solution) is used as the monomer.
- LA 85-90% by mass, aqueous solution
- the oligolactic acid OLA having a number average molecular weight of Mn 400-600 is synthesized.
- the synthesis conditions are as follows: lactic acid is charged into the reaction vessel, and vacuum is repeatedly applied. After argon gas was operated three times. The mixture is heated to 130 to 150 ° C under an argon atmosphere and a normal pressure, and dehydrated for 1 to 6 hours. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 130 to 150 ° C for 1 to 6 hours. The reaction vessel was then depressurized to 30 Torr and the reaction was continued at 130 to 150 ° C for 1-6 hours.
- the oligolactic acid OLA synthesized in the first step is used as a raw material, and commercial creatinine is used as a catalyst to carry out bulk melt polycondensation under reduced pressure and a certain temperature to synthesize a highly biosafety medicinal polylactic acid.
- Synthesis conditions The catalyst creatinine was added to the reaction vessel to control the molar ratio of creatinine to lactic acid from 1:100 to 1:1000, and the reaction vessel was depressurized to 10 Torr and heated to 150-190 ° C for 48 to 96 hours.
- the method of the present invention synthesized a molecular weight of polylactic acid 1.5 ⁇ 3.0xl0 4, a molecular weight distribution index (PDI) of 1.70 1.90.
- PDI molecular weight distribution index
- the polylactic acid synthesized by the method of the present invention does not contain any metal or other toxic components and can be used as a carrier for targeted and controlled release drugs. Advantages and benefits of the present invention:
- the catalyst used is highly biocompatible and biosafety
- the synthesized polylactic acid does not contain any metal and other toxic components, so it is suitable for carriers for controlled release and targeted drugs;
- the polymerization process is simple, the raw material cost is low, and it is easy to implement industrially;
- the narrow molecular weight distribution of the synthesized product, molecular weight may be implemented in the range of 1.5 ⁇ 3.0xl0 4 controllable. detailed description:
- the reaction vessel was charged with 100 g of L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. It was heated to 130 V under an argon atmosphere and a normal pressure, and dehydrated for 6 hours. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 130 °C for 6 hours. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 130 ° C for 6 hours to obtain an oligomeric lactic acid OLA.
- the reaction vessel was charged with 100 g of D, L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas operation for three times. The mixture was heated to 130 ° C under an argon atmosphere and a normal pressure, and dehydrated for 6 hours. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 130 for 6 hours. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 130 ° C for 6 hours to obtain an oligomeric lactic acid OLA.
- the reaction vessel was charged with 100 g of L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. The mixture was heated to 150 V under an argon atmosphere and a normal pressure, and dehydrated for 1 hour. The reactor was then depressurized to 100 Torr and the reaction was continued at 150 for 1 hour. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 150 ° C for 1 hour to obtain an oligolactic acid OLA.
- the reactor was charged with 100 g of D,L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times.
- the mixture was heated to 150 V under an argon atmosphere and a normal pressure, and dehydrated for 1 hour.
- the reaction vessel was then depressurized to 100 Torr and the reaction was continued at 150 ° C for 1 hour.
- the reaction vessel was depressurized to 30 Torr and the reaction was continued at 150 ° C for 1 hour to obtain oligolactic acid OLA.
- the reaction vessel was charged with 100 g of L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. The mixture was heated to 150 V under an argon atmosphere and a normal pressure, and dehydrated for 1 hour. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 150 ° C for 1 hour. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 150 ° C for 1 hour to obtain oligolactic acid OLA.
- the reaction vessel was charged with 100 g of D,L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. The mixture was heated to 150 ° C under an argon atmosphere and a normal pressure, and dehydrated for 1 hour. Then depressurize the reactor to 100 Torr The reaction was continued at 150 ° C for 1 hour. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 150 ° C for 1 hour to obtain oligolactic acid OLA.
- the reaction vessel was charged with 100 g of L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. The mixture was heated to 140 ° C under an argon atmosphere and a normal pressure, and dehydrated for 3 hours. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 140 °C for 3 hours. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 140 °C for 3 hours to obtain oligolactic acid OLA.
- the reaction vessel was charged with 100 g of L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. The mixture was heated to 150 ° C under an argon atmosphere and a normal pressure, and dehydrated for 3 hours. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 150 for 3 hours. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 150 ° C for 3 hours to obtain an oligolactic acid OLA.
- the reaction vessel was charged with 100 g of L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas treatment three times. The mixture was heated to 150 V under an argon atmosphere and a normal pressure, and dehydrated for 1 hour. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 150 ° C for 1 hour. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 150 ° C for 1 hour to obtain oligolactic acid OLA.
- the reaction vessel was charged with 100 g of D, L-lactic acid (85-90% by mass), and after repeated vacuuming and argon gas operation for three times. The mixture was heated to 130 ° C under an argon atmosphere and a normal pressure, and dehydrated for 3 hours. The reaction vessel was then depressurized to 100 Torr and the reaction was continued at 130 for 3 hours. Then, the reaction vessel was depressurized to 30 Torr and the reaction was continued at 130 ° C for 3 hours to obtain an oligomeric lactic acid OLA.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Epidemiology (AREA)
- Pharmacology & Pharmacy (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Polyesters Or Polycarbonates (AREA)
- Materials For Medical Uses (AREA)
- Medicinal Preparation (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013504112A JP5458216B2 (ja) | 2011-03-14 | 2011-11-03 | クレアチニンを触媒とする乳酸からの重縮合による医療用生分解性ポリ乳酸の製造方法 |
| US13/511,311 US8846853B2 (en) | 2011-03-14 | 2011-11-03 | Polycondensation of lactic acid for medical biodegradable polylactic acid catalyzed by creatinine |
| GB1209095.7A GB2496227B (en) | 2011-11-03 | 2011-11-03 | Polycondensation of lactic acid for medical biodegradable polylactic acid catalyzed by creatinine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110059090.8A CN102161752B (zh) | 2011-03-14 | 2011-03-14 | 肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 |
| CN201110059090.8 | 2011-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012122807A1 true WO2012122807A1 (zh) | 2012-09-20 |
Family
ID=44463233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/081723 Ceased WO2012122807A1 (zh) | 2011-03-14 | 2011-11-03 | 肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8846853B2 (zh) |
| JP (1) | JP5458216B2 (zh) |
| CN (1) | CN102161752B (zh) |
| WO (1) | WO2012122807A1 (zh) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161752B (zh) * | 2011-03-14 | 2013-02-27 | 南京大学 | 肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 |
| CN102329269B (zh) * | 2011-06-30 | 2013-07-17 | 南京大学 | 仿生氯化肌酐胍催化缩聚法合成高分子量聚乳酸 |
| GB2496227B (en) * | 2011-11-03 | 2015-11-04 | Nanjing University | Polycondensation of lactic acid for medical biodegradable polylactic acid catalyzed by creatinine |
| CN102504214B (zh) * | 2011-11-11 | 2013-12-11 | 南京大学 | 一种仿生有机胍盐催化合成聚乳酸-乙醇酸的工艺方法 |
| CN102675607B (zh) * | 2012-05-22 | 2013-08-14 | 南京大学 | 乳酸自催化熔融缩聚—肌酐催化固相缩聚联用法合成高分子量聚乳酸 |
| CN102702535B (zh) * | 2012-07-02 | 2014-04-09 | 南京大学 | 肌酐催化合成聚乳酸—聚乙二醇嵌段共聚物的工艺方法 |
| CN102702487A (zh) * | 2012-07-02 | 2012-10-03 | 南京大学 | 肌酐催化缩聚d-乳酸合成高生物安全性聚d-乳酸的工艺方法 |
| CN103193759B (zh) * | 2013-04-24 | 2014-11-26 | 南京大学 | 生物质有机胍催化法合成光学纯l-/d-丙交酯的工艺方法 |
| CN104119518B (zh) * | 2014-07-22 | 2016-01-20 | 南京大学 | 生物有机胍盐催化法合成聚(丁二酸丁二醇酯-共-己二酸丁二醇酯)的方法 |
| CN104448261B (zh) * | 2014-12-12 | 2016-09-14 | 南京大学 | 高性能高分子量聚l-乳酸合成工艺 |
| CN104725615B (zh) * | 2015-04-13 | 2016-08-03 | 南京大学 | 生物有机胍催化法合成聚丁二酸丁二醇酯的工艺方法 |
| CN104725616B (zh) * | 2015-04-13 | 2017-01-11 | 南京大学 | 有机胍催化熔融-固相缩聚合成聚(己二酸-共-对苯二甲酸丁二醇酯) |
| CN112266469A (zh) * | 2020-10-30 | 2021-01-26 | 河南龙都天仁生物材料有限公司 | 一种超高分子量聚乳酸的合成工艺 |
| CN113582965B (zh) * | 2021-08-23 | 2022-04-26 | 扬州惠通科技股份有限公司 | 一种基于有机胍配合物催化裂解制备丙交酯的方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556128A (zh) * | 2004-01-08 | 2004-12-22 | 南开大学 | 生物质有机胍化物催化合成医用生物降解材料的工艺方法 |
| CN102161752A (zh) * | 2011-03-14 | 2011-08-24 | 南京大学 | 肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3168263B2 (ja) * | 1984-07-06 | 2001-05-21 | 和光純薬工業株式会社 | 新規重合体及びこれを用いた医薬 |
| JPH0678425B2 (ja) * | 1984-07-06 | 1994-10-05 | 和光純薬工業株式会社 | 重合体の新規製造法 |
| CN101367921A (zh) * | 2008-10-06 | 2009-02-18 | 中国人民解放军第二军医大学 | 一种丙交酯开环合成聚乳酸的方法 |
| KR20110105845A (ko) * | 2008-12-26 | 2011-09-27 | 도레이 카부시키가이샤 | 락트산 및 폴리락트산의 제조 방법 |
| US8367796B2 (en) * | 2009-07-01 | 2013-02-05 | International Business Machines Corporation | Catalytic polymerization of polymers containing electrophilic linkages using nucleophilic reagents |
-
2011
- 2011-03-14 CN CN201110059090.8A patent/CN102161752B/zh active Active
- 2011-11-03 WO PCT/CN2011/081723 patent/WO2012122807A1/zh not_active Ceased
- 2011-11-03 US US13/511,311 patent/US8846853B2/en not_active Expired - Fee Related
- 2011-11-03 JP JP2013504112A patent/JP5458216B2/ja not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556128A (zh) * | 2004-01-08 | 2004-12-22 | 南开大学 | 生物质有机胍化物催化合成医用生物降解材料的工艺方法 |
| CN102161752A (zh) * | 2011-03-14 | 2011-08-24 | 南京大学 | 肌酐催化乳酸缩聚合成医用生物降解性聚乳酸的工艺方法 |
Non-Patent Citations (2)
| Title |
|---|
| C. WANG ET AL.: "Ring opening polymerization of L-lactide initiated by creatinine", BIOMATERIALS, vol. 25, 2004, pages 5797 - 5801 * |
| SOFIA MALBERG ET AL.: "Bio-Safe Synthesis of Linear and Branched PLLA", JOURNAL OF POLYMER SCIENCE: PART A: POLYMER CHEMISTRY, vol. 48, 2010, pages 1214 - 1219 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8846853B2 (en) | 2014-09-30 |
| JP2013515164A (ja) | 2013-05-02 |
| US20130116400A1 (en) | 2013-05-09 |
| JP5458216B2 (ja) | 2014-04-02 |
| CN102161752A (zh) | 2011-08-24 |
| CN102161752B (zh) | 2013-02-27 |
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