Phosphonic acid-based cationic lipids

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/88 (2006.01) A61K 9/127 (2006.01) A61K 31/66 (2006.01) A61K 31/70 (2006.01) A61K 45/06 (2006.01) A61K 47/24 (2006.01) A61K 47/28 (2006.01) A61K 47/48 (2006.01) A61K 48/00 (2006.01) C07F 9/40 (2006.01) C07F 9/44 (2006.01) C07F 9/6506 (2006.01) C07J 41/00 (2006.01) C07J 43/00 (2006.01) C07J 51/00 (2006.01)

Patent

CA 2223179

The present invention provides novel phosphonic acid-based cationic lipids of general structure (I), or a salt, or solvate, or enantiomers thereof wherein: (a) R1 is a lipophilic moiety; (b) R2 is a positively charged moiety; (c) R3 is a lipophilic moiety of 1 to about 24 carbon atoms, a positively charged moiety, or a negatively charged moiety; (d) n is an integer from 0 to 8; (e) X- is an anion or polyanion; (f) Y is N or O, and (g) m is an integer from 0 to a number equivalent to the positive charge(s) present on the lipid. The present invention further provides compositions of these lipids with polyanionic macromolecules, methods for interfering with protein expression in a cell utilizing these compositions and a kit for preparing the same.

L'invention porte sur de nouveaux lipides cationiques à base d'acide phosphonique, de la formule générale (I), ainsi que sur les sels, solvates et énantiomères de ces composés. Dans cette formule: (a) R¿1? est un fragment lipophile; (b) R¿2? est un fragment à charge positive; (c) R¿3? est un fragment lipophile ayant 1 à environ 24 atomes de carbone, un fragment chargé positivement ou un fragment chargé négativement; (d) n est un nombre entier compris entre 0 et 8; (e) X?-¿ est un anion ou un polyanion; (f) Y est N, ou O et (g) m est un nombre entier compris entre 0 et un nombre équivalent à la charge ou aux charges positives présentes sur le lipide. L'invention porte, en outre, sur des compositions de ces lipides avec des macromolécules polyanioniques, sur des procédés pour influer sur l'expression des protéines dans une cellule au moyen de ces compositions, ainsi que sur un nécessaire utilisé pour préparer ces compositions.

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