| 摘要 |
The present invention provides compounds which have, particularly, an inhibitory activity on production of melanin, a cell activating activity and an anti-bacterial activity, are derived from natural sources, and are safe and not harmful. One or more compounds represented by the following general formula are contained:wherein R1 represents -CH2OH, -COOR6 or -COOX, whereupon X is a group capable forming a salt and R6 represents hydrogen or a C1 to C3 lower alkyl group; R2 to R5 each represent hydrogen or a methyl group; and . . . A . . . represents =C(CH3)-, -C(CH3)=, -C(=CH2)-, -CH(CH3)- or -C(OH)(CH3)-.
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