Cyclization of Linear Tetrapeptides Containing<i>N</i>-Methylated Amino Acids by using 1-Propanephosphonic Acid Anhydride
作者:Shengping Zhang、Luis M. De Leon Rodriguez、Ernest Lacey、Andrew M. Piggott、Ivanhoe K. H. Leung、Margaret A. Brimble
DOI:10.1002/ejoc.201601016
日期:2017.1.3
The synthesis of a series of naturally occurring cyclotetrapeptides and an analogue with 1‐propanephosphonic acidanhydride (T3P) is reported. An unexpected finding is the formation of unstable cyclic peptide conformers in addition to the more stable trans,cis,trans,cis (tctc) cyclopeptides.