Intramolecular Diels-Alder Cyclization of E-1-Nitro-1,7,9-Decatrienes: Synthesis of the AB Ring System of Norzoanthamine

D. R. Williams and T. A. Brugel, Intramolecular Diels-Alder Cyclization of E-1-Nitro-1,7,9-Decatrienes:  Synthesis of the AB Ring System of Norzoanthamine, Org. Lett. 2000, 2, 1023–1026.