Efficient Synthesis and Spectroscopic Analysis of 8-Nitro Spiro C-3-Annulated 2-Benzazepines and their N-Oxides - Varlamov, Alexey; Kouznetsov, Vladimir; Zubkov, Fedor; Chernyshev, Alexey; Alexandrov, Grigorii; Palma, Alirio; Vargas, Leonor; Salas, Sandra (Synthesis, 2001)