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    • Keywords


      Methyl Ether; Aqueous Sodium Hydroxide; Brownish Yellow; Dimethyl Sulphate; Tangeretin

    • Abstract


      The methylation of patuletin has been reinvestigated. It forms two methyl ethers, one with five methoxyl groups and the other with six. Decomposition of the latter with alcoholic alkali yields quercetagetol-tetra-methyl ether and veratric acid. Demethylation of patuletin produces quercetagetin. Patuletin is shown to be a mono-methyl ether of quercetagetin; from a study of its properties and reactions and from a comparison with related compounds, the methoxyl is tentatively considered to be in the 6-position.

    • Author Affiliations


      L Ramachandra Row1 T R Seshadri1

      1. Department of Chemistry, Andhra University, India
    • Dates


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