Aurone derivative-containing composition for diagnosis

A - Human Necessities – 61 – K

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A61K 51/00 (2006.01) C07D 307/83 (2006.01)

Patent

CA 2671596

A composition for the diagnosis of diseases relating to amyloid which contains either a compound represented by the general formula (I): [wherein X represents O, etc.; R1, R3, R4, R5, R6, R8, and R9 each represents hydrogen, etc.; R2 represents halogeno, etc.; and R7 represents dimethylamino, etc.] or a compound obtained by labeling that compound with a radionuclide or contains a pharmaceutically acceptable salt of any of these compounds. The compound represented by the general formula (I) has high bonding specificity for amyloid ß-protein, is apt to highly pass through the blood-brain barrier, and has the property of rapidly disappearing from the areas excluding senile plaques in the brain.

L'invention concerne une composition pour le diagnostic de maladies liées à la substance amyloïde, qui contient soit un composé représenté par la formule générale (I) : [Formule chimique 1] (I) [dans laquelle X représente O, etc.; R1, R3, R4, R5, R6, R8 et R9 représentent chacun hydrogène, etc.; R2 représente halogéno, etc.; et R7 représente diméthylamino, etc.], soit un composé obtenu par marquage de ce composé par un radionucléide ou qui contient un sel pharmaceutiquement acceptable de n'importe lequel de ces composés. Le composé représenté par la formule générale (I) a une spécificité de liaison élevée pour la protéine ß amyloïde, est capable de très bien traverser la barrière sang-cerveau, et possède la propriété de disparaître rapidement des zones à l'exclusion des plaques séniles dans le cerveau.

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