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ayanin
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Ayanin is an O-methylated flavonol, a type of flavonoid. It is the 3,7,4'-tri-O-methylation of quercetin.
It can be found in ''Croton schiedeanus''. It can also be synthetized.〔(Partial methylation of quercetin: Direct synthesis of tamarixetin, ombuin and ayanin. Koppaka V. Rao, Jacob A. Owoyale, Journal of Heterocyclic Chemistry, Volume 13 Issue 6, Pages 1293 - 1295 )〕
== Biosynthesis ==
The enzyme 3,7-dimethylquercetin 4'-O-methyltransferase uses S-adenosyl methionine and 5,3',4'-trihydroxy-3,7-dimethoxyflavone (rhamnazin) to produce S-adenosylhomocysteine and 5,3'-dihydroxy-3,7,4'-trimethoxyflavone (ayanin).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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