Stereoselective formal synthesis of the potent proteasome inhibitor: salinosporamide A
作者:Virginie Caubert、Julien Massé、Pascal Retailleau、Nicole Langlois
DOI:10.1016/j.tetlet.2006.11.087
日期:2007.1
(2R,3S)-α-Methylenelactam 3, the key intermediate in Corey’s syntheses of salinosporamide A, has been synthesized from (S)-methyl 2-hydroxymethylpyroglutamate through chemoselective O-protection, regio- and stereoselective N-methylnitrone cycloaddition and quaternarization–elimination reactions as the main steps.
(2 - [R,3小号)-α-Methylenelactam 3,在salinosporamide A的科里的合成关键中间体,已经从(合成小号) -甲基通过化学选择性O型保护,区域选择性和立体选择性2- hydroxymethylpyroglutamate Ñ -methylnitrone环加成和季铵化-消除反应为主要步骤。