A concise and straightforward total synthesis of (±)-salinosporamide A, based on a biosynthesis model
作者:Nicholas P Mulholland、Gerald Pattenden、Iain A. S. Walters
DOI:10.1039/b803818j
日期:——
A 14-step totalsynthesis of (+/-)-salinosporamide A (1), a potent inhibitor of the 20S proteasome isolatedfrom the marine bacterium Salinospora tropica, is described. The synthesis is based on a diastereoselective intramolecular aldolisation of a substituted beta-keto amide intermediate, i.e. 13, derived from a beta-keto acid, viz. 21, and an alpha-amino malonate, leading to the pyrrolidinone ring