α-Amino Acid Derivatives by Enantioselective Decarboxylation
作者:Henri Brunner、Markus A. Baur
DOI:10.1002/ejoc.200300206
日期:2003.8
The methodology of enantioselective decarboxylation was applied to 2-aminomalonic acidderivatives in order to obtain enantio-enriched amino acidderivatives. Full conversion was achieved stirring racemic N-acetylated 2-aminomalonic hemiesters in THF at 70 °C with 10 mol % of a chiral base for 24 h. The catalyst may be recycled. Whereas the commercially available cinchona alkaloids gave poor results
Reihlen; Weinbrenner; v.Hessling, Justus Liebigs Annalen der Chemie, 1932, vol. 494, p. 152
作者:Reihlen、Weinbrenner、v.Hessling
DOI:——
日期:——
Peptide ligation by chemoselective aminonitrile coupling in water
作者:Pierre Canavelli、Saidul Islam、Matthew W. Powner
DOI:10.1038/s41586-019-1371-4
日期:2019.7
N-to-C peptide ligation. Our model unites prebiotic aminonitrile synthesis and biological α-peptides, suggesting that short N-acyl peptide nitriles were plausible substrates during early evolution.Prebiotic peptide formation is achieved through chemoselective, high-yielding ligation of α-aminonitriles in water, showing selectivity for α-peptide coupling and tolerance of all proteinogenic amino acid residues
dehydration of primary amides to nitriles efficiently proceeds undermild, aqueous conditions via the use of dichloroacetonitrile as a water acceptor. A key to the design of this transfer dehydration catalysis is the identification of an efficientwater acceptor, dichloroacetonitrile, that preferentially reacts with amides over other polar functional groups with the aid of the Pd catalyst and makes the desired