作者:Alessandro Dondoni、Alessia Boscarato、Alberto Marra
DOI:10.1016/s0957-4166(00)86296-5
日期:1994.11
An isomer of N-acetylneuraminic acid (Neu5Ac) with the acetamido group at C-4 (iso-Neu4Ac) has been synthesized through stereoselective 1,4-conjugate addition of trimethylsilyl azide to a 2-thiazolyl alpha,beta-enone bearing a protected D-mannose moiety at C-beta. The same approach employing benzylamine as aminating reagent was less viable. In both routes the thiazole ring serves as a precursor to the formyl group which is oxidized to carboxylic acid in the final step of the synthesis.