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Definitions

• the present invention relates to terphenyl derivatives, to their preparation and to pharmaceutical compositions containing them.
• - R represents hydrogen or a (C ⁇ - 4) alkyl
• R2 represents:. a group (C -C ⁇ ⁇ lkyle
• an indan-1-yl or 1,2,3,4-tetrahydronaphthalen-1-yl group said groups being unsubstituted or substituted by a halogen atom and / or a methyl group; . a saturated monoazotated heterocyclic radical of 5 to 7 atoms, the nitrogen atom being substituted by a (C ⁇ -C4) alkyl, benzyl, (C ⁇ -C3) aIcoxycarbonyIe or (C ⁇ -C4) alkanoyl group; . an NR9R10 group;
• R3, R4, R5, R ⁇ , R7, Rg each independently of one another represent a hydrogen or halogen atom, a (C ⁇ -Cg ⁇ lkyle, (C ⁇ -C6) alkoxy or trifluoromethyl group ;
• - R9 and RJO together with the nitrogen atom to which they are linked constitute a heterocyclic radical, saturated or unsaturated, of 5 to 10 atoms, containing or not a second heteroatom chosen from O or N, said radical being unsubstituted or substituted one or more times by a group (C ⁇ -C4) alkyl, hydroxyl, or (Ci-C4) alkoxy;
• R ⁇ represents:. phenyl unsubstituted or substituted by one or more substituents chosen from a halogen atom or a methyl group;
• - m 0, 2 or 3; as well as their salts, their solvates and their hydrates.
• the compounds of formula (I) can exist in the form of bases or of addition salts with acids. These salts are advantageously prepared with pharmaceutically acceptable acids, but the salts of other acids useful, for example, for the purification or isolation of the compounds of formula (I) also form part of the invention.
• alkyl group is meant a linear or branched radical, such as, in particular: methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, n-hexyl, isohexyl, the methyl group being preferred for a (C -
• group (C ⁇ -C6) alkoxy means a linear or branched radical containing 1 to 6 carbon atoms, the methoxy group being preferred.
• halogen atom is meant a fluorine, chlorine, bromine or iodine atom; fluorine, chlorine or bromine atoms being preferred.
• Non-aromatic C3-C12 carbocyclic radicals include mono or polycyclic, condensed or bridged radicals.
• Monocyclic radicals include cycloalkyls, for example cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl; cyclohexyl and cyclopentyl being preferred.
• the condensed, bridged or spiranic di- or tricyclic radicals include, for example, the norbornyl, bornyl, isobornyl, noradamantyl, adamantyl, spiro [5.5] undecanyl, bicyclo [2.2.1] heptanyl radicals; spiro [5.5] undecanyl and bicyclo [2.2.1] heptanyl being preferred.
• heterocyclic radical saturated or unsaturated, of 5 to 10 atoms, containing or not containing a second heteroatom such as O or N
• radicals such as morpholin-4-yl, piperidin-1-yl, piperazin-1-yl, pyrrolidin-1-yle, 3,6-dihydropyridin-l-yle, octahydrocyclopenta [c] pyrrol-2-yle, the radicals pyrrolidin-1-yle, piperidin-1-yle and morpholin-4-yle being preferred.
• Rj represents a hydrogen atom or a (Cj-C4) alkyl group
• R represents an NR9R10 group or a non-aromatic C3-C12 carbocyclic radical ! unsubstituted or substituted one or more times by a methyl group;
• R3, R4, R5, Rg, R7 and Rg each independently of one another represent a hydrogen or halogen atom, a (C ⁇ -Cg) alkyl, (C ⁇ -Cg) alkoxy or trifluoromethyl group;
• - R9 and RI Q together with the nitrogen atom to which they are bonded constitute a heterocyclic radical, saturated or unsaturated, of 5 to 10 atoms, containing or not a second heteroatom chosen from O or N, said radical being unsubstituted or substituted one or more times by a (C ⁇ -Cg) alkyl group; as well as their salts, their solvates and their hydrates.
• Rj represents a hydrogen atom
• R2 represents a group chosen from piperidin-1-yl, pyrrolidin-1-yl, cyclohexyl, spiro [5.5] undecanyl, l, 3,3-trimethylbicyclo [2.2.1] heptan-2-yl; and / or - at least one of the substituents R3, R4, R5 represents a halogen atom or a trifluoromethyl group; and / or at least one of the substituents Rg, R7, Rg represents a halogen atom.
• the present invention also relates to a process for the preparation of the compounds of formula (I).
• This process is characterized in that a functional derivative of terphenylic acid of formula is treated: in which R3, R4, R5, Rg, R7, Rg are as defined for (I) with an amine of formula HNR1 R2 (III) in which R ⁇ and R2 are as defined for (I).
• the compound thus obtained is transformed into one of its salts and / or solvates.
• the acid chloride, anhydride, a mixed anhydride, a C1-C4 alkyl ester in which the alkyl is straight or branched, an activated ester can be used.
• -nitrophenyl ester or free acid suitably activated, for example, with N, N-dicyclohexylcarbodiimide or with benzotriazol hexafluorophosphate-1-yIoxytris (dimethylamino) phosphonium (BOP).
• the chloride of pyrazole-3-carboxylic acid obtained by reaction of thionyl chloride on the acid of formula (II), with an amine HNR1R2, in a solvent inert such as a chlorinated solvent (dichloromethane, dichloroethane, chloroform for example), an ether (tetrahydrofuran, dioxane for example) or an amide (N, N-dimethylformamide for example) under an inert atmosphere, at a temperature included between 0 ° C and room temperature, in the presence of a tertiary amine such as triethylamine, N-methylmorpholine or pyridine.
• a solvent inert such as a chlorinated solvent (dichloromethane, dichloroethane, chloroform for example), an ether (tetrahydrofuran, dioxane for example) or an amide (N, N-dimethylformamide for example) under an inert atmosphere, at
• a variant consists in preparing the mixed anhydride of the acid of formula (II) by reaction of ethyl chloroformate with the acid of formula (II), in the presence of a base such as triethylamine, and in doing so react with an amine HNR] R2, in a solvent such as dichloromethane, under an inert atmosphere, at room temperature, in the presence of a base such as triethylamine.
• Alk (C 1 -C 4 ) alkyl
• step a j the reaction of the organoborate of formula (IN) with an ester of 4-hydroxy-3-iodobenzoic acid is carried out according to Farmaco Ed. Sci., 1958, 13, 121 using the conditions described by Suzuki in Helv. Chim. Acta, 1992, 75, 855.
• step b j the triflic anhydride ((Tf) 2 ⁇ ) is made to act in pyridine to prepare the compound of formula (NI).
• This compound is coupled, in step c ⁇ with an organoborate of formula (VII) according to the conditions described in J. Org. Chem., 1992, 57, 379.
• the terphenyl ester thus formed is then saponified by known methods, for example in the presence of potassium hydroxide, to yield the acid of formula (II).
• R3, R4, R5, Rg, R7, Rg are as defined for (I) and R represents a hydrogen atom or a (C ⁇ -C4) alkyl group provided that R3, R4, R5, Rg, R7, Rg are not simultaneously hydrogen, and on the condition that when R4, R5, R7 and Rg represent hydrogen, R3 and Rg do not simultaneously represent a fluorine atom in meta, nor a methoxy group in meta or in para, and on the condition that when R5 and Rg represent hydrogen, R3, R4 and R5, Rg do not simultaneously represent 3,4-dimethoxy groups.
• R3 is in position -4 and represents a halogen atom or a trifluoromethyl group
• Rg is in position -2 and represents a hydrogen or halogen atom
• R7 is in position -4 and represents a halogen atom
• the amines HNR] R2 (III) are known or prepared by known methods, for example: Chem. Ber., 1986, U9, 1413-1423.
• the compounds of formula (I) have a very good in vitro affinity (IC 50 ⁇ -7 10 M) for the cannabinoid receptors CB] _, under the experimental conditions described by M. Rinaldi-Carmona et al. (FEBS Letters, 1994, 350, 240-
• the present invention relates to the use of a compound of formula (I), or of one of its pharmaceutically acceptable salts, solvates or hydrates, for the preparation of medicaments intended for treating diseases involving CB ⁇ cannabinoid receptors.
• the compounds of formula (I) are useful as psychotropic drugs, in particular for the treatment of psychiatric disorders including anxiety, depression, mood disorders, insomnia, delusional disorders , obsessive-compulsive disorder, psychosis in general, schizophrenia, as well as for the treatment of disorders linked to the use of psychotropic substances, in particular in the case of substance abuse and / or dependence on a substance, including alcohol dependence and nicotine dependence.
• the compounds of formula (I) according to the invention can be used as medicaments for the treatment of migraine, stress, diseases of psychosomatic origin, attacks of panic attacks, epilepsy, movement disorders , especially dyskinesia or Parkinson's disease, tremors and dystonia.
• the compounds of formula (I) according to the invention can also be used as medicaments in the treatment of memory disorders, cognitive disorders, in particular in the treatment of senile dementias, of Alzheimer's disease, as well as in the treatment of attention or alertness disturbances.
• the compounds of formula (I) can be useful as neuroprotectors, in the treatment of ischemia, head trauma and the treatment of neurodegenerative diseases: including chorea, Huntington's chorea, Tourrette syndrome.
• the compounds of formula (I) according to the invention can be used as medicaments in the treatment of pain: neuropathic pain, acute peripheral pain, chronic pain of inflammatory origin.
• the compounds of formula (I) according to the invention can be used as medicaments in the treatment of appetite disorders, palatability (for sugars, carbohydrates, drugs, alcohols or any appetizing substance) and / or conduct food, especially as appetite suppressants or for the treatment of obesity or bulimia as well as for the treatment of type II diabetes or non-insulin dependent diabetes.
• the compounds of formula (I) according to the invention can be used as medicaments in the treatment of gastrointestinal disorders, diarrheal disorders, ulcers, vomiting, disorders bladder and urinary tract, endocrine disorders, cardiovascular disorders, hypotension, hemorrhagic shock, septic shock, chronic cirrhosis of the liver, asthma, Raynaud's syndrome, glaucoma, fertility disorders, inflammatory phenomena, diseases of the immune system, in particular autoimmune and neuroinflammatory such as rheumatoid arthritis, reactive arthritis, diseases causing demyelination, multiple sclerosis, infectious and viral diseases such as encephalitis, stroke as well as drugs for cancer chemotherapy and for the treatment of Guillain-Barré syndrome.
• autoimmune and neuroinflammatory such as rheumatoid arthritis, reactive arthritis, diseases causing demyelination, multiple sclerosis, infectious and viral diseases such as encephalitis, stroke as well as drugs for cancer chemotherapy and for the treatment of Guillain-Barré syndrome.
• the compounds of formula (I) are very particularly useful for the treatment of psychotic disorders, in particular schizophrenia; for the treatment of appetite disorders and obesity for the treatment of memory and cognitive disorders; for the treatment of alcohol dependence, nicotine dependence, that is to say for alcohol withdrawal and for smoking cessation.
• the present invention relates to the use of a compound of formula (I) of its pharmaceutically acceptable salts and their solvates or hydrates for the treatment of the disorders and diseases indicated above.
• the compound according to the invention is generally administered in dosage units.
• Said dosage units are preferably formulated in pharmaceutical compositions in which the active principle is mixed with a pharmaceutical excipient.
• the present invention relates to pharmaceutical compositions containing, as active principle, a compound of formula (I), one of its pharmaceutically acceptable salts or one of their solvates.
• the compound of formula (I) above and its pharmaceutically acceptable salts or solvates can be used in daily doses of 0.01 to 100 mg per kg of body weight of the mammal to be treated, preferably in daily doses of 0, 02 to 50 mg / kg.
• the dose may preferably vary from 0.05 to 4000 mg per day, more particularly from 0.1 to 1000 mg per day depending on the age of the subject to be treated or the type of treatment, namely prophylactic or curative. Although these dosages are examples of average situations, there may be special cases where higher or lower dosages are appropriate, such dosages also belong to the invention.
• the appropriate dosage for each patient is determined by the doctor according to the mode of administration, the age, the weight and the response of said patient.
• the active principle can be administered in unit administration form, in admixture with carriers conventional pharmaceuticals, animals and humans.
• suitable unit administration forms include oral forms such as tablets, capsules, powders, granules and oral solutions or suspensions, sublingual and oral administration forms, aerosols, administration forms topical, implants, subcutaneous, intramuscular, intravenous, intranasal or intraocular administration forms and forms of rectal administration.
• the active ingredient is generally formulated in dosage units containing from 0.05 to 1000 mg, advantageously from 0.1 to 500 mg, preferably from 1 to 200 mg of said active ingredient per unit of dosage for daily administrations.
• the following abbreviations are used:
• the compounds according to the invention are analyzed by LC / UV / MS coupling (liquid chromatography / UV detection / mass spectrometry). The molecular peak (M) and the retention time (t) in minutes are measured.
• the eluent is composed as follows: solvent A: 0.025% trifluoroacetic acid (TFA) in water - solvent B: 0.025% TFA in acetonitrile.
• UV detection is carried out between 210 nm and 400 nm and mass detection in chemical ionization mode at atmospheric pressure.
• NMR nuclear magnetic resonance
• a solution containing 0.17 ml of aminopiperidine and 0.22 ml of triethylamine in 10 ml of DCM is prepared, this solution is cooled to 0 ° C and 5 ° C and 0.52 g is added dropwise acid chloride obtained in the previous step in 10 ml of DCM. It is left for 2 days at + 4 ° C. Poured onto ice water then extracted with DCM and washed with a 5% Na2CO3 solution and then a saturated NaCl solution.

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