EP2755968A1 - Neue polymorphe form von raltegravir-kalium - Google Patents
Neue polymorphe form von raltegravir-kaliumInfo
- Publication number
- EP2755968A1 EP2755968A1 EP12756733.7A EP12756733A EP2755968A1 EP 2755968 A1 EP2755968 A1 EP 2755968A1 EP 12756733 A EP12756733 A EP 12756733A EP 2755968 A1 EP2755968 A1 EP 2755968A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- raltegravir potassium
- starting material
- polymorphic
- water
- hours
- 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- Withdrawn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
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
- C07D413/12—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 linked by a chain containing hetero atoms as chain links
-
- 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
Definitions
- the present invention relates to a novel polymorphic form of Raltegravir potassium, Raltegravir potassium Form IV, and a process for their preparation.
- the invention further relates to the use of the novel polymorphic form of raltegravir potassium.
- Raltegravir is an antiretroviral agent used in particular in the form of pharmaceutically acceptable salts, preferably as raltegravir potassium, optionally in combination with other antiretroviral agents for the treatment of HIV infection.
- Raltegravir inhibits the strand transfer of HIV integrase, an HIV enzyme that integrates viral genetic material into human chromosomes.
- raltegravir potassium Various polymorphic forms of raltegravir potassium are known which differ in their physicochemical properties and the manner of their preparation.
- WO06060730 A2 and WO 06060712 A2 disclose (crystalline) potassium salts of raltegravir which differ in their physicochemical properties from the polymorph according to the invention.
- WO201 1/024192 A2 discloses processes for the preparation of the crystalline polymorphic forms I to III of Raltegravir potassium, among others. from amorphous raltegravir using various solvents and synthetic steps.
- the forms disclosed herein differ in their physicochemical properties from the subject matter of the present invention.
- WO 2010/140156 A2 discloses inter alia polymorphic Raltegravir potassium of the form H1, which can also be prepared using various solvents and synthetic steps and differs in its physicochemical properties from the subject matter of the present invention.
- a disadvantage of the preparation process of the substances described so far in the prior art is that the synthesis of the polymorphic / crystalline forms of the Raltegravir potassium is sometimes complicated.
- the known forms are also disadvantageous in comparison with the polymorph according to the invention in terms of processability, hygroscopicity and stability from a pharmaceutical point of view.
- Polymorphism in the context of the present invention refers to the ability of a substance to be present in more than one crystalline phase. These crystalline phases have different arrangements or conformations of the molecules in the crystal lattice. Therefore, polymorphs are different crystalline forms of the same pure substance in which the molecules have different arrangements or different configurations. Different polymorphs may differ in their physicochemical properties, such as melting point, solubility, X-ray diffraction pattern, etc. This may significantly affect the pharmaceutically-relevant properties (e.g., processability, solubility rate, chemical stability, etc.) for formulation of the drug into a solid dosage form.
- pharmaceutically-relevant properties e.g., processability, solubility rate, chemical stability, etc.
- hydration means the addition of water to ions or in the crystal lattice (water of crystallization).
- the attached water is called water of hydration.
- polymorphic forms of Raltegravir potassium can be characterized and distinguished from one another by analytical laboratory methods, such as X-ray diffractometric crystal structure analysis, Differential Scanning Calorimetry (DSC) and infrared spectrometry.
- analytical laboratory methods such as X-ray diffractometric crystal structure analysis, Differential Scanning Calorimetry (DSC) and infrared spectrometry.
- DSC Differential Scanning Calorimetry
- infrared spectrometry infrared spectrometry.
- the present invention provides a novel polymorph of Raltegravir potassium (referred to herein as Form IV) which has a hydrate water content of from 2.5% to 4.5%, preferably from 2.5% to 3.5%, most preferably from 2 , 7% to 3.3% and in particular from 3.2% to 3.3%.
- Form IV a novel polymorph of Raltegravir potassium
- the proportion of water of hydration in the formed polymorphic raltegravir potassium of Form IV is 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2% or 3.3%.
- the polymorph according to the invention is present in crystalline form.
- the crystal structure of polymorphic raltegravir potassium of Form IV can be characterized in the powder X-ray diffractogram.
- the powder X-ray diffractogram recorded at room temperature (18-25 ° C) has characteristic peaks at 8.0 ° C 2Theta (2Th), 12.0 ° C 2Th, 14.9 ° C 2Th, 18.1 ° C. 2h, 26.3 ° C 2h and 26.6 ° C 2h, with an error rate of +/- 0.3 ° 2h.
- the diffractogram may have further peaks.
- the present invention also provides a process for the preparation of form IV polymorphic Raltegravir potassium.
- the starting material is brought into contact with at least one fluid comprising water in a defined mass ratio of starting material to water.
- a hydration of the starting material takes place.
- the fluid can be water or a water-containing liquid.
- the process according to the invention is characterized in that the mass ratio of starting material to water which is brought into contact with the starting material is in the range from 10: 2 to 10: 5 and preferably is in the range of 10: 2.5 to 10: 4 or 10: 2.8 to 10: 3.5 and in particular 10: 3.
- the fluid is a water vapor-containing gas mixture.
- the fluid is air having a relative humidity (RH) of between 1% and 100% or between 30% and 99% or between 60% and 99% or between 70% and 99% or of 80% considered favorable and used as a fluid.
- RH relative humidity
- amorphous raltegravir potassium is used as the starting material.
- Preferred starting material is amorphous raltegravir potassium which is anhydrous or substantially anhydrous.
- anhydrous or substantially anhydrous means that the water content of the starting material is less than 2.5%, preferably less than 2.4%, 2.3%, 2.2%, 2.1%, and most preferably less than 2.0%.
- the hydration takes place at a temperature of 15 ° C to 35 ° C.
- the hydration temperature is between 20 ° C and 25 ° C and especially between 21 ° C and 23 ° C, that is, the hydration can be carried out substantially at room temperature. It is considered advantageous in this context if the temperature is kept constant over the reaction time. Incidentally, the same applies to the relative humidity of the fluid, if this is made available as a water vapor-containing gas mixture.
- the hydration reaction time is between 1 hour and 1, 200 hours.
- the hydration reaction time is between 12 and 600 hours.
- Particularly advantageous is a reaction time of 36 to 168 hours and in particular of 24 hours.
- the temperature at which the hydration reaction is carried out remains constant throughout the selected reaction time.
- a proportion of hydrated water in the formed polymorphic raltegravir potassium of form IV is from 2.5% to 4.5%, preferably from 2.5% to 3.5% and particularly preferably from 2.7% up to 3.3% and in particular from 3.2% to 3.3%.
- the proportion of water of hydration in the formed polymorphic raltegravir potassium of Form IV is 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2% or 3.3%.
- An embodiment of the process for the preparation of polymorphic Raltegravir potassium of Form IV considered advantageous as step (i) comprises contacting amorphous Raltegravir potassium as starting material with air having a relative humidity (RH) of 75% to 85% %, preferably 80%.
- RH relative humidity
- the bringing into contact takes place at a temperature of between 18 ° C and 25 ° C, in particular at 21 ° C.
- the reaction time is assumed to be 10 to 48 hours for hydration.
- the reaction time is preferably 18 to 26 hours, more preferably 24 hours.
- polymorphic Raltegravir potassium form IV can be isolated. The process does not require any further purification or other synthesis or reaction steps.
- An alternative process for preparing Form IV polymorphic raltegravir potassium provides that amorphous raltegravir potassium as starting material is contacted with water in liquid form as step (i) wherein the mass ratio of starting material to water is in the range of 10: 2.8 to 10: 3.5 and especially 10: 3.
- step (ii) the mixture obtainable from step (i) is incubated at room temperature, ie a temperature of between 18 ° C and 25 ° C, preferably 19 ° C and 22 ° C, more preferably at a temperature of 21 ° C. Incubation is done in this step for between 12 and 48 hours. An incubation time of between 18 and 26 hours is considered preferred, while incubation for 24 hours proves to be most favorable. It has proven to be advantageous that the mixture obtained from step (i) is not actively mixed during the incubation period (for example by stirring or shaking).
- step (iii) isolates form III polymorphic raltegravir potassium resulting from the hydration of raltegravir potassium as the starting material and the at least one fluid comprising water.
- the reaction product has the powder X-ray diffractogram described above for Raltegravir potassium of Form IV and the hydrate water portions mentioned above for Raltegravir potassium of Form IV.
- the starting material is anhydrous or substantially anhydrous amorphous raltegravir potassium as defined above.
- the inventive method is characterized by a low cost of equipment and the renunciation of other agents than the products used.
- the product raltegravir potassium of the formula IV obtained in the process, as defined above, is present in high purity and yield.
- the present invention also encompasses the use of form IV raltegravir potassium, as set forth above, for the preparation of a pharmaceutical composition.
- the invention relates to a use of form IV raltegravir potassium for use in medicine, in particular for the treatment of HIV infection.
- the polymorphic form IV of raltegravir potassium according to the invention is characterized by a long-term stability in solid dosage forms which is excellent from a pharmaceutical point of view.
- Raltegravir potassium form IV As defined above.
- Raltegravir potassium form IV may be present in combination with one or more active substances, in particular in combination with one or more further retroviral inhibitor (s) or other suitable active ingredients.
- the pharmaceutical composition is the Raltegravir potassium Form IV includes, for the treatment of HIV infection.
- Form IV raltegravir potassium can be used as a combination antiretroviral integrase inhibitor in a combination preparation.
- amorphous raltegravir potassium is stored in a weighing jar over a saturated aqueous ammonium chloride solution at 80% RH for 24 hours in a desiccator to produce Form IV polymorphic Raltegravir potassium from the amorphous starting material.
- amorphous raltegravir potassium 500mg is mixed with 150mg of water and mixed in an agate mortar. The substance is placed in a brown glass jar with rubber stopper and incubated at room temperature for 24 hours. As a result, the starting material is completely hydrated to Form IV polymorphic raltegravir potassium.
- the polymorphic form IV of the raltegravir potash of the invention which is obtainable in the above-described preparation processes, differs from the hitherto known forms I to III and H1 of the polymorphic raltegravir potassium.
- Evidence for this is provided by crystal structure analysis of the substance in the powder X-ray diffractometer, wherein a sample of the product is scattered on a silicon single crystal and the measurement is performed at room temperature.
- the found Form IV is crystalline and has an increased stability with reduced hygroscopicity. Also regarding Processability, chemical stability, flow behavior and compressibility represents the polymorph IV according to the invention or produced in the process according to the invention of Raltegravir potassium an improved variant of the active ingredient and differs significantly from the previously known polymorphic forms I - III and H1.
- Incubation can be made of the same form, Form IV, of Raltegravir potassium. This can be demonstrated by the diffractometric measurements.
- Fig. 1 shows a powder X-ray diffractogram.
- the results of the diffraction measurements of the crystal structure of Raltegravir potassium Form IV, which was prepared by incubation of the starting material with a relative humidity gas or gas mixture and on the other hand of form IV raltegravir potassium, which in the Variant of the method was prepared in which the starting material was first mixed with water and then incubated over a corresponding reaction period.
- the X-ray diffractograms show characteristic peaks at the same positions of the diffractogram. Thus, in both cases, it is the same substance which, as has been demonstrated, can be prepared in alternative procedures.
- the inventive polymorphic Raltegravir potassium Form IV can thus be prepared in the same quality in two alternative procedures.
- the present invention includes the following items: A process for producing form IV polymorphic raltegravir potassium, which comprises hydrating raltegravir potassium as a starting material by contacting the starting material with at least one fluid comprising water during a reaction time, wherein hydration of the
- the starting material is amorphous raltegravir potassium.
- a preferred embodiment of the process wherein the hydration at a temperature of between 15 ° C and 35 ° C, in particular between 15 ° C and 30 ° C, preferably between 20 ° C and 25 ° C, particularly preferably between 21 ° C and 23 ° C takes place.
- steam-containing gas mixture in particular air having a relative humidity (rF) of between 1 and 100%, or between 30 and 95%, or between 60 and 90%, or between 70 and 95%, or 80%.
- rF relative humidity
- a preferred embodiment of the method wherein the fluid is water or a hydrous liquid.
- reaction time for the hydration is between 1 hour and 1200 hours, in particular between 12 hours and 600 hours, preferably between 36 and 168 hours, particularly preferably 24 hours.
- temperature is kept constant over the reaction time.
- the fluid is a gas or gas mixture and wherein a relative moisture content of the gas or gas mixture is kept constant over the reaction time.
- a variant of the method comprising the steps:
- Starting material is anhydrous or substantially anhydrous.
- Polymorphic Raltegravir Potassium of Form IV available in a method as previously described.
- Form IV polymorphic raltegravir potassium showing, upon analysis of the crystal structure, a powder X-ray diffraction pattern with peaks at 8.0 ° 2Th, 12.0 ° 2Th, 14.9 ° 2Th, 18.1 ° 2Th, 26.3 ° 2Th and 26.6 ° 2Th, wherein the powder X-ray diffractogram is taken at room temperature, with an error rate of. +/- 0.3 ° 2Th,
- Form IV polymorphic raltegravir potassium having a hydrate water content of from 2.5% to 4.5%, preferably from 2.5% to 3.5%, and more preferably from 2.7% to 3.3% and especially from 3 , 2% to 3.3%.
- a pharmaceutical composition comprising Raltegravir potassium Form IV as defined above.
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- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Virology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Tropical Medicine & Parasitology (AREA)
- Communicable Diseases (AREA)
- Oncology (AREA)
- AIDS & HIV (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12756733.7A EP2755968A1 (de) | 2011-09-16 | 2012-09-10 | Neue polymorphe form von raltegravir-kalium |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11007545 | 2011-09-16 | ||
PCT/EP2012/067644 WO2013037731A1 (de) | 2011-09-16 | 2012-09-10 | Neue polymorphe form von raltegravir-kalium |
EP12756733.7A EP2755968A1 (de) | 2011-09-16 | 2012-09-10 | Neue polymorphe form von raltegravir-kalium |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2755968A1 true EP2755968A1 (de) | 2014-07-23 |
Family
ID=46829767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12756733.7A Withdrawn EP2755968A1 (de) | 2011-09-16 | 2012-09-10 | Neue polymorphe form von raltegravir-kalium |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2755968A1 (de) |
WO (1) | WO2013037731A1 (de) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011123754A1 (en) | 2010-04-01 | 2011-10-06 | Teva Pharmaceutical Industries Ltd. | Raltegravir salts and crystalline forms thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
UA87884C2 (uk) | 2004-12-03 | 2009-08-25 | Мерк Энд Ко., Инк. | Безводна кристалічна калієва сіль інгібітора віл-інтегрази |
US8742105B2 (en) | 2009-06-02 | 2014-06-03 | Hetero Research Foundation | Polymorphs of raltegravir potassium |
WO2011024192A2 (en) | 2009-07-27 | 2011-03-03 | Matrix Laboratories Ltd | Novel polymorphs of raltegravir |
-
2012
- 2012-09-10 WO PCT/EP2012/067644 patent/WO2013037731A1/de active Application Filing
- 2012-09-10 EP EP12756733.7A patent/EP2755968A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011123754A1 (en) | 2010-04-01 | 2011-10-06 | Teva Pharmaceutical Industries Ltd. | Raltegravir salts and crystalline forms thereof |
Non-Patent Citations (1)
Title |
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See also references of WO2013037731A1 |
Also Published As
Publication number | Publication date |
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WO2013037731A1 (de) | 2013-03-21 |
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