作者:Andrew N. Bowler、Paul M. Doyle、Peter B. Hitchcock、Douglas W. Young                                    
                                    
                                        DOI:10.1016/s0040-4039(00)78817-4
                                    
                                    
                                        日期:1991.6
                                    
                                    Reaction of activated imines with the lactam enolate of the protected pyroglutamic ester (1) has been used to prepare optically pure derivatives of amino acids containing three chiral centres.