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Crystal and molecular structure of 6-C-(2-furyl)-1,2:3,4-di-O-isopropylidene-α-d-glycero-d-galacto-hexopyranose

✍ Scribed by Janusz W. Krajewski; Przemysław Gluziński; Zofia Urbańczyk-Lipkowska; Aleksander Zamojski; Peter Luger

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
511 KB
Volume
139
Category
Article
ISSN
0008-6215

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✦ Synopsis

6-C-(2-Furyl)-1,2:3,4-di-O-isopropylidene-~-D-g~yce~o-D-ga~~c~o-hexopyranose (1) has been investigated by X-ray diffraction methods. The crystals obtained from ethyl acetate-light petroleum were monoclinic, space group P2, (2 = 2)) with cell dimensions a = 13.796(2), b = 7.887(l), c = 8.035(l) A, and /3 = 106.68(3)". A four-circle, automatic STOE diffractometer was used for the collection of intensity data. Of 1600 reflection intensities, 1390 were of I > 2a, and were used for refinement. The structure was solved by direct methods, and the atomic parameters were refined by the full-matrix, least-squares procedure, giving R 0.056. The pyranose ring in 1 adopts a hybrid twist-boat conformation ("Tz + B,,,).

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