参考文献

Archiv der Pharmazie (Weinheim, Germany), , vol. 275, p. 397,404 Magyar gyogysz. Tars. Ert., , vol. 13, p. 680,684 Chem. Zentralbl., , vol. 108, # II p. 2345 Journal of Organic Chemistry, , vol. 10, p. 429,434