Burkholderia cepacia lipase and activated β-lactams in β-dipeptide and β-amino amide synthesis
摘要:
The work describes fluorine-activated and N-Boc-activated beta-lactams as acyl donors to N-nucleophiles in the presence of Burkholderia cepacia lipase (lipase PS-D). Fluorine activation at the beta-lactam ring causes the ring to open in high enantioselectivity and allows the preparation of beta-dipeptides and beta-amino amides. in the case of N-Boc-activation, the chemical ring opening is significant. beta-Dipeptide formation can then be considerably enhanced by the presence of lipase PS-D and/or by temperature. (C) 2008 Elsevier Ltd. All rights reserved.