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    • Chemical investigation of Indian lichens - Part XXI. Occurrence of fallacinal inTeloschistes flavicans

      T R Rajagopalan T R Seshadri

      Volume 49 Issue 1 January 1959 pp 1-5

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/049/01/0001-0005

    • Keywords

       

      Emodin; Potassium Carbonate; Manganese Dioxide; Concentrate Sulphuric Acid; Anhydrous Potassium Carbonate

    • Abstract

       

      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.

    • Author Affiliations

       

      T R Rajagopalan1 T R Seshadri1

      1. Department of Chemistry, Delhi University, Delhi

    • Dates

       
      Published
      January 1959
      Manuscript received
      18 September 1958
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