New Phenylglycine-Derived Primary Amine Organocatalysts for the Preparation of Optically Active Warfarin
作者:Tor E. Kristensen、Kristian Vestli、Finn K. Hansen、Tore Hansen
DOI:10.1002/ejoc.200900664
日期:2009.10
phenylglycine-derived primary amine organocatalysts useful for the one-step preparation of optically active warfarin, an important anticoagulant. Both enantiomeric forms of the catalysts are equally available and can be prepared by robust procedures without recourse to chromatographic purification. Together with a co-catalyst, particularly acetic acid or 2,4-dinitrophenol, they can furnish warfarin in approximately 80 %
在这项工作中,我们提出了新的、完全合成的苯基甘氨酸衍生的伯胺有机催化剂,可用于一步制备光学活性华法林,一种重要的抗凝剂。两种对映体形式的催化剂同样可用,并且可以通过稳健的程序制备,而无需求助于色谱纯化。与助催化剂,特别是乙酸或 2,4-二硝基苯酚一起,它们可以提供约 80% ee 的华法林,并且是其他伯胺有机催化剂(如手性二胺和金鸡纳衍生伯胺)的廉价替代品。(© Wiley -VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)