New diaminedithiol derivatives and radiorhenium or...

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 323/41 (2006.01) A61K 31/145 (2006.01) A61K 31/16 (2006.01) A61K 31/395 (2006.01) A61P 35/00 (2006.01) C07D 285/00 (2006.01)

Patent

CA 2441836

The present invention relates to a novel diaminedithiol derivative or a pharmaceutically acceptable salt thereof; radiorhenium or radiotechneticum complex thereof; a composition for treating liver cancer comprising the radiorhenium complex and lipiodol; and, a preparative kit of the composition for treating liver cancer. In the composition according to the invention, the diaminedithiol derivative is a novel compound in which long chain alkyl groups were introduced to diaminedithiol, capable of forming a radiorhenium or radiotechnetium complex thereof with an ease and leading to stronger van der Waals bonds with lipiodol. As a result, the complex becomes more stable in a medium, lipiodol, whereby the composition of the invention exhibits a high accumulation rate in liver cancer tissue when injected via hepatic artery, thereby capable of achieving an efficient treatment of liver cancer.

L'invention concerne un nouveau dérivé de diaminedithiol ou un de ses sels pharmaceutiquement acceptables, un complexe radiorhénium ou radiotechneticum dudit dérivé ; une composition pour traiter le cancer du foie comprenant le complexe radiorhénium et du lipiodol et un kit pour préparer la composition pour traiter le cancer du foie. Dans la composition selon l'invention, le dérivé de diaminedithiol est un nouveau composé dans lequel les groupes alkyle à chaîne longue ont été introduits dans du diaminedithiol propre à former aisément un complexe radiorhénium ou radiotechneticum dudit dérivé et permettant des liaison de van der Waals plus fortes avec du lipiodol. En conséquence, le complexe est plus stable dans un milieu, le lipiodol, la composition selon l'invention présentant un taux d'accumulation élevé dans le tissu hépatique cancéreux lorsqu'elle est injectée par le biais de l'artère hépatique, permettant ainsi de traiter efficacement le cancer du foie.

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