Fmoc amino acid fluorides in peptide synthesis — Extension of the method to extremely hindered amino acids
作者:Holger Wenschuh、Michael Beyermann、Rüdiger Winter、Michael Bienert、Dumitru Ionescu、Louis A. Carpino
DOI:10.1016/0040-4039(96)01160-4
日期:1996.7
Fmocaminoacidfluorides were found to be exceptionally well suited for the coupling of extremelyhinderedaminoacids using a new strategy involving treatment with bis(trimethylsilyl)acetamide prior to the acylation step.
Exploiting an Inherent Neighboring Group Effect of α-Amino Acids To Synthesize Extremely Hindered Dipeptides
作者:Zachary Z. Brown、Christian E. Schafmeister
DOI:10.1021/ja806063k
日期:2008.11.5
new approach to creating extremely hindered dipeptides that is operationally simple and uses mild conditions and commercially available amino acids. The approach reduces the need for protecting groups and yields urethane-protected dipeptide acids that can be used as building blocks in the synthesis of larger peptides. We propose that the reaction proceeds through a previously unexploited intramolecular