Stereoselective synthesis of α-substituted serines from protected erythrulose oximes
                                
                                    
                                        作者:M. Carda、J. Murga、S. Rodrı́guez、F. González、E. Castillo、J.A. Marco                                    
                                    
                                        DOI:10.1016/s0957-4166(98)00146-3
                                    
                                    
                                        日期:1998.5
                                    
                                    The additions of organolithium reagents to the C=N bond of several chiral oxime ethers derived from erythrulose afforded protected amino polyols with high diastereoselectivity. Four of the latter compounds have been converted into the alpha,alpha-disubstituted alpha-amino acids (R)-2-(-)-methylserine, (S)-2-(+)-methylserine, (R)-(+)-2-phenylserine and (R)-(-)-2-n-butylserine. (C) 1998 Elsevier Science Ltd. All rights reserved.