Synthesis of Optically Active β-Amino Acid <i>N</i>-Carboxyanhydrides
作者:Jianjun Cheng、Joseph W. Ziller、Timothy J. Deming
DOI:10.1021/ol000122w
日期:2000.6.1
general synthesis of opticallyactive beta-amino acid N-carboxyanhydrides (beta-NCAs) through cyclization of N(beta)-Boc or N(beta)-Cbz beta-amino acids using phosphorus tribromide. The formation of beta-NCAs was confirmed by spectroscopy as well as an X-ray structural determination of beta-homoalanine-N-carboxyanhydride. The beta-NCA molecules could be polymerized in good yield to give optically active