17331-91-8Relevant articles and documents
Studies on Enzymatic Peptide Synthesis in Biphasic Aqueous-Organic Systems with Product Extraction
Kuhl, Peter,Schaaf, Regina,Jakubke, Hans-Dieter
, p. 1279 - 1288 (1987)
The dipeptide derivatives Z-Tyr-Leu-NH2 and Mca-Tyr-Leu-NH2 were synthesized by α-chymotrypsin-catalyzed coupling reactions in solvent systems consisting of buffer and ethyl acetate.In comparison to a pure aqueous medium, in which only insignificant synth
Enzymatic C-terminal amidation of amino acids and peptides
Nuijens, Timo,Piva, Elena,Kruijtzer, John A.W.,Rijkers, Dirk T.S.,Liskamp, Rob M.J.,Quaedflieg, Peter J.L.M.
experimental part, p. 3777 - 3779 (2012/09/22)
Herein, we describe two versatile and high yielding enzymatic approaches for the conversion of semi-protected amino acid and peptidyl C-terminal α-carboxylic acids into their corresponding amides. In the first approach, the lipase Candida antarctica lipase-B (Cal-B), and in the second approach, the protease Subtilisin A, are used, respectively. We found that by using the ammonium salt of the α-carboxylic acid instead of separate ammonia sources, the enzymatic amidation reactions proceeded much faster without side reactions and gave near to quantitative yields of products.