WO2014164658A1 - Methods of inhibiting leukotriene a4 hydrolase - Google Patents

Methods of inhibiting leukotriene a4 hydrolase Download PDF

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Publication number
WO2014164658A1
WO2014164658A1 PCT/US2014/023138 US2014023138W WO2014164658A1 WO 2014164658 A1 WO2014164658 A1 WO 2014164658A1 US 2014023138 W US2014023138 W US 2014023138W WO 2014164658 A1 WO2014164658 A1 WO 2014164658A1
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Prior art keywords
pharmaceutical composition
compound
condition
administered
dose
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PCT/US2014/023138
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French (fr)
Inventor
Eric B. SPRINGMAN
Margaret McCrann PUGH
Lopa Bhatt
Ralph GROSSWALD
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Celtaxsys Inc
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Celtaxsys Inc
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Priority to JP2016501158A priority Critical patent/JP6527851B2/en
Priority to CA2905340A priority patent/CA2905340C/en
Priority to AU2014249168A priority patent/AU2014249168B2/en
Priority to ES14779776T priority patent/ES2864862T3/en
Priority to EP14779776.5A priority patent/EP2968359B1/en
Priority to RU2015137978A priority patent/RU2686101C2/en
Application filed by Celtaxsys Inc filed Critical Celtaxsys Inc
Publication of WO2014164658A1 publication Critical patent/WO2014164658A1/en
Priority to US14/850,061 priority patent/US9820974B2/en
Anticipated expiration legal-status Critical
Priority to US15/801,482 priority patent/US10350197B2/en
Priority to US16/443,338 priority patent/US10898471B2/en
Ceased legal-status Critical Current

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Definitions

  • LTA4-I1 is a monomeric, soluble 69 kD zinc metalloenzyme. It catalyses two reactions: the stereospecific epoxide hydrolase reaction to convert LTA4 to leukotriene B4 (LTB 4 ) and a peptidase cleavage of chromogenic substrates. Leukotriene B 4 (LTB 4 ) is a major pro-inflammatory mediator. LTA4-I1 and receptors to LTB4 are known to be elevated in a number of human lung diseases including cystic fibrosis, asthma and chronic obstructive pulmonary disease (COPD). Additionally, elevated levels of LTA4-H have been located at active demyelinating lesions in the brains of patients with multiple sclerosis (MS).
  • MS multiple sclerosis
  • LTA4-I1 inhibitors have been described, for example, in U.S. Patent No. 7,737, 145 and U.S. Patent Application Publication No. 20100210630A1, the contents of each of which are incorporated by reference herein.
  • a specific LTA4-I1 inhibitor described in these patent publications is 4- ⁇ [(l S,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid. In preclinical studies, this compound was shown to reduce the progression of chronic inflammation in several animal models.
  • the present invention is directed to methods of inhibiting LTA4-I1 in a human patient and methods of treating a condition ameliorated by the inhibition of leukotriene A4 hydrolase activity in a human patient comprising administering to said human patient the compound, wherein the compound is 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid, at a dose of about 100 mg or less, and wherein the compound is administered orally.
  • the compound is administered at a dose between about 1 mg and about 100 mg, a dose between about 1 mg and about 75 mg, a dose between about 1 mg and about 50 mg, a dose between about 1 mg and about 30 mg, or a dose between about 5 mg and about 25 mg. In some embodiments, the compound is administered at a dose between about 5 mg and about 15 mg. In certain aspects, the compound is administered at a dose of about 5 mg.
  • the invention also encompasses a pharmaceutical composition
  • a pharmaceutical composition comprising the compound, 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid, wherein the amount of the compound present in the composition is about 100 mg or less, and wherein the composition is an oral dosage form.
  • the amount of the compound is between about 1 mg and about 100 mg, between about 1 mg and about 75 mg, between about 1 mg and about 50 mg, between about 1 mg and about 30 mg, or between about 5 mg and about 25 mg.
  • the compound is present in the composition in an amount between about 5 mg and about 15 mg.
  • the compound is present in the composition in an amount of about 5 mg.
  • FIG. 1 shows a plot of plasma concentration (ng/ml) over time (hours) of 50 mg, 15 mg and 5 mg of 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid.
  • the two sets of dashed, horizontal lines indicate the plasma concentration that is three-times (3x) the IC5 0 and the plasma
  • FIG. 2 shows the x-ray powder diffraction pattern of 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2- yl-phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid.
  • an additional therapeutic agent encompasses both a single additional therapeutic agent and a combination of two or more additional therapeutic agents.
  • range of the dose or amount of the compound is described as “between” a low end of the range and “between” a high end of the range, the range is meant to include both, the low end and the high end as well as doses in between the low and high ends.
  • a dose between about 1 mg and about 100 mg it is to be understood that the range includes the low end of the range, 1 mg, and the high end of the range, 100 mg, as well as the doses in between.
  • the present invention is based on the discovery that a low dose oral formulation of 4- ⁇ [(l S,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl ⁇ benzoic acid is therapeutically effective.
  • Preclinical research conducted in mouse, rat, and dog models projected an effective oral dose of the compound for humans of at least 100 to 200 mg.
  • pharmacokinetic studies (the results of which are described in more detail below) have demonstrated that an oral formulation containing less than 100 mg is effective. These studies have shown that a dose as low as 5 mg can achieve therapeutic levels of the compound in the blood.
  • the invention is directed to the administration of an effective oral dose of 4- ⁇ [(l S,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl ⁇ benzoic acid.
  • This compound and methods for the preparation thereof have been described in detail in U.S. Patent No. 7,737, 145 and U.S. Patent Application Publication No.
  • the methods of the invention relate to inhibiting LTA 4 hydrolase activity in human patients, and thus are useful in treating conditions which are ameliorated by the inhibition of LTA 4 hydrolase activity.
  • diseases and conditions include inflammatory conditions and autoimmune diseases.
  • Exemplary inflammatory conditions are pulmonary and respiratory tract inflammation.
  • the condition that is treated is a chronic condition.
  • chronic conditions are cystic fibrosis, idiopathic pulmonary fibrosis, multiple sclerosis, inflammatory bowel disease, and interstitial lung disease associated with systemic sclerosis (scleroderma).
  • the condition that is treated is an acute condition.
  • acute conditions are allergic rhinitis and myocardial infarction.
  • the invention can also be used in the treatment of mild, non-life threatening conditions such as acne and gingivitis.
  • the human patient is a pediatric patient.
  • a pediatric patient can, for example, be a patient less than 16 years of age, less than 12 years of age, less than 10 years of age, less than 8 years of age, less than 6 years of age, less than 5 years of age, less than 2 years of age, or an infant.
  • the pediatric patient is suffering from cancer.
  • the pediatric patient is suffering from a respiratory or pulmonary inflammation.
  • Conditions that can be ameliorated by LTA 4 -h inhibition and that can be treated according to the methods of the invention include, for example, acute or chronic
  • Atherosclerosis aneurysm, critical leg ischemia, peripheral arterial occlusive disease and Reynaud's syndrome
  • complications of diabetes including diabetic nephropathy, neuropathy and retinopathy
  • ocular disorders including macular degeneration and glaucoma
  • neurodegenerative disorders including delayed neurodegeneration in stroke, Alzheimer's disease, Parkinson's disease, encephalitis and HIV dementia
  • inflammatory and neuropathic pain including arthritic pain, periodontal disease including gingivitis, ear infections, migraine, benign prostatic hyperplasia, and cancers (including, but not limited to, leukemias and lymphomas, prostate cancer, breast cancer, lung cancer, malignant melanoma, renal carcinoma, head and neck tumors and colorectal cancer).
  • the methods of the invention also encompass treating folliculitis induced by inhibitors of epidermal growth factor (EGF) or epidermal growth factor receptor (EGFR) kinase used in the treatment of solid tumors.
  • EGF epidermal growth factor
  • EGFR epidermal growth factor receptor
  • the methods described herein can be used to inhibit neutrophil or eosinophil-mediated inflammation, and therefore encompass the treatment of folliculitis, thereby improving the quality of life of the treated cancer patients but also allowing for the increase of the dosage of the EGF inhibitor or EGFR kinase inhibitor or the extension of the duration of the treatment, resulting in improved efficacy of the desired inhibitor.
  • the methods also encompass the treatment of pulmonary and respiratory
  • inflammation disorders in humans including, but not limited to, asthma, chronic bronchitis, bronchiolitis, bronchiolitis obliterans (including such with organizing pneumonia), allergic inflammation of the respiratory tract (including rhinitis and sinusitis), eosinophilic granuloma, pneumonias, pulmonary fibroses, pulmonary manifestations of connective tissue diseases, acute or chronic lung injury, chronic obstructive pulmonary disease (COPD), adult respiratory distress syndrome (ARDS), and non- infectious inflammatory disorders of the lung characterized by eosinophil infiltration.
  • the inflammation is eosinophil- mediated inflammation of the lung or tissues; neutrophil-mediated inflammation of the lung; lymphocyte-mediated inflammation of the lung; airway hyper-responsiveness; and airway and vascular inflammation.
  • the methods also encompass the treatment of myocardial infarction or susceptibility to myocardial infarction in humans, transient ischemic attack, transient monocular blindness, stroke or susceptibility of stroke, claudication, peripheral arterial occlusive disease or susceptibility to peripheral arterial occlusive disease, and acute coronary syndrome (such as unstable angina, non-ST-elevation myocardial infarction or ST-elevation myocardial infarction).
  • the methods also encompass methods for reducing the risk of myocardial infarction, stroke or peripheral arterial occlusive disease in mammals and reducing the risk of a second myocardial infarction or stroke.
  • Atherosclerosis in humans who require treatment (such as angioplasty, stents, coronary artery bypass graft) in order to restore blood flow in the arteries (such as in the coronary arteries).
  • treatment such as angioplasty, stents, coronary artery bypass graft
  • Non-limiting examples of neurodegenerative diseases that can be treated according to a method of the invention are amyotrophic lateral sclerosis (ALS), Parkinson's disease and Huntington's disease.
  • ALS amyotrophic lateral sclerosis
  • Parkinson's disease Huntington's disease.
  • the methods also encompass the treatment of cancer.
  • the cancer is leukemia.
  • Specific exemplary leukemias that can be treated by administering a compound of the invention are Chronic Granulocytic Leukemias, Chronic B-Cell Leukemias and Chronic Myelogenous Leukemias.
  • the invention also encompasses a method of treating a solid tumor in a subject in need thereof.
  • Non-limiting examples of solid tumors that can be treated according to the methods described herein are ovarian, esophageal and hepatocellular tumors.
  • the invention is directed to a method of treating a condition selected from the group consisting of cystic fibrosis, idiopathic pulmonary fibrosis, interstitial lung disease associated with systemic sclerosis, atherosclerosis, osteoarthritis, Alzheimer's disease, osteoporosis, and type II diabetes, allergic rhinitis, acne, and gingivitis.
  • a condition selected from the group consisting of cystic fibrosis, idiopathic pulmonary fibrosis, interstitial lung disease associated with systemic sclerosis, atherosclerosis, osteoarthritis, Alzheimer's disease, osteoporosis, and type II diabetes, allergic rhinitis, acne, and gingivitis.
  • eosinophilic disorders are eosinophilic esophagitis, eosinophilic gastroenteritis, eosinophilic colitis, eosinophilic fasciitis, eosinophilic pneumonia, eosinophilic cystitis, hypereosinophilic syndrome and Churg Strauss Syndrome.
  • the eosinophilic disorder is eosinophilic esophagitis.
  • the invention encompasses methods wherein 4- ⁇ 5-[4-(4-Oxazol-2-yl-phenoxy)- benzyl]-2,5-diaza-bicyclo[2.2.1]hept-2-ylmethyl ⁇ -benzoic acid is co-administered with at least one additional therapeutic agent.
  • the condition is cancer and 4- ⁇ 5-[4-(4-Oxazol-2-yl-phenoxy)-benzyl]-2,5-diaza-bicyclo[2.2. l]hept-2- ylmethyl ⁇ -benzoic acid is administered with a chemotherapeutic agent.
  • the human patient is suffering from chronic obstructive pulmonary disease (COPD) and the additional therapeutic agent is a drug used in the treatment of COPD, such as a
  • the condition is COPD and the at least one additional therapeutic agent is selected from the group consisting of a beta-agonist, an anticholinergic, a glucocorticoid, or a combination thereof.
  • the human patient is suffering from cystic fibrosis and the additional therapeutic agent is a drug used in the treatment of cystic fibrosis, for example, an antibiotic, a mucolytic, a surfactant, a pancreatic enzyme replacement drug, or a combination thereof.
  • the condition is interstitial lung disease (ILD), a frequent complication of systemic sclerosis
  • the additional therapeutic agent is a therapeutic agent used in the treatment of interstitial lung disease including, for example, glucocorticoids, cyclophosphamide, azathioprine, methotrexate, and mycophenolate mofetil.
  • the condition is multiple sclerosis and the additional therapeutic agent is a therapeutic agent used in the treatment of multiple sclerosis including, for example, teriflunomide (sold under the tradename AUBAGIO®), interferon-beta-la (sold under the tradenames AVONEX® and REBIF®), interferon-beta-lb (sold under the tradenames BETASERON® and EXTAVIA®), glatiramer acetate (sold under the tradename
  • COPAXONE® COPAXONE®
  • fingolimod sold under the tradename GILENYA®
  • mitoxantrone sold under the tradename (NOVANTRONE®)
  • natalizumab sold under the tradename TYSABRI®
  • 4- ⁇ 5-[4-(4-Oxazol-2-yl-phenoxy)-benzyl]-2,5-diaza- bicyclo[2.2.1]hept-2-ylmethyl ⁇ -benzoic acid is co-administered with a beta-agonist.
  • beta-agonists are salbutamol, levalbuterol, formoterol, fenoterol, salmeterol, bambuterol, brocaterol, clenbuterol, terbutalin, tulobuterol, epinephrin, isoprenalin, and hexoprenalin.
  • the compound is co-administered with an
  • the compound is co-administered with a mucolytic and/or a surfactant.
  • exemplary mucolytics and surfactants are acetylcystein, ambroxol, carbocystein, tyloxapol, dipalmytoylphosphatidylcholin, recombinant surfactant proteins, and DNase.
  • the compound is co-administered with an antibiotic agent.
  • antibiotics are beta-lactam antibiotics, including amoxycillin, piperacillin, clavulan acid, and sulbactam, cephalosporines, including cefaclor, cefazedon, Cefuroxim, Cefoxitin, cefodizim, cefsulodin, cefpodixim, and cefixim, carbapenemes such as imipenem and cilastatin, monbactames, such as, aztrenonam, aminoglycosides, including streptomycin, neomycin, paromomycin, kanamycin, gentamycin, amicacin, tobramycin, and spectinomycine, tetracyclines, such as doxycyclin and minocycline, macrolides including erythromycine, clarithromycine, roxithromycine, azithromycine, josamycine, and spiramycine, gyrase inhibitors or quinolones such as
  • the compound is co-administered with an anti-inflammatory drug.
  • anti-inflammatory drugs include romoglycate and nedocromil.
  • the compound is co-administered with a corticosteroid.
  • corticosteroids are beclomethasone, betamethasone, budesonide, ciclesonide, flunisolide, fluticasone, icomethasone, mometasone, rofleponide, triamcinolone, bradykinine, prostaglandine, leucotriene and platelet activating factor antagonists.
  • a compound when a compound is co-administered with at least one additional therapeutic agent, the compound can be administered simultaneously with, prior to, or after administration of one or more other therapeutic agents.
  • Such combination therapy includes administration of a single pharmaceutical dosage formulation which contains the compound and one or more additional active agents, as well as administration of the compound and each active agent in its own separate pharmaceutical dosage formulation.
  • the compound and the other therapeutic agent can be administered to the patient together in a single oral dosage composition such as a tablet or capsule, or each agent can be administered in separate oral dosage formulations.
  • the compound and one or more additional active agents can be administered at essentially the same time, i.e., concurrently, or at separately staggered times, i.e.,
  • combination therapy is understood to include all these regimens.
  • the invention also encompasses pharmaceutical compositions.
  • the pharmaceutical compositions of the invention can be prepared by combining 4- ⁇ [(l S,4S)-5-( ⁇ 4-[4-oxazol-2- yl-phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid with an appropriate pharmaceutically acceptable carrier, diluent or excipient, and can be formulated into preparations in solid, semi-solid, or liquid forms, such as tablets, capsules, powders, granules, solutions, and the like.
  • Pharmaceutical compositions of the invention are formulated so as to allow the active ingredients contained therein to be bioavailable upon administration of the composition to a patient.
  • compositions that will be administered to a subject or patient take the form of one or more dosage units, where for example, a tablet can be a single dosage unit or a tablet can be one-half of single dosage unity.
  • Actual methods of preparing such dosage forms are known, or will be apparent, to those skilled in this art; for example, see The Science and Practice of Pharmacy, 20th Edition (Philadelphia College of Pharmacy and Science, 2000) and Remington: The Science and Practice of Pharmacy, 22nd Edition (Pharmaceutical Press and Philadelphia College of Pharmacy at University of the Sciences, 2012).
  • the composition to be administered will, in any event, contain an effective amount of a compound as described herein (for example, 100 mg or less), or a pharmaceutically acceptable salt thereof, for treatment of a disease or condition of interest in accordance with the teachings of this invention.
  • a pharmaceutical composition of the invention can be in the form of a solid or liquid.
  • the carrier(s) are particulate, so that the compositions are, for example, in tablet or powder form.
  • the carrier(s) can be liquid, with the compositions being, for example, an oral syrup.
  • the pharmaceutical composition can be in either solid or liquid form, where semi-solid, semi-liquid, suspension and gel forms are included within the forms considered herein as either solid or liquid.
  • the pharmaceutical composition can be formulated into a powder, granule, compressed tablet, pill, capsule, chewing gum, wafer or the like form. Such a solid composition will typically contain one or more inert diluents or edible carriers.
  • binders such as carboxymethylcellulose, ethyl cellulose, microcrystalline cellulose, gum tragacanth or gelatin; excipients such as starch, lactose or dextrins, disintegrating agents such as alginic acid, sodium alginate, Primogel, corn starch and the like; lubricants such as magnesium stearate or Sterotex; glidants such as colloidal silicon dioxide; sweetening agents such as sucrose or saccharin; a flavoring agent such as peppermint, methyl salicylate or orange flavoring; and a coloring agent.
  • excipients such as starch, lactose or dextrins, disintegrating agents such as alginic acid, sodium alginate, Primogel, corn starch and the like
  • lubricants such as magnesium stearate or Sterotex
  • glidants such as colloidal silicon dioxide
  • sweetening agents such as sucrose or saccharin
  • a flavoring agent such as peppermint, methyl sal
  • the pharmaceutical composition when in the form of a capsule, for example a gelatin capsule, it may contain, in addition to materials of the above type, a liquid carrier such as polyethylene glycol or oil.
  • a liquid carrier such as polyethylene glycol or oil.
  • the pharmaceutical composition can be in the form of a liquid, for example, an elixir, syrup, solution, emulsion or suspension.
  • the composition can contain, in addition to combining 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5- diazabicyclo[2.2. l]heptan-2-yl]methyl ⁇ benzoic acid, one or more of a sweetening agent, preservatives, dye/colorant and flavor enhancer.
  • the liquid pharmaceutical compositions of the invention can include one or more of the following adjuvants: sterile diluents, fixed oils such as synthetic mono or diglycerides which may serve as the solvent or suspending medium, polyethylene glycols, glycerin, propylene glycol or other solvents; antibacterial agents such as benzyl alcohol or methyl paraben; antioxidants such as ascorbic acid or sodium bisulfite; chelating agents such as ethylenediaminetetraacetic acid; buffers such as acetates, citrates or phosphates and agents for the adjustment of tonicity such as sodium chloride or dextrose.
  • adjuvants sterile diluents, fixed oils such as synthetic mono or diglycerides which may serve as the solvent or suspending medium, polyethylene glycols, glycerin, propylene glycol or other solvents
  • antibacterial agents such as benzyl alcohol or methyl paraben
  • antioxidants such as ascorbic acid or sodium bisulfit
  • the pharmaceutical composition of the invention can include various materials, which modify the physical form of a solid or liquid dosage unit.
  • the composition can include materials that form a coating shell around the active ingredients.
  • the materials that form the coating shell are typically inert, and may be selected from, for example, sugar, shellac, and other enteric coating agents.
  • the active ingredients can be encased in a gelatin capsule.
  • the compound, 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl- phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid is a milled solid.
  • the milled solid has a monodisperse particle size distribution having a D90 of about 50 microns or less.
  • the milled solid has a monodisperse particle size distribution having a D90 of about 15 microns or less.
  • the milled solid has a monodisperse particle size distribution having a D90 between 10 and 15 microns. D90 refers to a particle size where 90 volume percent of the particles are smaller than the indicated diameter.
  • the compound is a solid that is amorphous or crystalline in physical structure. In certain aspects, the compound is a solid that is crystalline. In yet additional embodiments, the compound is crystalline, wherein the crystalline form is characterized by the x-ray powder diffraction pattern substantially as shown in FIG. 2. In this context, the term “substantially” refers variations in intensity and 2-theta values typically observed in the art depending on instrument and sample preparation.
  • the compound, 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl- phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid is a powder.
  • the pharmaceutical composition comprises the compound as a powder and an excipient selected from the group consisting of a carrier, an emulsifier, a disintegrants, a lubricant, a glidants or flow aid, or a combination of any thereof.
  • carriers are mannitol and lactose.
  • a non-limiting example of an emulsifier is methylcellulose.
  • Non-limiting examples of disintegrants are croscarmellose or crospovidone.
  • a non-limiting example of a lubricant is magnesium stearate.
  • a non-limiting example of a glidant or flow aid is silicon dioxide. In certain embodiments, the
  • composition comprises the compound as a solid powder and the composition further comprises lactose, methylcellulose, crospovidone, and magnesium stearate.
  • pharmaceutical composition comprises the compound as a solid powder and the composition further comprises mannitol, methylcellulose, croscarmellose and/or magnesium stearate.
  • pharmaceutical composition comprises the compound as a solid powder and the composition further comprises lactose,
  • the pharmaceutical composition comprises the compound as a solid powder and the composition further comprises mannitol,
  • methylcellulose, croscarmellose and/or magnesium stearate and further comprises a glidants of flow aid.
  • the glidants or flow aid is silicon dioxide.
  • the pharmaceutical composition comprises the compound as a solid powder or powder blend and wherein the pharmaceutical composition is in the form of a capsule or a tablet.
  • the pharmaceutical composition is capsule containing the compound as a solid powder or powder blend.
  • the pharmaceutical composition is a gelatin capsule containing compound as a solid powder or powder blend.
  • the ICso of 4- ⁇ [(lS,4S)-5-( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl ⁇ benzoic acid in human whole blood has been determined using an ex vivo assay.
  • the human whole blood assay has been described in Penning et al (2000), Structure and Activity Relationship Studies on l-[2-(4- Phenylphenoxy)ethyl]pyrrolidone (SC-22716), a Potent Inhibitor of Leukotriene A4 (LTA4) hydrolase, J. Med. Chem.
  • LTB4 production is stimulated by addition of calcium ionophone (A23187) in the absence or presence of varied concentrations of 4- ⁇ [(lS,4S)-5- ( ⁇ 4-[4-oxazol-2-yl-phenoxy]phenyl ⁇ methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl ⁇ benzoic acid.
  • LTB4 production is determined by ELISA.
  • This ELISA assay was performed using the Leukotriene B4 EIA Kit available from Cayman Chemical (Item No. 5201 1 1) and the assay was performed according to the manufacturer's instructions.

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Abstract

The present invention is directed to methods of inhibiting LTA4-h in a human patient and method of treating a condition ameliorated by the inhibition of leukotriene A4 hydrolase activity in a human patient comprising administering to said human patient the compound, 4- {5-[4-(4-Oxazol-2-yl-phenoxy)-benzyl]-2,5-diaza-bicyclo[2.2.1]hept-2-ylmethyl}-benzoic acid.

Description

METHODS OF INHIBITING LEUKOTRIENE A4 HYDROLASE
RELATED APPLICATION
This application claims the benefit of U.S. Provisional Application No. 61/776,981 filed March 12, 2013. The entire teachings of the above application are incorporated herein by reference.
BACKGROUND OF THE INVENTION
LTA4-I1 is a monomeric, soluble 69 kD zinc metalloenzyme. It catalyses two reactions: the stereospecific epoxide hydrolase reaction to convert LTA4 to leukotriene B4 (LTB4) and a peptidase cleavage of chromogenic substrates. Leukotriene B4 (LTB4) is a major pro-inflammatory mediator. LTA4-I1 and receptors to LTB4 are known to be elevated in a number of human lung diseases including cystic fibrosis, asthma and chronic obstructive pulmonary disease (COPD). Additionally, elevated levels of LTA4-H have been located at active demyelinating lesions in the brains of patients with multiple sclerosis (MS).
LTA4-I1 inhibitors have been described, for example, in U.S. Patent No. 7,737, 145 and U.S. Patent Application Publication No. 20100210630A1, the contents of each of which are incorporated by reference herein. A specific LTA4-I1 inhibitor described in these patent publications is 4- {[(l S,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid. In preclinical studies, this compound was shown to reduce the progression of chronic inflammation in several animal models. 4- {[(l S,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl}benzoic acid is in development for the treatment of specific inflammatory disorders.
It would be advantageous to develop additional methods of inhibiting LTA4-h in human patients. SUMMARY OF THE INVENTION
The present invention is directed to methods of inhibiting LTA4-I1 in a human patient and methods of treating a condition ameliorated by the inhibition of leukotriene A4 hydrolase activity in a human patient comprising administering to said human patient the compound, wherein the compound is 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid, at a dose of about 100 mg or less, and wherein the compound is administered orally. In some embodiments, the compound is administered at a dose between about 1 mg and about 100 mg, a dose between about 1 mg and about 75 mg, a dose between about 1 mg and about 50 mg, a dose between about 1 mg and about 30 mg, or a dose between about 5 mg and about 25 mg. In some embodiments, the compound is administered at a dose between about 5 mg and about 15 mg. In certain aspects, the compound is administered at a dose of about 5 mg.
The invention also encompasses a pharmaceutical composition comprising the compound, 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid, wherein the amount of the compound present in the composition is about 100 mg or less, and wherein the composition is an oral dosage form. In some embodiments, the amount of the compound is between about 1 mg and about 100 mg, between about 1 mg and about 75 mg, between about 1 mg and about 50 mg, between about 1 mg and about 30 mg, or between about 5 mg and about 25 mg. In some embodiments, the compound is present in the composition in an amount between about 5 mg and about 15 mg. In yet additional embodiments, the compound is present in the composition in an amount of about 5 mg.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 shows a plot of plasma concentration (ng/ml) over time (hours) of 50 mg, 15 mg and 5 mg of 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid. The two sets of dashed, horizontal lines indicate the plasma concentration that is three-times (3x) the IC50 and the plasma
concentration that is one-time (lx) the IC50 of 4-{[(lS,4S)-5-({4-[4-oxazol-2-yl- phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid in human blood.
FIG. 2 shows the x-ray powder diffraction pattern of 4- {[(lS,4S)-5-({4-[4-oxazol-2- yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid.
DETAILED DESCRIPTION OF THE INVENTION
A description of preferred embodiments of the invention follows. As used herein, the words "a" and "an" are meant to include one or more unless otherwise specified. For example, the term "an additional therapeutic agent" encompasses both a single additional therapeutic agent and a combination of two or more additional therapeutic agents.
It is to be understood that when the range of the dose or amount of the compound is described as "between" a low end of the range and "between" a high end of the range, the range is meant to include both, the low end and the high end as well as doses in between the low and high ends. For example, for "a dose between about 1 mg and about 100 mg," it is to be understood that the range includes the low end of the range, 1 mg, and the high end of the range, 100 mg, as well as the doses in between.
The present invention is based on the discovery that a low dose oral formulation of 4- {[(l S,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl}benzoic acid is therapeutically effective. Preclinical research conducted in mouse, rat, and dog models projected an effective oral dose of the compound for humans of at least 100 to 200 mg. However, pharmacokinetic studies (the results of which are described in more detail below) have demonstrated that an oral formulation containing less than 100 mg is effective. These studies have shown that a dose as low as 5 mg can achieve therapeutic levels of the compound in the blood.
The invention is directed to the administration of an effective oral dose of 4- {[(l S,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl}benzoic acid. This compound and methods for the preparation thereof have been described in detail in U.S. Patent No. 7,737, 145 and U.S. Patent Application Publication No. 2010021063 OA 1, the contents of each of which are incorporated by reference herein 4- {[(l S,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl}benzoic acid has the chemical structure shown below:
Figure imgf000004_0001
The methods of the invention relate to inhibiting LTA4 hydrolase activity in human patients, and thus are useful in treating conditions which are ameliorated by the inhibition of LTA4 hydrolase activity. Such diseases and conditions include inflammatory conditions and autoimmune diseases. Exemplary inflammatory conditions are pulmonary and respiratory tract inflammation.
In some embodiments, the condition that is treated is a chronic condition. Exemplary chronic conditions are cystic fibrosis, idiopathic pulmonary fibrosis, multiple sclerosis, inflammatory bowel disease, and interstitial lung disease associated with systemic sclerosis (scleroderma). In additional embodiments, the condition that is treated is an acute condition. Exemplary acute conditions are allergic rhinitis and myocardial infarction. The invention can also be used in the treatment of mild, non-life threatening conditions such as acne and gingivitis.
In some embodiments, the human patient is a pediatric patient. A pediatric patient can, for example, be a patient less than 16 years of age, less than 12 years of age, less than 10 years of age, less than 8 years of age, less than 6 years of age, less than 5 years of age, less than 2 years of age, or an infant. In some embodiments, the pediatric patient is suffering from cancer. In certain additional embodiments, the pediatric patient is suffering from a respiratory or pulmonary inflammation.
Conditions that can be ameliorated by LTA4-h inhibition and that can be treated according to the methods of the invention include, for example, acute or chronic
inflammation, anaphylactic reactions, allergic reactions, allergic contact dermatitis, allergic rhinitis, chemical and non-specific irritant contact dermatitis, urticaria, atopic dermatitis, psoriasis, fistulas associated with Crohn's disease, pouchitis, septic or endotoxic shock, hemorrhagic shock, shock-like syndromes, capillary leak syndromes induced by
immunotherapy of cancer, acute respiratory distress syndrome, cystic fibrosis, traumatic shock, immune- and pathogen-induced pneumonias, immune complex-mediated pulmonary injury and chronic obstructive pulmonary disease, inflammatory bowel diseases (including ulcerative colitis, Crohn's disease and post-surgical trauma), gastrointestinal ulcers, diseases associated with ischemia-reperfusion injury (including acute myocardial ischemia and infarction, acute renal failure, ischemic bowel disease and acute hemorrhagic or ischemic stroke), immune-complex-mediated glomerulonephritis, autoimmune diseases (including insulin-dependent diabetes mellitus, multiple sclerosis, rheumatoid arthritis, osteoarthritis and systemic lupus erythematosus), acute and chronic organ transplant rejection, transplant arteriosclerosis and fibrosis, cardiovascular disorders (including hypertension,
atherosclerosis, aneurysm, critical leg ischemia, peripheral arterial occlusive disease and Reynaud's syndrome), complications of diabetes (including diabetic nephropathy, neuropathy and retinopathy), ocular disorders (including macular degeneration and glaucoma), neurodegenerative disorders (including delayed neurodegeneration in stroke, Alzheimer's disease, Parkinson's disease, encephalitis and HIV dementia), inflammatory and neuropathic pain including arthritic pain, periodontal disease including gingivitis, ear infections, migraine, benign prostatic hyperplasia, and cancers (including, but not limited to, leukemias and lymphomas, prostate cancer, breast cancer, lung cancer, malignant melanoma, renal carcinoma, head and neck tumors and colorectal cancer).
The methods of the invention also encompass treating folliculitis induced by inhibitors of epidermal growth factor (EGF) or epidermal growth factor receptor (EGFR) kinase used in the treatment of solid tumors. Clinical trials have shown that folliculitis (inflammation of the hair follicle manifested by severe acne-like skin rash on the face, chest and upper back) is a major dose-limiting side effect of such treatments. Such folliculitis is associated with an infiltration of neutrophils suggesting products secreted by activated neutrophils to be the cause of the inflammation. The methods described herein can be used to inhibit neutrophil or eosinophil-mediated inflammation, and therefore encompass the treatment of folliculitis, thereby improving the quality of life of the treated cancer patients but also allowing for the increase of the dosage of the EGF inhibitor or EGFR kinase inhibitor or the extension of the duration of the treatment, resulting in improved efficacy of the desired inhibitor.
The methods also encompass the treatment of pulmonary and respiratory
inflammation disorders in humans, including, but not limited to, asthma, chronic bronchitis, bronchiolitis, bronchiolitis obliterans (including such with organizing pneumonia), allergic inflammation of the respiratory tract (including rhinitis and sinusitis), eosinophilic granuloma, pneumonias, pulmonary fibroses, pulmonary manifestations of connective tissue diseases, acute or chronic lung injury, chronic obstructive pulmonary disease (COPD), adult respiratory distress syndrome (ARDS), and non- infectious inflammatory disorders of the lung characterized by eosinophil infiltration. In specific examples, the inflammation is eosinophil- mediated inflammation of the lung or tissues; neutrophil-mediated inflammation of the lung; lymphocyte-mediated inflammation of the lung; airway hyper-responsiveness; and airway and vascular inflammation.
The methods also encompass the treatment of myocardial infarction or susceptibility to myocardial infarction in humans, transient ischemic attack, transient monocular blindness, stroke or susceptibility of stroke, claudication, peripheral arterial occlusive disease or susceptibility to peripheral arterial occlusive disease, and acute coronary syndrome (such as unstable angina, non-ST-elevation myocardial infarction or ST-elevation myocardial infarction). The methods also encompass methods for reducing the risk of myocardial infarction, stroke or peripheral arterial occlusive disease in mammals and reducing the risk of a second myocardial infarction or stroke.
Also encompassed is the treatment of atherosclerosis in humans who require treatment (such as angioplasty, stents, coronary artery bypass graft) in order to restore blood flow in the arteries (such as in the coronary arteries).
The methods described herein can also be used in the treatment of neurodegenerative diseases. Non-limiting examples of neurodegenerative diseases that can be treated according to a method of the invention are amyotrophic lateral sclerosis (ALS), Parkinson's disease and Huntington's disease.
The methods also encompass the treatment of cancer. In some embodiments, the cancer is leukemia. Specific exemplary leukemias that can be treated by administering a compound of the invention are Chronic Granulocytic Leukemias, Chronic B-Cell Leukemias and Chronic Myelogenous Leukemias. The invention also encompasses a method of treating a solid tumor in a subject in need thereof. Non-limiting examples of solid tumors that can be treated according to the methods described herein are ovarian, esophageal and hepatocellular tumors.
In some embodiments, the invention is directed to a method of treating a condition selected from the group consisting of cystic fibrosis, idiopathic pulmonary fibrosis, interstitial lung disease associated with systemic sclerosis, atherosclerosis, osteoarthritis, Alzheimer's disease, osteoporosis, and type II diabetes, allergic rhinitis, acne, and gingivitis.
Also encompassed is a method of treating an eosinophilic disorder. Exemplary eosinophilic disorders are eosinophilic esophagitis, eosinophilic gastroenteritis, eosinophilic colitis, eosinophilic fasciitis, eosinophilic pneumonia, eosinophilic cystitis, hypereosinophilic syndrome and Churg Strauss Syndrome. In some embodiments, the eosinophilic disorder is eosinophilic esophagitis.
The invention encompasses methods wherein 4- {5-[4-(4-Oxazol-2-yl-phenoxy)- benzyl]-2,5-diaza-bicyclo[2.2.1]hept-2-ylmethyl}-benzoic acid is co-administered with at least one additional therapeutic agent. For example, in some embodiments, the condition is cancer and 4- {5-[4-(4-Oxazol-2-yl-phenoxy)-benzyl]-2,5-diaza-bicyclo[2.2. l]hept-2- ylmethyl} -benzoic acid is administered with a chemotherapeutic agent. In another example, the human patient is suffering from chronic obstructive pulmonary disease (COPD) and the additional therapeutic agent is a drug used in the treatment of COPD, such as a
bronchodilator. In an additional example, the condition is COPD and the at least one additional therapeutic agent is selected from the group consisting of a beta-agonist, an anticholinergic, a glucocorticoid, or a combination thereof. In yet additional embodiments, the human patient is suffering from cystic fibrosis and the additional therapeutic agent is a drug used in the treatment of cystic fibrosis, for example, an antibiotic, a mucolytic, a surfactant, a pancreatic enzyme replacement drug, or a combination thereof. In yet other aspects of the invention, the condition is interstitial lung disease (ILD), a frequent complication of systemic sclerosis, and the additional therapeutic agent is a therapeutic agent used in the treatment of interstitial lung disease including, for example, glucocorticoids, cyclophosphamide, azathioprine, methotrexate, and mycophenolate mofetil. In some embodiments, the condition is multiple sclerosis and the additional therapeutic agent is a therapeutic agent used in the treatment of multiple sclerosis including, for example, teriflunomide (sold under the tradename AUBAGIO®), interferon-beta-la (sold under the tradenames AVONEX® and REBIF®), interferon-beta-lb (sold under the tradenames BETASERON® and EXTAVIA®), glatiramer acetate (sold under the tradename
COPAXONE®, fingolimod (sold under the tradename GILENYA®), mitoxantrone (sold under the tradename (NOVANTRONE®), and natalizumab (sold under the tradename TYSABRI®).
In some embodiments, 4-{5-[4-(4-Oxazol-2-yl-phenoxy)-benzyl]-2,5-diaza- bicyclo[2.2.1]hept-2-ylmethyl}-benzoic acid is co-administered with a beta-agonist.
Exemplary beta-agonists are salbutamol, levalbuterol, formoterol, fenoterol, salmeterol, bambuterol, brocaterol, clenbuterol, terbutalin, tulobuterol, epinephrin, isoprenalin, and hexoprenalin. In another embodiment, the compound is co-administered with an
anticholinergic agent. Exemplary anticholinergics are tiotropium, oxitropium, ipratropium, and glcopyrrolate. In a further embodiment, the compound is co-administered with a mucolytic and/or a surfactant. Exemplary mucolytics and surfactants are acetylcystein, ambroxol, carbocystein, tyloxapol, dipalmytoylphosphatidylcholin, recombinant surfactant proteins, and DNase. In one embodiment, the compound is co-administered with an antibiotic agent. Exemplary antibiotics are beta-lactam antibiotics, including amoxycillin, piperacillin, clavulan acid, and sulbactam, cephalosporines, including cefaclor, cefazedon, Cefuroxim, Cefoxitin, cefodizim, cefsulodin, cefpodixim, and cefixim, carbapenemes such as imipenem and cilastatin, monbactames, such as, aztrenonam, aminoglycosides, including streptomycin, neomycin, paromomycin, kanamycin, gentamycin, amicacin, tobramycin, and spectinomycine, tetracyclines, such as doxycyclin and minocycline, macrolides including erythromycine, clarithromycine, roxithromycine, azithromycine, josamycine, and spiramycine, gyrase inhibitors or quinolones such as ciprofloxacin, ofloxacine, levofloxacine, pefloxacine, lomefloxacine, fleroxacine, clinafloxacine, sitafloxacine, gemifloxacine, balofloxacine, trovafloxacine, and moxifloxacine, sulfonamides and nitroimidazoles including metronidazol, tinidazol), chloramphenicol, lincomycine, clindamycine, and fosfomycine, and glycopeptides such as Vancomycine and Teicoplanine. In yet additional embodiments, the compound is co-administered with an anti-inflammatory drug. Exemplary anti-inflammatory drugs include romoglycate and nedocromil. In an additional aspect, the compound is co-administered with a corticosteroid. Exemplary corticosteroids are beclomethasone, betamethasone, budesonide, ciclesonide, flunisolide, fluticasone, icomethasone, mometasone, rofleponide, triamcinolone, bradykinine, prostaglandine, leucotriene and platelet activating factor antagonists.
It is to be understood that when a compound is co-administered with at least one additional therapeutic agent, the compound can be administered simultaneously with, prior to, or after administration of one or more other therapeutic agents. Such combination therapy includes administration of a single pharmaceutical dosage formulation which contains the compound and one or more additional active agents, as well as administration of the compound and each active agent in its own separate pharmaceutical dosage formulation. For example, the compound and the other therapeutic agent can be administered to the patient together in a single oral dosage composition such as a tablet or capsule, or each agent can be administered in separate oral dosage formulations. Where separate dosage formulations are used, the compound and one or more additional active agents can be administered at essentially the same time, i.e., concurrently, or at separately staggered times, i.e.,
sequentially; and/or in the same treatment session and/or as part of the same treatment regimen; combination therapy is understood to include all these regimens.
The invention also encompasses pharmaceutical compositions. The pharmaceutical compositions of the invention can be prepared by combining 4-{[(l S,4S)-5-({4-[4-oxazol-2- yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid with an appropriate pharmaceutically acceptable carrier, diluent or excipient, and can be formulated into preparations in solid, semi-solid, or liquid forms, such as tablets, capsules, powders, granules, solutions, and the like. Pharmaceutical compositions of the invention are formulated so as to allow the active ingredients contained therein to be bioavailable upon administration of the composition to a patient. Compositions that will be administered to a subject or patient take the form of one or more dosage units, where for example, a tablet can be a single dosage unit or a tablet can be one-half of single dosage unity. Actual methods of preparing such dosage forms are known, or will be apparent, to those skilled in this art; for example, see The Science and Practice of Pharmacy, 20th Edition (Philadelphia College of Pharmacy and Science, 2000) and Remington: The Science and Practice of Pharmacy, 22nd Edition (Pharmaceutical Press and Philadelphia College of Pharmacy at University of the Sciences, 2012). The composition to be administered will, in any event, contain an effective amount of a compound as described herein (for example, 100 mg or less), or a pharmaceutically acceptable salt thereof, for treatment of a disease or condition of interest in accordance with the teachings of this invention.
A pharmaceutical composition of the invention can be in the form of a solid or liquid. In one aspect, the carrier(s) are particulate, so that the compositions are, for example, in tablet or powder form. The carrier(s) can be liquid, with the compositions being, for example, an oral syrup. Thus, the pharmaceutical composition can be in either solid or liquid form, where semi-solid, semi-liquid, suspension and gel forms are included within the forms considered herein as either solid or liquid. As a solid composition for oral administration, the pharmaceutical composition can be formulated into a powder, granule, compressed tablet, pill, capsule, chewing gum, wafer or the like form. Such a solid composition will typically contain one or more inert diluents or edible carriers. In addition, one or more of the following may be present: binders such as carboxymethylcellulose, ethyl cellulose, microcrystalline cellulose, gum tragacanth or gelatin; excipients such as starch, lactose or dextrins, disintegrating agents such as alginic acid, sodium alginate, Primogel, corn starch and the like; lubricants such as magnesium stearate or Sterotex; glidants such as colloidal silicon dioxide; sweetening agents such as sucrose or saccharin; a flavoring agent such as peppermint, methyl salicylate or orange flavoring; and a coloring agent.
When the pharmaceutical composition is in the form of a capsule, for example a gelatin capsule, it may contain, in addition to materials of the above type, a liquid carrier such as polyethylene glycol or oil.
The pharmaceutical composition can be in the form of a liquid, for example, an elixir, syrup, solution, emulsion or suspension. The composition can contain, in addition to combining 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2. l]heptan-2-yl]methyl}benzoic acid, one or more of a sweetening agent, preservatives, dye/colorant and flavor enhancer. The liquid pharmaceutical compositions of the invention, whether solutions, suspensions or other like form, can include one or more of the following adjuvants: sterile diluents, fixed oils such as synthetic mono or diglycerides which may serve as the solvent or suspending medium, polyethylene glycols, glycerin, propylene glycol or other solvents; antibacterial agents such as benzyl alcohol or methyl paraben; antioxidants such as ascorbic acid or sodium bisulfite; chelating agents such as ethylenediaminetetraacetic acid; buffers such as acetates, citrates or phosphates and agents for the adjustment of tonicity such as sodium chloride or dextrose.
The pharmaceutical composition of the invention can include various materials, which modify the physical form of a solid or liquid dosage unit. For example, the composition can include materials that form a coating shell around the active ingredients. The materials that form the coating shell are typically inert, and may be selected from, for example, sugar, shellac, and other enteric coating agents. Alternatively, the active ingredients can be encased in a gelatin capsule.
In certain aspects of the invention, the compound, 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl- phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid, is a milled solid. In some aspects, the milled solid has a monodisperse particle size distribution having a D90 of about 50 microns or less. In some embodiments, the milled solid has a monodisperse particle size distribution having a D90 of about 15 microns or less. In yet another embodiment, the milled solid has a monodisperse particle size distribution having a D90 between 10 and 15 microns. D90 refers to a particle size where 90 volume percent of the particles are smaller than the indicated diameter.
In some embodiments, the compound is a solid that is amorphous or crystalline in physical structure. In certain aspects, the compound is a solid that is crystalline. In yet additional embodiments, the compound is crystalline, wherein the crystalline form is characterized by the x-ray powder diffraction pattern substantially as shown in FIG. 2. In this context, the term "substantially" refers variations in intensity and 2-theta values typically observed in the art depending on instrument and sample preparation.
In certain embodiments, the compound, 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl- phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid is a powder. In certain additional aspects, the pharmaceutical composition comprises the compound as a powder and an excipient selected from the group consisting of a carrier, an emulsifier, a disintegrants, a lubricant, a glidants or flow aid, or a combination of any thereof. Non-limiting examples of carriers are mannitol and lactose. A non-limiting example of an emulsifier is methylcellulose. Non-limiting examples of disintegrants are croscarmellose or crospovidone. A non-limiting example of a lubricant is magnesium stearate. A non-limiting example of a glidant or flow aid is silicon dioxide. In certain embodiments, the
pharmaceutical composition comprises the compound as a solid powder and the composition further comprises lactose, methylcellulose, crospovidone, and magnesium stearate. In yet additional embodiments, the pharmaceutical composition comprises the compound as a solid powder and the composition further comprises mannitol, methylcellulose, croscarmellose and/or magnesium stearate. In additional aspects, the pharmaceutical composition comprises the compound as a solid powder and the composition further comprises lactose,
methylcellulose, crospovidone, and/or magnesium stearate and further comprises a glidant or flow aid. In yet additional embodiments, the pharmaceutical composition comprises the compound as a solid powder and the composition further comprises mannitol,
methylcellulose, croscarmellose and/or magnesium stearate, and further comprises a glidants of flow aid. In some embodiments, the glidants or flow aid is silicon dioxide.
In some embodiments, the pharmaceutical composition comprises the compound as a solid powder or powder blend and wherein the pharmaceutical composition is in the form of a capsule or a tablet. In an additional embodiment, the pharmaceutical composition is capsule containing the compound as a solid powder or powder blend. In yet another embodiment, the pharmaceutical composition is a gelatin capsule containing compound as a solid powder or powder blend.
The invention is illustrated by the following non-limiting examples.
EXEMPLIFICATION
Example 1
The ICso of 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid in human whole blood has been determined using an ex vivo assay. The human whole blood assay has been described in Penning et al (2000), Structure and Activity Relationship Studies on l-[2-(4- Phenylphenoxy)ethyl]pyrrolidone (SC-22716), a Potent Inhibitor of Leukotriene A4 (LTA4) hydrolase, J. Med. Chem. 43: 721-735, the contents of which are expressly incorporated by reference herein. In this assay, LTB4 production is stimulated by addition of calcium ionophone (A23187) in the absence or presence of varied concentrations of 4- {[(lS,4S)-5- ({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2- yl]methyl}benzoic acid. The ability of 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl- phenoxy]phenyl}methyl)-2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid to reduce is LTB4 production is determined by ELISA. This ELISA assay was performed using the Leukotriene B4 EIA Kit available from Cayman Chemical (Item No. 5201 1 1) and the assay was performed according to the manufacturer's instructions. In this assay, 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)-2,5- diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid has an IC50 in human whole blood of approximately 30 ng/mL (60 and 68 nanomolar in male and female blood, respectively). The results of this assay are shown in FIG. 1. Human pharmacokinetics demonstrate that a 15 mg dose achieves a blood plasma level that exceeds the IC50 for over 12 hours and 50 mg exceeds by 3 -times the IC50 for over 24 hours, while 5 mg nearly achieves the IC50 at its peak concentration. Thus, oral human doses as low as 10 mg can provide therapeutic benefit in the current formulation and, with improved formulation, doses as low as 5 mg can achieve therapeutic levels of the compound in blood.
While this invention has been particularly shown and described with references to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims.

Claims

CLAIMS What is claimed:
1. A method for the treatment of a condition ameliorated by the inhibition of leukotriene A4 hydrolase activity in a human patient comprising administering to said human patient the compound, 4- {[(lS,4S)-5-({4-[4-oxazol-2-yl-phenoxy]phenyl}methyl)- 2,5-diazabicyclo[2.2.1]heptan-2-yl]methyl}benzoic acid, at a dose of about 100 mg or less, and wherein the compound is administered orally.
2. The method of claim 1, wherein the compound is administered at a dose between about 1 mg and about 100 mg.
3. The method of claim 2, wherein the compound is administered at a dose between about 1 mg and about 75 mg.
4. The method of claim 3, wherein the compound is administered at a dose between about 1 mg and about 50 mg.
5. The method of claim 4, wherein the compound is administered at a dose between about 1 mg and about 30 mg.
6. The method of claim 5, wherein the compound is administered at a dose between about 5 mg and about 25 mg.
7. The method of claim 6, wherein the compound is administered at a dose between about 5 mg and about 15 mg.
8. The method of claim 7, wherein the compound is administered at a dose of about 5 mg.
9. The method of any one of claims 1 to 8, wherein the condition is a chronic condition.
10. The method of any one of claims 1 to 8, wherein the condition is an acute condition.
1 1. The method of any one of claims 1 to 10, wherein the human patient is a pediatric patient.
12. The method of any one of claims 1 to 10, wherein the condition is an inflammatory condition or an autoimmune disease.
13. The method of claim 12, wherein the condition is a pulmonary or respiratory tract inflammation.
14. The method of claim 12, wherein the condition is selected from the group consisting of cystic fibrosis, idiopathic pulmonary fibrosis, and interstitial lung disease associated with systemic sclerosis.
15. The method of claim 9, wherein the condition is selected from the group consisting of atherosclerosis, osteoarthritis, Alzheimer's disease, osteoporosis, and type II diabetes.
16. The method of claim 12, wherein the condition is selected from the group consisting of allergic rhinitis, acne, and gingivitis.
17. The method of claim 12, wherein the disease or disorder is selected from the group consisting of acute or chronic inflammation, anaphylactic reactions, allergic reactions, allergic contact dermatitis, allergic rhinitis, chemical and non-specific irritant contact dermatitis, urticaria, atopic dermatitis, psoriasis, fistulas associated with Crohn's disease, pouchitis, septic or endotoxic shock, hemorrhagic shock, shock-like syndromes, capillary leak syndromes induced by immunotherapy of cancer, acute respiratory distress syndrome, traumatic shock, immune- and pathogen-induced pneumonias, immune complex-mediated pulmonary injury and chronic obstructive pulmonary disease, inflammatory bowel diseases, gastrointestinal ulcers, diseases associated with ischemia-reperfusion injury, immune-complex-mediated
glomerulonephritis, autoimmune diseases acute and chronic organ transplant rejection, transplant arteriosclerosis and fibrosis, cardiovascular disorders, complications of diabetes, ocular disorders, neurodegenerative disorders, inflammatory and neuropathic pain including arthritic pain, periodontal disease including gingivitis, ear infections, migraine, benign prostatic hyperplasia, and cancers.
18. The method of claim 17, wherein the condition is cancer.
19. The method of claim 18, wherein the cancer is selected from the group consisting of leukemia, lymphoma, prostate cancer, breast cancer, lung cancer, malignant melanoma, renal carcinoma, head and neck tumors and colorectal cancer.
20. The method of any one of claims 1 to 19, wherein the compound is co-administered with at least one additional therapeutic agent.
21. The method of claim 20, wherein the condition is cancer and the at least one
additional therapeutic agent is a chemotherapeutic drug.
22. The method of claim 20, wherein the condition is chronic obstructive pulmonary disease.
23. The method of claim 22, wherein the at least one additional therapeutic agent is a bronchodilator.
24. The method of claim 22, wherein the additional therapeutic agent is selected from the group consisting of a beta-agonist, an anticholinergic, a glucocorticoid, or a combination thereof.
25. The method of claim 20, wherein the condition is cystic fibrosis.
26. The method of claim 25, wherein the additional therapeutic agent is an antibiotic, a mucolytic, a pancreatic enzyme replacement drug, or a combination thereof.
27. A pharmaceutical composition comprising the compound, 4-[[(l S,4S)-5-[[4-[4-(2- oxazolyl)phenoxy]benzyl]methyl]-2,5-diazabicyclo[2.2.1]hept-2-yl]methyl]benzoic acid and a pharmaceutically acceptable carrier, diluent or excipient, wherein the amount of the compound present in the composition is about 100 mg or less, and wherein the composition is an oral dosage form.
28. The pharmaceutical composition of claim 27, wherein the amount is between about 1 mg and about 100 mg.
29. The pharmaceutical composition of claim 28, wherein the amount is between about 1 mg and about 75 mg.
30. The pharmaceutical composition of claim 29, wherein the amount is between about 1 mg and about 50 mg.
31. The pharmaceutical composition of claim 30, wherein the amount is between about 1 mg and about 30 mg.
32. The pharmaceutical composition of claim 31, wherein the amount is between about 5 mg and about 25 mg.
33. The pharmaceutical composition of claim 32, wherein the amount is between about 5 mg and about 15 mg.
34. The pharmaceutical composition of claim 33, wherein the amount is about 5 mg.
35. The pharmaceutical composition of any one of claims 27 to 34, wherein the
compound is a solid.
36. The pharmaceutical composition of claim 35, wherein the solid is milled.
37. The pharmaceutical composition of claim 35, wherein the solid has a monodisperse particle size distribution having a D90 of about 50 microns or less.
38. The pharmaceutical composition of claim 37, wherein the monodisperse particle size distribution having a D90 of about 15 microns or less.
39. The pharmaceutical composition of claim 38, wherein the monodisperse particle size distribution having a D90 between 10 and 15 microns.
40. The pharmaceutical composition of claim 35, wherein the solid is amorphous or crystalline.
41. The pharmaceutical composition of claim 40, wherein the solid is crystalline.
42. The pharmaceutical composition of claim 35, wherein the solid is a powder.
43. The pharmaceutical composition of claim 42, wherein the excipient is selected from the group consisting to a carrier, an emulsifier, a disintegrants, a lubricant, a glidants or flow aid, or a combination of any thereof.
44. The pharmaceutical composition of claim 43, wherein the composition comprises lactose, methylcellulose, crospovidone, and magnesium stearate.
45. The pharmaceutical composition of claim 44, wherein the composition comprises mannitol, methylcellulose, croscarmellose and magnesium stearate.
46. The pharmaceutical composition of any one of claims 44 or 45, further comprising a glidant or flow aid.
47. The pharmaceutical composition of claim 46, wherein the glidants of flow aid is silicon dioxide.
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