Citation
R. Takano et al., Sulfation of polysaccharides using monomethyl sulfate, J CARB CHEM, 19(9), 2000, pp. 1185-1190
Citations number
14
Categorie Soggetti
Chemistry & Analysis
Journal title
JOURNAL OF CARBOHYDRATE CHEMISTRY
ISSN journal
07328303
→ ACNP
Volume
19
Issue
9
Year of publication
2000
Pages
1185 - 1190
Database
ISI
SICI code
0732-8303(2000)19:9<1185:SOPUMS>2.0.ZU;2-B
Abstract
The polysaccharides, curdlan, starch and dextran were sulfated when heated
in DMSO with sodium methyl sulfate and a catalytic amount of H2SO4 or with
pyridinium methylsulfate. Use of diminished pressure and anhydrous CaSO4 as
a desiccant improved the degree of sulfation and recovery. Under condition
s using sodium methyl sulfate, H2SO4 and CaSO4 in vacuo, sulfation at O-6 w
as predominant in the cases of curdlan and starch, while sulfation at O-2 a
nd O-3 was preferential in the case of dextran.