Summary
Starting from 2-hydroxy-3: 6-dimethoxy acetophenone a new synthesis of 3-hydroxy primetin has been effected and by alkali fission of the trimethyl ether 2-hydroxy-ω: 3: 6-trimethoxy acetophenone has been prepared. Using the same procedure (modified Kostanecki’s method) 3:5:8:3′: 4′-pentahydroxy flavone, its pentamethyl ether and penta-acetate have been obtained. The properties of these compounds are different from those of the pentahydroxy flavone and its derivatives obtained from Ponderosa Pine Bark.
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Ahluwalia, V.K., Seshadri, T.R. Synthetic experiments in the benzopyrone series. Proc. Indian Acad. Sci. 39, 296–300 (1954). https://doi.org/10.1007/BF03048703
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DOI: https://doi.org/10.1007/BF03048703