Treating conditions using optically pure(-)-liarozole

A - Human Necessities – 61 – K

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A61K 31/415 (2006.01) A61K 31/4184 (2006.01)

Patent

CA 2190096

Methods and compositions are disclosed utilizing optically pure (-)-liarozole for the treatment of conditions supported by estrogen or caused by elevated estrogen levels such as estrogen-dependent breast cancer, gynecomastia, systemic lupus erythematosus and premature labor while substantially reducing the concomitant liability of adverse effects associated with the racemic mixture of liarozole. Methods and compositions are also disclosed utilizing optically pure (-)-liarozole for the treatment of conditions supported by or caused by elevated testosterone levels, such as hormone dependent prostate cancer. Further disclosed are methods and compositions utilizing pure (-)-liarozole in combination with retinoic acid for enhancing therapy with retinoic acid, such as in the treatment of neuroectodermal and neuroepithelial malignancies, including glioma, promyelocytic leukemia and hormone-independent prostate cancer.

L'invention traite de procédés et de compositions faisant appel au (-)-liarozole optiquement pur pour traiter des états maintenus par l'oestrogène ou provoqués par des taux d'oestrogène élevés, tels que le cancer du sein dépendant des oestrogènes, la gynécomastie, le lupus érythémateux aigu disséminé et l'accouchement prématuré, tout en réduisant sensiblement le risque concomitant des réactions indésirables associées au mélange racémique de liarozole. L'invention concerne également des procédés et des compositions utilisant du (-)-liarozole optiquement pur pour traiter des états maintenus ou provoqués par des taux de testostérone élevés, comme le cancer de la prostate hormono-dépendant. L'invention a aussi pour objet des procédés et des compositions faisant appel au (-)-liarozole en association avec de l'acide rétinoïque pour améliorer la thérapie par acide rétinoïque, par exemple dans le traitement des tumeurs malignes neuroectodermiques et neuroépithéliales, y compris les gliomes, la leucémie promyélocytaire et le cancer de la prostate hormono-dépendant.

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