Polymorphis of a known thiophenecarboxylic acid...

Details Polymorphis of a known thiophenecarboxylic acid... Polymorphis of a known thiophenecarboxylic acid...

C - Chemistry, Metallurgy

07

J

C07J 33/00 (2006.01) A61K 31/58 (2006.01) A61P 11/00 (2006.01)

Patent

CA 2493330

Polymorphic crystal forms of 3-methylthiophene-2-carboxylic acid (6S,9R,10S,11S,13S,16R,17R)-9-chloro-6-fluoro-11-hydroxy-l7-methoxycarbonyl- 10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H- cyclopenta[a]phenanthren-l7-yl ester. The crystal forms possess anti- inflammatory activity and have very good stability. Methods for preparing the crystal forms are also described.

Cette invention concerne des formes cristallines polymorphiques d'ester d'acide 3-méthylthiophène-2-carboxylique (6S,9R,10S,11S,13S,16R,17R)-9-chloro-6-fluoro-11-hydroxy-17-méthoxycarbonyl-10,13,16-triméthyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodécahydro-3H-cyclopenta[a]phénanthren-17-yl. Ces formes cristallines présentent une activité anti-inflammatoire ainsi qu'une excellente stabilité. Cette invention concerne également des procédés de préparation de ces formes cristallines.

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