Chemical investigation of Indian lichens

Part XXI. Occurrence of fallacinal inTeloschistes flavicans
  • T. R. Rajagopalan
  • T. R. Seshadri


A sample ofTeloschistes flavicans collected in summer 1955 was found to contain physcion and fallacinal in the proportion of 4∶1 and did not contain any appreciable amount of teloschistin. A pure sample of teloschistin has been obtained by the partial methylation of citreorosein using methyl sulphate and potassium carbonate and is found to melt at 243–44°. On oxidation with manganese dioxide it has yielded fallacinal.


Emodin Potassium Carbonate Manganese Dioxide Concentrate Sulphuric Acid Anhydrous Potassium Carbonate 
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  1. 1.
    Seshadri and SubramanianProc. Ind. Acad. Sci., 1949,30A, 67.Google Scholar
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    Neelakantanet al. Ibid.,, 1951,33A, 142.Google Scholar
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    Ibid.,, 1956,44A, 42.Google Scholar
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    MurakamiPharm. Bull., Japan, 1956,4, 298.Google Scholar
  5. 5.
    Rajagopalan and SeshadriProc. Ind. Acad. Sci., 1956,44A, 418.Google Scholar
  6. 6.
    Anslowet al. Biochem. J., 1940,34, 159.Google Scholar

Copyright information

© Indian Academy of Sciences 1959

Authors and Affiliations

  • T. R. Rajagopalan
    • 1
  • T. R. Seshadri
    • 1
  1. 1.Department of ChemistryDelhi UniversityDelhi

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