POLYSACCHARIDES OF Polygonatum VIII. STRUCTURE OF A GLUCOFRUCTAN FROM Polygonatum sewerzowii MASS-SPECTYROMETRIC PROPERTIES OF PERACETATES OF FRUCTOOLIGOSACCHARIDES

Article abstract of DOI:10.1007/BF00574724

By partial hydrolysis, tetra- and pentafructooligosaccharides have been obtained from Polygonatum sewerzowii Regel.Structures of the individual tetra- and pentasaccharides have been proposed on the basis of the results of 13C NMR and mass spectrometry.In the 13C NMR spectrum a signal with a chemical shift of 76.5 ppm has been detected which is characteristic for the C-4 atom of a nonterminal unit.Consequently, the pentasaccharide has mixed 2 <*> 1 and 2 <*> bonds in the chain.A comparative mass-spectrometric study of isomeric trisaccharide peracetates has been performed.