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ABSTRACT
Syntheses of diosphenol (3), ψ-diosphenol (4), 6-hydroxydiosphenol (5) and 6-hydroxy-ψ-diosphenol (6), which are constituents of the essential oil from Barosma betulina Bartl. (mountain buchu), are discussed.
ACKNOWLEDGMENTS
We thank the late Mr. H. S. C. Spies for the NMR spectra and many helpful discussions and Ms. V. Truter for recording the mass spectra. Financial support by the University of Stellenbosch and technical assistance by Mr. M. C. de Jongh and his staff is gratefully appreciated.