A new type of chiral-pyridoxamines for catalytic asymmetric transamination of α-keto acids
作者:Jianfeng Chen、Junyu Zhao、Xing Gong、Dongfang Xu、Baoguo Zhao
DOI:10.1016/j.tetlet.2016.09.005
日期:2016.10
A new type of chiral pyridoxamines bearing an adjacent chiral stereocenter has been developed via multi-step synthesis. The pyridoxamines displayed catalytic activity in asymmetric transamination of α-keto acids to give a variety of optically active amino acids in 27–78% yields with 34–62% ee’s under very mild conditions. This work provides a synthetic strategy to construct new chiral pyridoxamines
通过多步合成已经开发了一种新型的带有相邻手性立体中心的手性吡ido胺。吡ido胺在非常温和的条件下,在α-酮酸的不对称转氨反应中显示出催化活性,从而以27-78%的产率提供了34-62%ee的多种光学活性氨基酸。这项工作提供了使用溴吡啶7作为关键合成子来构建新的手性吡ido胺的合成策略,也代表了手性吡x胺在不对称催化中的早期应用实例。