ISOLATION OF UNREDUCED OLIGOSACCHARIDES

A preparative scale method for the isolation of unreduced oligosaccharides of glycoproteins and glycohormones having a N-linked oligosaccharide structure is disclosed. The method employs hydrazin­olysis of the glycoprotein or glycohormone under reaction conditions to cause cleavage at the N-linked s...

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Bibliographic Details
Main Authors DWEK, RAYMOND ALLEN, RADEMACHER, THOMAS WILLIAM
Format Patent
LanguageEnglish
Published 09.10.1991
Subjects
CHEMISTRY
DERIVATIVES THEREOF
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
NUCLEIC ACIDS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC CHEMISTRY
PEPTIDES
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCESOR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- ORPOLYSACCHARIDES
SUGAR INDUSTRY
SUGARS
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Summary:A preparative scale method for the isolation of unreduced oligosaccharides of glycoproteins and glycohormones having a N-linked oligosaccharide structure is disclosed. The method employs hydrazin­olysis of the glycoprotein or glycohormone under reaction conditions to cause cleavage at the N-linked sites, producing a mixture having as a major component a de-N-acetylated hydrazone derivative of the oligo­saccharides, followed by N-acylation of the hydrazone derivative, acid-catalysis of the hydrazone derivative to produce unreduced oligosaccharides, and subjecting the resulting unreduced oligosaccharides to cellulose column chromatography to remove contaminants and to recover the unreduced oligosaccharides.
Bibliography:Application Number: EP19860870123