Synthesis of 6∶7-dihydroxy-flavonols - Part I. 6 ∶ 7 ∶ 3′ ∶ 4′-tetra-hydroxy-flavonol
L Ramachandra Row T R Seshadri
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The synthesis and properties of 6 ∶ 7 ∶ 3′ ∶ 4′-tetrahydroxy-flavonol and of its derivatives are described. ω ∶ 4-Dimethoxy-2-hydroxy-acetophenone is oxidised with persulphate in alkaline medium to yield ω ∶ 4-dimethoxy-2 ∶ 5-dihydroxy-acetophenone which is then condensed with veratric anhydride and sodium veratrate. The new flavonol and its methyl and acetyl derivatives differ from patuletin and its derivatives.
L Ramachandra Row1 T R Seshadri1
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