Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1388673 | Carbohydrate Research | 2009 | 4 Pages |
Abstract
The formation of (4R)-4-carbamoyl-4-[(4R)-3-O-benzyl-1,2-O-isopropylidene-β-l-threofuranos-4-C-yl]-oxazolidin-2-one instead of expected imidazolidin-2,4-dione (hydantoin) derivative from 5-amino-5-cyano-5-deoxy-3-O-benzyl-1,2-O-isopropylidene-α-d-glucofuranose or 3-O-benzyl-1,2-O-isopropylidene-α-d-xylo-hexofuranos-5-ulose under Bucherer-Bergs reaction conditions is reported. Single crystal X-ray diffraction data revealed that 3T4 is the prefered conformation for the furanose ring, while E2 and 2T1 conformations are adopted by the 1,3-dioxolane and 2-oxazolidinone five-membered rings, respectively.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Bohumil Steiner, Vratislav Langer, Miroslav KoóÅ¡,