Metabolites of proteaceae. Part V. Reflexin and conocarpic acid from Leucospermum reflexium Buek ex Meisner, and the phenol-dienone rearrangement of reflexin and conocarpin
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 2450-2457
- https://doi.org/10.1039/p19720002450
Abstract
Reflexin is obtained from leaves of Leucospermum reflexum Buek ex Meisner by extraction with methanol and is shown to correspond to the methyl ester of the ring-A-opened form of conocarpin, viz. conocarpic acid. Both reflexin and conocarpin undergo phenol–dienone conversion into a dibromo-spiro-cyclohexadienone cyclic ether system on treatment with bromine in water. A model system, 3-(4-hydroxyphenyl)propan-1-ol, reacts in the same manner.Keywords
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