参考文献:
Anisimova, V. A. Avdyunina, N. I. Pozharskii, A. F. Simonov, A. N. Talanova, L. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 198 , vol. 16, # p. 9 - 17 Khimiya Geterotsiklicheskikh Soedinenii, 198 , vol. 16, # p. 58 - 537