Efficient Synthesis of 4-Amido-<i>N</i><sup>5</sup>-acetyl-4-deoxyneuraminic Acid and Its Application to the C-4 Modification of Sialic Acids
作者:Zheng-Xi Gao、Meng Wang、Shaozhong Wang、Zhu-Jun Yao
DOI:10.1021/ol901511x
日期:2009.8.20
A straightforward synthesis of 4-amido-N5-acetyl-4-deoxyneuraminic acid, a key precursor to various 4-amidoneuraminic acid analogues, has been achieved using a highly regioselective and diastereoselective [3 + 2]-cycloaddition of d-mannose-derived nitrone with methyl acrylate. Advantages of this newly developed synthesis include the use of economically available materials and reagents, the ease of