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

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      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

       
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