Substituted 6,11-ethano-6,11-dihydrobenzo[b]quinolizinium salts of Formula,
 pharmaceutical compositions containing them, and methods for the treatment or prevention of neurodegenerative disorders or neurotoxic injuries utilizing them.
                            式中的取代的 6,11-乙hano-6,11-二氢苯并[b
]喹嗪盐、
 含有它们的药物组合物,以及利用它们治疗或预防神经退行性疾病或神经毒性损伤的方法。