25101-98-8Relevant academic research and scientific papers
POLYSACCHARIDES OF Polygonatum VIII. STRUCTURE OF A GLUCOFRUCTAN FROM Polygonatum sewerzowii MASS-SPECTYROMETRIC PROPERTIES OF PERACETATES OF FRUCTOOLIGOSACCHARIDES
Rakhmanberdyeva, R. K.,Rashkes, Ya. V.,Rakhimov, D. A.
, p. 135 - 140 (1986)
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.
Application of appel reaction to the primary alcohol groups of fructooligosaccharides: Synthesis of 6,6′,6′′-trihalogenated 1-kestose derivatives
Tachrim, Zetryana Puteri,Nakamura, Tadashi,Sakihama, Yasuko,Hashidoko, Yasuyuki,Hashimoto, Makoto
, p. 341 - 348 (2018)
1-kestose (O-β-D-fructofuranosyl-(2→1)-β-D-fructofuranosyl-(2→1)-α-D-glucopyranoside) is a potential short chain fructooligosaccharide with an inulin-type skeleton. Halogenation of 1-kestose was conducted via the Appel reaction with the use of carbon tetrahalide (CBr4 or CCl4) and triphenylphosphine, which was then followed by conventional acetylation. The per-O-acetylated form of 6,6’,6’’-trihalogenated derivatives of 1-kestose were conveniently isolated. Further deprotection of the per-O-acetylated form resulted in 6-, 6’-, and 6’’-trihalogenated derivatives. The structure elucidation by one- and two-dimensional nuclear magnetic resonance established that halogenations are specific at the 6-, 6’-, and 6’’-position of 1-kestose primary alcohols.
