GB1013902A - Process for the preparation of polysaccharides - Google Patents

Process for the preparation of polysaccharides

Info

Publication number
GB1013902A
GB1013902A GB20073/62A GB2007362A GB1013902A GB 1013902 A GB1013902 A GB 1013902A GB 20073/62 A GB20073/62 A GB 20073/62A GB 2007362 A GB2007362 A GB 2007362A GB 1013902 A GB1013902 A GB 1013902A
Authority
GB
United Kingdom
Prior art keywords
sugar
ester
polyphosphoric acid
molecular weight
reaction
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.)
Expired
Application number
GB20073/62A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1013902A publication Critical patent/GB1013902A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H1/00—Processes for the preparation of sugar derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Polysaccharides are prepared by contacting a sugar containing a carboxyl junction with a polyphosphoric acid alkyl ester. The sugar may be an aldose, ketose, desoxy-sugar, amino-sugar, oligosaccharide, uronic acid or ester thereof, or a mixture of mono- and oligosaccharides such as are obtained by acid hydrolysis of cellulose or starch. Many sugars are specified. The polyphosphoric acid ester may be derived from an alkanol containing 1 to 3 carbon atoms. The reaction may be carried out by heating for some hours a solution of the sugar and polyphosphoric ester in an inert solvent such as diethyl phosphite, phosphoric acid trisdimethylamide, dimethyl sulphoxide, n-methyl pyrrolidone, formamide or dimethyl formamide. The reaction temperature may be 15-70 DEG C. The molecular weight of the products depends upon reaction conditions, low molecular weight products being obtained using a small quantity of polyphosphoric acid ester in dilute solution. High molecular weight products may be obtained by use of excess polyphosphoric acid ester in concentrated solution or in absence of a solvent. The reaction product may be isolated by precipitation, followed by dissolution in water, dialysation, and evaporation or freeze-drying. Formation of the polysaccharide from a pyranosoid sugar is as follows <FORM:1013902/C3/1> where X is a radical of polyphosphoric acid alkyl ester. According to reaction conditions, a phosphate-containing or a phosphate-free polysaccharide may be obtained. Examples describe the formation of polyglucosides, polyfructosides, polyribosides and poly-N-acetyl glucosamine.
GB20073/62A 1961-05-24 1962-05-24 Process for the preparation of polysaccharides Expired GB1013902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0033983 1961-05-24

Publications (1)

Publication Number Publication Date
GB1013902A true GB1013902A (en) 1965-12-22

Family

ID=7095351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20073/62A Expired GB1013902A (en) 1961-05-24 1962-05-24 Process for the preparation of polysaccharides

Country Status (1)

Country Link
GB (1) GB1013902A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252728A (en) * 1990-12-17 1993-10-12 Laboratorios Andromaco S.A. Process for obtaining polymers with antiviral activity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252728A (en) * 1990-12-17 1993-10-12 Laboratorios Andromaco S.A. Process for obtaining polymers with antiviral activity

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