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
描述了一种通过
硫氰酸盐离子的
硝酸铈铵氧化方便而通用的2-
硫代
碳水化合物的合成方法。自由基向糖基中的加成仅需一步即可获得出色的区域选择性和良好的立体选择性,脱保护得到
水溶性的2-
硫代糖。与Con A的结合研究已通过等温滴定热法(ITC)和饱和转移差异(STD)NMR光谱进行。2-
硫甘露糖衍
生物与Con A的结合甚至比天然底物更牢固,为新型凝集素或酶
抑制剂提供了机会。