| abstract |
Disclosed is use of a compound of the formula (I) to increase the amount of melanin in melanocytes, where: R1 is formula (AA) in which, X is H, CH 3 , (CH 2 ) n -CH 3 or a substituted alkyl group, Y is H, CH 3 , (CH 2 ) n -CH 3 or a substituted alkyl group and Z is H or OH; and R2 is H, OH, NH 2 or -O-(ΟΗ 2 ) n β where, n =1 to 3 and β is phenyl, naphthyl or alkyl group further optionally substituted with halogen, aryl or NH 2 group, where compound of formula 1 is not a compound in which X is H, Y is CH 3 and Z is OH. |