| abstract |
The present invention provides a cyclic derivative compound having a chemical structure represented by general formula (I) or pharmacologically acceptable salts thereof which exhibit a superior whitening effect, wherein with respect to general formula (I), A is derived from an aromatic cyclic compound, C n , C n+1 , and C n+2 are three adjacent carbons present in the cyclic compound and n is a positive integer, R 1 and R 2 are a saturated or unsaturated, straight or branched chain alkyl group or acyl group; and each of R 3 , R 4, R 5 , and R 6 is at least one substituent selected from hydrogen, alkyl, alkoxy, acyloxy, acyloxymethyl, oxo, hydroxy, vinyl, nitrile, carboxaldehyde, carbonitrile, and aldehyde. |