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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/017/01/0026-0031

    • Keywords

       

      Lead Acetate; Concentrate Sulphuric Acid; Acetyl Derivative; Tetrahydroxy Flavone; Herbacetin

    • Abstract

       

      A sample of the flower-petals ofThespasia populnea is found to contain populnin (0·33%), populnetin (0·07%) and herbacetin (mostly as its glucoside, 0·03%). The proportions vary with different samples depending on seasonal and other factors. Besides these three yellow pigments, a colourless phenolic compound called populneol is also present (0·16%).

      Populnetin seems to be a new tetrahydroxy flavone and populnin is its monoglucoside.

    • Author Affiliations

       

      K Neelakantam1 P Suryaprakasa Rao1 T R Seshadri1

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

       
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