2-C-Benzyloxymethyl-2,3:5,6-di-O-isopropylidene-d-allono-1,4-lactone
✍ Scribed by Watkin, David J. ;Parry, Loren L. ;Soengas, Raquel ;Izumori, Ken ;Fleet, George W. J.
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 377 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
Single-crystal X-ray study T = 190 K Mean '(C±C) = 0.002 A Ê R factor = 0.031 wR factor = 0.078 Data-to-parameter ratio = 12.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
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
X-ray crystallographic analysis firmly establishes the ribo stereochemistry and the unusual boat conformation of the title branched carbon chain lactone, C 9 H 13 N 3 O 4 , arising from an unexpected rearrangement in the nucleophilic substitution of a trifluoromethanesulfonate. There are two molecul