Studies on the Conformational Aspects of Inulin Oligomers

抄録

The conformational studies of inulin oligomers from G-F₂ to G-F₉, which isolated from Platycodon grandiflorum, suggested a plausible conformational change between G-F₇ and G-F₈ from the trends in their chemical shift patterns and molecular rotation; the oligomers higher than G-F₈ would form some secondary conformations more rigid than shorter oligomers. On the other hand, spin-latice relaxation (T₁) studies of the protons proposed through-space interactions of 2- and 4-H's of glucose moiety in G-F₅, presumably with some atom(s) of the terminal fructose moiety. This would reflect that the inulin molecule adopts a 5/1 helix.