Application of ultra-high magnetic field for saccharide molecules: 1H NMR spectra of 6-O-alpha-D-glucopyranosyl-cyclomaltoheptaose and -cyclomaltohexaose.
1H NMR spectra of G1-alpha-CD and G1-beta-CD were recorded using a spectrometer equipped with a 21.6 T magnet. An ultra-high magnetic field was effective for detecting 1H NMR signals with a small difference in chemical shifts. Introducing a glucosyl group onto CDs as a branch caused deformation of equilibrated 1H signals of cyclodextrin. Particularly, 1H signals in branched glucose were shifted greatly.
Ishizuka
Yasuko
Y
Research Center for Glycoscience, National Institute of Advanced Industrial Science and Technology, Central-6, 1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. ishizuka.yasuko@aist.go.jp
Takasugi
Kenji
K
Tsutsumi
Yu
Y
Kanazawa
Kenji
K
Nemoto
Tadashi
T
Kiyoshi
Tsukasa
T
Nakanishi
Hiroshi
H
D003505:Cyclodextrins / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy
C504163:6-O-glucopyranosylcyclomaltohexaose; D003505:Cyclodextrins; C082037:6-O-(galactopyranosyl)cyclomaltoheptaose