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    • 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


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