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EP1917036A2 - Intermolecular association complex of a carrier and of an active principle - Google Patents

Intermolecular association complex of a carrier and of an active principle

Info

Publication number
EP1917036A2
EP1917036A2 EP06777885A EP06777885A EP1917036A2 EP 1917036 A2 EP1917036 A2 EP 1917036A2 EP 06777885 A EP06777885 A EP 06777885A EP 06777885 A EP06777885 A EP 06777885A EP 1917036 A2 EP1917036 A2 EP 1917036A2
Authority
EP
European Patent Office
Prior art keywords
active ingredient
chosen
intermolecular association
combinations
residue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06777885A
Other languages
German (de)
French (fr)
Inventor
Sabrina Consola
Muriel Blanzat
Isabelle Rico-Lattes
Emile Perez
Pascal Bordat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Pierre Fabre Dermo Cosmetique SA
Universite de Toulouse
Original Assignee
Centre National de la Recherche Scientifique CNRS
Pierre Fabre Dermo Cosmetique SA
Universite Toulouse III Paul Sabatier
Universite de Toulouse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS, Pierre Fabre Dermo Cosmetique SA, Universite Toulouse III Paul Sabatier, Universite de Toulouse filed Critical Centre National de la Recherche Scientifique CNRS
Publication of EP1917036A2 publication Critical patent/EP1917036A2/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/141—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers
    • A61K9/146—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers with organic macromolecular compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/19—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles lyophilised, i.e. freeze-dried, solutions or dispersions

Definitions

  • the active ingredient may be encapsulated within a phospholipid vesicle or immobilized in microspheres of biodegradable polymer.
  • the delivery of active ingredients through the skin has many advantages. Variable rates of absorption and metabolism associated with oral therapy are avoided, as well as possible gastrointestinal irritation.
  • the delivery of the active ingredient transcutaneously also allows better control of blood levels.
  • the skin has a complex structure and molecules administered transcutaneously or topically must first cross a barrier formed by the stratum corneum before reaching the blood stream.
  • the stratum corneum consists of a dense and highly keratinized layer with an average thickness of 10-15 microns.
  • the high degree of keratinization, as well as the compact assembly of the cells can constitute a virtually impermeable barrier to the passage of an active ingredient.
  • the rate of permeabilization through the skin is extremely slow.
  • Many additives can be used to increase the rate of penetration of the active ingredient through the skin.
  • Most of the compounds are administered at the same time as the drug (in some cases the skin may be pretreated with a permeabilizer) so as to increase the permeability of the stratum corneum and thereby increase the penetration of the active ingredient through the skin.
  • the permeability of many therapeutic agents can be improved by these permeabilizers.
  • Several additives are able to promote the transport of active ingredients through the skin according to several mechanisms, the most important of which are:
  • Permeabilization agents can be classified into different categories. Solvents such as alcohols, methyl sulphoxides and polyols increase the solubility which increases the skin passage. In addition, some solvents such as dimethylsulfoxide (DMSO) or ethanol, will extract the lipids and make the stratum corneum more permeable. Oleic acid and isopropyl myristate are typical examples of permeabilization agents that disrupt the stratum corneum by intercalating into the lipid structures. This emollient effect thus increases the diffusion coefficient of the active ingredient. Also, ionic surfactants or DMSO interact with the keratin of corneocytes, which deploys the structure of the protein and increases the diffusion coefficient.
  • DMSO dimethylsulfoxide
  • ethanol ethanol
  • Oleic acid and isopropyl myristate are typical examples of permeabilization agents that disrupt the stratum corneum by intercalating into the lipid structures. This emollient effect thus increases the diffusion coefficient of the
  • the present invention describes an original strategy of actively involving the active ingredient in its own transport. This intermolecular association will aim to protect, solubilize and convey the drug to the action site.
  • it is proposed to associate, by simple electrostatic acid / base interaction, an acidic active ingredient with a biocompatible basic amphiphilic molecule. This combination can be stabilized by hydrophobic type interactions between the active ingredient and the amphiphilic molecule.
  • this invention relates to formulation applications, such as solubilization, transport, protection and transcutaneous diffusion of an active ingredient. Indeed, this amphiphilic molecule may also act as a permeabilization agent for transcutaneous transport.
  • the invention relates to the combination of a biocompatible basic transporter with an active ingredient comprising one or more acid functional groups.
  • This intermolecular association leads to a new amphiphilic species corresponding to the formation of an acid / base pair bound by electrostatic interactions and stabilized by Van der Waals interactions between the hydrophobic parts of the two constituents.
  • the amphiphilic complex thus formed by association leads, according to its concentration in water as well as the nature of the active ingredient (volume, hydrophobicity), to a set of self-assembled structures such as micelles or vesicles.
  • the objects thus formed can also be used for the self-transport of the active ingredient.
  • the present invention thus relates to an association complex formed between an amphiphilic molecule and an active ingredient.
  • the object of the present invention is an intermolecular association complex of formula (I) of an amphiphilic transporter and an active ingredient " ZY:
  • S represents a carbohydrate residue selected from the group consisting of monosaccharides, disaccharides, polysaccharides, polyols and combinations of these residues,
  • X represents a C 1 -C 12 aliphatic residue chosen from alkyl, alkene, alkyne, linear or branched, or an ethylene oxide or propylene oxide unit having a degree of polymerization of between 1 and 10, as well as all the combinations of these residues,
  • n 0 or l
  • R 1 represents H
  • R 2 , R 3 independently represent a hydrogen atom or a linear or branched C1-C20 or perfluorinated hydrocarbon chain, as well as all the combinations of these substituents, and in which the active ingredient
  • Y carrying the therapeutic or pro-therapeutic activity, chosen from the group comprising anti-inflammatories, antibiotics, polyunsaturated fatty chain, vitamins or pro-vitamins and a residue
  • Z acid selected from the group consisting of carboxylates, sulfates sulfonates, phosphates, phosphonates or phosphinates.
  • the present invention also relates to the use of a complex as defined above to protect, solubilize and / or convey an active ingredient.
  • the invention also relates to the use of a complex as defined above for the manufacture of a medicament intended for topical or transcutaneous administration.
  • the transporter is selected from biocompatible amphiphilic molecules having one or more basic functions.
  • amphiphilic transporter will be chosen from carbohydrate derivatives having one or more hydrophobic chains, as well as one or more basic functions capable of interacting electrostatically with the active acidic principle.
  • This amphiphilic carrier has the general formula (II):
  • S represents a carbohydrate residue selected from the group consisting of monosaccharides, disaccharides, polysaccharides, polyols and combinations of these residues,
  • X represents a C 1 -C 12 aliphatic residue, alkene, alkyne, linear or branched, or an ethylene oxide or propylene oxide unit with a degree of polymerization of between 1 and 10, as well as all the combinations of these residues,
  • n 0 or 1
  • R 1 represents H
  • R 2 and R 3 independently represent a hydrogen atom or a linear or branched C1-C20 or perfluorinated hydrocarbon chain, as well as all the combinations of these substituents.
  • the amphiphilic transporter will advantageously be chosen from sugar-chain and long-chain amino surfactants, such as N- alkylamino-1-deoxylactitols having a chain with 12 or 16 carbon atoms, which will be named respectively Lhydl2 and Lhydl ⁇ .
  • N-alkylamino-1-deoxylactitols is as follows:
  • the active ingredient will preferably be chosen from non-steroidal anti-inflammatory drugs (NSAIDs) carrying an acid function, such as ketoprofen, ibuprofen or indomethacin.
  • NSAIDs non-steroidal anti-inflammatory drugs
  • the complexes according to the present invention may advantageously be used to solubilize and transport by acid / base combination polyunsaturated fatty acids (PUFAs) such as linoleic acid or linolenic acid.
  • PUFAs polyunsaturated fatty acids
  • the intermolecular combination (stoichiometric or not) will be formed by simple contact in water or in another solvent, the amphiphilic molecule in its basic form with the active ingredient in its acid form .
  • the invention therefore relates to a combination by simple neutralization acid / base between the amphiphilic transporter in its basic form and the active ingredient in its acid form.
  • the invention also relates to a process for preparing the present complexes.
  • the stoichiometric mixture of amphiphilic carrier and active principle is advantageously reacted by heating it at a temperature between room temperature and the boiling point of the solvent at atmospheric pressure, and for a duration of 1 to 72 hours. .
  • the final mixture is freed from its water, preferably filtered and freeze-dried.
  • the reactants and the solvent are chosen as follows:
  • the basic carrier is Lhydl2 or Lhydl ⁇
  • the active principle is indomethacin, ibuprofen, ketoprofen or linoleic acid.
  • the solvent is water or methanol.
  • the association constitutes a new amphiphilic species which forms aggregates with a diameter of less than 10 nm from a CAC of 10 "3 M.
  • the association constitutes a new amphiphilic species that forms aggregates with a diameter of 50 nm from a CAC of 4.5 ⁇ 10 ⁇ M.
  • formula B preparation of a 2.5% combination of indomethacin in aqueous solution
  • B1 indomethacin combination with Lhydl ⁇
  • B2 indomethacin combination with Lhydl2

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Medicinal Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Organic Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Rheumatology (AREA)
  • Pain & Pain Management (AREA)
  • Dermatology (AREA)
  • Medicinal Preparation (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Abstract

The invention relates to an intermolecular association complex of formula (I) of an amphiphilic carrier and of an active principle Z-Y, in which; S, X, n, R1, R2, R3, Y, Z are as defined in the description. The ampiphilic carrier is preferably an N-alkylamino-1-desoxylactitol. The active ingredient is preferably chosen from indomethacin, ibuprofen, ketoprofen or linoleic acid.

Description

COMPLEXE D'ASSOCIATION INTERMOLECULAIRE D'UN TRANSPORTEUR ET D'UN PRINCIPE ACTIF INTERMOLECULAR ASSOCIATION COMPLEX OF A CARRIER AND AN ACTIVE INGREDIENT

Améliorer la stabilité d'un principe actif afin de réduire ses effets secondaires reste encore de nos jours un enjeu très important. Généralement, cette stabilisation se réalise à deux niveaux. Tout d'abord au niveau du stockage où l'on peut introduire des conservateurs et des anti-oxydants, puis lors de l'administration du principe actif. Ce dernier sera administré à l'aide d'un véhicule afin de le solubiliser et éventuellement le cibler vers le site d'action. En même temps il sera protégé des multiples dégradations causées par le système immunitaire.Improving the stability of an active ingredient in order to reduce its side effects still remains a very important issue today. Generally, this stabilization takes place at two levels. First of all at the storage level, where preservatives and antioxidants can be introduced, then during the administration of the active ingredient. The latter will be administered using a vehicle to solubilize it and possibly target it to the site of action. At the same time it will be protected from the multiple degradations caused by the immune system.

De nos jours, il existe de nombreuses techniques de vectorisation de principes actifs. Ces techniques utilisent différentes stratégies en fonction de la nature du principe actif (hydrophile ou lipophile), ainsi que de l'organe visé, de la dose administrée et de la durée d'administration. Par exemple, le principe actif pourra être encapsulé à l'intérieur d'une vésicule de phospholipides ou immobilisé dans des microsphères de polymère biodégradable. La délivrance de principes actifs au travers de la peau présente de nombreux avantages. Les vitesses variables d'absorption et de métabolisation liées à un traitement par voie orale sont évitées, ainsi que d'éventuelles irritations gastrointestinales. La délivrance du principe actif par voie transcutanée permet également de mieux contrôler sa concentration sanguine. Toutefois, la peau présente une structure complexe et les molécules administrées par voie transcutanée ou topique doivent tout d'abord franchir une première barrière constituée par le stratum corneum avant d'atteindre le courant sanguin. Le stratum corneum est constitué d'une couche dense et hautement kératinisée d'une épaisseur moyenne de 10-15 microns. Le degré élevé de kératinisation, ainsi que l'assemblage compact des cellules peut constituer une barrière pratiquement imperméable au passage d'un principe actif. Pour la plupart des médicaments, la vitesse de perméabilisation au travers de la peau, sans adjonction d'additif perméabilisant, est extrêmement lente. De nombreux additifs peuvent être utilisés afin d'augmenter la vitesse de pénétration du principe actif au travers de la peau. La plupart des composés sont administrés en même temps que le médicament (dans certains cas la peau peut être prétraitée avec un agent de perméabilisation) de manière à augmenter la perméabilité du stratum corneum et ainsi accroître la pénétration du principe actif au travers de la peau. La perméabilité de beaucoup d'agents thérapeutiques peut être améliorée grâce à ces agents de perméabilisation. Plusieurs additifs sont capables de promouvoir le transport de principes actifs au travers de la peau selon plusieurs mécanismes dont les plus importants sont :Nowadays, there are many techniques of vectorization of active ingredients. These techniques use different strategies depending on the nature of the active ingredient (hydrophilic or lipophilic), as well as the target organ, the dose administered and the duration of administration. For example, the active ingredient may be encapsulated within a phospholipid vesicle or immobilized in microspheres of biodegradable polymer. The delivery of active ingredients through the skin has many advantages. Variable rates of absorption and metabolism associated with oral therapy are avoided, as well as possible gastrointestinal irritation. The delivery of the active ingredient transcutaneously also allows better control of blood levels. However, the skin has a complex structure and molecules administered transcutaneously or topically must first cross a barrier formed by the stratum corneum before reaching the blood stream. The stratum corneum consists of a dense and highly keratinized layer with an average thickness of 10-15 microns. The high degree of keratinization, as well as the compact assembly of the cells can constitute a virtually impermeable barrier to the passage of an active ingredient. For most drugs, the rate of permeabilization through the skin, without addition of permeabilizing additive, is extremely slow. Many additives can be used to increase the rate of penetration of the active ingredient through the skin. Most of the compounds are administered at the same time as the drug (in some cases the skin may be pretreated with a permeabilizer) so as to increase the permeability of the stratum corneum and thereby increase the penetration of the active ingredient through the skin. The permeability of many therapeutic agents can be improved by these permeabilizers. Several additives are able to promote the transport of active ingredients through the skin according to several mechanisms, the most important of which are:

- Extraction des lipides du stratum corneum- Extraction of lipids from the stratum corneum

- Désorganisation de la structure de la bicouche lipidique- Disorganization of the structure of the lipid bilayer

- Déplacement de l'eau liée - Délamination du stratum corneum- Relocation of bound water - Delamination of stratum corneum

- Désorganisation de la couche cornée- Disorganization of the stratum corneum

Les agents de perméabilisation peuvent être classés dans différentes catégories. Des solvants tels que des alcools, des alkyles méthyles sulfoxides et des polyols, augmentent la solubilité ce qui accroît le passage cutané. Par ailleurs, quelques solvants comme le diméthylsulfoxyde (DMSO) ou l'éthanol, pourront extraire les lipides et rendre le stratum corneum plus perméable. L'acide oléique et le myristate d'isopropyle sont des exemples types d'agents de perméabilisation qui désorganisent la couche cornée en s'intercalant dans les structures lipidiques. Cet effet émollient accroît ainsi le coefficient de diffusion du principe actif. Egalement, des tensioactifs ioniques ou le DMSO interagissent avec la kératine des cornéocytes, ce qui déploie la structure de la protéine et augmente le coefficient de diffusion. La présente invention décrit une stratégie originale qui consiste à faire participer le principe actif de manière active à son propre transport. Cette association intermoléculaire aura pour but de protéger, solubiliser et véhiculer le médicament jusqu'au site d'action. Pour cela il est proposé d'associer par simple interaction électrostatique acide/base, un principe actif acide avec une molécule amphiphile basique biocompatible. Cette association pourra être stabilisée par des interactions de type hydrophobes entre le principe actif et la molécule amphiphile. En particulier, cette invention concerne des applications en formulation, telles que solubilisation, transport, protection et diffusion transcutanée d'un principe actif. En effet, cette molécule amphiphile pourra également jouer le rôle d'agent de perméabilisation pour un transport transcutané.Permeabilization agents can be classified into different categories. Solvents such as alcohols, methyl sulphoxides and polyols increase the solubility which increases the skin passage. In addition, some solvents such as dimethylsulfoxide (DMSO) or ethanol, will extract the lipids and make the stratum corneum more permeable. Oleic acid and isopropyl myristate are typical examples of permeabilization agents that disrupt the stratum corneum by intercalating into the lipid structures. This emollient effect thus increases the diffusion coefficient of the active ingredient. Also, ionic surfactants or DMSO interact with the keratin of corneocytes, which deploys the structure of the protein and increases the diffusion coefficient. The present invention describes an original strategy of actively involving the active ingredient in its own transport. This intermolecular association will aim to protect, solubilize and convey the drug to the action site. For this purpose, it is proposed to associate, by simple electrostatic acid / base interaction, an acidic active ingredient with a biocompatible basic amphiphilic molecule. This combination can be stabilized by hydrophobic type interactions between the active ingredient and the amphiphilic molecule. In particular, this invention relates to formulation applications, such as solubilization, transport, protection and transcutaneous diffusion of an active ingredient. Indeed, this amphiphilic molecule may also act as a permeabilization agent for transcutaneous transport.

L'invention concerne l'association d'un transporteur basique biocompatible à un principe actif comportant une ou plusieurs fonctions acides. Cette association intermoléculaire conduit à une nouvelle espèce amphiphile correspondant à la formation d'une paire acide/base liée par des interactions électrostatiques et stabilisée par des interactions de type Van der Waals entre les parties hydrophobes des deux constituants. Le complexe amphiphile ainsi formé par association, conduit, en fonction de sa concentration dans l'eau ainsi que de la nature du principe actif (volume, hydrophobie), à un ensemble de structures autoassemblées telles que des micelles ou des vésicules. Les objets ainsi formés pourront également servir à l'auto-transport du principe actif. La présente invention concerne donc un complexe d'association formé entre une molécule amphiphile et un principe actif.The invention relates to the combination of a biocompatible basic transporter with an active ingredient comprising one or more acid functional groups. This intermolecular association leads to a new amphiphilic species corresponding to the formation of an acid / base pair bound by electrostatic interactions and stabilized by Van der Waals interactions between the hydrophobic parts of the two constituents. The amphiphilic complex thus formed by association leads, according to its concentration in water as well as the nature of the active ingredient (volume, hydrophobicity), to a set of self-assembled structures such as micelles or vesicles. The objects thus formed can also be used for the self-transport of the active ingredient. The present invention thus relates to an association complex formed between an amphiphilic molecule and an active ingredient.

L'objet de la présente invention est un complexe d'association intermoléculaire de formule (I) d'un transporteur amphiphile et d'un principe actif " Z-Y:The object of the present invention is an intermolecular association complex of formula (I) of an amphiphilic transporter and an active ingredient " ZY:

dans lequel S représente un résidu d'hydrates de carbone choisi dans le groupe comprenant les monosaccharides, disaccharides, polysaccharides, polyols, ainsi que les combinaisons de ces résidus, in which S represents a carbohydrate residue selected from the group consisting of monosaccharides, disaccharides, polysaccharides, polyols and combinations of these residues,

X représente un résidu aliphatique Cl -C 12 choisi parmi alkyle, alcène, alcyne, linéaire ou ramifié, ou un motif oxyde d'éthylène ou de propylène de degré de polymérisation compris entre 1 et 10 ainsi que toutes les combinaisons de ces résidus,X represents a C 1 -C 12 aliphatic residue chosen from alkyl, alkene, alkyne, linear or branched, or an ethylene oxide or propylene oxide unit having a degree of polymerization of between 1 and 10, as well as all the combinations of these residues,

n = 0 ou ln = 0 or l

R1 représente HR 1 represents H

R2, R3 représentent indépendamment un atome d'hydrogène ou une chaîne hydrocarbonée C1-C20 ou perfluorée, linéaire ou ramifiée, ainsi que toutes les combinaisons de ces substituants, et dans lequel le principe actifR 2 , R 3 independently represent a hydrogen atom or a linear or branched C1-C20 or perfluorinated hydrocarbon chain, as well as all the combinations of these substituents, and in which the active ingredient

Z Y comprend un résiduZ Y includes a residue

Y portant l'activité thérapeutique ou pro-thérapeutique, choisi dans le groupe comprenant les anti-inflammatoires, antibiotiques, chaîne grasse polyinsaturées, vitamines ou pro-vitamines et un résiduY carrying the therapeutic or pro-therapeutic activity, chosen from the group comprising anti-inflammatories, antibiotics, polyunsaturated fatty chain, vitamins or pro-vitamins and a residue

Z acide choisi dans le groupe comprenant les carboxylates, sulfates sulfonates, phosphates, phosphonates ou phosphinates.Z acid selected from the group consisting of carboxylates, sulfates sulfonates, phosphates, phosphonates or phosphinates.

La présente invention concerne également l'utilisation d'un complexe tel que défini ci-dessus pour protéger, solubiliser et/ou véhiculer un principe actif. L'invention concerne également l'utilisation d'un complexe tel que défini précédemment pour la fabrication d'un médicament destiné à une administration par voie topique ou transcutanée. Le transporteur est choisi parmi des molécules amphiphiles biocompatibles présentant une ou plusieurs fonctions basiques.The present invention also relates to the use of a complex as defined above to protect, solubilize and / or convey an active ingredient. The invention also relates to the use of a complex as defined above for the manufacture of a medicament intended for topical or transcutaneous administration. The transporter is selected from biocompatible amphiphilic molecules having one or more basic functions.

Selon la présente invention, le transporteur amphiphile sera choisi parmi les dérivés d'hydrates de carbones présentant une ou plusieurs chaînes hydrophobes, ainsi qu'une ou plusieurs fonctions basiques susceptibles d'interagir de manière électrostatique avec le principe actif acide.According to the present invention, the amphiphilic transporter will be chosen from carbohydrate derivatives having one or more hydrophobic chains, as well as one or more basic functions capable of interacting electrostatically with the active acidic principle.

Ce transporteur amphiphile répond à la formule générale (II) :This amphiphilic carrier has the general formula (II):

dans lequel in which

S représente un résidu d'hydrates de carbone choisi dans le groupe comprenant les monosaccharides, disaccharides, polysaccharides, polyols, ainsi que les combinaisons de ces résidus,S represents a carbohydrate residue selected from the group consisting of monosaccharides, disaccharides, polysaccharides, polyols and combinations of these residues,

X représente un résidu aliphatique Cl -C 12, alcène, alcyne, linéaire ou ramifié, ou un motif oxyde d'éthylène ou de propylène de degré de polymérisation compris entre 1 et 10 ainsi que toutes les combinaisons de ces résidus,X represents a C 1 -C 12 aliphatic residue, alkene, alkyne, linear or branched, or an ethylene oxide or propylene oxide unit with a degree of polymerization of between 1 and 10, as well as all the combinations of these residues,

n = 0 ou 1n = 0 or 1

R1 représente HR 1 represents H

R2, R3 représentent indépendamment un atome d'hydrogène ou une chaîne hydrocarbonée C1-C20 ou perfluorée, linéaire ou ramifiée, ainsi que toutes les combinaisons de ces substituants.R 2 and R 3 independently represent a hydrogen atom or a linear or branched C1-C20 or perfluorinated hydrocarbon chain, as well as all the combinations of these substituents.

Selon la présente invention, le transporteur amphiphile sera avantageusement choisi parmi les tensioactifs aminés à tête sucre et à longue chaîne, tels que les N- alkylamino-1-déoxylactitols comportant une chaîne à 12 ou 16 atomes de carbone que l'on dénommera respectivement Lhydl2 et Lhydlό.According to the present invention, the amphiphilic transporter will advantageously be chosen from sugar-chain and long-chain amino surfactants, such as N- alkylamino-1-deoxylactitols having a chain with 12 or 16 carbon atoms, which will be named respectively Lhydl2 and Lhydlό.

La formule générale des N-alkylamino-1-déoxylactitols est la suivante :The general formula of N-alkylamino-1-deoxylactitols is as follows:

avec m=8 pour le Lhydl2 et avec m=12 pour le Lhydlόwith m = 8 for Lhydl2 and with m = 12 for Lhydlό

Ces dérivés sont préparés selon une des méthodes connues de l'art antérieur (New Journal of Chemistry ,1992, 16(3),3S7; J. Dipersion Science and Technology, 1991,12(3&4), 227.; Langmuir, 1999, 75, 6163. ; Biochimica et biophysica acta, 1992, 1109, 55 ; FR2 661 413 publication du 31 oct. 1991)These derivatives are prepared according to one of the known methods of the prior art (New Journal of Chemistry, 1992, 16 (3), 377, J. Dipersion Science and Technology, 1991, 12 (3 & 4), 227, Langmuir, 1999, 75, 6163. Biochimica et biophysica acta, 1992, 1109, 55, FR2 661 413, published Oct. 31, 1991).

Selon la présente invention, le principe actif sera préférentiellement choisi parmi les anti-inflammatoires non stéroïdiens (AINS) portant une fonction acide, tels que le kétoprofène, l'ibuprofène ou l'indométacine. Egalement les complexes selon la présente invention pourront avantageusement être utilisés pour solubiliser et transporter par association acide/base des acides gras polyinsaturés (AGPI) tels que l'acide linoléique ou l'acide linolénique. En particulier, selon la présente invention, l'association intermoléculaire (stœchiométrique ou non) sera formée par simple mise en contact dans l'eau ou dans un autre solvant, de la molécule amphiphile sous sa forme basique avec le principe actif sous sa forme acide. L'invention concerne donc une association par simple neutralisation acide/base entre le transporteur amphiphile sous sa forme basique et le principe actif sous sa forme acide. L'invention concerne aussi un procédé de préparation des présents complexes. A cette fin on fait avantageusement réagir le mélange stœchiométrique de transporteur amphiphile et de principe actif, en le chauffant à une température comprise entre l'ambiante et la température d'ébullition du solvant à pression atmosphérique, et sur une durée de 1 à 72 heures. Après réaction le mélange final est débarrassé de son eau, préférentiellement filtré et lyophilisé.According to the present invention, the active ingredient will preferably be chosen from non-steroidal anti-inflammatory drugs (NSAIDs) carrying an acid function, such as ketoprofen, ibuprofen or indomethacin. Also, the complexes according to the present invention may advantageously be used to solubilize and transport by acid / base combination polyunsaturated fatty acids (PUFAs) such as linoleic acid or linolenic acid. In particular, according to the present invention, the intermolecular combination (stoichiometric or not) will be formed by simple contact in water or in another solvent, the amphiphilic molecule in its basic form with the active ingredient in its acid form . The invention therefore relates to a combination by simple neutralization acid / base between the amphiphilic transporter in its basic form and the active ingredient in its acid form. The invention also relates to a process for preparing the present complexes. For this purpose, the stoichiometric mixture of amphiphilic carrier and active principle is advantageously reacted by heating it at a temperature between room temperature and the boiling point of the solvent at atmospheric pressure, and for a duration of 1 to 72 hours. . After reaction, the final mixture is freed from its water, preferably filtered and freeze-dried.

Selon des mises en œuvre préférentielles de l'invention, on choisit les réactifs et le solvant comme suit :According to preferred embodiments of the invention, the reactants and the solvent are chosen as follows:

- le transporteur basique est le Lhydl2 ou le Lhydlόthe basic carrier is Lhydl2 or Lhydlό

- le principe actif est l'indométacine, l'ibuprofène, le kétoprofène ou l'acide linoléique.the active principle is indomethacin, ibuprofen, ketoprofen or linoleic acid.

- le solvant est l'eau ou le méthanol.the solvent is water or methanol.

Exemple 1 :Example 1

A une solution de 337,7 mg (0,66mmol) de Lhydl2 dans 30 ml d'eau distillée maintenue à 25°C, on ajoute sous agitation magnétique 138,9 mg (0,66 mmol) d'ibuprofène. Le mélange est maintenu sous agitation pendant 24 heures. Après réaction, la solution aqueuse contenant l'association est évaporée sous pression réduite à la pompe pour obtenir au final 476,6 mg de produit. L'association constitue une nouvelle espèce amphiphile qui forme des agrégats de 80 nm de diamètre à partir d'une CAC de 10"3M.To a solution of 337.7 mg (0.66 mmol) of LhydI 2 in 30 ml of distilled water maintained at 25 ° C., 138.9 mg (0.66 mmol) of ibuprofen are added with magnetic stirring. The mixture is stirred for 24 hours. After reaction, the aqueous solution containing the combination is evaporated under reduced pressure at the pump to finally obtain 476.6 mg of product. The association constitutes a novel amphiphilic species which forms aggregates of 80 nm in diameter from a CAC 10 "3 M.

Exemple 2 :Example 2

A une solution de 337,7 mg (0,66 mmol) de Lhyd 12 dans 30 mL d'eau distillée maintenue à 25°C, on ajoute sous agitation magnétique 171,3 mg (0,66 mmol) de kétoprofène. Le mélange est maintenu sous agitation pendant 24 heures. Après réaction, la solution aqueuse contenant l'association est évaporé sous pression réduite à la pompe pour obtenir au final 509 mg de produit. L'association constitue une nouvelle espèce amphiphile qui forme deux populations d'agrégats de 20 et 260 nm de diamètre à partir d'une CAC de 1,3 10" To a solution of 337.7 mg (0.66 mmol) of Lhyd 12 in 30 mL of distilled water maintained at 25 ° C, 171.3 mg (0.66 mmol) of ketoprofen was added with magnetic stirring. The mixture is stirred for 24 hours. After reaction, the aqueous solution containing the combination is evaporated under reduced pressure at the pump to finally obtain 509 mg of product. The association is a new amphiphilic species that forms two populations of aggregates 20 and 260 nm in diameter from a CAC of 1.3 10 "

3M. 3 M.

Exemple 3 :Example 3

A une solution de 337,9 mg (0,66 mmol) de Lhyd 12 dans 30 mL d'eau distillée maintenue à 25°C, on ajoute sous agitation magnétique 236,3 mg (0,66 mmol) d'indométacine. Le mélange est maintenu sous agitation pendant 24 heures. Après réaction, la solution aqueuse contenant l'association est lyophilisée pour obtenir au final 574,2 mg de produit.To a solution of 337.9 mg (0.66 mmol) of Lhyd 12 in 30 ml of distilled water maintained at 25 ° C, 236.3 mg (0.66 mmol) of indomethacin is added with magnetic stirring. The mixture is stirred for 24 hours. After reaction, the aqueous solution containing the combination is lyophilized to finally obtain 574.2 mg of product.

L'association constitue une nouvelle espèce amphiphile qui forme des agrégats d'un diamètre inférieur à 10 nm à partir d'une CAC de 10"3M.The association constitutes a new amphiphilic species which forms aggregates with a diameter of less than 10 nm from a CAC of 10 "3 M.

Exemple 4 :Example 4

A une solution de 536,9 mg (0,91 mmol) de Lhyd 16 dans 42 mL d'eau distillée maintenue à 25°C et sous agitation magnétique, on ajoute 328,2 mg (0,91 mmol) d'indométacine. Le mélange est maintenu sous agitation pendant 24 heures. Après réaction, la solution aqueuse contenant l'association est lyophilisée pour obtenir au final 865,1 mg de produit.To a solution of 536.9 mg (0.91 mmol) of Lhyd 16 in 42 mL of distilled water maintained at 25 ° C and with magnetic stirring, 328.2 mg (0.91 mmol) of indomethacin is added. The mixture is stirred for 24 hours. After reaction, the aqueous solution containing the combination is lyophilized to finally obtain 865.1 mg of product.

L'association constitue une nouvelle espèce amphiphile qui forme des agrégats d'un diamètre de 50 nm à partir d'une CAC de 4,5 10^ M.The association constitutes a new amphiphilic species that forms aggregates with a diameter of 50 nm from a CAC of 4.5 × 10 ^ M.

Exemple 5 :Example 5

Etude de pénétration transcutanée menée sur deux associations réalisées avec l'indométacine et les Lhydl2 et Lhydlô. L'étude de passage est réalisée ex vivo sur de la peau d'oreille de porc en dose infinie et sous occlusion. Les formules testées sont réalisées en solution aqueuse tandis que le contrôle indométacine seule est préparé en gel hydroalcoolique (pour des raisons de solubilité). Les différentes formules sont les suivantes :Transcutaneous penetration study conducted on two combinations made with indomethacin and Lhydl2 and Lhydlo. The passage study is performed ex vivo on pork ear skin in infinite dose and under occlusion. The formulas tested are carried out in aqueous solution while the indomethacin control alone is prepared in hydroalcoholic gel (for reasons of solubility). The different formulas are:

- formule A : préparation de l'indométacine à 2,5% en gel hydroalcoolique (EtOH/eau 75/25)formula A: preparation of 2.5% indomethacin in hydroalcoholic gel (EtOH / water 75/25)

- formule B : préparation d'une association à 2,5% en indométacine en solution aqueuse formule Bl : association indométacine associée au Lhydlό formule B2 : association indométacine associée au Lhydl2formula B: preparation of a 2.5% combination of indomethacin in aqueous solution B1: indomethacin combination with Lhydlό formula B2: indomethacin combination with Lhydl2

- formule C : préparation d'une association à 2,5% en indométacine en gel aqueux à 1,5% en viscosant formule Cl : association indométacine associée au Lhydlόformula C: preparation of a 2.5% indomethacin combination in a 1.5% aqueous gel by viscosizing Cl: indomethacin combination with Lhydlό

Les quantités cumulées d' indométacine mesurées au bout de 24 heures sont représentées ci-dessous :The cumulative amounts of indomethacin measured after 24 hours are shown below:

Exemple 6 : Example 6

469,7 mg de Lhyd 12 (0,66 mmol) sont solubilisés dans 30 ml de méthanol. 208 μl (0,66 mmol) d'acide linoléique prélevés sous azote sont ensuite introduits dans la solution aqueuse sans aucune précaution particulière vis-à-vis de l'air et de la lumière. La solution est maintenue sous agitation pendant 24 heures. Le méthanol est ensuite évaporé sous pression réduite pour conduire à un gel. Ce dernier est repris dans l'eau et lyophilisé pour conduire au final à 655 mg de produit. L'association constitue une nouvelle espèce amphiphile qui forme deux populations d'agrégats d'un diamètre de 200 et 1000 nm à partir d'une CAC de 2,5 10"2 M.469.7 mg of Lhyd 12 (0.66 mmol) are solubilized in 30 ml of methanol. 208 μl (0.66 mmol) of linoleic acid taken under nitrogen are then introduced into the aqueous solution without any particular precautions with respect to air and light. The solution is stirred for 24 hours. The methanol is then evaporated under reduced pressure to give a gel. The latter is taken up in water and lyophilized to ultimately produce 655 mg of product. The association constitutes a new amphiphilic species that forms two populations of aggregates with a diameter of 200 and 1000 nm from a CAC of 2.5 10 -2 M.

Exemple 7 :Example 7

564,6 mg (0,96 mmol) de Lhyd 16 sont introduits dans 42 ml de méthanol. 302 μl (0,96 mmol) d'acide linoléique prélevés sous azote sont ensuite ajoutés à la suspension sans aucune précaution particulière vis-à-vis de l'air et de la lumière. Après 4 jours d'agitation à température ambiante, la solution est évaporée sous pression réduite pour conduire à un gel. Ce dernier est repris dans l'eau et lyophilisé pour conduire au final à 833.6 mg de produit. 564.6 mg (0.96 mmol) of Lhyd 16 are introduced into 42 ml of methanol. 302 μl (0.96 mmol) of linoleic acid taken under nitrogen are then added to the suspension without any particular precaution with respect to air and light. After stirring for 4 days at room temperature, the solution is evaporated under reduced pressure to give a gel. The latter is taken up in water and lyophilized to ultimately lead to 833.6 mg of product.

Claims

REVENDICATIONS 1. Complexe d'association intermoléculaire de formule (I) d'un transporteur amphiphile et d'un principe actif " Z-Y:1. Intermolecular association complex of formula (I) of an amphiphilic transporter and an active ingredient " ZY: dans lequel in which S représente un résidu d'hydrates de carbone choisi dans le groupe comprenant les monosaccharides, disaccharides, polysaccharides, polyols, ainsi que les combinaisons de ces résidus,S represents a carbohydrate residue selected from the group consisting of monosaccharides, disaccharides, polysaccharides, polyols and combinations of these residues, X représente un résidu aliphatique Cl -C 12 choisi parmi alkyle, alcène, alcyne, linéaire ou ramifié, ou un motif oxyde d'éthylène ou de propylène de degré de polymérisation compris entre 1 et 10 ainsi que toutes les combinaisons de ces résidus,X represents a C 1 -C 12 aliphatic residue chosen from alkyl, alkene, alkyne, linear or branched, or an ethylene oxide or propylene oxide unit having a degree of polymerization of between 1 and 10, as well as all the combinations of these residues, n = 0 ou 1n = 0 or 1 R1 représente HR 1 represents H R2, R3 représente indépendamment un atome d'hydrogène ou une chaîne hydrocarbonée C1-C20 ou perfluorée, linéaire ou ramifiée, ainsi que toutes les combinaisons de ces substituants, et dans lequel le principe actifR 2 , R 3 independently represents a hydrogen atom or a linear or branched C1-C20 or perfluorinated hydrocarbon chain, as well as all the combinations of these substituents, and in which the active ingredient Z Y comprend un résiduZY includes a residue Y portant l'activité thérapeutique ou pro-thérapeutique, choisi dans le groupe comprenant les anti-inflammatoires, antibiotiques, chaîne grasse polyinsaturées, vitamines ou pro-vitamines, et un résiduY carrying the therapeutic or pro-therapeutic activity, chosen from the group comprising anti-inflammatories, antibiotics, polyunsaturated fatty chain, vitamins or pro-vitamins, and a residue Z acide choisi dans le groupe comprenant les carboxylates, sulfates sulfonates, phosphates, phosphonates ou phosphinates.Z acid selected from the group consisting of carboxylates, sulfates sulfonates, phosphates, phosphonates or phosphinates. 2. Complexe d'association intermoléculaire selon la revendication 1, caractérisé en ce que le transporteur amphiphile est choisi parmi les N-alkylamino-1-déoxylactitols de formule2. Intermolecular association complex according to claim 1, characterized in that the amphiphilic transporter is chosen from N-alkylamino-1-deoxylactitols of formula avec m = 8 ou m = 12. with m = 8 or m = 12. 3. Complexe d'association intermoléculaire selon la revendication 1, caractérisé en ce que le principe actif est choisi parmi l'indométacine, l'ibuprofène, le kétoprofène ou l'acide linoléïque.3. Intermolecular association complex according to claim 1, characterized in that the active ingredient is chosen from indomethacin, ibuprofen, ketoprofen or linoleic acid. 4. Utilisation d'un complexe selon l'une des revendications 1 à 3, pour protéger, solubiliser et/ou véhiculer un principe actif.4. Use of a complex according to one of claims 1 to 3, to protect, solubilize and / or convey an active ingredient. 5. Utilisation d'un complexe selon l'une des revendications 1 à 3 pour la fabrication d'un médicament destiné à une administration par voie topique ou transcutanée. 5. Use of a complex according to one of claims 1 to 3 for the manufacture of a medicament for topical or transcutaneous administration.
EP06777885A 2005-07-22 2006-07-21 Intermolecular association complex of a carrier and of an active principle Withdrawn EP1917036A2 (en)

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PCT/EP2006/064502 WO2007010032A2 (en) 2005-07-22 2006-07-21 Intermolecular association complex of a carrier, preferably an n-alkylamino -1-desoxylactitol and of an active ingredient

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US5977088A (en) * 1991-07-03 1999-11-02 Hyal Pharmaceutical Corporation Formulations containing hyaluronic acid
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