Constitution of patuletin—Part I

  • L. Ramachandra Row
  • T. R. Seshadri


The methylation of patuletin has been reinvestigated. It forms two methyl ethers, one with five methoxyl groups and the other with six. Decomposition of the latter with alcoholic alkali yields quercetagetol-tetra-methyl ether and veratric acid. Demethylation of patuletin produces quercetagetin. Patuletin is shown to be a mono-methyl ether of quercetagetin; from a study of its properties and reactions and from a comparison with related compounds, the methoxyl is tentatively considered to be in the 6-position.


Methyl Ether Aqueous Sodium Hydroxide Brownish Yellow Dimethyl Sulphate Tangeretin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    Row and SeshadriProc. Ind. Acad. Sci., 1944,21, 130 and 155.Google Scholar
  2. 2.
    Rao and SeshadriIbid.,, 1941,14, 643.Google Scholar
  3. 3.
    Ibid.,, 1939,9, 177;Curr. Sci., 1939,8, 255.Google Scholar
  4. 4.
    PerkinJ. C. S. Trans., 1913,103, 209.CrossRefGoogle Scholar
  5. 5.
    NelsonJ. Amer. Chem. Soc., 1934,56, 1392.CrossRefGoogle Scholar
  6. 6.
    Goldsworthy and RobinsonJ. C. S., 1937, 47.Google Scholar
  7. 7.
    AndersonCanad. J. Res., 1932,7, 285.Google Scholar
  8. 8.
    Rao and SeshadriProc. Ind. Acad. Sci., 1941,14, 293.Google Scholar

Copyright information

© Indian Academy of Sciences 1945

Authors and Affiliations

  • L. Ramachandra Row
    • 1
  • T. R. Seshadri
    • 1
  1. 1.Department of ChemistryAndhra UniversityIndia

Personalised recommendations