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Synthesis of Tetrameric Arabinogalactans Based on 1,2-Anhydrosugars

✍ Scribed by Cornelis M. Timmers; Suzanne C. M. Wigchert; Michiel A. Leeuwenburgh; Gijsbert A. van der Marel; Jacques H. van Boom

Book ID
101275396
Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
499 KB
Volume
1998
Category
Article
ISSN
1434-193X

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✦ Synopsis

The spacer-containing tetrameric arabinogalactans 1؊3, newly formed 2-OH, 2Ј-OH, or 2ЈЈ-OH function in the β-(1Ǟ6)-galactoside backbone with the 1-thioarabinofurano-suitable for CCRC-M7 epitope characterization, are readily accessible by ZnCl 2 -assisted stepwise elongation of 11-meth-side donor 8, followed by deprotection, provided the target tetramers in high overall yield. oxycarbonylundecanol 9 with the 1,2-anhydrogalactose building unit 6. NIS/cat. TfOH-mediated glycosylation of the

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Stereoselective Synthesis of Ξ±-C-(alkyny
Stereoselective Synthesis of Ξ±-C-(alkynyl)-glycosides via Ring-opening of Ξ±-1,2-Anhydrosugars
✍ Michiel A Leeuwenburgh; Cornelis M Timmers; Gijsbert A van der Marel; Jacques H πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 French βš– 456 KB

Ab.rtraet:Ring-openingof an u-1,2-cpoxidefunctionin sugars with lithium afkynylderivativesin the presenceof zinc chforidepmeecdswith retentionof configurationto afford a-C-(alkynyl)-glycosidesin reasonableyields. @ 1997Elsevier ScienceLtd.