N-Substituted N-carboxyanhydrides of alpha -amino acids and their application in the preparation of peptides

摘要

N-Substituted N-carboxyanhydrides of alpha -amino acids, useful in peptide syntheses, and peptide synthesis process using such compounds, are disclosed. The N-substituent is penta(lower alkoxy)benzyl, or optionally substituted 9-xanthyl, 9-thioxanthyl or 9-selenoxanthyl.