Abstract: This invention comprises the novel compounds of formula (I) wherein n, m, t, R1, R2, R3, R4, R5, L, Q, X, Y, Z and have defined meanings, having histone deacetylase inhibiting enzymatic activity; their preparation, compositions containing them and their use as a medicine.

Abstract: A compound for use as a medicine having the formula ##STR1## a pharmaceutically acceptable acid addition salt form or a stereochemically isomeric form thereof, wherein R.sup.1 and R.sup.2 each independently are hydrogen, C.sub.1-6 alkyl or C.sub.3-6 cyclo-alkyl; or R.sup.1 and R.sup.2 taken together with the nitrogen atom bearing said R.sup.1 and R.sup.2 may form a pyrrolidinyl, piperidinyl, morpholinyl, piperazinyl or 4-C.sub.1-4 alkylpiperazinyl group; X is O or S; R.sup.3 is hydrogen or C.sub.1-6 alkyl; R.sup.4, R.sup.5 and R.sup.6 each independently are hydrogen, halo, C.sub.1-6 alkyl, C.sub.1-6 alkyloxy, nitro, trifluoromethyl, cyano, aminomethyl, carboxyl, C.sub.1-4 alkyloxycarbonyl, C.sub.1-4 alkyl-carbonyl, aminocarbonyl, or hydroxy; R.sup.7 is hydrogen or halo; and R.sup.8, R.sup.9 and R.sup.10 each independently are hydrogen, halo, C.sub.1-6 alkyl, C.sub.