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The crystal and molecular structure of the trisaccharide erlose as the monohydrate

✍ Scribed by Tooru Taga; Eiji Inagaki; Yoshihiro Fujimori; Satoshi Nakamura

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
410 KB
Volume
240
Category
Article
ISSN
0008-6215

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✦ Synopsis

Erlose [O-P-o-fructofuranosyl-(1 + 2)-0-cY-o-glucopyranosyL(1 --t 4)-cu-o-ghrcopyranoside] monohydrate, C,,H,~O,,.H,O, M, = 522.45, is orthorhombic, P2,2,2, with a = 30.748 (31, b = 8.757 cl), c = 8.270 (1) A, and Z = 4. The structure was solved by direct methods, and refined to R = 0.048 for 1909 observed reflections. The torsion angles about the (1 + 2) and (1 -f 4) glycosidic bonds are similar to those observed in other sucrose-and maltose-like oligosaccharides. The maltose moiety has an O-3'-H. . O-2 intramolecular hydrogen-bond, but the sucrose moiety has no intramolecular hydrogen bonds. The hydrogen bonding in the crystal includes infinite and finite chains crosslinked by the water molecule.

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