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EP1740558A1 - Benzoxazocines et utilisation therapeutique de celles-ci comme inhibiteurs du recaptage de la monoamine - Google Patents

Benzoxazocines et utilisation therapeutique de celles-ci comme inhibiteurs du recaptage de la monoamine

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Publication number
EP1740558A1
EP1740558A1 EP05736028A EP05736028A EP1740558A1 EP 1740558 A1 EP1740558 A1 EP 1740558A1 EP 05736028 A EP05736028 A EP 05736028A EP 05736028 A EP05736028 A EP 05736028A EP 1740558 A1 EP1740558 A1 EP 1740558A1
Authority
EP
European Patent Office
Prior art keywords
methyl
tetrahydro
oxazocine
benz
phenyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05736028A
Other languages
German (de)
English (en)
Inventor
Andrew Douglas Sosei R&D Ltd. BAXTER
Andrea Sosei R&D Ltd. WALMSLEY
Elena Sosei R&D Ltd. Lasterra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sosei R&D Ltd
Original Assignee
Arakis Ltd
Sosei R&D Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0408863A external-priority patent/GB0408863D0/en
Priority claimed from GB0408862A external-priority patent/GB0408862D0/en
Application filed by Arakis Ltd, Sosei R&D Ltd filed Critical Arakis Ltd
Publication of EP1740558A1 publication Critical patent/EP1740558A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
    • C07D413/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/12—Antidiarrhoeals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/04—Centrally acting analgesics, e.g. opioids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/06—Antimigraine agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/24—Antidepressants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
    • A61P25/36—Opioid-abuse
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D273/00—Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00

Definitions

  • This invention relates to novel benzoxazocine compounds which inhibit monoamine reuptake.
  • compounds of the present invention exhibit activity as analgesic agents and also as anti-emetics but also may find utility in a range of other therapeutic indications.
  • Background of the Invention Nefopam, i.e. 5-methyl-1-phenyl-3,4,5,6-tetrahydro-1 H-2,5-benzoxazocine hydrochloride, is a centrally acting non-narcotic analgesic.
  • WO03/092689 discloses that the single enantiomers of nefopam are useful for the treatment of pain and emesis.
  • WO2004/056788 discloses derivatives of nefopam. Its publication date is later than the priority dates now claimed. Summary of the Invention Novel compounds according to this invention are of general formula (1):
  • Ri is H, C ⁇ -C 6 alkyl optionally substituted with F or C 3 -C 6 cycloalkyl or C 2 -C 4 alkenyl;
  • A is O, CH 2 or S(O) n where n is 0-2; one of W, X, Y and Z is N, CH or CR 3 and the others are CH;
  • R 2 is C 5 -C 6 heteroaryl, C 5 -C ⁇ 0 cycloalkyl or cycloalkenyl optionally containing one or more heteroatoms selected from O, N and S(O) n where n is 0-2, and optionally substituted with R 3 ; or a phenyl group optionally substituted in one or more positions with one or more substituents independently selected from halogen, CN, CF 3 , CrC 6 alkyl and OR L or the phenyl group is fused to a five or six membered ring which may be carbocyclic, heterocyclic (containing 1-2 heteroatoms
  • Ri is H, CrC 6 alkyl, optionally substituted with F or C 3 -C 6 cycloalkyl or C 2 -C 6 alkenyl; either R 2 and R 3 are the same or different and are H, a halogen, CN, CF 3 , C C 6 alkyl or OR ⁇ or R 2 and R 3 form a five or six membered ring which may be carbocyclic, heterocyclic (containing 1-2 heteroatoms taken from O, N or S), aromatic or heteroaromatic (containing 1-2 heteroatoms taken from O and N) ; one of W, X, Y and Z is N, or CR 4 and the others are each CH; R 4 is a halogen atom, CF 3 , CN, OR 7l SO 2 N(R 6 ) 2 , COR 6 , CO 2 R 6 , CON(R 6 ) 2 , NR ⁇ ORs, N ⁇ SO ⁇ Rs, N ⁇ CO ⁇ Rs, NR.
  • Compounds of the invention have utility as therapeutic agents. Compositions containing them and their therapeutic uses are further aspects of the invention. Further, compounds of formula (1) wherein R 3 is a halogen atom such as Br are useful as intermediates. Description of Preferred Embodiments It will be appreciated that compounds according to the invention contain an asymmetrically substituted carbon atom. The presence of this asymmetric centre in a compound of formula (1) can give rise to stereoisomers, and in each case the invention is to be understood to extend to all such stereoisomers, including enantiomers and diastereomers, and mixtures including racemic and non-racemic mixtures thereof.
  • C ⁇ -C 6 alkyl refers to a straight or branched chain alkyl moiety having from one to six carbon atoms, including, for example, methyl, ethyl, propyl, isopropyl, butyl, fe/f-butyl, pentyl, hexyl and the like.
  • C 5 -C 6 heteroaryl refers to an aryl system of five or six atoms, of which at least one atom is selected from O, N and S. This term includes, for example, pyridine, tetrahydropyran etc.
  • C 2 -C 6 alkenyl refers to a straight or branched chain alkyl moiety having two to six carbon atoms and having in addition one double bond, of either E or Z stereochemistry where applicable. This term includes, for example, vinyl, 1-propenyl, 1- and 2-butenyl, 2-methyl-2-propenyl etc.
  • C 2 -C 6 alkynyl refers to a straight or branched chain alkyl moiety having two to six carbon atoms and having in addition one triple bond. This term includes, for example, ethynyl, 1-propargyl, 1- and 2-butynyl etc.
  • C 3 -C 6 cycloalkyl refers to a saturated alicyclic moiety having from three to six carbon atoms and includes, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and the like.
  • C5-C10 cycloalkenyl refers to an unsaturated alicyclic moiety having from five to ten carbon atoms and at least one double bond and includes, for example, phenyl and the like.
  • aryl means an optionally substituted phenyl or naphthyl group.
  • Carbocyclic refers to a saturated alicyclic moiety having five or six carbon atoms and includes, for example, benzofused cyclopentyl and cyclohexyl and the like.
  • heterocyclic refers to a saturated heterocyclic moiety having from five or six atoms but containing one or more heteroatom selected from N, O and S, and includes, for example, benzofused pyrrolidinyl, tetrahydrofuranyl, piperidinyl, dioxalane and the like.
  • heteromatic refers to aromatic ring systems of five or six atoms of which at least one atom is selected from O, N and S, and includes, for example, pyrrolyl, pyridinyl, diazolyl, diazinyl, triazolyl, triazinyl, tetrazolyl, furanyl, oxazolyl, isoxazolyl or oxadiazolyl as well as benzofused furanyl, thiophenyl, pyridyl, indolyl, pyridazinyl, piperazinyl, pyrimidinyl and the like, e.g.
  • halogen means fluorine, chlorine, bromine or iodine.
  • Compounds of the general formula (1) may be prepared by any suitable method known in the art and/or by the processes described below. It will be appreciated that where a particular stereoisomer of formula (1) is required, the synthetic processes described herein may be used with the appropriate homochiral starting material and/or isomers maybe resolved from mixtures using conventional separation techniques (eg. HPLC).
  • variables such as R ⁇ , R 2 , R 3 , R 4 , R 5 , A, W, X, Y and Z are as defined above, except where otherwise indicated.
  • functional groups such as amino, hydroxyl or carboxyl groups, present in the various compounds described below, and which it is desired to retain, may need to be in protected form before any reaction is initiated. In such instances, removal of the protecting group may be the final step in a particular reaction. Suitable protecting groups for such functionality will be apparent to those skilled in the art. For specific details, see “Protective Groups in Organic Synthesis", Wiley Interscience, T W Greene, PGM Wuts.
  • a process for preparing compounds of general formula (1), where W, X, Y or Z is N or C-Br and A is O or S(O) n comprises cyclisation with acid (for instance with p- toluenesulphonic acid) of a diol (2) which can in turn be obtained by reduction of ketone (3) with a suitable reducing agent.
  • keto amide of general formula (3) can be carried out with reagents well known to those familiar in the art of synthetic organic chemistry.
  • An example of a highly reactive reducing agent is lithium aluminium hydride, although reagents based on borane (e.g. borane.tetrahydrofuran complex) or modified sodium borohydride reduction (e.g. with a nickel or cobalt salt enhancer) may be equally effective.
  • reagents (3) for example with sodium borohydride, followed by acid cyclisation, for example with p-toluenesulphonic acid, then ultimate reduction of the amide group, for example with borane, also leads to compounds of general formula (1).
  • Ketones (3) can be prepared by condensation of a carboxylic acid (4) or an active derivative thereof, with an amine (5). Active derivatives of acids of formula (4) include, for example, acid anhydrides or acid halides, such as acid chlorides.
  • the coupling reaction may be performed using standard conditions for amidation reactions of this type.
  • the reaction may be achieved in a solvent, for example an inert organic solvent such as an ether, e.g. a cyclic ether such as tetrahydrofuran, an amide, e.g. a substituted amide such as dimethylformamide, or a halogenated hydrocarbon such as dichloromethane at low temperature, e.g. -30°C to ambient temperature, such as -20°C to 0°C, optionally in the presence of as base, e.g. an organic base such as an amine, e.g. triethylamine or a cyclic amine such as N- methylmorpholine.
  • an inert organic solvent such as an ether, e.g. a cyclic ether such as tetrahydrofuran
  • an amide e.g. a substituted amide such as dimethylformamide
  • a halogenated hydrocarbon
  • the reaction may additionally be performed in the presence of a condensing agent, for example a diimide such as ⁇ /. ⁇ / 1 - dicyclohexylcarbodiimide, advantageously in the presence of a triazole such as 1- hydroxybenzotriazole.
  • a condensing agent for example a diimide such as ⁇ /. ⁇ / 1 - dicyclohexylcarbodiimide, advantageously in the presence of a triazole such as 1- hydroxybenzotriazole.
  • the acid may be reacted with a chloroformate, for example ethyl chloroformate, prior to reaction with the amine (5).
  • Acids (4) may be prepared by Friedel-Crafts acylation of R 2 with an anhydride (7). This reaction is carried out in an inert solvent (such as dichloromethane) in the presence of a Lewis acid catalyst (such as aluminium trichloride).
  • Compounds of general formula (1) where one of W, X, Y and Z is C-hal such as C-Br represent flexible intermediates that may be used for the preparation of other compounds of general formula (1).
  • a suitable azide donor such as sodium azide or trimethylsilylazide.
  • compounds of general formula (1) where one of W, X, Y and Z is C- hal such as C-Br can be lithiated with n-, sec- or fe f-butyllithium in an inert organic solvent such as an ether, e.g. a cyclic ether such as tetrahydrofuran, at very low temperature, e.g. -78 °C.
  • Treatment with either a carbon e.g. carbon dioxide, N,N- dimethylformamide or paraformaldehyde
  • sulphur e.g. SO 2 CI 2 , followed by amidation, such as with ammonia
  • nitrogen diphenylphosphoryl azide, followed by reduction, such as with REDAL
  • R 3 is CO 2 R 5 , CON(R 5 ), CH 2 OR 5 , SO 2 N(R 4 ) 2 , NR 1 COR , NR 1 CO 2 R 5 or NR 1 CON(R 5 ) 2 .
  • compounds of general formula (1) where one or W, X, Y and Z is C- hal such as C-Br can undergo palladium-catalysed coupling reactions with carbon-based coupling partners.
  • R 3 is optionally substituted C 2 -C 6 alkenyl or C 2 -C 6 alkynyl, or a five-membered aromatic heterocycle containing 1-4 heteroatoms selected from N (such as in pyrrole, diazoles, triazoles or tetrazoles) and O (such as in furan, oxazoles or oxadiazoles).
  • N such as in pyrrole, diazoles, triazoles or tetrazoles
  • O such as in furan, oxazoles or oxadiazoles
  • additional compounds of formula (1) may be prepared by interconversion of other compounds of formula (1).
  • a compound wherein R 3 is alkyl may be prepared by hydrogenation (using palladium on carbon in a suitable solvent, such as an alcohol, e.g.
  • This invention also relates to a method of treatment for patients (including man and/or mammalian animals raised in the dairy, meat or fur industries or as pets) suffering from disorders or diseases which can be attributed to monoamine reuptake as previously described, and more specifically, a method of treatment involving the administration of the monoamine reuptake inhibitor of formula (1) as the active constituents.
  • the compounds of formula (1) can be used in the treatment of pain and emesis. Pain and related conditions that can be treated include syndromes characterised by chronic pain and fatigue, fibromyalgia, chronic fatigue syndrome, complex regional pain syndrome, irritable bowel syndrome, myofacial pain and atypical chest pain.
  • the compounds may also find utility in a range of other therapeutic indications such as depression, post-traumatic stress disorders, attention-deficit disorders, obsessive-compulsive disorders, pre-menstrual syndrome, substance abuse and sexual dysfunction; a method of management (by which is meant treatment or prophylaxis) of disease or conditions mediated by monoamine reuptake in mammals, in particular in humans, which method comprises administering to the mammal an effective, amount of a compound of formula (1) above, or a pharmaceutically acceptable salt thereof; and a compound of formula (1) for use in human or veterinary medicine, particularly in the management (by which is meant treatment or prophylaxis) of diseases or conditions mediated by monoamine reuptake; and the use of a compound of formula (1) in the preparation of an agent for the management (by which is meant treatment or prophylaxis) of diseases or conditions mediated by monoamine reuptake.
  • a method of management by which is meant treatment or prophylaxis of disease or conditions mediated by monoamine reuptake in mammals
  • the disease or conditions referred to above include pain, emesis, depression, post-traumatic stress disorders, attention-deficit disorders, obsessive-compulsive disorders, pre-menstrual syndrome, substance abuse and sexual dysfunction.
  • Compounds of formula (1) may be administered orally, topically, buccally, ocularly, rectally, vaginally, parenterally, intra-nasally, sublingually or by inhalation spray, e.g. in dosage unit formulations containing non-toxic pharmaceutically acceptable carriers, adjuvants and vehicles.
  • parenteral as used herein includes subcutaneous injections, intravenous, intramuscular, intrasternal injection or infusion techniques.
  • the pharmaceutical composition containing the active ingredient may be in a form suitable for oral use, for example, as tablets, troches, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsions, hard or soft capsules, or syrups or elixirs.
  • the composition may be in immediate or controlled release form.
  • compositions intended for oral use may be prepared according to any method known to the art for the manufacture of pharmaceutical compositions and such compositions may contain one or more agents selected from the group consisting of sweetening agents, flavouring agents, colouring agents and preserving agents in order to provide pharmaceutically elegant and palatable preparations.
  • Tablets contain the active ingredient in admixture with non-toxic pharmaceutically acceptable excipients which are suitable for the manufacture of tablets.
  • excipients may be for example, inert diluents, such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example corn starch, or alginic acid; binding agents, for example starch, gelatin or acacia, and lubricating agents, for example magnesium stearate, stearic acid or talc.
  • the tablets may be uncoated or they may be coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period.
  • a time delay material such as glyceryl monostearate or glyeryl distearate may be employed.
  • Formulations for oral use may also be presented as hard gelatin capsules where in the active ingredient is mixed with an inert solid diluent, for example calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin or olive oil.
  • Aqueous suspensions contain the active materials in admixture with excipients suitable for the manufacture of aqueous suspensions.
  • excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia; dispersing or wetting agents may be a naturally occurring phosphatide, for example lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters dervied from fatty acids and a hexitol such a polyoxyethylene with partial esters derived from fatty acids and hexitol anhydrides, for example polyoxyethylene sorbitan monooleate.
  • dispersing or wetting agents may be a naturally occurring phosphatide, for example lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate
  • the aqueous suspensions may also contain one or more preservatives, for example ethyl or n-propyl p-hydroxybenzoate, one or more colouring agents, one or more flavouring agents, and one or more sweetening agents, such as sucrose or saccharin.
  • Oily suspensions may be formulated by suspending the active ingredient in a vegetable oil, for example arachis oil, olive oil, sesame oil or coconut oil, or in a mineral oil such as liquid paraffin.
  • the oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those set forth above, and flavouring agents may be added to provide a palatable oral preparation.
  • compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
  • Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, suspending agent and one or more preservatives. Suitable dispersing or wetting agents and suspending agents are exemplified, for example sweetening, flavouring and colouring agents, may also be present.
  • the pharmaceutical compositions of the invention may also be in the form of oil- in-water emulsions.
  • the oily phase may be a vegetable oil, for example olive oil or arachis oil, or a mineral oil, for example liquid paraffin or mixtures of these.
  • Suitable emulsifying agents may be naturally-occuring gums, for example gum acacia or gum tragacanth, naturally occurring phosphatides, for example soya bean, lecithin, and esters or partial esters derived from fatty acids and hexitol anhydrides, for example sorbitan monooleate and condensation products of the said partial esters with ethylene oxide, for example polyoxyethylene sorbitan monooleate.
  • the emulsions may also contain sweetening and flavouring agents. Syrups and elixirs may be formulated with sweetening agents, for example gycerol, propylene glycol, sorbitol or sucrose.
  • Such formulations may also contain a demulcent, a preservative and flavouring and colouring agents.
  • the pharmaceutical compositions may be in the form of a sterile injectable aqueous or oleagenous suspension. This suspension may be formulated according to the known art using those suitable dispersing or wetting agents and suspending agents which have been mentioned above.
  • the sterile injectable preparation may also be in a sterile injectable solution or suspension in a non-toxic parenterally-acceptable diluent or solvent, for example as a solution in 1, 3-butanediol.
  • the acceptable vehicles and solvents that may be employed are water, Ringer's solution and isotonic sodium chloride solution.
  • sterile, fixed oils are conventionally employed as a solvent or suspending medium.
  • any bland fixed oil may be employed including synthetic mono- or diglycerides.
  • fatty acids such as oleic acid find use in the preparation of injectables.
  • the compounds of formula (1) may 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 ordinary temperatures but liquid at the rectal temperature and will therefore melt in the rectum to release the drug.
  • a suitable non-irritating excipient which is solid at ordinary temperatures but liquid at the rectal temperature and will therefore melt in the rectum to release the drug.
  • Such materials are cocoa butter and polyethylene glycols.
  • creams, ointments, jellies, solutions or suspensions, etc containing the compounds of Formula (1) are employed.
  • topical application includes mouth washes and gargles.
  • Dosage levels of the order of from about 0.05 mg to about 140 mg per kilogram of body weight per day are useful in the treatment of the above-indicated conditions (about 2.5 mg to about 7 g per patient per day).
  • emesis may be effectively treated by the administration of from about 0.01 to 50 mg of the compound per kilogram of body weight per day (about 0.5 mg to about 3.5 g per patient per day).
  • the amount of active ingredient that may be combined with the carrier materials to produce a single dosage form will vary depending upon the host treated and the particular mode of administration.
  • a formulation intended for the oral administration of humans may vary from about 5 to about 95 percent of the total composition.
  • Dosage unit forms will generally contain between from about 1 mg to about 500 mg of an active ingredient. It will be understood, however, that the specific dose level for any particular patient will depend upon a variety of factors including the activity of the specific compound employed, the age, body weight, general health, sex, diet time of administration, route of administration, rate of excretion, drug combination and the severity of the particular disease undergoing therapy.
  • the following Examples illustrate the invention. They include compounds which are in the following Table.
  • Example 3 5-Cyclopropyl-1-phenyl-1,3,4,6-tetrahydro-5H-benz[f
  • Example 7 ⁇ -Pyridy -S-methyl-l-tS-methoxy ⁇ phenyl-I.S. ⁇ -tetrahydro-SH-benztfJ ⁇ .S- oxazocine 8-Bromo-5-methyl-1-(3-methoxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine, i.e. compound 21b in WO2004/056788 (117 mg, 0.32 mmol), pyridine-4- boronic acid (52 mg, 0.42 mmol), Pd(PPh 3 ) 4 (10 mol%) and KOH (2M solution in water, 0.48 ml) were suspended in DME (2 ml).
  • the mixture was degassed and then purged with nitrogen before heating at reflux temperature under a nitrogen atmosphere for 17 hours.
  • the mixture was allowed to cool to RT and diluted with ethyl acetate (20 ml) and washed with water (20 ml).
  • the aqueous phase was extracted into ethyl acetate (2 x 20 ml) and the combined organic extracts were dried (MgSO 4 ), filtered and concentrated in vacuo. Purification by silica gel column chromatography (EtOAc-»10% MeOH/EtOAc) furnished the target compound as a pale yellow oil (25 mg, 22%).
  • Example 9 5-Methyl-1 -(3-methoxy)phenyl-1.S. ⁇ -tetrahydro-SH-benzCfl ⁇ S-oxazocine 8-Bromo-5-methyl-1-(3-methoxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine, i.e. compound 21b in WO2004/056788 (206 mg, 0.57mmol), was suspended in toluene (3 ml) and degassed under vacuum, then purged with nitrogen. Palladium tetrakis (33 mg) was added to the mixture, which was then subjected to the degassing/nitrogen purge sequence again.
  • Example 12 7-Fluoro-5-methyl-1-phenyl-1,3,4,6-tetrahydro-5H-benz[f
  • 2- ⁇ [2-fluoro-6-(hydroxyphenyl-methyl)benzyl]methylamino ⁇ ethanol (20 mg, 0.069 mmol) was dissolved in toluene and pTSA (20 mg, 0.1 mmol) added.
  • the mixture was heated to 120°C in an open vessel to allow evaporation of the solvent. After 30 mins, a gummy residue remained in the reaction vessel.
  • the vessel was allowed to cool and the residue dissolved in ethyl acetate (5 ml) and sat. aq. sodium bicarbonate solution (10 ml).
  • dichloromethane was then removed in vacuo.
  • Dichloromethane (2 x 500 ml) was added to the crude oil and evaporated in vacuo.
  • the crude acid chloride was dissolved in dichloromethane (900 ml), cooled to 0°C (ice bath) and triethylamine (81 ml, 0.57 mol) added dropwise.
  • N- methylethanolamine (42.8 g, 0.57 mol) was then added dropwise and the mixture left to warm to RT overnight under an atmosphere of nitrogen. The mixture was then quenched with brine (800 ml) and the layers separated.
  • Example 15 8-Cyano-5-methyl-1-(3-hydroxy)phenyl-1,3,4,6-tetrahydro-5H-benz[fJ-2,5-oxazocine 8-Bromo-5-methyl-1-(3-hydroxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine (100 mg, 0.29 mmol), Zn (1 mg, 0.02 mmol), Zn(OAc) 2 (7 mg, 0.034 mmol), Zn(CN) 2 (25 mg, 0.22 mmol), Pd 2 (dba) 3 (37 mg, 0.04 mmol) and 1,1'- bis(diphenylphosphino)ferrocene (18 mg, 0.034 mmol) were heated to 140°C in DMF (3 ml) and H 2 O (30 ⁇ l) for 4h.
  • Example 18 8-Cyano-5-methyl-1-(3-allyloxy)phenyl-1,3,4,6-tetrahydro-5H-benz[fI-2,5-oxazocine 8-Cyano-5-methyl-1-(3-hydroxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine (50 mg, 0.17 mmol), allyl alcohol (49 mg, 0.68 mmol), Pd(OAc) 2 (1 mg, 0.0035 mmol), triphenylphosphine (2 mg, 0.0075 mmol), Ti(O j Pr) (20 mg, 0.07 mmol), molecular sieves (4 A, 40 mg) were heated at 50°C in benzene (2 ml) overnight.
  • the reaction mixture was then concentrated in vacuo and co-evaporated with dichloromethane (2 x 200 ml) to provide the crude acid chloride. This was dissolved in dichloromethane (200 ml), cooled to 0°C, and triethylamine (15.35 ml, 11.22 g, 108.35 mmol) was added dropwise, followed by ⁇ /-methy!ethanolamine and the mixture left to warm to RT overnight. The reaction was then quenched with brine and extracted with dichloromethane. The combined organic extracts were dried (MgSO ), filtered and concentrated in vacuo to give the crude amide as a mixture of regioisomers.
  • Example 20 8-Bromo-5-methyl-1 -(2-methyl-3-methoxy)phenyl-1 ,3,4 . 6-tetrahydro-5H-benz[f]-2,5- oxazocine 2-( ⁇ 5-bromo-2-[hydroxyl-(3-methoxy-2-methylphenyl)-methyl]-benzyl ⁇ - methylamino)-ethanol (5 g, 12.6 mmol) was heated to reflux temperature in toluene (250 ml) with pTSA (3.65 g, 18.95 mmol) under Dean-Stark conditions for 4 hours. The reaction mixture was allowed to cool to RT, diluted with ethyl acetate (200 ml) and washed with a sat.
  • Example 22 8-Cyclopropyl-5-methyl-1-(2-methyl-3-methoxy)phenyl-1,3,4,6-tetrahydro-5H- benz[f
  • Example 25 ⁇ -Methyl-1-(3-methoxy-4-methyl)phenyl-1,3,4,6-tetrahydro- ⁇ H-benz[f]-2, ⁇ - oxazocine- ⁇ -carboxamide 8-Cyano-5-methyl-1-(3-methoxy-4-methyl)phenyl-1,3,4,6-tetrahydro-5H-benz[f]- 2,5-oxazocine (1.1 g, 3.56 mmol) was heated to reflux temperature in f BuOH (24 ml) with potassium hydroxide (0.29 mg, 5.34 mmol) for 2 h. At the end of this time, the reaction mixture was allowed to cool to RT.
  • 2,5-oxazocine 154 mg, 0.41 mmol
  • cyclopropylboronic acid 46 mg, 0.53 mmol
  • P(cyclohexane) 3 11 mg, 0.041 mmol
  • KsPO 304 mg, 1.43 mmol
  • Pd(OAc) 2 5 mg, 0.02 mmol
  • the reaction mixture was allowed to cool and then diluted with ethyl acetate (30ml).
  • the organic mixture was washed with water (30 ml) and the aqueous phase extracted into ethyl acetate (3 x 20 ml).
  • Example 27 9-Bromo-5-methyl-1-(3,4-methylenedioxy)phenyl-1,3,4,6-tetrahydro- ⁇ H-benz[f]-2, ⁇ - oxazocine 2- ⁇ [2-(Benzo-[1,3]-dioxol-yl-hydroxymethyl)-4-bromobenzyl]-methylamino ⁇ - ethanol (148 mg, 0.38 mmol) was heated to reflux temperature with pTSA (107 mg, 0.56 mmol) in toluene (3 ml) under Dean-stark conditions for 3 hours. The mixture was then cooled, diluted with ethyl acetate and washed with sat. aq. sodium bicarbonate solution.
  • Example 28 9-Cyano-5-methyl-1 -(3,4-methylenedioxy)phenyl-1 ,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine
  • a solution of 9-bromo-5-methyl-1-(3,4-methylenedioxy)phenyl-1,3,4,6-tetrahydro- 5H-benz[fJ-2,5-oxazocine (89 mg, 0.23 mmol), Zn (1 mg, 0.012 mmol), Zn(CN) 2 (16 mg, 0.138 mmol), Zn(OAc) 2 (2 mg, 0.011 mmol), 1,1'-bis(diphenylphosphino)ferrocene (18 mg, 0.05 mmol) and Pd 2 (dba) 3 (11 mg, 0.06 mmol) in DMF (2 ml) and H 2 O (20 ⁇ l) was degassed under vacuum for 15 minutes and then heated at 140°C overnight.
  • Example 29 9-Cyclopropyl-5-methyl-1-(3,4-methylenedioxy)phenyl-1,3,4,6-tetrahydro-5H- benz[f
  • Example 32 8-Cyclopropyl-5-methyl-1 -(3,4-methylenedioxy)phenyl-1 ,3,4,6-tetrahydro-5H- benz[fJ-2,5-oxazocine 8-Bromo-5-methyl-1-(3,4-methylenedioxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]- 2,5-oxazocine (90 mg, 0.24 mmol), cyclopropylboronic acid (26.8 mg, 0.312 mmol), K 3 PO 4 (178 mg, 0.84 mmol), Pd(OAc) 2 (3 mg, 0.012 mmol) and P(cyclohexane) 3 (7 mg, 0.024 mmol) were heated to 100°C in toluene (2 ml) and water (100 ⁇ l) for 3 hours.
  • Example 35 8-Cyclopropyl-5-methyl-1-(3-ethoxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f
  • Example 38 9-Cyclopropyl-5-methyl-1 -(3-ethoxy)phenyl-1 ,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine 9-Bromo-5-methyl-1-(3-ethoxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine (140 mg, 0.36 mmol), cyclopropylboronic acid (41 mg,0.45 mmol), K 3 PO.
  • Example 40 ⁇ -Cyano-S-methyl-l-tS-trifluoromethoxyJphenyl-I.Sj ⁇ -tetrahydro- ⁇ H-benztfl ⁇ .S- oxazocine 8-Bromo-5-methyl-1-(3-trifluoromethoxy)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine (116 mg, 0.28 mmol), Zn (1 mg, 0.02mmol), Zn(OAc) 2 (7 mg, 0.038 mmol), Zn(CN) 2 (20 mg, 0.17 mmol), Pd 2 (dba) 3 (40 mg, 0.04 mmol) and 1,1 '-bis- (diphenylphosphine)ferrocene (20 mg, 0.036 mmol) were heated to 140°C in DMF (3 ml) and H 2 O (30 ⁇ l) overnight.
  • Example 45 9-Cyano-5-methyl-1-(2-methyl)phenyl-1,3,4,6-tetrahydro- ⁇ H-benz[f]-2, ⁇ -oxazocine 9-Bromo-5-methyl-1-(2-methyl)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine (156 mg, 0.45 mmol), Zn dust (2 mg, 0.03 mmol), Zn(CN) 2 (32 mg, 0.27 mmol), Zn(OAc) 2 (10 mg, 0.054 mmol), 1,1'-bis(diphenyIphosphino)ferrocene (30 mg, 0.054 mmol) and Pd 2 (dba) 3 (55 mg, 0.06 mmol) were heated to 140°C in DMF (3 ml) and water (30 ⁇ l) under a nitrogen atmosphere over-night.
  • Example 46 9-Cyclopropyl-5-methyl-1-(2-methyl)phenyl-1,3,4,6-tetrahydro- ⁇ H-benz[f
  • Example 48 8-Cyano-5-methy 1-1 -(2-methyl)phenyl-1 ,3,4,6-tetrahydro-5H-benz[f]-2,5-oxazocine 8-Bro ⁇ ⁇ o-5-methyl-1-(2-methyl)phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5- oxazocine (207 mg, 0.60 mmol), Zn (2 mg,0.03 mmol), Zn(OAc) 2 (13 mg, 0.071 mmol), Zn(CN) 2 (42 mg, 0.36 mmol), 1,1'-bis(diphenylphosphino)ferrocene (40 mg, 0.072 mmol) and Pd 2 (dba) 3 (75 mg, 0.082 mmol) were heated to 140°C in DMF (5 ml) and H 2 O (50 ⁇ l) overnight.
  • Example 52 ⁇ -Cyano- ⁇ -methyl-l-fS-pyridy -I.SA ⁇ -tetrahydro- ⁇ H-benztfl ⁇ -oxazocine 8-Bromo-5-methyl-1-(3-pyridyl)-1,3,4,6-tetrahydro-5H-benz[f]-2,5-oxazocine (50 mg, 0.15 mmol), Zn (1 mg, 0.01 mmol), Zn(OAc) 2 (4 mg, 0.02 mmol), Zn(CN) 2 (13 mg,
  • Basal control activity is determined by incubating the same mixture for 20 min at 0°C in the presence of 10 ⁇ M protriptyline to block the uptake. Following incubation, the samples are filtered rapidly under vacuum through glass fiber filters (GF/B, Packard) and rinsed twice with ice-cold incubation buffer using a 96-sample cell harvester (Unifilter, Packard) to eliminate free [ 3 H]norepinephrine. The filters are dried and the retained radioactivity is measured in a scintillation counter (Topcount, Packard) using a scintillation cocktail (Microscint 0, Packard). The results are expressed as a percent inhibition of the control uptake of [ 3 H]norepinephrine.
  • the standard inhibitory reference compound is protriptyline, which is tested in each experiment at several concentrations to obtain an inhibition curve from which its IC50 value is calculated.
  • Assay for Inhibition of Serotonin Reuptake Activity Synaptosomes (100 ⁇ g) are incubated for 15 min at 37°C with 0.1 ⁇ Ci [ 3 H]serotonin in the absence (control) or presence of the test compound or the reference compound in a buffer containing 118 mM NaCI, 5 mM KCI, 2.5 mM MgSO 4 , 1.2 mM NaH 2 P0 , 25 mM NaHCO 3 , 11 mM glucose, 10 ⁇ M EGTA and 50 ⁇ M ascorbic acid (pH 7.4).
  • Basal control activity is determined by incubating the same mixture for 15 min at 4°C in the presence of 10 ⁇ M imipramine to block the uptake. Following incubation, the samples are filtered rapidly under vacuum through glass fiber filters (GF/B, Packard) and rinsed twice with ice-cold incubation buffer using a 96-sample cell harvester (Unifilter, Packard) to eliminate free [ 3 H]serotonin. The filters are dried and the retained radioactivity is measured in a scintillation counter (Topcount, Packard) using a scintillation cocktail (Microscint 0, Packard). The results are expressed as a percent inhibition of the control uptake of [ 3 H]serotonin.
  • the standard inhibitory reference compound is imipramine, which is tested in each experiment at several concentrations to obtain an inhibition curve from which its IC 5 o value is calculated.

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Abstract

L'invention concerne des composés présentant une utilité thérapeutique et de formule (1) dans laquelle : R1 représente H, C 1-C6 alkyle éventuellement substitué par F ou C3-C6 cycloalkyle ou C2-C4 alcényle; A désigne O, CH2 ou S(O)n, n prenant une valeur comprise entre 0 et 2; un élément parmi W, X, Y et Z représente N, CH ou CR3 et les autres désignent CH; R2 représente C5-C6 hétéroaryle, C5-C10 cycloalkyle ou cycloalcényle renfermant éventuellement un ou plusieurs hétéroatomes sélectionnés parmi O, N et S(O)n, n prenant une valeur comprise entre 0 et 2, et éventuellement substitué par R3; ou un groupe phényle éventuellement substitué au niveau d'une ou de plusieurs positions par un ou plusieurs substituants sélectionnés de manière indépendante parmi halogène, CN, CF3, C1-C6 alkyle et OR1, ou le groupe phényle est fusionné à un noyau à 5 ou 6 chaînons pouvant être carbocyclique, hétérocyclique (renfermant entre 1 et 2 hétéroatomes sélectionnés parmi O, N et S), aromatique ou hétéroaromatique (renfermant entre 1 et 2 hétéroatomes sélectionnés parmi O et N); R3 est sélectionné parmi halogène; CF3 ; CN; OR5; SO2N(R5)2; COR5; CO2R5; CON(R5)2; NR1COR4; NR1SO2R4; NR1CO2R4; NR1CON(R5)2; OC1-C6 alkyle substitué par R3; C1-C6 alkyle éventuellement substitué par R3 non substitué; C3-C6 cycloalkyle éventuellement substitué par R3 non substitué; C2-C6 alcényle éventuellement substitué par R3 non substitué; C2-C6 alkynyle éventuellement substitué par R3 non substitué; aryle éventuellement substitué par R3 non substitué; et des hétérocycles aromatiques à 5 ou 6 chaînons renfermant entre 1 et 4 hétéroatomes sélectionnés parmi N et O; R4 désigne C1-C6 alkyle, C2-C6 alcényle, C2-C6 alkynyle, C3-C6 cycloalkyle, aryle et hétéroaryle; et R5 représente H, C1-C6 alkyle; C2-C6 alcényle, C2-C6 alkynyle, C3-C6 cycloalkyle, aryle ou hétéroaryle et est identique à un autre R5 ou différent de celui-ci; ou un sel acceptable sur le plan pharmaceutique de ceux-ci.
EP05736028A 2004-04-21 2005-04-21 Benzoxazocines et utilisation therapeutique de celles-ci comme inhibiteurs du recaptage de la monoamine Withdrawn EP1740558A1 (fr)

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GB0408863A GB0408863D0 (en) 2004-04-21 2004-04-21 Novel benzoxazocines
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PCT/GB2005/001519 WO2005103019A1 (fr) 2004-04-21 2005-04-21 Benzoxazocines et utilisation therapeutique de celles-ci comme inhibiteurs du recaptage de la monoamine

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GB0504960D0 (en) * 2005-03-10 2005-04-20 Arakis Ltd Benzoxazocines
GB0506835D0 (en) * 2005-04-04 2005-05-11 Arakis Ltd Therapeutic use of nefopam
JP5792185B2 (ja) 2009-12-15 2015-10-07 ザ・ホスピタル・フォー・シック・チルドレンＴｈｅ Ｈｏｓｐｉｔａｌｆｏｒ Ｓｉｃｋ Ｃｈｉｌｄｒｅｎ 線維増殖性障害および癌からなる群から選択されるβ−カテニン媒介障害を治療するための医薬組成物
EP2593447B1 (fr) 2010-07-15 2016-08-17 Bayer Intellectual Property GmbH Composés de 3-pyridyl-heteroarylcarboxamide comme d'agents de lutte contre les nuisibles

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US3830803A (en) * 1965-05-10 1974-08-20 Riker Laboratories Inc 5-loweralkyl-1-phenyl-1,3,4,6-tetrahydro-5h-benz(f)-2,5-oxazocines and 4-ones
US3978085A (en) * 1975-03-07 1976-08-31 Riker Laboratories, Inc. Process for benz[f]-2,5-oxazocines
JPS5913760A (ja) * 1982-07-13 1984-01-24 Sanwa Kagaku Kenkyusho:Kk 新規の２−ベンズアゾシン誘導体及びその製法
JPS5913770A (ja) * 1982-07-13 1984-01-24 Sanwa Kagaku Kenkyusho:Kk 新規の１−フエニル−２，５−ベンゾチアゾシン誘導体及びその製法
BR0015320A (pt) * 1999-11-03 2002-07-09 Albany Molecular Res Inc Composto, composição, métodos de tratamento de um distúrbio que e criado pela, ou é dependente da, disponibilidade diminuìda de serotonina, norepinefrina ou dopamina, para inibir a captação da serotonina, da dopamina e de norepinefrina sinápticas em um paciente em necessidade destes, e, kit
ATE404543T1 (de) * 2002-12-20 2008-08-15 Sosei R & D Ltd Benzoxazocine und ihre verwendung als monoamin- wiederaufnahme inhibitoren

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