Abstract: The present invention is related to 8-hydroxy-quinoline derivatives having multidrug-resistance reversing activity with improved selectivity and increased cytotoxicity towards multidrug-resistant cancer cells, preparation thereof and use of the same in the treatment of cancer, especially multidrug-resistant variants thereof.

Abstract: The present invention is related to 8-hydroxy-quinoline derivatives having multidrug-resistance reversing activity with improved selectivity and increased cytotoxicity towards multidrug-resistant cancer cells, preparation thereof and use of the same in the treatment of cancer, especially multidrug-resistant variants thereof.

Abstract: Compounds of general formula (I), salts or solvates thereof and pharmaceutical compositions containing same: wherein Z is N or CH or the Z(R1) part is replaced with a covalent bond, m and n is 0, 1, 2 or 3; HET is heteroaryl; X is CF3, halogen, CO-heterocyclyl, COOR3 or CONHR3; R1 is H, (CH2)o-aryl, (CH2)p-heteroaryl, (CH2)q-biphenyl; C(O)—R5; S(O)2—R6; R2 is H, aryl, heteroaryl, Y—(CH2)r-aryl, Y—(CH2)s-heteroaryl, where some of the above substituents may be substituted; Y is O or S; with the exclusion of the compound where HET is 1,3-thiazol, X is COOH, R1 is 4-fluorophenyl and R2 is benzyloxy. The invention also relates to the use of a compound of general formula (I), salts or solvates thereof for the use in the prevention or treatment of diseases where the activation of MMPs is involved in the pathomechanism. In this aspect the use of the above excluded compound is also inventive.

Abstract: Compounds of general formula (I), salts or solvates thereof and pharmaceutical compositions containing same: wherein Z is N or CH or the Z(R1) part is replaced with a covalent bond, m and n is 0, 1, 2 or 3; HET is heteroaryl; X is CF3, halogen, CO-heterocyclyl, COOR3 or CONHR3; R1 is H, (CH2)o-aryl, (CH2)p-heteroaryl, (CH2)q-biphenyl; C(O)—R5; S(O)2—R6; R2 is H, aryl, heteroaryl, Y—(CH2)r-aryl, Y—(CH2)s-heteroaryl, where some of the above substituents may be substituted; Y is O or S; with the exclusion of the compound where HET is 1,3-thiazol, X is COOH, R1 is 4-fluorophenyl and R2 is benzyloxy. The invention also relates to the use of a compound of general formula (I), salts or solvates thereof for the use in the prevention or treatment of diseases where the activation of MMPs is involved in the pathomechanism. In this aspect the use of the above excluded compound is also inventive.

Abstract: A method of increasing expression of a molecular chaperon by a cell and/or enhancing the activity of a molecular chaperon in cells is provided. The method comprises treating a cell that is exposed to a physiological stress which induces expression of a molecular chaperon by the cell with an effective amount of a certain hydroxylamine derivative to increase the stress. Alternatively, an hydroxylamine derivative can be administrated to a cell before it is exposed to a physiological stress which induces expression of a molecular chaperon by the cell. Preferably, the cell to which an hydroxylamine derivative is administered is an eukaryotic cell. The hydroxylamine derivative corresponds to the formulae (I) or (II). The invention also provides novel hydroxylamine derivatives falling within the scope of the formulae (I) and (II) as well as pharmaceutical and/or cosmetical compositions comprising the said compounds.

Abstract: A method of increasing expression of a molecular chaperon by a cell and/or enhancing the activity of a molecular chaperon in cells is provided. The method comprises treating a cell that is exposed to a physiological stress which induces expression of a molecular chaperon by the cell with an effective amount of a certain hydroxylamine derivative to increase the stress. Alternatively, an hydroxylamine derivative can be administrated to a cell before it is exposed to a physiological stress which induces expression of a molecular chaperon by the cell. Preferably, the cell to which an hydroxylamine derivative is administered is an eukaryotic cell. The hydroxylamine derivative corresponds to the formulae (I) or (II). The invention also provides novel hydroxylamine derivatives falling within the scope of the formulae (I) and (II) as well as pharmaceutical and/or cosmetical compositions comprising the said compounds.

Abstract: A method of increasing expression of a molecular chaperon by a cell and/or enhancing the activity of a molecular chaperon in cells is provided. The method comprises treating a cell that is exposed to a physiological stress which induces expression of a molecular chaperon by the cell with an effective amount of a certain hydroxylamine derivative to increase the stress. Alternatively, an hydroxylamine derivative can be administrated to a cell before it is exposed to a physiological stress which induces expression of a molecular chaperon by the cell. Preferably, the cell to which an hydroxylamine derivative is administered is an eukaryotic cell. The hydroxylamine derivative corresponds to the formulae (I) or (II). The invention also provides novel hydroxylamine derivatives falling within the scope of the formulae (I) and (II) as well as pharmaceutical and/or cosmetical compositions comprising the said compounds.

Abstract: A method of increasing expression of a molecular chaperon by a cell and/or enhancing the activity of a molecular chaperon in cells is provided. The method comprises treating a cell that is exposed to a physiological stress which induces expression of a molecular chaperon by the cell with an effective amount of a certain hydroxylamine derivative to increase the stress. Alternatively; an hydroxylamine derivative can be administrated to a cell before it is exposed to a physiological stress which induces expression of a molecular chaperon by the cell. Preferably, the cell to which an hydroxylamine derivative is administered is an eukaryotic cell. The hydroxylamine derivative corresponds to the formulae (I) or (II). The invention also provides novel hydroxyl amine derivatives falling within the scope of the formulae (I) and (II) as well as pharmaceutical and/or cosmetical compositions comprising the said compounds.