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Partial methylation of quercetin: Direct synthesis of tamarixetin, ombuin and ayanin

1976; Wiley; Volume: 13; Issue: 6 Linguagem: Inglês

10.1002/jhet.5570130629

1943-5193

Koppaka V. Rao, J.A. Owoyale,

Morinda citrifolia extract uses

Abstract Methylalion of the penlahydroxy flavone, quercetin, was observed to proceed in distinct stages. From the reaction mixture (methyl sulfale/potassium carbonate/acetone), the isolation of three major intermediates, a mono‐, a di‐ and a trimethyl ether and their identification as the naturally occurring ethers: tamarixelin, ombuin and ayanin is described.