参考文献
Kost, A. N.; Fadda, A.; Sagitullin, R. S.; Gromov, S. P.; Petrunina, T. I.; Sharbatyan, P. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 9 p. 970 - 976
Khimiya Geterotsiklicheskikh Soedinenii, 1983 , # 9 p. 1214 - 1221