• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/024/05/0456-0464

    • Keywords

       

      Flavone; Rectangular Plate; Anisic Acid; Mixed Melting Point; Anhydrous Potassium Carbonate

    • Abstract

       

      Populnin is a monoglucoside of populnetin which is shown to be identical with kæmpferol. By the methylation and the subsequent hydrolysis of the glucoside a trimethyl ether of kæmpferol is obtained. Its colour reactions and properties indicate definitely that the free hydroxyl group is not in the 3− or 5-position. It has been compared with the isomeric 4′-hydroxy compound and found to be different. Thus the degradation product should have the hydroxyl in the 7-position. This is confirmed by ethylation and comparison of the ethyl ether and of its alkali degradation product (ketone) with synthetic samples.

    • Author Affiliations

       

      P Ramachandra Rao1 T R Seshadri1

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

       
  •  

© 2021-2022 Indian Academy of Sciences, Bengaluru.