Document Detail


Structural identification of isomeric O-trimethylsilyl derivatives of some hexuronic acids.
MedLine Citation:
PMID:  902276     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The structures of the isomeric products obtained on trimethylsilylation of naturally occurring hexuronic acids and their sodium salts and lactones have been established by the application of n.m.r. (for anomeric configuration) and mass spectrometry (for ring size). The equilibria of some of the hexuronic acids in methyl sulphoxide involved a larger proportion of furanoid forms than those in water or pyridine. The proportion of furanoses was also increased by the addition of hexamethyldisilazane. Kinetic evidence indicated that two molecules of each hexuronic acid interacted autocatalytically during mutarotation.
Authors:
J F Kennedy; S M Robertson; M Stacey
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Carbohydrate research     Volume:  57     ISSN:  0008-6215     ISO Abbreviation:  Carbohydr. Res.     Publication Date:  1977 Aug 
Date Detail:
Created Date:  1977-11-25     Completed Date:  1977-11-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0043535     Medline TA:  Carbohydr Res     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  205-14     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Hexuronic Acids / analysis*
Isomerism
Magnetic Resonance Spectroscopy
Mass Spectrometry
Molecular Conformation
Structure-Activity Relationship
Trimethylsilyl Compounds
Uronic Acids / analysis*
Chemical
Reg. No./Substance:
0/Hexuronic Acids; 0/Trimethylsilyl Compounds; 0/Uronic Acids

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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