The relative configuration at position C-2 of the title lactone, C 11 H 18 O 6 , which exists in the five-membered ring form, was unequivocally established by X-ray crystallographic analysis. The absolute configuration was determined by the use of 2,4di-C-methyl-l-arabinose as the starting material.
3,5-Di-C-methyl-5,6-O-isopropylidene-l-glucono-1,4-lactone
✍ Scribed by Booth, Kathrine V. ;Jenkinson, Sarah F. ;Fleet, George W. J. ;Watkin, David J.
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 573 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The relative configuration at position C-2 of the title lactone, C 11 H 18 O 6 , which exists in the five-membered ring form, was unequivocally established by X-ray crystallographic analysis. There are two molecules present in the asymmetric unit (Z 0 = 2). The absolute configuration was determined by the use of 2,4-di-C-methyl-l-arabinose as the starting material.
📜 SIMILAR VOLUMES
The relative configuration at C-2 of the title lactone, C 14 H 22 O 6 , which exists in the five-membered ring form, was unequivocally established by X-ray crystallographic analysis. The absolute configuration was determined by the use of 2,4-di-Cmethyl-l-arabinose as the starting material.
A second crystalline diacetonide, the title compound, C 13 H 20 O 7 , has been isolated from the sequential treatment of d-tagatose with aqueous sodium cyanide, followed by acetone in the presence of acid. Structural ambiguities with regard to the size of both the lactone and ketal rings are resolve