摘要:
                                Amino amides react as trinucleophiles with vinyl vicinal tricarbonyl esters.  Reaction of the primary amino group takes place at the beta-position of the alpha,beta-unsaturated ketone along with addition to the central carbonyl group.  In a third-stage reaction, the amide residue adds to the iminium ion formed from the intermediate carbinolamine.  The resulting product is a bicyclic or tricyclic (acylamino)pyrrolidone carboxylate.  A novel tricyclic 3-azadethiacepham of biological interest has been prepared using this reaction.