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  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
  • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
  • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
  • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
  • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
  • A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
  • A61K31/351—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom not condensed with another ring
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
  • A61P1/18—Drugs for disorders of the alimentary tract or the digestive system for pancreatic disorders, e.g. pancreatic enzymes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P19/00—Drugs for skeletal disorders
  • A61P19/06—Antigout agents, e.g. antihyperuricemic or uricosuric agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P3/00—Drugs for disorders of the metabolism
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P3/00—Drugs for disorders of the metabolism
  • A61P3/04—Anorexiants; Antiobesity agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P3/00—Drugs for disorders of the metabolism
  • A61P3/06—Antihyperlipidemics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P3/00—Drugs for disorders of the metabolism
  • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
  • A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P7/00—Drugs for disorders of the blood or the extracellular fluid
  • A61P7/10—Antioedematous agents; Diuretics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/04—Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/12—Antihypertensives
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D407/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
  • C07D407/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings
  • C07D407/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
  • C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals

Definitions

• the invention relates to a crystalline form of 1-chloro-4-( ⁇ -D-glucopyranos-1-yl)-2- [4-((S,)-tetrahydrofuran-3-yloxy)-benzyl]-benzene, to a method for the preparation thereof, as well as to the use thereof for preparing medicaments.
• the compounds described therein have a valuable inhibitory effect on the sodium-dependent glucose cotransporter SGLT, particularly SGLT2.
• the method of manufacture of the compound A as described therein does not yield a crystalline form.
• a certain phamaceutical activity is of course the basic prerequisite to be fulfilled by a pharmaceutically active agent before same is approved as a medicament on the market.
• a pharmaceutically active agent has to comply with. These requirements are based on various parameters which are connected with the nature of the active substance itself. Without being restrictive, examples of these parameters are the stability of the active agent under various environmental conditions, its stability during production of the pharmaceutical formulation and the stability of the active agent in the final medicament compositions.
• the pharmaceutically active substance used for preparing the pharmaceutical compositions should be as pure as possible and its stability in long-term storage must be guaranteed under various environmental conditions. This is essential to prevent the use of pharmaceutical compositions which contain, in addition to the actual active substance, breakdown products thereof, for example. In such cases the content of active substance in the medicament might be less than that specified.
• Uniform distribution of the medicament in the formulation is a critical factor, particularly when the medicament has to be given in low doses.
• the particle size of the active substance can be reduced to a suitable level, e.g. by grinding. Since breakdown of the pharmaceutically active substance as a side effect of the grinding (or micronising) has to be avoided as far as possible, in spite of the hard conditions required during the process, it is essential that the active substance should be highly stable throughout the grinding process. Only if the active substance is sufficiently stable during the grinding process it is possible to produce a homogeneous pharmaceutical formulation which always contains the specified amount of active substance in a reproducible manner.
• Another problem which may arise in the grinding process for preparing the desired pharmaceutical formulation is the input of energy caused by this process and the stress on the surface of the crystals. This may in certain circumstances lead to polymorphous changes, to amorphization or to a change in the crystal lattice. Since the pharmaceutical quality of a pharmaceutical formulation requires that the active substance should always have the same crystalline morphology, the stability and properties of the crystalline active substance are subject to stringent requirements from this point of view as well.
• the stability of a pharmaceutically active substance is also important in pharmaceutical compositions for determining the shelf life of the particular medicament; the shelf life is the length of time during which the medicament can be administered without any risk. High stability of a medicament in the abovementioned pharmaceutical compositions under various storage conditions is therefore an additional advantage for both the patient and the manufacturer.
• compositions with a tendency to absorb moisture have to be protected from moisture during storage, e.g. by the addition of suitable drying agents or by storing the drug in an environment where it is protected from moisture.
• a pharmaceutically active substance should be only slightly hygroscopic.
• the aim of the invention is thus to provide a stable crystalline form of the compound A which meets important requirements imposed on pharmaceutically active substances as mentioned above.
• the present invention relates to a crystalline form of the compound A.
• the present invention relates to the crystalline form of the compound A having an X-ray powder diffraction pattern that comprises peaks at 18.84, 20.36 and 25.21 degrees 2 ⁇ ( ⁇ 0.05 degrees 2 ⁇ ), wherein said X-ray powder diffraction pattern is made using CuK ⁇ i radiation.
• the present invention relates to the compound A wherein at least 50% of said substance is present in the form of a crystalline form as defined hereinbefore and hereinafter.
• a fourth aspect of the present invention relates to a pharmaceutical composition or medicament comprising a crystalline form as defined hereinbefore and hereinafter.
• the present invention relates to a use of a crystalline form as defined hereinbefore or hereinafter for preparing a pharmaceutical composition which is suitable for the treatment or prevention of diseases or conditions which can be influenced by inhibiting sodium-dependent glucose cotransporter SGLT, preferably SGLT2.
• the present invention relates to a use of a crystalline form as defined hereinbefore or hereinafter for preparing a pharmaceutical composition which is suitable for the treatment or prevention of metabolic disorders.
• the present invention relates to a use of a crystalline form as defined hereinbefore or hereinafter for preparing a pharmaceutical composition for inhibiting the sodium-dependent glucose cotransporter SGLT2.
• the present invention relates to a use of a crystalline form as defined hereinbefore or hereinafter for preparing a pharmaceutical composition for preventing the degeneration of pancreatic beta cells and/or for improving and/or restoring the functionality of pancreatic beta cells.
• the present invention relates to a use of a crystalline form as defined hereinbefore and hereinafter for preparing a pharmaceutical composition for preventing, slowing, delaying or treating diseases or conditions attributed to an abnormal accumulation of liver fat in a patient in need thereof.
• the present invention relates to a method for making the crystalline form as defined hereinbefore and hereinafter, said method comprising the following steps:
• the Figure 1 shows an X-ray powder diffractogram of the crystalline form.
• the Figure 2 shows the thermoanalysis and determination of the melting point via
• the present invention relates to a crystalline form of the compound A.
• This crystalline form may be identified by means of their characteristic X-ray powder diffraction (XRPD) patterns.
• XRPD characteristic X-ray powder diffraction
• the crystalline form is characterised by an X-ray powder diffraction pattern that comprises peaks at 18.84, 20.36 and 25.21 degrees 2 ⁇ ( ⁇ 0.05 degrees 2 ⁇ ), wherein said X-ray powder diffraction pattern is made using CuK ⁇ i radiation.
• said X-ray powder diffraction pattern comprises peaks at 14.69, 18.84, 19.16, 19.50, 20.36 and 25.21 degrees 2 ⁇ ( ⁇ 0.05 degrees 2 ⁇ ), wherein said X-ray powder diffraction pattern is made using CuK ⁇ i radiation.
• the crystalline form is characterised by an X-ray powder diffraction pattern, made using CuK ⁇ i radiation, which comprises peaks at degrees 2 ⁇ ( ⁇ 0.05 degrees 2 ⁇ ) as contained in Table 1.
• Table 1 X-ray powder diffraction pattern of the crystalline form (only peaks up to 30° in 2 ⁇ are listed):
• the crystalline form is characterised by an X-ray powder diffraction pattern, made using CuK ⁇ i radiation, which comprises peaks at degrees 2 ⁇ ( ⁇ 0.05 degrees 2 ⁇ ) as shown in Figure 1. Furthermore the crystalline form of compound A is characterised by a melting point of about 149 0 C ⁇ 3 0 C (determined via DSC; evaluated as onset-temperature; heating rate 10 K/min). The obtained DSC curve is shown in Figure 2.
• OED location-sensitive detector
• G ⁇ node X-ray source
• the above described 2 ⁇ values should be considered accurate to ⁇ 0.05 degrees 2 ⁇ . That is to say, when assessing whether a given sample of crystals of the compound A is the crystalline form in accordance with the invention, a 2 ⁇ value which is experimentally observed for the sample should be considered identical with a characteristic value described above if it falls within ⁇ 0.05 degrees 2 ⁇ of the characteristic value.
• the melting point is determined by DSC (Differential Scanning Calorimetry) using a DSC 821 (Mettler Toledo).
• a further aspect of the present invention relates to a method for making the crystalline form of the compound A as defined hereinbefore and hereinafter, said method comprising the following steps:
• step (c) removing the precipitate from the solution; and (d) drying the precipitate until any excess of said solvent or mixture of solvents has been removed.
• saturated or “nearly saturated” are related to the starting material of the compound A as used in step (a). For example a solution which is saturated with respect to the starting material of the compound A may be supersaturated with respect to its crystalline form.
• Suitable solvents are preferably selected from the group consisting of water, ethylacetate, acetonitrile, acetone, diethylether and mixture of two or more of these solvents.
• More preferred solvents are selected from the group consisting of methanol, ethanol, isopropanol, ethyl acetate, diethylether, acetone, water and mixture of two or more of these solvents, in particular mixtures of one or more of said organic solvents with water.
• Particularly preferred solvents are selected from the group consisting of ethylacetate, ethanol, isopropanol and mixtures of ethanol and/or isopropanol with water.
• a preferred volume ratio of water : the alkanol is in the range from about 1 : 4 to 4 : 1 ; more preferably from about 1 : 2 to 2 : 1 ; even more preferably from about 2 : 3 to 3 : 2.
• the step (a) is carried at about room temperature (about 2O 0 C) or at an elevated temperature up to about the boiling point of the solvent or mixture of solvents used.
• step (a) and/or in step (b) one or more antisolvents or non-solvents may be added, preferably during step (a) or at the beginning of step (b).
• Water is an example of a suitable antisolvent or non-solvent.
• the amount of antisolvent or non-solvent or of a mixture thereof is preferably chosen to obtain a supersaturated or nearly supersaturated solution.
• step (b) the solution is stored for a time sufficient to obtain a precipitate.
• the temperature of the solution in step (b) is about the same as or lower than in step (a).
• the temperature of the solution containing the compound A is preferably lowered, preferably to a temperature in the range of 2O 0 C to O 0 C or even lower.
• the step (b) can be carried out with or without stirring.
• the size, shape and quality of the obtained crystals can be varied.
• the crystallization may be induced by methods as known in the art, for example by scratching or rubbing.
• the (nearly) saturated solution may be inoculated with seed crystals.
• step (c) the solvent(s) can be removed from the precipitate by known methods as for example filtration, suction filtration, decantation or centrifugation.
• step (d) an excess of the solvent(s) is removed from the precipitate by methods known to the one skilled in the art as for example by reducing the partial pressure of the solvent(s), preferably in vacuum, and/or by heating above ca. 2O 0 C, preferably in a temperature range below 8O 0 C, even more preferably below 5O 0 C.
• the compound A may be synthesized by methods as specifically and/or generally described or cited in the international application WO 2005/092877. Furthermore the biological properties of the compound A may be investigated as it is described in the international application WO 2005/092877 which in its enterity is incorporated herein by reference.
• the crystalline form in accordance with the invention is preferably employed as drug active substance in substantially pure form, that is to say, essentially free of other crystalline forms of the compound A. Nevertheless, the invention also embraces the crystalline form as herein defined in admixture with another crystalline form or forms. Should the drug active substance be a mixture of crystalline forms, it is preferred that the substance comprises at least 50% of the crystalline form as described herein.
• the crystalline form according to the invention is suitable for the preparation of pharmaceutical compositions for the treatment and/or preventative treatment of all those conditions or diseases which may be affected by the inhibition of the SGLT activity, particularly the SGLT-2 activity.
• the crystalline form is particularly suitable for the preparation of pharmaceutical compositions for prevention or treatment of diseases, particularly metabolic disorders, or conditions such as type 1 and type 2 diabetes mellitus, complications of diabetes (such as e.g. retinopathy, nephropathy or neuropathies, diabetic foot, ulcers, macroangiopathies), metabolic acidosis or ketosis, reactive hypoglycaemia, hyperinsulinaemia, glucose metabolic disorder, insulin resistance, metabolic syndrome, dyslipidaemias of different origins, atherosclerosis and related diseases, obesity, high blood pressure, chronic heart failure, oedema and hyperuricaemia.
• the crystalline form is also suitable for the preparation of pharmaceutical compositions for preventing beta-cell degeneration such as e.g.
• the crystalline form is also suitable for the preparation of pharmaceutical compositions for improving or restoring the functionality of pancreatic cells, and also of increasing the number and size of pancreatic beta cells.
• the crystalline form according to the invention may also be used for the preparation of pharmaceutical compositions usefull as diuretics or antihypertensives and suitable for the prevention and treatment of acute renal failure.
• an abnormal accumulation of fat in the liver may be reduced or inhibited. Therefore according to another aspect of the present invention there is provided a method for preventing, slowing, delaying or treating diseases or conditions attributed to an abnormal accumulation of liver fat in a patient in need thereof characterized in that a pharmaceutical composition according to the present invention is administered.
• Diseases or conditions which are attributed to an abnormal accumulation of liver fat are particularly selected from the group consisting of general fatty liver, nonalcoholic fatty liver (NAFL), non-alcoholic steatohepatitis (NASH), hyperalimentation- induced fatty liver, diabetic fatty liver, alcoholic-induced fatty liver or toxic fatty liver.
• the crystalline form according to the invention is suitable for the preparation of pharmaceutical compositions for the prevention or treatment of diabetes, particularly type 1 and type 2 diabetes mellitus, and/or diabetic complications.
• the crystalline form according to the invention is particularly suitable for the prevention or treatment of overweight, obesity (including class I, class Il and/or class III obesity), visceral obesity and/or abdominal obesity.
• the dosage required to achieve the corresponding activity for treatment or prevention usually depends on the patient, the nature and gravity of the illness or condition and the method and frequency of administration and is for the patient's doctor to decide.
• the dosage may be from 1 to 100 mg, preferably 1 to 30 mg, by intravenous route, and 1 to 1000 mg, preferably 1 to 100 mg, by oral route, in each case administered 1 to 4 times a day.
• the pharmaceutical compositions according to this invention preferably comprise the crystalline form together with one or more inert conventional carriers and/or diluents.
• Such pharmaceutical compositions may be formulated as conventional galenic preparations such as plain or coated tablets, capsules, powders, suspensions or suppositories.
• a solution of 86.2 g (5-bromo-2-chloro-phenyl)-(4-methoxy-phenyl)-methanone and 101.5 ml triethylsilane in 75 ml dichloromethane and 150 ml acetonitrile is cooled to 1O 0 C. Then with stirring 50.8 ml of boron trifluoride etherate are added so that the temperature does not exceed 2O 0 C. The solution is stirred for 14 h at ambient temperature, before another 9 ml triethylsilane and 4.4 ml boron trifluoride etherate are added. The solution is stirred for a further 3 h at 45 to 5O 0 C and then cooled to ambient temperature.
• a solution of 20 g D-glucono-1 ,5-lactone and 98.5 ml ⁇ /-methylmorpholine in 200 ml of tetrahydrofuran is cooled to -5 0 C. Then 85 ml trimethylsilylchloride are added dropwise so that the temperature does not exceed 5 0 C. The solution is then stirred for 1 h at ambient temperature, 5 h at 35 0 C and again for 14 h at ambient temperature. After the addition of 300 ml of toluene the solution is cooled in an ice bath, and 500 ml of water are added so that the temperature does not exceed 10 0 C.
• the organic phases are dried over sodium sulphate and evaporated down.
• the residue is dissolved in 30 ml acetonitrile and 30 ml dichloromethane and the solution is cooled to -10 0 C.
• 4.4 ml triethylsilane 2.6 ml boron trifluoride etherate are added dropwise so that the temperature does not exceed -5 0 C.
• the solution is stirred for another 5 h at -5 to -10 0 C and then quenched by the addition of aqueous sodium hydrogen carbonate solution.
• the organic phase is separated, and the aqueous phase is extracted four times with ethyl acetate.
• 0.19 g (f?)-3-(4-methylphenylsulfonyloxy)-tetrahydrofuran are added to a mixture of 0.20 g 1-chloro-4-( ⁇ -D-glucopyranos-1-yl)-2-(4-hydroxybenzyl)-benzene and 0.29 g cesium carbonate in 2.5 ml dimethylformamide.
• the mixture is stirred at 75 0 C for 4 h, before another 0.29 g caesium carbonate and 0.19 g (f?)-3-(4-methylphenyl- sulfonyloxy)-tetrahydrofuran are added. After an additional 14 h stirring at 75 0 C the mixture is cooled to ambient temperature and brine is added.

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