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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/036/03/0157-0169

    • Keywords

       

      Quercetin; Flavonol; Myricetin; Methyl Ether; Fisetin

    • Abstract

       

      Circular Rf values of important synthetic flavonols have been determined using phenol saturated with water. The results have been used for analysing the flavonol composition of plant extracts, three typical examples being taken;Moringa pterygosperma flowers, Neem flowers and Indian Podophyllum (Podophyllum emodi) resin. The results have been verified by applying regular methods of fractionation involving lead salt precipitation, fractional crystallisation of the acetates and adsorption chromatography of the methyl ethers. These materials could therefore be used as standards of comparison where synthetic flavonols are not readily available. Some information about the nature of the glycosides have been provided by colour reactions.

    • Author Affiliations

       

      K S Pankajamani1 T R Seshadri1

      1. From the Department of Chemistry, Delhi University, Delhi
    • Dates

       
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