Drug delivery enhancement via modified saponins

C - Chemistry – Metallurgy – 07 – J

Patent

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Details

C07J 63/00 (2006.01) A61K 38/28 (2006.01) A61K 39/39 (2006.01) A61K 47/28 (2006.01) A61K 47/46 (2006.01)

Patent

CA 2223063

Disclosed herein are modified saponins or fractions thereof obtainable by modification of a crude Quillaja saponaria extract or by modification of purified saponins obtainable from a crude Quillaja saponaria extract useful in pharmaceutical compositions for enhancing the transport of pharmacologically active substances across mucous membranes of an animal. Also disclosed are modified saponins having reduced irritability wherein the aldehyde group is reduced and the fatty acid moiety may be removed by hydrolysis. Also disclosed are pharmaceutical compositions comprising the modified saponins of the invention.

La présente invention concerne des saponines modifiées ou des fractions de celles-ci, qu'il est possible d'obtenir par modification d'un extrait brut de Quillaja saponaria ou par modification de saponines purifiées que l'on peut obtenir à partir d'un extrait brut de Quillaja saponaria, lesquelles sont utiles dans des compositions pharmaceutiques pour améliorer le transport de substances actives pharmacologiquement à travers les muqueuses d'un animal. Elle concerne également des saponines modifiées présentant une irritabilité réduite, dans lesquelles le groupe aldéhyde est réduit et la fraction d'acide gras peut être enlevée par hydrolyse. Elle concerne aussi des compositions pharmaceutiques comprenant les saponines modifiées de l'invention.

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