参考文献
Charushin, V. N.; Kazantseva, I. V.; Ponizovskii, M. G.; Egorova, L.G.; Sidorov, E.O.; Chupakhin, O. N.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 10 p. 1118 - 1125
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 10 p. 1380 - 1388
