Heavy metal salts of succinic acid hemiesters with...

C - Chemistry – Metallurgy – 08 – B

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C08B 37/08 (2006.01) A61K 31/28 (2006.01) A61K 31/715 (2006.01) A61K 33/24 (2006.01) A61K 47/48 (2006.01)

Patent

CA 2220682

Hyaluronic acid or hyaluronic acid ester derivatives, wherein one or more hydroxy functions of its 1,4-.beta.-D-glucuronic acid and 1,3- .beta.-N-acetyl-D-glucosamine alternating repeating units are esterified with a carboxyl group of succinic acid to form the succinic hemiester of hyaluronic acid or hyaluronic acid esters. These derivatives are used to prepare the corresponding heavy metal salts of succinic hemiesters of hyaluronic acid or with hyaluronic acid partial or total esters. These salts are used as active ingredients in the preparation of pharmaceutical compositions to be used as antibacterial and disinfectant agents for the treatment of wounds, burns and ophthalmia or as anti-inflammatory agents in particular for the preparation of pharmaceutical compositions for the treatment of osteoarticular disorders.

Dérivés d'acide hyaluronique ou d'esters d'acide hyaluronique dans lesquels une ou plusieurs fonctions hydroxy des unités de répétition alternantes d'acide 1,4- beta -D-glucuronique et de 1,3- beta -N-acétyl-D-glucosamine sont estérifiées avec un groupe carboxyle d'acide succinique pour former l'hémiester succinique d'acide hyaluronique ou d'esters d'acide hyaluronique. Ces dérivés sont utilisés pour préparer les sels de métaux lourds correspondants d'hémiesters succiniques avec de l'acide hyaluronique ou des esters totaux ou partiels d'acide hyaluronique. Lesdits sels sont utilisés en tant qu'ingrédients actifs dans la préparation de compositions pharmaceutiques destinées à être employées dans le traitement de blessures, de brûlures et d'ophtalmies ou en tant qu'agents anti-inflammatoires, en particulier pour la préparation de compositions pharmaceutiques pour le traitement de troubles ostéoarticulaires.

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