• Nuclear oxidation in flavones and related compounds - Part XVI. A new synthesis of myricetin

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/028/04/0210-0215

    • Keywords

       

      Quercetin; Flavone; Myricetin; Hexamine; Hydriodic Acid

    • Abstract

       

      The most important example of ortho-oxidation from the point of view of the biogenesis of the anthoxanthins is the conversion of quercetin into myricetin.O-3∶5∶7∶3′-Tetramethyl quercetin has now been oxidised toO-tetramethyl-myricetin by the two stage process already explored in Part XV. The intermediate O-tetramethyl quercetin aldehyde and the final myricetin tetramethyl ether are obtained in satisfactory yields. From the latter 5-methoxykanugin, hexamethyl myricetin and myricetin have been obtained. These experiments could be taken as support for the multi-stage mechanism of ortho-oxidation. The appropriateness of the reagents from the point of view of biogenesis is discussed.

    • Author Affiliations

       

      K Visweswara Rao1 T R Seshadri1

      1. Department of Chemistry, Andhra University, Waltair
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