We report here a silver-catalyzed method for the enantio- and diastereodivergent synthesis of chiral pyroglutamic acid esters with multiple stereocenters. This process proceeds through asymmetric conjugate addition of glycine imine esters to a broad range of β-substituted α,β-unsaturated perfluorophenyl esters followed by lactamization. By leveraging catalyst control and stereospecificity of the 1
我们在这里报告了一种
银催化的方法,用于具有多个立体中心的手性焦谷
氨酸酯的对映和非对映发散合成。该过程通过将甘
氨酸
亚胺酯不对称共轭加成到范围广泛的 β-取代的 α,β-不饱和
全氟苯基酯,然后进行内酰胺化来进行。通过利用 1,4-加成过程的催化剂控制和立体定向性,可以以高立体选择性获得所有包含两个相邻立体中心的四种产物立体异构体。