Improved oral dosage formulations of...

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Details

A61K 31/5377 (2006.01) A61K 9/00 (2006.01) A61K 9/20 (2006.01) A61K 9/28 (2006.01)

Patent

CA 2415131

A formulation comprising, and process for preparing, improved oral dosage forms of 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl- ethoxy)-naphthalen-1-yl]-urea, a chemical entity with anti-inflammatory properties. Granulation of 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2- morpholin-4-yl-ethoxy)-naphthalen-1-yl]-urea within specified ranges provides improved dissolution of 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2- morpholin-4-yl-ethoxy)-naphthalen-1-yl]-urea and oral bioavailability, as well as content uniformity. Incorporation into the formulation of an aqueous soluble inclusion compound capable of forming a complex with 1-(5-tert-butyl-2- p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-ethoxy)-naphthalen-1-yl]-urea, such as beta-cyclodextrin provides enhanced stability of 1-(5-tert-butyl-2-p- tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-ethoxy)-naphthalen-1-yl]-urea, in particular in highly ionic environments. Chipping and disintegration of tablets containing more than about 10 % betacyclodextin can be prevented by applying a polymeric coat to the surface of the tablet at a temperature below 40 ~C.

L'invention concerne une préparation contenant, et une méthode de préparation de formes posologiques orales améliorées de 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-éthoxy)-naphtalène-1-yl]-urée, une entité chimique possédant des propriétés anti-inflammatoires. Des granules de 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-éthoxy)-naphtalène-1-yl]-urée dans des proportions spécifiées permettent une dissolution améliorée de 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-éthoxy)-naphtalène-1-yl]-urée et une biodisponibilité orale, ainsi qu'une homogénéité du contenu. L'incorporation dans la préparation d'un composé d'inclusion aqueux soluble pouvant former un complexe avec 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-éthoxy)-naphtalène-1-yl]-urée, tel que la beta-cyclodextrine, confère au 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-éthoxy)-naphtalène-1-yl]-urée une stabilité accrue, notamment dans des environnements fortement ioniques. L'écaillement et la désintégration de comprimés contenant plus d'environ 10 % de beta-cyclodextrine peuvent être évités par enduction de polymère sur la surface du comprimé à une température inférieure à 40 ·C.

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