The methylation of gossypetin 7-β-D-glucopyranoside
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On the basis of mass and IR spectra it has been established that the substance with mp 169°C known in the literature as “the acetyl derivative of gossypetin 3,3′,4′,5,8-pentamethyl ether” is in actual fact gossypetin hexamethyl ether.
Thus, yet another case of the migration of a methoxy group from partially etherified compounds in an alkylationprocess has been described.
KeywordsFlavonol Ferric Chloride Acetic Anhydride Potassium Carbonate Methyl Ether
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