Alginic acid, hydrolysis structure

The Structure of Alginic Acid. Part V. Isolation and Unambiguous Characterization of Some Hydrolysis Products of the Methylated Polysaccharide, Sir Edmund Hirst and D. A. Rees, J. Chem. Soc., 1182 (1965). 

From the products obtained by treatment of a dilute solution of sodium alginate with an extract of the liver of abalone (a mollusc) was isolated a crystalline disaccharide which gave D-mannuronic acid on hydrolysis and showed the spectrum of an a,/3-unsaturated acid. If the assumption is made that no transglycosylation had occurred, the structure of this compound must be that of 4-0-(4-deoxy-a-L-er2/[Pg.115]

Rosa glauca, alginates from Laminaria digitata and L. hyperborea, oligosaccharides released by enzymic hydrolysis of agarose, the rhamnomannans and acidic rhamnomannans of Sporothrix schenckii and Ceratocystis stenoceras, and cellulose 0-methyl, 0-carboxymethyl, and 0-hydroxyethyl ethers. Details of the structures of these polymers are included in Part II of this Report. 

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