Process for the production of lipstatin and of...

C - Chemistry – Metallurgy – 12 – P

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C12P 17/02 (2006.01) C07D 305/12 (2006.01) C12N 1/20 (2006.01) C12P 1/06 (2006.01) C12P 17/16 (2006.01) A61K 31/365 (2006.01)

Patent

CA 2202016

A process for the fermentative production of lipstatin, which process comprises a) aerobically cultivating a micro-organism of the order of actinomycetes which produces lipstatin, in an aqueous culture medium which is substantially free of fats and oils, and which contains suitable carbon and nitrogen sources and inorganic salts, until the initial growth phase is substantially finished and sufficient cell mass has been produced, and b) adding to the broth linoleic acid, optionally together with caprylic acid, [wherein part or the totality of the linoleic acid and/or of the caprylic acid can be replaced by the corresponding ester(s) and/or salt(s)], and N-formyl-L- leucine or preferably L-leucine, the linoleic acid or its ester(s) or salt(s) being stabilized by an antioxidant. Lipstatin can be isolated from the broth and hydrogenated to tetra- hydrolipstatin.

Un procédé pour la production par fermentation de lipstatine, un procédé qui comprend a) la culture aérobie d'un micro-organisme de la famille des actinomycètes qui produit de la lipstatine, dans un milieu de culture aqueux qui est essentiellement exempt de graisses et d'huiles, et qui contient des sources appropriées de carbone et d'azote et des sels inorganiques, jusqu'à ce que la phase initiale de croissance soit essentiellement terminée et qu'une masse cellulaire suffisante ait été produite, et b) en ajoutant de l'acide linoléique au bouillon, optionnellement avec de l'acide caprylique, où une partie ou la totalité de l'acide linoléique et/ou de l'acide caprylique peut être remplacée par l'ester ou les esters correspondant(s) et/ou du ou des sel(s)|, et de la N-formyl-L-leucine ou de préférence de la L-leucine, l'acide linoléique ou son ou ses ester(s) ou son ou ses sel(s ) étant stabilisés par un antioxydant. La lipstatine peut être isolée du bouillon et hydrogénée pour former de la tétra-hydrolipstatine.

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