CN106995528A - 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法 - Google Patents
一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法 Download PDFInfo
- Publication number
- CN106995528A CN106995528A CN201610051218.9A CN201610051218A CN106995528A CN 106995528 A CN106995528 A CN 106995528A CN 201610051218 A CN201610051218 A CN 201610051218A CN 106995528 A CN106995528 A CN 106995528A
- Authority
- CN
- China
- Prior art keywords
- mpeg
- pdlla
- ether
- crude product
- organic solvent
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000000746 purification Methods 0.000 title claims abstract description 13
- 229920001244 Poly(D,L-lactide) Polymers 0.000 title claims description 7
- 239000012043 crude product Substances 0.000 claims abstract description 36
- 229920000151 polyglycol Polymers 0.000 claims abstract description 16
- 239000010695 polyglycol Substances 0.000 claims abstract description 16
- 239000004626 polylactic acid Substances 0.000 claims abstract description 16
- 229920001400 block copolymer Polymers 0.000 claims abstract description 15
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 14
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims abstract description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 31
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 24
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 24
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 21
- 238000001556 precipitation Methods 0.000 claims description 19
- 239000013049 sediment Substances 0.000 claims description 19
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 14
- 239000006228 supernatant Substances 0.000 claims description 14
- 239000003960 organic solvent Substances 0.000 claims description 13
- 238000005352 clarification Methods 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007151 ring opening polymerisation reaction Methods 0.000 claims description 3
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical class ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 39
- 238000009826 distribution Methods 0.000 abstract description 34
- 239000000693 micelle Substances 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 12
- 239000000843 powder Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 238000005227 gel permeation chromatography Methods 0.000 description 18
- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 description 18
- 229930012538 Paclitaxel Natural products 0.000 description 17
- 229960001592 paclitaxel Drugs 0.000 description 17
- 238000002360 preparation method Methods 0.000 description 16
- 238000005119 centrifugation Methods 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000002156 mixing Methods 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000010583 slow cooling Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000009472 formulation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 125000005474 octanoate group Chemical group 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000001727 in vivo Methods 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 235000014655 lactic acid Nutrition 0.000 description 3
- 229920001427 mPEG Polymers 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 239000012620 biological material Substances 0.000 description 2
- 238000013270 controlled release Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 210000000865 mononuclear phagocyte system Anatomy 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- 244000050510 Cunninghamia lanceolata Species 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 235000016408 Podocarpus macrophyllus Nutrition 0.000 description 1
- 229920000436 Poly(lactide-co-glycolide)-block-poly(ethylene glycol)-block-poly(lactide-co-glycolide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 244000162450 Taxus cuspidata Species 0.000 description 1
- 235000009065 Taxus cuspidata Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- QSKWJTXWJJOJFP-UHFFFAOYSA-N chloroform;ethoxyethane Chemical compound ClC(Cl)Cl.CCOCC QSKWJTXWJJOJFP-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920000359 diblock copolymer Polymers 0.000 description 1
- WGLUMOCWFMKWIL-UHFFFAOYSA-N dichloromethane;methanol Chemical class OC.ClCCl WGLUMOCWFMKWIL-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003937 drug carrier Substances 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 108010025899 gelatin film Proteins 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- IJJSYKQZFFGIEE-UHFFFAOYSA-N naphthalene;potassium Chemical compound [K].C1=CC=CC2=CC=CC=C21 IJJSYKQZFFGIEE-UHFFFAOYSA-N 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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
- C08G63/88—Post-polymerisation treatment
- C08G63/90—Purification; Drying
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/337—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having four-membered rings, e.g. taxol
-
- 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
- A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
- A61K9/1075—Microemulsions or submicron emulsions; Preconcentrates or solids thereof; Micelles, e.g. made of phospholipids or block copolymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/19—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles lyophilised, i.e. freeze-dried, solutions or dispersions
-
- 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
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/664—Polyesters containing oxygen in the form of ether groups derived from hydroxy carboxylic acids
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Dermatology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Dispersion Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Inorganic Chemistry (AREA)
- Polyethers (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
本发明公开了一种聚乙二醇单甲醚‑聚乳酸嵌段共聚物的精制方法。通过逐步降温法对聚乙二醇单甲醚‑聚乳酸嵌段共聚物粗品进行精制处理,使得聚合物的分子量分布缩窄,能够得到分子量分布为1.15以下的聚乙二醇单甲醚‑聚乳酸嵌段共聚物,以该精制后的聚乙二醇单甲醚‑聚乳酸嵌段共聚物制备得到的聚合物胶束粒径小且均一,冻干粉稳定性优异,复溶效果好。
Description
技术领域
本发明涉及高分子材料的精制领域,具体涉及一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法。
背景技术
聚乙二醇单甲醚-聚乳酸嵌段共聚物(mPEG-PDLLA)是一种近年来被广泛研究的生物相容性好的生物可降解材料,一般是以聚乙二醇单甲醚(mPEG)和D,L-丙交酯(D,L-LA)为单体,在辛酸亚锡的催化作用下进行配位开环聚合得到。该材料在体内可降解为聚乙二醇单甲醚和乳酸。其中mPEG具有优异的生物相容性,在体内能溶于组织液中,分子量4000以下的mPEG能被机体迅速排出体外而不产生任何毒副作用,其安全性已经得到了美国FDA的认证。乳酸则可进一步降解为二氧化碳和水,聚合物的降解产物均不存在潜在的毒副作用。聚乙二醇单甲醚-聚乳酸嵌段共聚物(mPEG-PDLLA)的临界胶束浓度(CMC)低,具有较好的物理稳定性、较高的载药量(李晓然,袁晓燕.聚乙二醇-聚乳酸共聚物药物载体[J].化学进展,2007,19(6).)。这种聚合物形成的核-壳结构的胶束,粒径在100nm以内(Vladimir P.Torchilin,Structure and design of polymericsurfactant-based drug delivery systems,Journal of Controlled Release,2001,73:137-172.)。其亲水的PEG外壳使聚合物胶束不易被网状内皮系统(RES)所识别而清除,因而在血液中具有较长的驻留时间;而纳米级的粒径使之由于增强渗透滞留(EPR)效应能在肿瘤部位积蓄,具有一定的被动靶向作用。2006年12月由韩国Samyang公司研发的注射用胶束化紫杉醇在韩国上市,商品名为Genexol-PM,随后在南亚一些国家上市,2009年向美国FDA提出新药申请,目前在美国已经完成Ⅱ期临床和Ⅲ期临床第一阶段研究(Kim S C,Kim D W,Shim Y H,et al.In vivo evaluation ofpolymeric micellar paclitaxel formulation:toxicity and efficacy[J].Journal ofControlled Release,2001,72(1):191-202.)。
然而目前生产、临床应用中发现存在一些不足,该制剂冻干粉及复溶溶液放置稳定性差,批次差别大,生产重现性不理想。研究表明聚合物材料的质量对生产应用及制剂稳定性有显著影响。中国专利申请CN103768013 A公布了一种以精制两亲性嵌段共聚物(mPEG-PDLLA)为载体的紫杉醇聚合物胶束,其中mPEG-PDLLA的精制工艺是以阳离子交换树脂处理聚乙二醇单甲醚-聚乳酸嵌段共聚物,能够有效降低锡含量,使复溶后的胶束溶液稳定性明显增加。中国专利申请CN 104892909 A公开了一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的制备方法,反应完毕后的后处理方法采用1-4次二氯甲烷溶解-乙醚结晶过程,其中在第一次或第二次结晶过程中加入将待纯化产品用二氯甲烷溶解后加入纯水洗涤的操作,能够去除更多低分子杂质,使产品的分子量分布明显降低,产品吸湿性有了异常明显的改善,使流动性更好,更适合产品的保存和使用。中国专利CN 102181048 B公开了一种医用聚醚/聚酯嵌段共聚物的制备方法,反应结束后产物中残存的未反应单体通过加水反应去除,重金属催化剂通过高速离心的方法去除。利用这种共聚物载药有效地提高了难溶性药物的溶解度,改善了药物的安全性和有效性,但其缺点在于用水分散后的稳定性较差,在很短的时间内就出现了药物的泄露,使得在临床应用时因其物理稳定性不高而无法进一步推广和真正应用。为了解决胶束制剂的稳定性,中国专利CN 101972480 B公开了一种通过在聚合物胶束中添加氨基酸的方法来提高胶束复溶后稳定性的技术,但是添加的物质对于工业化生产要求较高,并且添加的稳定剂增加了制剂工艺的繁琐性,同时添加的氨基酸等对主药有着降解作用,不适合大规模生产。研究表明mPEG-PDLLA的分子量均一性是影响胶束的大小和稳定性的重要因素。中国专利申请CN103980466 A公布了一种法以阴离子聚合机理制备聚乙二醇-聚乳酸嵌段共聚物,分子量具有更好的可控性,分子量分布窄,反应温度低,副反应少。但是使用的催化剂萘钾不适用于药用领域。中国专利申请CN104761710 A公布了一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的制备,单体在真空下熔融聚合,经过三次精制的聚合物分子量分布非常窄,制备的冻干制剂水分散后包封率大于90%的时间可以达到12小时以上,效果远远优于普通的冻干制剂。但是精制过程并没有除去聚合物中分子量偏高的部分,会延长制剂制备时的溶解时间和冻干制剂的复溶时间,并且增大胶束溶液的粒径。
发明内容
本发明的目的是提供一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法。通过逐步降温法对聚合物进行精制处理,使得聚合物的分子量分布缩窄,以该精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制备得到的聚合物胶束稳定性显著提高。
本发明技术方案:
一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法,采用逐步降温法,包括步骤:
(1)将聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品与有机溶剂甲混合,在40℃-55℃使粗品充分溶解,然后降温至30℃-40℃静置,使混合物充分分层至上层澄清,收集上层清液;将上层清液温度降至10℃-20℃(优选为15℃-18℃)后静置析出沉淀,收集沉淀;
(2)将步骤(1)中的沉淀用有机溶剂乙溶解,在冰乙醚或冰甲基叔丁基醚中沉淀,收集沉淀物,真空干燥,得到精制的聚乙二醇单甲醚-聚乳酸嵌段共聚物。
为了达到更好的发明效果,优选:
步骤(1)中,所述有机溶剂甲采用甲醇、乙醇、异丙醇中的一种,或者采用甲醇、乙醚、甲基叔丁基醚中的一种与乙腈、丙酮、二氯甲烷、三氯甲烷中的一种的两两组合。所述有机溶剂甲采用两两组合时可以采用任意比例,进一步优选为甲醇、乙醚、甲基叔丁基醚中的一种与乙腈、丙酮、二氯甲烷、三氯甲烷中的一种的体积比为1.5-10:1(最优选4-9:1)。
所述每克聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品中有机溶剂甲的用量为7ml-50ml。
所述在40℃-55℃使粗品充分溶解步骤的温度高于降温至30℃-40℃静置步骤的温度。进一步优选所述在40℃-55℃使粗品充分溶解步骤的温度与降温至30℃-40℃静置步骤的温度之差至少为5℃(最优选至少为10℃)。
步骤(2)中,所述有机溶剂乙采用乙腈、二氯甲烷、氯仿或丙酮。
所述冰乙醚或冰甲基叔丁基醚采用本领域常用的冰乙醚或冰甲基叔丁基醚,例如可选用2℃-8℃的乙醚或2℃-8℃的甲基叔丁基醚。
所述真空干燥的温度不宜过高,一般为20℃-35℃较适宜。
所述聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品是以聚乙二醇单甲醚和D,L-丙交酯为单体,在辛酸亚锡的催化作用下进行配位开环聚合得到。可直接采用市售产品也可采用现有的制备方法制备(Lucke A,Teβmar J,Schnell E,et al.Biodegradable poly(D,L-lactic acid)-poly(ethyleneglycol)-monomethyl ether diblock copolymers:structures and surfaceproperties relevant to their use as biomaterials[J].Biomaterials,2000,21(23):2361-2370.)。其中聚乙二醇单甲醚的数均分子量为2000-10000,聚乙二醇单甲醚与D,L-丙交酯的质量比为1:0.5-1.2。聚乙二醇单甲醚数均分子量优选为2000,聚乙二醇单甲醚与D,L-丙交酯的质量比优选为1:0.8-1.0。制备方法包括:配方量的聚乙二醇单甲醚和D,L-丙交酯用甲苯共沸除水后加入催化剂辛酸亚锡,120℃-130℃反应22小时-26小时,反应完成后在乙醚或甲基叔丁基醚中搅拌沉降,真空干燥得聚合物粗品。所述聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品的分子量分布一般在1.2以上,通过本发明逐步降温法精制能够得到分子量分布为1.15以下的聚乙二醇单甲醚-聚乳酸嵌段共聚物。
本发明的有益效果:
本发明逐步降温法精制能够得到分子量分布为1.15以下的聚乙二醇单甲醚-聚乳酸嵌段共聚物,聚合物的分子量分布缩窄。采用本发明精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制备得到的胶束粒径小且均一,冻干粉稳定性优异,复溶效果好。以该精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制备得到的紫杉醇聚合物胶束稳定性显著提高。
本发明方法工艺流程简单,用时短且适宜放大生产。
附图说明
图1为实施例1中mPEG-PDLLA粗品的GPC图谱;
图2为实施例2中mPEG-PDLLA粗品的GPC图谱;
图3为实施例3中mPEG-PDLLA粗品的GPC图谱;
图4为实施例4中精制后mPEG-PDLLA的1H-NMR图谱;
图5为实施例4中精制后mPEG-PDLLA的GPC图谱;
图6为实施例5中精制后mPEG-PDLLA的GPC图谱;
图7为实施例6中精制后mPEG-PDLLA的GPC图谱;
图8为实施例7中精制后mPEG-PDLLA的GPC图谱;
图9为实施例8中精制后mPEG-PDLLA的GPC图谱;
图10为实施例9中精制后mPEG-PDLLA的GPC图谱;
图11为实施例10中精制后mPEG-PDLLA的GPC图谱。
具体实施方式
下面将通过具体实施例对本发明做进一步说明,但需要指出的是,以下实施例不能构成对本发明的任何限制。聚乙二醇单甲醚-聚乳酸嵌段共聚物的粗品和精制产品采用核磁氢谱和凝胶渗透色谱(GPC)进行分子量及分子量分布分析。
实施例1
称取mPEG-200050.1g、D,L-LA45.5g和甲苯500ml加入反应釜中,搅拌加热升温至110℃,共沸去水。然后停止加热,将混合物的温度降至低于90℃,加入0.25g的催化剂辛酸亚锡。在搅拌下,混合物保持130℃反应23小时。反应完成后降温至50℃,在4℃冰乙醚中搅拌沉降,收集沉淀物,真空干燥得mPEG-PDLLA粗品。图1的GPC检测结果如下:Mn:5474,分子量分布:1.227。其中,表1为图1中宽分布未知样相对峰表。
表1
实施例2
称取mPEG-200049.6g、D,L-LA46.1g和甲苯500ml加入反应釜中,搅拌加热升温至120℃,共沸去水。然后停止加热,将混合物的温度降至低于90℃,加入0.25g的催化剂辛酸亚锡。在搅拌下,混合物保持120℃反应22小时。反应完成后降温至60℃,在4℃冰乙醚中搅拌沉降,收集沉淀物,真空干燥得mPEG-PDLLA粗品。图2的GPC检测结果如下:Mn:5588,分子量分布:1.206。其中,表2为图2中宽分布未知样相对峰表。
表2
实施例3
称取mPEG-200050.4g、D,L-LA42.1g和甲苯500ml加入反应釜中,搅拌加热升温至130℃,共沸去水。然后停止加热,将混合物的温度降至低于90℃,加入0.25g的催化剂辛酸亚锡。在搅拌下,混合物保持130℃反应24小时。反应完成后降温至60℃,在4℃冰甲基叔丁基醚中沉降,收集沉淀物,真空干燥得mPEG-PDLLA粗品。图3的GPC检测结果如下:Mn:5091,分子量分布:1.313。其中,表3为图3中宽分布未知样相对峰表。
表3
实施例4
取实施例1的mPEG-PDLLA粗品10.02g,加入200ml甲醇,在40℃下搅拌40min,搅拌速度为60r/min,使粗品充分溶解;然后缓慢降温至30℃静置,使混合物充分分层至上层澄清,在温度设置为30℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在15℃下静置60min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率35%。得到的聚合物用氢核磁共振和凝胶渗透色谱进行表征,结果如图4、表4和图5。图4为聚乙二醇单甲醚-聚乳酸嵌段共聚物的核磁氢谱表征。PDLLA段分子量为1883,符合单体投料比。图5的GPC检测结果如下:Mn:5836,分子量分布:1.105。其中,表4为图5中宽分布未知样相对峰表。
表4
实施例5
取实施例2的mPEG-PDLLA粗品10.14g,加入80ml乙醇至反应釜中,在50℃下搅拌40min,搅拌速度为60r/min,使粗品充分溶解;然后缓慢降温至40℃静置,使混合物充分分层至上层澄清,在温度设置为40℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在18℃下静置60min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率36%。得到的聚合物用凝胶渗透色谱进行表征,结果如图6和表5。图6的GPC检测结果如下:Mn:5757,分子量分布:1.103。其中,表5为图6中宽分布未知样相对峰表。
表5
实施例6
取实施例2的mPEG-PDLLA粗品10.01g,加入100ml乙醇至反应釜中,在52℃下搅拌40min,搅拌速度为60r/min,使粗品充分溶解;然后缓慢降温至40℃静置,使混合物充分分层至上层澄清,在温度设置为40℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在18℃下静置60min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率33%。得到的聚合物用凝胶渗透色谱进行表征,结果如图7和表6。图7的GPC检测结果如下:Mn:5877,分子量分布:1.119。其中,表6为图7中宽分布未知样相对峰表。
表6
实施例7
取实施例2的mPEG-PDLLA粗品10.05g,加入150ml乙醇至反应釜中,在55℃下搅拌40min,搅拌速度为60r/min,使粗品充分溶解;然后缓慢降温至40℃静置,使混合物充分分层至上层澄清,在温度设置为40℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在18℃下静置60min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率31%。得到的聚合物用凝胶渗透色谱进行表征,结果如图8和表7。图8的GPC检测结果如下:Mn:5968,分子量分布:1.097。其中,表7为图8中宽分布未知样相对峰表。
表7
实施例8
取实施例2的mPEG-PDLLA粗品10.11g,加入200ml乙醇至反应釜中,在50℃下搅拌40min,搅拌速度为60r/min,使粗品充分溶解;然后缓慢降温至40℃静置,使混合物充分分层至上层澄清,在温度设置为40℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在18℃下静置60min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率27%。得到的聚合物用凝胶渗透色谱进行表征,结果如图9和表8。图9的GPC检测结果如下:Mn:6040,分子量分布:1.097。其中,表8为图9中宽分布未知样相对峰表。
表8
实施例9
取实施例2的mPEG-PDLLA粗品10.07g,加入300ml乙醚-三氯甲烷混合溶剂(乙醚与三氯甲烷的体积比为4:1)至反应釜中,在50℃下搅拌30min,搅拌速度为30r/min,使粗品充分溶解;然后缓慢降温至30℃静置,使混合物充分分层至上层澄清,在温度设置为30℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在15℃下静置30min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率36%。得到的聚合物用凝胶渗透色谱进行表征,结果如图10和表9。图10的GPC检测结果如下:Mn:6012,分子量分布:1.095。其中,表9为图10中宽分布未知样相对峰表。
表9
实施例10
取实施例3的mPEG-PDLLA粗品10.23g,加入500ml甲醇-二氯甲烷混合溶剂(甲醇与二氯甲烷的体积比为9:1)至反应釜中,在45℃下搅拌30min,搅拌速度为30r/min,使粗品充分溶解;然后缓慢降温至35℃静置,使混合物充分分层至上层澄清,在温度设置为35℃的离心机中离心,转速1700r/min,离心5分钟,收集上层清液;将上层清液在16℃下静置30min析出沉淀后离心,收集下层沉淀;将沉淀用适量丙酮溶解后再在4℃冰甲基叔丁基醚中沉淀,离心收集沉淀物,30℃真空干燥,得到精制后的mPEG-PDLLA。收率33%。得到的聚合物用凝胶渗透色谱进行表征,结果如图11和表10。图11的GPC检测结果如下:Mn:5481,分子量分布:1.092。其中,表10为图11中宽分布未知样相对峰表。
表10
实施例11
紫杉醇聚合物胶束冻干制剂的制备和稳定性考察
1、利用本发明制备的嵌段聚合物为载体制备药物纳米聚合物胶束
(1)取紫杉醇300mg,实施例制备的mPEG-PDLLA粗品及精制后mPEG-PDLLA各1500mg,有机溶剂丙酮30ml,备用。
(2)向mPEG-PDLLA和紫杉醇的混合物中加入30ml丙酮摇晃溶解,然后在50℃、100r/min的转速下旋蒸1h,蒸去丙酮得到紫杉醇和聚合物混合凝胶膜,快速加入50ml 50℃的去离子水,涡旋至完全水化得胶束溶液,然后0.22μm滤膜过滤,分装成5ml每瓶,冻干。
2、以精制前后聚合物制备的胶束冻干粉进行稳定性考察
精制前后聚合物制备的胶束冻干制剂在室温25℃下干燥器内放置15天后各取1瓶,以生理盐水5ml复溶,考察了复溶时间、粒径及分布。将复溶后的制剂溶液在室温25℃下放置24小时,监测了粒径及分布和包封率的变化。结果见表11和表12。
表11 紫杉醇胶束制剂的复溶时间、溶剂的粒径及分布结果
表12 紫杉醇胶束溶液包封率随时间的变化
结果表明,以本发明精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制得的紫杉醇聚合物胶束冻干粉复溶时间短,复溶后的粒径稳定性比精制前聚合物(即粗品)制得的紫杉醇聚合物胶束更好。以本发明精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制得的紫杉醇聚合物胶束冻干粉复溶后24小时胶束溶液仍保持淡蓝色澄清透明,紫杉醇的包封率基本保持不变。实施例5-8和实施例10中精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制得的紫杉醇聚合物胶束冻干粉复溶时间短,复溶后的粒径稳定性更好,复溶后24小时胶束溶液仍保持淡蓝色澄清透明,紫杉醇的包封率基本保持不变。
中国专利CN 103768013 A涉及的纯化方法能有效降低聚合物中的锡含量,以其精制前后的聚合物制备得到的紫杉醇聚合物胶束溶液粒径随时间的变化如下表13:
表13
0hr | 6hr | 10hr | 15hr | 24hr | |
精制前粒径nm | 30.2±0.4 | 29.2±0.4 | 28.8±0.5 | 40.8±1.4 | 白色悬浮物 |
精制后粒径nm | 29.5±0.5 | 28.7±0.4 | 28.0±0.3 | 29.8±0.5 | 38.5±0.1 |
数据显示,以本发明精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制得的紫杉醇聚合物胶束冻干粉复溶时间短,复溶24小时后的粒径稳定性更好。
本发明精制方法中各参数的变化(如数据、有机溶剂种类的变化)均能够得到分子量分布为1.15以下的聚乙二醇单甲醚-聚乳酸嵌段共聚物精制品,以该精制后的聚乙二醇单甲醚-聚乳酸嵌段共聚物制备得到的紫杉醇聚合物胶束粒径小且均一,冻干粉稳定性优异,复溶效果好。因此本发明制备方法中任意参数的组合均可实现本发明的目的。在此不再赘述。
Claims (6)
1.一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法,其特征在于,采用逐步降温法,包括步骤:
(1)将聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品与有机溶剂甲混合,在40℃-55℃使粗品充分溶解,然后降温至30℃-40℃静置,使混合物充分分层至上层澄清,收集上层清液;将上层清液温度降至10℃-20℃后静置析出沉淀,收集沉淀;
(2)将步骤(1)中的沉淀用有机溶剂乙溶解,在冰乙醚或冰甲基叔丁基醚中沉淀,收集沉淀物,真空干燥,得到精制的聚乙二醇单甲醚-聚乳酸嵌段共聚物。
2.根据权利要求1所述的精制方法,其特征在于,步骤(1)中,所述有机溶剂甲为甲醇、乙醇、异丙醇中的一种,或者为甲醇、乙醚、甲基叔丁基醚中一种与乙腈、丙酮、二氯甲烷、三氯甲烷中一种的两两组合。
3.根据权利要求2所述的精制方法,其特征在于,所述有机溶剂甲采用两两组合时,甲醇、乙醚、甲基叔丁基醚中的一种与乙腈、丙酮、二氯甲烷、三氯甲烷中的一种的体积比为1.5-10:1。
4.根据权利要求1或2所述的精制方法,其特征在于,步骤(1)中,所述每克聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品中有机溶剂甲的用量为7ml-50ml。
5.根据权利要求1所述的精制方法,其特征在于,步骤(2)中,所述有机溶剂乙为乙腈、二氯甲烷、氯仿或丙酮。
6.根据权利要求1所述的精制方法,其特征在于,所述聚乙二醇单甲醚-聚乳酸嵌段共聚物粗品是以聚乙二醇单甲醚和D,L-丙交酯为单体,在辛酸亚锡的催化作用下进行配位开环聚合得到。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610051218.9A CN106995528B (zh) | 2016-01-26 | 2016-01-26 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610051218.9A CN106995528B (zh) | 2016-01-26 | 2016-01-26 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106995528A true CN106995528A (zh) | 2017-08-01 |
CN106995528B CN106995528B (zh) | 2020-01-10 |
Family
ID=59428586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610051218.9A Active CN106995528B (zh) | 2016-01-26 | 2016-01-26 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106995528B (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108794733A (zh) * | 2018-05-02 | 2018-11-13 | 中国科学院理化技术研究所 | 一种嵌段共聚物相容剂及其应用 |
CN110585140A (zh) * | 2019-07-08 | 2019-12-20 | 苏州海特比奥生物技术有限公司 | 一种和厚朴酚纳米聚合物胶束冻干制剂及其制备方法 |
EP3556352A4 (en) * | 2016-12-14 | 2020-07-22 | Samyang Biopharmaceuticals Corporation | COMPOSITION OF AMPHIPHILIC SEQUENCED COPOLYMER WITH IMPROVED MICELLAR STABILITY AND PHARMACEUTICAL COMPOSITION COMPRISING IT |
WO2023083265A1 (zh) * | 2021-11-10 | 2023-05-19 | 北京渼颜空间生物医药有限公司 | 一种聚乙二醇单甲醚聚乳酸共聚物及其制备方法和其应用 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005040247A1 (en) * | 2003-10-24 | 2005-05-06 | Samyang Corporation | Polymeric composition for drug delivery |
US20080081075A1 (en) * | 2006-10-02 | 2008-04-03 | National Tsing Hua University | Multifunctional mixed micelle of graft and block copolymers and preparation thereof |
CN101804066A (zh) * | 2010-03-26 | 2010-08-18 | 四川大学 | Mpeg-pla两嵌段共聚物在制备医用防粘连材料中的用途 |
CN102219892A (zh) * | 2010-06-30 | 2011-10-19 | 上海谊众生物技术有限公司 | 聚乙二醇单甲醚-dl-聚乳酸嵌段共聚物的制备方法 |
CN104761710A (zh) * | 2014-02-14 | 2015-07-08 | 苏州海特比奥生物技术有限公司 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物及其制备方法 |
CN104892909A (zh) * | 2015-06-03 | 2015-09-09 | 深圳万乐药业有限公司 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的制备方法 |
-
2016
- 2016-01-26 CN CN201610051218.9A patent/CN106995528B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005040247A1 (en) * | 2003-10-24 | 2005-05-06 | Samyang Corporation | Polymeric composition for drug delivery |
US20080081075A1 (en) * | 2006-10-02 | 2008-04-03 | National Tsing Hua University | Multifunctional mixed micelle of graft and block copolymers and preparation thereof |
CN101804066A (zh) * | 2010-03-26 | 2010-08-18 | 四川大学 | Mpeg-pla两嵌段共聚物在制备医用防粘连材料中的用途 |
CN102219892A (zh) * | 2010-06-30 | 2011-10-19 | 上海谊众生物技术有限公司 | 聚乙二醇单甲醚-dl-聚乳酸嵌段共聚物的制备方法 |
CN104761710A (zh) * | 2014-02-14 | 2015-07-08 | 苏州海特比奥生物技术有限公司 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物及其制备方法 |
CN104892909A (zh) * | 2015-06-03 | 2015-09-09 | 深圳万乐药业有限公司 | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的制备方法 |
Non-Patent Citations (2)
Title |
---|
韩哲文,等: "《高分子科学教程》", 31 December 2001, 华东理工大学出版社 * |
顾明杰,等: "载姜黄素聚乙二醇单甲醚- 聚乳酸纳米粒的制备及体内外评价", 《上海交通大学学报医学版》 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3556352A4 (en) * | 2016-12-14 | 2020-07-22 | Samyang Biopharmaceuticals Corporation | COMPOSITION OF AMPHIPHILIC SEQUENCED COPOLYMER WITH IMPROVED MICELLAR STABILITY AND PHARMACEUTICAL COMPOSITION COMPRISING IT |
US11179466B2 (en) | 2016-12-14 | 2021-11-23 | Samyang Holdings Corporation | Amphiphilic block copolymer composition having enhanced micelle stability, and pharmaceutical composition comprising same |
CN108794733A (zh) * | 2018-05-02 | 2018-11-13 | 中国科学院理化技术研究所 | 一种嵌段共聚物相容剂及其应用 |
CN108794733B (zh) * | 2018-05-02 | 2021-03-16 | 中国科学院理化技术研究所 | 一种嵌段共聚物相容剂及其应用 |
CN110585140A (zh) * | 2019-07-08 | 2019-12-20 | 苏州海特比奥生物技术有限公司 | 一种和厚朴酚纳米聚合物胶束冻干制剂及其制备方法 |
WO2023083265A1 (zh) * | 2021-11-10 | 2023-05-19 | 北京渼颜空间生物医药有限公司 | 一种聚乙二醇单甲醚聚乳酸共聚物及其制备方法和其应用 |
Also Published As
Publication number | Publication date |
---|---|
CN106995528B (zh) | 2020-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103772686B (zh) | 一种两亲性嵌段共聚物及其制备方法、以及该共聚物与抗肿瘤药物形成的胶束载药系统 | |
Lin et al. | Amphiphilic miktoarm star copolymer (PCL) 3-(PDEAEMA-b-PPEGMA) 3 as pH-sensitive micelles in the delivery of anticancer drug | |
CN103768013A (zh) | 以精制两亲性嵌段共聚物为载体的紫杉醇聚合物胶束 | |
CN104761710A (zh) | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物及其制备方法 | |
US11179466B2 (en) | Amphiphilic block copolymer composition having enhanced micelle stability, and pharmaceutical composition comprising same | |
CN102218027A (zh) | 一种包载难溶性抗肿瘤药物的聚合物胶束冻干制剂 | |
Ju et al. | A biodegradable polyphosphoester-functionalized poly (disulfide) nanocarrier for reduction-triggered intracellular drug delivery | |
CN104758255A (zh) | 一种姜黄素胶束载药系统及其制备方法 | |
CN106995528A (zh) | 一种聚乙二醇单甲醚-聚乳酸嵌段共聚物的精制方法 | |
CN105232459B (zh) | 一种复溶自组装的水难溶性药物聚合物胶束组合物及其制备方法 | |
CN105213348B (zh) | 一种还原响应性的载药纳米颗粒及其制备方法和用途 | |
Han et al. | A novel cabazitaxel-loaded polymeric micelle system with superior in vitro stability and long blood circulation time | |
Tabassi et al. | Sustained release drug delivery using supramolecular hydrogels of the triblock copolymer PCL–PEG–PCL and α-cyclodextrin | |
CN111978520B (zh) | 聚乙二醇单甲醚-聚乳酸嵌段共聚物、聚合物胶束药物以及制备方法 | |
Kim et al. | Photocrosslinkable Poly (ε‐caprolactone)‐b‐Hyperbranched Polyglycerol (PCL‐b‐hbPG) with Improved Biocompatibility and Stability for Drug Delivery | |
CN107028913B (zh) | 一种聚己内酯-环糊精给药纳米粒的制备方法 | |
CN104856950A (zh) | 一种紫杉醇胶束载药系统及其制备方法 | |
Liu et al. | Self-assembled filomicelles prepared from polylactide-poly (ethylene glycol) diblock copolymers for sustained delivery of cycloprotoberberine derivatives | |
AU2007298674A1 (en) | Compositions and methods for pH targeted drug delivery | |
Feng et al. | Oridonin-loaded poly (ε-caprolactone)–poly (ethylene oxide)–poly (ε-caprolactone) copolymer nanoparticles: Preparation, characterization, and antitumor activity on mice with transplanted hepatoma | |
CN105250225A (zh) | 一种康普瑞汀纳米聚合物胶束冻干制剂及其制备方法 | |
CN105399931B (zh) | 一种两亲性嵌段共聚物及其制备方法和应用 | |
CN110585140A (zh) | 一种和厚朴酚纳米聚合物胶束冻干制剂及其制备方法 | |
CN101632834A (zh) | 疏水药物肿瘤靶向传递的磁性纳米载体及其制备方法 | |
CN113262309B (zh) | 一种负载抗肿瘤药物的超支化-嵌段共接枝药物载体及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230505 Address after: Room 309, Chuangye Building, No. 199 Wensan Road, Xihu District, Hangzhou City, Zhejiang Province, 310012 Patentee after: Hangzhou Dihua Biotechnology Co.,Ltd. Address before: 310058 No. 388 Tong Road, Hangzhou, Zhejiang, Yuhang Patentee before: ZHEJIANG University |
|
TR01 | Transfer of patent right |