Total synthesis of sulfobacin A through dynamic kinetic resolution of a racemic β-keto-α-amino ester hydrochloride
作者:Olivier Labeeuw、Phannarath Phansavath、Jean-Pierre Genêt
DOI:10.1016/j.tetasy.2004.05.004
日期:2004.6
uniquely on catalytic asymmetric reactions for the creation of the three stereogenic centers without using chiral building blocks. The key steps of this short route to sulfobacin A involve ruthenium-mediated asymmetric hydrogenation reactions of a β-keto ester and a racemic β-keto-α-amino ester hydrochloride to afford, respectively, the corresponding enantiomerically pure β-hydroxy ester and the enantioenriched
描述了磺胺嘧啶A(一种von Willebrand因子受体拮抗剂)的总合成。我们的合成方法独特地依靠催化不对称反应来创建三个立体异构中心,而无需使用手性结构单元。短途生产硫磺巴星A的关键步骤涉及钌介导的β-酮酯和外消旋β-酮-α-氨基酯盐酸盐的不对称氢化反应,分别得到相应的对映体纯的β-羟基酯和对映体。通过动态动力学拆分得到对映体富集的抗β-羟基α-氨基酯盐酸盐。