Zwitterionic fatty acid compounds for anti-inflammation

A - Human Necessities – 01 – N

Patent

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A01N 43/60 (2006.01) A61K 31/495 (2006.01)

Patent

CA 2311796

A composition and method for treating both superficial and subdermal inflammation is taught by treating an inflamed skin area, muscle, or bone joint, with a therapeutically effective amount of a skin-compatible ester of a zwitterionic aminosulphonic acid (ZASA-Ester) of formula (1) wherein M is an alkali metal, like sodium, and R is a naturally occuring, straight-chain, saturated or unsaturated, aliphatic acid, the esters of which form fatty acids in nature. The most useful of which are the oleic (cis isomer), linoleic, palmitic, and stearic moieties; they occur naturally as glycerides, i.e., esters of glycerol. Also useful are analogs of HEPES like piperazine-N'-(2- ethane sulfonic acid); N-methylpiperazine-N'-(2-ethane sulfonic acid); and the piperiodine analog of the piperazine ester. A pharmacologic composition is also provided which comprises at least one amphoteric (Zwitterionic-ester) with a pharmacologically-acceptable topical carrier or base. Other adjunctive pharmaceutical agents may be included to facilitate other than topical administration.

L'invention concerne une composition et un procédé pour traiter des inflammations en surface ou sous-cutanées par l'application à la région de la peau, au muscle ou à l'articulation irrités d'une quantité thérapeutiquement efficace d'un ester compatible avec la peau d'un acide zwittérionique sulfaminique (ZASA-ester) qui correspond à la formule (1) dans laquelle M est un métal alcalin tel que le sodium et R est un acide aliphatique naturel à chaîne droite saturé ou insaturé dont les esters forment dans la nature des acides gras. Les plus utiles parmi ces derniers sont les fractions oléiques (cis isomères), linoléiques, palmitiques et stéariques. Elles se rencontrent dans la nature sous la forme de glycérides, c'est-à-dire d'esters de glycérol. De même, des analogues de HEPES s'avèrent utiles, tels que l'acide pipérazine-N'-(2-éthane sulfonique), l'acide N-méthylpipérazine-N'-(2-éthane sulfonique) et l'analogue pipéridine de l'ester de pipérazine. L'invention se rapporte également à une composition pharmacologique qui comprend au moins un ester amphotérique (Zwittérionique) et une base ou un excipient topique acceptable en pharmacologie. On peut y inclure également d'autres agents pharmaceutiques supplémentaires afin de faciliter l'administration non topique.

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