参考文献
Madre, M.A.; Liepin'sh, E.E.; Zhuk, R.A.; Sakhartova, O.V.; Lidak, M.Yu.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 4 p. 425 - 431
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 4 p. 518 - 524