Summary
The constitution of prunetin as the 7-methyl ether of genistein is established by preparing its diethyl ether and showing that it is identical with 7-methoxy-5 ∶ 4′-diethoxy isoflavone obtained by independent synthesis. Prunetin itself has been synthesised by a method involving partial methylation of genistein using one mole of dimethyl sulphate. The theoretical considerations are discussed. The same procedure leads to a convenient preparation of sakuranetin.
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Narasimhachari, N., Seshadri, T.R. Synthetic experiments in the benzopyrone series. Proc. Indian Acad. Sci. (Math. Sci.) 32, 256 (1950). https://doi.org/10.1007/BF03170828
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DOI: https://doi.org/10.1007/BF03170828