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Synlett 2011(16): 2359-2362
DOI: 10.1055/s-0030-1260313
DOI: 10.1055/s-0030-1260313
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Stereoselective Glycosylation of 3-Deoxy-d-manno-2-octulosonic Acid with Batch and Microfluidic Methods
Further Information
Received
9 June 2011
Publication Date:
13 September 2011 (online)
Publication History
Publication Date:
13 September 2011 (online)
Abstract
A practical and efficient stereoselective synthesis of 3-deoxy-d-manno-2-octulosonic acid (Kdo) glycoside was achieved using N-trifluoroacetoimidate as the glycosyl donor with both batch and microfluidic methods. The method used a conformationally constrained glycosyl donor, which has a bulky isopropylidene group at the 4,5-O-position. The strained conformation directed the coordination of the acetonitrile solvent, which led to the enhancement of reactivity and α-selectivity in the glycosylation.
Key words
glycosylation - carbohydrates - stereoselective synthesis - carbocation - natural products
- Supporting Information for this article is available online:
- Supporting Information
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References and Notes
IMM’s micromixer: http://www.imm-mainz.de.