beta-elimination of glucosyluronic residues during methylation of an acidic polysaccharide from Erwinia chrysanthemi CU 643

Authors
Yang, BY Montgomery, R
Citation
By. Yang et R. Montgomery, beta-elimination of glucosyluronic residues during methylation of an acidic polysaccharide from Erwinia chrysanthemi CU 643, CARBOHY RES, 332(3), 2001, pp. 317-323
Citations number
20
Categorie Soggetti
Agricultural Chemistry","Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
CARBOHYDRATE RESEARCH
ISSN journal
00086215 → ACNP
Volume
332
Issue
3
Year of publication
2001
Pages
317 - 323
Database
ISI
SICI code
0008-6215(20010604)332:3<317:BOGRDM>2.0.ZU;2-L
Abstract
The Erwinia chrysanthemi CU643 EPS has a linear hexasaccharide repeating un it in which a Clinked uronic acid residue is present. The EPS was methylate d by either the NaOH-Me2SO-MeI or Li-dimsyl procedure. MALDI-TOF MS analysi s of the methylated products indicates that the beta -eliminative degradati on occurs during the methylation, as characterized by serial fragments of t he hexasaccharide repeating units. The degradation was clearly defined from the methylation of a glucosyluronic-containing pyruvated pentasaccharide. (C) 2001 Elsevier Science Ltd. All rights reserved.