The first route features a double hetero Diels-Alderreaction between 2,6-dibromobenzoquinone and 2-methyl-2-hexenal dimethylhydrazone, aromatiztion by a novel, one-pot N-oxidation/elimination procedure with percarbamide in trifluoroacetic acid, and double N-oxidation followed by rearrangement to a double lactam system. The key step of the second route is a hetero Diels-Alderreaction between 2-methyl-2-hexenal