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P. M. R. Spectroscopic Analysis of Bacterial Polysaccharides Containing Pyruvic Acid

 

作者: Y.M. Choy,   G.G. S. Dutton,   A.M. Stephen,   M.T. Yang,  

 

期刊: Analytical Letters  （Taylor Available online 1972）
卷期: Volume 5, issue 10  

页码: 675-681

 

ISSN:0003-2719

 

年代: 1972

 

DOI:10.1080/00032717208064348

 

出版商: Taylor & Francis Group

 

关键词: P.m.r. spectroscopy;bacterial polysaccharides;pyruvic acid ketals;analysis;Klebsiella

 

数据来源: Taylor

 

摘要:

The characteristic p.m.r. signal at τ 8.4–8.6 given by the CH3-C group of a pyruvic acid ketal (1-carboxyethylidene derivative)may be used to demonstrate the presence of such a substituent in polysaccharides. Similar signals are given when the pyruvic acid ketal is methylated or reduced. The method is convenient for monitoring purification procedures and chemical transformations of polysaccharides such as are involved in structural studies. In certain cases the molar ratio of pyruvic acid may be estimated.

 

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