EP3256477A1 - Solid forms of dolutegravir salts and a method of their preparation - Google Patents
Solid forms of dolutegravir salts and a method of their preparationInfo
- Publication number
- EP3256477A1 EP3256477A1 EP16712715.8A EP16712715A EP3256477A1 EP 3256477 A1 EP3256477 A1 EP 3256477A1 EP 16712715 A EP16712715 A EP 16712715A EP 3256477 A1 EP3256477 A1 EP 3256477A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dolutegravir
- salt
- amine
- potassium
- magnesium
- 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- Withdrawn
Links
- RHWKPHLQXYSBKR-BMIGLBTASA-N dolutegravir Chemical class C([C@@H]1OCC[C@H](N1C(=O)C1=C(O)C2=O)C)N1C=C2C(=O)NCC1=CC=C(F)C=C1F RHWKPHLQXYSBKR-BMIGLBTASA-N 0.000 title claims abstract description 189
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007787 solid Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 26
- 229960002542 dolutegravir Drugs 0.000 claims abstract description 177
- 150000003839 salts Chemical class 0.000 claims abstract description 111
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 62
- 150000001412 amines Chemical class 0.000 claims abstract description 51
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229960000281 trometamol Drugs 0.000 claims abstract description 23
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 18
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011777 magnesium Substances 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 18
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 15
- 239000011591 potassium Substances 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011575 calcium Substances 0.000 claims abstract description 14
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 14
- MBBZMMPHUWSWHV-BDVNFPICSA-N N-methylglucamine Chemical compound CNC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO MBBZMMPHUWSWHV-BDVNFPICSA-N 0.000 claims abstract description 6
- JUHORIMYRDESRB-UHFFFAOYSA-N benzathine Chemical compound C=1C=CC=CC=1CNCCNCC1=CC=CC=C1 JUHORIMYRDESRB-UHFFFAOYSA-N 0.000 claims abstract description 6
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229960003194 meglumine Drugs 0.000 claims abstract description 6
- 229940043237 diethanolamine Drugs 0.000 claims abstract description 5
- 229940031098 ethanolamine Drugs 0.000 claims abstract description 5
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 50
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 42
- 239000002904 solvent Substances 0.000 claims description 26
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims description 18
- 239000004472 Lysine Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 159000000003 magnesium salts Chemical class 0.000 claims description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 159000000007 calcium salts Chemical class 0.000 claims description 12
- 239000008194 pharmaceutical composition Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 11
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 8
- 229910016523 CuKa Inorganic materials 0.000 claims description 7
- 241000725303 Human immunodeficiency virus Species 0.000 claims description 7
- 150000001768 cations Chemical class 0.000 claims description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims description 7
- 238000005550 wet granulation Methods 0.000 claims description 7
- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 238000004128 high performance liquid chromatography Methods 0.000 claims description 6
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 6
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 125000002015 acyclic group Chemical group 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 150000002170 ethers Chemical class 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 150000002825 nitriles Chemical class 0.000 claims description 2
- 239000012453 solvate Substances 0.000 claims 8
- 230000001747 exhibiting effect Effects 0.000 claims 7
- 206010038997 Retroviral infections Diseases 0.000 claims 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims 2
- 238000004108 freeze drying Methods 0.000 claims 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 2
- 238000011065 in-situ storage Methods 0.000 claims 2
- 238000001694 spray drying Methods 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000009477 glass transition Effects 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 4
- 238000011105 stabilization Methods 0.000 abstract description 4
- 239000002552 dosage form Substances 0.000 abstract description 3
- 238000000634 powder X-ray diffraction Methods 0.000 description 18
- 238000000113 differential scanning calorimetry Methods 0.000 description 13
- ACTNHJDHMQSOGL-UHFFFAOYSA-N n',n'-dibenzylethane-1,2-diamine Chemical compound C=1C=CC=CC=1CN(CCN)CC1=CC=CC=C1 ACTNHJDHMQSOGL-UHFFFAOYSA-N 0.000 description 10
- 238000005481 NMR spectroscopy Methods 0.000 description 9
- 238000002411 thermogravimetry Methods 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 7
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- -1 diethylamine Chemical class 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 4
- 229930195725 Mannitol Natural products 0.000 description 4
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 4
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- MVPICKVDHDWCJQ-UHFFFAOYSA-N ethyl 3-pyrrolidin-1-ylpropanoate Chemical compound CCOC(=O)CCN1CCCC1 MVPICKVDHDWCJQ-UHFFFAOYSA-N 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000000594 mannitol Substances 0.000 description 4
- 229960001855 mannitol Drugs 0.000 description 4
- 235000010355 mannitol Nutrition 0.000 description 4
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 4
- 239000008108 microcrystalline cellulose Substances 0.000 description 4
- 229940016286 microcrystalline cellulose Drugs 0.000 description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 4
- 229940069328 povidone Drugs 0.000 description 4
- 229940045902 sodium stearyl fumarate Drugs 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- 102000053602 DNA Human genes 0.000 description 2
- 108020004414 DNA Proteins 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229940126601 medicinal product Drugs 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229950004864 olamine Drugs 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001177 retroviral effect Effects 0.000 description 2
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 108010002459 HIV Integrase Proteins 0.000 description 1
- 102100034343 Integrase Human genes 0.000 description 1
- 108010061833 Integrases Proteins 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005384 cross polarization magic-angle spinning Methods 0.000 description 1
- 239000011903 deuterated solvents Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000001664 diethylamino group Chemical class [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 238000002483 medication Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000019371 penicillin G benzathine Nutrition 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000000371 solid-state nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229940014075 tivicay Drugs 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004704 ultra performance liquid chromatography Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/18—Antivirals for RNA viruses for HIV
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D498/04—Ortho-condensed systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
- F02C3/10—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor with another turbine driving an output shaft but not driving the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
Definitions
- the invention relates to new solid forms of salts of dolutegravir (I), (4-i J 12a5)-N-(2,4-difluorobenzyl)-7-hydroxy-4-methyl-6 5 8-dioxo-3,4,6 ! 8,12,12a-hexahydro- 2H-pyrido[r,2':4 5 5]pyrazino[2,l-i)][l,3]oxazine-9-carboxamide, a method of their preparation and their use in a dosage form.
- solid forms of dolutegravir with amines e.g.
- diethylamine, N,N r -dibenzylethylenediamine, meglumine, emanolamine, diethanolamine, tromethamine, ie ⁇ butylamine), potassium, magnesium and calcium are well usable. These salts can be conveniently used to increase purity of dolutegravir and its stabilization in terms of chemical as well as polymorphic purity.
- Dolutegravir very readily forms salts with amines, e.g. with diethylamine, N.iV'-dibenzylethylenediamine, meglumine, tromethamine, ethanolamine, diethanolamine, ieri-butylamine and amino acids.
- the amine binds to dolutegravir in the molar ratio of the amine to dolutegravir of 2:1 to 1:4, however ideally in the molar ratios of 1 :1 or 1:2.
- the potassium, magnesium and calcium salts of dolutegravir have been prepared, which can be further used for the development and production of a particular dosage form and a particular medicinal product.
- the solid-state nuclear magnetic resonance (ssNMR) spectrum of various salts of dolutegravir - with diethylamine (fig. 4), with N,N -dibenzylethylenediamine (fig. 7), with ethanolamine (fig. 10), with tromethamine (fig. 14) and with lysine (fig. 17) differs from the ssNMR spectra of dolutegravir (fig. 1).
- the following melting points were measured with the use of the differential scanning calorimetry (DSC), dolutegravir 189.5°C (fig. 3), dolutegravir salt with diethylamine 186.3°C (fig.
- the salt of dolutegravir with ethanolamine can also exist in a hydrated form; XRPD in fig. 13. This form was confirmed by the thermogravimetric analysis (TGA), according to which it contains 17% of water and 14% of ethanolamine.
- TGA thermogravimetric analysis
- the anhydrous form of dolutegravir with emanolarriine contains 1% of water and 16% of emanolamine.
- the salt of dolutegravir with diethylamine contains 1% of water and 14% of diethylamine.
- the salt of dolutegravir with N,N-dibenzylethylenediamine contains 2% of water.
- the salt of dolutegravir with tromethamine contains 1% of water and the salt with lysine contains 4% of water.
- Preparation of a salt of dolutegravir with an amine according to variant A comprises the following steps:
- the dissolution or dispersion according to the preparation variants A and B may be carried out in an organic solvent selected from CI to C8 hydrocarbons (aliphatic or aromatic), CI to C4 alcohols, CI to C8 esters, CI to C8 ketones, CI to C6 ethers (acyclic or cyclic), CI to C4 nitriles, water or their mixtures in the range from 20°C to the boiling point of the solvent or solvents. It is preferably carried out in methanol, ethanol, 1-propanol, 2-propanol, acetone, tetrahydrofuran or their mixtures.
- an organic solvent selected from CI to C8 hydrocarbons (aliphatic or aromatic), CI to C4 alcohols, CI to C8 esters, CI to C8 ketones, CI to C6 ethers (acyclic or cyclic), CI to C4 nitriles, water or their mixtures in the range from 20°C to the boiling point of the solvent or solvent
- step hi of the preparation variant B the amine can be added in a solid form or in the form of a solution; the salt with dolutegravir is formed equally readily in both the cases. Subsequently, the mixture is usually cooled down, preferably to the range of 20°C to 30°C and left to crystallize.
- the salt can be isolated either directly by filtration, or concentration of the mixture, or evaporation of the solvents may follow. Preparation of a salt of dolutegravir with an amine according to variant C is directly carried out during the formulation process, preferably directly during the wet granulation.
- the respective equivalent part of the amine - diethyiamine, N.N'-dibenzylethylenediamine, meglumine, tromethamine, ethanolamine, diethanolamine, tefi-butylamine or lysine are charged into a homogenizer.
- the salt is formed during wet granulation.
- Dolutegravir forms salts with amines in the molar ratios of the amine to dolutegravir in the range of 2: 1 to 1 :4, but ideally 1 : 1 to 1 :2.
- a salt of dolutegravir and an amine is generally produced in an 80% yield, preferably 90% yield, while the chemical purity, measured by HPLC, is not lower than that of the input dolutegravir. On the contrary, what often happens is that the chemical purity of the salt is considerably higher than the purity of the input dolutegravir.
- a salt of dolutegravir with an amine can be advantageously used for purification of crude dolutegravir.
- the salt of dolutegravir with diethyiamine exhibits a crystalline character.
- the X-ray powder pattern of this salt is shown in Fig. 5.
- the characteristic peaks are: 5.5; 11.2; 14.3; 16.8; 19.1 and 24.4 ⁇ 0.2 °2-theta.
- Diffraction peaks with a higher relative intensity than 15% are shown in Table 3.
- the salt of dolutegravir with N,N'-dibenzylethylenediamine exhibits a crystalline character.
- the X-ray powder pattern of this salt is shown in Fig. 8.
- the characteristic peaks are: 7.2; 11.2; 16.6; 18.0; 21.8 and 23.6 ⁇ 0.2 °2-theta.
- Diffraction peaks with a higher relative intensity than 15% are shown in Table 4.
- the salt of dolutegravir with ethanolamine exhibits a crystalline character and can exist in an anhydrous or hydrated form.
- the X-ray powder pattern of the anhydrous form of this salt is shown in fig. 11 and that of the hydrated form in fig. 13.
- the characteristic peaks of the anhydrous form of the salt of dolutegravir with ethanolamine are 7.2; 12.5; 18.3; 19.6 and 23.4 ⁇ 0.2 °2-theta; its diffraction peaks with a relative intensity higher than 15% are presented in Table 5.
- the salt of dolutegravir with tromethamine exhibits a crystalline character.
- the X-ray powder pattern of this salt is shown in Fig. 15.
- the characteristic peaks are: 7.9; 15.6; 20.7; 22.4; 2.8; 26.0 and 26.8 ⁇ 0.2 °2-theta.
- Diffraction peaks with a higher relative intensity than 15% are shown in Table 7.
- the potassium, magnesium and calcium salt can be prepared by mixing of dolutegravir with a reagent containing potassium (K + ), magnesium (Mg 2+ ) or calcium (Ca 2+ ) cations. This preparation may be done separately, e.g. during crystallization, or later in the formulation process, e.g. during wet granulation.
- dolutegravir together with a reagent containing potassium (K + ), magnesium (Mg 2+ ) or calcium (Ca 2+ ) cations are charged into a homogenizer besides the excipients.
- a dissolution and/or dispersion of dolutegravir in a solvent or a mixture of solvents b/ addition of a reagent containing potassium (K + ), magnesium (Mg 2+ ) or calcium (Ca 2+ ) cations, in a solid form or in the form of a solution;
- the dissolution or dispersion may be carried out in an organic solvent selected from CI to C8 hydrocarbons (aliphatic or aromatic), CI to C4 alcohols, CI to C8 esters, CI to C8 ketones, CI to C6 ethers (acyclic or cyclic), CI to C4 nitrites, water or their mixtures in the range from 20°C to the boiling point of the solvent or solvents. It is preferably carried out in methanol, ethanol, l-propanol, 2-propanol, acetone, water, or their mixtures.
- the reagent can be added in the solid form or in the form of a solution; the salt with dolutegravir is formed equally readily in both the cases.
- the mixture is usually cooled down, preferably to the range of -20°C to 30°C, and left to crystallize.
- the salt can be isolated either directly by filtration, or concentration of the mixture, or evaporation of the solvents may follow.
- Fig. 1 ssNMR record of dolutegravir
- Fig. 4 ssNMR record of the salt of dolutegravir salt with diethylamine
- Fig. 5 XRPD pattern of the salt of dolutegravir with diethylamine
- Fig. 7 ssNMR record of the salt of dolutegravir with N.N'-dibenzylethylenediamine
- Fig. 8 XRPD pattern of the salt of dolutegravir withN,N'-dibenzylethylenediamine
- Fig. 9 DSC record of the salt of dolutegravir with N,N-dibenzylethylenediamine
- Fig. 10 ssNMR record of the anhydrous salt of dolutegravir with ethanolamine
- Fig. 11 XRPD pattern of the anhydrous salt of dolutegravir with ethanolamine
- Fig. 12 DSC record of the anhydrous salt of dolutegravir with ethanolamine
- Fig. 13 XRPD pattern of the hydrated salt of dolutegravir with ethanolamine
- Fig. 14 ssNMR record of the salt of dolutegravir with tromethamine
- Fig. 15 XRPD pattern of the salt of dolutegravir with tromethamine
- Fig. 16 DSC record of the salt of dolutegravir with tromethamine
- Fig. 17 ssNMR record of the salt of dolutegravir with lysine
- Fig. 18 XRPD pattern of the salt of dolutegravir with lysine
- Fig. 19 DSC record of the salt of dolutegravir with lysine
- Fig. 20 XRPD pattern of the potassium salt of dolutegravir
- Fig. 21 XRPD pattern of the magnesium salt of dolutegravir
- Dolutegravir was prepared according to the procedure published in the patent application WO2006116764. The chemical purity of dolutegravir prepared this way was 98.2% (HPLC). The solid-state NMR spectrum (Fig. 1), XRPD pattern (Fig. 2) and DSC record (Fig.3) confirm the structure of dolutegravir.
- Dolutegravir 200 mg, 0.48 mmol is dissolved together with diethylamine (70 mg, 0.95 mmol) in methanol at an elevated temperature. The clear solution is left to slowly cool down to the room temperature and subsequently it is left to evaporate at the room temperature. 190 mg (81% yield) of the crystalline salt of dolutegravir with diethylamine in the molar ratio of 1 :1 (1H NMR) was obtained.
- Dolutegravir (2 g, 4.77 mmol) is dissolved together with N,N-dibenzylethylenediamine (1.2 g, 5.01 mmol) in a mixture of 10 ml of tetrahydrofuran and 25 ml of methanol at an elevated temperature. The clear solution is left to slowly cool down to the room temperature and subsequently it is left to crystallize in a refrigerator overnight. The produced crystals are aspirated and dried. 2.8 g (91% yield) of the crystalline salt of dolutegravir with ⁇ N-dibenzylethylenediamine in the molar ratio of 2:1 (1H NMR) was obtained.
- Dolutegravir (2 g, 4.77 mmol) is dissolved together with ethanolamine (310 mg, 5.01 mmol) in a mixture of tetrahydrofuran and methanol at an elevated temperature. The clear solution is left to slowly cool down to the room temperature and subsequently it is left to crystallize in a refrigerator overnight. The produced crystals are aspirated and dried freely at the room temperature. 2.20 g (94% yield) of a hydrated form of the crystalline salt of dolutegravir with ethanolamine in the molar ratio of 1 :1 ( ⁇ NMR) was obtained. If the crystals are dried in a vacuum drier at 40°C, an anhydrous form of the crystalline salt of dolutegravir with ethanolamine is obtained in the molar ratio of 1 : 1 ( H NMR).
- Dolutegravir (2 g, 4.77 mmol) is dissolved together with tromethamine (610 mg, 5.01 mmol) in methanol at an elevated temperature. The clear solution is left to slowly cool down to the room temperature and subsequently it is left to crystallize in a refrigerator overnight. The produced crystals are aspirated and dried. 2.4 g (92% yield) of the crystalline salt of dolutegravir with tromethamine in the molar ratio of 1:1 ( L H NMR) was obtained.
- Dolutegravir (200 mg, 0.48 mmol) is dissolved together with rerr-butylamine (70 mg, 0.95 mmol) in a mixture of methanol and tetrahydrofuran at an elevated temperature. The clear solution is left to slowly cool down to the room temperature and subsequently the product is left to crystallize in a refrigerator. 205 mg (87% yield) of the crystalline salt of dolutegravir with teri-butylamine in the molar ratio of 1 : 1 ('Hi NMR) was obtained.
- Dolutegravir 400 mg, 0.95 mmol is dissolved together with lysine (280 mg, 1.91 mmol) in a mixture of methanol and water (1 :1) at an elevated temperature. The clear solution is left to slowly cool down to the room temperature and subsequently it is left to crystallize in a refrigerator. The produced crystals are aspirated and dried. 470 mg (88% yield) of the crystalline salt of dolutegravir with lysine in the molar ratio of 1 :1 ( L H NMR) was obtained. Exam le 7
- Dolutegravir (5,0 g, 11.92 mmol) is dissolved together with potassium hydroxide (23,8 mmol) in a mixture of methanol and water at an elevated temperature. Subsequently, the mixture is left to cool down and crystallize in a refrigerator. The produced crystals are aspirated and dried. 4.45 g (89% yield) of the potassium salt of dolutegravir was obtained.
- Dolutegravir (500 mg, 1.19 mmol) is stirred up together with magnesium hydroxide (2.38 mmol) in a mixture of methanol and water. This mixture is stirred overnight in a suspension, then it is filtered and the crystals dried. 400 mg (80% yield) of the magnesium salt of dolutegravir was obtained.
- Dolutegravir (500 mg, 1.19 mmol) is stirred up together with calcium hydroxide (2.38 mmol) in a mixture of methanol and water. This mixture is stirred overnight and subsequently left to evaporate. The crystals are dried. 490 mg (98% yield) of the calcium salt of dolutegravir was obtained.
- Programmable divergence slits with the irradiated area of the sample of 10 mm, 0.02 rad S oiler slits and a 1 ⁇ 4° anti-diffusion slit were used for the setting of the primary optical equipment.
- An X'Celerator detector with maximum opening of the detection slot, 0.02 rad Soller slits and a 5.0 mm anti-diffusion slit were used for the setting of the secondary optical equipment.
- the nuclear magnetic resonance (MR) spectra were measured using a Bruker Avance 500 device.
- the ⁇ spectra were measured at the frequency of 500.13 MHz, l3 C at the frequency of 125.8 MHz.
- the sample was measured in a deuterated solvent specified for the particular analysis, normally at 25°C (unless specified otherwise for a particular analysis).
- the chemical shift 5 is expressed as ppm, the interaction constants J are specified in Hz.
- the spectra were normally referenced to the residual solvent content.
- Carbon spectra of solid-state nuclear magnetic resonance (ssNMR) were measured with the use of an Avance 400 WB Bruker device, using the CP/MAS method in a 4mm rotor at the speed of 13 kHz, normally at 25°C.
- the records of the differential scanning calorimetry (DSC) were measured using a DSC Pyris 1 device made by the company Perkin Elmer.
- the sample charge in a standard Al pot (40 ]iL) was between 2-4 mg and the heating rate was 10°C/min.
- the temperature program that was used consists of 1 min stabilization at the temperature of 20°C and then of heating up to 300°C at the heating rate of 10 °C/min. 4.0 N 2 at the flow rate of 20 ml min was used as the carrier gas.
- thermogravimetric analysis TGA 6 device made by the company Perkin Elmer.
- the sample charge in a corundum pot was 4-20 mg and the heatmg rate was 10°C/min.
- the temperature program that was used consists of 1 minute's stabilization at the temperature of 20°C and then of heating up to 250°C at the heating rate of 10°C/min. 4.0 N 2 at the flow rate of 20 ml/min was used as the carrier gas.
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Application Number | Priority Date | Filing Date | Title |
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CZ2015-99A CZ201599A3 (en) | 2015-02-13 | 2015-02-13 | Solid forms of dolutegravir salts and process for preparing thereof |
PCT/CZ2016/000019 WO2016127965A1 (en) | 2015-02-13 | 2016-02-12 | Solid forms of dolutegravir salts and a method of their preparation |
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WO2006116764A1 (en) | 2005-04-28 | 2006-11-02 | Smithkline Beecham Corporation | Polycyclic carbamoylpyridone derivative having hiv integrase inhibitory activity |
MX2011006241A (en) | 2008-12-11 | 2011-06-28 | Shionogi & Co | Synthesis of carbamoylpyridone hiv integrase inhibitors and intermediates. |
US9206197B2 (en) | 2011-09-14 | 2015-12-08 | Mapi Pharma Ltd. | Amorphous form of dolutegravir |
EP3022209B1 (en) * | 2013-07-17 | 2018-03-07 | ratiopharm GmbH | Dolutegravir potassium salt |
EP3096763B1 (en) * | 2014-01-21 | 2019-12-25 | Laurus Labs Limited | Novel process for the preparation of dolutegravir and pharmaceutically acceptable salts thereof |
ZA201503540B (en) * | 2014-05-20 | 2016-10-26 | Cipla Ltd | Process for preparing polycyclic carbamoyl pyridone derivatives |
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