Allomaltol誘導体の合成
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概要
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Allomaltol (5-hydroxy-2-methyl-ϒ-pyrone, VI) which is an isomeric-ϒ-pyrone carrying the methyl group at the 6-position different from that of maltol, has been known to be of little significance as flavor-improver. The present authors have discovered for the first place that homologous allomaltols which carry various alkyl or alkenyl groups at the 6-position have acquired much-improved aroma-qualities comparable with maltol itself and are practically applicable for improving and/or enhancing flavors wide variety of foods. 6-Alkyl-allomaltols (5-hydroxy-2-methyl-6-substituted-ϒ-pyrone, Va_??_d) were obtained easily by reduction of the hydroxylic intermediates which were drived from the reaction of kojic acid and aldehydes in the presence of sodium hydroxide. 6-Vinyl allomaltol (5-hydroxy-2-methyl-6-vinyl-ϒ-pyrone, VIII) was obtained by dehydration of the intermediate (VII).
- 社団法人 日本農芸化学会の論文