Enantioselective organocatalyzed cascade reactions to highly functionalized quinolizidines
作者:Xiaoyang Dai、Xiaoyu Wu、Huihui Fang、Linlin Nie、Jie Chen、Hongmei Deng、Weiguo Cao、Gang Zhao
DOI:10.1016/j.tet.2011.03.007
日期:2011.4
An organocatalyzed one-pot Michael addition-Pictet–Spengler sequence of β-ketoamides and α,β-unsaturated aldehydes was developed, which provided access to highly substituted indolo[2,3-α]quinolizidines and benzo[α]quinolizidines in moderate to good yields and good to excellent enantioselectivities. For aromatic α,β-unsaturated aldehydes 1a–j products 10a–r containing a stable enol configuration were
研发了一种有机催化的一锅法的β-酮酰胺和α,β-不饱和醛的Michael加成-Pictet-Spengler序列,它提供了以中等至中等的程度取代高取代度的吲哚[2,3-α]喹啉和苯并[α]喹啉的途径。良好的产率和良好至优异的对映选择性。对于含有稳定的烯醇构型的芳族α,β-不饱和醛1a – j产物10a – r。