• 5∶6∶7∶8-hydroxy-flavonols - Part IV. A synthesis of calycopterin

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    • Keywords


      Ferric Chloride; Acetic Anhydride; Potassium Salt; Benzoyl Chloride; Sodium Carbonate Solution

    • Abstract


      By the condensation of 2-hydroxy-ω: 3∶4∶5∶6-pentamethoxy-acetophenone with the anhydride and potassium salt ofp-benzoyloxy-benzoic acid is obtained 4′-hydroxy-3∶5∶6∶7∶8-pentamethoxy-flavone which yields calycopterin by partial demethylation using hydrobromic acid.

    • Author Affiliations


      T R Seshadri1 V Venkateswarlu1

      1. Department of Chemistry, Andhra University, Waltair, India
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