| abstract |
This invention is concerned with the compounds of formula (I), the pharmaceutically acceptable acid addition salts and the stereochemically isomeric forms thereof, wherein R1 is hydrogen, amino or C1-4alkyl; R2 is hydrogen, halo or C1-4alkyl; R3 is hydrogen, halo or C1-4alkyl; Y is O or S, and -X1 = X2- is a bivalent radical having the formula: -N = CH- (a-1) or -CH = N- (a-2); compositions containing the same, and processes of preparing these compounds. It further relates to their use as a medicine, in particular their use as a medicine to treat keratinization disorders. |