| abstract |
The invention relates to 2-substituted 1,2-benzisothiazole derivatives of formula (I), wherein R1 and R2 represent (C1-6) alkyl, independently of each other; A represents branched or unbranched (C1-10)-alkylene or straightchained or branched (C2-10)-alkylene comprising at least one group Z which is selected from O, S, NR7, cyclopropyl, CHOH, a double or triple bond; B represents 4-piperidine, 4-tetrahydro-1, 2, 3, 6 pyridine, 4-piperazine and the corresponding ring compounds enlarged with a methylene group, an N-atom of B providing the link with A; Ar represents phenyl which is optionally substituted by (C1-6) alkyl -branched or unbranched-, O-( C1-6)-alkyl branched or unbranched-, OH, F, Cl, Br, I, trifluoromethyl, NR5R6, CO2R7, cyano or phenyl; tetralin, indan, highly condensed aromatics such as naphthalin optionally substituted by (C1-4) alkyl or O(C1-4) alkyl; anthracene or 5- or 6-membered aromatic heterocyclene with 1 to 2 heteroatoms which are selected independently of each other from O and N and which can still be anellated with further aromatic radicals such as quinoline, isoquinoline, phthalazine, indole and quinazoline which can itself be substituted again with phenyl; and R3 and R4 have the meanings given in the description. The invention also relates to the production of the inventive derivatives and to their use as serotonin antagonists. |