WO2004031155A1 - ENANTIOSELECTIVE PROCESS FOR THE PREPARATION OF BOTH ENANTIOMERS OF 10,11-DIHYDRO-10-HYDROXY-5H-DIBENZ [b,f]AZEPINE-5-CARBOXAMIDE AND NEW CRYSTAL FORMS THEREOF - Google Patents
ENANTIOSELECTIVE PROCESS FOR THE PREPARATION OF BOTH ENANTIOMERS OF 10,11-DIHYDRO-10-HYDROXY-5H-DIBENZ [b,f]AZEPINE-5-CARBOXAMIDE AND NEW CRYSTAL FORMS THEREOF Download PDFInfo
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- WO2004031155A1 WO2004031155A1 PCT/EP2003/011034 EP0311034W WO2004031155A1 WO 2004031155 A1 WO2004031155 A1 WO 2004031155A1 EP 0311034 W EP0311034 W EP 0311034W WO 2004031155 A1 WO2004031155 A1 WO 2004031155A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carboxamide
- azepine
- dihydro
- hydroxy
- dibenz
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 38
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- 238000002360 preparation method Methods 0.000 title claims description 17
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- 230000001575 pathological effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229940002612 prodrug Drugs 0.000 description 1
- 239000000651 prodrug Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000003226 pyrazolyl group Chemical group 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000007909 solid dosage form Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- WHRNULOCNSKMGB-UHFFFAOYSA-N tetrahydrofuran thf Chemical compound C1CCOC1.C1CCOC1 WHRNULOCNSKMGB-UHFFFAOYSA-N 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D223/00—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
- C07D223/14—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D223/18—Dibenzazepines; Hydrogenated dibenzazepines
- C07D223/22—Dibenz [b, f] azepines; Hydrogenated dibenz [b, f] azepines
- C07D223/24—Dibenz [b, f] azepines; Hydrogenated dibenz [b, f] azepines with hydrocarbon radicals, substituted by nitrogen atoms, attached to the ring nitrogen atom
-
- 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
- A61P25/02—Drugs for disorders of the nervous system for peripheral neuropathies
-
- 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
- A61P25/08—Antiepileptics; Anticonvulsants
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0046—Ruthenium compounds
- C07F15/0053—Ruthenium compounds without a metal-carbon linkage
Definitions
- the invention relates to a novel process for the manufacture of substituted enantiopure 10- hydroxy-dihydrodibenz[b,f]azepines by transfer hydrogenation of 10-oxo-dihydro- dibenz[b,f]azepines, to novel catalysts and new crystal forms of both enantiomers of 10,11- dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide, obtainable by the new process.
- Substituted dihydrodibenz[b,f]azepines are understood to be those active agents which may be preferably used to prevent and treat some central and peripheric nervous system disorders. These compounds are well known and some of them have been used widely for the treatment of some pathological states in humans. For example, 5H-dibenz[b,f]azepine-5- carboxamide (carbamazepine) has become established as an effective agent in the management of epilepsy. An analogue of carbamazepine, 10,11 -dihydro-10-oxo-5H- dibenzo[b,f]azepine-5-carbamide (oxcarbazepine, see e.g.
- German Patent 2.011.087) exhibits comparable antiepileptical activity with less side effects than carbamazepine.
- Oxcarbazepine is metabolized in mammals to 10,11 -dihydro-10-hydroxy-5H- dibenz[b,f]azepine-5-carboxamide (see e.g. Belgian Patent 747.086).
- the objective of the present invention is to provide an enantioselective synthesis of substituted 10-hydroxy-dihydrodibenzo[b,f]azepines resulting in high yields and moreover guaranteeing a minimization of the ecological pollution of the environment, being economically attractive, e.g. by using less steps in the reaction and/or process sequence for the manufacture of 10,11 -dihydro-10-hydroxy-5H-dibenzo[b,f]azepine-5-carboxamide, and leading to largely enantiomerically pure target products and to products that are possible to crystallize.
- another objective of the present invention is to provide a process that can be carried out in a larger scale and can thus be used as production process.
- the present invention provides a process for the production of a compound of formula la or lb
- each of R 1 and R 2 are hydrogen, halogen, amino or nitro; and each of R 3 and R 4 , independently, are hydrogen or C Cealkyl; which process comprises the step of reducing a compound of formula II
- R 1 , R 2 , R 3 and R 4 are as defined above; in the presence of a hydrogen donor and a reducing agent selected from the group consisting of a compound of formula (Ilia), (1Mb), (IVa), (IVb), (Va), (Vb), (Via) or (Vlb)
- M is Ru, Rh, Ir, Fe, Co or Ni
- L-i is hydrogen
- L. 2 represents an aryl or aryl-aliphatic residue
- Hal is halogen
- R 5 is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aryl or aryl-aliphatic residue, which, in each case, may be linked to a polymer; each of R 6 and R 7 , independently, is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aryl or aryl-aliphatic residue; each of R 8 and R 9 is phenyl or R 8 and R 9 form together with the carbon atom to which they are attached a cyclohexane or cyclopentane ring; and
- R 17 is H, halogen, amino, nitro or C r C 6 alkoxy.
- Any aromatic residue of a compound of formula (Ilia), (1Mb), (IVa), (IVb), (Va), (Vb), (Via) or (Vlb) is substituted or, preferably, unsubstituted. If it is substituted, it may be substituted, for example, by one or more, e.g. two or three, residues e.g. those selected from the group consisting of C ⁇ -C 7 alkyl, hydroxy, -O-CH 2 -O-, CHO, C 1 -C 7 alkoxy, C 2 -C 8 alkanoyl-oxy, halogen, e.g. Cl or F, nitro, cyano, and CF 3 .
- residues e.g. those selected from the group consisting of C ⁇ -C 7 alkyl, hydroxy, -O-CH 2 -O-, CHO, C 1 -C 7 alkoxy, C 2 -C 8 alkanoyl-oxy, halogen, e
- An aliphatic hydrocarbon residue is, for example, C-*-C 7 alkyl, C 2 -C 7 alkenyl or secondarily C 2 - C 7 alkynyl.
- C 2 -C Alkenyl is in particular C 3 -C 7 alkenyl and is, for example, 2-propenyl or 1-, 2- or 3-butenyl.
- C 3 -C 5 alkenyl is preferred.
- C 2 -C 7 -Alkynyl is in particular C 3 -C 7 alkynyl and is preferably propargyl.
- a cycloaliphatic residue is, for example, a C 3 -C 8 cycloalkyl or, secondarily, C 3 -C 8 cycloalkenyl.
- C 3 -C 8 Cycloalkyl is, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl. Cyclopentyl and cyclohexyl are preferred.
- Cycloalkenyl is in particular C 3 -C 7 cycloalkenyl and is preferably cyclopent-2-en-yl and cyclopent-3- enyl, or cyclohex-2-en-yl and cyclohex-3-en-yl.
- a cycloaliphatic-aliphatic residue is, for example, C 3 -C 8 cycloalkyl-CrC 7 alkyl, preferably C 3 - C 6 -cycloalkyl-C ⁇ -C 4 alkyl. Preferred is cyclopropylmethyl.
- An aryl residue is, for example, a carbocyclic or heterocyclic aromatic residue, in particular phenyl or in particular an appropriate 5- or 6-membered and mono or multicyclic residue which has up to four identical or different hetero atoms, such as nitrogen, oxygen or sulfur atoms, preferably one, two, three or four nitrogen atoms, an oxygen atom or a sulfur atom.
- Appropriate 5-membered heteroaryl residues are, for example, monoaza-, diaza-, triaza-, tetraaza-, monooxa- or monothia-cyclic aryl radicals, such as pyrrolyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, furyl and thienyl, while suitable appropriate 6-membered residues are in particular pyridyl.
- Appropriate multicyclic residues are anthracenyl, phenanthryl, benzo[1 ,3]- dioxole or pyrenyl.
- An aryl residue may be mono-substituted by e.g. NH 2 , OH, SO 3 H, CHO, or di-substituted by OH or CHO and SO 3 H.
- An aryl-aliphatic residue is in particular phenyl-C**-C 7 alkyl, also phenyl-C 2 -C 7 alkenyl or phenyl-C 2 -C 7 alkynyl.
- Halogen represents fluorine, chlorine, bromine or iodine.
- Polymers may be polystyrene (PS), cross-linked PS (J), polyethylene glycol (PEG) or a silica gel residue (Si). Examples are NH-R 15 wherein R 15 is C(O)(CH 2 ) ⁇ -PS or C(O)NH(CH 2 ) n -PS; and -O-Si(R 18 ) 2 (CH 2 )nR 16 wherein n is 1 to 7, R 18 is C r C 6 alkyl, e.g. ethyl, and R 16 is a PS, J, PEG or Si (obtainable by Aldrich, Switzerland).
- M is Ru, Rh, Ir, preferably Ru.
- L 2 is isopropylmethylbenzene, benzene, hexamethylbenzene, mesitylene, preferred is isopropylmethylbenzene.
- R 5 is 2- or 3- or 4-pyridyl, 4-chloro-4-phenoxy-phenyl, 4-phenoxy-phenyl, 5-di(m)ethylamino-
- R 6 and R 7 are phenyl, 4-methylphenyl or 3,5-dimethylphenyl, preferred is phenyl.
- R 8 and R 9 is phenyl or cyclohexyl or substituted phenyl, preferably is phenyl.
- Preferred R 17 is H.
- a preferred hydrogen donor is, for example, a system comprising 2-propanol, 3-pentanol, or most preferably HOOCH in the presence of an amine, such as triethylamine, DBU or other tertiary amines.
- the hydrogen donor may also be used as inert solvent, especially 2- propanol and most preferably HCOOH.
- An alternative hydrogen donor is 2-propanol in the presence of various catalysts and base, e.g.
- the preferred bases are: f-BuOK, KOH or APrOK.
- the invention provides a process for the production of a compound of formula I'a or I'b
- a reducing agent selected from the group consisting of a compound of formula (Ilia), (1Mb), (IVa), (IVb), (Va), (Vb), (Via) or (Vlb) as described above and a hydrogen donor.
- the invention further provides the novel compounds of formula II Pa and lll'b
- n O, 1, 2, 3, 4, 5, 6 or 7;
- X is O or S
- R 10 is polystyrol
- R 11 is silica gel
- R 12 is cross-linked polystyrol
- R 13 is polyethylene-glycol
- R 14 is C C 6 alkyl; and m is 1 , 2 or 3.
- the hydrogenation described above may be carried out, for example in the absence or, customarily, in the presence of a suitable solvent or diluent or a mixture thereof, the reaction, as required, being carried out with cooling, at room temperature or with warming, for example in a temperature range from about - 80°C up to the boiling point of the reaction medium, preferably from about -10° to about +200°C, and, if necessary, in a closed vessel, under pressure, in an inert gas atmosphere and/or under anhydrous conditions.
- the hydrogenation may be carried out in a suitable inert solvent, such as an ether, e.g. tetrahydrofuran, an ester, such as ethylacetate, a halogenated solvent, such as methylen- chloride, supercritical CO 2 , ionic liquids, a nitrile, especially acetonitrile, an amide, such as dimethylformamide or dimethylacetamide and in a temperature range from, for example, from -78°C, to the boiling point of the solvent, preferably at room temperature, e.g. as described in the Examples.
- a suitable inert solvent such as an ether, e.g. tetrahydrofuran, an ester, such as ethylacetate, a halogenated solvent, such as methylen- chloride, supercritical CO 2 , ionic liquids, a nitrile, especially acetonitrile, an amide, such as dimethylformamide or dimethylacetamide
- the compounds of formula (I) may be converted into their corresponding pro-drug esters of formula (VIII)
- Y is unbranched or branched C r C ⁇ 8 alkylcarbonyl, aminoC ⁇ -C 18 alkylcarbonyl, C 3 - Cscycloalkylcarbonyl, C 3 -C 8 cycloalkylC ⁇ -C ⁇ 8 alkylcarbonyl, halogenC r C 18 alkylcarbonyl, unsubstituted or at the aryl substituted C 5 -Ci 0 arylCi-C 18 alkylcarbonyl, unsubstituted or at the heteroaryl substituted C 5 -C ⁇ 0 heteroarylC ⁇ -C ⁇ 8 alkylcarbonyl, C C 18 alkoxycarbonyl; and and R 1 , R 2 , R 3 and R 4 are as described above (see also EP-B1-751129 for production conditions).
- a further objective of the present invention is to provide new crystal forms of both enantiomers of 10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide, obtainable by the new process described above, their usage in the production of pharmaceutical preparations, new pharmaceutical preparations comprising these new crystal forms and/or the use of these new crystal forms in the treatment of disorders such as epilepsy, or in the production of pharmaceutical formulations which are suitable for this treatment.
- the present invention also furnishes new crystal forms of both enantiomers of 10,11- dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide, especially to crystal forms described hereinafter as modification A and modification B.
- Modification A can be distinguished from modification B, for instance, by X-ray powder diffraction techniques, IR spectroscopy and melting points.
- the crystal forms can be distinguished in particular by their X-ray powder diffraction pattern.
- X- ray powder diffraction pattern were taken with a diffractometer and using Cu-Ko ⁇ -radiation are preferably used to characterise solids of organic compounds.
- X- ray powder diffraction pattern are used particularly successfully to determine the crystal modification of a substance.
- Table 1 Crystal modification A of (R)- or (S)-10.11-dihvdro-10-hvdroxy-5H- dibenzrb,flazepine-5-carboxamide
- the present invention provides
- crystal modification B of (S)-10,11 -dihydro-10-hydroxy-5H- dibenz[b,f]azepine-5-carboxamide has a melting point between 193.0 and 197.0 °C, especially a melting point between 194.0 and 196.0 °C, e.g. 195.5 °C.
- the present invention also relates to a crystal modification of (S)-10,11 -dihydro-10-hydroxy-5H- dibenz[b,f]azepine-5-carboxamide having a melting point between 193.0 and 197.0 °C especially a melting point between 194.0 and 196.0 °C, e.g. 195.5 °C.
- the invention also relates to a new anhydrous crystal form of (R)- or (S)-10,11 -dihydro-10- hydroxy-5H-dibenz[b,f]azepine-5-carboxamide, which is characterised by a melting enthalpy of between 122 J/g and 136 J/g, preferably between 126 and 131 J/g, more preferably between 128 and 129 J/g.
- Crystal modification A of (R)- or (S)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5- carboxamide can be obtained by quickly precipitating (R)- or (S)-10,11 -dihydro-10-hydroxy- 5H-dibenz[b,f]azepine-5-carboxamide, respectively, from its solution in a suitable solvent, e.g. dichloromethane, acetone or an alcohol such as ethanol or isopropanol, e.g.
- a suitable solvent e.g. dichloromethane, acetone or an alcohol such as ethanol or isopropanol, e.g.
- Crystal modification B of (R)- or (S)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5- carboxamide can be obtained from the corresponding crystal modification A or from amorphous material by phase equilibration in a suitable solvent, e.g. by vibration for 12 to 200 hours, e.g. 24 hours, in acetone or ethanol at room temperature.
- a suitable solvent e.g. by vibration for 12 to 200 hours, e.g. 24 hours, in acetone or ethanol at room temperature.
- the time necessary to obtain pure form B depends on the enantiomer and the particular solvent used.
- (S)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide having crystal modification A can be transferred into (S)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine- 5-carboxamide having crystal modification B in acetone at room temperature in less than 24 hours.
- crystal modification B of (R)- or (S)-10,11 -dihydro-10-hydroxy-5H- dibenz[b,f]azepine-5-carboxamide can be obtained by crystallization of (R)- or (S)-10,11- dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide from its solution in a suitable solvent, e.g. an alcohol such as ethanol or isopropanol, especially by adding a crystal of (R)- or (S)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide, respectively, having crystal modification B.
- a suitable solvent e.g. an alcohol such as ethanol or isopropanol
- the distinct crystal modifications A and B of the (R)- and (S)-enantiomer, respectively, can be obtained in pure form, i.e. the pure entaniomers are obtained in a crystal form which contains less than 10 % of the other crystal form, preferably less than 5 % of the other crystal form, more preferably less than 1 % of the other crystal form.
- the new crystal forms are especially stable, in particular crystal form B is to be regarded as the one which is the thermodynamically stable crystalline form, and they are therefore suitable as active ingredients for solid forms of administration, for storing in solid form or as intermediates (with particularly good storability) in the preparation of solid or liquid forms of administration. Upon storage of modification B, no crystals of modification A should be obtained. Such stable forms are preferred for the preparation of medicaments.
- modification A is better soluble in organic and aqueous solutions than modification B and, hence, is more suitable for the preparation of infusions. Furthermore, modification A can be incorporated in solid dosage forms such as tablets in order to have an improved, in particular a faster, bioavailability than modification B.
- the invention also relates to the use of the new crystal forms in the production of pharmaceutical preparations, new pharmaceutical preparations which contain these new crystal forms, and/or their use in the treatment of epilepsy.
- pharmaceutical preparations or compositions which comprise or contain the active ingredient are mentioned, in the case of liquid compositions or compositions which no longer contain the crystal form as such, this is always understood to mean also the pharmaceutical preparations obtainable using the crystal forms (for example infusion solutions obtained using crystal forms A or B as defined herein), even if they no longer contain the respective crystal form (for example because they exist in solution).
- the invention also relates especially to the use of a new crystal form of (R)- or (S)-10,11- dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide having crystal form A or, preferably, B, in the production of pharmaceutical preparations, characterised by mixing a new crystal form of (R)- or (S)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5- carboxamide having crystal form A or B with one or more carriers.
- the invention also relates to a method of treating warm-blooded animals suffering from a disorder such as epilepsy, characterised by administering a dose of (R)- or (S)-10,11- dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide which is effective for treating said disease in one of the new crystal forms to a warm-blooded animal requiring such treatment, also including in particular the treatment with those preparations that are produced using one of the new crystal forms; and/or the use of a new crystal form of (R)- or (S)-10,11-dihydro- 10-hydroxy-5H-dibenz[b,f]azepine-5-carboxamide having crystal form A or B in such a treatment.
- a disorder such as epilepsy
- the active ingredient may be used for example in such a way that the pharmaceutical preparations contain an effective amount of the active ingredient together or in a mixture with a significant amount of one or more organic or inorganic, liquid or solid, pharmaceutically acceptable carriers.
- compositions according to the invention are those intended for enteral, especially nasal, rectal or oral, or parenteral administration to warm-blooded animals, especially humans, and they contain an effective dose of the active ingredient on its own or together with a significant amount of a pharmaceutically acceptable carrier.
- the dose of the active ingredient is dependent on the type of warm-blooded animal, the body weight, the age and the individual condition, individual pharmacokinetic situations, the disease to be treated and the type of administration.
- DSC investigations are made on a Perkin Elmer DSC 7 instrument or on Perkin Elmer Pyris DSC. About 2-4 mg of drug substance are place into a gold sample pan which is sealed under nitrogen to prevent oxidation during the heating phase. A heating rate of 10°C/min is applied from 25°C to 210°C.
- PXRD is performed on a Philips 1710 powder X-ray diffractometer using Cu K ⁇ radiation.
- the X-ray tube is operated at a Voltage of 40kV, and a current of 40 mA.
- a step size of 0.02°, and a counting time of 2.4 s per step is applied.
- IR is performed on a Perkin-Elmer BX II FT-IR spectrometer. About 1 mg of drug substance are pressed into a KBr pellet. 12 scans at a resolution of 2 cm '1 are acquired. For characterization of the polymorphs ATR-IR is performed using a Greasby Specac Golden Gate Diamond ATR Accessory, Serial No. 2585. About 10 mg of test substance are pressed in the ATR cell using 70cNm.
- Example 1 Procedure for the enantioselective Transfer Hydrogenation of 10-Oxo-10.11- dihvdro-dibenzof/ /lazepine-5-carboxylic acid amide to f?(-)-10.11-Dihvdro-10-hvdroxy-5H- dibenzf/ ⁇ tlazepine-5-carboxamide
- Example 2 Procedure for the enantioselective Transfer Hydrogenation of 10-Oxo-10.11- dihvdro-dibenzori /lazepine-5-carboxylic acid amide to S(+)-10.11-Dihvdro-10-hvdroxy-5H- dibenzf. /lazepine-5-carboxamide
- reaction mixture is cooled to RT, diluted with CH 2 CI 2 (20 ml) and neutralised with aqu. NaHCO 3 . After washing with brine the solution is concentrated under reduced pressure. The residue is purified by flash chromatography on silica gel using a 6:1 EtOAc-MeOH mixture as eluent to afford of S(+)-10,11-Dihydro-10-hydroxy-5H-dibenzo[jb, ]azepine-5-carboxamide.
- Example 4 Crystal modification B of (R)-10.11-Dihvdro-10-hvdroxy-5H-dibenzfb.f1azepine-5- carboxamide 120 mg of crystal modification A of (R)-10,11 -dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5- carboxamide are suspended in 1.0 ml of acetone and the obtained suspension is stirred with a magnetic stirrer shaken for 160 hours at 21 to 25 °C. The product is filtered and dried in air at room temperature providing crystal modification B of (R)-10,11 -dihydro-10-hydroxy-5H- dibenz[b,f]azepine-5-carboxamide in the form of white crystals.
- Example 5 Crystal modification B of (S)-10.11-Dihvdro-10-hvdroxy-5H-dibenzrb.f1azepine-5- carboxamide
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Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0315113-1A BR0315113A (en) | 2002-10-07 | 2003-10-06 | Enantioselective process for the preparation of both 10,11-dihydro-10-hydroxy-5h-dibenz [b, f] azepine-5-carboxamide enantiomers and their crystal forms |
CA002501237A CA2501237A1 (en) | 2002-10-07 | 2003-10-06 | Enantioselective process for the preparation of both enantiomers of 10,11-dihydro-10-hydroxy-5h-dibenz [b,f]azepine-5-carboxamide and new crystal forms thereof |
JP2004540788A JP2006504710A (en) | 2002-10-07 | 2003-10-06 | Process for the enantioselective preparation of both enantiomers of 10,11-dihydro-10-hydroxy-5H-dibenz [b, f] azepine-5-carboxamide and its novel crystalline form |
AU2003276055A AU2003276055B2 (en) | 2002-10-07 | 2003-10-06 | Enantioselective process for the preparation of both enantiomers of 10,11-dihydro-10-hydroxy-5H-dibenz [b,f]azepine-5-carboxamide and new crystal forms thereof |
US10/530,617 US20060142566A1 (en) | 2002-10-07 | 2003-10-06 | Enantioselective process for the preparation of both enantiomers of 10,11-dihydro-10-hydroxy-5h-dibenz[b,f]azepine-5-carboxamide and new crystal forms thereof |
MXPA05003737A MXPA05003737A (en) | 2002-10-07 | 2003-10-06 | ENANTIOSELECTIVE PROCESS FOR THE PREPARATION OF BOTH ENANTIOMERS OF 10,11-DIHYDRO-10-HYDROXY-5H-DIBENZ [b,f]AZEPINE-5-CARBOXAMIDE AND NEW CRYSTAL FORMS THEREOF. |
EP03798930A EP1551808A1 (en) | 2002-10-07 | 2003-10-06 | ENANTIOSELECTIVE PROCESS FOR THE PREPARATION OF BOTH ENANTIOMERS OF 10,11-DIHYDRO-10-HYDROXY-5H-DIBENZ b,f AZEPINE-5-CARBOXAMIDE AND NEW CRYSTAL FORMS THEREOF |
NO20052244A NO20052244L (en) | 2002-10-07 | 2005-05-06 | Enantioselective process for preparing both enantiomers of 10,11-dihydro-10-hydroxy-5H-dibenzo [b, f] -azepine-5-carboxamide and novel crystal forms thereof |
HK05112208.8A HK1079790A1 (en) | 2002-10-07 | 2005-12-30 | Enantioselective process for the preparation of both enantiomers of 10, 11-dihydro-10-hydroxy-5h-dibenz b,f azepine-5-carboxamide and new crystal forms thereof |
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GB0223224.7 | 2002-10-07 | ||
GBGB0223224.7A GB0223224D0 (en) | 2002-10-07 | 2002-10-07 | Organic compounds |
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WO2004031155A1 true WO2004031155A1 (en) | 2004-04-15 |
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US (1) | US20060142566A1 (en) |
EP (1) | EP1551808A1 (en) |
JP (1) | JP2006504710A (en) |
KR (1) | KR20050071549A (en) |
CN (2) | CN101062932A (en) |
AR (1) | AR041544A1 (en) |
AU (1) | AU2003276055B2 (en) |
BR (1) | BR0315113A (en) |
CA (1) | CA2501237A1 (en) |
EC (1) | ECSP055738A (en) |
GB (1) | GB0223224D0 (en) |
HK (1) | HK1079790A1 (en) |
MX (1) | MXPA05003737A (en) |
NO (1) | NO20052244L (en) |
PE (1) | PE20040686A1 (en) |
PL (1) | PL376379A1 (en) |
RU (1) | RU2005114350A (en) |
TW (1) | TW200413324A (en) |
WO (1) | WO2004031155A1 (en) |
ZA (1) | ZA200502561B (en) |
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US20060142566A1 (en) | 2006-06-29 |
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