Efficient synthesis of N-protected amino/peptide Weinreb amides from T3P and DBU
摘要:
The reaction of N-alpha-protected amino/peptide acid with N,O-dimethylhydroxylamine hydrochloride in the presence of T3P and DBU to obtain enantiomerically pure N-alpha-protected amino/peptidyl Weinreb amides in high yields has been described. Fmoc-Ala-Weinreb amide 2a is obtained as single crystal, and its structure was determined through X-ray crystallography. (C) 2012 Elsevier Ltd. All rights reserved.