1-苄基-5-苯基吡咯烷-2,3-二酮的高效合成研究

在浓硫酸作用下,不饱和酮酰胺发生分子内的氮杂Michael反应,高效地合成了1-苄基-5-苯基吡咯烷-2,3-二酮。考察了反应发生的条件,确定了反应的最佳条件。该化合物的结构已经通过氢谱,碳谱和质谱确定。

Efficient synthesis of terminal α,β-unsaturated ketones as the intermediates of the proteasome epoxyketone inhibitors via Weinreb amide

Peptidyl epoxyketones were potential antitumor agents due to their 20S proteasome inhibitory activities. Based on their structures and special inhibitory mechanism, a series of compounds were designed by linking the epoxyketone moiety （the Cterminal pharmacophore） and the peptide backbones. To make these compounds, we used a novel method to prepare the terminal α,β-unsaturated ketone, the crucial intermediate, from Weinreb amide with satisfactory yield （62%-65%）.