Nitrogeneous polycyclic derivatives useful as chelators of...

C - Chemistry – Metallurgy – 07 – D

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C07D 498/22 (2006.01) A61K 31/4745 (2006.01) A61P 25/28 (2006.01)

Patent

CA 2517755

The invention relates to the use of nitrogeneous polycyclic derivatives for preparing drugs for treating neurodegenerative diseases, said derivatives having formula : (I) wherein Rn is R1, R2, R3 and R4, identical or different and represent H or one or several radicals selected in the group comprising - OH, alkyl, -O-alkyl, -NH2, -NH-alkyl, -N (R5, R6), the alkyl being a C1-C6 alkyl, or an halogen, - Y forms a phenyl with both pyridines, optionally ortho- substituted by R5, or ortho-disubstituted by R5 and R6, said substitutuents, identical or different, being selected amongst alkyl, -O-alkyl, -NH2, -NH- alkyl, -N (R5, R6), the alkyl being a C1-C6 alkyl, or an halogen, or represents -(CH2) ml-W-(CH2)ml, with M1 and M2 being 0, 1 or 2, and W being a group -CH2-, -CH-(R7), 0, or N (R8, R9), R7, R8 and R9, identical or different, being a C1-C3 alkyl radical, or H, - Z is -A-(CH2)m-U-(CH2)n -A-, with A = O or N, and U = -(CH2)n -, -N(R1, R2), -COOH, -OH, with n is 2 to 6, and n1 is 0 or 1, and the complexes thereof with transition metals.

L'invention concerne l'utilisation de dérivés polycycliques azotés pour préparer des médicaments intervenant dans le traitement de maladies neurodégénératives, lesdits dérivés étant de formule (I), dans laquelle Rn désigne R1, R2, R3 et R4, qui sont identiques ou différents, et représentent H ou un ou plusieurs radicaux sélectionnés dans le groupe comprenant OH, alkyle, -O-alkyle, NH¿2?-NH-alkyle, -N (R5, R6), l'alkyle étant un alkyle C1-C6, ou un halogène ; Y forme un phényle conjointement avec les deux pyridines, éventuellement substitué par R5, ou orhto-substitué par R5 et R6, lesdits substituants étant identiques ou différents, sélectionnés parmi alkyle, -O-alkyle, -NH¿2?-NH-alkyle, -N (R5, R6), l'alkyle étant un alkyle C1-C6, ou un halogène, ou représente (CH¿2?) ¿m1?-W (CH¿2?)¿m1?-, m1 et m2 valant 0, 1 ou 2 et W étant un groupe CH¿2?-, -CH (R7), O, ou N (R8, R)), R7, R8 et R9, qui sont identiques ou différents, étant un radical alkyle C1-C3, ou H ; Z désigne A- (CH¿2?) ¿n?-U- (CH¿2?) ¿n?-A-, A = O ou NH, et U = - (CH¿2?) ¿n1?-, - N (R1,R2), -COOH, OH, n valant entre 2 et 6 et n1 valant 0 ou 1. L'invention concerne également les complexes desdits dérivés avec des métaux de transition. ? ¿

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