Nitrone [2+3]-Cycloadditions in Stereocontrolled Synthesis of a Potent Proteasome Inhibitor: (−)-Omuralide
作者:Jean-Christophe Legeay、Nicole Langlois
DOI:10.1021/jo701968d
日期:2007.12.1
A new stereocontrolled synthetic route to omuralide has been developed from methyl pyroglutamate. This route involves regio- and stereoselective N-methylnitrone 1,3-dipolar cycloadditions to appropriate pyrrolinones, beta-eliminations, and highly selective hydrogenations as the main steps.
Studies toward the synthesis of salinosporamide A, a potent proteasome inhibitor
作者:Virginie Caubert、Nicole Langlois
DOI:10.1016/j.tetlet.2006.04.070
日期:2006.6
An α-methylenepyrrolidinone bearing all the functionalities and relative configurations of an advanced intermediate in the synthesis of salinosporamide A and analogues has been synthesized from methyl pyroglutamate through regio- and stereoselective N-methylnitrone cycloaddition.