AU710769B2 - A chitosan polymer having a specific degree of acetylation - Google Patents

A chitosan polymer having a specific degree of acetylation Download PDF

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Publication number
AU710769B2
AU710769B2 AU39433/95A AU3943395A AU710769B2 AU 710769 B2 AU710769 B2 AU 710769B2 AU 39433/95 A AU39433/95 A AU 39433/95A AU 3943395 A AU3943395 A AU 3943395A AU 710769 B2 AU710769 B2 AU 710769B2
Authority
AU
Australia
Prior art keywords
chitosan
acetylation
chitosans
molecular weight
degree
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
Application number
AU39433/95A
Other languages
English (en)
Other versions
AU3943395A (en
Inventor
Per Artursson
Nicolaas Schipper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AstraZeneca AB
Original Assignee
Astra AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Astra AB filed Critical Astra AB
Publication of AU3943395A publication Critical patent/AU3943395A/en
Application granted granted Critical
Publication of AU710769B2 publication Critical patent/AU710769B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
    • C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
    • C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Nutrition Science (AREA)
  • Physiology (AREA)
  • Molecular Biology (AREA)
  • Inorganic Chemistry (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
AU39433/95A 1994-11-14 1995-11-13 A chitosan polymer having a specific degree of acetylation Ceased AU710769B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9403905A SE9403905D0 (sv) 1994-11-14 1994-11-14 New formulations
SE9403905 1994-11-14
PCT/SE1995/001342 WO1996020730A1 (en) 1994-11-14 1995-11-13 A chitosan polymer having a specific degree of acetylation

Publications (2)

Publication Number Publication Date
AU3943395A AU3943395A (en) 1996-07-24
AU710769B2 true AU710769B2 (en) 1999-09-30

Family

ID=20395954

Family Applications (1)

Application Number Title Priority Date Filing Date
AU39433/95A Ceased AU710769B2 (en) 1994-11-14 1995-11-13 A chitosan polymer having a specific degree of acetylation

Country Status (9)

Country Link
EP (1) EP0792330A1 (ja)
JP (1) JPH10509207A (ja)
AU (1) AU710769B2 (ja)
CA (1) CA2203632A1 (ja)
FI (1) FI972056A (ja)
IS (1) IS4469A (ja)
NO (1) NO972172D0 (ja)
SE (1) SE9403905D0 (ja)
WO (1) WO1996020730A1 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6716970B2 (en) 2000-04-21 2004-04-06 Adjuvant Pharmaceuticals, Llc Water soluble, randomly substituted partial N-partial O-acetylated chitosan, preserving compositions containing chitosan, and processes for making thereof
US20020018732A1 (en) * 2000-04-21 2002-02-14 Hung William M. Preserving compositions containing chitosan and processes for making water soluble O-acetylated chitosan and chitosan
GB0315632D0 (en) 2003-07-04 2003-08-13 West Pharm Serv Drug Res Ltd Pharmaceutical formulations
US7125967B2 (en) 2003-10-08 2006-10-24 Adjuvant Pharmaceuticals, Llc Water-soluble chitosan having low endotoxin concentration and methods for making and using the same
US20060287278A1 (en) * 2005-06-21 2006-12-21 Zhenze Hu Method for improving water solubility of chitosan
FR3016882A1 (fr) 2014-01-30 2015-07-31 Sofradim Production Procede de preparation de chitosane a haut degre d’acetylation
EP3034612A1 (en) * 2014-12-16 2016-06-22 Greenaltech, S.L. Chitin and chitosan producing methods
EP3372234B1 (en) * 2015-11-04 2021-09-29 Stelic Institute & Co., Inc. Complex comprising rnai molecule and n-acetylated chitosan
WO2024054707A2 (en) 2022-09-08 2024-03-14 Luna Labs Usa, Llc Layer-by-layer delivery of active agents

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873092A (en) * 1987-05-21 1989-10-10 Murata Kikai Kabushiki Kaisha Slow-releasing preparation
GB8904370D0 (en) * 1989-02-25 1989-04-12 Cosmas Damian Ltd Liquid delivery compositions

Also Published As

Publication number Publication date
JPH10509207A (ja) 1998-09-08
FI972056A0 (fi) 1997-05-14
IS4469A (is) 1997-04-22
SE9403905D0 (sv) 1994-11-14
FI972056A (fi) 1997-05-14
WO1996020730A1 (en) 1996-07-11
NO972172L (no) 1997-05-12
EP0792330A1 (en) 1997-09-03
CA2203632A1 (en) 1996-07-11
NO972172D0 (no) 1997-05-12
AU3943395A (en) 1996-07-24

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired