参考文献
H. L. Holmes und G. Stork in R. H. F. Manske; H. L. Holmes
The Alkaloids, Bd. II <New York 1952>, S. 64, 195
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Small; Faris; Mallonee
Journal of Organic Chemistry, vol. 5, p. 339
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Gulland; Robinson
Mem. Pr. Manchester Soc., 1924 , vol. 69, p. 81
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Schoepf; Hirsch
Justus Liebigs Annalen der Chemie, 1931 , vol. 489, p. 224,247-249