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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/025/05/0397-0403

    • Keywords

       

      Ethyl Ether; Wogonin; Quinol; Anhydrous Potassium Carbonate; Dimethyl Sulphate

    • Abstract

       

      The constitution of gossypin as the 8-monoglucoside of gossypetin is confirmed by a detailed study of the pentamethoxy monohydroxy-flavone obtained by the complete methylation and subsequent hydrolysis of the glucoside. It is different from gossypetin-pentamethyl ether containing a free hydroxyl group in the 5-position but both give on oxidation the same quinone which is transformed into a quinol. Further its ethyl ether is shown to have the ethoxyl in the 8-position by unambiguous synthesis.

    • Author Affiliations

       

      K Visweswara Rao1 T R Seshadri1

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

       
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