| abstract |
(57) [Problem] To provide a high-purity tyrosinase activity inhibitor which has high safety to the human body, is excellent in safety such as heat resistance, and has no problem such as coloring. SOLUTION: The following general formulas (1) to (6): (In the formula, R 1 and R 2 each represent an alkyl group having 1 to 2 carbon atoms.) (In the formula, R 3 represents a methoxy group, and R 4 represents an aldehyde group or a methoxy group.) (Wherein, R 5 and R 6 represent hydrogen or a hydroxyl group, and have at least one hydroxyl group). (Wherein, R 7 to R 10 represent hydrogen or a methyl group, and represent at least one methyl group). (In the formula, one of R 11 and R 12 represents a methoxy group and the other represents hydrogen.) (Wherein the dashed line indicates the position of the double bond and at least one It has two double bonds. A tyrosinase activity inhibitor comprising at least one of the compounds represented by the formula (1) as an active ingredient. |