Branched polyaminoacids, functionalized by hydrophobic...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 83/00 (2006.01)

Patent

CA 2573791

The invention concerns novel materials based on biodegradable branched polyaminoacids particularly useful for transporting active principle(s). The invention also concerns novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on polyaminoacids. The invention aims at providing a novel polymeric material, capable of being used for transporting active principle(s) and enabling all the required relevant specifications to be optimally satisfied: biocompatibility, biodegradability, easy ability to be combined with a large number of active principles or to solubilize same, and to release said active principles in vivo. This is achieved by the present invention which firstly concerns branched polyaminoacids comprising aspartic acid units and or glutamic acid units, and which bear hydrophobic groups including 8 to 30 carbon atoms. Said branched polyaminoacids are amphiphilic and are capable of being easily and economically transformed into particles for transporting active principles, said particles being themselves capable of forming stable aqueous colloidal suspensions.

La présente invention concerne des nouveaux matériaux à base de polyaminoacides branchés, biodégradables, utiles notamment pour la vectorisation de principe(s) actif(s) (PA). L'invention vise aussi de nouvelles compositions pharmaceutiques, cosmétiques, diététiques ou phytosanitaires à base de ces polyaminoacides. Le but de l'invention est de fournir une nouvelle matière première polymère, susceptible d'être utilisée pour la vectorisation de PA et permettant de satisfaire de manière optimale à toutes les spécifications requises en l'espèce : biocompatibilité, biodégradabilité, aptitude à s'associer facilement avec de nombreux principes actifs ou à les solubiliser, et à libérer ces principes actifs in vivo. Ce but est atteint par la présente invention qui concerne tout d'abord des polyaminoacides branchés, comprenant des unités aspartiques ou des unités glutamiques, et qui sont porteuses de groupements hydrophobes comportant de 8 à 30 atomes de carbone. Ces polyaminoacides branchés sont amphiphiles et sont aptes à se transformer aisément et économiquement en particules de vectorisation de principes actifs, ces particules étant elles même propres à former des suspensions colloïdales aqueuses stables.

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