Lipase-Involved Strategy to the Enantiomers of 4-Benzyl-β-Lactam as a Key Intermediate in the Preparation of β-Phenylalanine Derivatives
作者:Xiang-Guo Li、Liisa T. Kanerva
DOI:10.1002/adsc.200505253
日期:2006.1
A simple chemoenzymatic method for the preparation of the enantiomers of 4-benzyl-β-lactam (4-benzylazetidin-2-one) from allylbenzene has been described. The enantiomers of this keyintermediate have been used to produce the corresponding enantiomers of β-phenylalanine and N-Boc-protected β-phenylalanine amide through the simple cleavage of the lactam ring by acid-catalyzed hydrolysis and by ammonolysis