Analysis of linkage positions in Saccharomyces cerevisiae D-mannans by the reductive-cleavage method
| Autor: | Paul V. Trescony, Gary R. Gray, James U. Bowie |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
chemistry.chemical_classification
biology Chemical Phenomena Chemistry Stereochemistry Organic Chemistry Saccharomyces cerevisiae Glycosidic bond General Medicine biology.organism_classification Biochemistry Analytical Chemistry Catalysis Mannans chemistry.chemical_compound Trimethylsilyl trifluoromethanesulfonate Molecule Triethylsilane Oxidation-Reduction Boron trifluoride Mannan |
| Zdroj: | Carbohydrate research. 125(2) |
| ISSN: | 0008-6215 |
| Popis: | The positions of linkage in the d -mannans derived from Saccharomyces cerevisiae X2180 and its mutants, mnn1, mnn2, and mnn4, were established by perethylation and subsequent reductive cleavage with triethylsilane in the presence of boron trifluoride etherate (BF3 · Et2O) or trimethylsilyl trifluoromethanesulfonate. With the latter as the catalyst, all glycosidic carbon-oxygen bonds were cleaved, to produce a mixture of ethylated 1,5-anhydro- d -mannitol derivatives. With BF3 · Et2O as the catalyst, 2-, 3-, and 6-linked residues were incompletely cleaved, and residues linked at both O-2 and O-6 were not cleaved at all. It was concluded that reductive cleavage is an attractive method for determination of the structure of polysaccharides. |
| Databáze: | OpenAIRE |
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