PROBLEM TO BE SOLVED: To provide a methylated catechin that exhibits a higher antiallergic action than that of a conventional methylated catechin product.SOLUTION: An epigallocatechin-3-O-gallate derivative or an isomer thereof represented by chemical formula I (wherein R1-R6 are each a hydrogen atom or a methyl group and at least three of R1-R6 are a methyl group) is provided.COPYRIGHT: (C)2008,JPO&INPIT【課題】これまでに知られているメチル化カテキンよりさらに抗アレルギー作用の高いメチル化カテキンの提供。【解決手段】化学式I(式中、R1~R6は水素原子又はメチル基を表し、R1~R6の少なくとも3ヶ所以上がメチル基を表す)で示されるエピガロカテキン-3-O-ガレート誘導体またはその異性体。【選択図】なし
