摘要:
The highly diastereoselective synthesis of the marine natural product, (-)-manzacidin B, is described. A novel copper-catalyzed aldol reaction of the alpha-methylserine-derived aldehyde with an isocyanoacetate possessing (1R)-camphorsultam as the chiral auxiliary proceeded in a highly diastereoselective manner to give the (4R,5R,6R)-adduct, which was converted into manzacidin B in a few steps. (C) 2012 Elsevier Ltd. All rights reserved.