名称:
                                Routes to 4-substituted analogues of the glycine/NMDA antagonist HA-996. Enantioselective synthesis of (3R,4R) 3-amino-1-hydroxy-4-methyl-2-pyrrolidinone (L-687, 414).
                             
                            
                                摘要:
                                Glycine anion (4) and glycine cation (8) synthons are used in efficient syntheses of 4-substituted analogues of HA-966 (1).  A stereospecific route to cis derivatives involves hydrogenation of examines such as 16.  Introduction of a chiral auxiliary leads to an enantioselective synthesis of 2a (L-687,414).
                             
                                                            
                                    DOI:
                                    10.1016/s0040-4020(01)88493-3