Synthesis of an enantiopure isoxazolidine monomer for β3-aspartic acid in chemoselective β-oligopeptide synthesis
摘要:
The synthesis of an enantiopure isoxazolidine monomer for the incorporation of beta(3)-aspartic acid residues into beta(3)-oligopeptides via chemoselective alpha-ketoacid-hydroxylamine amide formation is disclosed. This route involves nitrone cycloaddition of 3-thiophenylpropanal and Circumvents limitations of other potential starting Materials. (C) 2009 Elsevier Ltd. All rights reserved.