Indium-mediated allylation of disaccharides

The indium-mediated allylation followed by ozonolysis has been applied for the elongation of different disaccharides such as cellobiose, lactose and maltose. This reaction sequence and per-O-acetylation produced the expected mixture of α/β-pyranoid as well as α/β-furanoid isomers. The main product i...

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Veröffentlicht in:Carbohydrate research 2020-12, Vol.498, p.108170-108170, Article 108170
Hauptverfasser: Denner, Christian, Gintner, Manuel, Kählig, Hanspeter, Wrodnigg, Tanja M., Schmid, Walther
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Sprache:eng
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Zusammenfassung:The indium-mediated allylation followed by ozonolysis has been applied for the elongation of different disaccharides such as cellobiose, lactose and maltose. This reaction sequence and per-O-acetylation produced the expected mixture of α/β-pyranoid as well as α/β-furanoid isomers. The main product in all cases adopted the β-pyranose form and could be isolated and fully characterized with the help of NMR-spin simulations. Thorough investigation of the side products throughout optimization of the conditions for the ozonolysis resulted in the discovery of a novel 12 membered bridged disaccharide. [Display omitted] •Elongation of disaccharides.•Indium-mediated allylation of carbohydrates.•DAISY spin simulation of carbohydrates.•12 Membered bridged bicyclic carbohydrate.
ISSN:0008-6215
1873-426X
DOI:10.1016/j.carres.2020.108170