23458-22-2Relevant articles and documents
Incorporation of unnatural amino acid derivatives into a peptide bond via an oxime ester catalysed by papain or lipase
Chen, Shui-Tein,Tsai, Chin-Far,Wang, Kung-Tsung
, p. 165 - 166 (1996)
In the presence of an oxime in the reaction solution, papain and lipase P (Pseudomonas from Amano) catalysed the stereoselective transesterification of an N-protected amino acid or peptide ester to form an active (oxime) ester which in turn underwent peptide bond formation with several natural and unnatural amino acid derivatives (proline, N-methylglycine, N-methylalanine, α-methylphenylalanine).
Amino Acids and Peptides; 67. Easy Preparation and Use of Benzyloxycarbonyl Derivatives of Amino Acid Chlorides and α-Hydroxycarboxylic Acid Chlorides
Schmidt, Ulrich,Kroner, Matthias,Beutler, Ulrich
, p. 475 - 477 (2007/10/02)
N-Benzyloxycarbonyl amino acid chlorides and α-benzyloxycarbonyloxy carboxylic acid chlorides are readily available by treating the corresponding carboxylic acids with 1-chloro-N,N,2-trimethyl-1-propen-1-amine.They can be immediately reacted with O-, N- and C-nucleophiles to afford peptides, ketones and esters.