| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of simply producing a flavonoid compound which exhibits an aldose reductase-inhibiting action, an active oxygen-eliminating action, a carcinogenesis promotion-inhibiting action, or an antiinflammatory action, and is pharmacologically useful. SOLUTION: This method for producing the compound represented by the formula (I) [R2 is substituted or non-substituted phenyl; R7 is H or OH; (n) is an integer of 1 to 4], is characterized by selectively binding a sugar derivative to a catechin compound through an O-glycoside, and then oxidizing the 4-position of the flavonoid skeleton.
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