## Crystals of the tetrasaccharide, (2,3,4,6-tetra-0acetyl-fi-D-ghxopyranosyl~-(1 + 3)-[2,3,4,6-tetra-O-acetyI+LD-gIucopyranosyI-(1 --t 6)]-(2,4-di-0-acetyl-g\_D-glucopyranosyl)-1 --) 3)-1,2,4,6-tetrad-acetyl$?-n-ghicopyranose, belong to tge monoclinic system, space group P2,, with a = 12.709(4),
Conformational analysis of 1,2:5,6-diepithio-3,4-di-o-acetyl-hexitols
✍ Scribed by P. Sohár; J. Kuszmann
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 323 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Conformational studies of acetylated open chain hexitol derivatives, possessing similar structures but differing in their configuration have been made by analysing their NMR spectra. It is shown, that the carbon chain of all three (manno-, ido-and gluco-) isomers is present in a non planar non zigzag conformation, containing the acetoxy groups at C-3 and C-4 in a trans relation.
📜 SIMILAR VOLUMES
f )-1,2:4,5-Di-0-isopropylidene-myo-inositol (11, C,2H,0,, crystallises in the mopoclinic space group, C2/c with unit-cell dimensions a = 22.587(3), b = 5.4204(3), and c = 22.174(4) A. (\*)\_1,2:5,6di-0-isopropylidene-myo-inositol (2), C,,H,O,, cOmtallises in the monoclinic space group, P2, /n with
3-0-(6-0-Acetyl-2,3-anhydro-4-deoxy-a-L-ribo-hexopyranosyl)-l,2:5,6-di-O-isopropylidene-a-D-glucofuranose has been synthesised and its monocrystal investigated by X-ray diffraction methods. The compound crystallises in the orthorhombic system, space group P2,2,2t, with cell constants a = 8.790( 7),
The molecule of the title compound, C 29 H 35 ClO 15 S, possesses normal geometric parameters. Intermolecular C-HÁ Á ÁO hydrogen-bond interactions are responsible for the supramolecular assembly of the complex molecules into a threedimensional framework.