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    • Keywords


      Dimethyl Ether; Baicalein; Aqueous Sodium Hydroxide; Anhydrous Potassium Carbonate; Dimethyl Sulphate

    • Abstract


      Employing 2∶5-dihydroxy-4∶6-dimethoxyacetophenone and the Allan-Robinson method, the 5∶7-dimethyl ether of baicalein is obtained and from it by partial demethylation the 7-methyl ether. This is definitely different from oroxylin-A. The use of anisic anhydride in the above condensation yields two products, (1) 7∶4′-dimethyl ether of scutellarein and (2) 5∶7∶4′-trimethyl ether of 3-anisoyl-scutellarein. The former is different from the 6∶4′-dimethyl ether obtained from natural sources.

    • Author Affiliations


      V D Nageswara Sastri1 T R Seshadri1

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


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