WO2020182978A1 - Crystalline salt of a 5-ht2a receptor antagonist - Google Patents

Crystalline salt of a 5-ht2a receptor antagonist Download PDF

Info

Publication number
WO2020182978A1
WO2020182978A1 PCT/EP2020/056785 EP2020056785W WO2020182978A1 WO 2020182978 A1 WO2020182978 A1 WO 2020182978A1 EP 2020056785 W EP2020056785 W EP 2020056785W WO 2020182978 A1 WO2020182978 A1 WO 2020182978A1
Authority
WO
WIPO (PCT)
Prior art keywords
lumateperone
crystalline
napadisylate
pharmaceutical composition
range
Prior art date
Application number
PCT/EP2020/056785
Other languages
French (fr)
Inventor
Hannes Lengauer
Arthur Pichler
Renate MARGREITER
Original Assignee
Sandoz Ag
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
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of WO2020182978A1 publication Critical patent/WO2020182978A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
    • C07D471/16—Peri-condensed systems

Definitions

  • the present invention relates to crystalline lumateperone naphthal ene- 1 , 5 -di sulfoni c acid addition salt and a process for its preparation.
  • the invention also relates to a pharmaceutical composition comprising crystalline lumateperone napadisylate, preferably in a predetermined and/or effective amount and at least one pharmaceutically acceptable excipient.
  • the pharmaceutical composition of the present invention can be used as a medicament, in particular for the treatment and/or prophylaxis of psychotic disorders such as schizophrenia.
  • Lumateperone is a potent 5-HT2A receptor antagonist with strong affinity for dopamine D2 receptors and the serotonine transporter (SERT) but negligible binding to receptors associated with cognitive and metabolic side effects of antipsychotic drugs. It is currently in clinical trials i.a. for treatement of schizophrenia.
  • Lumateperone can be chemically designated as 4-((6bi?, 10aV)-3 -methyl-2,3 ,6b, 9, 10, 1 Oa-hexahydro- 177-pyrido[3’ ,4’ : 4,5]pyrrolo[l,2,3-de]quinoxalin- 8(77 )-yl)- 1 -(4-fluorophenyl)- 1 -butanone or 1 -(4-fluorophenyl)-4-((6bR, 10aS)-3 -methyl-
  • WO 2009/114181 A2 mentions crystalline forms of lumateperone tosylate salt designated “Form A” and“Form B”. Furthermore, WO 2017/172784 A2 mentions in paragraph [0004] that salt formation has been proven to be unusally difficult for lumateperone. According to paragraph [0006] an extensive salt screening in different solvent systems and under different conditions was performed using a selection of over 100 acids including class I, II and III acids listed in Stahl P.H. et al., Handbook of Pharmaceutical Salts, IUPAC (2008). However, the excessive screening only revealed three hits, namely the oxalate, the 4-aminosalicylate and the cyclamate salt.
  • IN201741021763 describes crystalline lumaterperone hydrochloride, hydrobromide, citrate, phosphate, oxalate and di-p-to ⁇ uy ⁇ -T-tartrate .
  • salt formation is a common means for customizing the physicochemical properties of active pharmaceutical ingredients with a process or clinical need
  • known salt forms of lumateperone suffer from one or more drawbacks selected from the group consisting of low chemical purity, low crystallinity, significant amorphous content, high organic solvent content, solvate formation, low physical stability against temperature stress, poor powder properties e.g. sticky consistency.
  • the present invention relates to crystalline lumateperone naphthalene- 1 , 5 -di sulfonic acid addition salt.
  • Crystalline lumateperone napadisylate of the present invention possesses improved physical and chemical stability against temperature stress compared to known salt forms of lumateperone.
  • the crystalline lumateperone napadisylate shows a concomittant melting and decomposition process starting only at about 261°C, which indicates its excellent thermal stability.
  • room temperature refers to a temperature in the range of from 20 to 30 °C.
  • the term“measured at a temperature in the range of from 20 to 30 °C” refers to a measurement under standard conditions.
  • standard conditions mean a temperature in the range of from 20 to 30 °C, i.e. at room temperature.
  • Standard conditions can mean a temperature of about 22 °C.
  • standard conditions can additionally mean a measurement under 20-80% relative humidity, preferably 30-70% relative humidity, more preferably 40-60% relative humidity and most preferably 50% relative humidity.
  • the term“reflection” with regards to powder X-ray diffraction as used herein means peaks in an X-ray diffractogram, which are caused at certain diffraction angles (Bragg angles) by constructive interference from X-rays scattered by parallel planes of atoms in solid material, which are distributed in an ordered and repetitive pattern in a long-range positional order.
  • Such a solid material is classified as crystalline material, whereas amorphous material is defined as solid material which lacks long-range order and only displays short-range order, thus resulting in broad scattering.
  • long-range order e.g.
  • the term“essentially the same” with reference to powder X-ray diffraction means that variabilities in reflection positions and relative intensities of the reflections are to be taken into account.
  • a typical precision of the 2-Theta values is in the range of ⁇ 0.2° 2-Theta, preferably in the range of ⁇ 0.1° 2-Theta.
  • a reflection that usually appears at 6.5° 2-Theta for example can appear between 6.3° and 6.7° 2-Theta, preferably between 6.4 and 6.6° 2-Theta on most X-ray diffractometers under standard conditions.
  • relative reflection intensities will show inter-apparatus variability as well as variability due to degree of crystallinity, preferred orientation, sample preparation and other factors known to those skilled in the art and should be taken as qualitative measure only.
  • the term“essentially the same” with reference to Fourier transform infrared spectroscopy means that variabilities in peak positions and relative intensities of the peaks are to be taken into account.
  • a typical precision of the wavenumber values is in the range of ⁇ 4 cm 1 , preferably of ⁇ 2 cm 1 .
  • a peak at 1676 cm 1 for example can appear in the range of from 1672 to 1680 cm " l , preferably of from 1674 to 1678 on most infrared spectrometers under standard conditions.
  • Crystalline lumateperone napadisylate of the present invention may be referred to herein as being characterized by a powder X-ray diffractogram or an FTIR spectrum "as shown in” a figure.
  • the person skilled in the art understands that factors such as variations in instrument type, response and variations in sample directionality, sample concentration, sample purity, sample history and sample preparation may lead to variations, for example relating to the exact reflection and peak positions and their intensities.
  • a comparison of the graphical data in the figures herein with the graphical data generated for an unknown physical form and the confirmation that two sets of graphical data relate to the same crystal form is well within the knowledge of a person skilled in the art.
  • anhydrous refers to a compound where no water is cooperated in or accommodated by the crystal structure.
  • An anhydrous compound may still contain residual water, which is not part of the crystal structure but may be adsorbed on the surface or absorbed in disordered regions of the crystal.
  • non-solvated refers to a compound where no organic solvent is cooperated in or accommodated by the crystal structure.
  • a non-solvated compound may still contain residual organic solvent, which is not part of the crystal structure but may be adsorbed on the surface or absorbed in disordered regions of the crystal.
  • A“predetermined amount” as used herein with regards to crystalline lumateperone napadisylate of the present invention refers to the initial amount of the crystalline lumateperone napadisylate used for the preparation of a pharmaceutical composition having a desired dosage strength of lumateperone.
  • the term “effective amount” as used herein with regards to crystalline lumateperone napadisylate of the present invention encompasses an amount of crystalline lumateperone napadisylate, which causes the desired therapeutic and/or prophylactic effect.
  • the term“about” means within a statistically meaningful range of a value. Such a range can be within an order of magnitude, typically within 10%, more typically within 5%, even more typically within 1% and most typically within 0.1% of the indicated value or range. Sometimes, such a range can lie within the experimental error, typical of standard methods used for the measurement and/or determination of a given value or range.
  • Figure 1 illustrates a representative PXRD of crystalline lumateperone napadisylate of the present invention.
  • the x-axis shows the scattering angle in °2-Theta
  • the y-axis shows the intensity of the scattered X-ray beam in counts of detected photons.
  • Figure 2 illustrates a representative FTIR spectrum of crystalline lumateperone napadisylate of the present invention.
  • the x-axis shows the wavenumbers in cm 1
  • the y-axis shows the relative intensity in percent transmittance.
  • Figure 3 illustrates a representative DSC curve of crystalline lumateperone napadisylate of the present invention.
  • the x-axis shows the temperature in degree Celsius (°C)
  • the y-axis shows the heat flow rate in Watt per gram (W/g) with endothermic peaks going up.
  • the present invention relates to a crystalline salt comprising lumateperone and naphthalene- 1,5-disulfonic acid.
  • the present invention relates to crystalline lumateperone napadisylate.
  • the present invention relates to crystalline lumateperone napadisylate characterized by the chemical structure according to Formula (II)
  • n is in the range of from 0.8 to 1.2, preferably in the range of from 0.9 to 1.1, more preferably in the range of from 0.95 to 1.05 and most preferably n is about 1.0.
  • n is selected from the group consisting of about 0.8, 0.9, 0.95, 1.0, 1.05, 1.1 and 1.2.
  • the crystalline lumateperone napadisylate salt of the present invention is preferably a mono- napadisylate salt.
  • lumateperone may be in protonated form while naphthal ene- 1 , 5 -di sulfoni c acid may be in a deprotonated form.
  • the crystalline lumateperone napadisylate salt of the present invention as defined in any one of the above described embodiments may be characterized by analytical methods well known in the field of the pharmaceutical industry for characterizing solids. Such methods comprise but are not limited to powder X-ray diffraction, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis and gravimetric moisture sorption. It may be characterized by one of the aforementioned analytical methods or by combining two or more of them. In particular, crystalline lumateperone napadisylate of the present invention may be characterized by any one of the following embodiments or by combining two or more of the following embodiments.
  • the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of:
  • the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of:
  • the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of (6.5 ⁇ 0.2)°, (12.8 ⁇ 0.2)°, (13.1 ⁇ 0.2)°, (15.4 ⁇ 0.2)°, (16.5 ⁇ 0.2)°, (16.9 ⁇ 0.2)°, (17.6 ⁇ 0.2)°, (19.0 ⁇ 0.2)°, (22.7 ⁇ 0.2)° and (23.3 ⁇ 0.2), when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
  • the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of (6.5 ⁇ 0.1)°, (12.8 ⁇ 0.1)°, (13.1 ⁇ 0.1)°, (15.4 ⁇ 0.1)°, (16.5 ⁇ 0.1)°, (16.9 ⁇ 0.1)°, (17.6 ⁇ 0.1)°, (19.0 ⁇ 0.1)°, (22.7 ⁇ 0.1)° and (23.3 ⁇ 0.1), when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
  • the present invention also relates to crystalline lumateperone napadisylate characterized by having a PXRD essentially the same as shown in Figure 1 of the present invention, when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
  • the present invention relates to crystalline lumateperone napadisylate characterized by having an FTIR spectrum comprising peaks at wavenumbers of:
  • the present invention relates to crystalline lumateperone napadisylate characterized by having an FTIR spectrum comprising peaks at wavenumbers of:
  • the present invention relates to crystalline lumateperone napadisylate characterized by having an FTIR spectrum essentially the same as shown in Figure 2 of the present invention, when measured at a temperature in the range of from 20 to 30 °C with a diamond ATR cell. Furthermore, the present invention relates to crystalline lumateperone napadisylate characterized by having a DSC curve comprising an endothermic peak having an onset at a temperature of (261 ⁇ 5)°C, preferably of (261 ⁇ 3)°C, even more preferably of (261 ⁇ 2)°C and most preferably of (261 ⁇ 1)°C, when measured at a heating rate of 10 K/min.
  • the present invention also relates to crystalline lumateperone napadisylate characterized by having a DSC curve comprising an endothermic peak having a peak maximum at a temperature of (268 ⁇ 5)°C, preferably of (268 ⁇ 3)°C, even more preferably of (268 ⁇ 2)°C and most preferably of (268 ⁇ 1)°C, when measured a heating rate of 10 K/min.
  • the present invention relates to crystalline lumateperone napadisylate, characterized by having a TGA curve showing a mass loss of not more than 1.0 w-%, based on the weight of the crystalline lumateperone napadisylate, when heated from 25 to 230 °C at a rate of 10 K/min.
  • the present invention relates to crystalline lumateperone napadisylate characterized as being anhydrous.
  • the present invention relates to crystalline lumateperone napadisylate characterized as being non-solvated.
  • the invention relates to a process for the preparation of lumateperone napadisylate as defined in any one of the above described embodiments comprising:
  • step (d) separating at least a part of the crystals obtained in step (c);
  • step (e) optionally washing the isolated crystals of step (d);
  • Lumateperone free base may be prepared according to the synthesis disclosed in Example 261 of US 2006/0148808 Al .
  • a first step (a) of the above described process lumateperone free base is dissolved in a suitable solvent.
  • the suitable solvent comprises or is preferably a C1-C3 alcohol e.g. selected from the group consisting of methanol, ethanol, 1 -propanol and 2-propanol or any mixture thereof. Most preferably, the suitable solvent comprises or is ethanol.
  • the lumateperone free base concentration in relation to the applied solvent in step (a) is in the range of from 40 - 90 g/L, preferably of from 50 - 80 g/L and most preferably of from 60 - 70 g/L.
  • the dissolution step may be performed at room temperature or at elevated temperature e.g. at reflux temperature of the applied solvent or solvent mixture.
  • lumateperone free base is reacted with naphthalene- 1,5 disulfonic acid (e.g. with commercially available naphthalene- 1,5-disulfonic acid tetrahydrate from Aldrich ® ).
  • the acid may be added as solid or in form of a solution, preferably an aqueous solution.
  • the molar ratio of lumateperone free base and naphthalene- 1,5-disulfonic acid applied in step (b) is in the range of from 1.0: 1.0 - 3.0, preferably of from 1.0: 1.0 - 1.5 and most preferably of from 1.0: 1.0 - 1.2.
  • the reaction may be carried out at room temperature or at elevated temperature e.g. between room temperature and reflux temperature of the applied solvent. For example, the reaction may be carried out at about 50-70°C, e.g. at about 65°C.
  • temperature is selected such, that lumateperone and naphthalene- 1,5-disulfonic acid at least partially dissolve and most preferably both components dissolve completely.
  • the one or more antisolvent(s) may be selected from acetone, acetonitrile, methyl acetate, ethyl acetate, a C1-C3 alcohol e.g. selected from the group consisting of methanol, ethanol, 1 -propanol and 2-propanol or any mixture thereof. Most preferably, ethanol is used as anti solvent.
  • Antisolvent(s) is/are added in such an amount, that crystallization is initiated e.g. until the solution becomes slightly turbid. Additional antisolvent(s) may be added in order to improve the yield.
  • the anti solvent addition may be carried out at room temperature or at elevated temperature e.g.
  • the antisolvent addition may be carried out at about 50-70°C, e.g. at about 65°C.
  • the obtained suspension may then be further stirred until plentiful crystallization occurs e.g. for a period in the range of from 0.5 to 12 hours.
  • the suspension may be cooled e.g. to a temperature in the range of from 0 to 10 °C.
  • the crystals are separated from their mother liquor.
  • the crystals are separated from their mother liquor by any conventional method such as filtration, centrifugation, solvent evaporation or decantation, more preferably by filtration or centrifugation and most preferably by filtration.
  • the isolated crystals may be washed, preferably with one or more antisolvent(s).
  • the one or more antisolvent(s) may be selected from acetone, acetonitrile, methyl acetate, ethyl acetate, a C1-C3 alcohol e.g. selected from the group consisting of methanol, ethanol, 1 -propanol and 2-propanol or any mixture thereof. Most preferably, ethanol is used for washing.
  • drying may be performed at a temperature in the range of from about 20 to 120 °C, preferably of from about 20 to 100 °C , even more preferably of from about 40 to 60 °C such as about 50°C. Drying may be performed at ambient pressure and/or under reduced pressure. Preferably, drying is performed at a pressure of about 100 mbar or less, more preferably of about 50 mbar or less for example a vacuum of about 30 mbar or less. Drying may be performed for a period in the range of from about 1 to 24 hours, preferably from about 1 to 12 hours and most preferably from about 2 to 6 hours.
  • the present invention relates to the use of crystalline lumateperone napadisylate of the present invention as defined in any one of the embodiments described above for the preparation of a pharmaceutical composition.
  • the present invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising crystalline lumateperone napadisylate of the present invention as defined in any one of the embodiments described above, preferably in an effective and/or predetermined amount, and at least one pharmaceutically acceptable excipient.
  • the pharmaceutical composition of the present invention is an oral solid dosage form, such as a tablet, a capsule or a powder for solution. More preferably, the pharmaceutical composition of the present invention is a tablet e.g. a film-coated tablet or a capsule e.g. a hard gelatin capsule.
  • the at least one pharmaceutically acceptable excipient which is comprised in the pharmaceutical composition of the present invention, is preferably selected from the group consisting of fillers, disintegrants, wetting agents, lubricants, glidants, coating materials and any combinations thereof.
  • the at least one pharmaceutically acceptable excipient comprises at least one filler and/or at least one disintegrant.
  • the present invention relates to a pharmaceutical composition as describe above, wherein the predetermined and/or effective amount of crystalline lumateperone napadisylate of the present invention is selected from the group consisting of 9 mg, 20 mg, 40 mg and 60 mg calculated as lumateperone free base.
  • the invention relates to a pharmaceutical composition as describe above, wherein the predetermined and/or effective amount of of crystalline lumateperone napadisylate of the present invention is 20 mg, 40 mg or 60 mg calculated as lumateperone free base.
  • the present invention relates to a pharmaceutical composition as defined in any one of the above described embodiments, wherein the pharmaceutical composition is to be administered once-daily.
  • the present invention relates to the pharmaceutical composition as defined in any one of the above described embodiments for use as a medicament.
  • the present invention relates to the pharmaceutical composition as defined in any one of the above described embodiments for use in the treatment and/or prophylaxis of mental disorders.
  • the present invention also relates to the pharmaceutical composition as defined in any one of the above described embodiments for use in the treatment and/or prophylaxis of a condition selected from the group consisting of schizophrenia, bipolar depression, major despressive disorder, autism, behavioural disturbances associated with dementia including Morbus Alzheimer and sleep disturbances associated with neuro-psychiatric disorders. Most preferably, the invention relates to the pharmaceutical composition as defined in any one of the above described embodiments for use in the treatment and/or prophylaxis of schizophrenia.
  • the present invention is directed to a method of treating or prophylactically preventing a condition selected from the group consisting schizophrenia, bipolar depression, major despressive disorder, autism, behavioural disturbances associated with dementia including Morbus Alzheimer and sleep disturbances associated with neuro psychiatric disorders.
  • a condition selected from the group consisting schizophrenia, bipolar depression, major despressive disorder, autism, behavioural disturbances associated with dementia including Morbus Alzheimer and sleep disturbances associated with neuro psychiatric disorders.
  • the condition is schizophrenia.
  • FTIR spectrum was recorded (obtained) on a MKII Golden GateTM Single Reflection Diamond ATR cell with a Bruker Tensor 27 FTIR spectrometer with 4 cm 1 resolution at a temperature in the range of from 20 to 30 °C.
  • a spatula tip of the sample was applied to the surface of the diamond in powder form. Then the sample was pressed onto the diamond with a sapphire anvil and the spectrum was recorded. A spectrum of the clean diamond was used as background spectrum.
  • a typical precision of the wavenumber values is in the range of ⁇ 4 cm 1 preferably of ⁇ 2 cm
  • DSC was performed on a Mettler Polymer DSC R instrument. Lumateperone napadisylate (4.17 mg) and lumateperone hydrobromide (4.11 mg) were heated in 40 microliter aluminium pans with pierced aluminium lids from 25 to 250°C (lumateperone hydrobromide) and from 25 to 300°C (lumateperone napadisylate) at a rate of 10 K/min, respectively. Nitrogen (purge rate 50 mL/min) was used as purge gas.
  • TGA was performed on a Mettler TGA/DSC 1 instrument.
  • Lumateperone napadisylate (6.56 mg) was heated in a 100 microliter aluminum pan closed with an aluminum lid. The lid was automatically pierced at the beginning of the measurement. The samples were heated from 25 to 260°C at a rate of 10 K/min. Nitrogen (purge rate 50 mL/min) was used as purge gas.
  • Example 2 Solid-state characterization of crystalline lumateperone napadisylate
  • a representative diffractogram of crystalline lumateperone napadisylate is displayed in Figure 1 herein.
  • the corresponding reflection list is provided in Table 1 below.
  • Table 1 PXRD reflections of crystalline lumateperone napadisylate in the range of from 2 to 30° 2- Theta; A typical precision of the 2-Theta values is in the range of ⁇ 0.2° 2-Theta, preferably of ⁇ 0.1° 2-Theta.
  • a representative FTIR spectrum of crystalline lumateperone napadisylate according to the present invention is displayed in Figure 2 and the corresponding peak list is provided in Table 2 below.
  • Table 2 FTIR peak list of crystalline lumateperone napadisylate according to the present invention; a typical precision of the wavenumbers is in the range of ⁇ 4 cm 1 , preferably of ⁇ 2 cm 1 .
  • the DSC curve of crystalline lumateperone napadisylate which is also displayed in Figure 3 herein, shows an endothermic peak with an onset temperature of about 261°C and a peak maximum temperature of about 268°C. The endotherm is immediately followed by an exothermic peak, which indicates that the sample melts under decomposition.
  • the crystalline lumateperone napadisylate salt of the present invention is by far the most thermally stable salt form of lumateperone.
  • An overview of the onset temperatures of the first thermal events (endotherm s) during DSC experiments of various crystalline lumateperone salts is provided in Table 3 below:
  • Lumateperone free base (346 mg, 0.88 mmol, e.g. prepared according to Example 261 US 2006/0148808 Al) was dissolved in ethanol (4.1 mL) at RT before aqueous hydrobromic acid (assay 47%, 215 pL) was added. «-Heptane (1.5 mL) was added and the mixture was stirred for 3 hours at RT before the suspension was kept in the fridge at 2-8°C for another 17 hours. The obtained crystals were then collected by filtration and dried at RT under vacuum.
  • the so obtained lumateperone hydrobromide was analyzed by DSC.
  • the DSC curve shows a first broad endothermic peak in the range of was 40-110°C with an onset temperature of about 54°C and a second endotherm in the range of from 155-190°C with an onset temperature of about 168°C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The present invention relates to crystalline lumateperone naphthalene-1,5-disulfonic acid addition salt and a process for its preparation. The invention also relates to a pharmaceutical composition comprising crystalline lumateperone napadisylate, preferably in a predetermined and/or effective amount and at least one pharmaceutically acceptable excipient. The pharmaceutical composition of the present invention can be used as a medicament, in particular for the treatment and/or prophylaxis of psychotic disorders such as schizophrenia.

Description

CRYSTALLINE SALT OF A 5-HT2A RECEPTOR ANTAGONIST
FIELD OF THE INVENTION
The present invention relates to crystalline lumateperone naphthal ene- 1 , 5 -di sulfoni c acid addition salt and a process for its preparation. The invention also relates to a pharmaceutical composition comprising crystalline lumateperone napadisylate, preferably in a predetermined and/or effective amount and at least one pharmaceutically acceptable excipient. The pharmaceutical composition of the present invention can be used as a medicament, in particular for the treatment and/or prophylaxis of psychotic disorders such as schizophrenia.
BACKGROUND OF THE INVENTION
Lumateperone is a potent 5-HT2A receptor antagonist with strong affinity for dopamine D2 receptors and the serotonine transporter (SERT) but negligible binding to receptors associated with cognitive and metabolic side effects of antipsychotic drugs. It is currently in clinical trials i.a. for treatement of schizophrenia. Lumateperone can be chemically designated as 4-((6bi?, 10aV)-3 -methyl-2,3 ,6b, 9, 10, 1 Oa-hexahydro- 177-pyrido[3’ ,4’ : 4,5]pyrrolo[l,2,3-de]quinoxalin- 8(77 )-yl)- 1 -(4-fluorophenyl)- 1 -butanone or 1 -(4-fluorophenyl)-4-((6bR, 10aS)-3 -methyl-
2,3,6b,9,10, 10a-hexahydro-lH-pyrido[3',4':4,5]pyrrolo[l,2,3-de]quinoxalin-8(7i7)-yl)butan-l- one and is represented by the following chemical structure according to Formula (I)
Figure imgf000003_0001
Formula (I).
US 2006/0148808 A1 discloses lumateperone free base (example 261, obtained as viscious tan liquid) and pharmaceutically acceptable salt forms thereof, whereat a generic list of possible salts is given in paragraph [3149]
WO 2009/114181 A2 mentions crystalline forms of lumateperone tosylate salt designated “Form A” and“Form B”. Furthermore, WO 2017/172784 A2 mentions in paragraph [0004] that salt formation has been proven to be unusally difficult for lumateperone. According to paragraph [0006] an extensive salt screening in different solvent systems and under different conditions was performed using a selection of over 100 acids including class I, II and III acids listed in Stahl P.H. et al., Handbook of Pharmaceutical Salts, IUPAC (2008). However, the excessive screening only revealed three hits, namely the oxalate, the 4-aminosalicylate and the cyclamate salt.
IN201741021763 describes crystalline lumaterperone hydrochloride, hydrobromide, citrate, phosphate, oxalate and di-p-to\uy\ -T-tartrate .
Although salt formation is a common means for customizing the physicochemical properties of active pharmaceutical ingredients with a process or clinical need, known salt forms of lumateperone suffer from one or more drawbacks selected from the group consisting of low chemical purity, low crystallinity, significant amorphous content, high organic solvent content, solvate formation, low physical stability against temperature stress, poor powder properties e.g. sticky consistency.
Hence, there remains a need for improved salt forms of lumateperone possessing physicochemical properties which allow for the stable formulation of the lumateperone salt into a pharmaceutical dosage form such that reliable quality and efficacy of the drug product containing the lumateperone salt are maintained throughout shelf-life.
SUMMARY OF THE INVENTION
The present invention relates to crystalline lumateperone naphthalene- 1 , 5 -di sulfonic acid addition salt. Crystalline lumateperone napadisylate of the present invention possesses improved physical and chemical stability against temperature stress compared to known salt forms of lumateperone. In particular, the crystalline lumateperone napadisylate shows a concomittant melting and decomposition process starting only at about 261°C, which indicates its excellent thermal stability.
Abbreviations
PXRD powder X-ray diffractogram
FTIR Fourier transform infrared
ATR attenuated total reflection
DSC differential scanning calorimetry
TGA thermogravimetric analysis w-% weight percent
Definitions
In the context of the present invention the following definitions have the indicated meaning, unless explicitly stated otherwise:
As used herein the term“room temperature” refers to a temperature in the range of from 20 to 30 °C.
As used herein, the term“measured at a temperature in the range of from 20 to 30 °C” refers to a measurement under standard conditions. Typically, standard conditions mean a temperature in the range of from 20 to 30 °C, i.e. at room temperature. Standard conditions can mean a temperature of about 22 °C. Typically, standard conditions can additionally mean a measurement under 20-80% relative humidity, preferably 30-70% relative humidity, more preferably 40-60% relative humidity and most preferably 50% relative humidity.
The term“reflection” with regards to powder X-ray diffraction as used herein, means peaks in an X-ray diffractogram, which are caused at certain diffraction angles (Bragg angles) by constructive interference from X-rays scattered by parallel planes of atoms in solid material, which are distributed in an ordered and repetitive pattern in a long-range positional order. Such a solid material is classified as crystalline material, whereas amorphous material is defined as solid material which lacks long-range order and only displays short-range order, thus resulting in broad scattering. According to literature, long-range order e.g. extends over approximately 100 to 1000 atoms, whereas short-range order is over a few atoms only (see“Fundamentals of Powder Diffraction and Structural Characterization of Materials” by Vitalij K. Pecharsky and Peter Y. Zavalij, Kluwer Academic Publishers, 2003, page 3).
The term“essentially the same” with reference to powder X-ray diffraction means that variabilities in reflection positions and relative intensities of the reflections are to be taken into account. For example, a typical precision of the 2-Theta values is in the range of ± 0.2° 2-Theta, preferably in the range of ± 0.1° 2-Theta. Thus, a reflection that usually appears at 6.5° 2-Theta for example can appear between 6.3° and 6.7° 2-Theta, preferably between 6.4 and 6.6° 2-Theta on most X-ray diffractometers under standard conditions. Furthermore, one skilled in the art will appreciate that relative reflection intensities will show inter-apparatus variability as well as variability due to degree of crystallinity, preferred orientation, sample preparation and other factors known to those skilled in the art and should be taken as qualitative measure only. The term“essentially the same” with reference to Fourier transform infrared spectroscopy means that variabilities in peak positions and relative intensities of the peaks are to be taken into account. For example, a typical precision of the wavenumber values is in the range of ± 4 cm 1, preferably of± 2 cm 1. Thus, a peak at 1676 cm 1 for example can appear in the range of from 1672 to 1680 cm" l, preferably of from 1674 to 1678 on most infrared spectrometers under standard conditions. Differences in relative intensities are typically smaller compared to X-ray diffraction. However, one skilled in the art will appreciate that small differences in peak intensities due to degree of crystallinity, sample preparation and other factors can also occur in infrared spectroscopy. Relative peak intensities should therefore be taken as qualitative measure only.
Crystalline lumateperone napadisylate of the present invention may be referred to herein as being characterized by a powder X-ray diffractogram or an FTIR spectrum "as shown in" a figure. The person skilled in the art understands that factors such as variations in instrument type, response and variations in sample directionality, sample concentration, sample purity, sample history and sample preparation may lead to variations, for example relating to the exact reflection and peak positions and their intensities. However, a comparison of the graphical data in the figures herein with the graphical data generated for an unknown physical form and the confirmation that two sets of graphical data relate to the same crystal form is well within the knowledge of a person skilled in the art.
The term“anhydrous” as used herein refers to a compound where no water is cooperated in or accommodated by the crystal structure. An anhydrous compound may still contain residual water, which is not part of the crystal structure but may be adsorbed on the surface or absorbed in disordered regions of the crystal.
The term“non-solvated” as used herein refer to a compound where no organic solvent is cooperated in or accommodated by the crystal structure. A non-solvated compound may still contain residual organic solvent, which is not part of the crystal structure but may be adsorbed on the surface or absorbed in disordered regions of the crystal.
A“predetermined amount” as used herein with regards to crystalline lumateperone napadisylate of the present invention refers to the initial amount of the crystalline lumateperone napadisylate used for the preparation of a pharmaceutical composition having a desired dosage strength of lumateperone. The term “effective amount” as used herein with regards to crystalline lumateperone napadisylate of the present invention encompasses an amount of crystalline lumateperone napadisylate, which causes the desired therapeutic and/or prophylactic effect.
As used herein, the term“about” means within a statistically meaningful range of a value. Such a range can be within an order of magnitude, typically within 10%, more typically within 5%, even more typically within 1% and most typically within 0.1% of the indicated value or range. Sometimes, such a range can lie within the experimental error, typical of standard methods used for the measurement and/or determination of a given value or range.
BRIEF DESCRIPTION OF THE FIGURES
Figure 1: illustrates a representative PXRD of crystalline lumateperone napadisylate of the present invention. The x-axis shows the scattering angle in °2-Theta, the y-axis shows the intensity of the scattered X-ray beam in counts of detected photons.
Figure 2: illustrates a representative FTIR spectrum of crystalline lumateperone napadisylate of the present invention. The x-axis shows the wavenumbers in cm 1, the y-axis shows the relative intensity in percent transmittance.
Figure 3: illustrates a representative DSC curve of crystalline lumateperone napadisylate of the present invention. The x-axis shows the temperature in degree Celsius (°C), the y-axis shows the heat flow rate in Watt per gram (W/g) with endothermic peaks going up.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a crystalline salt comprising lumateperone and naphthalene- 1,5-disulfonic acid. In particular, the present invention relates to crystalline lumateperone napadisylate. More precisely, the present invention relates to crystalline lumateperone napadisylate characterized by the chemical structure according to Formula (II)
Figure imgf000007_0001
Formula (II), wherein n is in the range of from 0.8 to 1.2, preferably in the range of from 0.9 to 1.1, more preferably in the range of from 0.95 to 1.05 and most preferably n is about 1.0. For example, n is selected from the group consisting of about 0.8, 0.9, 0.95, 1.0, 1.05, 1.1 and 1.2. The crystalline lumateperone napadisylate salt of the present invention is preferably a mono- napadisylate salt. The skilled person will appreciate that in the crystalline lumateperone napadisylate of the present invention lumateperone may be in protonated form while naphthal ene- 1 , 5 -di sulfoni c acid may be in a deprotonated form.
The crystalline lumateperone napadisylate salt of the present invention as defined in any one of the above described embodiments may be characterized by analytical methods well known in the field of the pharmaceutical industry for characterizing solids. Such methods comprise but are not limited to powder X-ray diffraction, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis and gravimetric moisture sorption. It may be characterized by one of the aforementioned analytical methods or by combining two or more of them. In particular, crystalline lumateperone napadisylate of the present invention may be characterized by any one of the following embodiments or by combining two or more of the following embodiments.
The present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of:
(6.5 ± 0.2)°, (7.8 ± 0.2)° and (19.0 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (11.3 ± 0.2)° and (19.0 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (11.3 ± 0.2)°, (17.6 ± 0.2)° and (19.0 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (11.3 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)° and (23.3 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)° and (23.3 ±
0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (15.4 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)° and (23.3 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (15.4 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)° and (23.3 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)° and (23.3 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)° and (23.3 ± 0.2)°; or (6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)°, (23.3 ± 0.2)° and (26.6 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)°, (23.3 ± 0.2)°, (24.9 ± 0.2)° and (26.6 ± 0.2)°; or (6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (13.1 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)°, (23.3 ± 0.2)°, (24.9 ± 0.2)° and (26.6 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (13.1 ± 0.2)°, (14.2 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)°, (23.3 ± 0.2)°, (24.9 ± 0.2)° and (26.6 ± 0.2)°; or
(6.5 ± 0.2)°, (7.8 ± 0.2)°, (9.3 ± 0.2)°, (11.3 ± 0.2)°, (12.8 ± 0.2)°, (13.1 ± 0.2)°, (14.2 ± 0.2)°, (14.9 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)°, (23.3 ± 0.2)°, (24.9 ± 0.2)° and (26.6 ± 0.2)°,
when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
Alternatively, the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of:
(6.5 ± 0.1)°, (7.8 ± 0.1)° and (19.0 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (11.3 ± 0.1)° and (19.0 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (11.3 ± 0.1)°, (17.6 ± 0.1)° and (19.0 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (11.3 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)° and (23.3 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)° and (23.3 ±
0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (15.4 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)° and (23.3 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (15.4 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)° and (23.3 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)° and (23.3 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)° and (23.3 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)°, (23.3 ± 0.1)° and (26.6 ± 0.1)°; or (6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)°, (23.3 ± 0.1)°, (24.9 ± 0.1)° and (26.6 ± 0.1)°; or (6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (13.1 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)°, (23.3 ± 0.1)°, (24.9 ± 0.1)° and (26.6 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (13.1 ± 0.1)°, (14.2 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)°, (23.3 ± 0.1)°, (24.9 ± 0.1)° and (26.6 ± 0.1)°; or
(6.5 ± 0.1)°, (7.8 ± 0.1)°, (9.3 ± 0.1)°, (11.3 ± 0.1)°, (12.8 ± 0.1)°, (13.1 ± 0.1)°, (14.2 ± 0.1)°, (14.9 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)°, (23.3 ± 0.1 )°, (24.9 ± 0.1)° and (26.6 ± 0.1 )°,
when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
In addition, the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of (6.5 ± 0.2)°, (12.8 ± 0.2)°, (13.1 ± 0.2)°, (15.4 ± 0.2)°, (16.5 ± 0.2)°, (16.9 ± 0.2)°, (17.6 ± 0.2)°, (19.0 ± 0.2)°, (22.7 ± 0.2)° and (23.3 ± 0.2), when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
Alternatively, the present invention relates to crystalline lumateperone napadisylate characterized by having a PXRD comprising reflections at 2-Theta angles of (6.5 ± 0.1)°, (12.8 ± 0.1)°, (13.1 ± 0.1)°, (15.4 ± 0.1)°, (16.5 ± 0.1)°, (16.9 ± 0.1)°, (17.6 ± 0.1)°, (19.0 ± 0.1)°, (22.7 ± 0.1)° and (23.3 ± 0.1), when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
The present invention also relates to crystalline lumateperone napadisylate characterized by having a PXRD essentially the same as shown in Figure 1 of the present invention, when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
Moreover, the present invention relates to crystalline lumateperone napadisylate characterized by having an FTIR spectrum comprising peaks at wavenumbers of:
(3007 ± 4) cm 1, (1676 ± 4) cm 1 and (1023 ± 4) cm 1; or
(3007 ± 4) cm 1, (1676 ± 4) cm 1, (1158 ± 4) cm 1 and (1023 ± 4) cm 1; or (3007 ± 4) cm1, (1676 ± 4) cm1, (1229 ± 4) cm1, (1158 ± 4) cm1 and (1023 ± 4) cm1; or (3007 ± 4) cm1, (1676 ± 4) cm1, (1229 ± 4) cm1, (1158 ± 4) cm1, (1023 ± 4) cm1 and (801 ± 4) cm1; or
(3007 ± 4) cm1, (1676 ± 4) cm1, (1229 ± 4) cm1, (1158 ± 4) cm1, (1023 ± 4) cm1, (801 ± 4) cm1 and (763 ± 4) cm1; or
(3007 ± 4) cm1, (1676 ± 4) cm1, (1290 ± 4) cm1, (1229 ± 4) cm1, (1158 ± 4) cm1, (1023 ± 4) cm1, (801 ± 4) cm1 and (763 ± 4) cm1; or
(3007 ± 4) cm1, (1676 ± 4) cm1, (1599 ± 4) cm1, (1290 ± 4) cm1, (1229 ± 4) cm1, (1158 ± 4) cm1, (1023 ± 4) cm1, (801 ± 4) cm1 and (763 ± 4) cm1; or
(3007 ± 4) cm1, (1676 ± 4) cm1, (1599 ± 4) cm1, (1290 ± 4) cm1, (1229 ± 4) cm1, (1158 ±
4) cm1, (1023 ± 4) cm1, (801 ± 4) cm1 , (763 ± 4) cm1 and (610 ± 4) cm1,
when measured at a temperature in the range of from 20 to 30 °C with a diamond ATR cell.
Alternatively, the present invention relates to crystalline lumateperone napadisylate characterized by having an FTIR spectrum comprising peaks at wavenumbers of:
(3007 ± 2) cm1, (1676 ± 2) cm1 and (1023 ± 2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1158 ± 2) cm1 and (1023 ± 2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1229 ± 2) cm1, (1158 ± 2) cm1 and (1023 ± 2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1229 ± 2) cm1, (1158 ± 2) cm1, (1023 ± 2) cm1 and (801 ±
2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1229 ± 2) cm1, (1158 ± 2) cm1, (1023 ± 2) cm1, (801 ± 2) cm1 and (763 ± 2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1290 ± 2) cm1, (1229 ± 2) cm1, (1158 ± 2) cm1, (1023 ± 2) cm1, (801 ± 2) cm1 and (763 ± 2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1599 ± 2) cm1, (1290 ± 2) cm1, (1229 ± 2) cm1, (1158 ±
2) cm1, (1023 ± 2) cm1, (801 ± 2) cm1 and (763 ± 2) cm1; or
(3007 ± 2) cm1, (1676 ± 2) cm1, (1599 ± 2) cm1, (1290 ± 2) cm1, (1229 ± 2) cm1, (1158 ±
2) cm1, (1023 ± 2) cm1, (801 ± 2) cm1 , (763 ± 2) cm1 and (610 ± 2) cm1,
when measured at a temperature in the range of from 20 to 30 °C with a diamond ATR cell.
In addition, the present invention relates to crystalline lumateperone napadisylate characterized by having an FTIR spectrum essentially the same as shown in Figure 2 of the present invention, when measured at a temperature in the range of from 20 to 30 °C with a diamond ATR cell. Furthermore, the present invention relates to crystalline lumateperone napadisylate characterized by having a DSC curve comprising an endothermic peak having an onset at a temperature of (261 ± 5)°C, preferably of (261 ± 3)°C, even more preferably of (261 ± 2)°C and most preferably of (261 ± 1)°C, when measured at a heating rate of 10 K/min.
The present invention also relates to crystalline lumateperone napadisylate characterized by having a DSC curve comprising an endothermic peak having a peak maximum at a temperature of (268 ± 5)°C, preferably of (268 ± 3)°C, even more preferably of (268 ± 2)°C and most preferably of (268 ± 1)°C, when measured a heating rate of 10 K/min.
In another embodiment, the present invention relates to crystalline lumateperone napadisylate, characterized by having a TGA curve showing a mass loss of not more than 1.0 w-%, based on the weight of the crystalline lumateperone napadisylate, when heated from 25 to 230 °C at a rate of 10 K/min.
Preferably, the present invention relates to crystalline lumateperone napadisylate characterized as being anhydrous.
More preferably, the present invention relates to crystalline lumateperone napadisylate characterized as being non-solvated.
In another aspect, the invention relates to a process for the preparation of lumateperone napadisylate as defined in any one of the above described embodiments comprising:
(a) dissolving lumateperone free base in a suitable solvent;
(b) adding naphthalene- 1 , 5 -di sulfonic acid to the solution obtained in (a);
(c) adding one or more antisolvent(s) to the reaction mixture obtained in (b);
(d) separating at least a part of the crystals obtained in step (c);
(e) optionally washing the isolated crystals of step (d); and
(f) drying the crystals obtained in step (d) or (e).
Lumateperone free base may be prepared according to the synthesis disclosed in Example 261 of US 2006/0148808 Al .
In a first step (a) of the above described process lumateperone free base is dissolved in a suitable solvent. The suitable solvent comprises or is preferably a C1-C3 alcohol e.g. selected from the group consisting of methanol, ethanol, 1 -propanol and 2-propanol or any mixture thereof. Most preferably, the suitable solvent comprises or is ethanol. The lumateperone free base concentration in relation to the applied solvent in step (a) is in the range of from 40 - 90 g/L, preferably of from 50 - 80 g/L and most preferably of from 60 - 70 g/L. The dissolution step may be performed at room temperature or at elevated temperature e.g. at reflux temperature of the applied solvent or solvent mixture.
In the next step (b) lumateperone free base is reacted with naphthalene- 1,5 disulfonic acid (e.g. with commercially available naphthalene- 1,5-disulfonic acid tetrahydrate from Aldrich®). The acid may be added as solid or in form of a solution, preferably an aqueous solution.
The molar ratio of lumateperone free base and naphthalene- 1,5-disulfonic acid applied in step (b) is in the range of from 1.0: 1.0 - 3.0, preferably of from 1.0: 1.0 - 1.5 and most preferably of from 1.0: 1.0 - 1.2. The reaction may be carried out at room temperature or at elevated temperature e.g. between room temperature and reflux temperature of the applied solvent. For example, the reaction may be carried out at about 50-70°C, e.g. at about 65°C. Preferably, temperature is selected such, that lumateperone and naphthalene- 1,5-disulfonic acid at least partially dissolve and most preferably both components dissolve completely.
Once the reaction is complete, crystallization is initiated by adding one or more antisolvent(s). The one or more antisolvent(s) may be selected from acetone, acetonitrile, methyl acetate, ethyl acetate, a C1-C3 alcohol e.g. selected from the group consisting of methanol, ethanol, 1 -propanol and 2-propanol or any mixture thereof. Most preferably, ethanol is used as anti solvent. Antisolvent(s) is/are added in such an amount, that crystallization is initiated e.g. until the solution becomes slightly turbid. Additional antisolvent(s) may be added in order to improve the yield. The anti solvent addition may be carried out at room temperature or at elevated temperature e.g. between room temperature and reflux temperature of the solution obtained in step (b). For example, the antisolvent addition may be carried out at about 50-70°C, e.g. at about 65°C. The obtained suspension may then be further stirred until plentiful crystallization occurs e.g. for a period in the range of from 0.5 to 12 hours. In order to further increase the yield, the suspension may be cooled e.g. to a temperature in the range of from 0 to 10 °C.
In the next step (d), at least a part of the crystals are separated from their mother liquor. Preferably, the crystals are separated from their mother liquor by any conventional method such as filtration, centrifugation, solvent evaporation or decantation, more preferably by filtration or centrifugation and most preferably by filtration. In an optional step (e), the isolated crystals may be washed, preferably with one or more antisolvent(s). The one or more antisolvent(s) may be selected from acetone, acetonitrile, methyl acetate, ethyl acetate, a C1-C3 alcohol e.g. selected from the group consisting of methanol, ethanol, 1 -propanol and 2-propanol or any mixture thereof. Most preferably, ethanol is used for washing.
Finally, the obtained crystals are dried, wherein drying may be performed at a temperature in the range of from about 20 to 120 °C, preferably of from about 20 to 100 °C , even more preferably of from about 40 to 60 °C such as about 50°C. Drying may be performed at ambient pressure and/or under reduced pressure. Preferably, drying is performed at a pressure of about 100 mbar or less, more preferably of about 50 mbar or less for example a vacuum of about 30 mbar or less. Drying may be performed for a period in the range of from about 1 to 24 hours, preferably from about 1 to 12 hours and most preferably from about 2 to 6 hours.
In a further aspect the present invention relates to the use of crystalline lumateperone napadisylate of the present invention as defined in any one of the embodiments described above for the preparation of a pharmaceutical composition.
In a further aspect, the present invention relates to a pharmaceutical composition comprising crystalline lumateperone napadisylate of the present invention as defined in any one of the embodiments described above, preferably in an effective and/or predetermined amount, and at least one pharmaceutically acceptable excipient. Preferably, the pharmaceutical composition of the present invention is an oral solid dosage form, such as a tablet, a capsule or a powder for solution. More preferably, the pharmaceutical composition of the present invention is a tablet e.g. a film-coated tablet or a capsule e.g. a hard gelatin capsule.
The at least one pharmaceutically acceptable excipient, which is comprised in the pharmaceutical composition of the present invention, is preferably selected from the group consisting of fillers, disintegrants, wetting agents, lubricants, glidants, coating materials and any combinations thereof. In a preferred embodiment, the at least one pharmaceutically acceptable excipient comprises at least one filler and/or at least one disintegrant.
Preferably, the present invention relates to a pharmaceutical composition as describe above, wherein the predetermined and/or effective amount of crystalline lumateperone napadisylate of the present invention is selected from the group consisting of 9 mg, 20 mg, 40 mg and 60 mg calculated as lumateperone free base. Most preferably, the invention relates to a pharmaceutical composition as describe above, wherein the predetermined and/or effective amount of of crystalline lumateperone napadisylate of the present invention is 20 mg, 40 mg or 60 mg calculated as lumateperone free base.
Preferably, the present invention relates to a pharmaceutical composition as defined in any one of the above described embodiments, wherein the pharmaceutical composition is to be administered once-daily.
In a further aspect, the present invention relates to the pharmaceutical composition as defined in any one of the above described embodiments for use as a medicament.
Moreover, the present invention relates to the pharmaceutical composition as defined in any one of the above described embodiments for use in the treatment and/or prophylaxis of mental disorders.
The present invention also relates to the pharmaceutical composition as defined in any one of the above described embodiments for use in the treatment and/or prophylaxis of a condition selected from the group consisting of schizophrenia, bipolar depression, major despressive disorder, autism, behavioural disturbances associated with dementia including Morbus Alzheimer and sleep disturbances associated with neuro-psychiatric disorders. Most preferably, the invention relates to the pharmaceutical composition as defined in any one of the above described embodiments for use in the treatment and/or prophylaxis of schizophrenia.
In another embodiment, the present invention is directed to a method of treating or prophylactically preventing a condition selected from the group consisting schizophrenia, bipolar depression, major despressive disorder, autism, behavioural disturbances associated with dementia including Morbus Alzheimer and sleep disturbances associated with neuro psychiatric disorders. Preferably, the condition is schizophrenia.
EXAMPLES
The following non-limiting examples are illustrative for the disclosure and are not to be construed as to be in any way limiting for the scope of the invention.
Analytical Methods Powder X-ray diffraction was performed with a PANalytical X’Pert PRO diffractometer equipped with a theta/theta coupled goniometer in transmission geometry, Cu-Kalphai,2 radiation (wavelength 0.15419 nm) with a focusing mirror and a solid state PIXcel detector. Diffractograms were recorded at a tube voltage of 45 kV and a tube current of 40 mA, applying a stepsize of 0.013° 2-Theta with 40s per step (255 channels) in the angular range of 2° to 40° 2-Theta at ambient conditions. A typical precision of the 2 -Theta values is in the range of ± 0.2° 2-Theta, preferably of ± 0.1° 2-Theta.
FTIR spectrum was recorded (obtained) on a MKII Golden Gate™ Single Reflection Diamond ATR cell with a Bruker Tensor 27 FTIR spectrometer with 4 cm 1 resolution at a temperature in the range of from 20 to 30 °C. To record a spectrum a spatula tip of the sample was applied to the surface of the diamond in powder form. Then the sample was pressed onto the diamond with a sapphire anvil and the spectrum was recorded. A spectrum of the clean diamond was used as background spectrum. A typical precision of the wavenumber values is in the range of ± 4 cm 1 preferably of ± 2 cm
DSC was performed on a Mettler Polymer DSC R instrument. Lumateperone napadisylate (4.17 mg) and lumateperone hydrobromide (4.11 mg) were heated in 40 microliter aluminium pans with pierced aluminium lids from 25 to 250°C (lumateperone hydrobromide) and from 25 to 300°C (lumateperone napadisylate) at a rate of 10 K/min, respectively. Nitrogen (purge rate 50 mL/min) was used as purge gas.
TGA was performed on a Mettler TGA/DSC 1 instrument. Lumateperone napadisylate (6.56 mg) was heated in a 100 microliter aluminum pan closed with an aluminum lid. The lid was automatically pierced at the beginning of the measurement. The samples were heated from 25 to 260°C at a rate of 10 K/min. Nitrogen (purge rate 50 mL/min) was used as purge gas.
Example 1: Preparation of crystalline lumateperone napadisylate
A solution of lumateperone free base (1.32 g, 3.35 mmol, e.g. prepared according to Example 261 of US 2006/0148808 Al) in ethanol (20 mL) was heated to 65°C. To the warm solution, a solution of naphthal ene- 1 , 5 -di sulfoni c acid tetrahydrate (1.26 g, 3.50 mmol) in water (3 mL) was added. After the addition of a first amount of ethanol (25 mL) crystallization started. Another portion of ethanol (25 mL) was added and the suspension was further stirred at 65°C for half an hour. Thereafter, the suspension was cooled in 2 hours to 0°C and stirred for additional 2 hours. Finally, the crystals were collected by filtration, washed with ethanol (10 mL) and dried at 50 °C under vacuum (25 mbar) for 17 hour to obtain 1.72 g of crystalline lumateperone napadisylate.
Example 2: Solid-state characterization of crystalline lumateperone napadisylate
Powder X-ray diffraction
A representative diffractogram of crystalline lumateperone napadisylate is displayed in Figure 1 herein. The corresponding reflection list is provided in Table 1 below.
Figure imgf000017_0001
Table 1: PXRD reflections of crystalline lumateperone napadisylate in the range of from 2 to 30° 2- Theta; A typical precision of the 2-Theta values is in the range of ± 0.2° 2-Theta, preferably of ± 0.1° 2-Theta.
Fourier transform infrared spectroscopy
A representative FTIR spectrum of crystalline lumateperone napadisylate according to the present invention is displayed in Figure 2 and the corresponding peak list is provided in Table 2 below.
Figure imgf000017_0002
Table 2: FTIR peak list of crystalline lumateperone napadisylate according to the present invention; a typical precision of the wavenumbers is in the range of ± 4 cm 1, preferably of ± 2 cm 1.
Differential scanning calorimetry
The DSC curve of crystalline lumateperone napadisylate, which is also displayed in Figure 3 herein, shows an endothermic peak with an onset temperature of about 261°C and a peak maximum temperature of about 268°C. The endotherm is immediately followed by an exothermic peak, which indicates that the sample melts under decomposition.
The crystalline lumateperone napadisylate salt of the present invention is by far the most thermally stable salt form of lumateperone. An overview of the onset temperatures of the first thermal events (endotherm s) during DSC experiments of various crystalline lumateperone salts is provided in Table 3 below:
Figure imgf000018_0001
rate 10 K/min) during DSC measurements
Thermogravimetric analysis
Thermogravimetric examinations show a continuous small mass loss of about 0.9 w-% in the range of 25°C - 230°C, which is considered to be due to release of residual solvent and/or water. Comparative Example 1: Preparation and DSC experiment of crystalline lumateperone hydrobromide
Lumateperone free base (346 mg, 0.88 mmol, e.g. prepared according to Example 261 US 2006/0148808 Al) was dissolved in ethanol (4.1 mL) at RT before aqueous hydrobromic acid (assay 47%, 215 pL) was added. «-Heptane (1.5 mL) was added and the mixture was stirred for 3 hours at RT before the suspension was kept in the fridge at 2-8°C for another 17 hours. The obtained crystals were then collected by filtration and dried at RT under vacuum.
The so obtained lumateperone hydrobromide was analyzed by DSC. The DSC curve shows a first broad endothermic peak in the range of was 40-110°C with an onset temperature of about 54°C and a second endotherm in the range of from 155-190°C with an onset temperature of about 168°C.

Claims

1) Crystalline 4-((6bf?, 10a*S)-3 -methyl-2,3 ,6b, 9, 10, 1 Oa-hexahydro- 177-pyrido[3’ ,4’ :
4, 5]pyrrolo[ 1 ,2,3 -de]quinoxalin-8(7i )-yl)- 1 -(4-f uorophenyl)- 1 -butanone
naphthal ene- 1 , 5 -di sulfoni c acid addition salt (lumateperone napadisylate), characterized by the chemical structure according to Formula (II)
Figure imgf000020_0001
(P), wherein n is in the range of from 0.8 to 1.2.
2) Crystalline lumateperone napadisylate of claim 1, characterized by having a powder X- ray diffractogram comprising reflections at 2-Theta angles of (6.5 ± 0.2)°, (7.8 ± 0.2)° and (19.0 ± 0.2)°, when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
3) Crystalline lumateperone napadisylate of claim 2 characterized by having a powder X- ray diffractogram comprising additional reflections at 2-Theta angles of (11.3 ± 0.2)° and (17.6 ± 0.2)°, when measured at a temperature in the range of from 20 to 30°C with Cu-Kalphai,2 radiation having a wavelength of 0.15419 nm.
4) Crystalline lumateperone napadisylate as defined in any one of the preceding claims characterized by having an FTIR spectrum comprising peaks at wavenumbers of (3007 ± 2) cm 1, (1676 ± 2) cm 1 and (1023 ± 2) cm 1, when measured at a temperature in the range of from 20 to 30 °C with a diamond ATR cell.
5) Crystalline lumateperone napadisylate of claim 4 characterized by having an FTIR spectrum comprising additional peaks at wavenumbers of (1229 ± 4) cm 1 and (1158 ± 4) cm 1, when measured at a temperature in the range of from 20 to 30 °C with a diamond ATR cell. 6) Crystalline lumateperone napadisylate as defined in any one of the preceding claims, characterized by having a DSC curve comprising an endothermic peak having an onset at a temperature of (261 ± 5)°C, when measured at a heating rate of 10 K/min.
7) Use of the crystalline lumateperone napadisylate as defined in any one of the preceding claims for the preparation of a pharmaceutical composition.
8) A pharmaceutical composition comprising the crystalline lumateperone napadisylate as defined in any one of claims 1 to 7 and at least one pharmaceutically acceptable excipient.
9) The pharmaceutical composition of claim 8, wherein the pharmaceutical composition is an oral solid dosage form.
10) The pharmaceutical composition of claim 9, wherein the oral solid dosage form is a capsule.
11) The pharmaceutical composition of claim 10, wherein the capsule is a hard gelatin capsule.
12) The pharmaceutical composition as defined in any one of claims 9 to 11, comprising 20 mg, 40 mg or 60 mg of the crystalline lumateperone napadisylate as defined in any one of claims 1 to 8, calculated as lumateperone free base.
13) The pharmaceutical composition as defined in any one of claims 9 to 12 for use in the treatment and/or prophylaxis of mental disorders.
14) The pharmaceutical composition as defined in any one of claims 9 to 12 for use in the treatment and/or prophylaxis of a condition selected from the group consisting of schizophrenia, bipolar depression, major despressive disorder, autism, behavioural disturbances associated with dementia including Morbus Alzheimer and sleep disturbances associated with neuro-psychiatric disorders.
15) A process for the preparation of the crystalline lumateperone napadisylate as defined in any one of claims 1 to 6 comprising:
(a) dissolving lumateperone free base in a suitable solvent;
(b) adding naphthalene- 1 , 5 -di sulfonic acid to the solution obtained in (a);
(c) adding one or more antisolvent(s) to the reaction mixture obtained in (b);
(d) separating at least a part of the crystals obtained in step (c);
(e) optionally washing the isolated crystals of step (d); and
(f) drying the crystals obtained in step (d) or (e).
PCT/EP2020/056785 2019-03-13 2020-03-13 Crystalline salt of a 5-ht2a receptor antagonist WO2020182978A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19162597 2019-03-13
EP19162597.9 2019-03-13

Publications (1)

Publication Number Publication Date
WO2020182978A1 true WO2020182978A1 (en) 2020-09-17

Family

ID=65812070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/056785 WO2020182978A1 (en) 2019-03-13 2020-03-13 Crystalline salt of a 5-ht2a receptor antagonist

Country Status (1)

Country Link
WO (1) WO2020182978A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113024554A (en) * 2021-03-24 2021-06-25 上海法默生物科技有限公司 Preparation method of rumepilone intermediate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060148808A1 (en) 1999-06-15 2006-07-06 Robichaud Albert J Substituted heterocycle fused gamma-carbolines
WO2009114181A2 (en) 2008-03-12 2009-09-17 Intra-Cellular Therapies, Inc. Substituted heterocycle fused gamma-carbolines solid
WO2017172784A1 (en) 2016-03-28 2017-10-05 Intra-Cellular Therapies, Inc. Novel salts and crystals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060148808A1 (en) 1999-06-15 2006-07-06 Robichaud Albert J Substituted heterocycle fused gamma-carbolines
WO2009114181A2 (en) 2008-03-12 2009-09-17 Intra-Cellular Therapies, Inc. Substituted heterocycle fused gamma-carbolines solid
WO2017172784A1 (en) 2016-03-28 2017-10-05 Intra-Cellular Therapies, Inc. Novel salts and crystals

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
STAHL P.H. ET AL.: "Handbook of Pharmaceutical Salts", 2008, IUPAC
VITALIJ K. PECHARSKYPETER Y. ZAVALIJ: "Fundamentals of Powder Diffraction and Structural Characterization of Materials", 2003, KLUWER ACADEMIC PUBLISHERS, pages: 3

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113024554A (en) * 2021-03-24 2021-06-25 上海法默生物科技有限公司 Preparation method of rumepilone intermediate
CN113024554B (en) * 2021-03-24 2023-03-14 上海法默生物科技有限公司 Preparation method of rumepilone intermediate

Similar Documents

Publication Publication Date Title
EP2707368B1 (en) Polymorph of linagliptin benzoate
EP3666776A1 (en) Hydrate of a gonadotropin-releasing hormone receptor antagonist
WO2020115212A1 (en) Crystalline phosphate salt of selective jak1 inhibitor upadacitinib
US20220267334A1 (en) Crystalline forms of an orally available, selective kit and pdgfr kinase inhibitor
WO2020115213A1 (en) Solvate of a selective jak1 inhibitor
EP3239138A1 (en) Hydrogen fumarate salt of 1-[3-[3-(4-chlorophenyl)propoxy]propyl]piperidine
WO2020182978A1 (en) Crystalline salt of a 5-ht2a receptor antagonist
EP3283483B1 (en) Crystalline eliglustat hydrochloride
WO2017036884A1 (en) A lesinurad, free form / lesinurad ethyl ester co-crystal
JP2024522603A (en) Novel solid form of (3R)-N-[2-cyano-4-fluoro-3-(3-methyl-4-oxo-quinazolin-6-yl)oxy-phenyl]-3-fluoro-pyrrolidine-1-sulfonamide
WO2021259732A1 (en) Multi-component compounds comprising zanubrutinib and a benzoic acid derivative
EP3887356B1 (en) Multi-component crystals of an orally available hif prolyl hydroxylase inhibitor
EP4126237B1 (en) Dimaleate form of 1-((2r,4r)-2-(1h-benzo[d]imidazol-2-yl)-1-methylpiperidin-4-yl)-3-(4-cyanophenyl)urea
EP3587421A1 (en) Crystalline forms of (s)-4-(8-amino-3-(1-(but-2-ynoyl)pyrrolidin-2-yl)imidazo[1,5-alpha]pyrazin-1-yl-n-(pyridin-2-yl)benzamide
EP3181565A1 (en) Crystalline omarigliptin salts
CA3080657A1 (en) Crystalline salt of a tricyclic poly(adp-ribose) polymerase inhibitor
WO2020187674A1 (en) Crystalline (s)-[3,4-difluoro-2-(2-fluoro-4-iodophenylamino)phenyl][3-hydroxy-3-(piperidin-2-yl)azetidin-1-yl]methanone hemisuccinate
EP4378942A1 (en) Crystal form of a pde3/4 inhibitor
WO2023285696A1 (en) Mandelate form of 1-(4-(((6-amino-5-(4-phenoxyphenyl)pyrimidin-4-yl)amino)methyl)piperidin-1-yl)prop-2-en-1-one
WO2020161284A1 (en) Crystalline form of iclaprim mesylate
US20230286998A1 (en) Succinate salts of octahydrothienoquinoline compound and crystals thereof
WO2022263263A1 (en) Crystalline form of avacopan
WO2022013052A1 (en) Compounds comprising voxelotor and 2,5-dihydroxybenzoic acid and crystal forms
WO2022162107A1 (en) Crystalline form of risdiplam
EP3372599A1 (en) Crystalline form of verubecestat

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20710935

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20710935

Country of ref document: EP

Kind code of ref document: A1