名称:
                                New functionalized monocyclic beta-lactams suitable precursors for anhydro 2-azacephams
                             
                            
                                摘要:
                                The anhydro 2-azacephams 9 were prepared starting from penicillanate sulphoxides 1 via 4-aminosulphinyl-2-oxoazetidines 3 and 4 and 4-aminosulphonyl-2-oxoazetidines 6 and 8. New functionalized monocyclic beta-lactams 5 and 7 were also produced as precursors for other beta-lactam species.
                             
                                                            
                                    DOI:
                                    10.1016/s0040-4020(01)80182-4