The one-pot syntheses of N-protected Δ1- and Δ2-dehydrodipeptide esters by the coupling of N-carboxy α-dehydroamino acid anhydride (ΔNCA) with several kinds of C- or N-protected L-α-amino acids are described. In addition, it was found that a similar coupling of ΔNCA with both C- and N-protected α-amino acids also took place to give Δ2-dehydrotripeptide derivatives, involving eight kinds of important
New self-assembled supramolecular hydrogels based on dehydropeptides
作者:H. Vilaça、G. Pereira、T. G. Castro、B. F. Hermenegildo、J. Shi、T. Q. Faria、N. Micaêlo、R. M. M. Brito、B. Xu、E. M. S. Castanheira、J. A. Martins、P. M. T. Ferreira
DOI:10.1039/c5tb00501a
日期:——
New hydrogelators based on dehydrodipeptides N-conjugated with naproxen were prepared and characterized. These compounds gave hydrogels that resist proteolysis.
Novel stereospecific dehydration of β-hydroxy-α-amino acids using Martin's sulfurane
作者:Fumiaki Yokokawa、Takayuki Shioiri
DOI:10.1016/s0040-4039(02)02179-2
日期:2002.11
The stereospecific dehydration of threo-N-acyl-beta-hydroxy-alpha-amino acid derivatives was performed using Martin's sulfurane to give (Z)-alpha,beta-dehydroaimino acids, while erythro-N-acyl-beta-hydroxy-alpha-amino acid amides were converted to 4,5 transoxazolines using analogous reaction conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.
Facile and useful one-pot synthesis of dehydrooligopeptides using ΔNCA