Summary
A new and convenient method for the synthesis of tamaraxetin uses hesperetin. By the action of iodine and silver acetate, it is converted into 3-acetoxy-hesperetin and eventually into 3-hydroxy-hesperetin which undergoes dehydrogenation by means of iodine and potassium acetate to yield tamaraxetin.
5-Hydroxy-7-methoxy-flavanone (pinostrobin) is converted into alpinone by Fenton’s oxidation and subsequent dehydrogenation yields izalpinin.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF03052809.
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Goel, R.N., Seshadri, T.R. New synthesis of tamaraxetin, alpinone and izalpinin. Proc. Indian Acad. Sci. 47, 191–195 (1958). https://doi.org/10.1007/BF03052639
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DOI: https://doi.org/10.1007/BF03052639