Highly diastereoselective indium-mediated synthesis of β-lactam carbohydrates from imines
作者:Raquel G. Soengas、Yuri Segade、Carlos Jiménez、Jaime Rodríguez
DOI:10.1016/j.tet.2011.02.006
日期:2011.4
absolute configuration has been developed. The procedure, which is based on the indium-mediated reaction of imines and bromoesters, was applied to the enantioselective synthesis of 3-monosubstituted and 3-disubstituted β-lactams from readily available carbohydrates. The opening of the β-lactamic ring gave rise to the corresponding sugar-derived β-amino acids. Transformation of the β-lactams into the
已经开发出一种简单且非常有效的方法来制备具有可预测绝对构型的多功能碳水化合物β-内酰胺合成子。该方法基于铟的亚胺和溴酸酯的铟介导反应,被用于从容易获得的碳水化合物中对映体选择性合成3-单取代和3-二取代的β-内酰胺。β-内酰胺环的打开产生相应的糖衍生的β-氨基酸。也实现了β-内酰胺到相应的氮杂环丁烷的转化。