An Efficient, Practical Approach to the Synthesis of 2,4-Disubstituted Thiazoles and Oxazoles: Application to the Synthesis of GW475151
作者:Stephen A. Hermitage、Kevin S. Cardwell、Tim Chapman、Jason W. B. Cooke、Rebecca Newton
DOI:10.1021/op000086g
日期:2001.1.1
A new method for the synthesis of 2,4-disubstituted oxazoles and thiazoles and 2,4,5-trisubstituted oxazoles from readily available starting materials is described. The methodology has been applied on multigram scale and involves transfer of oxidation state through a molecular framework. In particular the oxazole-containing amino acid fragment of the 5,5-trans-fused lactam GW475151, 1, has been prepared
描述了一种从容易获得的起始材料合成 2,4-二取代恶唑和噻唑以及 2,4,5-三取代恶唑的新方法。该方法已应用于数克规模,并涉及通过分子框架转移氧化态。特别是 5,5-反式稠合内酰胺 GW475151, 1 的含恶唑氨基酸片段已以优异的产率和纯度制备。