Patent ID: 6174897
Filing Date: 2001-01-16
Classification: A61K,C07D

Abstract:
A method for treating dementias or depression which comprises administering to a patient in need thereof a pharmaceutically effective amount of a compound of the formula (I) ##STR8##in whichA, A', D, D', E and E' are identical or different and are hydrogen, halogen, cycloalkyl having 3 to 8 carbon atoms, aryl having 6 to 10 carbon atoms, cyano, carboxyl, hydroxyl, linear or branched alkyl, alkoxy or alkoxycarbonyl, each of which has up to 8 carbon atoms, or a group of the formula --CO--NR.sup.3 R.sup.4, whereinR.sup.3 and R.sup.4 are identical or different and are hydrogen or linear or branched alkyl having up to 5 carbon atoms,a is the number 2, 3, 4, 5, 6, 7 or 8,R.sup.1 is linear or branched alkyl having 2 to 8 carbon atoms andR.sup.2 is linear or branched alkyl having 1 to 8 carbon atoms orR.sup.1 and R.sup.2 are cycloalkyl having 3 to 8 carbon atoms or are phenyl which is optionally substituted by up to 3 identical or different substituents selected from halogen, hydroxyl, nitro, cyano, trifluoromethyl and linear or branched alkyl or alkoxy, each of which has up to 5 carbon atoms,and their salts.