Summary
3 new bibenzyls having a 7-membered heterocyclic ring have been isolated from the liverwort,Radula variabilis and their structures have been established to be1, 3 and5.
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References
Y. Asakawa, M. Toyota and T. Takemoto, Experientia, in press (1978).
The authors are indebted to Dr S. Hattori of the Hattori Botanical Laboratory for his identification of the species and helpful suggestion.
R.J. Pryce, Phytochemistry10, 2679 (1971).
I.F.M. Valio, R.S. Burdon and W.W. Schwabe, Nature223, 1176 (1969).
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Asakawa, Y., Toyota, M. & Takemoto, T. New bibenzyls of the liverwort,Radula variabilis. Experientia 34, 971–972 (1978). https://doi.org/10.1007/BF01915292
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DOI: https://doi.org/10.1007/BF01915292