Synthesis of Optically Active α-Methylene β-Lactams through Lipase-Catalyzed Kinetic Resolution
作者:Waldemar Adam、Peter Groer、Hans-Ulrich Humpf、Chantu R. Saha-Möller
DOI:10.1021/jo0003089
日期:2000.8.1
is reported. The optically active alpha-methylene beta-lactams 5a-c, and their corresponding amino acids 6a-c have been readily made available through lipase-catalyzed kinetic resolution in high enantiomeric purity (up to 99% ee). The N-substituted beta-lactam derivatives 4a, b and 10 are not accepted by the lipases and were prepared in optically active form by chemical transformation.
据报道,一种方便的方法用于制备迄今未知的手性α-亚甲基β-内酰胺衍生物5a,b。光学活性的α-亚甲基β-内酰胺5a-c及其相应的氨基酸6a-c已经可以通过脂肪酶催化的动力学拆分以高对映体纯度(至多99%ee)容易地获得。N-取代的β-内酰胺衍生物4a,b和10不被脂肪酶接受,并且通过化学转化以光学活性形式制备。