• Colouring matter of tambul seeds - Part V. Synthesis of 7∶8∶4′-O-trimethyl-herbacetin considered to be identical with tambulin

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/026/05/0296-0298

    • Keywords

       

      Nitrobenzene; Methyl Ether; Galangin; Anhydrous Potassium Carbonate; Dimethyl Sulphate

    • Abstract

       

      Based on the evidences recorded in the past the constitution of tambulin is considered to be 7∶8∶4′-O-trimethyl-herbacetin. A substance of this constitution is synthesised by the partial demethylation of herbacetin-pentamethyl ether and is found to agree very closely with tambulin in properties. Hence its constitution is considered to have now been established.

    • Author Affiliations

       

      K J Balakrishna1 T R Seshadri1

      1. Department of Chemistry, Andhra University, Waltair
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