Phenyl ester side chains to increase polymer resorptivity

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 235/34 (2006.01) A61K 47/34 (2006.01) A61M 31/00 (2006.01) C08G 18/30 (2006.01) C08G 63/00 (2006.01) C08G 64/00 (2006.01) C08L 67/00 (2006.01) C08L 69/00 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2691443

The present invention relates to polymers modified to increase their resorbability. In particular, the polymers of the invention have phenyl ester side chains which are good leaving groups and which thereby increase the resorption rate of the polymer relative to the same polymer, for example, bearing a comparable amount of an alkyl ester side chain. Such polymers are generally water insoluble, but when modified are able to solublize drugs and upon degradation and resorption, release those in a physiological environment in a controlled and/or sustained manner.

La présente invention concerne des polymères qui ont été modifiés en vue d'accroître leur capacité de résorption. En particulier, les polymères de l'invention présentent des chaînes latérales d'ester de phényle qui constituent de bons groupes partants, augmentant par là même le taux de résorption d'un polymère par rapport au même polymère portant par exemple une quantité comparable de chaîne latérale d'ester d'alkyle. De tels polymères sont généralement insolubles dans l'eau, mais lorsqu'ils sont modifiés ils sont capables de solubiliser des médicaments et, lors de la dégradation et de la résorption, de libérer ceux-ci dans un environnement physiologique d'une manière contrôlée et/ou prolongée.

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