Facile hydrolysis and formation of amide bonds by N-hydroxyethylation of α-amino acids
摘要:
The C-terminal amides of alpha-amino acids are readily hydrolyzed at 25 degrees and pH 7 when the N-terminus is N-hydroxyethylated, with one or two hydroxyethyl groups. The reaction proceeds via cyclization to a morpholinolactone (2) which is rapidly hydrolyzed by water. In the presence of equimolar amounts of amines or amino acid derivatives, 2 reacts in H2O without condensing agents to form a new peptide bond. (C) 1997 Elsevier Science Ltd.
Facile hydrolysis and formation of amide bonds by N-hydroxyethylation of α-amino acids
摘要:
The C-terminal amides of alpha-amino acids are readily hydrolyzed at 25 degrees and pH 7 when the N-terminus is N-hydroxyethylated, with one or two hydroxyethyl groups. The reaction proceeds via cyclization to a morpholinolactone (2) which is rapidly hydrolyzed by water. In the presence of equimolar amounts of amines or amino acid derivatives, 2 reacts in H2O without condensing agents to form a new peptide bond. (C) 1997 Elsevier Science Ltd.