• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/027/04/0260-0264

    • Keywords

       

      Methyl Ether; Hydroxy Compound; Dimethyl Sulphate; Hydriodic Acid; Tetrahydroxy

    • Abstract

       

      In an earlier paper it was remarked that the colour reactions of norgardenin were rather extraordinary. Other flavonols belonging to the 5∶6∶8-hydroxy series and their methyl ethers have now been prepared using the fission ketone from methyl gardenin, and their properties studied. Their colour reactions resemble those of nor-gardenin and methyl gardenin closely. In general the hydroxy-flavonols of this series exhibit reactions with alkaline buffer solutions differing markedly from their isomers belonging to the 5∶7∶8- or 5∶6∶7- series thus emphasising the importance of the 7-hydroxyl for this purpose.

    • Author Affiliations

       

      K J Balakrishna1 T R Seshadri1

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

       
  •  

© 2021-2022 Indian Academy of Sciences, Bengaluru.