WO1997041894A1 - Composition aqueuse micellaire et procede de solubilisation d'un medicament hydrophobe - Google Patents
Composition aqueuse micellaire et procede de solubilisation d'un medicament hydrophobe Download PDFInfo
- Publication number
- WO1997041894A1 WO1997041894A1 PCT/JP1997/001566 JP9701566W WO9741894A1 WO 1997041894 A1 WO1997041894 A1 WO 1997041894A1 JP 9701566 W JP9701566 W JP 9701566W WO 9741894 A1 WO9741894 A1 WO 9741894A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- degree
- hydrophobic drug
- alkyl group
- aqueous composition
- 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
-
- 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
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
-
- 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
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to a technique for solubilizing a hydrophobic drug using a chitosan derivative having a hydrophilic group and a hydrophobic group.
- JP-B-63-28414 discloses a formulation in which chitin and Z or chitosan are improved by ffl to improve the dissolution property of a hydrophobic drug.
- Japanese Patent Application Laid-Open No. 4-180336 discloses a preparation in which the solubility and dissolution properties of a hydrophobic drug in water are improved by using low molecular weight chitosan.
- a formulation has been disclosed in which a soluble low molecular weight chitosan and an alkali insoluble high molecular weight chitosan are ffl-mixed to improve the solubility and dissolution of a hydrophobic drug in water.
- An object of the present invention is to provide a pharmaceutical composition containing a hydrophobic drug capable of forming a micelle-like aqueous composition, whereby the formulation of a drug which cannot be injected because of water insolubility in an injectable preparation, orally Of poorly absorbable drugs due to poor solubility Absorption promotion is possible.
- the present inventors have made intensive investigations to achieve the above object, Cal Bokishi one C as a hydrophilic group, - 5 alkyl groups, an alkyl group or carbon number of 9-2 ⁇ fat carbon 3 ⁇ 49 ⁇ 21 as a hydrophobic group
- the present inventors have found that a chitosan derivative having an aromatic group as a guide forms a micelle-like aqueous composition with a hydrophobic drug, and completed the present invention.
- the first invention of the present application provides (1) a hydrophobic drug and (2) the following formula (I):
- i represents a hydrogen atom, an acetyl group, an alkyl group having 9 to 21 carbon atoms or an aliphatic acyl group having 9 to 21 carbon atoms
- R 2 represents a hydrogen atom or a carboxy-ds alkyl group.
- degree of deacetylation of the N-acetyl group represented by R ′ is 70 to 1 () 0%, and ⁇ the case where one monosaccharide is deacetylated is assumed to be 00%).
- degree of substitution of the alkyl group represented by 'a is 10 ⁇ 100% (1] and 100% if one is replaced per monosaccharide),
- Karubokishi represented by R 2 C, - substituted 5 alkyl group A chitosan derivative or a chitosan derivative having a molecular weight in terms of lipoxymethylchitin of 150,000 or less, with a degree of 50 to 200% (2) is substituted when two monosaccharides are substituted).
- the second invention of the present application relates to a method for solubilizing a hydrophobic drug, wherein the hydrophobic drug is mixed with the chitosan conductor or a salt thereof to form a micelle-like aqueous composition. This is a method for solubilizing a hydrophobic drug.
- the term “molecular weight in terms of carboxymethyl chitin” refers to the above formula (before deriving an alkyl group having 9 to 21 carbon atoms or an aliphatic acyl group having 9 to 21 carbon atoms represented by R ′ in U). Molecule converted to molecular weight of raw material ruboxymethylchitin Refers to the amount.
- the alkyl group having 9 to 21 carbon atoms represented by R ′ may be any of a direct-selling form or a branched form, but is preferably a linear C ; i-21 alkyl group, The following formula:
- Alkyl groups represented by, specifically, nonyl group, decyl group, pentadecyl group, dodecyl group (radiuryl group), tridecyl group, tetradecyl group (myristyl group), pentayl decyl group, hexadecyl group ( A cetyl group), a heptane decyl group, an octane decyl group (a stearyl group), a nonadecyl group, an eicosyl group, and a heneicosyl group.
- the aliphatic Ashiru group having a carbon number of 9-2 1, straight ⁇ or branched, may be either saturated or Fu ⁇ sum, preferably a saturated C y straight ⁇ - 21 aliphatic Ashiru group, i.e., the following equation :
- nCH s (wherein, n 7 to 1 9 integer :)
- the alkyl portion may be linear or branched, but the alkyl portion may be a direct-sellable carboxy- 5- alkyl group, that is, the following formula: :
- nC00H (wherein, n an integer of 1 to 5)
- a carboxymethyl group a 2-carboxyethyl group, a 3-forceroxypropyl group, a 4-forceroxybutyl group, and a 5-forceroxypentyl group.
- the chitosan derivative ffl in the present invention can be produced, for example, as follows. Wear.
- chitin having a molecular weight of 150,000 or less, preferably 1,000,100,000 is treated with a base, preferably an alkali metal hydroxide such as sodium hydroxide to form an alkali metal.
- a base preferably an alkali metal hydroxide such as sodium hydroxide to form an alkali metal.
- X represents a halogen atom, preferably a chlorine atom, and aIk represents an alkylene group.
- R 3 represents an alkyl group having 820 carbon atoms.
- an aldehyde represented by the formula for example, lauryl aldehyde
- a carboxy-C 5 alkyl group as a hydrophilic group and a chitosan with an alkyl group of 921 carbon atoms as a hydrophobic group are introduced.
- Derivatives eg, laurylating power; repoxy methyl chitosan
- carboxy - in C 5 Arukiruki Bok Sun e.g., carboxymethyl chitosan
- a suitable solvent e.g., benzyl ether
- R " 1 represents an alkyl group having 820 carbon atoms
- X represents a halogen atom, preferably a chlorine atom.
- An acid halide represented by for example, laurate yl chloride
- esters e.g., lauric acid Echiru
- Karubokishi as a parent water-based C, - 5 alkyl group
- Chitosan derivatives eg, lauroylated carboxymethyl chitosan
- Hydrophobic drugs are drugs that cannot be formulated as injections when used as pharmaceuticals because of their poor solubility in water, and drugs that have insufficient oral absorbability. Examples thereof include anticancer drugs such as taxol and adriamycin, antibiotics such as macrolides, and other water-soluble anti-inflammatory drugs, antipyretic analgesics, gastrointestinal drugs, and vitamins.
- the present invention provides a micelle-like aqueous composition or a dry composition thereof, comprising a hydrophobic drug and the chitosan derivative.
- the micelle-like aqueous composition referred to in the present invention means a solution-like composition in which a hydrophobic drug is uniformly dispersed in an aqueous solvent, becomes visually clear or emulsion, and the drug is solubilized.
- the aqueous solvent used here includes distilled water and the like. Further, salts, saccharides, acids and the like may be added as appropriate, and examples thereof include distilled water for injection, physiological saline, sugar solutions, infusions, and buffers. Further, the aqueous solvent may contain a water-soluble organic solvent, for example, a small amount of ethanol, as long as it does not show toxicity.
- a composition obtained by appropriately drying the aqueous composition by a conventional drying means is referred to as a dried composition.
- Mixing ratio of the hydrophobic drug and the chitosan derivative is in a weight ratio, 1:. 0 5-1: it forces preferably 5.
- the means for solubilization is not particularly limited, but it is preferable to apply a temperature when swelling the chitosan derivative, and the temperature is preferably 20 to 100 ° C, more preferably 40 to 60 ° C. is there.
- a temperature when swelling the chitosan derivative is preferably 20 to 100 ° C, more preferably 40 to 60 ° C. is there.
- sonication is preferred.
- the amount of dissolution is affected by the ultrasonic treatment time, and the treatment time is preferably 10 to 120 minutes, and more preferably 20 to 40 minutes.
- 2 parts by weight of a chitosan derivative is heated and stirred to swell and dissolve the polymer.
- add 1 part by weight of hydrophobic drug When subjected to ultrasonic treatment, a micelle-like aqueous composition in which the drug is uniformly dispersed can be obtained.
- a sterilized solution for example, sterilized distilled water is used in preparing a solution of the aqueous composition or the like
- the pharmaceutical composition of the present invention may be either a micelle-like aqueous composition or a dry composition thereof, but the dry composition is more preferable because the hydrophobic substance is stably stored.
- a dry composition there may be mentioned, for example, a method in which a solution once formed into an aqueous composition is dried by various drying means.
- a drying method there are a freeze drying method, a spray drying method, a reduced pressure drying method and the like, but a freeze drying method is particularly preferable.
- the micelle-like aqueous composition or dry composition of the present invention thus obtained can be used as a formulation for injection I, oral preparation, suppository, transmucosal administration preparation, external preparation and the like.
- the present invention is not limited only to these descriptions, but includes manufacturing equipment, manufacturing methods, drug types and blending amounts, and polymers. It is possible to arbitrarily set the molecular weight, the type of the substituent, the degree of substitution, and the amount of the compound within the range disclosed in the present specification.
- the molecular weight of carboxymethyl chitin was measured by the method of Inoue et al. (Inoue Y., Kaneko M. and Tokura S., Rep. Progr. Polym. Phys. Jap., 25, 759 (1982)).
- the degree of deacetylation, degree of carboxymethylation, and degree of laurylation were determined by measuring chitin and its derivative with an elemental analyzer (240 CHN elemental analyzer Perkin Elmer Co., Ltd.). was calculated.
- adriamycin hydrochloride Approximately 10 mg was weighed out, added with water im, and stirred with tft to dissolve. About 5 mg of sodium bicarbonate was added thereto with stirring to obtain a free adriamycin suspension.
- adriamycin hydrochloride About 50 mg was removed, and 5 ml of water was added and dissolved. About 25 mg of sodium bicarbonate was added thereto with stirring. In order to remove the deposited red precipitate, the mixture was filtered through a 5 m membrane filter. As a filtrate, a slightly red saturated solution of adriamicin was obtained.
- Example 1 The solutions obtained in Example 1, Control Example 1 and Control Example 2 were concentrated (3000 rpm, 20 minutes) using a centrifuge tube (Centricon, Grace Japan, MWCO 10000) equipped with an ultrafiltration membrane. ) did. The concentrated solution remaining in the upper layer of the tube without passing through the ultrafiltration membrane was obtained in the lower layer. The adriamicin-' ⁇ properties were evaluated from the colors of the upper and lower layers of the centricon tube.
- Control Example 2 the upper layer was milky white based on micelles, and the lower layer was colorless and clear. This proved that micelles did not pass through the ultrafiltration membrane (MWC01 0000).
- Example I the upper layer was red and milky, and the lower layer was clear and colorless. That is, if adriamicin was dissolved in the molecular state, it would pass through the ultrafiltration membrane, indicating that in the micellar solution, adriamicin was encapsulated in the micelle without being dissolved in the molecular state. Furthermore, the red color of the upper layer is clearly higher than that of the upper layer of the adriamycin solution of Comparative Example 1, and is lower than the saturation solubility by being sealed with adoramicin power; 'laurylated carboxymethyl chitosan. The above was confirmed to be solubilized.
- the molecular weight was 50,000, the sodium salt, the degree of laurylation was 19%, the degree of carboxymethylation was 200%, and the degree of deacetylation was 90%).
- the low molecular weight perylated carboxymethyl chitosan obtained in Production Example 6 (potassium methoxymethyl chitin molecular weight 2000, sodium salt, degree of laurylation 25%, degree of carboxymethylation] 40%, degree of deacetylation 100%)
- the same treatment as in Example 3 was performed to obtain a micelle-like aqueous composition.
- Particles of the preparations of Examples 2 to 8 and Control 3 were appropriately diluted with '1 phosphate buffer (PH.4) and measured by dynamic light scattering.
- Distribution display weight distribution
- Table 3 summarizes the chitosan derivatives used.
- Table 4 shows the results.
- the saturated solubility of taxol was 0.32 g Zm1 at pH 7.4, whereas the solubility in Example 28 was significantly increased.
- the particle size distribution of the micelles showed almost a single peak in weight distribution, and the average particle size was about 10 nm.
- the micelles were solubilized by forming a micelle-like aqueous composition.
- each of the micelle-like aqueous compositions was a clear or whitish milky white solution. Possibilities for industrial lj
- the hydrophobicity of the compound is increased by hydrophobicity:
- the drug was solubilized.
- Takitool was solubilized several thousand times the saturation solubility.
- the present invention can be applied to other hydrophobic drugs without being limited to taxol, and can be formulated as injections even if injection was difficult due to water insolubility. Due to its poor solubility, absorption enhancement effect can be expected for poorly absorbed drugs.
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Medicinal Chemistry (AREA)
- Public Health (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53974797A JP4124483B2 (ja) | 1996-05-09 | 1997-05-09 | ミセル様水性組成物及び疎水性薬物の可溶化方法 |
| EP97920943A EP0923943A4 (en) | 1996-05-09 | 1997-05-09 | AQUEOUS MICELLAR COMPOSITION AND METHOD FOR SOLUBILIZING A HYDROPHOBIC DRUG |
| AU27121/97A AU2712197A (en) | 1996-05-09 | 1997-05-09 | Micellar aqueous composition and method for solubilizing hydrophobic drug |
| CA002253737A CA2253737A1 (en) | 1996-05-09 | 1997-05-09 | Micellar aqueous composition and method for solubilizing hydrophobic drug |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11511696 | 1996-05-09 | ||
| JP8/115116 | 1996-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997041894A1 true WO1997041894A1 (fr) | 1997-11-13 |
Family
ID=14654648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1997/001566 Ceased WO1997041894A1 (fr) | 1996-05-09 | 1997-05-09 | Composition aqueuse micellaire et procede de solubilisation d'un medicament hydrophobe |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0923943A4 (ja) |
| JP (1) | JP4124483B2 (ja) |
| KR (1) | KR20000010862A (ja) |
| AU (1) | AU2712197A (ja) |
| CA (1) | CA2253737A1 (ja) |
| WO (1) | WO1997041894A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999018998A3 (en) * | 1997-10-09 | 1999-07-22 | Univ Liverpool | Delivery system |
| CN100450549C (zh) * | 2006-01-16 | 2009-01-14 | 中国药科大学 | 一种药物增溶载体及其制备方法和应用 |
| US7511023B2 (en) * | 2001-08-18 | 2009-03-31 | Korea Institute Of Science And Technology | Anticancer drug-chitosan complex forming self-aggregates and preparation method thereof |
| JP2011521945A (ja) * | 2008-05-29 | 2011-07-28 | クォン,スン−チャン | 薬物送達システム |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100532562B1 (ko) * | 2002-01-09 | 2005-12-02 | 메디칸(주) | 주사제로 인체주입이 가능한 스펀지구조를 갖는 고체키토산분말과 그 제조방법 및 주입장치 |
| US7659310B2 (en) | 2004-04-27 | 2010-02-09 | Formatech, Inc. | Methods of enhancing solubility of agents |
| US7345093B2 (en) | 2004-04-27 | 2008-03-18 | Formatech, Inc. | Methods of enhancing solubility of compounds |
| CA2781529C (en) | 2009-09-23 | 2017-10-24 | Indu Javeri | Methods for the preparation of liposomes comprising docetaxel |
| US10143652B2 (en) | 2009-09-23 | 2018-12-04 | Curirx Inc. | Methods for the preparation of liposomes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134646A (en) * | 1979-04-06 | 1980-10-20 | Kureha Chem Ind Co Ltd | Amphoteric ion exchanger |
| JPS6270401A (ja) * | 1985-09-24 | 1987-03-31 | Fuji Boseki Kk | カルボキシアルキルキトサン粒状体の製造方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2638156B2 (ja) * | 1988-11-11 | 1997-08-06 | 優樹 小田切 | 薬剤組成物 |
| FR2721933B1 (fr) * | 1994-06-30 | 1996-09-27 | Gattefosse Ets Sa | Derives du chitosane, procede pour sa preparation et composition cosmetique contenant de tels derives |
-
1997
- 1997-05-09 KR KR1019980709005A patent/KR20000010862A/ko not_active Withdrawn
- 1997-05-09 CA CA002253737A patent/CA2253737A1/en not_active Abandoned
- 1997-05-09 WO PCT/JP1997/001566 patent/WO1997041894A1/ja not_active Ceased
- 1997-05-09 JP JP53974797A patent/JP4124483B2/ja not_active Expired - Fee Related
- 1997-05-09 AU AU27121/97A patent/AU2712197A/en not_active Abandoned
- 1997-05-09 EP EP97920943A patent/EP0923943A4/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134646A (en) * | 1979-04-06 | 1980-10-20 | Kureha Chem Ind Co Ltd | Amphoteric ion exchanger |
| JPS6270401A (ja) * | 1985-09-24 | 1987-03-31 | Fuji Boseki Kk | カルボキシアルキルキトサン粒状体の製造方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0923943A4 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999018998A3 (en) * | 1997-10-09 | 1999-07-22 | Univ Liverpool | Delivery system |
| US6702995B1 (en) | 1997-10-09 | 2004-03-09 | Theryte, Ltd. | Delivery system |
| US7511023B2 (en) * | 2001-08-18 | 2009-03-31 | Korea Institute Of Science And Technology | Anticancer drug-chitosan complex forming self-aggregates and preparation method thereof |
| CN100450549C (zh) * | 2006-01-16 | 2009-01-14 | 中国药科大学 | 一种药物增溶载体及其制备方法和应用 |
| JP2011521945A (ja) * | 2008-05-29 | 2011-07-28 | クォン,スン−チャン | 薬物送達システム |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2712197A (en) | 1997-11-26 |
| CA2253737A1 (en) | 1997-11-13 |
| JP4124483B2 (ja) | 2008-07-23 |
| EP0923943A1 (en) | 1999-06-23 |
| KR20000010862A (ko) | 2000-02-25 |
| EP0923943A4 (en) | 2001-02-21 |
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