New double salts of (-)-hydroxycitric acid and a process for...

C - Chemistry – Metallurgy – 07 – C

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C07C 59/285 (2006.01) A61K 31/194 (2006.01) A61P 3/04 (2006.01) C07C 51/41 (2006.01) C07C 59/265 (2006.01)

Patent

CA 2579197

This invention relates to new double salts of (-)-hydroxycitric acid with group II metals. Preferred double salts are calcium and magnesium double salts of hydroxycitric acid of the formula II. This invention also includes a process for the preparation of these double salts by the addition of one metal compound from group II to (-)-hydroxycitric acid solution followed by the addition of other metal compound solution from group II. These double salts are tasteless and are soluble in water. They areuseful as dietary supplements and in beverages.

L'invention concerne de nouveaux sels doubles de l'acide (-)-hydroxycitrique des métaux du groupe II. Les sels doubles préférés sont les sels doubles de calcium et de magnésium de l'acide hydroxycitrique de formule (II). Cette invention se rapporte également à un procédé pour préparer ces sels doubles, par addition d'un composé métallique du groupe II à une solution d'acide (-)-hydroxycitrique, puis addition d'une solution d'un autre composé métallique du groupe II. Lesdits sels doubles sont insipides et hydrosolubles. Ils peuvent servir de compléments diététiques et être utilisés dans des boissons.

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