Structural analysis of difructose anhydrides (DFAs) synthesized from monosaccharides by thermal treatment
2015
Yamamori, A. (General Institute of Ohtakakohso Co., Ltd., Otaru (Japan)) | Takata, Y. | Fukushi, E. | Kawabata, J. | Okada, H. | Kawazoe, N. | Ueno, K. | Onodera, S. | Shiomi, N.
Ten difructose anhydrides (DFAs) were the predominant products formed from the thermal treatment of equal amounts of D-glucose and D-fructose under melting conditions at 150degC for 60 min. The DFAs were isolated from the reaction mixture by carbon-Celite column chromatography and preparative high-performance liquid chromatography. The structures of the saccharides were confirmed by NMR measurements. We present the complete assignments of the sup(1)H- and sup(13)C-NMR signals of two of these DFAs for the first time.
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