参考文献
Alekseev, S. G.; Charushin, V. N.; Chupakhin, O. N.; Shorshnev, S. V.; Chernyshev, A. I.; Klyuev, N. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 11 p. 1242 - 1249
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 11 p. 1535 - 1543