• Chemical examination of Indian lichens - Part VI. Constitution of erythrin

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Sodium Bicarbonate; Methyl Ether; Erythritol; Sodium Bicarbonate Solution; Orcinol

    • Abstract


      The constitution of erythrin has been definitely established. The new important observations now made are as follows: (1) it is not a carboxylic acid; (2) it is optically active; (3) picroerythrin is identical with montagnetol; (4) trimethyl erythrin a compound in which all the phenolic hydroxyl groups are methylated is obtained by the action of diazomethane; (5) on hydrolysis with alcoholic potash the methyl ether yields the ester of dimethyl orsellinic acid and the ester of isoeverninic acid. Consequently, it is concluded that erythrin is the erythrityl ester of lecanoric acid. This is in agreement with the occurrence of lecanoric acid and montagnetol along with erythrin in the lichens.

    • Author Affiliations


      V Subba Rao1 T R Seshadri1

      1. Department of Chemistry, Andhra University, Waltair
    • Dates


© 2021-2022 Indian Academy of Sciences, Bengaluru.