An Efficient Synthesis of Chiral Cyclic β-Amino Acids via Asymmetric Hydrogenation
作者:Cyrille Pousset、Marc Larchevêque、Roland Callens、Angela Marinetti
DOI:10.1055/s-2004-835659
日期:——
Cyclic p-amino acids, homoproline, homopipecolic acid and 3-carboxy-methylmorpholine were obtained in high enantiomeric excesses by transition metal-catalyzed asymmetric hydrogenation of cyclic β-acylamino-alkenoates. These compounds were synthesized by a thio-Wittig reaction on N-protected thiolactames.
通过过渡金属催化的环状β-酰基氨基-烯酸酯的不对称氢化,以高对映体过量获得环状p-氨基酸、高脯氨酸、高哌啶酸和3-羧基-甲基吗啉。这些化合物是通过在 N 保护的硫代内酰胺上的硫代-维蒂希反应合成的。