A concise synthesis of either enantiomer of azatyrosine
摘要:
A facile route to either enantiomer of azatyrosine is reported, utilising an efficient enzymic resolution of protected azatyrosine ethyl ester by alpha-chymotrypsin as a key step. Copyright (C) 1996 Elsevier Science Ltd
A concise synthesis of either enantiomer of azatyrosine
摘要:
A facile route to either enantiomer of azatyrosine is reported, utilising an efficient enzymic resolution of protected azatyrosine ethyl ester by alpha-chymotrypsin as a key step. Copyright (C) 1996 Elsevier Science Ltd
Enantiomerically pure 2-, 3- or 4-pyridylalanine (pya) and 2-azatyrosine (azatyr) are known to present various biological activities. After incorporation into appropriate peptide sequences, these heterocyclic non natural alpha-amino acids could behave as new substrates or inhibitors of elastase from Pseudomonas aeruginosa. This enzyme is known to be involved in nosocomial infections and infections related to the cystic fibrosis disease. New efficient chemoenzymatic preparations of those compounds using alpha-chymotrypsin (alpha-CT) are presented.