Journal
JOURNAL OF CARBOHYDRATE CHEMISTRY
Volume 19, Issue 9, Pages 1185-1190Publisher
MARCEL DEKKER INC
DOI: 10.1080/07328300008544142
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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 conditions using sodium methyl sulfate, H2SO4 and CaSO4 in vacuo, sulfation at O-6 was predominant in the cases of curdlan and starch, while sulfation at O-2 and O-3 was preferential in the case of dextran.
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