名称:
                                Novel stereoselective construction of a quaternary carbon: application to synthesis of the cyclopentenedione moiety of madindolines
                             
                            
                                摘要:
                                Enantioselective synthesis of the cyclopentenedione moiety of madindolines was achieved. Stereoselective construction of a quaternary carbon was realized by alkylation of an enolate possessing chiral auxiliary. Cyclopentenedione was derived from a triketone precursor by intramolecular condensation. (C) 2000 Elsevier Science Ltd. All rights reserved.
                             
                                                            
                                    DOI:
                                    10.1016/s0040-4039(00)00937-0