Pavashe P, Elamparuthi E, Hettrich C, Möller HM, Linker T. Synthesis of 2-Thiocarbohydrates and Their Binding to Concanavalin A.
J Org Chem 2016;
81:8595-603. [PMID:
27518032 DOI:
10.1021/acs.joc.6b00987]
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Abstract
A convenient and general synthesis of 2-thiocarbohydrates via cerium ammonium nitrate oxidation of the thiocyanate ion is described. Radical addition to glycals proceeds with excellent regio- and good stereoselectivities in only one step, deprotection affords water-soluble 2-thio saccharides. Binding studies to Con A have been performed by isothermal titration calorimetry (ITC) and saturation transfer difference (STD) NMR spectroscopy. The 2-thiomannose derivative binds even stronger to Con A than the natural substrate, offering opportunities for new lectin or enzyme inhibitors.
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