EP4236963A1 - 5alpha-hydroxy-6beta-[2-(1-h-imidazol-4-yl)-ethylamino]-cholestan-3beta-ol analogues and pharmaceutical compositions comprising same for use in the treatment of cancer - Google Patents
5alpha-hydroxy-6beta-[2-(1-h-imidazol-4-yl)-ethylamino]-cholestan-3beta-ol analogues and pharmaceutical compositions comprising same for use in the treatment of cancerInfo
- Publication number
- EP4236963A1 EP4236963A1 EP21801547.7A EP21801547A EP4236963A1 EP 4236963 A1 EP4236963 A1 EP 4236963A1 EP 21801547 A EP21801547 A EP 21801547A EP 4236963 A1 EP4236963 A1 EP 4236963A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compound
- cholestan
- imidazol
- hydroxy
- ethylamino
- 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.)
- Pending
Links
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
- A61K31/58—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids containing heterocyclic rings, e.g. danazol, stanozolol, pancuronium or digitogenin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
- A61K31/575—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of three or more carbon atoms, e.g. cholane, cholestane, ergosterol, sitosterol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J43/00—Normal steroids having a nitrogen-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton
- C07J43/003—Normal steroids having a nitrogen-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton not condensed
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
- A61K31/235—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids having an aromatic ring attached to a carboxyl group
- A61K31/24—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids having an aromatic ring attached to a carboxyl group having an amino or nitro group
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/357—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel
- A61K31/36—Compounds containing methylenedioxyphenyl groups, e.g. sesamin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/02—Antineoplastic agents specific for leukemia
Definitions
- the invention relates to the field of sterol compounds and more particularly to analogues of the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol and pharmaceutical compositions comprising them for their use in the treatment of cancer.
- cancer or "cancerous tumor” encompasses a group of diseases characterized by the uncontrolled growth and spread of abnormal cells. If the cancer cells are not eliminated, the evolution of the disease will more or less quickly lead to the death of the affected person.
- Cancer management involves surgery, radiotherapy and chemotherapy, which can be used alone or in combination, simultaneously or sequentially.
- Chemotherapy uses antineoplastic agents which are drugs that prevent or inhibit the maturation and proliferation of neoplasms.
- Antineoplastic agents work by effectively targeting rapidly dividing cells. Because antineoplastic agents affect cell division, tumors with a high growth rate (such as acute myeloid leukemia and aggressive lymphomas, including Hodgkin's disease) are more susceptible to chemotherapy because a greater proportion of cells targets undergo cell division at any time. Malignant tumors with slower growth rates, such as indolent lymphomas, tend to respond much more modestly to chemotherapy. However, the development of drug resistance is a persistent problem during chemotherapy treatment.
- AML acute myeloid leukemia
- anthracycline such as daunorubicin
- the overall 5-year survival rate is 40% in young adults and about 10% in elderly patients. Response rates vary considerably with aging, from 40% to 55% in patients over 60 and from 24% to 33% in patients over 70. This is even worse for the elderly with unfavorable cytogenetic profiles and death within 30 days of treatment ranges from 10% to 50% with age and worsening.
- the restriction of the use of these molecules is also due to effects secondary, and in particular the emergence of chronic cardiac toxicity (linked to anthracyclines).
- the toxic mortality rate linked to intensive chemotherapy is 10 to 20% in patients over 60 years of age.
- Dendrogenin A is able to restore the sensitivity of chemoresistant tumors to an antineoplastic agent or to increase the effects of antineoplastic agents on tumors, which in turn makes it possible to reduce the effective cytotoxic dose of antineoplastic agents against chemosensitive tumors.
- the document by De Medina et al. J. Med. Chem., 2009, 52(23), 7765-77, XP9131948, Synthesis of new alkylaminooxysterols with potent cell differentiating activities: identification of leads for the treatment of cancer and neurodegenerative diseases) describes Dendrogenin A derivatives for which the alcohol in the 3p position is optionally functionalized with a methanoate or propanoate radical, for the treatment of cancer.
- the object of the present invention is to provide new compounds and analogues of the compound Dendrogenin A, which are useful for treating cancerous tumours, in particular chemosensitive and/or chemoresistant tumours.
- the first subject of the invention is a compound of formula (I); or a pharmaceutically acceptable salt of such a compound, in which:
- Ri is chosen from F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO2R2 , with n ⁇ 8,
- R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, optionally containing one or more substituents chosen from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament, and more particularly as a medicament for regressing a mammalian cancerous tumor.
- a second subject of the invention is a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one compound of formula (I) for its use in regressing a cancerous tumor of a mammal.
- solvate is used herein to describe a molecular complex comprising a compound of the invention and containing stoichiometric or sub- stoichiometric values of one or more pharmaceutically acceptable solvent molecules such as ethanol.
- solvent molecules such as ethanol.
- hydrate refers when said solvent is water.
- human refers to a subject of either sex and any stage of development (i.e. newborn, infant, juvenile, adolescent, adult).
- patient refers to a warm-blooded animal, more preferably a human, who is awaiting reception or receiving medical treatment and/or who will be the subject of a medical procedure.
- pharmaceutical vehicle means an inert carrier or medium used as a solvent or diluent in which the pharmaceutically active agent is formulated and/or administered.
- pharmaceutical carriers include creams, gels, lotions, solutions and liposomes.
- administration means to deliver, the active agent or active ingredient (e.g. the compound of formula (I), in a pharmaceutically acceptable composition, to the patient in which a condition, symptom and/or a disease must be treated.
- the active agent or active ingredient e.g. the compound of formula (I)
- treat and “treatment” as used herein include alleviating, alleviating, stopping, curing a condition, symptom and/or disease.
- analog as used herein means a compound having a similar chemical structure to another reference compound, but differing from it in some component. It may differ by one or more atoms, functional groups, substructures, which are replaced by other atoms, functional groups or substructures. Analogs may have different physical, chemical, biochemical or pharmacological properties. In the present invention, the analogous compounds refer to the compound Dendrogenin A. These analogs have identical or similar pharmacological properties with respect to the reference compound.
- chemoresistant cancer we mean a cancer in a patient where the proliferation of cancerous cells cannot be prevented or inhibited by means of an antineoplastic agent or a combination of antineoplastic agents usually used to treat this cancer , at a dose acceptable to the patient.
- Tumors can be intrinsically resistant prior to chemotherapy, or resistance may be acquired during treatment by tumors initially sensitive to chemotherapy.
- chemosensitive cancer is meant a cancer in a patient which responds to the effects of an antineoplastic agent, i.e. the proliferation of cancer cells can be prevented by means of said antineoplastic agent at a dose acceptable to the patient.
- the compound of formula (I) belongs to the group of steroids.
- the numbering of the carbon atoms of the compound of formula (I) therefore follows the nomenclature defined by the IUPAC in Pure & AppL Chem., Vol.61, No.10, pp.1783-1822,1989.
- the numbering of the carbon atoms of a compound belonging to the group of steroids according to IUPAC is shown below:
- AML acute myeloid leukemia
- Dendrogenin A 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol;
- MCF-7 Michigan Cancer Foundation-7
- DMEM Dulbecco's Modified Eagle Medium
- FCS fetal calf serum
- Ch EH Cholesterol Epoxide Hydrolase
- Neuro2a murine neuroblastoma
- PBS phosphate buffered saline
- DMSO dimethyl sulfoxide
- OD optical density or absorbance
- CT cholestane-3p,5a,6p-triol
- 5,6a-EC 5,6a-epoxycholesterol
- Tam Tamoxifen
- the invention relates firstly to a compound of formula (I); or a pharmaceutically acceptable salt of such a compound, in which:
- Ri is chosen from F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO2R2, with n ⁇ 8,
- R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, optionally containing one or more substituents selected from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament.
- the invention relates to a compound of formula (I); or a pharmaceutically acceptable salt of such a compound, in which:
- Ri is chosen from F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO 2 R 2 , with n ⁇ 8,
- R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, optionally containing one or more substituents chosen from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament for regressing a mammalian cancerous tumor.
- arene refers to all monocyclic and polycyclic aromatic hydrocarbons
- heterocyclic refers to monocyclic and polycyclic aromatic compounds comprising as cyclic elements one or more heteroatoms from among O, S and/or N.
- the radical of carbon 3 can be in position a or p.
- the p position being a preferred embodiment.
- the compound of formula (I) is more particularly 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-3p-acetamide (named DX127) .
- the compound of formula (I) is more particularly 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-3p-amino (named DX125) .
- the compound of formula (I) is more particularly 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-3p-azide (named DX123) .
- the compound of formula (I) is 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro (named DX111 ).
- the compound of formula (I) is an O-alkyl analogue such as 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p - methoxyl (DX103) and 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxyl (DX105).
- the compound of formula (I) is preferably 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-methylsulfonyl (named DX129 ).
- the compound of formula (I) is intended for use in the treatment of cancer of the breast, prostate, colorectal, lung, bladder, skin, uterus , cervix, mouth, brain, stomach, liver, throat, larynx, esophagus, bone, ovary, pancreas, kidney , retina, sinus, nasal cavities, testis, thyroid, vulva, treatment of lymphoma, non-Hodgkin's lymphoma, Hodgkin's lymphoma, leukemia, acute myeloid leukemia or acute lymphocytic leukemia, the multiple myeloma, Merkel cell carcinoma or mesothelioma.
- the cancer is acinar adenocarcinoma, acinar carcinoma, acrolentiginous melanoma, actinic keratosis, adenocarcinoma, adenoid cystic carcinoma, adenosquamous carcinoma, adnexal carcinoma, rest tumor adrenal, adrenocortical carcinoma, aldosterone-secreting carcinoma, alveolar soft tissue sarcoma, ameloblastic thyroid carcinoma, angiosarcoma, apocrine carcinoma, Askin tumor, astrocytoma, basal cell carcinoma, basaloid carcinoma, basosquamous carcinoma, bile duct cancer , bone marrow cancer, botryoid sarcoma, bronchioalveolar carcinoma, bronchogenic adenocarcinoma, bronchogenic carcinoma, carcinoma ex pleomorphic adenoma, chloroma, cholangiocellular carcinoma, chondrosarcom
- the compound is for use in the treatment of a chemosensitive cancer.
- the compound of formula (I) is intended for use in the treatment of a chemoresistant cancer.
- the chemoresistant cancer is a hematological or blood cancer, such as leukemia, in particular acute myeloid leukemia or acute lymphocytic leukemia, lymphoma, in particular non-Hodgkin's lymphoma and myeloma multiple.
- leukemia in particular acute myeloid leukemia or acute lymphocytic leukemia
- lymphoma in particular non-Hodgkin's lymphoma and myeloma multiple.
- the cancer is chemoresistant to daunorubicin, cytarabine, fluorouracil, cisplatin, all-trans-retinoic acid, arsenic trioxide, bortezomib, or one of of their combinations.
- All references to compounds of formula (I) include references to salts, multi-component complexes and their liquid crystals. All references to compounds of formula (I) also include references to polymorphs and their usual crystals.
- the compound according to the invention may be in the form of pharmaceutically acceptable salts.
- a pharmaceutically acceptable salt of the compound of formula (I) comprises the acid addition thereof.
- Suitable acid salts are formed from acids that form non-toxic salts. For example chosen from: acetate, adipate, benzoate, bicarbonate, carbonate, bisulfate, sulfate, borate, camsylate, citrate, cyclamate, edisylate, esylate, formate, furamate, gluceptate, gluconate, glucuronate, hexafluorophosphate, hibenzate, chloride hydrochloride, hydrobromide, bromide, hydroiodide, iodide, isethionate, lactate, malate, maleate, malonate mesylate, methylsulfate, naphthylate, 2-napsylate, nicotinate, nitrate, orotate, oxalate, palmitate, pamoate, phosphate, hydrogen phosphate, dihydrogen phosphate, pyroglutamate, saccarate, sterate, succinate,
- compositions of formula (I) can be prepared by one or more of the following three methods:
- the salt obtained can precipitate and be collected by filtration or can be recovered by evaporation of the solvent.
- the degree of ionization of the salt obtained can vary from completely ionized to almost non-ionized.
- the second subject of the invention relates to a pharmaceutical composition
- a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one compound according to the invention, as described above for its use in causing a cancerous mammalian tumor to regress.
- the pharmaceutical composition further comprises at least one other therapeutic agent.
- this other therapeutic agent is an antineoplastic agent.
- the antineoplastic agent is a DNA damaging agent such as camptothecin, irinotecan, topotecan, amsacrine, etoposide, etoposide phosphate, teniposide, cisplatin, carboplatin, oxaliplatin, cyclophosphamide, chlorambucil, chlormethine, busulfan, treosulfan or thiotepa, an antitumor antibiotic such as daunorubicin, doxorubicin, epirubicin, idarubicin, mitoxantrone, valrubicin, actinomycin D, mitomycin, bleomycin or plicamycin, an antimetabolite such as 5-fluorouracil, cytarabine, fludarabine or methotrexate, an antimitotic such as paclitaxel, docetaxel, vinblastine, vincristine, vindesine or vinore
- the pharmaceutical composition is used in the treatment of cancer in a patient suffering from a tumor which is chemoresistant to said antineoplastic agent when it is not administered in combination with a compound according to the invention .
- the pharmaceutical composition is used in the treatment of cancer in a patient suffering from a tumor which is chemosensitive to said antineoplastic agent, and the dose of the antineoplastic agent administered to said patient in combination with a compound according to the invention or one of its pharmaceutically acceptable salts is lower than the dose of the antineoplastic agent when it is not administered in combination with a compound according to the invention.
- the dose of the antineoplastic agent administered to said patient in combination with a compound according to the invention or one of its pharmaceutically acceptable salts is lower than the dose of the antineoplastic agent administered alone, without any other active ingredient.
- composition according to the invention may also also comprise other active therapeutic compounds commonly used in the treatment of the pathology set out above.
- the pharmaceutical composition of the invention can be administered by any route, in particular by route: intradermal, intramuscular, intraperitoneal, intravenous or subcutaneous, pulmonary, transmucosal (oral, intranasal, intravaginal, rectal ), nasal spray inhalation, using tablet, capsule, solution, powder, gel, particle formulation; and contained in a syringe, an implanted device, an osmotic pump, a cartridge, a micropump; or any other means appreciated by the skilled artisan well known in the art.
- route in particular by route: intradermal, intramuscular, intraperitoneal, intravenous or subcutaneous, pulmonary, transmucosal (oral, intranasal, intravaginal, rectal ), nasal spray inhalation, using tablet, capsule, solution, powder, gel, particle formulation; and contained in a syringe, an implanted device, an osmotic pump, a cartridge, a micropump; or any other means appreciated by the skilled
- Site-specific administration can be performed, for example, intratumoral, intra-articular, intrabronchial, intra-abdominal, intracapsular, intra-cartilaginous, intracavitary, intracerebellar, intracerebroventricular, intracolonic, intracervical, intragastric, intrahepatic, intracardiac , intraosteal, intrapelvic, intrapericardial, intraperitoneal, intrapleural, intraprostatic, intrapulmonary, intrarectal, intrarenal, intraretinal, intraspinal, intrasynovial, intrathoracic, intrauterine, intravascular, intravesical, intralesional, vaginal, rectal, buccal, sublingual, intranasal or transdermal in a suitable dosage comprising the usual non-toxic and pharmaceutically acceptable vehicles.
- the pharmaceutical composition is in a form suitable for being administered intravenously, subcutaneously, intraperitoneally or orally.
- the oral route is particularly preferred.
- the compound of the invention is also effective on humans.
- compositions for the administration of the compounds of this invention may be presented in unit dose form and may be prepared by any of the methods well known in the state of the art. All methods include the step of bringing the active ingredient into association with the carrier which constitutes one or more accessory ingredients.
- pharmaceutical compositions are prepared by bringing the active ingredient into association with a liquid carrier or a finely divided solid carrier or both, and then, if necessary, shaping the product into the desired formulation.
- the active object compound is included in an amount sufficient to produce the desired effect on the disease process or state.
- the pharmaceutical compositions containing the active ingredient may be in a form suitable for oral use, for example in the form of tablets, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsions, capsules, syrups, elixirs, solutions, mouth patches, oral gel, chewing gum, chewable tablets, effervescent powder and effervescent tablets.
- the pharmaceutical compositions containing the active principle can be in the form of an aqueous or oily suspension.
- the aqueous suspensions contain the active materials mixed with excipients suitable for the manufacture of aqueous suspensions.
- excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydroxy-propylmethylcellulose, sodium alginate, polyvinyl-pyrrolidone, gum tragacanth and gum acacia;
- the dispersing or wetting agents may be a natural phosphatide, for example lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of alkylene oxide ethylene with long chain aliphatic alcohols, for example heptadecaethylene-oxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol, such as polyoxyethylene monooleate sorbitol, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene
- the aqueous suspensions may also contain one or more preservatives, for example ethyl, or n-propyl, p-hydroxybenzoate, one or more colorants, one or more flavoring agents, and one or more sweeteners, such as sucrose or saccharin.
- the oily suspensions can be formulated by suspending the active principle in a vegetable oil, for example peanut, olive, sesame or coconut oil, or in a mineral such as liquid paraffin.
- Oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those mentioned above and flavoring agents can be added to obtain a palatable oral preparation. These compositions can be preserved by adding an antioxidant such as ascorbic acid.
- Dispersible powders and granules which are suitable for the preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, a suspending agent and one or more preservatives.
- Syrups and elixirs can be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose. These formulations may also contain emollient, preservative, flavoring and coloring agents.
- the pharmaceutical compositions may be in the form of an aqueous or oleaginous suspension which can be injected in a sterile manner.
- This suspension can be formulated according to the known art using the appropriate dispersing or wetting agents and suspending agents which have been mentioned above.
- the sterile injectable preparation can also be a sterile injectable solution or suspension in a non-toxic diluent or solvent acceptable parenterally, for example a solution in 1,3-butane diol. Acceptable vehicles and solvents that can be used include; water, Ringer's fluid and isotonic sodium chloride solution.
- sterile fixed oils are traditionally used as a solvent or suspending medium. For this purpose, any fixed oil can be used, including synthetic mono- or diglycerides. Also, fatty acids such as oleic acid are used in the preparation of injectables.
- compositions of the present invention can also be administered in the form of suppositories for rectal administration of the drug.
- These compositions can be prepared by mixing the drug with a suitable non-irritating excipient which is solid at room temperature but liquid at the rectal temperature and which will therefore melt in the rectum to release the drug.
- a suitable non-irritating excipient which is solid at room temperature but liquid at the rectal temperature and which will therefore melt in the rectum to release the drug.
- materials include cocoa butter and polyethylene glycols.
- compositions can be administered ocularly by means of solutions or ointments.
- transdermal delivery of the compounds in question can be achieved by means of iontophoretic and other patches.
- creams, ointments, jellies, solutions or suspensions are used for topical use.
- a suitable dosage of the pharmaceutical composition of this invention may generally be from about 0.1 to 50,000 micrograms ( ⁇ g) per kg of body weight. bodily of patient per day, which can be administered in single or multiple doses.
- the dosage level will preferably be from about 1000 to about 40,000 pg/kg per day, depending on many factors such as the severity of the cancer to be treated, the age and relative health of the subject, the route and the form of administration.
- this composition can be supplied in the form of tablets containing 1000 to 100000 micrograms of each of the active ingredients, in particular 1000, 5000, 10000, 15000, 20000, 25000, 50000, 75000, 10,0000 micrograms of each active ingredient.
- This composition can be administered on a 1 to 4 times daily schedule, for example once or twice daily.
- the dosage regimen may be adjusted to provide an optimal therapeutic response.
- the invention also discloses a process for the manufacture of the compound of formula (I).
- the C3 fluorination process includes a Dendrogenin A fluorination step, carried out using a fluorination reagent, for example Diethylaminosulfur trifluoride (DAST) or tetrafluoroborate.
- DAST Diethylaminosulfur trifluoride
- tetrafluoroborate A new method for fluorination of sterols.
- the fluorination reaction with tetrafluoroborate is described in the literature “Org. Let., Vol. 11, No. 21, 2009, 5050-5053, Aminodifluorosulfinium Tetrafluoroborate Salts as Stable and Crystalline Deoxofluorinating Reagents”.
- the process for the synthesis of 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluorodilactate comprises the following steps:
- the white powder obtained is the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluorodilactate.
- the ambient temperature is between 15 and 40°C, for example 25 or 37, preferably 20°C.
- Figure 2 illustrates the results of an MTT cell viability test performed on MCF-7 breast tumor cells in the presence of the compound 5a-hydroxy-6[3-[2-(1H- imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro.
- FIG. 3 Figure 3 illustrates the results of Cholesterol Epoxide Hydrolase (ChEH) activity in MCF-7 cells in the presence of the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl )-ethylamino]-cholestan-3p-fluoro.
- Figure 4 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyl (DX103) in comparison with the compound Dendrogenin A ( DX101).
- Figure 5 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxyl (DX105) in comparison with the compound Dendrogenin A ( DX101).
- FIG. 6 Figure 6 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro (DX111) in comparison with the compound Dendrogenin A ( DX101).
- FIG. 7A illustrates the course of tumor growth and survival rate in mice comparing treatment with DX111 and DX101.
- FIG. 8 Figure 8 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide (DX123) in comparison with the compound Dendrogenin A ( DX101).
- Example 1 Synthesis of the analogous compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-fluoro (named DX111)
- the first step is a synthesis of the compound 3p-fluorocholestane comprising the following steps:
- the mixture was transferred to a separatory funnel and the organic phase was washed twice with NaHCO 3 sat, 2 other times with a saturated NaCl solution and once with water.
- the organic phase was dried over MgSO 4 , filtered and then evaporated, allowing a white powder to be obtained. 6.61 g corresponding to 3p-fluorocholestane was obtained. The final yield of the reaction is 99%.
- the second step consists in synthesizing from 3p-fluoro-cholestane the compound 3p-fluoro-5,6a-Epoxy-cholestane as follows:
- Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 6.90 g of a white powder comprising: 3p-fluoro-5,6a-Epoxy-cholestane (85% of the white powder) and 3p-fluoro-5 ,6p-Epoxy-cholestane (15% white powder). 3p-Fluoro-5,6a-epoxycholestane was used without further purification.
- the third step is to synthesize 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro (DX1 11 in basic form) as follows: [88] 0.80 g of histamine in its basic form (7.2 mmol) was added to a 10 ml butanol solution comprising 1.45 g of the compound 3p-fluoro-5,6a-epoxycholestane (3.6 mmol) with stirring at 130 °C. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
- TLC thin layer chromatography
- Example 2 Preparation of a dilactate salt of the compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-fluoro (DX11 1 in dilactate form):
- the reaction is stopped by adding water and the products were extracted with an AcOEt/H 2 O system.
- the organic phase was dried over MgSC and the organic solvents evaporated under vacuum.
- the cholestan-3-sulphide and cholestan-3-amino derivative products are purified either by column chromatography or by recrystallization.
- the reaction path to get Dendrogenin A analogs are the same steps developed for the synthesis of Dendrogenin A.
- R2O2S will be obtained by oxidation of R2S with oxidizing agents such as m-CPBA or H2O2.
- Dissolve cholesterol add NEt 3 in DCM and add mesyl chloride (MsCI) dropwise in DCM solution at room temperature for 1 h. Stir the reaction for 12 h, then evaporate the organic solvent and crystallize the product with MeOH. The product obtained is a white solid. The product obtained is used to obtain the 3p-sulfide and 3[3-azide derivatives. The product obtained is dissolved in DCM then TMS-SR2 for the 3p-sulfide derivative or TMS-N3 for the 3[3-azide derivative is added to the solution. An addition of BF 3 *Et2O is carried out at ambient temperature. Then, it is stirred for 3 h.
- MsCI mesyl chloride
- the culture medium consists of Dulbecco's Modified Eagle Medium (DMEM, marketed by Westburg under the reference LO BE12-604F), comprising 4.5 g/L glucose with L-Glutamine, to which 10% serum is added. of fetal calf (SVF). Neuro2a cells (murine neuroblastoma) are introduced into this culture medium.
- DMEM Dulbecco's Modified Eagle Medium
- LO BE12-604F fetal calf
- a control is also carried out using the protocol described previously without the treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a-fluoro and 5a -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol.
- Cell survival is quantified by a trypan blue test with automatic counting by the Biorad TC20 device (TC20TM Automated Cell Counter). The trypan blue test is based on the integrity of cell membranes, which is broken in dead cells. Trypan blue stains dead cells blue. The Biorad TC20 cell counting device counts the proportion of blue and non-blue cells, and reports the percentage of cells. The results are shown in Figure 1.
- Figure 1 illustrates the ordinate of the percentage of cell survival compared to the control group.
- Example 6 Effect of 5a-hvdroxy-6B-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-fluoro on the viability of MCF-7 cells [107] A cell viability test was performed on MCF-7 breast tumor cells (Michigan Cancer Foundation-7) overexpressing HER2 (ER(+) cells).
- the MCF-7 cells are in a cell culture medium identical to Example 5 and are seeded in 12-well plates at 50,000 cells per well. 24 hours after seeding, the cells are treated with the solvate vehicle comprising water and ethanol with a 1% ratio of ethanol, 5a-hydroxy- 6p- [2-(1 H-imidazol-4 -yl)-ethylamino]-cholestan-3p-fluoro and 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol at 1, 2.5 or 5 ⁇ M. The cells are observed under an inverted microscope and photographed via the microscope camera at 24 h and 48 h.
- the morphological changes of the cells at 1 ⁇ M are very slight. Only a few white vesicles are observed, reflecting the beginning of the autophagy phenomenon, causing cell death after 24 hours of treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]- cholestan-3-fluoro and 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol. The effects are more marked at 2.5 pM and 5 pM with an increase in the number of dead cells.
- treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol shows greater or equal effect after 24 hours observation and similar after 48 hours observation.
- the medium is aspirated, the cells washed with phosphate buffered saline (PBS) then incubated with MTT (0.5 mg/ml in PBS) for approximately 2 hours.
- the MTT solution is aspirated and then the purple crystals are dissolved in dimethyl sulfoxide (DMSO).
- DMSO dimethyl sulfoxide
- Figure 2 illustrates the ordinate of the percentage of cell viability compared to the control group.
- the control group is made in a similar way to the groups studied without the addition of the molecules studied in this text.
- a dose-dependent decrease in cell viability in MTT is measured for 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro and 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol.
- the viability is close to 0%. This reflects a capacity for destruction of mammary tumor cells by the compound of formula (I).
- Example 7 Effect of 5 ⁇ -hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3B-fluoro on the activity of Cholesterol Epoxide Hydrolase (ChEH) in cells MCF-7
- the compounds 5,6a-epoxycholesterol (5,6a-EC) and 5,6p-epoxycholesterol (5,6p-EC) are oxysterols implicated in the anticancer pharmacology of tamoxifen, a widely used antitumor drug. They are both metabolized to cholestane-3p,5a,6p-triol (CT) by the enzyme cholesterol-5,6-epoxide hydrolase (ChEH), and CT is metabolized by the enzyme HSD11 B2 (1 ip-Hydroxysteroid dehydrogenase 2) to 6-oxo-cholestan-3p,5a-diol (OCDO), a tumor-promoting oncosterone.
- CT cholesterol-5,6-epoxide hydrolase
- MCF-7 cells are in a cell culture medium identical to Example 5 and are seeded in 6-well plates at 150,000 cells per well with 3 wells per treatment condition. 24 h after seeding, the MCF-7 cells are treated with [ 14 C]5,6a-EC (stock solution 1000X: 0.6 mM; 20 pCi/pmol; final concentration 0.6 pM) alone or in combination with Tamoxifen (tam ).
- Tamoxifen is used as a positive control for 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a- fluoro and 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol (1 ⁇ M for all molecules).
- lipid extracts are prepared from the cell pellets by extraction with 100 pL of chloroform, 400 pL of methanol and 300 pL of water. Lipid extracts are analyzed by thin layer chromatography (TLC) using ethyl acetate (EtOAc) as eluent. The analysis is carried out using a plate reader and then by autoradiography. The results are presented in figure 3.
- Example 8 Synthesis of the compound of formula (I) 5a-hvdroxy-66-[2-(1H-imidazol-4-vD-ethylaminol-cholestan-36-methoxyl (named DX103)
- a first step consists in dissolving 4.0 grams (g) of cholesterol (10.3 mmol) in 20 milliliters (ml) of tetrahydrofuran (THF). 0.80 g of NaH (60% in oil, 20.0 mmol) was added and left to react for 30 minutes at 60° C., then 1.8 ml of iodomethane (28.9 mmol) were added. The mixture thus obtained was left at 60° C. overnight, namely about 10 h. After cooling the solution, the reaction was quenched by adding 20 ml of water. The mixture was filtered and the THF evaporated under vacuum. The mixture was transferred to a separating funnel and the aqueous phase was extracted three times with ethyl acetate.
- the second step consists in synthesizing from cholestan-3p-methoxyl the compound 5,6a-epoxy-cholestan-3p-methoxyl as follows:
- the third step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyl (DX103 base form) as follows: 0.81 g of histamine (7.30 mmol) in its basic form was added to a 10 ml butanol solution comprising 1.50 g of the 5,6a-epoxy-cholestan-3p-methoxy compound (3.62 mmol) with stirring. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
- the progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 5,6a-epoxy-cholestan-3p-methoxy.
- TLC thin layer chromatography
- the organic phase was dried over anhydrous MgSC.
- the mixture was purified by column chromatography on a purification automaton.
- the eluent used is an ethyl acetate-methanol mixture in a ratio of 90-10%.
- a white powder of 1.32 g of 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxy was obtained.
- the final yield of the reaction is 69% with a purity greater than 95% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
- Example 9 Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-methoxyl (DX103 dilactate form)
- a dilactate salt of the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxy was prepared as follows:
- the first step is a synthesis of the compound cholestan-3p-ethoxy comprising the following steps:
- the third step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy (DX105 in basic form) as follows:
- the organic phase was dried over anhydrous MgSC.
- the mixture was purified by column chromatography on a purification automaton.
- the eluent used is an ethyl acetate-methanol mixture in a 90-10 ratio.
- a white powder of 0.28 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy was obtained.
- the final yield of the reaction is 44% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
- Example 11 Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-ethoxyl (DX105 in dilactate form)
- a dilactate salt of the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy was prepared as follows:
- Example 12 Synthesis of the compound of formula (I) 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-octanoxyl (named DX115)
- the first step is a synthesis of the cholestan-3p-octanoxyl compound comprising the following steps:
- the second step consists in synthesizing from cholestan-3[3-octanoxyl the compound 5,6a-epoxycholestan-3p-octanoxyl as follows:
- the third step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl (DX1 15 in basic form) as follows:
- the progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 5,6a-epoxy-cholestan-3p-octanoxyl.
- TLC thin layer chromatography
- the organic phase was dried over anhydrous MgSC.
- the mixture was purified by column chromatography on a purification automaton.
- the eluent used is a Ethyl acetate/Methanol mixture in a 95/5 ratio.
- a white powder of 0.74 g of 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl was obtained.
- the final yield of the reaction is 55% with a purity greater than 95% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
- Example 13 Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-octanoxyl (DX1 15 in dilactate form)
- a salt dilactate of the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl was prepared as follows:
- Example 14 Synthesis of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-38-azide (named DX123)
- the first step is the synthesis of the compound 3-mesylcholestane comprising the following steps:
- the second step consists in synthesizing from 3[3-mesyl cholesterol the compound 3p-azide-cholestane as follows:
- reaction was neutralized by adding 100 ml of a 2M NaOH solution.
- the organics were extracted twice with dichloromethane.
- the organic phases were combined and rinsed twice with saturated NaCl solution.
- the organic phase was dried over MgSC, filtered and then evaporated to obtain a solid.
- the reaction crude was purified by column chromatography eluent 100% hexane. A white-yellowish powder of 13.33 g corresponding to 3p-azide-cholestane was thus obtained.
- the final yield of the reaction is 65%.
- the third synthetic step consists in synthesizing from 3p-azoturecholestane the compound 3p-azide-5,6a-epoxycholestane as follows:
- Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 1.35 g of a white powder corresponding to the mixture of: 3-azide-5,6a-epoxycholestane (83% of the total) and 3p-azide- 5,6 -epoxycholestane (17% white powder). The final product was used without further purification.
- the fourth step is the synthesis of 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide (DX123 in neutral form) as follows : [162] 864 mg of histamine in its basic form (7.77 mmol) was added to a 20 ml butanol solution comprising 2.02 g of the compound 3p-azide-5,6a-epoxycholestane at 83% (3.9 mmol) under stirring at 130°C. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
- the progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 3p-azide-5,6a-epoxycholestane.
- TLC thin layer chromatography
- the organic phase was dried over anhydrous MgSC, filtered and then evaporated to obtain a brown oil.
- the mixture was purified by column chromatography on silica gel on a purification automaton comprising a prepacked column of 40 g eluting dichloromethane-ethyl acetate 75-25% up to 0-100%.
- a white powder of 890 mg of 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide was obtained.
- the final reaction yield is 42% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
- Example 15 Preparation of a dilactate salt of the compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-azide (DX123 dilactate form)
- Example 16 Synthesis of a trichloride salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-amino (named DX125, in trichloride form)
- the white powder obtained was dissolved with 20 ml of dichloromethane and transferred to a separatory funnel containing 20 ml of an aqueous solution of HCl (1 ml of 37% HCl in 19 ml of water), the aqueous phase was washed three times with dichloromethane. The aqueous phase was dried under vacuum allowing a white powder to be obtained. The powder was taken up with dichloromethane and filtered one last time to remove the last traces of triphenylphosphine.
- Example 17 Synthesis of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3B-acetamide (named DX127)
- the first synthetic step is the reduction of the azide group to an amine in position 3 of the cholestan-3p-azide derivative.
- the second step consists in synthesizing from cholestan-3-amine the compound cholestan-3-acetamide as follows:
- the third step is to synthesize 5,6-epoxy-cholestan-3[3-acetamide as follows:
- Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 1.65 g of a white powder comprising: 5.6a-Epoxy-cholest-3p-acetamide (60% of the white powder) and 5.6 -Epoxy-cholest-3p-acetamide (40% white powder). 5,6a-Epoxy-cholest-3p-acetamide was used without further purification.
- the fourth step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide (DX127 in neutral form) as follows:
- the organic phase was washed twice with 20 ml of water and three times with 20 ml of a saturated NaCl solution.
- the organic phase was dried over anhydrous MgSO 4 .
- the mixture was purified by column chromatography on a purification automaton.
- the eluent used is a dichloromethane-methanol-ammonia mixture in a ratio of 75-20-5%.
- a white powder of 0.37 g of 5 ⁇ -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide was obtained.
- the final reaction yield is 30% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
- Example 18 Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-acetamide (DX127 in dilactate form)
- a dilactate salt of the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide was prepared as follows:
- the first step consists in synthesizing from 3p-mesylcholesterol the compound 3p-methylthio-cholestane as follows: ,
- reaction was neutralized by adding 100 ml of a 2M NaOH solution.
- the organic phase was extracted twice with dichloromethane.
- the organic phases were combined and rinsed twice with saturated NaCl solution.
- the organic phase was dried over MgSC, filtered and then evaporated allowing obtaining a solid.
- the reaction crude was purified by column chromatography on silica gel eluting with 100% hexane. A white powder of 6.04 g corresponding to 3p-methylthio-cholestane was thus obtained.
- the final yield of the reaction is 63%.
- the second synthetic step consists in synthesizing from 3
- Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 2.10 g of a white powder.
- the reaction crude was purified by column chromatography, eluent initial 100% hexane and then mixtures of hexane and AcOEt.
- the desired product was purified by column chromatography on silica gel with the eluent hexanes-AcOEt 55-45% v .
- a white powder of 380 mg corresponding to 3-methylthio-5,6epoxy-cholestane was thus obtained.
- the final yield of the reaction is 12%.
- the third step is the synthesis of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methylsulfonyl (DX129 in basic form) as next :
- the organic phase was dried over anhydrous MgSC, filtered and then evaporated to obtain a brown oil.
- the reaction crude was purified by chromatographic column eluent initial AcOEt 100%, then AcOEt-MeOH mixtures.
- the desired product was purified with AcOEt-MeOH 75-25%.
- a yellow powder of 190 mg corresponding to 5 ⁇ -hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-methylsulfonyl is obtained.
- the product is purified a second time by chromatographic column to have a purity greater than 97
- Example 20 Preparation of a dilactate salt of the compound 5a-hydroxy-6(3-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3(3-methylsulfonyl) (DX129 in dilactate form )
- DX105 shows equivalent bioavailability (even slightly higher) than DX101. On the other hand, it presents a much faster absorption and a much higher maximum concentration, which makes it possible to claim a good prospect in vivo. [21 1]
- Example 23 Pharmacokinetic study of DX1 11
- Example 24 Pharmacokinetic study of DX123 [215] The following study is an LC/MS assay in plasma of the various molecules over 3 days (11 measurement points in the end). The graphs are always presented in comparison with the DX101 which is the reference.
- Example 25 Study of the cytotoxicity of the DX101 analogues according to the invention on 4T 1 cells [219] Cell viability assays were performed on 4T1 murine mammary tumor cells characterized as triple negative (HER2-, ER-, PR-).
- the culture medium consists of Dulbecco's Modified Eagle Medium (DMEM, marketed by Westburg under the reference LO BE12-604F), comprising 4.5 g/L glucose with L-Glutamine, to which 10% serum is added. of fetal calf (FCS) and 50 U/ml of penicillin/streptomycin.
- DMEM Dulbecco's Modified Eagle Medium
- FCS fetal calf
- 96-well dishes were seeded with 2000 4T 1 cells per well. After 72 hours (h) of culture under normal conditions, i.e. in an incubator at a temperature of 37°C at 5% bone, we treat the 4T1 cells for 48 hours with DX101, DX103, DX11 1, DX123, DX125, DX127 and DX129 at 100 nM, 1 pM, 2.5 pM and 10 pM.
- a control condition (CTL) is also carried out in parallel using the protocol described previously without treatment with the molecules DX101, DX103, DX11 1 , DX123, DX125, DX127 or DX129.
- MTT labeling is carried out at 48 hours. This test is based on the use of the tetrazolium salt MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide). Tetrazolium is reduced by active living cell mitochondrial succinate dehydrogenase to formazan, a violet-colored precipitate. The quantity of precipitate formed is proportional to the quantity of living cells but also to the metabolic activity of each cell. Thus, a simple assay of the optical density at 550 nm by spectroscopy makes it possible to know the relative quantity of living and metabolically active cells.
- the medium is aspirated, and the cells are incubated with MTT (0.5 mg/ml in culture medium) for about 3 hours.
- MTT 0.5 mg/ml in culture medium
- the MTT solution is aspirated and the purple crystals are dissolved in dimethyl sulfoxide (DMSO).
- DMSO dimethyl sulfoxide
- the OD optical density
- the percentage of viability is then determined in each well compared to the CTL and the IC 5o (concentration for which 50% of living cells remain) is determined for each molecule with the Prism software using a line of nonlinear regression ( og(inhibitor) vs. Response).
- the percentage of viability is determined using the assay of the activity of the enzyme LDH (lactate dehydrogenase) in the cell supernatants using the non-radioactive cytotoxicity assay kit k/t (Promega).
- LDH lactate dehydrogenase
- LDH is an enzyme released in the supernatant of dead cells. The higher the LDH activity in the supernatant, the greater the cell death.
- the released LDH converts a purple tetrazolium salt to red-colored formazan, absorbing at 490 nm. The intensity of the red color is proportional to the number of dead cells.
- the supernatants are transferred to a new 96-well plate and are incubated for 30 minutes in the presence of the substrate mix at room temperature.
- the reaction is stopped using the stop stolution reagent and the absorbance is determined at 490 nM.
- the percentage of cell death is determined here using a 100% maximum LDH activity control (made from untreated cells incubated in the presence of the lysis solution for 45 minutes at 37°C just before adding of the substrate mix), and the cell viability in each well is then deduced from this percentage.
- the IC 5 o is then determined as explained in the previous paragraph.
- the percentage of viability is determined using the CelITox Green Cytotoxicity Assay kit (Promega). This test measures cell death via a change in membrane integrity. This test uses a cyanine-type probe which does not penetrate cells when they are alive, but which binds to the DNA of dead cells which are permeable to the probe, causing it to fluoresce. Accordingly, the higher the fluorescence in the wells, the greater the cell death. After 48 hours of treatment, the cells are incubated for a minimum of 15 minutes in the presence of Celltox green reagent at room temperature and the fluorescence is read at ⁇ emission 485 nm/ ⁇ eX citation 590 nm.
- the percentage of cell death is determined using the 100% cell death control (made from untreated cells incubated in the presence of the lysis solution for 30 minutes at 37°C before adding the Celltox green reagent), and the cell viability in each well is then deducted from this percentage.
- the IC 5 O is then determined as explained above.
- n D represents the number of independent tests with 4 to 10 replicates for each condition.
- Example 26 Study of the cytotoxicity of DX101 analogues according to the invention on BT-474 cells
- BT-474 human mammary tumor cells characterized as being triple positive HER2+, ER+, PR+.
- the BT-474 cells are in a cell culture medium identical to the previous example and are seeded in 24-well plates at 70,000 cells per well, for the determination of cell viability using Trypan blue, or in 96-well plates at 13,000 cells per well for determining cell viability using the MTT or LDH assay.
- the trypan blue test is based on the integrity of cell membranes, which is broken in dead cells. Trypan blue stains dead cells blue.
- the Biorad TC20 cell counting device counts the proportion of blue and non-blue cells, and reports the percentage of cells. The percentage of viability is then determined in each well with respect to the untreated cells and the IC 50 is determined as explained in the preceding example. The results are shown in Table 2. Also, the percentage viability of BT-474 cells was determined using the MTT and LDH assay, performed as described in the previous example.
- n D represents the number of independent tests with 3 to 10 replicates for each condition.
- Example 27 Effect of the analog compound DX111 on tumor growth in vivo
- All animal procedures were conducted according to the guidelines of our institution after being approved by the ethics committee.
- the 4T1 cells were cultured as before, dissociated in trypsin, washed twice in cold PBS and resuspended in 1.5 million/ml PBS.
- 4T1 tumors were obtained by subcutaneous transplantation of 0.150 million cells in 100 ⁇ L into the flank of female Balb/c mice (9 weeks, January). When the tumors reached a volume of 50-100 mm 3 , the mice were force-fed with 40 mg/kg of DX101 or 40 mg/kg of DX11 1 or of the control vehicle (water).
- the treatment was carried out every day until the end of the experiment (tumor volume > 1000 mm 3 ).
- the tumor volume was determined daily using a caliper and calculated using the formula: 1 /z X (Length * Width 2 ).
- the percentage of tumor growth inhibition was determined according to the following formula: 100 X (1 - (Tumor volume, day 7/ tumor volume day 0) D xm) / (1 - (tumor volume, day 7/ tumor volume day 0) vehicle).
- Example 28 Study to determine the pharmacokinetics and bioavailability of DX11 1 orally in rats.
- the results show that the analog compound DX111 has a bioavailability 3 times greater than the reference compound DX101 by reducing the elimination half-life time.
- the maximum plasma concentration obtained with DX111 is 4 times higher than that of DX101 and clearance is halved.
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Abstract
The present invention relates to a novel compound of general formula (I), and/or a pharmaceutically acceptable salt of such a compound, a pharmaceutical composition comprising at least said compound, for use as a drug for shrinking cancerous tumours in mammals.
Description
ANALOGUES DU 5 ALPHA-HYDROXY-6 BETA-[2-(1-H-IMIDAZOL-4-YL)ETHYLAMINO]-CHOLESTAN-3 BETA-OL ET COMPOSITIONS PHARMACEUTIQUES LE COMPRENANT POUR UTILISATION DANS LE TRAITEMENT DU CANCER ANALOGS OF 5 ALPHA-HYDROXY-6 BETA-[2-(1-H-IMIDAZOL-4-YL)ETHYLAMINO]-CHOLESTAN-3 BETA-OL AND PHARMACEUTICAL COMPOSITIONS COMPRISING THEM FOR USE IN THE TREATMENT OF CANCER
Domaine technique Technical area
[1] L’invention se rapporte au domaine des composés stérols et plus particulièrement à des analogues du composé 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-ol et compositions pharmaceutiques les comprenant pour leur utilisation dans le traitement du cancer. [1] The invention relates to the field of sterol compounds and more particularly to analogues of the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol and pharmaceutical compositions comprising them for their use in the treatment of cancer.
Arrière-plan technologique Technology background
[2] Le terme « cancer » ou « tumeur cancéreuse » englobe un groupe de maladies se caractérisant par la multiplication et la propagation anarchiques de cellules anormales. Si les cellules cancéreuses ne sont pas éliminées, l’évolution de la maladie va mener plus ou moins rapidement au décès de la personne touchée. [2] The term "cancer" or "cancerous tumor" encompasses a group of diseases characterized by the uncontrolled growth and spread of abnormal cells. If the cancer cells are not eliminated, the evolution of the disease will more or less quickly lead to the death of the affected person.
[3] La prise en charge du cancer implique la chirurgie, la radiothérapie et la chimiothérapie, qui peuvent être utilisées seules ou en association, simultanément ou séquentiellement. La chimiothérapie utilise des agents antinéoplasiques qui sont des médicaments qui empêchent ou inhibent la maturation et la prolifération des néoplasmes. Les agents antinéoplasiques agissent en ciblant efficacement les cellules à division rapide. Comme les agents antinéoplasiques affectent la division cellulaire, les tumeurs avec un fort taux de croissance (telles que la leucémie myéloïde aiguë et les lymphomes agressifs, y compris la maladie de Hodgkin) sont plus sensibles à la chimiothérapie, car une plus grande proportion des cellules ciblées subit une division cellulaire à tout moment. Les tumeurs malignes avec des taux de croissance plus lents, comme les lymphomes indolents, ont tendance à répondre beaucoup plus modestement à la chimiothérapie. Cependant, le développement de la chimiorésistance est un problème persistant pendant le traitement de chimiothérapie. Par exemple, le traitement conventionnel de la leucémie myéloïde aiguë (LMA) comprend l'administration combinée de cytarabine avec une anthracycline, telle que la daunorubicine. Le taux de survie globale à 5 ans est de 40 % chez les jeunes adultes et d'environ 10 % chez les patients âgés. Les taux de réponse varient considérablement avec le vieillissement, de 40 % à 55 % chez les patients de plus de 60 ans et de 24 % à 33 % chez les patients de plus de 70 ans. Ceci est encore pire pour les personnes âgées avec des profils cytogénétiques défavorables et le décès dans les 30 jours suivant le traitement varie de 10 % à 50 % avec l'âge et l'aggravation. Par ailleurs, la restriction de l'utilisation de ces molécules est due également à des effets
secondaires, et en particulier à l'émergence d'une toxicité cardiaque chronique (liée aux anthracyclines). Le taux de mortalité toxique liée à la chimiothérapie intensive est de 10 à 20 % chez les patients de plus de 60 ans. [3] Cancer management involves surgery, radiotherapy and chemotherapy, which can be used alone or in combination, simultaneously or sequentially. Chemotherapy uses antineoplastic agents which are drugs that prevent or inhibit the maturation and proliferation of neoplasms. Antineoplastic agents work by effectively targeting rapidly dividing cells. Because antineoplastic agents affect cell division, tumors with a high growth rate (such as acute myeloid leukemia and aggressive lymphomas, including Hodgkin's disease) are more susceptible to chemotherapy because a greater proportion of cells targets undergo cell division at any time. Malignant tumors with slower growth rates, such as indolent lymphomas, tend to respond much more modestly to chemotherapy. However, the development of drug resistance is a persistent problem during chemotherapy treatment. For example, conventional treatment for acute myeloid leukemia (AML) includes the combined administration of cytarabine with an anthracycline, such as daunorubicin. The overall 5-year survival rate is 40% in young adults and about 10% in elderly patients. Response rates vary considerably with aging, from 40% to 55% in patients over 60 and from 24% to 33% in patients over 70. This is even worse for the elderly with unfavorable cytogenetic profiles and death within 30 days of treatment ranges from 10% to 50% with age and worsening. Moreover, the restriction of the use of these molecules is also due to effects secondary, and in particular the emergence of chronic cardiac toxicity (linked to anthracyclines). The toxic mortality rate linked to intensive chemotherapy is 10 to 20% in patients over 60 years of age.
[4] Avec ce profil bénéfice-risque du régime conventionnel, seulement 30 % des personnes âgées avec une LMA nouvellement diagnostiquée reçoivent une chimiothérapie antinéoplasique. [4] With this benefit-risk profile of the conventional regimen, only 30% of older people with newly diagnosed AML receive antineoplastic chemotherapy.
[5] Au cours des dernières décennies, il n'y a eu qu'une amélioration modeste des résultats pour les patients plus jeunes atteints de LMA, mais aucune pour les adultes de plus de 60 ans (la plupart des patients atteints de LMA). [5] In recent decades, there has been only a modest improvement in outcomes for younger AML patients, but none for adults over 60 (most AML patients) .
[6] Il existe donc un réel besoin de développer des molécules utiles dans le traitement de ces tumeurs cancéreuses qui présentent des problèmes de chimiorésistance et de toxicité intrinsèque des médicaments antinéoplasiques. Les données précitées soulignent la nécessité de trouver de nouvelles approches qui combinent à la fois une réduction des schémas posologiques d'agents antinéoplasiques pour le traitement des tumeurs chimiosensibles à une diminution de la résistance des tumeurs chimiorésistantes à l'agent antinéoplasique. [6] There is therefore a real need to develop molecules useful in the treatment of these cancerous tumors which present problems of chemoresistance and intrinsic toxicity of antineoplastic drugs. The aforementioned data underline the need to find new approaches which combine both a reduction in the dosage regimens of antineoplastic agents for the treatment of chemosensitive tumors with a reduction in the resistance of chemoresistant tumors to the antineoplastic agent.
[7] On connaît du document EP3272350B1 le composé 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-ol, connu sous le nom de Dendrogénine A, et nommé ci-après DX101 , utile pour le traitement des tumeurs chimiorésistantes. La Dendrogénine A est capable de restaurer la sensibilité des tumeurs chimiorésistantes à un agent antinéoplasique ou d'augmenter les effets des agents antinéoplasiques sur les tumeurs, ce qui permet à son tour de réduire la dose cytotoxique efficace d'agents antinéoplasiques contre les tumeurs chimiosensibles. [7] We know from document EP3272350B1 the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol, known under the name of Dendrogenin A, and named here -after DX101, useful for the treatment of chemoresistant tumours. Dendrogenin A is able to restore the sensitivity of chemoresistant tumors to an antineoplastic agent or to increase the effects of antineoplastic agents on tumors, which in turn makes it possible to reduce the effective cytotoxic dose of antineoplastic agents against chemosensitive tumors.
[8] Le document de De Medina et al. (Biochimie, 2021 , 95(3), 482-488, XP028982107, Technical note: Hapten synthesis, antibody production and development of an enzyme- linked immunosorbent assay for detection of the natural steroidal alkaloid Dendrogenin A) décrit des dérivés de Dendrogénine A pour lesquels l’alcool en position 3p est fonctionnalisé pour leur utilisation comme haptènes pour la production d’anticorps. [8] The document by De Medina et al. (Biochimie, 2021 , 95(3), 482-488, XP028982107, Technical note: Hapten synthesis, antibody production and development of an enzyme-linked immunosorbent assay for detection of the natural steroidal alkaloid Dendrogenin A) describes derivatives of Dendrogenin A for which the alcohol at position 3p is functionalized for their use as haptens for the production of antibodies.
[9] Le document de De Medina et al. (J. Med. Chem., 2009, 52(23), 7765-77, XP9131948, Synthesis of new alkylaminooxysterols with potent cell differentiating activities: identification of leads for the treatment of cancer and neurodegenerative diseases) décrit des dérivés de Dendrogénine A pour lesquels l’alcool en position 3p est éventuellement fonctionnalisé par un radical méthanoate ou propanoate, pour le traitement du cancer.
[10] L’objet de la présente invention est de fournir de nouveaux composés et analogues au composé Dendrogénine A, utiles pour traiter les tumeurs cancéreuses, notamment les tumeurs chimiosensibles et/ou chimiorésistantes. [9] The document by De Medina et al. (J. Med. Chem., 2009, 52(23), 7765-77, XP9131948, Synthesis of new alkylaminooxysterols with potent cell differentiating activities: identification of leads for the treatment of cancer and neurodegenerative diseases) describes Dendrogenin A derivatives for which the alcohol in the 3p position is optionally functionalized with a methanoate or propanoate radical, for the treatment of cancer. [10] The object of the present invention is to provide new compounds and analogues of the compound Dendrogenin A, which are useful for treating cancerous tumours, in particular chemosensitive and/or chemoresistant tumours.
[11 ] De manière surprenante, les inventeurs ont découvert que des analogues spécifiques du composé Dendrogénine A (nommé également DX101 ), présentent une activité pharmacologique comparable à la Dendrogénine A. [11 ] Surprisingly, the inventors have discovered that specific analogues of the compound Dendrogenin A (also called DX101) exhibit pharmacological activity comparable to Dendrogenin A.
Résumé Summary
L’invention a pour premier objet un composé de formule (I) ;
ou un sel pharmaceutiquement acceptable d’un tel composé, dans lequel : The first subject of the invention is a compound of formula (I); or a pharmaceutically acceptable salt of such a compound, in which:
Ri est choisi parmi F, N3, OCnH2n+i, NR2R3, SR2, SO2R2 , avec n < 8, R2 et R3 sont indépendamment choisis parmi : H, un groupement alkyle en C1 à C8, saturé ou insaturé, contenant éventuellement un ou plusieurs substituants choisis parmi des groupes allyle, carbonyle, arène et hétérocyclique, pour son utilisation en tant que médicament, et plus particulièrement en tant que médicament pour faire régresser une tumeur cancéreuse de mammifère. Ri is chosen from F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO2R2 , with n < 8, R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, optionally containing one or more substituents chosen from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament, and more particularly as a medicament for regressing a mammalian cancerous tumor.
[12] L’invention a pour second objet une composition pharmaceutique comprenant dans un véhicule pharmaceutiquement acceptable, au moins un composé de formule (I) pour son utilisation pour faire régresser une tumeur cancéreuse de mammifère. [12] A second subject of the invention is a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one compound of formula (I) for its use in regressing a cancerous tumor of a mammal.
Définitions Definitions
[13] Dans cette description, à moins qu’il n’en soit spécifié autrement, il est entendu que, lorsqu’un intervalle est donné, il inclut les bornes supérieures et inférieures dudit intervalle. [13] In this description, unless otherwise specified, it is understood that, when an interval is given, it includes the upper and lower limits of said interval.
[14] Dans la présente invention, tout au long de la présente description et des revendications annexées, les termes suivants, sauf indication contraire, doivent être compris comme ayant la signification suivante : [14] In the present invention, throughout this specification and the appended claims, the following terms, unless otherwise indicated, shall be understood to have the following meaning:
[15] Le terme « solvate » est utilisé ici pour décrire un complexe moléculaire comprenant un composé de l’invention et contenant des quantités stoechiométriques ou sous-
stœchiométriques d’une ou plusieurs molécules de solvant pharmaceutiquement acceptable telles que l’éthanol. Le terme « hydrate » fait référence lorsque ledit solvant est de l’eau. [15] The term "solvate" is used herein to describe a molecular complex comprising a compound of the invention and containing stoichiometric or sub- stoichiometric values of one or more pharmaceutically acceptable solvent molecules such as ethanol. The term “hydrate” refers when said solvent is water.
[16] Le terme « humain » fait référence à un sujet des deux sexes et à tout stade de développement (c’est-à-dire un nouveau-né, nourrisson, juvénile, adolescent, adulte). [16] The term “human” refers to a subject of either sex and any stage of development (i.e. newborn, infant, juvenile, adolescent, adult).
[17] Le terme « patient » fait référence à un animal à sang chaud, plus préférablement un humain, qui attend la réception ou qui reçoit des soins médicaux et/ou qui sera l’objet d’un acte médical. [17] The term “patient” refers to a warm-blooded animal, more preferably a human, who is awaiting reception or receiving medical treatment and/or who will be the subject of a medical procedure.
[18] Par « pharmaceutiquement acceptable » il est entendu que les ingrédients d’un produit pharmaceutiquement acceptable sont compatibles les uns avec les autres et ne sont pas nuisibles pour le patient de ce produit. [18] By “pharmaceutically acceptable” it is understood that the ingredients of a pharmaceutically acceptable product are compatible with each other and are not harmful to the patient of this product.
[19] Le terme « véhicule pharmaceutique » tel qu’utilisé dans ce texte signifie un support ou un milieu inerte utilisé comme solvant ou diluant dans lequel l’agent pharmaceutiquement actif est formulé et / ou administré. Des exemples non limitatifs de véhicules pharmaceutique comprennent les crèmes, les gels, les lotions, les solutions et les liposomes. [19] The term “pharmaceutical vehicle” as used in this text means an inert carrier or medium used as a solvent or diluent in which the pharmaceutically active agent is formulated and/or administered. Non-limiting examples of pharmaceutical carriers include creams, gels, lotions, solutions and liposomes.
[20] Le terme « administration », signifie délivrer, l’agent actif ou l’ingrédient actif (par exemple le composé de formule (I), dans une composition pharmaceutiquement acceptable, au patient dans lequel une condition, un symptôme et/ou une maladie doit être traitée. [20] The term "administration" means to deliver, the active agent or active ingredient (e.g. the compound of formula (I), in a pharmaceutically acceptable composition, to the patient in which a condition, symptom and/or a disease must be treated.
[21 ] Les termes « traiter » et « traitement » tels qu’utilisés ici incluent atténuer, apaiser, stopper, soigner une condition, un symptôme et/ou une maladie. [21 ] The terms "treat" and "treatment" as used herein include alleviating, alleviating, stopping, curing a condition, symptom and/or disease.
[22] Le terme « analogue » tels qu’utilisés ici signifie un composé ayant une structure chimique similaire à un autre composé de référence, mais différant de celui-ci par un certain composant. Il peut différer d’un ou de plusieurs atomes, groupes fonctionnels, sous-structures, qui sont remplacés par d’autres atomes, groupes fonctionnels ou sous- structures. Les analogues peuvent avoir des propriétés physiques, chimiques, biochimiques ou pharmacologiques différentes. Dans la présente invention, les composés analogues sont en référence au composé Dendrogénine A. Ces analogues présentent des propriétés pharmacologiques identiques ou similaire par rapport au composé de référence. [22] The term “analog” as used herein means a compound having a similar chemical structure to another reference compound, but differing from it in some component. It may differ by one or more atoms, functional groups, substructures, which are replaced by other atoms, functional groups or substructures. Analogs may have different physical, chemical, biochemical or pharmacological properties. In the present invention, the analogous compounds refer to the compound Dendrogenin A. These analogs have identical or similar pharmacological properties with respect to the reference compound.
[23] Par "cancer chimiorésistant", on entend un cancer chez un patient où la prolifération des cellules cancéreuses ne peut être empêchée ou inhibée au moyen d'un agent antinéoplasique ou d'une combinaison d'agents antinéoplasiques habituellement utilisés pour traiter ce cancer, à une dose acceptable pour le patient. Les tumeurs peuvent être
intrinsèquement résistantes avant la chimiothérapie, ou une résistance peut être acquise pendant le traitement par des tumeurs initialement sensibles à la chimiothérapie. [23] By "chemoresistant cancer" we mean a cancer in a patient where the proliferation of cancerous cells cannot be prevented or inhibited by means of an antineoplastic agent or a combination of antineoplastic agents usually used to treat this cancer , at a dose acceptable to the patient. Tumors can be intrinsically resistant prior to chemotherapy, or resistance may be acquired during treatment by tumors initially sensitive to chemotherapy.
[24] Par "cancer chimiosensible", on entend un cancer chez un patient qui répond aux effets d'un agent antinéoplasique, c'est-à-dire que la prolifération des cellules cancéreuses peut être empêchée au moyen dudit agent antinéoplasique à une dose acceptable pour le patient. [24] By "chemosensitive cancer" is meant a cancer in a patient which responds to the effects of an antineoplastic agent, i.e. the proliferation of cancer cells can be prevented by means of said antineoplastic agent at a dose acceptable to the patient.
[25] Le composé de formule (I) appartient au groupe des stéroïdes. La numérotation des atomes de carbone du composé de formule (I) suit donc la nomenclature définie par l’IUPAC dans Pure & AppL Chem., Vol.61 , No.10, pp.1783-1822,1989. La numérotation des atomes de carbone d’un composé appartenant au groupe des stéroïdes selon l’IUPAC est illustrée ci-dessous :
[25] The compound of formula (I) belongs to the group of steroids. The numbering of the carbon atoms of the compound of formula (I) therefore follows the nomenclature defined by the IUPAC in Pure & AppL Chem., Vol.61, No.10, pp.1783-1822,1989. The numbering of the carbon atoms of a compound belonging to the group of steroids according to IUPAC is shown below:
[26] Dans la présente invention, les abréviations suivantes signifient : [26] In the present invention, the following abbreviations mean:
LMA : leucémie myéloïde aiguë ; AML: acute myeloid leukemia;
Dendrogénine A : 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-ol ;Dendrogenin A: 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol;
MCF-7 : Michigan Cancer Foundation-7; MCF-7: Michigan Cancer Foundation-7;
DMEM : Dulbecco's Modified Eagle Medium ; DMEM: Dulbecco's Modified Eagle Medium;
SVF : sérum de veau foetal ; FCS: fetal calf serum;
Ch EH : Cholestérol Epoxyde Hydrolase Ch EH: Cholesterol Epoxide Hydrolase
Neuro2a : neuroblastome murin ; Neuro2a: murine neuroblastoma;
CTL : Contrôle ; CTL: Control;
MTT : bromure de 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tétrazolium ; MTT: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide;
PBS : tampon phosphate salin ; PBS: phosphate buffered saline;
DMSO : diméthylsulfoxyde ; DMSO: dimethyl sulfoxide;
DO : densité optique ou absorbance ; OD: optical density or absorbance;
CT : cholestane-3p,5a,6p-triol ; CT: cholestane-3p,5a,6p-triol;
OCDO : 6-oxo-cholestan-3p,5a-diol ; OCDO: 6-oxo-cholestan-3p,5a-diol;
5,6a-EC : 5,6a-epoxycholesterol ;
Tam : Tamoxifène ; 5,6a-EC: 5,6a-epoxycholesterol; Tam: Tamoxifen;
CCM : chromatographie sur couche mince. TLC: thin layer chromatography.
P.O. : per os P.O.: per os
LC/MS : chromatographie liquide/ spectrométrie de masse LC/MS: liquid chromatography/mass spectrometry
Description des modes de réalisation Description of embodiments
[27] L’invention concerne en premier objet un composé de formule (I) ;
ou un sel pharmaceutiquement acceptable d’un tel composé, dans lequel : [27] The invention relates firstly to a compound of formula (I); or a pharmaceutically acceptable salt of such a compound, in which:
Ri est choisi parmi F, N3, OCnH2n+i, NR2R3, SR2, SO2R2, avec n < 8, R2 et R3 sont indépendamment choisis parmi : H, un groupement alkyle en C1 à C8, saturé ou insaturé, contenant éventuellement un ou plusieurs substituants choisis parmi des groupes allyle, carbonyle, arène et hétérocyclique, pour son utilisation en tant que médicament. Ri is chosen from F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO2R2, with n < 8, R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, optionally containing one or more substituents selected from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament.
Selon un mode de réalisation, l’invention concerne un composé de formule (I) ;
ou un sel pharmaceutiquement acceptable d’un tel composé, dans lequel : According to one embodiment, the invention relates to a compound of formula (I); or a pharmaceutically acceptable salt of such a compound, in which:
Ri est choisi parmi F, N3, OCnH2n+i, NR2R3, SR2, SO2R2 , avec n < 8, Ri is chosen from F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO 2 R 2 , with n < 8,
R2 et R3 sont indépendamment choisis parmi : H, un groupement alkyle en C1 à C8, saturé ou insaturé, contenant éventuellement un ou plusieurs substituants choisis parmi des groupes allyle, carbonyle, arène et hétérocyclique,
pour son utilisation en tant que médicament pour faire régresser une tumeur cancéreuse de mammifère. R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, optionally containing one or more substituents chosen from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament for regressing a mammalian cancerous tumor.
[28] Dans la présente invention : [28] In the present invention:
- le groupe carbonyle fait référence à tous les groupes fonctionnels contenant le groupe oxo (un atome d'oxygène doublement lié (=0) à un atome de carbone) et peut être choisi parmi les aldéhydes, les cétones, l’acide carboxylique, les esters, les amides et/ou l’anhydride. - the carbonyl group refers to all functional groups containing the oxo group (an oxygen atom doubly bonded (=0) to a carbon atom) and can be chosen from aldehydes, ketones, carboxylic acid, esters, amides and/or anhydride.
- le terme « allyle » fait référence à un groupe fonctionnel alcénique de formule semi- développée H2C=CH-CH2-. - the term “allyl” refers to an alkene functional group of semi-developed formula H 2 C=CH-CH 2 -.
- le terme sulfonyle est un composé chimique où l’atome de soufre est combiné à deux atomes d'oxygène doublement liés (=0) et à son radical. - the term sulfonyl is a chemical compound where the sulfur atom is combined with two doubly bonded oxygen atoms (=0) and its radical.
- le terme « arène » fait référence à tous les hydrocarbures aromatiques monocycliques et polycycliques - the term “arene” refers to all monocyclic and polycyclic aromatic hydrocarbons
- le terme « hétérocyclique » fait référence à des composés aromatiques monocycliques et polycycliques comportant comme éléments cycliques un ou plusieurs hétéroatomes parmi O, S et/ou N. - the term “heterocyclic” refers to monocyclic and polycyclic aromatic compounds comprising as cyclic elements one or more heteroatoms from among O, S and/or N.
Dans la définition du composé de formule (I) selon l’invention, le radical du carbone 3 peut être en position a ou p. La position p étant un mode de réalisation préféré. In the definition of the compound of formula (I) according to the invention, the radical of carbon 3 can be in position a or p. The p position being a preferred embodiment.
[29] Selon un mode de réalisation, le composé de formule (I) est un analogue O-aminé dans lequel le radical Ri = NR2R3 avec R2 étant H ou COCnH2n+i et R3 = H. [29] According to one embodiment, the compound of formula (I) is an O-amino analogue in which the radical Ri = NR 2 R 3 with R 2 being H or COC n H 2n+i and R 3 = H.
[30] Dans ce mode de réalisation, le composé de formule (I) est plus particulièrement le 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)-éthylamino]-3p-acétamide (nommé DX127). [30] In this embodiment, the compound of formula (I) is more particularly 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-3p-acetamide (named DX127) .
[31] Dans ce mode de réalisation, le composé de formule (I) est plus particulièrement le 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)-éthylamino]-3p-amino (nommé DX125). [31] In this embodiment, the compound of formula (I) is more particularly 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-3p-amino (named DX125) .
[32] Dans ce mode de réalisation, le composé de formule (I) est plus particulièrement le 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)-éthylamino]-3p-azoture (nommé DX123). [32] In this embodiment, the compound of formula (I) is more particularly 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-3p-azide (named DX123) .
[33] Selon encore un mode de réalisation, le composé de formule (I) est le 5a-hydroxy-6 - [2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro (nommé DX111 ). [33] According to yet another embodiment, the compound of formula (I) is 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro (named DX111 ).
[34] Selon encore un autre mode de réalisation, le composé de formule (I) est un analogue O-alkylé et présente un radical Ri = OCnH2n+i avec n < 8, et est choisi parmi : [34] According to yet another embodiment, the compound of formula (I) is an O-alkyl analogue and has a radical Ri = OC n H 2n+i with n < 8, and is chosen from:
5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-méthoxyle (nommé DX103)
5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-éthoxyle (nommé5a-Hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyl (named DX103) 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy (named
DX105) DX105)
5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-octanoxyle (nommé DX115) 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl (named DX115)
[35] De manière plus préférentielle encore, le composé de formule (I) est un analogue O- alkylé tel que 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p- méthoxyle (DX103) et 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p- éthoxyle (DX105). [35] Even more preferably, the compound of formula (I) is an O-alkyl analogue such as 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p - methoxyl (DX103) and 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxyl (DX105).
[36] Selon un mode de réalisation supplémentaire, le composé de formule (I) est un analogue soufré et présente un radical Ri = SO2R2 avec R2 étant H ou OCnH2n+i, avec n < 8. [36] According to an additional embodiment, the compound of formula (I) is a sulfur analogue and has a radical Ri = SO2R2 with R2 being H or OC n H 2n+ i, with n < 8.
[37] Dans ce mode de réalisation, le composé de formule (I) est préférentiellement le 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3 -méthylsulfonyle (nommé DX129). [37] In this embodiment, the compound of formula (I) is preferably 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-methylsulfonyl (named DX129 ).
[38] Selon un mode de réalisation, le composé de formule (I) est destiné à être utilisé dans le traitement du cancer du sein, de la prostate, colorectal, du poumon, de la vessie, de la peau, de l’utérus, du col de l’utérus, de la bouche, du cerveau, de l’estomac, du foie, de la gorge, du larynx, de l'œsophage, de l'os, de l'ovaire, du pancréas, du rein, de la rétine, du sinus, des fosses nasales, du testicule, de la tyroïde, de la vulve, le traitement du lymphome, lymphomes non hodgkiniens, lymphomes hodgkiniens, de la leucémie, la leucémie myéloïde aiguë ou la leucémie lymphocytaire aiguë, le myélome multiple, carcinome à cellules de Merkel ou mésothéliome. [38] According to one embodiment, the compound of formula (I) is intended for use in the treatment of cancer of the breast, prostate, colorectal, lung, bladder, skin, uterus , cervix, mouth, brain, stomach, liver, throat, larynx, esophagus, bone, ovary, pancreas, kidney , retina, sinus, nasal cavities, testis, thyroid, vulva, treatment of lymphoma, non-Hodgkin's lymphoma, Hodgkin's lymphoma, leukemia, acute myeloid leukemia or acute lymphocytic leukemia, the multiple myeloma, Merkel cell carcinoma or mesothelioma.
[39] Selon un mode de réalisation, le cancer est un adénocarcinome acineux, un carcinome acineux, un mélanome acro-lentigineux, une kératose actinique, un adénocarcinome, un carcinome adénoïde kystique, un carcinome adénosquameux, un carcinome annexiel, une tumeur du repos surrénal, carcinome adrénocortical, carcinome sécrétant de l'aldostérone, sarcome alvéolaire de la partie molle, carcinome améloblastique de la thyroïde, angiosarcome, carcinome apocrine, tumeur d'Askin, astrocytome, carcinome basocellulaire, carcinome basaloïde, carcinome basosquameux, cancer des voies biliaires, cancer de la moelle osseuse, sarcome botryoïde, carcinome bronchioalvéolaire, adénocarcinome bronchogène, carcinome bronchogène, carcinome ex adénome pléomorphe, chlorome, carcinome cholangiocellulaire, chondrosarcome, choriocarcinome, carcinome du plexus choroïde, adénocarcinome à cellules claires, cancer du côlon, comédocarcinome, carcinome producteur de cortisol, carcinome à cellules cylindriques,
liposarcome différencié, adénocarcinome canalaire de la prostate, carcinome canalaire, carcinome canalaire in situ, cancer duodénal, carcinome eccrine, carcinome embryonnaire, carcinome de l'endomètre, carcinome stromal de l'endomètre, sarcome épithélioïde, sarcome d'Ewing, carcinome exophytique, sarcome fibroblastique, fibrocarcinome, carcinome fibrolamellaire, fibrosarcome, carcinome folliculaire de la thyroïde, cancer de la vésicule biliaire, adénocarcinome gastrique, carcinome à cellules géantes, sarcome à cellules géantes, tumeur osseuse à cellules géantes, gliome, glioblastome multiforme, carcinome à cellules de granulosa, cancer de la tête et du cou, hémangiome, hémangiosarcome, hépatoblastome, carcinome hépatocellulaire, Carcinome à cellules de Hürthle, cancer iléal, carcinome lobulaire infiltrant, carcinome inflammatoire du sein, carcinome intraductal, carcinome intra-épidermique, cancer du jéjunum, sarcome de Kaposi, tumeur de Krukenberg, carcinome à cellules de Kulchitsky, sarcome à cellules de Kupffer, carcinome à grandes cellules, cancer du larynx, mélanome de lentigo maligna, liposarcome, carcinome lobulaire, carcinome lobulaire in situ, lymphoépithéliome, lymphosarcome, mélanome malin, carcinome médullaire, carcinome médullaire de la thyroïde, médulloblastome, carcinome méningé, carcinome micropapillaire, sarcome à cellules mixtes, carcinome mucineux, carcinome muco-épidermoïde, mélanome mucosal, liposarcome myxoïde, myxosarcome, carcinome nasopharyngé, néphroblastome, neuroblastome, mélanome nodulaire, cancer du rein à cellules non claires, cancer du poumon à cellules non petites, carcinome à cellules d'avoine, mélanome oculaire, cancer buccal, carcinome ostéoïde, ostéosarcome, cancer des ovaires, carcinome de Paget, pancréatoblastome, adénocarcinome papillaire, carcinome papillaire, carcinome papillaire de la thyroïde, cancer pelvien, carcinome périampullaire, tumeur phyllode, cancer de l'hypophyse, liposarcome pléomorphe, blastome pleuropulmonaire, carcinome intra- osseux primaire, cancer du rectum, carcinome des cellules rénales, rétinoblastome, rhabdomyosarcome, liposarcome à cellules rondes, cancer cicatriciel, cancer de la vessie schistosomique, carcinome schneidérien, carcinome sébacé, carcinome à cellules en anneau, cancer de la peau, cancer du poumon à petites cellules, ostéosarcome à petites cellules, sarcome des tissus mous, sarcome à cellules fusiformes, carcinome épidermoïde, cancer de l'estomac, mélanome à diffusion superficielle, sarcome synovial, sarcome télangiectasique, carcinome du canal terminal, cancer des testicules, cancer de la thyroïde, carcinome des cellules transitoires, carcinome tubulaire, mélanome tumorigène, carcinome indifférencié, adénocarcinome de l'urètre, cancer de la vessie, cancer de l'utérus, carcinome du corps utérin, mélanome de l'utérus, cancer du vagin, carcinome verruqueux, carcinome villeux, liposarcome bien différencié, tumeur de Wilms ou tumeurs des cellules germinales.
[40] Dans un mode de réalisation préféré, le composé de formule (I) est destiné à être utilisé dans le traitement du cancer du sein chez les mammifères. [39] According to one embodiment, the cancer is acinar adenocarcinoma, acinar carcinoma, acrolentiginous melanoma, actinic keratosis, adenocarcinoma, adenoid cystic carcinoma, adenosquamous carcinoma, adnexal carcinoma, rest tumor adrenal, adrenocortical carcinoma, aldosterone-secreting carcinoma, alveolar soft tissue sarcoma, ameloblastic thyroid carcinoma, angiosarcoma, apocrine carcinoma, Askin tumor, astrocytoma, basal cell carcinoma, basaloid carcinoma, basosquamous carcinoma, bile duct cancer , bone marrow cancer, botryoid sarcoma, bronchioalveolar carcinoma, bronchogenic adenocarcinoma, bronchogenic carcinoma, carcinoma ex pleomorphic adenoma, chloroma, cholangiocellular carcinoma, chondrosarcoma, choriocarcinoma, choroid plexus carcinoma, clear cell adenocarcinoma, colon cancer, comedocarcinoma, carcinoma cortisol producer, columnar cell carcinoma, differentiated liposarcoma, ductal adenocarcinoma of the prostate, ductal carcinoma, ductal carcinoma in situ, duodenal cancer, eccrine carcinoma, embryonic carcinoma, endometrial carcinoma, endometrial stromal carcinoma, epithelioid sarcoma, Ewing's sarcoma, exophytic carcinoma, fibroblastic sarcoma, fibrocarcinoma, fibrolamellar carcinoma, fibrosarcoma, thyroid follicular carcinoma, gallbladder cancer, gastric adenocarcinoma, giant cell carcinoma, giant cell sarcoma, giant cell bone tumor, glioma, glioblastoma multiforme, cell carcinoma granulosa, head and neck cancer, hemangioma, hemangiosarcoma, hepatoblastoma, hepatocellular carcinoma, Hürthle cell carcinoma, ileal cancer, invasive lobular carcinoma, inflammatory breast carcinoma, intraductal carcinoma, intraepidermal carcinoma, jejunal cancer, sarcoma Kaposi tumor, Krukenberg tumor, Kulchitsky cell carcinoma, s kupffer cell arcoma, large cell carcinoma, laryngeal cancer, lentigo maligna melanoma, liposarcoma, lobular carcinoma, lobular carcinoma in situ, lymphoepithelioma, lymphosarcoma, malignant melanoma, medullary carcinoma, medullary thyroid carcinoma, medulloblastoma, meningeal carcinoma , micropapillary carcinoma, mixed cell sarcoma, mucinous carcinoma, mucosquamous cell carcinoma, mucosal melanoma, myxoid liposarcoma, myxosarcoma, nasopharyngeal carcinoma, nephroblastoma, neuroblastoma, nodular melanoma, non-clear cell kidney cancer, non-small cell lung cancer , oat cell carcinoma, ocular melanoma, oral cancer, osteoid carcinoma, osteosarcoma, ovarian cancer, Paget's carcinoma, pancreatoblastoma, papillary adenocarcinoma, papillary carcinoma, papillary thyroid carcinoma, pelvic cancer, periampullary carcinoma, phyllodes tumor, pituitary cancer, pleomorphic liposarcoma, pleuropulmonary blastoma, primary intraosseous carcinoma, rectal cancer, renal cell carcinoma, retinoblastoma, rhabdomyosarcoma, round cell liposarcoma, scarring cancer, schistosomal bladder cancer, schneiderian carcinoma, sebaceous carcinoma, ring cell carcinoma, skin cancer, small cell lung cancer, small cell osteosarcoma, soft tissue sarcoma, spindle cell sarcoma, squamous cell carcinoma, stomach cancer, superficial spreading melanoma, synovial sarcoma, telangiectatic sarcoma, terminal canal carcinoma, testicular cancer , thyroid cancer, transient cell carcinoma, tubular carcinoma, tumorigenic melanoma, undifferentiated carcinoma, urethral adenocarcinoma, bladder cancer, cancer of the uterus, carcinoma of the uterine body, melanoma of the uterus, cancer of the vagina, verrucous carcinoma, villous carcinoma, well-differentiated liposarcoma, Wilms tumor or germ cell tumors. [40] In a preferred embodiment, the compound of formula (I) is for use in the treatment of breast cancer in mammals.
[41 ] Selon un mode de réalisation, le composé est destiné à être utilisé dans le traitement d’un cancer chimiosensible. [41] According to one embodiment, the compound is for use in the treatment of a chemosensitive cancer.
[42] Selon un mode de réalisation particulièrement préféré, le composé de formule (I) est destiné à être utilisé dans le traitement d’un cancer chimiorésistant. [42] According to a particularly preferred embodiment, the compound of formula (I) is intended for use in the treatment of a chemoresistant cancer.
[43] Selon un mode de réalisation, le cancer chimiorésistant est un cancer hématologique ou du sang, tel que la leucémie, en particulier la leucémie myéloïde aiguë ou la leucémie lymphocytaire aiguë, le lymphome, en particulier le lymphome non-hodgkinien et le myélome multiple. [43] According to one embodiment, the chemoresistant cancer is a hematological or blood cancer, such as leukemia, in particular acute myeloid leukemia or acute lymphocytic leukemia, lymphoma, in particular non-Hodgkin's lymphoma and myeloma multiple.
[44] Selon un mode de réalisation, le cancer est chimiorésistant à la daunorubicine, à la cytarabine, au fluorouracile, au cisplatine, à l’acide tout-trans-rétinoïque, au trioxyde d’arsenic, au bortézomib ou à l’une de leurs combinaisons. [44] In one embodiment, the cancer is chemoresistant to daunorubicin, cytarabine, fluorouracil, cisplatin, all-trans-retinoic acid, arsenic trioxide, bortezomib, or one of of their combinations.
[45] Toutes les références aux composés de formules (I) comprennent les références aux sels, aux complexes multi-composants et leurs cristaux liquides. Toutes les références aux composés de formules (I) comprennent également les références aux polymorphes et leurs cristaux habituels. [45] All references to compounds of formula (I) include references to salts, multi-component complexes and their liquid crystals. All references to compounds of formula (I) also include references to polymorphs and their usual crystals.
[46] Le composé selon l’invention peut être sous forme de sels pharmaceutiquement acceptables. Un sel pharmaceutiquement acceptable du composé de formule (I) comprend l’addition d’acide de celui-ci. [46] The compound according to the invention may be in the form of pharmaceutically acceptable salts. A pharmaceutically acceptable salt of the compound of formula (I) comprises the acid addition thereof.
[47] Des sels acides appropriés sont formés à partir d’acides qui forment des sels non toxiques. Par exemple choisi parmi : l’acétate, l’adipate, le benzoate, le bicarbonate, le carbonate, le bisulfate, le sulfate, borate, camsylate, citrate, cyclamate, édisylate, ésylate, formate, furamate, gluceptate, gluconate, glucuronate, hexafluorophosphate, hibenzate, chlorhydrate de chlorure, bromhydrate, bromure, hydroiodure, iodure, iséthionate, lactate, malate, maléate, malonate mésylate, méthylsulfate, naphtylate, 2-napsylate, nicotinate, nitrate, orotate, oxalate, palmitate, pamoate, phosphate, hydrogène phosphate, phosphate dihydrogène, pyroglutamate, saccarate, stérate, succinate, tannate, sels de tartrate, tosylate, trifluoroacétate et xinofoate. De manière préféré, le sel pharmaceutiquement acceptable du composé de formule (I) est formé à partir du lactate. [47] Suitable acid salts are formed from acids that form non-toxic salts. For example chosen from: acetate, adipate, benzoate, bicarbonate, carbonate, bisulfate, sulfate, borate, camsylate, citrate, cyclamate, edisylate, esylate, formate, furamate, gluceptate, gluconate, glucuronate, hexafluorophosphate, hibenzate, chloride hydrochloride, hydrobromide, bromide, hydroiodide, iodide, isethionate, lactate, malate, maleate, malonate mesylate, methylsulfate, naphthylate, 2-napsylate, nicotinate, nitrate, orotate, oxalate, palmitate, pamoate, phosphate, hydrogen phosphate, dihydrogen phosphate, pyroglutamate, saccarate, sterate, succinate, tannate, tartrate salts, tosylate, trifluoroacetate and xinofoate. Preferably, the pharmaceutically acceptable salt of the compound of formula (I) is formed from lactate.
[48] Les sels pharmaceutiquement acceptables des composés de formule (I) peuvent être préparés par une ou plusieurs des trois méthodes suivantes : [48] The pharmaceutically acceptable salts of the compounds of formula (I) can be prepared by one or more of the following three methods:
(i) en faisant réagir le composé de formule (I) avec l'acide désiré ; (i) reacting the compound of formula (I) with the desired acid;
(ii) en éliminant un groupe protecteur labile en milieu acide ou basique d'un précurseur
approprié du composé de formule (I) ou en ouvrant le cycle d'un précurseur cyclique approprié, par exemple une lactone ou un lactame, en utilisant l'acide ou la base désiré ; ou iii) par conversion d'un sel du composé de formule (I) en un autre par réaction avec un acide ou une base appropriés ou au moyen d'une colonne échangeuse d'ions appropriée. (ii) removing an acid or base labile protecting group from a precursor appropriate compound of formula (I) or by opening the cycle of an appropriate cyclic precursor, for example a lactone or a lactam, using the desired acid or base; or iii) by conversion of one salt of the compound of formula (I) into another by reaction with an appropriate acid or base or by means of an appropriate ion exchange column.
[49] Ces trois réactions sont généralement effectuées en solution. Le sel obtenu peut précipiter et être recueilli par filtration ou peut être récupéré par évaporation du solvant. Le degré d'ionisation du sel obtenu peut varier de complètement ionisé à presque non ionisé. [49] These three reactions are usually carried out in solution. The salt obtained can precipitate and be collected by filtration or can be recovered by evaporation of the solvent. The degree of ionization of the salt obtained can vary from completely ionized to almost non-ionized.
[50] L’invention concerne en deuxième objet une composition pharmaceutique comprenant dans un véhicule pharmaceutiquement acceptable au moins un composé selon l’invention, comme décrit ci-dessus pour son utilisation pour faire régresser une tumeur cancéreuse de mammifère. [50] The second subject of the invention relates to a pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one compound according to the invention, as described above for its use in causing a cancerous mammalian tumor to regress.
[51 ] Selon un mode de réalisation, la composition pharmaceutique comprend en outre au moins un autre agent thérapeutique. [51] According to one embodiment, the pharmaceutical composition further comprises at least one other therapeutic agent.
[52] Selon un monde de réalisation préféré, cet autre agent thérapeutique est un agent antinéoplasique. [52] According to a preferred embodiment, this other therapeutic agent is an antineoplastic agent.
[53] Selon un mode de réalisation, l'agent antinéoplasique est un agent endommageant l'ADN tel que la camptothécine, l'irinotécan, le topotécan, l'amsacrine, l'étoposide, le phosphate d'étoposide, le téniposide, le cisplatine, le carboplatine, l'oxaliplatine, le cyclophosphamide, le chlorambucil, la chlorméthine, le busulfan, le tréosulfan ou le thiotépa, un antibiotique antitumoral tel que la daunorubicine, la doxorubicine, l'épirubicine, l'idarubicine, la mitoxantrone, la valrubicine, l'actinomycine D, la mitomycine, la bléomycine ou la plicamycine, un antimétabolite tel que le 5-fluorouracile, la cytarabine, la fludarabine ou le méthotrexate, un antimitotique tel que le paclitaxel, le docétaxel, la vinblastine, la vincristine, la vindésine ou la vinorelbine, ou divers agents antinéoplasiques tels que le bortézomib, l'acide tout- trans-rétinoïque, le trioxyde d'arsenic, ou l'un de leurs produits combinés. [53] In one embodiment, the antineoplastic agent is a DNA damaging agent such as camptothecin, irinotecan, topotecan, amsacrine, etoposide, etoposide phosphate, teniposide, cisplatin, carboplatin, oxaliplatin, cyclophosphamide, chlorambucil, chlormethine, busulfan, treosulfan or thiotepa, an antitumor antibiotic such as daunorubicin, doxorubicin, epirubicin, idarubicin, mitoxantrone, valrubicin, actinomycin D, mitomycin, bleomycin or plicamycin, an antimetabolite such as 5-fluorouracil, cytarabine, fludarabine or methotrexate, an antimitotic such as paclitaxel, docetaxel, vinblastine, vincristine, vindesine or vinorelbine, or various antineoplastic agents such as bortezomib, all-trans-retinoic acid, arsenic trioxide, or one of their combination products.
[54] Selon un mode de réalisation, la composition pharmaceutique est utilisée dans le traitement du cancer chez un patient souffrant d’une tumeur qui est chimiorésistante audit agent antinéoplasique lorsqu’il n’est pas administré en combinaison avec un composé selon l’invention. [54] According to one embodiment, the pharmaceutical composition is used in the treatment of cancer in a patient suffering from a tumor which is chemoresistant to said antineoplastic agent when it is not administered in combination with a compound according to the invention .
[55] Selon un mode de réalisation, la composition pharmaceutique est utilisée dans le traitement du cancer chez un patient souffrant d’une tumeur qui est chimiosensible audit
agent antinéoplasique, et la dose de l’agent antinéoplasique administré audit patient en combinaison avec un composé selon l’invention ou l’un de ses sels pharmaceutiquement acceptables est inférieure à la dose de l’agent antinéoplasique lorsqu’il n’est pas administré en combinaison avec un composé selon l’invention. En particulier, la dose de l’agent antinéoplasique administré audit patient en combinaison avec un composé selon l’invention ou l’un de ses sels pharmaceutiquement acceptables est inférieure à la dose de l’agent antinéoplasique administré seul, sans autre principe actif. [55] According to one embodiment, the pharmaceutical composition is used in the treatment of cancer in a patient suffering from a tumor which is chemosensitive to said antineoplastic agent, and the dose of the antineoplastic agent administered to said patient in combination with a compound according to the invention or one of its pharmaceutically acceptable salts is lower than the dose of the antineoplastic agent when it is not administered in combination with a compound according to the invention. In particular, the dose of the antineoplastic agent administered to said patient in combination with a compound according to the invention or one of its pharmaceutically acceptable salts is lower than the dose of the antineoplastic agent administered alone, without any other active ingredient.
[56] La composition pharmaceutique selon l’invention peut également comprendre en outre d’autres composés thérapeutiques actifs utilisés couramment dans le traitement de la pathologie énoncée ci-dessus. [56] The pharmaceutical composition according to the invention may also also comprise other active therapeutic compounds commonly used in the treatment of the pathology set out above.
[57] Selon un mode de réalisation, la composition pharmaceutique de l’invention peut être administrée par toutes voies, notamment par voies : intradermique, intramusculaire, intrapéritonéale, intraveineuse ou sous-cutanée, pulmonaire, transmuqueuse (orale, intranasale, intravaginale, rectale), inhalation par spray nasal, utilisant une formulation en comprimé, capsule, solution, poudre, gel, particule ; et contenu dans une seringue, un dispositif implanté, une pompe osmotique, une cartouche, une micropompe ; ou tout autre moyen apprécié par l'artisan qualifié, bien connu dans l'art. L'administration spécifique à un site peut être réalisée, par exemple par voie intratumorale, intra-articulaire, intrabronchique, intra-abdominale, intracapsulaire, intra-cartilagineuse, intracavitaire, intracérébelleuse, intracérébroventriculaire, intracolique, intracervicale, intragastrique, intra-hépatique, intracardiaque, intraostéale, intra-pelvien, intrapéricardique, intrapéritonéal, intrapleural, intraprostatique, intrapulmonaire, intrarectal, intrarénal, intrarétinien, intraspinal, intrasynovial, intrathoracique, intra-utérin, intravasculaire, intravésical, intralésionnel, vaginal, rectal, buccal, sublingual, intranasal ou transdermique dans un dosage adapté comprenant les véhicules usuels non toxiques et pharmaceutiquement acceptables. De manière préférée, la composition pharmaceutique est sous forme appropriée pour être administrée par voie intraveineuse, sous-cutanée, intrapéritonéale ou orale. La voie orale étant particulièrement préférée. [57] According to one embodiment, the pharmaceutical composition of the invention can be administered by any route, in particular by route: intradermal, intramuscular, intraperitoneal, intravenous or subcutaneous, pulmonary, transmucosal (oral, intranasal, intravaginal, rectal ), nasal spray inhalation, using tablet, capsule, solution, powder, gel, particle formulation; and contained in a syringe, an implanted device, an osmotic pump, a cartridge, a micropump; or any other means appreciated by the skilled artisan well known in the art. Site-specific administration can be performed, for example, intratumoral, intra-articular, intrabronchial, intra-abdominal, intracapsular, intra-cartilaginous, intracavitary, intracerebellar, intracerebroventricular, intracolonic, intracervical, intragastric, intrahepatic, intracardiac , intraosteal, intrapelvic, intrapericardial, intraperitoneal, intrapleural, intraprostatic, intrapulmonary, intrarectal, intrarenal, intraretinal, intraspinal, intrasynovial, intrathoracic, intrauterine, intravascular, intravesical, intralesional, vaginal, rectal, buccal, sublingual, intranasal or transdermal in a suitable dosage comprising the usual non-toxic and pharmaceutically acceptable vehicles. Preferably, the pharmaceutical composition is in a form suitable for being administered intravenously, subcutaneously, intraperitoneally or orally. The oral route is particularly preferred.
[58] Outre les animaux à sang chaud tels que les souris, les rats, les chiens, les chats, les moutons, les chevaux, les vaches et les singes, le composé de l’invention est également efficace sur les humains. [58] Besides warm-blooded animals such as mice, rats, dogs, cats, sheep, horses, cows and monkeys, the compound of the invention is also effective on humans.
[59] Selon un mode de réalisation, les compositions pharmaceutiques pour l'administration des composés de cette invention peuvent être présentées sous forme de doses unitaires et peuvent être préparées par l'une des méthodes bien connues dans l’état de l'art. Toutes les méthodes comprennent l'étape consistant à mettre le principe actif en association avec
le support qui constitue un ou plusieurs ingrédients accessoires. En général, les compositions pharmaceutiques sont préparées en mettant l'ingrédient actif en association avec un support liquide ou un support solide finement divisé ou les deux, puis, si nécessaire, en façonnant le produit dans la formulation souhaitée. Dans la composition pharmaceutique, le composé de l'objet actif est inclus en quantité suffisante pour produire l'effet souhaité sur le processus ou l'état des maladies. Les compositions pharmaceutiques contenant le principe actif peuvent se présenter sous une forme adaptée à l'usage oral, par exemple sous forme de comprimés, de pastilles, de suspensions aqueuses ou huileuses, de poudres ou de granulés dispersibles, d'émulsions, de capsules, de sirops, d'élixirs, de solutions, de timbres buccaux, de gel oral, de chewing-gum, de comprimés à mâcher, de poudre effervescente et de comprimés effervescents. Les compositions pharmaceutiques contenant le principe actif peuvent se présenter sous une forme de suspension aqueuse ou huileuse. [59] According to one embodiment, pharmaceutical compositions for the administration of the compounds of this invention may be presented in unit dose form and may be prepared by any of the methods well known in the state of the art. All methods include the step of bringing the active ingredient into association with the carrier which constitutes one or more accessory ingredients. In general, pharmaceutical compositions are prepared by bringing the active ingredient into association with a liquid carrier or a finely divided solid carrier or both, and then, if necessary, shaping the product into the desired formulation. In the pharmaceutical composition, the active object compound is included in an amount sufficient to produce the desired effect on the disease process or state. The pharmaceutical compositions containing the active ingredient may be in a form suitable for oral use, for example in the form of tablets, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsions, capsules, syrups, elixirs, solutions, mouth patches, oral gel, chewing gum, chewable tablets, effervescent powder and effervescent tablets. The pharmaceutical compositions containing the active principle can be in the form of an aqueous or oily suspension.
[60] Selon un mode de réalisation, les suspensions aqueuses contiennent les matières actives en mélange avec des excipients adaptés à la fabrication de suspensions aqueuses. Ces excipients sont des agents de suspension, par exemple la carboxyméthylcellulose sodique, la méthylcellulose, l'hydroxy-propylméthylcellulose, l'alginate de sodium, la polyvinyl-pyrrolidone, la gomme adragante et la gomme d'acacia ; les agents dispersants ou mouillants peuvent être un phosphatide naturel, par exemple la lécithine, ou des produits de condensation d'un oxyde d'alkylène avec des acides gras, par exemple le stéarate de polyoxyéthylène, ou des produits de condensation de l'oxyde d'éthylène avec des alcools aliphatiques à longue chaîne, par exemple l'heptadécaéthylène-oxycétanol, ou des produits de condensation de l'oxyde d'éthylène avec des esters partiels dérivés d'acides gras et d'un hexitol, comme le monooléate de polyoxyéthylène sorbitol, ou des produits de condensation de l'oxyde d'éthylène avec des esters partiels dérivés d'acides gras et d'anhydrides d'hexitol, par exemple le monooléate de polyéthylène sorbitol. Les suspensions aqueuses peuvent également contenir un ou plusieurs conservateurs, par exemple de l'éthyle, ou du n-propyle, du p-hydroxybenzoate, un ou plusieurs colorants, un ou plusieurs aromatisants, et un ou plusieurs édulcorants, comme le saccharose ou la saccharine. [60] According to one embodiment, the aqueous suspensions contain the active materials mixed with excipients suitable for the manufacture of aqueous suspensions. These excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydroxy-propylmethylcellulose, sodium alginate, polyvinyl-pyrrolidone, gum tragacanth and gum acacia; the dispersing or wetting agents may be a natural phosphatide, for example lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of alkylene oxide ethylene with long chain aliphatic alcohols, for example heptadecaethylene-oxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol, such as polyoxyethylene monooleate sorbitol, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene sorbitol monooleate. The aqueous suspensions may also contain one or more preservatives, for example ethyl, or n-propyl, p-hydroxybenzoate, one or more colorants, one or more flavoring agents, and one or more sweeteners, such as sucrose or saccharin.
[61 ] Selon un mode de réalisation, les suspensions huileuses peuvent être formulées en mettant en suspension le principe actif dans une huile végétale, par exemple l'huile d'arachide, d'olive, de sésame ou de coco, ou dans une huile minérale telle que la paraffine liquide. Les suspensions huileuses peuvent contenir un agent épaississant, par exemple de la cire d'abeille, de la paraffine dure ou de l'alcool cétylique. Des agents édulcorants tels que ceux mentionnés ci-dessus et des agents aromatisants peuvent être ajoutés pour
obtenir une préparation orale agréable au goût. Ces compositions peuvent être conservées par l'ajout d'un antioxydant tel que l'acide ascorbique. Les poudres et granules dispersables qui conviennent à la préparation d'une suspension aqueuse par addition d'eau fournissent l'ingrédient actif en mélange avec un agent dispersant ou mouillant, un agent de suspension et un ou plusieurs conservateurs. [61] According to one embodiment, the oily suspensions can be formulated by suspending the active principle in a vegetable oil, for example peanut, olive, sesame or coconut oil, or in a mineral such as liquid paraffin. Oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those mentioned above and flavoring agents can be added to obtain a palatable oral preparation. These compositions can be preserved by adding an antioxidant such as ascorbic acid. Dispersible powders and granules which are suitable for the preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, a suspending agent and one or more preservatives.
[62] Les sirops et élixirs peuvent être formulés avec des agents édulcorants, par exemple le glycérol, le propylène glycol, le sorbitol ou le saccharose. Ces formulations peuvent également contenir un émollient, un agent de conservation, des agents aromatisants et colorants. [62] Syrups and elixirs can be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose. These formulations may also contain emollient, preservative, flavoring and coloring agents.
[63] Les compositions pharmaceutiques peuvent se présenter sous la forme d'une suspension aqueuse ou oléagineuse injectable de manière stérile. Cette suspension peut être formulée selon l'art connu en utilisant les agents dispersants ou mouillants et les agents de suspension appropriés qui ont été mentionnés ci-dessus. La préparation stérile injectable peut également être une solution ou une suspension stérile injectable dans un diluant ou un solvant non toxique acceptable par voie parentérale, par exemple une solution dans du 1 ,3-butane diol. Les véhicules et solvants acceptables pouvant être utilisés comprennent ; l'eau, le liquide de Ringer et la solution isotonique de chlorure de sodium. En outre, des huiles fixes stériles sont traditionnellement utilisées comme solvant ou milieu de suspension. À cette fin, toute huile fixe peut être utilisée, y compris les mono- ou diglycérides synthétiques. En outre, les acides gras tels que l'acide oléique sont utilisés dans la préparation des produits injectables. [63] The pharmaceutical compositions may be in the form of an aqueous or oleaginous suspension which can be injected in a sterile manner. This suspension can be formulated according to the known art using the appropriate dispersing or wetting agents and suspending agents which have been mentioned above. The sterile injectable preparation can also be a sterile injectable solution or suspension in a non-toxic diluent or solvent acceptable parenterally, for example a solution in 1,3-butane diol. Acceptable vehicles and solvents that can be used include; water, Ringer's fluid and isotonic sodium chloride solution. Additionally, sterile fixed oils are traditionally used as a solvent or suspending medium. For this purpose, any fixed oil can be used, including synthetic mono- or diglycerides. Also, fatty acids such as oleic acid are used in the preparation of injectables.
[64] Les compositions pharmaceutiques de la présente invention peuvent également être administrés sous forme de suppositoires pour l'administration rectale du médicament. Ces compositions peuvent être préparées en mélangeant le médicament avec un excipient approprié non irritant qui est solide à la température ordinaire mais liquide à la température rectale et qui fondra donc dans le rectum pour libérer le médicament. Ces matières comprennent le beurre de cacao et les polyéthylèneglycols. [64] The pharmaceutical compositions of the present invention can also be administered in the form of suppositories for rectal administration of the drug. These compositions can be prepared by mixing the drug with a suitable non-irritating excipient which is solid at room temperature but liquid at the rectal temperature and which will therefore melt in the rectum to release the drug. These materials include cocoa butter and polyethylene glycols.
[65] En outre, les compositions pharmaceutiques peuvent être administrés par voie oculaire au moyen de solutions ou de pommades. De plus, l'administration transdermique des composés en question peut être réalisée au moyen de patchs iontophorétiques et autres. Pour l'utilisation topique, on utilise des crèmes, des pommades, des gelées, des solutions ou des suspensions. [65] In addition, the pharmaceutical compositions can be administered ocularly by means of solutions or ointments. Additionally, transdermal delivery of the compounds in question can be achieved by means of iontophoretic and other patches. For topical use, creams, ointments, jellies, solutions or suspensions are used.
[66] Dans le traitement d'un mammifère ou patient souffrant ou risquant de développer un cancer, un dosage approprié de la composition pharmaceutique de cette invention peut généralement être d'environ 0,1 à 50 000 microgrammes (pg) par kg de poids corporel du
patient par jour, qui peut être administré en doses uniques ou multiples. Le niveau de dosage sera de préférence d'environ 1000 à environ 40 000 pg/kg par jour, en fonction de nombreux facteurs tels que la gravité du cancer à traiter, l'âge et l'état de santé relatif du sujet, la voie et la forme d'administration. Pour l'administration orale, cette composition peut être fournie sous forme de comprimés contenant 1000 à 10 0000 microgrammes de chacun des principes actifs, en particulier 1000, 5000, 10 000, 15 000, 20 000, 25 000, 50 000, 75000, 10 0000 microgrammes de chaque principe actif. Cette composition peut être administrée selon un schéma de 1 à 4 fois par jour, par exemple une ou deux fois par jour. Le régime posologique peut être ajusté pour fournir une réponse thérapeutique optimale.[66] In the treatment of a mammal or patient suffering from or at risk of developing cancer, a suitable dosage of the pharmaceutical composition of this invention may generally be from about 0.1 to 50,000 micrograms (µg) per kg of body weight. bodily of patient per day, which can be administered in single or multiple doses. The dosage level will preferably be from about 1000 to about 40,000 pg/kg per day, depending on many factors such as the severity of the cancer to be treated, the age and relative health of the subject, the route and the form of administration. For oral administration, this composition can be supplied in the form of tablets containing 1000 to 100000 micrograms of each of the active ingredients, in particular 1000, 5000, 10000, 15000, 20000, 25000, 50000, 75000, 10,0000 micrograms of each active ingredient. This composition can be administered on a 1 to 4 times daily schedule, for example once or twice daily. The dosage regimen may be adjusted to provide an optimal therapeutic response.
L’invention divulgue également un procédé de fabrication du composé de formule (I). The invention also discloses a process for the manufacture of the compound of formula (I).
[67] Selon un mode de réalisation, le procédé de fluoration en C3 comprend une étape de fluoration de la Dendrogénine A, réalisée à partir d’un réactif de fluoration, par exemple le Diéthylaminosulfur trifluoride (DAST) ou le tétrafluoroborate. La réaction dé fluoration avec le DAST est décrite dans la littérature « Tetrahedron letters 1979, 20, 1823-1826, A new method for fluorination of sterols » (https://doi.Org/10.1016/30040-4039(01)86228-6). La réaction de fluoration avec le tétrafluoroborate est décrite dans la littérature « Org. Lett., Vol. 11, No. 21, 2009, 5050-5053, Aminodifluorosulfinium Tétrafluoroborate Salts as Stable and Crystalline Deoxofluorinating Reagents ». [67] According to one embodiment, the C3 fluorination process includes a Dendrogenin A fluorination step, carried out using a fluorination reagent, for example Diethylaminosulfur trifluoride (DAST) or tetrafluoroborate. The fluorination reaction with DAST is described in the literature “Tetrahedron letters 1979, 20, 1823-1826, A new method for fluorination of sterols” (https://doi.Org/10.1016/30040-4039(01)86228- 6). The fluorination reaction with tetrafluoroborate is described in the literature “Org. Let., Vol. 11, No. 21, 2009, 5050-5053, Aminodifluorosulfinium Tetrafluoroborate Salts as Stable and Crystalline Deoxofluorinating Reagents”.
[68] Selon un mode de réalisation, le procédé de synthèse du 5a-hydroxy-6[3-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro dilactate comprend les étapes suivantes :[68] According to one embodiment, the process for the synthesis of 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluorodilactate comprises the following steps:
- dissolution du composé 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p- fluoro dans de l’éthanol anhydre puis y ajouter de l’acide lactique ; - dissolving the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro in anhydrous ethanol then adding lactic acid;
- agitation du mélange à température ambiante durant 3 h ; - stirring the mixture at room temperature for 3 hours;
- évaporation du solvant organique. - evaporation of the organic solvent.
La poudre blanche obtenue est le composé 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-fluoro dilactate. The white powder obtained is the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluorodilactate.
[69] Selon un mode de réalisation du procédé, la température ambiante est comprise entre 15 et 40 °C, par exemple 25 ou 37, préférentiellement 20 °C. [69] According to one embodiment of the method, the ambient temperature is between 15 and 40°C, for example 25 or 37, preferably 20°C.
Brève description des figures Brief description of figures
[70] L’invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description suivante de plusieurs modes de réalisation particuliers de l’invention, donnés uniquement à titre illustratif et non limitatif, en référence aux dessins annexés.
[71] [fig-1 ] La figure 1 représente les résultats d’une étude de cytotoxicité du 5a-hydroxy- 6|3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro (DX111 ) sur les cellules Neuro2a via un test de bleu de trypan. [70] The invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly during the following description of several particular embodiments of the invention, given for illustrative purposes only. and non-limiting, with reference to the accompanying drawings. [71][fig-1] Figure 1 shows the results of a cytotoxicity study of 5a-hydroxy-6|3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- fluoro (DX111) on Neuro2a cells via trypan blue assay.
[72] [fig.2] La figure 2 illustre les résultats d’un test de viabilité cellulaires MTT réalisé sur des cellules tumorales mammaires MCF-7 en présence du composé 5a-hydroxy-6[3-[2- (1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro. [72] [fig.2] Figure 2 illustrates the results of an MTT cell viability test performed on MCF-7 breast tumor cells in the presence of the compound 5a-hydroxy-6[3-[2-(1H- imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro.
[73] [fig. 3] La figure 3 illustre les résultats de l’activité de la Cholestérol Epoxyde Hydrolase (ChEH) dans des cellules MCF-7 en présente du composé 5a-hydroxy-6[3-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro. [73] [fig. 3] Figure 3 illustrates the results of Cholesterol Epoxide Hydrolase (ChEH) activity in MCF-7 cells in the presence of the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl )-ethylamino]-cholestan-3p-fluoro.
[74] [fig. 4] La figure 4 illustre le profil pharmacocinétique du composé 5a-hydroxy-6 -[2- (1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-méthoxyle (DX103) en comparaison avec le composé Dendrogénine A (DX101). [74] [fig. 4] Figure 4 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyl (DX103) in comparison with the compound Dendrogenin A ( DX101).
[75] [fig. 5] La figure 5 illustre le profil pharmacocinétique du composé 5a-hydroxy-6 -[2- (1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-éthoxyle (DX105) en comparaison avec le composé Dendrogénine A (DX101). [75] [fig. 5] Figure 5 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxyl (DX105) in comparison with the compound Dendrogenin A ( DX101).
[76] [fig. 6] La figure 6 illustre le profil pharmacocinétique du composé 5a-hydroxy-6 -[2- (1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro (DX111) en comparaison avec le composé Dendrogénine A (DX101). [76] [fig. 6] Figure 6 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro (DX111) in comparison with the compound Dendrogenin A ( DX101).
[77] [fig. 7A] et [fig. 7B] Les figures 7A et 7B illustrent l’évolution de la croissance tumorale et le taux de survie chez la souris en comparant le traitement avec le DX111 et le DX101 . [77] [fig. 7A] and [fig. 7B] Figures 7A and 7B illustrate the course of tumor growth and survival rate in mice comparing treatment with DX111 and DX101.
[78] [fig. 8] La figure 8 illustre le profil pharmacocinétique du composé 5a-hydroxy-6 -[2- (1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-azoture (DX123) en comparaison avec le composé Dendrogénine A (DX101). [78] [fig. 8] Figure 8 illustrates the pharmacokinetic profile of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide (DX123) in comparison with the compound Dendrogenin A ( DX101).
EXEMPLES EXAMPLES
[79] Différentes expériences ont été réalisées afin d’évaluer les caractéristiques des composés de formule (I). [79] Various experiments were carried out in order to evaluate the characteristics of the compounds of formula (I).
[80] Les composés préférés selon l’invention correspondant à la formule I générale dont il est décrit ci-après la synthèse et l’activité sont les suivants :
[80] The preferred compounds according to the invention corresponding to general formula I, the synthesis and activity of which are described below, are the following:
Les autres composés rentrant dans la portée de la formule générale, non décrits, font partie intégrante des composés selon l’invention. The other compounds falling within the scope of the general formula, not described, form an integral part of the compounds according to the invention.
[81 ] Exemple 1 : Synthèse du composé analogue 5a-hydroxy-6P-[2-(1 H-imidazol-4-yl)- éthylamino1-cholestan-3P-fluoro (nommé DX1 11 ) [81] Example 1: Synthesis of the analogous compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-fluoro (named DX111)
La première étape est une synthèse du composé 3p-fluorocholestane comprenant les étapes suivantes :
The first step is a synthesis of the compound 3p-fluorocholestane comprising the following steps:
[82] 5.00 g de trifluorure de diéthylaminosulfure (d=1 .22 g/ml, 31 .0 mmol) ont été dissous on 200 ml de DCM anhydre. 6.66 grammes (g) de cholestérol (17.2 mmol) ont été mis en solution dans 100 millilitres (ml) de dichlorométhane anhydre et ajouté goutte par goutte au réactif fluoré à la température de 0°C. Le mélange ainsi obtenu a été laissé sur agitation magnétique pour 5 heures en la laissant chauffer jusqu’au la température ambiante. A l’issus de cette durée, la réaction a été neutralisée par addition de 100 ml d’une solution de NaHCO3 sat. Le mélange a été transféré dans une ampoule à décanter et la phase organique a été lavée par 2 fois avec NaHCO3 sat, 2 autres fois par une solution saturée de NaCI et une seule fois par l’eau. La phase organique a été séchée sur du MgSO4, filtrée et puis évaporée permettant l’obtention d’une poudre blanche. 6.61 g correspondant au 3p-fluorocholestane a été obtenu. Le rendement final de la réaction est de 99 %.
[83] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 5.40 - 5.39 (d, 1 H), 4.47 - 4.30 (m, 1 H), 2.45 - 2.42 (t, 2H), 2.03 - 1.95 (m, 3H), 1.90 - 0.95 (m, 26H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.68 (s, 3H). [82] 5.00 g of diethylaminosulfide trifluoride (d=1.22 g/ml, 31.0 mmol) was dissolved in 200 ml of anhydrous DCM. 6.66 grams (g) of cholesterol (17.2 mmol) were dissolved in 100 milliliters (ml) of anhydrous dichloromethane and added drop by drop to the fluorinated reagent at a temperature of 0°C. The mixture thus obtained was left on magnetic stirring for 5 hours, allowing it to heat up to room temperature. At the end of this period, the reaction was neutralized by adding 100 ml of a solution of NaHCO 3 sat. The mixture was transferred to a separatory funnel and the organic phase was washed twice with NaHCO 3 sat, 2 other times with a saturated NaCl solution and once with water. The organic phase was dried over MgSO 4 , filtered and then evaporated, allowing a white powder to be obtained. 6.61 g corresponding to 3p-fluorocholestane was obtained. The final yield of the reaction is 99%. [83] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 5.40 - 5.39 (d, 1 H), 4.47 - 4.30 (m, 1 H), 2.45 - 2.42 (t, 2H), 2.03 - 1.95 (m, 3H), 1.90 - 0.95 (m, 26H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.68 (s, 3H).
[84] La deuxième étape consiste à synthétiser à partir du 3p-fluoro-cholestane le composé 3p-fluoro-5,6a-Epoxy-cholestane de la manière suivante :
[84] The second step consists in synthesizing from 3p-fluoro-cholestane the compound 3p-fluoro-5,6a-Epoxy-cholestane as follows:
[85] 4.96 g d’acide méta-chloro-peroxybenzoïque au 77 % de pureté (22.1 mmol) ont été dissous dans 100 ml de dichlorométhane et ajouté goutte à goutte dans un mélange de 6.61 g de 3p-fluorocholestane (17.0 mmol) dissous dans 50 ml de dichlorométhane. Le mélange ainsi obtenu a été mis sous agitation et maintenu à température ambiante durant 3 heures. Le mélange obtenu a été lavé deux fois avec une solution aqueuse de NasSsOs à 10 % en poids, deux fois une solution saturée de NaHCO3 et une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention de 6.90 g d’une poudre blanche comprenant : 3p-fluoro-5,6a-Epoxy-cholestane (85 % de la poudre blanche) et 3p-fluoro-5,6p-Epoxy-cholestane (15 % de la poudre blanche). Le 3p-fluoro-5,6a- epoxycholestane a été utilisé sans purification supplémentaire. [85] 4.96 g of meta-chloro-peroxybenzoic acid at 77% purity (22.1 mmol) was dissolved in 100 ml of dichloromethane and added dropwise to a mixture of 6.61 g of 3p-fluorocholestane (17.0 mmol) dissolved in 50 ml of dichloromethane. The mixture thus obtained was stirred and kept at ambient temperature for 3 hours. The mixture obtained was washed twice with an aqueous solution of NasSsOs at 10% by weight, twice with a saturated solution of NaHCO 3 and a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 6.90 g of a white powder comprising: 3p-fluoro-5,6a-Epoxy-cholestane (85% of the white powder) and 3p-fluoro-5 ,6p-Epoxy-cholestane (15% white powder). 3p-Fluoro-5,6a-epoxycholestane was used without further purification.
[86] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 4.82 - 4.64 (m, 1 H), 2.91 - 2.90 (d, 1 H), 2.28 - 2.21 (m, 1 H), 2.10 - 2.06 (m, 1 H), 1.97 - 1.70 (m, 6H), 1 .59 - 0.92 (m, 23H), 0.89 - 0.88 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.61 (s, 3H). [86] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 4.82 - 4.64 (m, 1 H), 2.91 - 2.90 (d, 1 H), 2.28 - 2.21 (m, 1 H), 2.10 - 2.06 (m, 1H), 1.97 - 1.70 (m, 6H), 1.59 - 0.92 (m, 23H), 0.89 - 0.88 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.61 (s, 3H).
[87] La troisième étape consiste à synthétiser le 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-fluoro (DX1 11 sous forme basique) de la manière suivante :
[88] 0.80 g d’histamine sous sa forme basique (7.2 mmol) a été ajouté à une solution butanolique de 10 ml comprenant 1 .45 g du composé 3p-fluoro-5,6a-epoxycholestane (3.6 mmol) sous agitation à 130°C. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures. [87] The third step is to synthesize 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro (DX1 11 in basic form) as follows: [88] 0.80 g of histamine in its basic form (7.2 mmol) was added to a 10 ml butanol solution comprising 1.45 g of the compound 3p-fluoro-5,6a-epoxycholestane (3.6 mmol) with stirring at 130 °C. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
[89] L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 3p-fluoro-5,6a-epoxycholestane. [89] The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 3p-fluoro-5,6a-epoxycholestane.
[90] Après refroidissement, le mélange a été dilué dans 15 ml de méthyl tert-butyl éther. La phase organique a été lavée par 3 fois 15 ml d’eau. [90] After cooling, the mixture was diluted in 15 ml of methyl tert-butyl ether. The organic phase was washed with 3 times 15 ml of water.
[91 ] La phase organique a été séchée sur du MgSC anhydre, filtré et puis évaporée permettant l’obtention d’une huile brune. Le mélange a été purifié par colonne chromatographique sur gel de Silice sur un automate de purification comprenant une colonne prépacké de 20 g éluant Acétate d’éthyle 100 %. Une poudre blanche de 0.86 g de 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro a été obtenue. Le rendement final de la réaction est de 41 % avec une pureté supérieure à 97 % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). [91] The organic phase was dried over anhydrous MgSC, filtered and then evaporated to obtain a brown oil. The mixture was purified by column chromatography on silica gel on a purification machine comprising a prepacked 20 g column eluting with 100% ethyl acetate. A white powder of 0.86 g of 5α-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro was obtained. The final yield of the reaction is 41% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
[92] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 7.54 (s, 1 H), 6.80 (s, 1 H), 5.05 - 4.88 (m, 1 H), 3.03 - 2.96 (m, 1 H), 2.77 - 2.73 (m, 3H), 2.46 (s, 1 H), 2.27 - 2.20 (q, 1 H), 2.00 - 1 .98 (d, 2H), 1 .86 - 0.94 (m, 31 H), 0.91 - 0.89 (d, 3H), 0.87 - 0.85 (d, 6H), 0.67 (s, 3H). [92] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 7.54 (s, 1 H), 6.80 (s, 1 H), 5.05 - 4.88 (m, 1 H), 3.03 - 2.96 (m, 1H), 2.77 - 2.73 (m, 3H), 2.46 (s, 1H), 2.27 - 2.20 (q, 1H), 2.00 - 1.98 (d, 2H), 1.86 - 0.94 (m, 31H), 0.91 - 0.89 (d, 3H), 0.87 - 0.85 (d, 6H), 0.67 (s, 3H).
[93] Exemple 2 : Préparation d’un sel dilactate du composé 5a-hydroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3P-fluoro (DX11 1 sous forme dilactate) : [93] Example 2: Preparation of a dilactate salt of the compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-fluoro (DX11 1 in dilactate form):
[94] Un sel dilactate du composé 5a-hydroxy-6 -[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-fluoro a été préparé de la manière suivante
[94] A dilactate salt of the compound 5a-hydroxy-6-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro was prepared as follows
[95] 267.2 mg d’acide lactique (2.97 mmol) a été ajouté à une solution de 0.76 g de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro dans 15 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température ambiante 3 heures. Une
évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche de 1.03 g de 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro dilactate. [95] 267.2 mg of lactic acid (2.97 mmol) was added to a solution of 0.76 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- fluoro in 15 ml of anhydrous ethanol with stirring. Stirring was maintained at ambient temperature for 3 hours. A vacuum evaporation of the organic solvent yields a white powder of 1.03 g of 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluorodilactate .
[96] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.58 (s, 1 H), 6.79 (s, 1 H), 4.73 - 4.57 (m, 1 H), 3.86 - 3.82 (dd, 2H), 3.35 - 3.31 (dd, 2H), 3.18 - 3.13 (m, 1 H), 3.03 - 2.98 (m, 1 H), 2.77 - 2.75 (t, 2H), 2.70 (s, 1 H), 2.12 - 2.05 (dd, 1 H), 1.78 - 1 .76 (d, 1 H), 1.70 - 1 .68 (d, 1 H), 1 .63 - 0.85 (m, 30H), 0.78 - 0.73 (d, 2H), 0.68 - 0.66 (d, 3H), 0.61 -0.60 (dd, 6H), 0.49 (s, 3H). [96] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.58 (s, 1 H), 6.79 (s, 1 H), 4.73 - 4.57 (m, 1 H), 3.86 - 3.82 ( dd, 2H), 3.35 - 3.31 (dd, 2H), 3.18 - 3.13 (m, 1H), 3.03 - 2.98 (m, 1H), 2.77 - 2.75 (t, 2H), 2.70 (s, 1H) , 2.12 - 2.05 (dd, 1H), 1.78 - 1.76 (d, 1H), 1.70 - 1.68 (d, 1H), 1.63 - 0.85 (m, 30H), 0.78 - 0.73 ( d, 2H), 0.68 - 0.66 (d, 3H), 0.61 -0.60 (dd, 6H), 0.49 (s, 3H).
[97] Exemple 3 : préparation des dérivés ou analogues 3a amino et 3a sulfure de formule (I) : [97] Example 3: Preparation of 3a amino and 3a sulfide derivatives or analogues of formula (I):
[98] Les étapes sont les suivantes :
[98] The steps are as follows:
Nu = R2R3N et dans le R2S la réaction Nu = R 2 R 3 N and in the R 2 S the reaction
Nu = R2R3N et R2O2S donne le produit d'oxydation Nu = R2R3N and R2O2S gives the oxidation product
Mettre en agitation du cholestérol en tetrahydrofurane (THF) en présence de NaH durant cinq minutes à 70°C, additionner du paratoluènesulfonique chlorure (p-TsCI) et agiter le mélange durant 4 heures à 70°C. Additionner de l’eau, filtrer la réaction et évaporer les solvants organiques. Extraire le produit de la réaction avec dichlorométhane/eau (DCM/H2O) puis sécher sur MgSC . Éliminer les solvants organiques par évaporation sous vide. Le produit obtenu est utilisé tel quel pour l’étape suivante. Solubiliser le produit obtenu en THF sous agitation durant 12 h avec 1.1 équivalent de NuH (Nucléophile- hydrogène). NuH correspond à R2SH ou NHR2R3 à 70°C. La réaction est arrêtée par addition d’eau et les produits ont été extraits par un système AcOEt/H2O. La phase organique a été séchée sur MgSC et les solvants organiques évaporés sous vide. Les produits cholestan-3-sulfure et cholestan-3-amino dérivés sont purifiés soit par chromatographie sur colonne soit par recristallisation. Le chemin réactionnel pour obtenir
les analogues de la Dendrogénine A sont les mêmes étapes développées pour la synthèse de la Dendrogénine A. Stir cholesterol into tetrahydrofuran (THF) in the presence of NaH for five minutes at 70°C, add paratoluenesulfonic chloride (p-TsCl) and stir the mixture for 4 hours at 70°C. Add water, filter the reaction and evaporate the organic solvents. Extract the reaction product with dichloromethane/water (DCM/H 2 O) then dry over MgSC. Remove organic solvents by evaporation under vacuum. The product obtained is used as it is for the next step. Dissolve the product obtained in THF with stirring for 12 h with 1.1 equivalent of NuH (Nucleophile-hydrogen). NuH corresponds to R 2 SH or NHR2R3 at 70°C. The reaction is stopped by adding water and the products were extracted with an AcOEt/H 2 O system. The organic phase was dried over MgSC and the organic solvents evaporated under vacuum. The cholestan-3-sulphide and cholestan-3-amino derivative products are purified either by column chromatography or by recrystallization. The reaction path to get Dendrogenin A analogs are the same steps developed for the synthesis of Dendrogenin A.
[99] Le produit R2O2S sera obtenu par oxydation de R2S avec des agents d’oxydation tels que le m-CPBA ou H2O2. [99] The product R2O2S will be obtained by oxidation of R2S with oxidizing agents such as m-CPBA or H2O2.
[100] Exemple 4 : Préparation de dérivés ou analogues 30 amino et 30 sulfure de formule [100] Example 4: Preparation of 30 amino and 30 sulfide derivatives or analogs of formula
Les étapes sont présentées ci-dessous :
The steps are shown below:
Dissoudre du cholestérol, ajouter du NEt3 dans du DCM et ajouter du chlorure de mésyle (MsCI) goutte à goutte en solution de DCM à température ambiante durant 1 h. Agiter la réaction durant 12 h, puis évaporer le solvant organique et cristalliser le produit avec du MeOH. Le produit obtenu est un solide de couleur blanche. Le produit obtenu est utilisé pour obtenir le 3p- sulfure et 3[3-azoture dérivés. Le produit obtenu est dissout en DCM puis du TMS-SR2 pour le 3p- sulfure dérivé ou du TMS-N3 pour le 3[3-azoture dérivé est ajouté à la solution. Une addition de BF3*Et2O est réalisée à température ambiante. Ensuite, on agite durant 3 h. Dissolve cholesterol, add NEt 3 in DCM and add mesyl chloride (MsCI) dropwise in DCM solution at room temperature for 1 h. Stir the reaction for 12 h, then evaporate the organic solvent and crystallize the product with MeOH. The product obtained is a white solid. The product obtained is used to obtain the 3p-sulfide and 3[3-azide derivatives. The product obtained is dissolved in DCM then TMS-SR2 for the 3p-sulfide derivative or TMS-N3 for the 3[3-azide derivative is added to the solution. An addition of BF 3 *Et2O is carried out at ambient temperature. Then, it is stirred for 3 h.
[101] Le 3p-azoture est réduit en 3[3-amino par action de LiAIH4 en Et3O et transformé dans les produits de formule (I) avec réaction de R2X (X = Br, Cl ou I) en Et3O (ou pyridine) comme solvant. Le chemin réactionnel pour obtenir les analogues de la Dendrogénine A sont les mêmes étapes développées pour la synthèse de la Dendrogénine A. Le dérivé sulfonyle R2O2S sera obtenu par oxydation de R2S par des agents oxydants usuels. Cette méthode est détaillée dans la littérature « ORGANIC LETTERS; 2009, 11, 3, 567-570, Practical Synthesis of 3/3-Amino-5-cholestene and Related 3/3 -Hal ides Involving i -Steroid and Retro-i-Steroid Rearrangements » (https://d0i.0rg/l 0.1021/ol802343z).
[102] Exemple 5 : Étude de la cytotoxicité du 5a-hydroxy-6B-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3P-fluoro (nommé DX1 11 ) [101] 3p-azide is reduced to 3[3-amino by the action of LiAlH 4 to Et 3 O and transformed into the products of formula (I) with reaction of R 2 X (X = Br, Cl or I) to And 3 O (or pyridine) as solvent. The reaction path to obtain the analogs of Dendrogenin A are the same steps developed for the synthesis of Dendrogenin A. The sulfonyl derivative R2O2S will be obtained by oxidation of R2S by usual oxidizing agents. This method is detailed in the literature “ORGANIC LETTERS; 2009, 11, 3, 567-570, Practical Synthesis of 3/3-Amino-5-cholestene and Related 3/3-Halides Involving i-Steroid and Retro-i-Steroid Rearrangements” (https://d0i.0rg /l0.1021/ol802343z). [102] Example 5: Study of the cytotoxicity of 5a-hydroxy-6B-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-fluoro (named DX111)
[103] Pour cette expérience, un milieu de culture cellulaire a été préparé. Le milieu de culture est constitué d’un milieu Dulbecco's Modified Eagle Medium (DMEM, commercialisé par Westburg sous la référence LO BE12-604F), comprenant 4.5 g/L glucose avec de la L- Glutamine, auquel y est ajouté 10 % de sérum de veau foetal (SVF). Des cellules Neuro2a (neuroblastome murin) sont introduites dans ce milieu de culture. [103] For this experiment, a cell culture medium was prepared. The culture medium consists of Dulbecco's Modified Eagle Medium (DMEM, marketed by Westburg under the reference LO BE12-604F), comprising 4.5 g/L glucose with L-Glutamine, to which 10% serum is added. of fetal calf (SVF). Neuro2a cells (murine neuroblastoma) are introduced into this culture medium.
[104] Il a été ensemencé des boites de 24 puits avec 10 000 cellules Neuro2a par puits. Après 72 heures (h) de culture en condition normale, c’est-à-dire dans un incubateur à une température de 37 °C à 5 % de CO2, nous traitons pendant 48h les cellules Neuro2a avec le 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro et le 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-ol à 100 nM, 1 pM et 10 pM. Un contrôle (CTL) est également réalisé en utilisant le protocole décrit précédemment sans le traitement avec le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3a- fluoro et le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-ol. La survie cellulaire est quantifiée par un test de bleu de trypan avec comptage automatique par l’appareil Biorad TC20 (TC20™ Automated Cell Counter). Le test via le bleu de trypan est basé sur l’intégrité des membranes cellulaire, laquelle est rompue chez les cellules mortes. Le bleu de trypan colore les cellules mortes en bleu. L’appareil de comptage cellulaire Biorad TC20 compte la proportion de cellules bleues et non-bleues, et rapporte au pourcentage de cellules. Les résultats sont représentés figure 1 . La figure 1 illustre en ordonnée le pourcentage de survie cellulaires par rapport au groupe contrôle. [104] 24-well dishes were seeded with 10,000 Neuro2a cells per well. After 72 hours (h) of culture under normal conditions, i.e. in an incubator at a temperature of 37°C at 5% CO2, we treated the Neuro2a cells for 48 hours with 5a-hydroxy-6[ 3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro and 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan -3p-ol at 100 nM, 1 pM and 10 pM. A control (CTL) is also carried out using the protocol described previously without the treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a-fluoro and 5a -hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol. Cell survival is quantified by a trypan blue test with automatic counting by the Biorad TC20 device (TC20™ Automated Cell Counter). The trypan blue test is based on the integrity of cell membranes, which is broken in dead cells. Trypan blue stains dead cells blue. The Biorad TC20 cell counting device counts the proportion of blue and non-blue cells, and reports the percentage of cells. The results are shown in Figure 1. Figure 1 illustrates the ordinate of the percentage of cell survival compared to the control group.
[105] Il est illustré figure 1 que pour 100 nM de traitement au 5a-hydroxy-6[3-[2-(1 H-imidazol- 4-yl)-éthylamino]-cholestan-3p-fluoro le pourcentage de cellule vivante reste inchangé en comparaison au groupe contrôle (CTL). En outre, pour des concentrations de 1 pM et 10 pM, le pourcentage de survie cellulaire est de 75 % et 30 %. Il est également observé une activité similaire entre les deux composés testés. [105] It is illustrated in Figure 1 that for 100 nM of treatment with 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro the percentage of living cells remains unchanged compared to the control group (CTL). Furthermore, for concentrations of 1 pM and 10 pM, the percentage of cell survival is 75% and 30%. A similar activity is also observed between the two compounds tested.
En conclusion, on observe une activité cytotoxique du composé 5a-hydroxy-6[3-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3p-fluoro de formule (I) envers les cellules tumorales Neuro2a pour des concentrations en 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3a-fluoro de 1 pM et 10 pM. In conclusion, cytotoxic activity of the 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro compound of formula (I) is observed against tumor cells Neuro2a for 5α-hydroxy-6β-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3α-fluoro concentrations of 1 μM and 10 μM.
[106] Exemple 6 : Effet du 5a-hvdroxy-6B-[2-(1 H-imidazol-4-yl)-éthylamino1-cholestan-3P- fluoro sur la viabilité des cellules MCF-7
[107] Un test de viabilité cellulaires a été réalisé sur des cellules tumorales mammaires MCF-7 (Michigan Cancer Foundation-7) surexprimant HER2 (cellules ER(+)). [106] Example 6: Effect of 5a-hvdroxy-6B-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-fluoro on the viability of MCF-7 cells [107] A cell viability test was performed on MCF-7 breast tumor cells (Michigan Cancer Foundation-7) overexpressing HER2 (ER(+) cells).
Les cellules MCF-7 sont dans un milieu de culture cellulaire identique à l’exemple 5 et sont ensemencées dans des plaques 12 puits à 50 000 cellules par puits. 24 heures après ensemencement, les cellules sont traitées par le solvate véhicule comprenant de l’eau et de l’éthanol avec un rapport 1%o d’éthanol, le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-fluoro et le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-ol à 1 , 2.5 ou 5 pM. Les cellules sont observées au microscope inversé et photographiées via la caméra du microscope à 24 h et 48 h. Les modifications morphologiques des cellules à 1 pM sont très faibles. On observe uniquement quelques vésicules blanches, traduisant le début du phénomène d’autophagie, engendrant la mort cellulaires après 24 heures de traitement avec le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3 -fluoro et le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-ol. Les effets sont davantage marqués à 2.5 pM et 5 pM avec une augmentation du nombre de cellules mortes. En effet, il est observé après 24 h de traitement au 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3 -fluoro à 2,5 pM de nombreuses vésicules blanches et des cellules qui se décrochent. Après 24 h de traitement au 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3 -fluoro à 5 pM, 99 % des cellules observées sont surnageantes, traduisant une mort cellulaire et 1 % des cellules sont adhérentes et présentent des vésicules blanches. On observe après 48 h de traitement au 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3 -fluoro à 2,5 pM un effet cytostatique plus important qu’à 24 h et davantage de cellules qui s’arrondissent, traduisant la mort cellulaires. L’effet cytostatique est illustré par une inhibition de la prolifération cellulaire. Après 48 h de traitement au 5a-hydroxy-6p-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3 -fluoro à 5 pM, toutes les cellules sont surnageantes. En comparaison avec le traitement avec le 5a-hydroxy-6p-[2-(1 H-imidazol- 4-yl)-éthylamino]-cholestan-3p-ol, le traitement avec le 5a-hydroxy-6p-[2-(1 H-imidazol-4- yl)-éthylamino]-cholestan-3p-fluoro présente un effet supérieur ou égale après 24 h d’observation et similaire après 48 h d’observation. The MCF-7 cells are in a cell culture medium identical to Example 5 and are seeded in 12-well plates at 50,000 cells per well. 24 hours after seeding, the cells are treated with the solvate vehicle comprising water and ethanol with a 1% ratio of ethanol, 5a-hydroxy- 6p- [2-(1 H-imidazol-4 -yl)-ethylamino]-cholestan-3p-fluoro and 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol at 1, 2.5 or 5 μM. The cells are observed under an inverted microscope and photographed via the microscope camera at 24 h and 48 h. The morphological changes of the cells at 1 µM are very slight. Only a few white vesicles are observed, reflecting the beginning of the autophagy phenomenon, causing cell death after 24 hours of treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]- cholestan-3-fluoro and 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol. The effects are more marked at 2.5 pM and 5 pM with an increase in the number of dead cells. Indeed, it is observed after 24 hours of treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-fluoro at 2.5 pM numerous white vesicles and collapsing cells. After 24 h of treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-fluoro at 5 pM, 99% of the cells observed are supernatants, indicating cell death and 1% of the cells are adherent and show white vesicles. After 48 h of treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-fluoro at 2.5 pM, a greater cytostatic effect is observed than at 24 h and more cells rounding out, indicating cell death. The cytostatic effect is illustrated by an inhibition of cell proliferation. After 48 h of treatment with 5α-hydroxy-6β-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-fluoro at 5 μM, all the cells are supernatants. In comparison to treatment with 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol, treatment with 5a-hydroxy-6p-[2-( 1 H-imidazol-4-yl)-ethylamino]-cholestan-3β-fluoro shows greater or equal effect after 24 hours observation and similar after 48 hours observation.
[108] La viabilité cellulaire est mesurée par marquage MTT à 48 heures. Ce test est basé sur l’utilisation du sel de tétrazolium MTT (bromure de 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyl tétrazolium). Le tétrazolium est réduit par la succinate déshydrogénase mitochondriale des cellules vivantes actives, en formazan, précipité de couleur violette. La quantité de précipité formé est proportionnelle à la quantité de cellules vivantes mais également à l'activité métabolique de chaque cellule. Ainsi, un simple dosage de la densité optique à 540 nm par spectroscopie permet de connaître la quantité relative de cellules
vivantes et actives métaboliquement. Après 48 heures, le milieu est aspiré, les cellules lavées au tampon phosphate salin (PBS) puis incubées avec du MTT (0.5 mg/ml dans du PBS) pendant environ 2 heures. La solution de MTT est aspirée puis les cristaux violets sont solubilisés dans du diméthylsulfoxyde (DMSO). La DO (densité optique) est mesurée à 540 nm. [108] Cell viability is measured by MTT labeling at 48 hours. This test is based on the use of the tetrazolium salt MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide). Tetrazolium is reduced by active living cell mitochondrial succinate dehydrogenase to formazan, a violet-colored precipitate. The quantity of precipitate formed is proportional to the quantity of living cells but also to the metabolic activity of each cell. Thus, a simple assay of the optical density at 540 nm by spectroscopy makes it possible to know the relative quantity of cells alive and metabolically active. After 48 hours, the medium is aspirated, the cells washed with phosphate buffered saline (PBS) then incubated with MTT (0.5 mg/ml in PBS) for approximately 2 hours. The MTT solution is aspirated and then the purple crystals are dissolved in dimethyl sulfoxide (DMSO). The OD (optical density) is measured at 540 nm.
[109] Les résultats de ce test sont présentés figure 2. La figure 2 illustre en ordonnée le pourcentage de viabilité cellulaires par rapport au groupe contrôle. Le groupe contrôle est réalisé de manière similaire aux groupes étudiés sans l’ajout des molécules étudiées dans le présent texte. En comparaison au contrôle, il est mesuré une diminution dose dépendante de la viabilité cellulaire en MTT pour le 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-fluoro et le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-ol. Pour une concentration de 5 pM, la viabilité est proche de 0 %. Cela traduit une capacité de destruction de cellules tumorales mammaires par le composé de formule (I). Ces résultats sont concordant avec les observations réalisées à 24 h et 48 h précitées. [109] The results of this test are shown in Figure 2. Figure 2 illustrates the ordinate of the percentage of cell viability compared to the control group. The control group is made in a similar way to the groups studied without the addition of the molecules studied in this text. In comparison to the control, a dose-dependent decrease in cell viability in MTT is measured for 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-fluoro and 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol. For a concentration of 5 pM, the viability is close to 0%. This reflects a capacity for destruction of mammary tumor cells by the compound of formula (I). These results are consistent with the observations made at 24 h and 48 h mentioned above.
[110] Exemple 7 : Effet du 5a-hvdroxy-6P-[2-(1 H-imidazol-4-yl)-éthylamino1-cholestan-3B- fluoro sur l’activité de la Cholestérol Epoxyde Hydrolase (ChEH) dans des cellules MCF- 7 [110] Example 7: Effect of 5α-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3B-fluoro on the activity of Cholesterol Epoxide Hydrolase (ChEH) in cells MCF-7
[11 1] Les composés 5,6a-epoxycholesterol (5,6a-EC) et 5,6p-epoxycholesterol (5,6p-EC) sont des oxystérols impliqués dans la pharmacologie anticancéreuse du tamoxifène, un médicament antitumoral largement utilisé. Ils sont tous deux métabolisés en cholestane- 3p,5a,6p-triol (CT) par l'enzyme cholestérol-5,6-époxyde hydrolase (ChEH), et le CT est métabolisé par l’enzyme HSD11 B2 (1 ip-Hydroxystéroïde déshydrogénase 2) en 6-oxo- cholestan-3p,5a-diol (OCDO), un oncostérone promoteur de tumeur. [11 1] The compounds 5,6a-epoxycholesterol (5,6a-EC) and 5,6p-epoxycholesterol (5,6p-EC) are oxysterols implicated in the anticancer pharmacology of tamoxifen, a widely used antitumor drug. They are both metabolized to cholestane-3p,5a,6p-triol (CT) by the enzyme cholesterol-5,6-epoxide hydrolase (ChEH), and CT is metabolized by the enzyme HSD11 B2 (1 ip-Hydroxysteroid dehydrogenase 2) to 6-oxo-cholestan-3p,5a-diol (OCDO), a tumor-promoting oncosterone.
[112] L’expérience suivante a pour but de démontrer la capacité du 5a-hydroxy-6p-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3a-fluoro à bloquer la ChEH et donc à limiter la métabolisation d’oncostérone, un métabolite promoteur de tumeur. [112] The following experiment aims to demonstrate the ability of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a-fluoro to block ChEH and therefore to limit the metabolism of oncosterone, a tumor promoting metabolite.
[113] Des cellules MCF-7 sont dans un milieu de culture cellulaire identique à l’exemple 5 et sont ensemencées dans des plaques 6 puits à 150 000 cellules par puits avec 3 puits par condition de traitement. 24 h après ensemencement, les cellules MCF-7 sont traitées par du [14C]5,6a-EC (solution mère 1000X : 0.6 mM ; 20 pCi/pmol ; concentration finale 0.6 pM) seul ou en association avec du Tamoxifène (tam). Le Tamoxifène est utilisé en tant que témoin positif du 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3a-
fluoro et du 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-ol (1 pM pour toutes les molécules). [113] MCF-7 cells are in a cell culture medium identical to Example 5 and are seeded in 6-well plates at 150,000 cells per well with 3 wells per treatment condition. 24 h after seeding, the MCF-7 cells are treated with [ 14 C]5,6a-EC (stock solution 1000X: 0.6 mM; 20 pCi/pmol; final concentration 0.6 pM) alone or in combination with Tamoxifen (tam ). Tamoxifen is used as a positive control for 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a- fluoro and 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol (1 µM for all molecules).
[114] Après 24 heures de traitement, les milieux sont collectés et des extraits lipidiques sont préparés à partir des culots cellulaires par extraction avec 100 pL de chloroforme, 400 pL de méthanol et 300 pL d’eau. Les extraits lipidiques sont analysés par chromatographie sur couche mince (CCM) en utilisant l’acétate d'éthyle (EtOAc) en tant qu’éluant. L’analyse est réalisée à l’aide d’un lecteur de plaque puis par autoradiographie. Les résultats sont présentés figure 3. Il est observé la métabolisation quasi-totale de l’époxyde en CT et OCDO (puits 2 et 4) et une inhibition totale de l’activité ChEH par le Tamoxifène et presque totale (trace de CT) par le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3a- fluoro. Des résultats similaires sont observés avec le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-ol. [114] After 24 hours of treatment, the media are collected and lipid extracts are prepared from the cell pellets by extraction with 100 pL of chloroform, 400 pL of methanol and 300 pL of water. Lipid extracts are analyzed by thin layer chromatography (TLC) using ethyl acetate (EtOAc) as eluent. The analysis is carried out using a plate reader and then by autoradiography. The results are presented in figure 3. It is observed the almost total metabolism of the epoxide in CT and OCDO (wells 2 and 4) and a total inhibition of ChEH activity by Tamoxifen and almost total (trace of CT) by 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a-fluoro. Similar results are observed with 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol.
[115] En conclusion, le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3a- fluoro possède une activité inhibitrice de la ChEH similaire au 5a-hydroxy-6p-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3p-ol. [115] In conclusion, 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3a-fluoro possesses ChEH inhibitory activity similar to 5a-hydroxy-6p- [2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ol.
[116] Exemple 8 : Synthèse du composé de formule (I) 5a-hvdroxy-66-[2-(1 H-imidazol-4-vD- éthylaminol-cholestan-36-méthoxyle (nommé DX103)
[116] Example 8: Synthesis of the compound of formula (I) 5a-hvdroxy-66-[2-(1H-imidazol-4-vD-ethylaminol-cholestan-36-methoxyl (named DX103)
[117] Une première étape consiste à mettre en solution 4.0 grammes (g) de cholestérol (10.3 mmol) dans 20 millilitres (ml) de tétrahydrofurane (THF). 0.80 g de NaH (60 % dans l’huile, 20.0 mmol) a été additionné et laissé réagir pour 30 minutes à 60°C, puis 1.8 ml de iodométhane (28.9 mmol) ont été ajoutés. Le mélange ainsi obtenu a été laissé à 60°C pendant la nuit, à savoir environ 10 h. Après refroidissement de la solution, la réaction a été neutralisée par addition de 20 ml d’eau. Le mélange a été filtré et le THF évaporé sous vide. Le mélange a été transféré dans une ampoule à décanter et la phase aqueuse a été extraite trois fois avec de l’acétate d’éthyle. Les phases organiques ainsi obtenues ont été combinées et séchées sur du MgSC puis évaporées permettant l’obtention d’une huile. L’huile obtenue a été dissoute dans 2 ml de EtsO et du MeOH a été ajouté jusqu’à la formation d’un précipité blanc. La poudre a été filtrée, lavée avec du MeOH froid et séchée. Une poudre blanche de 3.40 g (correspondent à 82 % de rendement) de cholestan-3p- méthoxyle a été ainsi obtenue.
[118] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.36 (s, 1 H), 3.35 (s, 3H), 3.09 - 3.02 (g, 1 H), 2.40 - 2.36 ( , 1 H), 2.18 - 2.13 (t, 1 H), 2.03 - 1 .81 (m, 5H), 1.60 - 1.00 (m, 24H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.68 (s, 3H). [117] A first step consists in dissolving 4.0 grams (g) of cholesterol (10.3 mmol) in 20 milliliters (ml) of tetrahydrofuran (THF). 0.80 g of NaH (60% in oil, 20.0 mmol) was added and left to react for 30 minutes at 60° C., then 1.8 ml of iodomethane (28.9 mmol) were added. The mixture thus obtained was left at 60° C. overnight, namely about 10 h. After cooling the solution, the reaction was quenched by adding 20 ml of water. The mixture was filtered and the THF evaporated under vacuum. The mixture was transferred to a separating funnel and the aqueous phase was extracted three times with ethyl acetate. The organic phases thus obtained were combined and dried over MgSC then evaporated, allowing an oil to be obtained. The oil obtained was dissolved in 2 ml of EtsO and MeOH was added until a white precipitate formed. The powder was filtered, washed with cold MeOH and dried. A white powder of 3.40 g (corresponds to 82% yield) of cholestan-3p-methoxy was thus obtained. [118] 1H -NMR (500MHz, CDCI3): 5 (ppm) 5.36 (s, 1H), 3.35 (s, 3H), 3.09 - 3.02 (g, 1H), 2.40 - 2.36 ( , 1H ), 2.18 - 2.13 (t, 1H), 2.03 - 1.81 (m, 5H), 1.60 - 1.00 (m, 24H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.68 (s, 3H).
[119] La deuxième étape consiste à synthétiser à partir du cholestan-3p-méthoxyle le composé 5,6a-epoxy-cholestan-3p-méthoxyle de la manière suivante :
[119] The second step consists in synthesizing from cholestan-3p-methoxyl the compound 5,6a-epoxy-cholestan-3p-methoxyl as follows:
[120] 1 .80 g d’acide méta-chloro-peroxybenzoïque (8.90 mmol) ont été dissous dans 70 ml de dichlorométhane et ajouté goutte à goutte dans un mélange de 2.50 g de cholestan- 3p-méthoxyle (6.24 mmol) dissous dans 20 ml de dichlorométhane. Le mélange ainsi obtenu a été mis sous agitation et maintenu à température ambiante durant trois heures. Le mélange obtenu a été lavé avec une solution aqueuse de NasSsOs à 10 % en poids, une solution saturée de NaHCOs et une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention d’une huile transparente et visqueuse. 5 ml de EtsO ont été ajouté pour dissoudre l’huile, puis 25 ml d’EtOH ont été additionné et le mélange a été chauffé jusqu’à ébullition pour 3 fois et enfin mis à 0°C pendant la nuit pour favoriser la précipitation. Une poudre blanche a été filtrée, lavée avec du MeOH froid et séché ; 1.73 g, correspondant à 67 % (avec un excès énantiomérique > 90 %) de rendement de 5,6a- epoxy-cholestan-3p-méthoxyle a été ainsi obtenue. [120] 1.80 g of meta-chloro-peroxybenzoic acid (8.90 mmol) were dissolved in 70 ml of dichloromethane and added dropwise to a mixture of 2.50 g of cholestan-3p-methoxy (6.24 mmol) dissolved in 20 ml of dichloromethane. The mixture thus obtained was stirred and maintained at ambient temperature for three hours. The mixture obtained was washed with an aqueous solution of NasSsOs at 10% by weight, a saturated solution of NaHCOs and a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and allows obtaining a transparent and viscous oil. 5 mL of EtsO was added to dissolve the oil, then 25 mL of EtOH was added and the mixture was heated to boiling for 3 times and finally put at 0°C overnight to promote precipitation. A white powder was filtered, washed with cold MeOH and dried; 1.73 g, corresponding to 67% (with an enantiomeric excess >90%) of yield of 5,6a-epoxy-cholestan-3p-methoxy was thus obtained.
[121] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 3.45 - 3.39 (m, 1 H), 3.33 (s, 3H), 2.90 - 2.89 (d, 1 H), 2.00 - 0.94 (m, 31 H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.60 (s, 3H). [121] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 3.45 - 3.39 (m, 1 H), 3.33 (s, 3H), 2.90 - 2.89 (d, 1 H), 2.00 - 0.94 ( m, 31H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.60 (s, 3H).
[122] La troisième étape consiste à synthétiser le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-méthoxyle (DX103 forme basique) de la manière suivante :
0.81 g d’histamine (7.30 mmol) sous sa forme basique a été ajoutée à une solution butanolique de 10 ml comprenant 1.50 g du composé 5,6a-epoxy-cholestan-3p-méthoxyle (3.62 mmol) sous agitation. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures. [122] The third step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyl (DX103 base form) as follows: 0.81 g of histamine (7.30 mmol) in its basic form was added to a 10 ml butanol solution comprising 1.50 g of the 5,6a-epoxy-cholestan-3p-methoxy compound (3.62 mmol) with stirring. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 5,6a-epoxy-cholestan-3p-méthoxyle. The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 5,6a-epoxy-cholestan-3p-methoxy.
Après refroidissement, le mélange a été dilué dans 10 ml de méthyl tert-butyle éther. La phase organique a été lavée par 2 fois avec 10 ml d’eau puis une fois avec 10 ml d’une solution saturée de NaCI. After cooling, the mixture was diluted in 10 ml of methyl tert-butyl ether. The organic phase was washed twice with 10 ml of water and then once with 10 ml of a saturated NaCl solution.
La phase organique a été séchée sur du MgSC anhydre. Le mélange a été purifié par colonne chromatographique sur un automate de purification. L’éluant utilisé est un mélange Acétate d’éthyle-Méthanol en rapport 90-10 %. Une poudre blanche de 1.32 g de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-méthoxy a été obtenue. Le rendement final de la réaction est de 69 % avec une pureté supérieure à 95 % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). The organic phase was dried over anhydrous MgSC. The mixture was purified by column chromatography on a purification automaton. The eluent used is an ethyl acetate-methanol mixture in a ratio of 90-10%. A white powder of 1.32 g of 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxy was obtained. The final yield of the reaction is 69% with a purity greater than 95% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
[123] 1H-NMR (500 MHz, MeOD-4c : 5 (ppm) 7.62 (s, 1 H), 6.88 (s, 1 H), 3.71 - 3.65 (m, 1 H), 3.34 (s, 3H), 2.98 - 2.97 (d, 1 H), 2.78 - 2.77 (m, 3H), 2.45 (s, 1 H), 2.03 - 2.00 (m, 1 H), 1 .94 - 1 .83 (m, 3H), 1.65 - 1 .01 (m, 27H), 0.95 - 0.94 (d, 3H), 0.91 - 0.89 (d, 6H), 0.71 (s, 3H). [123] 1H -NMR (500 MHz, MeOD-4c: 5 (ppm) 7.62 (s, 1H), 6.88 (s, 1H), 3.71 - 3.65 (m, 1H), 3.34 (s, 3H ), 2.98 - 2.97 (d, 1H), 2.78 - 2.77 (m, 3H), 2.45 (s, 1H), 2.03 - 2.00 (m, 1H), 1.94 - 1.83 (m, 3H ), 1.65 - 1.01 (m, 27H), 0.95 - 0.94 (d, 3H), 0.91 - 0.89 (d, 6H), 0.71 (s, 3H).
[124] Exemple 9 : Préparation d’un sel dilactate du composé 5a-hvdroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino1-cholestan-3P-méthoxyle (DX103 forme dilactate) [124] Example 9: Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-methoxyl (DX103 dilactate form)
[125] Un sel dilactate du composé 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-méthoxyle a été préparé de la manière suivante :
[125] A dilactate salt of the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxy was prepared as follows:
[126] 21.0 mg d’acide lactique (1.89 mmol) a été ajouté à une solution de 0.50 g de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-méthoxyle (0.95 mmol) dans 15 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température
ambiante 3 heures. Une évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche de 0.52 g de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-méthoxyle dilactate. [126] 21.0 mg of lactic acid (1.89 mmol) was added to a solution of 0.50 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- methoxyl (0.95 mmol) in 15 ml of anhydrous ethanol with stirring. Stirring was maintained at temperature ambient 3 hours. Vacuum evaporation of the organic solvent makes it possible to obtain a white powder of 0.52 g of 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyldilactate.
[127] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.61 (s, 1 H), 6.84 (s, 1 H), 3.93 - 3.89 (q, 2H), 3.62 - 3.57 (m, 1 H), 3.39 - 3.09 (m, 8H), 3.21 - 3.16 (m, 1 H), 2.84 - 2.74 (m, 3H), 1 .91 - 1 .81 (m, 2H), 1 .70 - 0.79 (m, 31 H), 0.73 - 0.72 (d, 3H), 0.68 - 0.66 (d, 6H), 0.56 (s, 3H). [127] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.61 (s, 1 H), 6.84 (s, 1 H), 3.93 - 3.89 (q, 2H), 3.62 - 3.57 (m , 1H), 3.39 - 3.09 (m, 8H), 3.21 - 3.16 (m, 1H), 2.84 - 2.74 (m, 3H), 1.91 - 1.81 (m, 2H), 1.70 - 0.79 (m, 31H), 0.73 - 0.72 (d, 3H), 0.68 - 0.66 (d, 6H), 0.56 (s, 3H).
[128] Exemple 10 : Synthèse du composé de formule (I) 5a-hvdroxy-6P-[2-(1 H-imidazol-4- yl)-éthylamino1-cholestan-3P-éthoxyle (nommé DX105) [128] Example 10: Synthesis of the compound of formula (I) 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-ethoxyl (named DX105)
La première étape est une synthèse du composé cholestan-3p-éthoxy comprenant les étapes suivantes :
The first step is a synthesis of the compound cholestan-3p-ethoxy comprising the following steps:
4.00 g de cholestérol (10.3 mmol) a été mis en solution dans 20 ml de THF. 0.82 g de NaH (60 % dans l’huile, 20.0 mmol) a été additionné et laissé réagir pour 30 minutes à 60°C, puis 1 .9 ml de iodoéthane (28.9 mmol) a été ajouté. Le mélange ainsi obtenu a été laissé à 60°C pendant la nuit. Après refroidissement de la solution, la réaction a été neutralisée par addition de 20 ml d’eau. Le mélange a été filtré et le THF évaporé sous vide. Le mélange a été transféré dans une ampoule à décanter et la phase aqueuse a été extraite trois fois avec d’acétate d’éthyle. Les phases organiques ainsi obtenues ont été combinées et séchées sur du MgSC puis évaporées permettant l’obtention d’une huile. L’huile obtenue a été dissoute dans 2 ml de Et2O et du MeOH a été ajouté jusqu’à la formation d’un précipité blanc. La poudre a été filtrée, lavée avec du MeOH froid et séché. Une poudre blanche de 2.12 g (correspondent à 49 % de rendement) de cholestan-3p- éthoxyle a été ainsi obtenue. 4.00 g of cholesterol (10.3 mmol) was dissolved in 20 ml of THF. 0.82 g of NaH (60% in oil, 20.0 mmol) was added and left to react for 30 minutes at 60° C., then 1.9 ml of iodoethane (28.9 mmol) was added. The resulting mixture was left at 60°C overnight. After cooling the solution, the reaction was quenched by adding 20 ml of water. The mixture was filtered and the THF evaporated under vacuum. The mixture was transferred to a separating funnel and the aqueous phase was extracted three times with ethyl acetate. The organic phases thus obtained were combined and dried over MgSC then evaporated, allowing an oil to be obtained. The oil obtained was dissolved in 2 ml of Et 2 O and MeOH was added until a white precipitate formed. The powder was filtered, washed with cold MeOH and dried. A white powder of 2.12 g (corresponds to 49% yield) of cholestan-3p-ethoxy was thus obtained.
[129] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.35 (s, 1 H), 3.53-3.51 (q, 2H), 3.17 - 3.14 (m, 1 H), 2.38 - 2.35 ( , 1 H), 2.22 - 2.17 (t, 3H), 2.02 - 1.79 (m, 5H), 1.60 - 0.94 (m, 27H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H).
[130] La deuxième étape consiste à synthétiser à partir du cholestan-3p-éthoxyle le composé 5,6a-epoxy-cholestan-3p-éthoxyle de la manière suivante :
[129] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.35 (s, 1 H), 3.53-3.51 (q, 2H), 3.17 - 3.14 (m, 1 H), 2.38 - 2.35 ( , 1H), 2.22 - 2.17 (t, 3H), 2.02 - 1.79 (m, 5H), 1.60 - 0.94 (m, 27H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H). [130] The second step consists in synthesizing from cholestan-3p-ethoxy the compound 5,6a-epoxy-cholestan-3p-ethoxy in the following way:
[131] 1.44 g d’acide méta-chloro-peroxybenzoïque (correspondant à 6.43 mmol) ont été dissous dans 50 ml de dichlorométhane et ajouté goutte à goutte dans un mélange de 2.0 g de cholestan-3p-éthoxyle (4.82 mmol) dissous dans 10 ml de dichlorométhane. Le mélange ainsi obtenu a été mis sous agitation et maintenu à température ambiante durant 3 heures. Le mélange obtenu a été lavé avec une solution aqueuse de NasSsOs à 10 % en poids, une solution saturée de NaHCO3 et une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention d’une huile transparente et visqueuse. 5 ml de Et2O ont été ajouté pour dissoudre l’huile, puis 25 ml d’EtOH ont été additionné et le mélange a été chauffé jusqu’à ébullition pour 3 fois et puis mis à 0°C pendant la nuit pour favoriser la précipitation. Une poudre blanche a été filtrée, lavée avec du MeOH froid et séchée : 0.72 g, correspondant à 35 % (avec un excès énantiomérique >90 %) de rendement de 5,6a-epoxy-cholestan-3p-éthoxy a été ainsi obtenu. [131] 1.44 g of meta-chloro-peroxybenzoic acid (corresponding to 6.43 mmol) were dissolved in 50 ml of dichloromethane and added dropwise to a mixture of 2.0 g of cholestan-3p-ethoxyl (4.82 mmol) dissolved in 10 ml of dichloromethane. The mixture thus obtained was stirred and kept at ambient temperature for 3 hours. The mixture obtained was washed with an aqueous solution of NasSsOs at 10% by weight, a saturated solution of NaHCO 3 and a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and allows a transparent and viscous oil to be obtained. 5 mL of Et 2 O was added to dissolve the oil, then 25 mL of EtOH was added and the mixture was heated to boiling for 3 times and then set at 0°C overnight to promote precipitation. A white powder was filtered, washed with cold MeOH and dried: 0.72 g, corresponding to 35% (with an enantiomeric excess >90%) of yield of 5,6a-epoxy-cholestan-3p-ethoxy was thus obtained.
[132] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 3.55 - 3.46 (m, 3H), 2.89 - 2.88 (d, 1 H), 2.04 - 0.93 (m, 34H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.60 (s, 3H). [132] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 3.55 - 3.46 (m, 3H), 2.89 - 2.88 (d, 1H), 2.04 - 0.93 (m, 34H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.60 (s, 3H).
[133] La troisième étape consiste à synthétiser le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-éthoxy (DX105 sous forme basique) de la manière suivante :
[133] The third step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy (DX105 in basic form) as follows:
[134] 0.31 g d’histamine sous sa forme basique (correspondent à 2.74 mmol) a été ajouté à une solution butanolique de 5 ml comprenant 0.51 g du composé 5,6a-epoxy-cholestan- 3p-éthoxyle à 1.18 mmol sous agitation. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures.
L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 5,6a-epoxy-cholestan-3p-éthoxyle. [134] 0.31 g of histamine in its basic form (corresponds to 2.74 mmol) was added to a 5 ml butanol solution comprising 0.51 g of the 5,6a-epoxy-cholestan-3p-ethoxy compound at 1.18 mmol with stirring. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours. The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 5,6a-epoxy-cholestan-3p-ethoxy.
Après refroidissement, le mélange a été dilué dans 5 ml de méthyl tert-butyle éther. La phase organique a été lavée par 2 fois avec 5 ml d’eau puis une fois avec 5 ml d’une solution saturée de NaCI. After cooling, the mixture was diluted in 5 ml of methyl tert-butyl ether. The organic phase was washed twice with 5 ml of water then once with 5 ml of a saturated NaCl solution.
La phase organique a été séchée sur du MgSC anhydre. Le mélange a été purifié par colonne chromatographique sur un automate de purification. L’éluant utilisé est un mélange Acétate d’éthyle-Méthanol en rapport 90-10. Une poudre blanche de 0.28 g de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-éthoxyle a été obtenue. Le rendement final de la réaction est de 44 % avec une pureté supérieure à 97 % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). The organic phase was dried over anhydrous MgSC. The mixture was purified by column chromatography on a purification automaton. The eluent used is an ethyl acetate-methanol mixture in a 90-10 ratio. A white powder of 0.28 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy was obtained. The final yield of the reaction is 44% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
[135] 1H-NMR (500 MHz, MeOD-4c : 5 (ppm) 7.62 (s, 1 H), 6.89 (s, 1 H), 3.82 - 3.76 (m, 1 H), 3.57 - 3.52 (q, 2H), 3.05 - 3.00 (m, 1 H), 2.85 - 2.80 (m, 3H), 2.50 (s, 1 H), 2.03 - 1 .83 (m, 5H), 1 .65 - 1 .51 (m, 7H), 1 .42 - 1 .01 (m, 22H), 0.96 - 0.94 (d, 3H), 0.91 - 0.89 (d, 6H), 0.72 (s, 3H). [135] 1 H-NMR (500 MHz, MeOD-4c: 5 (ppm) 7.62 (s, 1 H), 6.89 (s, 1 H), 3.82 - 3.76 (m, 1 H), 3.57 - 3.52 (q , 2H), 3.05 - 3.00 (m, 1H), 2.85 - 2.80 (m, 3H), 2.50 (s, 1H), 2.03 - 1.83 (m, 5H), 1.65 - 1.51 ( m, 7H), 1.42 - 1.01 (m, 22H), 0.96 - 0.94 (d, 3H), 0.91 - 0.89 (d, 6H), 0.72 (s, 3H).
[136] Exemple 11 : Préparation d’un sel dilactate du composé 5a-hvdroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3P-éthoxyle (DX105 sous forme dilactate) [136] Example 11: Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-ethoxyl (DX105 in dilactate form)
[137] Un sel dilactate du composé 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-éthoxyle a été préparé de la manière suivante :
[137] A dilactate salt of the compound 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxy was prepared as follows:
[138] 166.2 mg d’acide lactique (1.85 mmol) a été ajouté à une solution de 0.50 g de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-éthoxyle (0.92 mmol) dans 5 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température ambiante pour 3 heures. Une évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche de 0.20 g de 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan- 3p-éthoxyle dilactate.
[139] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.61 (s, 1 H), 6.84 (s, 1 H), 3.92 - 3.89 (q, 2H), 3.60 - 3.57 (m, 1 H), 3.39 - 3.09 (m, 7H), 2.84 - 2.74 (m, 3H), 1.91 - 1 .81 (m, 2H), 1 .70 - 0.79 (m, 34H), 0.73 - 0.72 (d, 3H), 0.67 - 0.65 (d, 6H), 0.54 (s, 3H). [138] 166.2 mg of lactic acid (1.85 mmol) was added to a solution of 0.50 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- ethoxylate (0.92 mmol) in 5 ml of anhydrous ethanol with stirring. Stirring was maintained at room temperature for 3 hours. Vacuum evaporation of the organic solvent yields a white powder of 0.20 g of 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxyl dilated. [139] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.61 (s, 1 H), 6.84 (s, 1 H), 3.92 - 3.89 (q, 2H), 3.60 - 3.57 (m , 1H), 3.39 - 3.09 (m, 7H), 2.84 - 2.74 (m, 3H), 1.91 - 1.81 (m, 2H), 1.70 - 0.79 (m, 34H), 0.73 - 0.72 (d , 3H), 0.67 - 0.65 (d, 6H), 0.54 (s, 3H).
[140] Exemple 12 : Synthèse du composé de formule (I) 5a-hvdroxy-6P-[2-(1 H-imidazol-4- yl)-éthylamino1-cholestan-3P-octanoxyle (nommé DX115) [140] Example 12: Synthesis of the compound of formula (I) 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-octanoxyl (named DX115)
La première étape est une synthèse du composé cholestan-3p-octanoxyle comprenant les étapes suivantes :
The first step is a synthesis of the cholestan-3p-octanoxyl compound comprising the following steps:
4.00 g de cholestérol a été mis en solution dans 20 ml de tétrahydrofurane. 0.84 g de NaH a été additionné et laissé réagir pour 30 minutes à 60°C, puis 3.0 g d’isooctane ont été ajoutés. Le mélange ainsi obtenu a été laissé à 60°C pendant la nuit Après refroidissement de la solution, la réaction a été neutralisée par addition de 20 ml d’eau. Le mélange a été filtré et le THF évaporé sous vide. Le mélange a été transféré dans une ampoule à décanter et la phase aqueuse a été extraite trois fois avec de l’acétate d’éthyle. Les phases organiques ainsi obtenues ont été combinées et séchées sur du MgSC puis évaporées permettant l’obtention d’une huile. 4.00 g of cholesterol was dissolved in 20 ml of tetrahydrofuran. 0.84 g of NaH was added and allowed to react for 30 minutes at 60°C, then 3.0 g of isooctane were added. The mixture thus obtained was left at 60°C overnight. After cooling the solution, the reaction was neutralized by adding 20 ml of water. The mixture was filtered and the THF evaporated under vacuum. The mixture was transferred to a separating funnel and the aqueous phase was extracted three times with ethyl acetate. The organic phases thus obtained were combined and dried over MgSC then evaporated to obtain an oil.
L’huile obtenue a été dissoute dans 2 ml de Et2O et du MeOH a été ajouté jusqu’à formation d’un précipité blanc. La poudre a été filtrée, lavée avec du MeOH froid et séchée. Une poudre blanche de 2.5 g (correspondent à 48 %) de cholestan-3p-octanoxyle a été ainsi obtenue. The oil obtained was dissolved in 2 ml of Et 2 O and MeOH was added until a white precipitate formed. The powder was filtered, washed with cold MeOH and dried. A white powder of 2.5 g (corresponds to 48%) of cholestan-3p-octanoxyl was thus obtained.
[141] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.35 (s, 1 H), 3.45 - 3.43 (q, 2H), 3.15 - 3.10 (q, 1 H), 2.37 - 2.35 (d, 1 H), 2.21 - 2.16 (t, 1 H), 2.02 - 1 .95 (m, 2H), 1.90 - 1.84 (m, 3H), 1.58 - 0.97 (m, 39H), 0.92 - 0.91 (d, 3H), 0.87 - 0.86 (dd, 6H), 0.67 (s, 3H). [141] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.35 (s, 1 H), 3.45 - 3.43 (q, 2H), 3.15 - 3.10 (q, 1 H), 2.37 - 2.35 ( d, 1H), 2.21 - 2.16 (t, 1H), 2.02 - 1.95 (m, 2H), 1.90 - 1.84 (m, 3H), 1.58 - 0.97 (m, 39H), 0.92 - 0.91 (d , 3H), 0.87 - 0.86 (dd, 6H), 0.67 (s, 3H).
[142] La deuxième étape consiste à synthétiser à partir du cholestan-3[3-octanoxyle le composé 5,6a-époxycholestan-3p-octanoxyle de la manière suivante :
[142] The second step consists in synthesizing from cholestan-3[3-octanoxyl the compound 5,6a-epoxycholestan-3p-octanoxyl as follows:
0.90 g d’acide méta-chloro-peroxybenzoïque (correspondent à 4.0 mmol) ont été dissous
dans 40 ml de dichlorométhane et ajouté goutte à goutte dans un mélange de 1 .50 g de cholestan-3p-octanoxyle à 3.0 mmol dissous dans 10 ml de dichlorométhane. Le mélange ainsi obtenu a été mis sous agitation et maintenu à température ambiante durant 3 heures. Le mélange obtenu a été lavé avec une solution aqueuse de NasSsOs à 10 % en poids, une solution saturée de NaHCO3 et une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention une huile transparente et visqueuse. 5 ml de Et2O ont été ajouté pour dissoudre l’huile, puis 25 ml de MeOH ont été additionné et le mélange a été chauffé jusqu’à ébullition pour 3 fois et enfin mis à 0°C pendant la nuit pour favoriser la précipitation. Une poudre blanche a été filtrée, lavée avec du MeOH froid et séchée : 1 .19 g, correspondent à 77 % de rendement (avec un excès énantiomérique > 90 %) de 5,6a- epoxy-cholestan-3p-octanoxyle a été ainsi obtenue. 0.90 g of meta-chloro-peroxybenzoic acid (corresponds to 4.0 mmol) have been dissolved in 40 ml of dichloromethane and added dropwise to a mixture of 1.50 g of cholestan-3p-octanoxyl at 3.0 mmol dissolved in 10 ml of dichloromethane. The mixture thus obtained was stirred and kept at ambient temperature for 3 hours. The mixture obtained was washed with an aqueous solution of NasSsOs at 10% by weight, a saturated solution of NaHCO 3 and a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and allows a transparent and viscous oil to be obtained. 5 ml of Et 2 O was added to dissolve the oil, then 25 ml of MeOH was added and the mixture was heated to boiling for 3 times and finally put at 0°C overnight to promote precipitation . A white powder was filtered, washed with cold MeOH and dried: 1.19 g, corresponding to 77% yield (with an enantiomeric excess > 90%) of 5,6a-epoxy-cholestan-3p-octanoxyl was thus obtained.
[143] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 3.51 - 3.37 (m, 3H), 2.88 - 2.87 (d, 1 H), 2.02 - 1 .87 (m, 4H), 1.84 - 1 .76 (m, 1 H), 1.69 - 1 .67 (m, 1 H), 1.58 - 1 .45 (m, 7H), 0.89 - 0.88 (m, 42H), 0.60 (s, 3H). [143] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 3.51 - 3.37 (m, 3H), 2.88 - 2.87 (d, 1H), 2.02 - 1.87 (m, 4H), 1.84 - 1.76 (m, 1H), 1.69 - 1.67 (m, 1H), 1.58 - 1.45 (m, 7H), 0.89 - 0.88 (m, 42H), 0.60 (s, 3H).
[144] La troisième étape consiste à synthétiser le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-octanoxyle (DX1 15 sous forme basique) de la manière suivante :
[144] The third step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl (DX1 15 in basic form) as follows:
[145] 0.48 g d’histamine sous sa forme basique (correspondant à 4.31 mmol) a été ajoutée à une solution butanolique de 10 ml comprenant 1.1 g du composé 5,6a-epoxy-cholestan- 3p-octanoxyle à 2.14 mmol sous agitation. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures. [145] 0.48 g of histamine in its basic form (corresponding to 4.31 mmol) was added to a 10 ml butanol solution comprising 1.1 g of the compound 5,6a-epoxy-cholestan-3p-octanoxyl at 2.14 mmol under stirring. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 5,6a-epoxy-cholestan-3p-octanoxyle. The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 5,6a-epoxy-cholestan-3p-octanoxyl.
Après refroidissement, le mélange a été dilué dans 10 ml de méthyl tert-butyl éther. La phase organique a été lavée par 2 fois avec 10 ml d’eau puis une fois avec 10 ml d’une solution saturée de NaCI. After cooling, the mixture was diluted in 10 ml of methyl tert-butyl ether. The organic phase was washed twice with 10 ml of water and then once with 10 ml of a saturated NaCl solution.
La phase organique a été séchée sur du MgSC anhydre. Le mélange a été purifié par colonne chromatographique sur un automate de purification. L’éluant utilisé est un
mélange Acétate d’éthyle/Méthanol en rapport 95/5. Une poudre blanche de 0.74 g de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-octanoxyle a été obtenue. Le rendement final de la réaction est de 55 % avec une pureté supérieure à 95 % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). The organic phase was dried over anhydrous MgSC. The mixture was purified by column chromatography on a purification automaton. The eluent used is a Ethyl acetate/Methanol mixture in a 95/5 ratio. A white powder of 0.74 g of 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl was obtained. The final yield of the reaction is 55% with a purity greater than 95% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
[146] 1H-NMR (500 MHz, MeOD-4c : 5 (ppm) 7.59 (s, 1 H), 6.86 (s, 1 H), 3.79 - 3.74 (q, 1 H), 3.49 - 3.47 (q, 2H), 2.95 - 2.90 (m, 1 H), 2.78 - 2.70 (m, 3H), 2.40 (s, 1 H), 2.01 - 1 .84 (m, 5H), 1.62 - 1 .54 (m, 9H), 1 .39 - 1 .02 (m, 30H), 0.95 - 0.89 (d, 12H), 0.70 (s, 3H). [146] 1 H-NMR (500 MHz, MeOD-4c: 5 (ppm) 7.59 (s, 1 H), 6.86 (s, 1 H), 3.79 - 3.74 (q, 1 H), 3.49 - 3.47 (q , 2H), 2.95 - 2.90 (m, 1H), 2.78 - 2.70 (m, 3H), 2.40 (s, 1H), 2.01 - 1.84 (m, 5H), 1.62 - 1.54 (m, 9H), 1.39 - 1.02 (m, 30H), 0.95 - 0.89 (d, 12H), 0.70 (s, 3H).
[147] Exemple 13 : Préparation d’un sel dilactate du composé 5a-hvdroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino1-cholestan-3P- octanoxyle (DX1 15 sous forme dilactate) [147] Example 13: Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-octanoxyl (DX1 15 in dilactate form)
[148] Un sei dilactate du composé 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-octanoxyle a été préparé de la manière suivante :
[148] A salt dilactate of the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl was prepared as follows:
[149] 166.2 mg d’acide lactique (1.85 mmol) a été ajouté à une solution de 0.57 g de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-octanoxyle (0.92 mmol) dans 5 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température ambiante pendant trois heures. Une évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche de 0.59 g de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-octanoxyle dilactate. [149] 166.2 mg of lactic acid (1.85 mmol) was added to a solution of 0.57 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- octanoxyl (0.92 mmol) in 5 ml of anhydrous ethanol with stirring. Stirring was maintained at room temperature for three hours. Vacuum evaporation of the organic solvent yields a white powder of 0.59 g of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl dilactate.
[150] 1H-NMR (500 MHz, MeOD-4c : 5 (ppm) 7.71 (s, 1 H), 6.94 (s, 1 H), 4.02 - 3.98 (q, 2H), 3.72 - 3.65 (q, 1 H), 3.41 - 3.31 (m, 3H), 3.21 - 3.16 (m, 1 H), 2.95 - 2.92 (t, 2H), 2.86 - 2.85 (d, 1 H), 2.04 - 1 .99 (t, 1 H), 1 .96 - 1 .93 (d, 1 H), 1.83 - 1 .59 (m, 7H), 1 .49 - 1 .04 (m, 38H), 0.98 - 0.89 (m, 2H), 0.85 - 0.84 (d, 3H), 0.81 - 0.77 (m, 9H), 0.66 (s, 3H). [150] 1 H-NMR (500 MHz, MeOD-4c: 5 (ppm) 7.71 (s, 1 H), 6.94 (s, 1 H), 4.02 - 3.98 (q, 2H), 3.72 - 3.65 (q, 1H), 3.41 - 3.31 (m, 3H), 3.21 - 3.16 (m, 1H), 2.95 - 2.92 (t, 2H), 2.86 - 2.85 (d, 1H), 2.04 - 1.99 (t, 1H), 1.96 - 1.93 (d, 1H), 1.83 - 1.59 (m, 7H), 1.49 - 1.04 (m, 38H), 0.98 - 0.89 (m, 2H) , 0.85 - 0.84 (d, 3H), 0.81 - 0.77 (m, 9H), 0.66 (s, 3H).
[151] Exemple 14 : Synthèse du composé 5a-hvdroxy-6P-[2-(1 H-imidazol-4-yl)-éthylamino1- cholestan-38-azoture (nommé DX123) [151] Example 14: Synthesis of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-38-azide (named DX123)
[152] La première étape est la synthèse du composé 3-mesylcholestane comprenant les étapes suivantes :
[152] The first step is the synthesis of the compound 3-mesylcholestane comprising the following steps:
[153] Dans un ballon de 1 L à 0°C ont été solubilisés 40 g de cholestérol (0.1 mol) et 22 ml de NEts (d=0.88 g/ml, 0.19 mol) en 340 ml de dichlorométhane anhydre. 10 ml de méthanesulfonyl chloride (1.48 g/ml, 0.13 mol) ont été solubilisé dans 40 ml de dichlorométhane anhydre et ajouté goutte par goutte à la solution contenant le cholestérol. Le mélange ainsi obtenu a été laissé sur agitation magnétique pour toute la nuit en la laissant chauffer jusqu’à température ambiante. [153] In a 1 L flask at 0°C, 40 g of cholesterol (0.1 mol) and 22 ml of ETs (d=0.88 g/ml, 0.19 mol) were dissolved in 340 ml of anhydrous dichloromethane. 10 ml of methanesulfonyl chloride (1.48 g/ml, 0.13 mol) were dissolved in 40 ml of anhydrous dichloromethane and added drop by drop to the solution containing the cholesterol. The mixture thus obtained was left on magnetic stirring for the whole night, allowing it to heat up to room temperature.
A l’issus de cette durée, la réaction a été monitorée par TLC et concentré sur vide jusqu’au 2/3 du volume initiale. L’ajout de 500 ml de MeOH nous permet d’obtenir 46.4 g d’un précipité blanc correspondant au produit souhaité (97 % de rendement). At the end of this period, the reaction was monitored by TLC and concentrated under vacuum to 2/3 of the initial volume. The addition of 500 ml of MeOH allows us to obtain 46.4 g of a white precipitate corresponding to the desired product (97% yield).
[154] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.42 - 5.41 (d, 1 H), 4.55 - 4.49 (g, 1 H), 3.00 (s, 3H), 2.56 - 2.45 (m, 2H), 2.05 - 1 .96 (m, 3H), 1 .92 - 1 .75 (m, 3H), 1 .60 - 0.93 (m, 23H), 0.92 - 0.90 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H). [154] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.42 - 5.41 (d, 1 H), 4.55 - 4.49 (g, 1 H), 3.00 (s, 3H), 2.56 - 2.45 ( m, 2H), 2.05 - 1.96 (m, 3H), 1.92 - 1.75 (m, 3H), 1.60 - 0.93 (m, 23H), 0.92 - 0.90 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H).
[155] La deuxième étape consiste à synthétiser à partir du 3[3-mesyl cholestérol le composé 3p-azoture-cholestane de la manière suivante :
[155] The second step consists in synthesizing from 3[3-mesyl cholesterol the compound 3p-azide-cholestane as follows:
[156] Dans un ballon de 500 ml nous avons ajouté en séquence à température ambiante : 23.27 g de 3[3-mésylcholesterol (50.1 mmol), 100 ml de dichlorométhane anhydre, 7.5 ml d’azoture de triméthylsilyle (d=0.868 g/ml, 56.5 mmol) et enfin 12.5 ml de diéthyléthérate de trifluorure de bore (d=1 .15 g/ml, 101.3 mmol). Le mélange ainsi obtenu a été laissé sur agitation magnétique pendant 3 heures. [156] In a 500 ml flask we added in sequence at room temperature: 23.27 g of 3[3-mesylcholesterol (50.1 mmol), 100 ml of anhydrous dichloromethane, 7.5 ml of trimethylsilyl azide (d=0.868 g/ ml, 56.5 mmol) and finally 12.5 ml of boron trifluoride diethyl etherate (d=1.15 g/ml, 101.3 mmol). The mixture thus obtained was left under magnetic stirring for 3 hours.
A l’issus de cette durée, la réaction a été neutralisée par addition de 100 ml d’une solution de NaOH 2M. Les produits organiques ont été extrait deux fois avec dichlorométhane. Les phases organiques ont été combinées et rincées deux fois avec une solution saturée de NaCI. La phase organique a été séchée sur du MgSC , filtrée et puis évaporée permettant l’obtention d’une solide. Le brut de la réaction a été purifié par colonne chromatographique
éluant hexane 100 %. Une poudre blanche-jaunâtre de 13.33 g correspondant au 3p- azoture-cholestane a été ainsi obtenue. Le rendement final de la réaction est de 65 %. At the end of this period, the reaction was neutralized by adding 100 ml of a 2M NaOH solution. The organics were extracted twice with dichloromethane. The organic phases were combined and rinsed twice with saturated NaCl solution. The organic phase was dried over MgSC, filtered and then evaporated to obtain a solid. The reaction crude was purified by column chromatography eluent 100% hexane. A white-yellowish powder of 13.33 g corresponding to 3p-azide-cholestane was thus obtained. The final yield of the reaction is 65%.
[157] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.39 - 5.38 (d, 1 H), 3.23 - 3.17 (q, 1 H), 2.30 - 2.28 ( , 2H), 2.03 - 1 .97 (m, 2H), 1 .91 - 1 .81 (m, 3H), 1 .60 - 0.94 (m, 24H), 0.92 - 0.91 (d, 3H), 0.87 - 0.86 (dd, 6H), 0.68 (s, 3H). [157] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.39 - 5.38 (d, 1 H), 3.23 - 3.17 (q, 1 H), 2.30 - 2.28 ( , 2H), 2.03 - 1 .97 (m, 2H), 1.91 - 1.81 (m, 3H), 1.60 - 0.94 (m, 24H), 0.92 - 0.91 (d, 3H), 0.87 - 0.86 (dd, 6H), 0.68 (s, 3H).
[158] La troisième étape de synthèse consiste à synthétiser à partir du 3p-azoturecholestane le composé 3p-azoture-5,6a-epoxycholestane de la manière suivante :
[158] The third synthetic step consists in synthesizing from 3p-azoturecholestane the compound 3p-azide-5,6a-epoxycholestane as follows:
[159] 950 mg d’acide méta-chloro-peroxybenzoïque au 77 % de pureté (4.24 mmol) ont été dissous dans 15 ml de dichlorométhane et ajouté goutte à goutte dans un solution de 1 .3 g de 3p-azoturecholestane (3.16 mmol) dissous dans 15 ml de dichlorométhane. Le mélange ainsi obtenu a été mis sous agitation et maintenu à température ambiante durant 3 heures. Le mélange obtenu a été lavé deux fois avec une solution aqueuse de NasSsOs à 10 % en poids, deux fois avec une solution saturée de NaHCO3 et une fois avec une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention de 1 .35 g d’une poudre blanche correspondant au mélange de : 3-azoture-5,6a-epoxycholestane (83 % du total) et 3p-azoture-5,6 -epoxycholestane (17 % de la poudre blanche). Le produit final a été utilisé sans purification supplémentaire. [159] 950 mg of 77% pure meta-chloro-peroxybenzoic acid (4.24 mmol) were dissolved in 15 ml of dichloromethane and added dropwise to a solution of 1.3 g of 3p-azoturecholestane (3.16 mmol ) dissolved in 15 ml of dichloromethane. The mixture thus obtained was stirred and kept at room temperature for 3 hours. The mixture obtained was washed twice with an aqueous solution of NasSsOs at 10% by weight, twice with a saturated solution of NaHCO 3 and once with a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 1.35 g of a white powder corresponding to the mixture of: 3-azide-5,6a-epoxycholestane (83% of the total) and 3p-azide- 5,6 -epoxycholestane (17% white powder). The final product was used without further purification.
[160] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 3.63 - 3.56 (q, 1 H), 2.94 - 2.93 (d, 1 H), 2.13 - 2.08 (t, 1 H), 1 .97 - 0.94 (m, 30H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.61 (s, 3H). [160] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 3.63 - 3.56 (q, 1 H), 2.94 - 2.93 (d, 1 H), 2.13 - 2.08 (t, 1 H), 1 .97 - 0.94 (m, 30H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.61 (s, 3H).
[161] La quatrième étape est la synthétise du 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-azoture (DX123 sous forme neutre) de la manière suivante :
[162] 864 mg d’histamine sous sa forme basique (7.77 mmol) a été ajouté à une solution butanolique de 20 ml comprenant 2.02 g du composé 3p-azoture-5,6a-epoxycholestane à 83 % (3.9 mmol) sous agitation à 130°C. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures. [161] The fourth step is the synthesis of 5a-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide (DX123 in neutral form) as follows : [162] 864 mg of histamine in its basic form (7.77 mmol) was added to a 20 ml butanol solution comprising 2.02 g of the compound 3p-azide-5,6a-epoxycholestane at 83% (3.9 mmol) under stirring at 130°C. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours.
L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 3p-azoture-5,6a-epoxycholestane. The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 3p-azide-5,6a-epoxycholestane.
Après refroidissement, le mélange a été dilué dans 15 ml de méthyl tert-butyl éther. La phase organique a été lavée par 3 fois avec 15 ml d’eau. After cooling, the mixture was diluted in 15 ml of methyl tert-butyl ether. The organic phase was washed 3 times with 15 ml of water.
La phase organique a été séchée sur du MgSC anhydre, filtré et puis évaporée permettant l’obtention d’une huile brune. Le mélange a été purifié par colonne chromatographique sur gel de Silice sur un automate de purification comprenant une colonne prépacké de 40 g éluant dichlorométhane-acétate d’éthyle 75-25 % jusqu’au 0-100 %. Une poudre blanche de 890 mg de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-azoture a été obtenue. Le rendement final de la réaction est de 42 % avec une pureté supérieure à 97 % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). The organic phase was dried over anhydrous MgSC, filtered and then evaporated to obtain a brown oil. The mixture was purified by column chromatography on silica gel on a purification automaton comprising a prepacked column of 40 g eluting dichloromethane-ethyl acetate 75-25% up to 0-100%. A white powder of 890 mg of 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide was obtained. The final reaction yield is 42% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
[163] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.55 (s, 1 H), 6.81 (s, 1 H), 3.73 - 3.67 (g, 1 H), 2.90 - 2.85 (m, 1 H), 2.72 - 2.62 (m, 3H), 2.33 (s, 1 H), 2.05 - 2.00 (t, 1 H), 1 .96 - 1 .94 (m, 1 H), 1.84 - 1 .77 (m, 1 H), 1.74 - 1 .72 (m, 1 H), 1 .62 - 0.97 (m, 27H), 0.89 - 0.88 (d, 3H), 0.85 - 0.84 (d, 6H), 0.64 (s, 3H). [163] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.55 (s, 1 H), 6.81 (s, 1 H), 3.73 - 3.67 (g, 1 H), 2.90 - 2.85 ( m, 1H), 2.72 - 2.62 (m, 3H), 2.33 (s, 1H), 2.05 - 2.00 (t, 1H), 1.96 - 1.94 (m, 1H), 1.84 - 1 .77 (m, 1H), 1.74 - 1.72 (m, 1H), 1.62 - 0.97 (m, 27H), 0.89 - 0.88 (d, 3H), 0.85 - 0.84 (d, 6H), 0.64 (s, 3H).
[164] Exemple 15 : Préparation d’un sel dilactate du composé 5a-hvdroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino1-cholestan-3P-azoture (DX123 forme dilactate)
[164] Example 15: Preparation of a dilactate salt of the compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-azide (DX123 dilactate form)
[165] 63.5 mg d’acide lactique (0.77 mmol) a été ajouté à une solution de 210 mg de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-azoture dans 4 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température ambiante pour 3 heures. Une évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche
de 263.5 mg de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3 -azoture di lactate. [165] 63.5 mg of lactic acid (0.77 mmol) was added to a solution of 210 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- azide in 4 ml of anhydrous ethanol with stirring. Stirring was maintained at room temperature for 3 hours. Vacuum evaporation of the organic solvent makes it possible to obtain a white powder of 263.5 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-azide dilactate.
[166] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.67 (s, 1 H), 6.92 (s, 1 H), 4.01 - 3.97 (m, 2H), 3.73 - 3.67 (g, 1 H), 3.34 - 3.29 (m, 1 H), 3.19 - 3.13 (m, 1 H), 2.91 - 2.88 (t, 2H), 2.81 (s, 1 H), 2.20 - 2.15 (t, 1 H), 1.94 - 1.92 (d, 1 H), 1.77 - 1.75 (m, 3H), 1.66 - 1.58 (m, 4H), 1.47 - 0.98 (m, 26H), 0.95 - 0.87 (m, 2H), 0.83 - 0.82 (d, 3H), 0.77 - 0.76 (dd, 6H), 0.65 (s, 3H). [166] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.67 (s, 1 H), 6.92 (s, 1 H), 4.01 - 3.97 (m, 2H), 3.73 - 3.67 (g , 1H), 3.34 - 3.29 (m, 1H), 3.19 - 3.13 (m, 1H), 2.91 - 2.88 (t, 2H), 2.81 (s, 1H), 2.20 - 2.15 (t, 1H ), 1.94 - 1.92 (d, 1H), 1.77 - 1.75 (m, 3H), 1.66 - 1.58 (m, 4H), 1.47 - 0.98 (m, 26H), 0.95 - 0.87 (m, 2H), 0.83 - 0.82 (d, 3H), 0.77 - 0.76 (dd, 6H), 0.65 (s, 3H).
[167] Exemple 16 : Synthèse d’un sel trichlorure du composé 5a-hvdroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino1-cholestan-3P-amino (nommé DX125, sous forme trichloride) [167] Example 16: Synthesis of a trichloride salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-amino (named DX125, in trichloride form)
[168] La réaction qui va permettre de synthétiser un sel trichlorure du 5a-hydroxy-6p-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3p-amino à partir du 5a-hydroxy-6p-[2-(1 H-imidazol- 4-yl)-éthylamino]-cholestan-3p-azoture est la suivante :
[168] The reaction which will make it possible to synthesize a trichloride salt of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-amino from 5a-hydroxy-6p -[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-azide is as follows:
[169] 730 mg de triphénylphosphine (2.8 mmol) a été ajouté à une solution de 8.0 ml THF de 300 mg de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-azoture (0.56 mmol) sous agitation à 70°C. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 70°C durant 2 heures. Puis, 0.5 ml d’eau (correspondent à 27.8 mmol) a été additionné et maintenu l’agitation pour deux autres heures à 70°C. L'avancée de la réaction est contrôlée par chromatographie sur couche mince (CCM), puis le mélange des solvants a été évaporé. La poudre blanche obtenue a été dissoute avec 20 ml de dichlorométhane et transféré dans une ampoule à décanter contenant 20 ml d’une solution aqueuse de HCl (1 ml de HCl 37 % dans 19 ml d’eau), la phase aqueuse a été lavée trois fois avec du dichlorométhane. La phase aqueuse a été séchée sous vide permettant l’obtention d’une poudre blanche. La poudre a été reprise avec du dichlorométhane et filtré une dernière fois pour éliminer les dernières traces de triphénylphosphine. La procédure nous permet d’obtenir 350 mg d’un sel trichlorure de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-amino avec un rendement quantitatif et une pureté supérieure à 95 %.
[170] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 8.90 (s, 1 H), 7.56 (s, 1 H), 3.67 - 3.60 (q, 1 H), 3.56 - 3.41 (m, 4H), 3.28 - 3.27 (d, 1 H), 2.61 - 2.56 (t, 1 H), 2.08 - 2.05 (d, 1 H), 1 .99 - 1 .11 (m, 28H), 1 .06 - 1 .00 (dd, 1 H) 0.96 - 0.94 (d, 3H), 0.89 - 0.88 (dd, 6H), 0.78 (s, 3H). [169] 730 mg of triphenylphosphine (2.8 mmol) was added to an 8.0 ml THF solution of 300 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan- 3p-azide (0.56 mmol) with stirring at 70°C. The mixture was kept under stirring under reflux heating at a temperature of 70°C for 2 hours. Then, 0.5 ml of water (corresponds to 27.8 mmol) was added and the stirring was maintained for another two hours at 70°C. The progress of the reaction is monitored by thin layer chromatography (TLC), then the solvent mixture was evaporated. The white powder obtained was dissolved with 20 ml of dichloromethane and transferred to a separatory funnel containing 20 ml of an aqueous solution of HCl (1 ml of 37% HCl in 19 ml of water), the aqueous phase was washed three times with dichloromethane. The aqueous phase was dried under vacuum allowing a white powder to be obtained. The powder was taken up with dichloromethane and filtered one last time to remove the last traces of triphenylphosphine. The procedure allows us to obtain 350 mg of a 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-amino trichloride salt in quantitative yield and purity greater than 95%. [170] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 8.90 (s, 1 H), 7.56 (s, 1 H), 3.67 - 3.60 (q, 1 H), 3.56 - 3.41 ( m, 4H), 3.28 - 3.27 (d, 1H), 2.61 - 2.56 (t, 1H), 2.08 - 2.05 (d, 1H), 1.99 - 1.11 (m, 28H), 1 . 06 - 1.00 (dd, 1H) 0.96 - 0.94 (d, 3H), 0.89 - 0.88 (dd, 6H), 0.78 (s, 3H).
[171] Exemple 17 : Synthèse du composé 5a-hvdroxy-6P-[2-(1 H-imidazol-4-yl)-éthylamino1- cholestan-3B-acétamide (nommé DX127) [171] Example 17: Synthesis of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3B-acetamide (named DX127)
[172] La première étape de synthèse est la réduction du groupement azoture en amine en position 3 du dérivé cholestan-3p-azoture.
[172] The first synthetic step is the reduction of the azide group to an amine in position 3 of the cholestan-3p-azide derivative.
[173] 5.21 g de cholestan-3[3-azoture (12.7 mmol) ont été dissous dans 60 ml de tétrahydrofurane (THF) puis 5 portions d’environ 480 mg de LiALH4 ont été additionnés toutes les 15 minutes pour un total de 2.32 g (61.1 mmol). Le mélange ainsi obtenu est laissé sur agitation magnétique pendant 3 heures. A l’issus de cette durée, la réaction a été neutralisée par addition de quelques gouttes de NasCOs 5 % aq (ajouté délicatement). La phase organique a été extrait trois fois avec de l’AcOEt et les phases organiques ont été combinés. La solution résultante a été séchée sur du MgSO4, filtrée et puis évaporée permettant l’obtention d’un solide. Une poudre blanche suffisamment propre de 3.78 g correspondant au 3p-amino-cholestane a été ainsi obtenue. Le rendement final de la réaction est de 77 %. [173] 5.21 g of cholestan-3[3-azide (12.7 mmol) were dissolved in 60 ml of tetrahydrofuran (THF) then 5 portions of approximately 480 mg of LiALH 4 were added every 15 minutes for a total of 2.32g (61.1mmol). The mixture thus obtained is left with magnetic stirring for 3 hours. At the end of this period, the reaction was neutralized by adding a few drops of NasCOs 5% aq (added delicately). The organic phase was extracted three times with AcOEt and the organic phases were combined. The resulting solution was dried over MgSO 4 , filtered and then evaporated, allowing a solid to be obtained. A sufficiently clean white powder of 3.78 g corresponding to 3p-amino-cholestane was thus obtained. The final yield of the reaction is 77%.
[174] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.32 - 5.31 (d, 1 H), 2.63 - 2.57 (q, 1 H), 2.17 - 2.13 (m, 1 H), 2.08 - 1.93 (m, 4H), 1.85 - 1.81 (m, 2H), 1.72 - 1.68 (m, 1 H), 1.43 - 0.84 (m, 33H), 0.68 (s, 3H). [174] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.32 - 5.31 (d, 1 H), 2.63 - 2.57 (q, 1 H), 2.17 - 2.13 (m, 1 H), 2.08 - 1.93 (m, 4H), 1.85 - 1.81 (m, 2H), 1.72 - 1.68 (m, 1H), 1.43 - 0.84 (m, 33H), 0.68 (s, 3H).
[175] La deuxième étape consiste à synthétiser à partir du cholestan-3-amine le composé cholestan-3 -acétamide de la manière suivante :
[175] The second step consists in synthesizing from cholestan-3-amine the compound cholestan-3-acetamide as follows:
[176] 3.78 g de cholestan-3p-amine (9.8 mmol) ont été dissous dans 20 ml de dichlorométhane anhydre, puis 16 ml de pyridine anhydre (198 mmol) et 5.0 g d’anhydride
acétique (49.0 mmol) ont été ajoutés à la réaction. Le mélange ainsi obtenu a été mis sous agitation et maintenu à température ambiante pour toute la nuit. Le mélange obtenu a été lavé trois fois avec une solution aqueuse de HCl 0.1 M et la phase organique a été séchée sur du MgSC anhydre, filtrée et séchée sous vide. L’huile obtenu a été dissous avec 30 ml de chloroforme, 90 ml de MeOH a été additionné et le mélange a été chauffé jusqu’à ébullition pour 3 fois et jusqu’à la réduction du volume des solvants de 2/3 et enfin mis à 0°C pour favoriser la précipitation. Une poudre blanche a été obtenue, filtrée, lavée avec du MeOH froid et séchée : 2.41 g, correspondent à 58 % de rendement de cholestan-3p- acétamide a été ainsi obtenue. [176] 3.78 g of cholestan-3p-amine (9.8 mmol) was dissolved in 20 ml of anhydrous dichloromethane, then 16 ml of anhydrous pyridine (198 mmol) and 5.0 g of anhydride acetic acid (49.0 mmol) was added to the reaction. The resulting mixture was stirred and kept at room temperature overnight. The mixture obtained was washed three times with an aqueous solution of 0.1 M HCl and the organic phase was dried over anhydrous MgSC, filtered and dried under vacuum. The oil obtained was dissolved with 30 ml of chloroform, 90 ml of MeOH was added and the mixture was heated until boiling for 3 times and until the volume of solvents was reduced by 2/3 and finally put at 0°C to promote precipitation. A white powder was obtained, filtered, washed with cold MeOH and dried: 2.41 g, corresponding to 58% yield of cholestan-3p-acetamide was thus obtained.
[177] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.36 - 5.35 (d, 1 H), 5.32 - 5.30 (d, 1 H), 3.73 - 3.65 (g, 1 H), 2.32 - 2.29 ( , 1 H), 2.09 - 1 .79 (m, 9H), 1 .60 - 0.95 (m, 22H), 0.92 - 0.90 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H). [177] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.36 - 5.35 (d, 1 H), 5.32 - 5.30 (d, 1 H), 3.73 - 3.65 (g, 1 H), 2.32 - 2.29 ( , 1H), 2.09 - 1.79 (m, 9H), 1.60 - 0.95 (m, 22H), 0.92 - 0.90 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 ( s, 3H).
[178] La troisième étape consiste à synthétiser le 5,6-epoxy-cholestan-3[3-acétamide de la manière suivante :
[178] The third step is to synthesize 5,6-epoxy-cholestan-3[3-acetamide as follows:
[179] 1.19 g d’acide méta-chloro-peroxybenzoïque au 77 % de pureté (5.3 mmol) ont été dissous dans 10 ml de dichlorométhane et ajouté goutte à goutte dans un mélange de 1.61 g de cholest-3[3-acétamide (3.8 mmol) dissous dans 25 ml de dichlorométhane. Le mélange ainsi obtenu a été mis sous agitation et maintenue à température ambiante durant 3 heures. Le mélange obtenu a été lavé deux fois avec une solution aqueuse de NasSsOs à 10 % en poids, deux fois une solution saturée de NaHCO3 et une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention de 1 .65 g d’une poudre blanche comprenant : 5,6a-Epoxy-cholest-3p-acétamide (60 % de la poudre blanche) et 5,6 -Epoxy-cholest-3p-acétamide (40 % de la poudre blanche). Le 5,6a- Epoxy-cholest-3p-acétamide a été utilisé sans purification supplémentaire. [179] 1.19 g of meta-chloro-peroxybenzoic acid at 77% purity (5.3 mmol) were dissolved in 10 ml of dichloromethane and added dropwise to a mixture of 1.61 g of cholest-3[3-acetamide ( 3.8 mmol) dissolved in 25 ml of dichloromethane. The mixture thus obtained was stirred and maintained at ambient temperature for 3 hours. The mixture obtained was washed twice with an aqueous solution of NasSsOs at 10% by weight, twice with a saturated solution of NaHCO 3 and a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 1.65 g of a white powder comprising: 5.6a-Epoxy-cholest-3p-acetamide (60% of the white powder) and 5.6 -Epoxy-cholest-3p-acetamide (40% white powder). 5,6a-Epoxy-cholest-3p-acetamide was used without further purification.
[180] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.29 - 5.28 (d, 1 H), 4.05 - 3.99 (g, 1 H), 2.89 - 2.88 (d, 1 H), 2.08 - 0.84 (m, 43H), 0.60 (s, 3H). [180] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.29 - 5.28 (d, 1 H), 4.05 - 3.99 (g, 1 H), 2.89 - 2.88 (d, 1 H), 2.08 - 0.84 (m, 43H), 0.60 (s, 3H).
[181] La quatrième étape consiste à synthétiser le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-acetamide (DX127 sous forme neutre) de la manière suivante :
[181] The fourth step is to synthesize 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide (DX127 in neutral form) as follows:
[182] 0.47 g d’histamine sous sa forme basique (correspondent à 4.26 mmol) a été ajouté à une solution butanolique de 20 ml comprenant 1 .65 g du composé 5,6a-epoxy-cholestan- 3p-acétamide à 60 % correspondent à 0.99 mmol sous agitation. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures. L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 5,6a-epoxy-cholestan-3p-acétamide. Après refroidissement, le mélange a été dilué dans 20 ml de méthyl tert-butyle éther. La phase organique a été lavée par 2 fois avec 20 ml d’eau et trois fois avec 20 ml d’une solution saturée de NaCI. La phase organique a été séchée sur du MgSO4 anhydre. Le mélange a été purifié par colonne chromatographique sur un automate de purification. L’éluant utilisé est un mélange dichlorométhane-méthanol-ammoniac en rapport 75-20-5 %. Une poudre blanche de 0.37 g de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p- acetamide a été obtenue. Le rendement final de la réaction est de 30 % avec une pureté supérieure à 97 % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). [182] 0.47 g of histamine in its basic form (corresponds to 4.26 mmol) was added to a 20 ml butanol solution comprising 1.65 g of the compound 5,6a-epoxy-cholestan-3p-acetamide at 60% correspond at 0.99 mmol with stirring. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours. The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 5,6a-epoxy-cholestan-3p-acetamide. After cooling, the mixture was diluted in 20 ml of methyl tert-butyl ether. The organic phase was washed twice with 20 ml of water and three times with 20 ml of a saturated NaCl solution. The organic phase was dried over anhydrous MgSO 4 . The mixture was purified by column chromatography on a purification automaton. The eluent used is a dichloromethane-methanol-ammonia mixture in a ratio of 75-20-5%. A white powder of 0.37 g of 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide was obtained. The final reaction yield is 30% with a purity greater than 97% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis.
[183] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.56 (s, 1 H), 6.81 (s, 1 H), 4.15 - 4.08 (g, 1 H), 2.91 - 2.88 (m, 1 H), 2.74 - 2.68 (m, 3H), 2.35 (s, 1 H), 1 .99 - 1 .94 (m, 2H), 1.87 - 1 .77 (m, 5H), 1 .66 - 0.97 (m, 28H), 0.90 - 0.88 (d, 3H), 0.85 - 0.84 (d, 6H), 0.65 (s, 3H). [183] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.56 (s, 1 H), 6.81 (s, 1 H), 4.15 - 4.08 (g, 1 H), 2.91 - 2.88 ( m, 1H), 2.74 - 2.68 (m, 3H), 2.35 (s, 1H), 1.99 - 1.94 (m, 2H), 1.87 - 1.77 (m, 5H), 1.66 - 0.97 (m, 28H), 0.90 - 0.88 (d, 3H), 0.85 - 0.84 (d, 6H), 0.65 (s, 3H).
[184] Exemple 18 : Préparation d’un sel dilactate du composé 5a-hvdroxy-6P-[2-(1 H- imidazol-4-yl)-éthylamino]-cholestan-3P-acétamide (DX127 sous forme dilactate) [184] Example 18: Preparation of a dilactate salt of the compound 5a-hvdroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3P-acetamide (DX127 in dilactate form)
[185] Un sel dilactate du composé 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-acétamide a été préparé de la manière suivante:
[185] A dilactate salt of the compound 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide was prepared as follows:
[186] 120.6 mg d’acide lactique (1.34 mmol) ont été ajoutés à une solution de 370 mg de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-acetamide dans 5 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température ambiante pour 3 heures. Une évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche de 490 mg de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p- acétamide dilactate. [186] 120.6 mg of lactic acid (1.34 mmol) was added to a solution of 370 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- acetamide in 5 ml of anhydrous ethanol with stirring. Stirring was maintained at room temperature for 3 hours. Vacuum evaporation of the organic solvent yields a white powder of 490 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-acetamide dilactate.
[187] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.69 (s, 1 H), 6.91 (s, 1 H), 4.08 - 4.03 (m, 1 H), 3.37 - 3.27 (m, 1 H), 3.18 - 3.12 (m, 2H), 2.91 - 2.88 (t, 2H), 2.77 (s, 1 H), 2.07 - 2.02 (t, 1 H), 1 .93 - 1 .90 (d, 1 H), 1 .79 (s, 3H), 1 .76 - 0.88 (m, 36H), 0.82 - 0.81 (d, 3H), 0.75 - 074 (dd, 6H), 0.63 (s, 3H). [187] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.69 (s, 1 H), 6.91 (s, 1 H), 4.08 - 4.03 (m, 1 H), 3.37 - 3.27 ( m, 1H), 3.18 - 3.12 (m, 2H), 2.91 - 2.88 (t, 2H), 2.77 (s, 1H), 2.07 - 2.02 (t, 1H), 1.93 - 1.90 ( d, 1H), 1.79 (s, 3H), 1.76 - 0.88 (m, 36H), 0.82 - 0.81 (d, 3H), 0.75 - 074 (dd, 6H), 0.63 (s, 3H) .
[188] Exemple 19 : Synthèse du composé 5a-hydroxy-6P-[2-(1 H-imidazol-4-yl)-éthylamino1- cholestan-3P-méthylsulfonyle (nommé DX129) [188] Example 19: Synthesis of the compound 5a-hydroxy-6P-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3P-methylsulfonyl (named DX129)
[189] La première étape consiste à synthétiser à partir du 3p-mésylcholestérol le composé 3p-méthylthio-cholestane de la manière suivante :
,[189] The first step consists in synthesizing from 3p-mesylcholesterol the compound 3p-methylthio-cholestane as follows: ,
[190] Dans un ballon de 500 ml, nous avons ajouté en séquence à température ambiante : 10.62 g de 3-mésylcholestérol (22.9 mmol), 50 ml de dichlorométhane, 5.0 g de triméthyl(méthylthio)silane (41 .6 mmol) et 8.0 ml de diéthyléthérate de trifluorure de bore (d=1 .15 g/ml, 64.8 mmol). Le mélange ainsi obtenu a été laissé sur agitation magnétique pour 3 heures. [190] In a 500 ml flask, we added in sequence at room temperature: 10.62 g of 3-mesylcholesterol (22.9 mmol), 50 ml of dichloromethane, 5.0 g of trimethyl(methylthio)silane (41.6 mmol) and 8.0 ml of boron trifluoride diethyl etherate (d=1.15 g/ml, 64.8 mmol). The mixture thus obtained was left under magnetic stirring for 3 hours.
A l’issus de cette durée, la réaction a été neutralisée par addition de 100 ml d’une solution de NaOH 2M. La phase organique a été extraite deux fois avec du dichlométhane. Les phases organiques ont été combinées et rincées deux fois avec une solution saturée de NaCI. La phase organique a été séchée sur du MgSC , filtrée et puis évaporée permettant
l’obtention d’un solide. Le brut réactionnel a été purifié par colonne chromatographique sur gel de silice éluant hexane 100 %. Une poudre blanche de 6.04 g correspondant au 3p-méthylthio-cholestane a été ainsi obtenue. Le rendement final de la réaction est de 63 %. At the end of this period, the reaction was neutralized by adding 100 ml of a 2M NaOH solution. The organic phase was extracted twice with dichloromethane. The organic phases were combined and rinsed twice with saturated NaCl solution. The organic phase was dried over MgSC, filtered and then evaporated allowing obtaining a solid. The reaction crude was purified by column chromatography on silica gel eluting with 100% hexane. A white powder of 6.04 g corresponding to 3p-methylthio-cholestane was thus obtained. The final yield of the reaction is 63%.
[191] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 5.33 (s, 1 H), 2.71 - 2.65 (m, 1 H), 2.30 - 2.26 (m, 2H), 2.1 1 (s, 3H), 2.02 - 0.94 (m, 29H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H). [191] 1 H-NMR (500 MHz, CDCI 3 ): 5 (ppm) 5.33 (s, 1 H), 2.71 - 2.65 (m, 1 H), 2.30 - 2.26 (m, 2H), 2.1 1 (s , 3H), 2.02 - 0.94 (m, 29H), 0.92 - 0.91 (d, 3H), 0.87 - 0.85 (dd, 6H), 0.67 (s, 3H).
[192] La deuxième étape de synthèse consiste à synthétiser à partir du 3|3-méthylthio- cholestane le composé 3p-méthylsulfonyl-5,6-epoxy-cholestane de la manière suivante :
[192] The second synthetic step consists in synthesizing from 3|3-methylthiocholestane the compound 3p-methylsulfonyl-5,6-epoxy-cholestane as follows:
[193] 6.30 g d’acide méta-chloro-peroxybenzoïque au 77 % de pureté (28.1 mmol) a été dissout dans 40 ml de dichlorométhane et une solution de 2.9 g de 3-méthylthio- cholestane (6.8 mmol) s dans 20 ml de dichlorométhane a été ajoutée goutte à goutte. Le mélange ainsi obtenu a été mis sous agitation et maintenue à température ambiante durant 3 heures. Le mélange obtenu a été lavé deux fois avec une solution aqueuse de NasSsOs à 10 % en poids, trois fois avec une solution saturée de NaHCOs et une fois avec une solution saturée de NaCI. La phase organique a été séchée sur du MgSC anhydre. Une évaporation sous vide du solvant organique a été réalisée et permet l'obtention de 2.10 g d’une poudre blanche. Le brut de la réaction a été purifié par colonne chromatographique éluant initial hexane 100% et puis des mélanges d’hexane et AcOEt. Le produit souhaité a été purifié par colonne chromatographique sur gel de silice avec l’éluent hexanes-AcOEt 55-45%v. Une poudre blanche de 380 mg correspondant au 3- méthylthio-5,6epoxy-cholestane a été ainsi obtenue. Le rendement final de la réaction est de 12 %. [193] 6.30 g of meta-chloro-peroxybenzoic acid at 77% purity (28.1 mmol) was dissolved in 40 ml of dichloromethane and a solution of 2.9 g of 3-methylthio-cholestane (6.8 mmol) s in 20 ml of dichloromethane was added dropwise. The mixture thus obtained was stirred and maintained at ambient temperature for 3 hours. The mixture obtained was washed twice with an aqueous solution of NasSsOs at 10% by weight, three times with a saturated solution of NaHCOs and once with a saturated solution of NaCl. The organic phase was dried over anhydrous MgSC. Vacuum evaporation of the organic solvent was carried out and made it possible to obtain 2.10 g of a white powder. The reaction crude was purified by column chromatography, eluent initial 100% hexane and then mixtures of hexane and AcOEt. The desired product was purified by column chromatography on silica gel with the eluent hexanes-AcOEt 55-45% v . A white powder of 380 mg corresponding to 3-methylthio-5,6epoxy-cholestane was thus obtained. The final yield of the reaction is 12%.
[194] 1H-NMR (500 MHz, CDCI3): 5 (ppm) 3.25 - 3.20 (m, 1 H), 3.02-3.01 ( , 1 H), 2.83 (s, 3H), 2.11 - 2.09 (m, 1 H), 1 .98 - 1 .93 (m, 3H), 1.87 - 1 .79 (m, 3H), 1 .57 - 0.93 (m, 24H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.61 (s, 3H). [194] 1 H-NMR (500 MHz, CDCI3): 5 (ppm) 3.25 - 3.20 (m, 1 H), 3.02-3.01 ( , 1 H), 2.83 (s, 3H), 2.11 - 2.09 (m, 1H), 1.98 - 1.93 (m, 3H), 1.87 - 1.79 (m, 3H), 1.57 - 0.93 (m, 24H), 0.89 - 0.88 (d, 3H), 0.86 - 0.85 (dd, 6H), 0.61 (s, 3H).
[195] La troisième étape est la synthèse du 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)- éthylamino]-cholestan-3p-méthylsulfonyl (DX129 sous forme basique) de la manière
suivante :
[195] The third step is the synthesis of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methylsulfonyl (DX129 in basic form) as next :
[196] 338 mg d’histamine sous sa forme basique (3.04 mmol) a été ajoutée à une solution butanolique de 5 ml comprenant 350 mg du composé 3-méthylsulfonyl-5,6-epoxy- cholestane (0.75 mmol) sous agitation à 130°C. Le mélange a été maintenu sous agitation dans un chauffage à reflux à une température de 130 °C durant 48 heures. L'avancée de la réaction peut être contrôlée par chromatographie sur couche mince (CCM) pour suivre la conversion du 3-méthylsulfonyl-5,6-epoxy-cholestane. [196] 338 mg of histamine in its basic form (3.04 mmol) was added to a 5 ml butanol solution comprising 350 mg of the compound 3-methylsulfonyl-5,6-epoxycholestane (0.75 mmol) under stirring at 130 °C. The mixture was kept under stirring under reflux heating at a temperature of 130°C for 48 hours. The progress of the reaction can be monitored by thin layer chromatography (TLC) to follow the conversion of 3-methylsulfonyl-5,6-epoxy-cholestane.
Après refroidissement, le mélange a été dilué dans 5 ml de méthyl tert-butyl éther. La phase organique a été lavée par 3 fois avec 15 ml de chlorure de sodium saturée. After cooling, the mixture was diluted in 5 ml of methyl tert-butyl ether. The organic phase was washed 3 times with 15 ml of saturated sodium chloride.
La phase organique a été séchée sur du MgSC anhydre, filtrée et puis évaporée permettant l’obtention d’une huile brune. Le brut de la réaction a été purifié par colonne chromatographique éluant initiale AcOEt 100 %, puis des mélanges AcOEt-MeOH. Le produit souhaité était purifié avec le mélange AcOEt-MeOH 75-25 %. Une poudre jaune de 190 mg correspondant au 5a-hydroxy-6[3-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan- 3-méthylsulfonyl est obtenue. Le produit est purifié une deuxième fois par colonne chromatographique pour avoir une pureté supérieure à 97 The organic phase was dried over anhydrous MgSC, filtered and then evaporated to obtain a brown oil. The reaction crude was purified by chromatographic column eluent initial AcOEt 100%, then AcOEt-MeOH mixtures. The desired product was purified with AcOEt-MeOH 75-25%. A yellow powder of 190 mg corresponding to 5α-hydroxy-6[3-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3-methylsulfonyl is obtained. The product is purified a second time by chromatographic column to have a purity greater than 97
[197] % mesurée par analyse RMN (résonance magnétique nucléaire) et TLC (Chromatographie sur couche mince). Une poudre blanche de 167.4 mg a été obtenue. Le rendement final de la réaction est de 39 %. [197]% measured by NMR (nuclear magnetic resonance) and TLC (thin layer chromatography) analysis. A white powder of 167.4 mg was obtained. The final yield of the reaction is 39%.
[198] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.63 (s, 1 H), 6.89 (s, 1 H), 3.49 - 3.40 (m, 1 H), 3.04 - 3.02 (m, 1 H), 2.89 (s, 3H), 2.81 - 2.78 (m, 3H), 2.50 (s, 1 H), 2.44 - 2.40 (t, 1 H), 2.02 - 2.01 (m, 1 H), 1 .94 - 1 .92 (m, 1 H), 1 .88 - 1 .83 (m, 1 H), 1.76 - 1 .00 (m, 30H), 0.90 - 0.89 (d, 3H), 0.85 - 0.84 (d, 6H), 0.66 (s, 3H). [198] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.63 (s, 1 H), 6.89 (s, 1 H), 3.49 - 3.40 (m, 1 H), 3.04 - 3.02 ( m, 1H), 2.89 (s, 3H), 2.81 - 2.78 (m, 3H), 2.50 (s, 1H), 2.44 - 2.40 (t, 1H), 2.02 - 2.01 (m, 1H), 1.94 - 1.92 (m, 1H), 1.88 - 1.83 (m, 1H), 1.76 - 1.00 (m, 30H), 0.90 - 0.89 (d, 3H), 0.85 - 0.84 (d, 6H), 0.66 (s, 3H).
[199] Exemple 20 : Préparation d’un sel dilactate du composé 5a-hydroxy-6(3-[2-(1 H- imidazol-4-yl)-éthylamino1-cholestan-3(3-méthylsulfonyl (DX129 sous forme dilactate)
[199] Example 20: Preparation of a dilactate salt of the compound 5a-hydroxy-6(3-[2-(1H-imidazol-4-yl)-ethylamino1-cholestan-3(3-methylsulfonyl) (DX129 in dilactate form )
[200] 51.6 mg d’acide lactique (1.34 mmol) a été ajouté à une solution de 165.0 mg de 5a- hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-méthylsulfonyl dans 5 ml d’éthanol anhydre sous agitation. L’agitation a été maintenue à température ambiante pour 3 heures. Une évaporation sous vide du solvant organique permet l’obtention d’une poudre blanche de 216.6 mg de 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p- méthylsulfonyl dilactate. [200] 51.6 mg of lactic acid (1.34 mmol) was added to a solution of 165.0 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p- methylsulfonyl in 5 ml of anhydrous ethanol with stirring. Stirring was maintained at room temperature for 3 hours. Vacuum evaporation of the organic solvent yields a white powder of 216.6 mg of 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methylsulfonyldilactate.
[201] 1H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.77 (s, 1 H), 6.98 (s, 1 H), 3.52 - 3.47 (m, 1 H), 3.45 - 3.41 (m, 1 H), 3.18 - 3.14 (m, 1 H), 2.96 - 2.94 (t, 2H), 2.89 - 2.87 (m, 4H), 2.59 - 2.55 (t, 1 H), 2.02 - 2.00 (m, 1 H), 1 .97 - 1 .95 (m, 1 H), 1 .86 - 1 .80 (m, 2H), 1 .75 - 1 .65 (m,[201] 1 H-NMR (500 MHz, MeOD-4d): 5 (ppm) 7.77 (s, 1 H), 6.98 (s, 1 H), 3.52 - 3.47 (m, 1 H), 3.45 - 3.41 ( m, 1H), 3.18 - 3.14 (m, 1H), 2.96 - 2.94 (t, 2H), 2.89 - 2.87 (m, 4H), 2.59 - 2.55 (t, 1H), 2.02 - 2.00 (m, 1H), 1.97 - 1.95 (m, 1H), 1.86 - 1.80 (m, 2H), 1.75 - 1.65 (m,
5H) 1 .57 - 0.95 (m, 29H), 0.90 - 0.89 (d, 3H), 0.84 - 0.82 (dd, 6H), 0.72 (s, 3H). 5H) 1.57 - 0.95 (m, 29H), 0.90 - 0.89 (d, 3H), 0.84 - 0.82 (dd, 6H), 0.72 (s, 3H).
[202] Exemple 21 : Étude pharmacocinétique du DX103 [202] Example 21: Pharmacokinetic study of DX103
[203] L’étude suivante est un dosage par LC/MS dans le plasma des différentes molécules sur 3 jours (11 points de mesures au final). Les graphiques sont toujours présentés en comparaison avec le DX101 qui est la référence. [203] The following study is an LC/MS assay in plasma of the different molecules over 3 days (11 measurement points in the end). The graphs are always presented in comparison with the DX101 which is the reference.
[204] Protocole
Échantillonnage plasmatique à 0 (sans injection), 5, 10, 15, 30 min, 1 h 4h 8h 24h 48h 72h (1 1 points) [204] Protocol Plasma sampling at 0 (without injection), 5, 10, 15, 30 min, 1 h 4 h 8 h 24 h 48 h 72 h (1 1 points)
[205] Le profil pharmacocinétique du DX103 en comparaison avec le DX101 est donné à la figure 4. Les résultats sont les suivants :
[205] The pharmacokinetic profile of DX103 compared to DX101 is given in Figure 4. The results are as follows:
[206] Conclusion : Le profil du DX103 montre une absorption plus rapide dans l’organisme et une biodisponibilité légèrement inférieure au DX101 . [206] Conclusion: The profile of DX103 shows faster absorption in the body and a slightly lower bioavailability than DX101.
[207] Exemple 22 : Étude pharmacocinétique du DX105 [207] Example 22: Pharmacokinetic study of DX105
[208] L’étude suivante est un dosage par LC/MS dans le plasma des différentes molécules sur 3 jours (11 points de mesures au final). Les graphiques sont toujours présentés en comparaison avec le DX101 qui est la référence. Protocole
[208] The following study is an LC/MS assay in plasma of the different molecules over 3 days (11 measurement points in the end). The graphs are always presented in comparison with the DX101 which is the reference. Protocol
Échantillonnage plasmatique à 0 (sans injection), 5, 10, 15, 30 min, 1 h 4h 8h 24h 48hPlasma sampling at 0 (without injection), 5, 10, 15, 30 min, 1 h 4 h 8 h 24 h 48 h
72h (11 points) 72h (11 points)
[209] Le profil pharmacocinétique du DX105 en comparaison avec le DX101 est donné à la figure 5. Les résultats sont les suivants :
[209] The pharmacokinetic profile of DX105 compared to DX101 is given in Figure 5. The results are as follows:
[210] Le DX105 montre une biodisponibilité équivalente (voir très égèrement supérieure) au DX101. En revanche, il présente une absorption beaucoup plus rapide et une concentration maximale beaucoup plus importante, ce qui permet de prétendre à de bonne perspective in vivo. [21 1] Exemple 23 : Étude pharmacocinétique du DX1 11 [210] DX105 shows equivalent bioavailability (even slightly higher) than DX101. On the other hand, it presents a much faster absorption and a much higher maximum concentration, which makes it possible to claim a good prospect in vivo. [21 1] Example 23: Pharmacokinetic study of DX1 11
[212] L’étude suivante est un dosage par LC/MS dans le plasma des différentes molécules sur 3 jours (11 points de mesures au final). Les graphiques sont toujours présentés en comparaison avec le DX101 qui est la référence.
[212] The following study is an LC/MS assay in plasma of the different molecules over 3 days (11 measurement points in the end). The graphs are always presented in comparison with the DX101 which is the reference.
Echantillonnage plasmatique à 0 (sans injection), 5, 10, 15, 30 min, 1 h 4h 8h 24h 48h 72h (11 points) Plasma sampling at 0 (without injection), 5, 10, 15, 30 min, 1 h 4 h 8 h 24 h 48 h 72 h (11 points)
[213] Le profil pharmacocinétique du DX1 11 en comparaison avec le DX101 est donné à la figure 6. Les résultats sont les suivants :
Cette étude de pharmacocinétique par voie orale montre que le DX111 démontre une absorption de 3 fois supérieure au DX101 . De plus, le DX111 possède une concentration maximale plus importante ainsi qu’une absorption plus rapide. [213] The pharmacokinetic profile of DX1 11 in comparison with DX101 is given in Figure 6. The results are as follows: This oral pharmacokinetic study shows that DX111 demonstrates 3 times greater absorption than DX101. In addition, DX111 has a higher maximum concentration as well as faster absorption.
[214] Exemple 24 : Étude pharmacocinétique du DX123 [215] L’étude suivante est un dosage par LC/MS dans le plasma des différentes molécules sur 3 jours (11 points de mesures au final). Les graphiques sont toujours présentés en comparaison avec le DX101 qui est la référence. [214] Example 24: Pharmacokinetic study of DX123 [215] The following study is an LC/MS assay in plasma of the various molecules over 3 days (11 measurement points in the end). The graphs are always presented in comparison with the DX101 which is the reference.
Protocole
Protocol
Echantillonnage plasmatique à 0 (sans injection), 5, 10, 15, 30min, 1 h 4h 8h 24h 48h 72h (11 points) Plasma sampling at 0 (without injection), 5, 10, 15, 30min, 1h 4h 8h 24h 48h 72h (11 points)
[216] Le profil pharmacocinétique du DX123 en comparaison avec le DX101 est donné à la figure 8. Les résultats sont les suivants :
[216] The pharmacokinetic profile of DX123 compared to DX101 is given in Figure 8. The results are as follows:
[217] Cette première analyse de pharmacocinétique par voie orale montre que le DX123 présente une biodisponibilité deux fois plus élevée en comparaison au DX101. Ces résultats permettent de prétendre à de bonne perspective in vivo du DX123. [217] This first oral pharmacokinetic analysis shows that DX123 has twice the bioavailability compared to DX101. These results make it possible to claim a good in vivo perspective for DX123.
[218] Exemple 25 : Étude de la cytotoxicité des analogues du DX101 selon l’invention sur les cellules 4T 1
[219] Les tests de viabilité cellulaires ont été réalisés sur des cellules tumorales mammaires murine 4T1 caractérisées comme triples négatives (HER2-, ER-, PR-). [218] Example 25: Study of the cytotoxicity of the DX101 analogues according to the invention on 4T 1 cells [219] Cell viability assays were performed on 4T1 murine mammary tumor cells characterized as triple negative (HER2-, ER-, PR-).
[220] Pour cette expérience, un milieu de culture cellulaire a été préparé. Le milieu de culture est constitué d’un milieu Dulbecco's Modified Eagle Medium (DMEM, commercialisé par Westburg sous la référence LO BE12-604F), comprenant 4.5 g/L glucose avec de la L- Glutamine, auquel y est ajouté 10 % de sérum de veau foetal (SVF) et 50 U/ml de pénicilline /streptomycine. Les cellules 4T1 sont introduites dans ce milieu de culture. [220] For this experiment, a cell culture medium was prepared. The culture medium consists of Dulbecco's Modified Eagle Medium (DMEM, marketed by Westburg under the reference LO BE12-604F), comprising 4.5 g/L glucose with L-Glutamine, to which 10% serum is added. of fetal calf (FCS) and 50 U/ml of penicillin/streptomycin. The 4T1 cells are introduced into this culture medium.
[221] Il a été ensemencé des boites de 96 puits avec 2000 cellules 4T 1 par puits. Après 72 heures (h) de culture en condition normale, c’est-à-dire dans un incubateur à une température de 37 °C à 5 % d’Os, nous traitons pendant 48h les cellules 4T1 avec le DX101 , DX103, DX11 1 , DX123, DX125, DX127 et DX129 à 100 nM, 1 pM, 2.5 pM et 10 pM. Une condition contrôle (CTL) est également réalisée en parallèle en utilisant le protocole décrit précédemment sans traitement avec les molécules DX101 , DX103, DX11 1 , DX123, DX125, DX127 ou DX129. [221] 96-well dishes were seeded with 2000 4T 1 cells per well. After 72 hours (h) of culture under normal conditions, i.e. in an incubator at a temperature of 37°C at 5% bone, we treat the 4T1 cells for 48 hours with DX101, DX103, DX11 1, DX123, DX125, DX127 and DX129 at 100 nM, 1 pM, 2.5 pM and 10 pM. A control condition (CTL) is also carried out in parallel using the protocol described previously without treatment with the molecules DX101, DX103, DX11 1 , DX123, DX125, DX127 or DX129.
[222] La viabilité cellulaire est mesurée par trois différentes méthodes. Pour la première méthode, un marquage MTT est réalisé à 48 heures. Ce test est basé sur l’utilisation du sel de tétrazolium MTT (bromure de 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tétrazolium). Le tétrazolium est réduit par la succinate déshydrogénase mitochondriale des cellules vivantes actives, en formazan, précipité de couleur violette. La quantité de précipité formée est proportionnelle à la quantité de cellules vivantes mais également à l'activité métabolique de chaque cellule. Ainsi, un simple dosage de la densité optique à 550 nm par spectroscopie permet de connaître la quantité relative de cellules vivantes et actives métaboliquement. Après 48 heures, le milieu est aspiré, et les cellules sont incubées avec du MTT (0.5 mg/ml dans du milieu de culture) pendant environ 3 heures. La solution de MTT est aspirée et les cristaux violets sont solubilisés dans du diméthylsulfoxyde (DMSO). La DO (densité optique) est mesurée à 550 nm. Le pourcentage de viabilité est alors déterminé dans chaque puits par rapport au CTL et l’IC5o (concentration pour laquelle il reste 50 % de cellules vivantes) est déterminée pour chaque molécule avec le logiciel Prism à l’aide d’une droite de régression non linéaire ( og(inhibitor) vs. Response). [222] Cell viability is measured by three different methods. For the first method, MTT labeling is carried out at 48 hours. This test is based on the use of the tetrazolium salt MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide). Tetrazolium is reduced by active living cell mitochondrial succinate dehydrogenase to formazan, a violet-colored precipitate. The quantity of precipitate formed is proportional to the quantity of living cells but also to the metabolic activity of each cell. Thus, a simple assay of the optical density at 550 nm by spectroscopy makes it possible to know the relative quantity of living and metabolically active cells. After 48 hours, the medium is aspirated, and the cells are incubated with MTT (0.5 mg/ml in culture medium) for about 3 hours. The MTT solution is aspirated and the purple crystals are dissolved in dimethyl sulfoxide (DMSO). The OD (optical density) is measured at 550 nm. The percentage of viability is then determined in each well compared to the CTL and the IC 5o (concentration for which 50% of living cells remain) is determined for each molecule with the Prism software using a line of nonlinear regression ( og(inhibitor) vs. Response).
[223] Pour la deuxième méthode, le pourcentage de viabilité est déterminé à l’aide du dosage de l’activité de l’enzyme LDH (lactate déshydrogénase) dans les surnageants cellulaires à l’aide du kit non radioactive cytotoxicity assay k/t (Promega). La LDH est une enzyme libérée dans le surnageant des cellules mortes. Plus l’activité LDH dans le surnageant est élevée, plus la mort cellulaire est importante. Dans cet essai enzymatique, la LDH libérée convertit un sel de ttrazolium violet en formazan de couleur rouge,
absorbant à 490 nm. L’intensité de la couleur rouge est proportionnelle au nombre de cellules morte. Après 48h de traitement, les surnageants sont transférés dans une nouvelle plaque 96 puits et sont incubés pendant 30 minutes en présence du substrate mix à température ambiante. La réaction est arrêtée à l’aide du réactif stop stolution et l’absorbance est déterminée à 490 nM. Le pourcentage de mort cellulaire est déterminé ici à l’aide d’un contrôle 100 % d’activité maximale de la LDH (réalisé à partir de cellules non traitées incubées en présence du lysis solution 45 minutes à 37°C juste avant l’ajout du substrate mix), et la viabilité cellulaire dans chaque puits est alors déduite de ce pourcentage. L’IC5o est alors déterminée comme expliqué dans le paragraphe précédent. [223] For the second method, the percentage of viability is determined using the assay of the activity of the enzyme LDH (lactate dehydrogenase) in the cell supernatants using the non-radioactive cytotoxicity assay kit k/t (Promega). LDH is an enzyme released in the supernatant of dead cells. The higher the LDH activity in the supernatant, the greater the cell death. In this enzyme assay, the released LDH converts a purple tetrazolium salt to red-colored formazan, absorbing at 490 nm. The intensity of the red color is proportional to the number of dead cells. After 48 hours of treatment, the supernatants are transferred to a new 96-well plate and are incubated for 30 minutes in the presence of the substrate mix at room temperature. The reaction is stopped using the stop stolution reagent and the absorbance is determined at 490 nM. The percentage of cell death is determined here using a 100% maximum LDH activity control (made from untreated cells incubated in the presence of the lysis solution for 45 minutes at 37°C just before adding of the substrate mix), and the cell viability in each well is then deduced from this percentage. The IC 5 o is then determined as explained in the previous paragraph.
[224] Pour la troisième méthode, le pourcentage de viabilité est déterminé à l’aide du kit CelITox Green Cytotoxicity Assay (Promega). Ce test mesure la mort cellulaire via un changement de l’intégrité membranaire. Ce test utilise une sonde de type cyanine qui ne pénètre pas dans les cellules quand elles sont vivantes, mais, qui se lie à l’ADN des cellules mortes, elles perméables à la sonde, la rendant alors fluorescente. En conséquence, plus la fluorescence dans les puits est élevée, plus la mort cellulaire est importante. Après 48h de traitement, les cellules sont incubées pendant 15 minutes minimum en présence du Celltox green reagent à température ambiante et la fluorescence est lue à ÀemiSsion 485 nm/ÀeXcitation 590 nm. Le pourcentage de mort cellulaire est déterminé à l’aide du contrôle 100 % de mort cellulaire (réalisé à partir de cellules non traitées incubées en présence du lysis solution 30 minutes à 37°C avant l’ajout du Celltox green reagent), et la viabilité cellulaire dans chaque puits est alors déduite de ce pourcentage. L’IC5O est alors déterminée comme expliqué précédemment. [224] For the third method, the percentage of viability is determined using the CelITox Green Cytotoxicity Assay kit (Promega). This test measures cell death via a change in membrane integrity. This test uses a cyanine-type probe which does not penetrate cells when they are alive, but which binds to the DNA of dead cells which are permeable to the probe, causing it to fluoresce. Accordingly, the higher the fluorescence in the wells, the greater the cell death. After 48 hours of treatment, the cells are incubated for a minimum of 15 minutes in the presence of Celltox green reagent at room temperature and the fluorescence is read at λ emission 485 nm/λ eX citation 590 nm. The percentage of cell death is determined using the 100% cell death control (made from untreated cells incubated in the presence of the lysis solution for 30 minutes at 37°C before adding the Celltox green reagent), and the cell viability in each well is then deducted from this percentage. The IC 5 O is then determined as explained above.
[225] Les résultats des IC5o de ces tests sont présentés dans les Tableaux 1 a, 1 b et 1c. Dans ces tableaux : [225] The results of the CI 5 o of these tests are presented in Tables 1a, 1b and 1c. In these tables:
- a Le seuil de significativité a été calculé par comparaison du LogICso du composé au LogICso du DX101 avec min n=3 et un test de One-way ANOVA suivi d’un post-test de Dunn’s - a The significance threshold was calculated by comparing the LogICso of the compound to the LogICso of DX101 with min n=3 and a One-way ANOVA test followed by a Dunn's post-test
. nD représente le nombre de test indépendant avec 4 à 10 réplicats pour chaque condition. . n D represents the number of independent tests with 4 to 10 replicates for each condition.
[226] Tableau 1 a :
[226] Table 1 a:
229] Il est illustré dans les Tableaux 1 a, 1 b et 1c que pour le DX1 11 , l’IC5o est significativement inférieure (jusqu’à un facteur de 2,5) à celle du DX101 , indiquant une activité cytotoxique supérieure à celle du DX101. En outre, l’activité du DX123 a une tendance à être supérieure à celle du DX101 , et les activités du DX125, DX127 et du DX129 sont inférieures à celle du DX101 . 229] It is illustrated in Tables 1 a, 1 b and 1c that for DX1 11 , the IC 5 o is significantly lower (up to a factor of 2.5) than that of DX101 , indicating superior cytotoxic activity to that of the DX101. Also, the activity of DX123 tends to be higher than that of DX101, and the activities of DX125, DX127 and DX129 are lower than that of DX101.
[230] Exemple 26 : Étude de la cytotoxicité des analogues du DX101 selon l’invention sur les cellules BT-474 [230] Example 26: Study of the cytotoxicity of DX101 analogues according to the invention on BT-474 cells
[231] Les tests de viabilité cellulaires ont été réalisés également sur des cellules tumorales mammaires humaines BT-474 (caractérisée comme étant triples positives HER2+, ER+, PR+). Les cellules BT-474 sont dans un milieu de culture cellulaire identique à l’exemple précédent et sont ensemencées dans des plaques 24 puits à 70 000 cellules par puits, pour la détermination de la viabilité cellulaire à l’aide du bleu Trypan, ou dans des plaques 96 puits à 13 000 cellules par puits pour la détermination de la viabilité cellulaire à l’aide du test MTT ou LDH. Après 96 heures (h) de culture en condition normale, c’est-à-dire dans un incubateur à une température de 37 °C à 5 % d’O2, nous traitons pendant 48h les cellules BT-474 avec le DX101 , DX103, DX105, DX111 , DX123 et DX127 à 100 nM, 1 pM, 2.5 pM et 10 pM. Un contrôle est également réalisé en utilisant le protocole décrit précédemment sans traitement avec les molécules DX101 , DX103, DX105, DX11 1 , DX123 et DX127.
[232] Après une digestion à la trypsine de 10 minutes à 37°C, la survie cellulaire a été quantifiée également par un test de bleu de trypan avec comptage automatique par l’appareil Biorad TC20 (TC20™ Automated Cell Counter). Le test via le bleu de trypan est basé sur l’intégrité des membranes cellulaire, laquelle est rompue chez les cellules mortes. Le bleu de trypan colore les cellules mortes en bleu. L’appareil de comptage cellulaire Biorad TC20 compte la proportion de cellules bleues et non-bleues, et rapporte au pourcentage de cellules. Le pourcentage de viabilité est alors déterminé dans chaque puits par rapport au cellules non traitées et l’IC5o est déterminée comme expliqué dans l’exemple précédent. Les résultats sont représentés sur le Tableau 2. Également, le pourcentage de viabilité des cellules BT-474 a été déterminé à l’aide du test MTT et LDH, réalisé comme décrit dans l’exemple précédent. [231] Cell viability tests were also performed on BT-474 human mammary tumor cells (characterized as being triple positive HER2+, ER+, PR+). The BT-474 cells are in a cell culture medium identical to the previous example and are seeded in 24-well plates at 70,000 cells per well, for the determination of cell viability using Trypan blue, or in 96-well plates at 13,000 cells per well for determining cell viability using the MTT or LDH assay. After 96 hours (h) of culture under normal conditions, that is to say in an incubator at a temperature of 37°C at 5% O 2 , we treat the BT-474 cells for 48 hours with DX101, DX103, DX105, DX111, DX123 and DX127 at 100 nM, 1 pM, 2.5 pM and 10 pM. A control is also carried out using the protocol described previously without treatment with the molecules DX101, DX103, DX105, DX11 1 , DX123 and DX127. [232] After digestion with trypsin for 10 minutes at 37°C, cell survival was also quantified by a trypan blue test with automatic counting by the Biorad TC20 device (TC20™ Automated Cell Counter). The trypan blue test is based on the integrity of cell membranes, which is broken in dead cells. Trypan blue stains dead cells blue. The Biorad TC20 cell counting device counts the proportion of blue and non-blue cells, and reports the percentage of cells. The percentage of viability is then determined in each well with respect to the untreated cells and the IC 50 is determined as explained in the preceding example. The results are shown in Table 2. Also, the percentage viability of BT-474 cells was determined using the MTT and LDH assay, performed as described in the previous example.
[233] Les résultats sont représentés dans les Tableaux 2a, 2b et 2c. Dans ces tableaux : [233] The results are shown in Tables 2a, 2b and 2c. In these tables:
- a Le seuil de significativité a été calculé par comparaison du LogICso du composé au LogICso du DX101 avec min n=3 et un test de One-way ANOVA suivi d’un post-test de Dunn’s (excepté pour le test LDH où la p-value a été calculée par un t-test) - a The significance threshold was calculated by comparing the LogICso of the compound to the LogICso of DX101 with min n=3 and a One-way ANOVA test followed by a Dunn's post-test (except for the LDH test where the p -value was calculated by a t-test)
. nD représente le nombre de test indépendant avec 3 à 10 réplicas pour chaque condition. . n D represents the number of independent tests with 3 to 10 replicates for each condition.
[234] Tableau 2a :
[234] Table 2a:
[235] Tableau 2b :
[235] Table 2b:
[236] Tableau 2c :
[236] Table 2c:
[237] I est illustré dans les T ableaux 2a, 2b et 2c que l’activité des molécules DX103, DX105, DX11 1 et DX127 est similaire à celle du DX101 , et que celle du DX123 a la tendance à être supérieure à celle du DX101 dans cette lignée. Toutes ces molécules sont donc pressenties comme de bons candidats pour un développement industriel car elles ont des données de biologique similaires ou supérieures au DX101. [237] It is illustrated in Tables 2a, 2b and 2c that the activity of the molecules DX103, DX105, DX11 1 and DX127 is similar to that of DX101, and that that of DX123 tends to be higher than that of DX101 in this line. All these molecules are therefore considered to be good candidates for industrial development because they have biological data similar or superior to DX101.
[238] Exemple 27 : Effet du composé analogue DX111 sur la croissance tumorale in vivo [239] Toutes les procédures sur les animaux ont été conduites selon les directives de notre institution après avoir été approuvée par le comité d’éthique. Les cellules 4T1 ont, été cultivées comme précédemment, été dissociées dans la trypsine, lavées deux fois dans du PBS froid et re-suspendues dans du PBS à 1.5 million/ml. Les tumeurs 4T1 ont été obtenues par transplantation sous-cutanée de 0.150 million de cellules dans 100 pL dans le flanc de souris Balb/c femelle (9 semaines, Janvier). Quand les tumeurs ont atteint un volume de 50-100 mm3, les souris ont été gavées de 40 mg/kg de DX101 ou de 40 mg/kg
de DX11 1 ou du véhicule contrôle (eau). Le traitement a été réalisé tous les jours jusqu’à la fin de l’expérience (volume tumoral > 1000 mm3). Le volume tumoral a été déterminé tous les jours à l’aide d’un pied à coulisse et calculé à l’aide de la formule : 1/z X (Longueur * Largeur2). Le pourcentage d’inhibition de la croissance tumorale a été déterminé selon la formule suivante : 100 X (1 - (Volume tumoral, jour 7/ volume tumoral jour 0) Dxm) / (1 - (volume tumoral, jour 7/ volume tumoral jour 0) véhicule) . [238] Example 27: Effect of the analog compound DX111 on tumor growth in vivo [239] All animal procedures were conducted according to the guidelines of our institution after being approved by the ethics committee. The 4T1 cells were cultured as before, dissociated in trypsin, washed twice in cold PBS and resuspended in 1.5 million/ml PBS. 4T1 tumors were obtained by subcutaneous transplantation of 0.150 million cells in 100 µL into the flank of female Balb/c mice (9 weeks, January). When the tumors reached a volume of 50-100 mm 3 , the mice were force-fed with 40 mg/kg of DX101 or 40 mg/kg of DX11 1 or of the control vehicle (water). The treatment was carried out every day until the end of the experiment (tumor volume > 1000 mm 3 ). The tumor volume was determined daily using a caliper and calculated using the formula: 1 /z X (Length * Width 2 ). The percentage of tumor growth inhibition was determined according to the following formula: 100 X (1 - (Tumor volume, day 7/ tumor volume day 0) D xm) / (1 - (tumor volume, day 7/ tumor volume day 0) vehicle).
[240] La méthode de Kaplan-Meier a été utilisée pour comparer la survie des animaux. [240] The Kaplan-Meier method was used to compare animal survival.
[241] Il est illustré sur la Figure 7A que le DX1 11 présente un effet supérieur au DX101 sur la réduction de la croissance tumorale (**p<0.01 , test one-way ANOVA et post-test de Tukey). L’inhibition de la croissance tumorale à 7 jours a en outre été déterminée à 67 % pour les animaux traités au DX1 11 et à 48 % pour les animaux traités au DX101 . [241] It is illustrated in Figure 7A that DX1 11 has a greater effect than DX101 in reducing tumor growth (**p<0.01, one-way ANOVA test and Tukey post-test). Tumor growth inhibition at 7 days was further determined to be 67% for DX1 11-treated animals and 48% for DX101-treated animals.
[242] En outre, l’analyse de la survie des animaux, illustrée également sur la Figure 7B, indique une meilleure médiane de survie des animaux traités au DX1 11 (Log-rank Mantel- Cox test, *p<0.05 et ns, non significatif ; Logrank test for trend, **p<0.01 ). Également, on y observe que après 15 jours de traitements, la survie est de 25 % pour les animaux traités au DX1 11 alors qu’elle est de 0 % pour les animaux traités au DX101. La médiane de survie après traitement du DX101 (40 mg/kg) se situe à 9 jours alors que celle du DX1 11 (40 mg/kg) se situe à 10 jours. [242] In addition, analysis of animal survival, also shown in Figure 7B, indicates a better median survival of animals treated with DX1 11 (Log-rank Mantel-Cox test, *p<0.05 and ns, not significant; Logrank test for trend, **p<0.01). Also, it is observed that after 15 days of treatment, survival is 25% for animals treated with DX1 11 whereas it is 0% for animals treated with DX101. The median survival after treatment with DX101 (40 mg/kg) is 9 days while that of DX1 11 (40 mg/kg) is 10 days.
[243] En conclusion, l’effet du DX1 11 est beaucoup plus important in vivo sur l’inhibition de la croissance tumorale et influe fortement sur la survie des animaux. [243] In conclusion, the effect of DX1 11 is much greater in vivo on tumor growth inhibition and strongly influences animal survival.
[244] Exemple 28 : Étude pour déterminer la pharmacocinétique et la biodisponibilité du DX11 1 par voie orale chez le rat. [244] Example 28: Study to determine the pharmacokinetics and bioavailability of DX11 1 orally in rats.
[245] Protocole : L’étude a été réalisée sur quatre groupes décrits ci-après.
[245] Protocol: The study was carried out on four groups described below.
[246] Prélèvement plasmatique à 0 (sans injection), 15, 30min, 1 h, 4h, 8h, 24h, 48h, 72h[246] Plasma sampling at 0 (without injection), 15, 30min, 1h, 4h, 8h, 24h, 48h, 72h
[247] Les résultats sont donnés dans le Tableau 3 [247] The results are given in Table 3
[248] Tableau 3
[248] Table 3
[249] De façon surprenante, les résultats montrent que le composé ana ogue DX111 présente une biodisponibilité 3 fois supérieure au composé de référence DX101 en diminuant le temps de demi-vie d’élimination. La concentration maximale plasmatique obtenue avec le DX111 est 4 fois supérieure à celle du DX101 et la clairance est divisée par 2. [249] Surprisingly, the results show that the analog compound DX111 has a bioavailability 3 times greater than the reference compound DX101 by reducing the elimination half-life time. The maximum plasma concentration obtained with DX111 is 4 times higher than that of DX101 and clearance is halved.
[250] Bien que l'invention ait été décrite en liaison avec plusieurs modes de réalisation particuliers, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention. [250] Although the invention has been described in connection with several particular embodiments, it is obvious that it is in no way limited thereto and that it includes all the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.
L’usage du verbe « comporter », « comprendre » ou « inclure » et de ses formes conjuguées n’exclut pas la présence d’autres éléments ou d’autres étapes que ceux énoncés dans une revendication.
The use of the verb "to comprise", "to understand" or "to include" and of its conjugated forms does not exclude the presence of other elements or other steps than those set out in a claim.
Claims
[Revendication 1] Composé de formule (I) :
ou un sel pharmaceutiquement acceptable d’un tel composé, dans lequel : [Claim 1] Compound of formula (I): or a pharmaceutically acceptable salt of such a compound, in which:
Ri est choisi parmi : F, N3, OCnH2n+i, NR2R3, SR2, SO2R2, avec n < 8, R2 et R3 sont indépendamment choisis parmi : H, un groupement alkyle en C1 à C8, saturé ou insaturé, contenant éventuellement un ou plusieurs substituants choisis parmi des groupes allyle, carbonyle, arène et hétérocyclique, pour son utilisation en tant que médicament pour faire régresser une tumeur cancéreuse de mammifère. Ri is chosen from: F, N 3 , OC n H 2n+ i, NR2R3, SR2, SO2R2, with n < 8, R2 and R3 are independently chosen from: H, a C1 to C8 alkyl group, saturated or unsaturated, containing optionally one or more substituents selected from allyl, carbonyl, arene and heterocyclic groups, for its use as a medicament for regressing a mammalian cancerous tumor.
[Revendication 2] Composé selon la revendication 1 caractérisé en ce que le composé de formule (I) est un analogue O-aminé dans lequel le radical Ri = NR2R3 avec R2 étant H ou COCnH2n+i et R3 = H. [Claim 2] Compound according to Claim 1, characterized in that the compound of formula (I) is an O-amino analogue in which the radical Ri = NR2R3 with R2 being H or COC n H2n+i and R3 = H.
[Revendication 3] Composé pour son utilisation selon la revendication 1 ou 2, dans lequel le composé de formule (I) est le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-3p- acétamide. [Claim 3] A compound for its use according to claim 1 or 2, wherein the compound of formula (I) is 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-3p - acetamide.
[Revendication 4] Composé pour son utilisation selon la revendication 1 ou 2 dans lequel le composé de formule (I) est le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-3p- amino. [Claim 4] A compound for use according to claim 1 or 2 wherein the compound of formula (I) is 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-3p- amino.
[Revendication 5] Composé pour son utilisation selon la revendication 1 ou 2, dans lequel le composé de formule (I) est le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-3p- azoture. [Claim 5] A compound for its use according to claim 1 or 2, wherein the compound of formula (I) is 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-3p - azide.
[Revendication 6] Composé pour son utilisation selon la revendication 1 , dans lequel le composé de formule (I) est le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-fluoro. [Claim 6] A compound for its use according to claim 1, wherein the compound of formula (I) is 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p -fluoro.
[Revendication 7] Composé pour son utilisation selon la revendication 1 , dans lequel le composé de formule (I) est un analogue O-alkylé et est choisi parmi : [Claim 7] Compound for its use according to claim 1, in which the compound of formula (I) is an O-alkyl analogue and is chosen from:
- le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-méthoxyle - 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-methoxyl
- le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-éthoxyle
- le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]-cholestan-3p-octanoxyle. - 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-ethoxyl - 5α-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p-octanoxyl.
[Revendication 8] Composé pour son utilisation selon la revendication 1 , dans lequel le composé de formule (I) est le 5a-hydroxy-6p-[2-(1 H-imidazol-4-yl)-éthylamino]- cholestan-3p-méthylsulfonyle. [Claim 8] A compound for its use according to claim 1, wherein the compound of formula (I) is 5a-hydroxy-6p-[2-(1H-imidazol-4-yl)-ethylamino]-cholestan-3p -methylsulfonyl.
[Revendication 9] Composé pour son utilisation selon l’une des revendications 1 à 8, dans lequel la tumeur cancéreuse est un cancer chimiosensible. [Claim 9] A compound for its use according to one of claims 1 to 8, in which the cancerous tumor is a chemosensitive cancer.
[Revendication 10] Composé pour son utilisation selon l’une des revendications 1 à 8, dans lequel la tumeur cancéreuse est un cancer chimiorésistant. [Claim 10] A compound for its use according to one of claims 1 to 8, in which the cancerous tumor is a chemoresistant cancer.
[Revendication 11 ] Composé pour son utilisation selon la revendication 10 dans lequel le cancer chimiorésistant est un cancer hématologique ou du sang, tel que la leucémie, en particulier la leucémie myéloïde aiguë ou la leucémie lymphocytaire aiguë, le lymphome, en particulier le lymphome non-hodgkinien et le myélome multiple. [Claim 11] A compound for its use according to claim 10 in which the chemoresistant cancer is a hematological or blood cancer, such as leukemia, in particular acute myeloid leukemia or acute lymphocytic leukemia, lymphoma, in particular lymphoma not -Hodgkin syndrome and multiple myeloma.
[Revendication 12] Composé pour son utilisation selon l’une des revendications 10 et 1 1 dans lequel ledit cancer est chimiorésistant à la daunorubicine, à la cytarabine, au fluorouracile, au cisplatine, à l’acide tout-trans-rétinoïque, au trioxyde d’arsenic, au bortézomib ou à l’une de leurs combinaisons. [Claim 12] A compound for use according to one of claims 10 and 1 1 wherein said cancer is chemoresistant to daunorubicin, cytarabine, fluorouracil, cisplatin, all-trans-retinoic acid, trioxide arsenic, bortezomib or a combination thereof.
[Revendication 13] Composition pharmaceutique comprenant dans un véhicule pharmaceutiquement acceptable, au moins un composé selon l’une des revendications 1 à 8 pour son utilisation pour faire régresser une tumeur cancéreuse de mammifère. [Claim 13] Pharmaceutical composition comprising, in a pharmaceutically acceptable vehicle, at least one compound according to one of Claims 1 to 8 for its use in regressing a cancerous tumor of a mammal.
[Revendication 14] Composition pharmaceutique pour son utilisation selon la revendication 13, comprenant en outre au moins un autre agent thérapeutique. [Claim 14] Pharmaceutical composition for its use according to claim 13, further comprising at least one other therapeutic agent.
[Revendication 15] Composition pharmaceutique pour son utilisation selon la revendication 14, dans laquelle l’autre agent thérapeutique est un agent antinéoplasique. [Claim 15] A pharmaceutical composition for use according to claim 14, wherein the other therapeutic agent is an antineoplastic agent.
[Revendication 16] Composition pharmaceutique pour son utilisation selon la revendication 13 pour son utilisation dans le traitement du cancer chez un patient souffrant d’une tumeur qui est chimiorésistante audit agent antinéoplasique lorsqu’il n’est pas administré en combinaison avec un composé selon l’une des revendications 1 à 8. [Claim 16] A pharmaceutical composition for use according to claim 13 for use in the treatment of cancer in a patient suffering from a tumor which is chemoresistant to said antineoplastic agent when not administered in combination with a compound according to claim 16. one of claims 1 to 8.
[Revendication 17] Composition pharmaceutique pour son utilisation selon la revendication 13 pour son utilisation dans le traitement du cancer chez un patient souffrant d’une tumeur qui est chimiosensible audit agent antinéoplasique, dans laquelle la dose de l’agent antinéoplasique administré audit patient en combinaison avec un composé selon l’une des revendications 1 à 8 ou l’un de ses sels pharmaceutiquement acceptables est inférieure à la dose de l’agent antinéoplasique
lorsqu’il n’est pas administré en combinaison avec un composé selon l’une des revendications 1 à 8. [Claim 17] A pharmaceutical composition for use according to claim 13 for use in the treatment of cancer in a patient suffering from a tumor which is chemosensitive to said antineoplastic agent, wherein the dose of the antineoplastic agent administered to said patient in combination with a compound according to one of claims 1 to 8 or one of its pharmaceutically acceptable salts is lower than the dose of the antineoplastic agent when it is not administered in combination with a compound according to one of claims 1 to 8.
[Revendication 18] Composition pharmaceutique selon l’une des revendications 13 à 17, caractérisée par le fait qu’elle est sous forme appropriée pour être administrée par toutes voies, de préférence par voie intraveineuse, sous-cutanée, intrapéritonéale ou orale.
[Claim 18] Pharmaceutical composition according to one of Claims 13 to 17, characterized in that it is in a form suitable for administration by any route, preferably intravenously, subcutaneously, intraperitoneally or orally.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE20205764A BE1028754B1 (en) | 2020-10-29 | 2020-10-29 | 5α-Hydroxy-6β-[2-(1H-imidazol-4-yl)ethylamino]cholestan-3β-ol ANALOGS AND PHARMACEUTICAL COMPOSITIONS COMPRISING THEM FOR USE IN THE TREATMENT OF CANCER |
BE20205878A BE1028852B1 (en) | 2020-12-03 | 2020-12-03 | 5α-Hydroxy-6β-[2-(1H-imidazol-4-yl)ethylamino]cholestan-3β-ol PRODRUG AND PHARMACEUTICAL COMPOSITIONS COMPRISING THEM FOR USE IN THE TREATMENT OF CANCER |
PCT/EP2021/080054 WO2022090427A1 (en) | 2020-10-29 | 2021-10-28 | 5alpha-hydroxy-6beta-[2-(1-h-imidazol-4-yl)-ethylamino]-cholestan-3beta-ol analogues and pharmaceutical compositions comprising same for use in the treatment of cancer |
Publications (1)
Publication Number | Publication Date |
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EP4236963A1 true EP4236963A1 (en) | 2023-09-06 |
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ID=78483311
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Application Number | Title | Priority Date | Filing Date |
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EP21801547.7A Pending EP4236963A1 (en) | 2020-10-29 | 2021-10-28 | 5alpha-hydroxy-6beta-[2-(1-h-imidazol-4-yl)-ethylamino]-cholestan-3beta-ol analogues and pharmaceutical compositions comprising same for use in the treatment of cancer |
Country Status (7)
Country | Link |
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US (1) | US20230391817A1 (en) |
EP (1) | EP4236963A1 (en) |
JP (1) | JP2023551363A (en) |
KR (1) | KR20230097077A (en) |
AU (1) | AU2021372797A1 (en) |
CA (1) | CA3196518A1 (en) |
WO (1) | WO2022090427A1 (en) |
Family Cites Families (1)
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US10188666B2 (en) | 2013-09-04 | 2019-01-29 | Affichem | Dendrogenin A and antineoplastic agents for the treatment of chemosensitive or chemoresistant tumors |
-
2021
- 2021-10-28 CA CA3196518A patent/CA3196518A1/en active Pending
- 2021-10-28 EP EP21801547.7A patent/EP4236963A1/en active Pending
- 2021-10-28 WO PCT/EP2021/080054 patent/WO2022090427A1/en active Application Filing
- 2021-10-28 US US18/034,317 patent/US20230391817A1/en active Pending
- 2021-10-28 JP JP2023526224A patent/JP2023551363A/en active Pending
- 2021-10-28 KR KR1020237017165A patent/KR20230097077A/en active Search and Examination
- 2021-10-28 AU AU2021372797A patent/AU2021372797A1/en active Pending
Also Published As
Publication number | Publication date |
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US20230391817A1 (en) | 2023-12-07 |
WO2022090427A1 (en) | 2022-05-05 |
KR20230097077A (en) | 2023-06-30 |
CA3196518A1 (en) | 2022-05-05 |
AU2021372797A9 (en) | 2024-10-03 |
AU2021372797A1 (en) | 2023-06-15 |
JP2023551363A (en) | 2023-12-08 |
AU2021372797A2 (en) | 2023-06-29 |
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