WO2021049519A1 - p-ボロノフェニルアラニンを含有する注射液剤の析出防止方法 - Google Patents
p-ボロノフェニルアラニンを含有する注射液剤の析出防止方法 Download PDFInfo
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- injection solution
- boronophenylalanine
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- preventing precipitation
- sugar alcohol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/08—Solutions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
- A61K41/009—Neutron capture therapy, e.g. using uranium or non-boron material
- A61K41/0095—Boron neutron capture therapy, i.e. BNCT, e.g. using boronated porphyrins
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- 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
- A61K31/69—Boron compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/12—Carboxylic acids; Salts or anhydrides thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to a method for preventing precipitation of an injection solution containing p-boronophenylalanine. More specifically, the present invention relates to a method for preventing precipitation of an injection solution containing p-boronophenylalanine under storage.
- boron neutron capture therapy involves incorporating a boron compound containing the boron-10 isotope ( 10 B) into cancer cells, irradiating them with low-energy neutrons (eg, extrathermal neutrons), and localizing them by a nuclear reaction that occurs inside the cells. It is a therapeutic method that specifically destroys cancer cells. In this treatment method, it is important to selectively accumulate a boron compound containing boron-10 in the cells of cancer tissue in order to enhance the therapeutic effect. Therefore, boron is selectively and surely taken up by cancer cells. It is necessary to develop a compound.
- a boron-containing compound in which a boron atom or a boron atom group is introduced into the basic skeleton has been synthesized as a drug used for BNCT.
- Drugs used in actual clinical practice include p-boronophenylalanine (BPA) and mercaptoundecahydrododecaborate (BSH).
- P-boronophenylalanine has extremely poor solubility at physiological pH.
- Patent Document 1 a fructose complex of BPA is formed (for example, Patent Document 1), or p-boronophenylalanine is added to p-boronophenylalanine in an alkaline solution (in an aqueous solution of sodium hydroxide, etc.). Attempts have been made to add sugar or polyol and remove the inorganic salt with an ion exchange resin before use (for example, Patent Document 2).
- Patent Document 3 U.S. Pat. No. 5,492,900 U.S. Pat. No. 6,169,076 Patent No. 5345771
- the concentration of boron in the blood at the time of administration required to exert its effect as boron neutron capture therapy is limited. Therefore, it is desired to prepare a preparation having excellent stability while keeping the BPA concentration constant so that the therapeutic effect can be maximized.
- an object of the present invention is to provide a method for preventing the precipitation of an injection solution containing p-boronophenylalanine, particularly under storage in a wide temperature range including low temperature storage.
- a method for preventing precipitation of a boron neutron capture therapy injection solution containing p-boronophenylalanine or a pharmaceutically acceptable salt thereof comprises preparing an injectable solution containing p-boronophenylalanine or a pharmaceutically acceptable salt thereof, a sugar alcohol, and a pH adjuster and having a pH controlled to more than 7.5 and less than 8.0. Precipitation prevention method.
- a method for preventing precipitation which comprises preparing an injection solution. [3] The method for preventing precipitation according to [1] or [2], wherein the sugar alcohol is sorbitol or mannitol. [4] The method for preventing precipitation according to any one of [1] to [3], wherein the sugar alcohol concentration is 2.6 to 6.5 w / v%.
- the content ratio of the sugar alcohol is in the range of 0.9 to 3.0 in terms of molar ratio with respect to the content of p-boronophenylalanine.
- Item 8 The method for preventing precipitation according to any one of Items 1 to 7, wherein the injection solution is an intravenous injection solution.
- the unit "mass%” is synonymous with “g / 100g”.
- W / v% is synonymous with “g / 100 ml”.
- One aspect of the present invention is a method for preventing precipitation of an injection solution for boron neutron capture therapy, which contains p-boronophenylalanine or a pharmaceutically acceptable salt thereof, a sugar alcohol, and a pH adjuster.
- This is a precipitation prevention method for controlling the pH of the liquid agent to be in excess of 7.4 and 8.0 or less, preferably in excess of 7.5 and 8.0 or less.
- Another aspect of the present invention is a method for preventing precipitation of an injection solution for boron neutron capture therapy, which contains p-boronophenylalanine or a pharmaceutically acceptable salt thereof, a sugar alcohol, and a pH adjuster.
- This is a precipitation prevention method in which the pH adjusting agent contains an organic acid or a salt thereof, and the pH of the injection solution is controlled to 6.5 to 8.0.
- the p-boronophenylalanine used in the present invention is not particularly limited, but the proportion of boron-10 in the compound is preferably 75% or more, more preferably 80% or more, and further. More preferably, it is 90% or more, and particularly preferably 95% or more.
- Natural boron (boron) contains 20% boron-10 and 80% boron-11 as isotopes of boron-10 and boron-11. Therefore, prior to the production of the injection solution containing p-boronophenylalanine of the present invention, boron (boron-10) having a mass number of 10 is concentrated. For this purpose, boron-10 and boron-11 in the natural boron compound are selected to produce highly concentrated boron-10. As the boron used in the present invention, boron-10 may be concentrated to increase the concentration, or a commercially available product may be used. As commercially available products, for example, it can be a 10 B enriched boric acid (manufactured by Stella Chemifa Corporation) as a starting material.
- Agilent 7500 manufactured by Agilent
- the quadrupole ICP-MS (ICP-QMS) method using a quadrupole mass spectrometer can be used.
- the ICP-QMS used for the measurement is adjusted according to JIS K0133.
- L-form is currently used as p-boronophenylalanine, and L-p-boronophenylalanine can be preferably used in the present invention, but the present invention is not limited to this. That is, racemic p-boronophenylalanine containing both D-form or D-form and L-form can also be used in the present invention.
- p-boronophenylalanine is synthesized, for example, by a known method (for example, HR Synder, AJ Reedy, WMJ Lennarz, J. Am. Chem. Soc. , 1958, 80, 835: C. Malan, C. Morin, SYNLETT, 1996, 167: US Pat. No. 5,157,149: Japanese Patent Application Laid-Open No. 2000-212185: and Japanese Patent No. 2979139) can be used.
- the salt is not particularly limited as long as it is pharmacologically acceptable.
- the salt of p-boronophenylalanine include a salt with an organic acid, a salt with an inorganic acid, a salt with an organic base, a salt with an inorganic base and the like.
- Examples of the salt with the organic acid include acetate, trifluoroacetate, fumarate, maleate, lactate, tartrate, citrate, methanesulfonate and the like.
- Examples of the salt with the inorganic acid include hydrochloride, sulfate, nitrate, hydrobromide, phosphate and the like.
- Examples of the salt with an organic base include a salt with triethanolamine and the like.
- Examples of the salt with the inorganic base include ammonium salt, sodium salt, potassium salt, calcium salt, magnesium salt and the like.
- the content of p-boronophenylalanine or a salt thereof with respect to the total amount of the injection solution is appropriately set depending on the balance with other components.
- the total content of p-boronophenylalanine and / or a salt thereof is not particularly limited, but is preferably 2.0 to 5.5 w / v%, more preferably 2 with respect to the total amount of the injection solution. It is .5 to 5.0 w / v%, more preferably 2.5 to 4.0 w / v%.
- the content of p-boronophenylalanine in the injection solution of the present invention is within the above range, the amount of p-boronophenylalanine is within an appropriate amount for clinical application, the solution stability is good, and the effect at the time of administration is good. Excellent for.
- sugar alcohol used in the present invention is not particularly limited as long as it is used as a component of an injection in the pharmaceutical field.
- the sugar alcohol is not limited, but a monosaccharide sugar alcohol is preferable, and sorbitol and / or mannitol is particularly preferable.
- D-sorbitol which is currently approved for use in pharmaceutical products and whose safety has been confirmed, can be preferably used, but is not limited thereto. That is, in the present invention, an L-form or a mixture of an L-form and a D-form can also be used.
- D-mannitol which is currently approved for use in pharmaceutical products and whose safety has been confirmed, can be preferably used, but is not limited to this. That is, in the present invention, an L-form or a mixture of an L-form and a D-form can also be used.
- the total content of the sugar alcohol used in the injection solution of the present invention depends on the blending amount of other additives, but is preferably 2.0 to 7.0 w / v% with respect to the total amount of the injection solution. , More preferably 2.6 to 6.5 w / v%, and even more preferably 2.6 to 4.2 w / v%.
- the amount of sugar alcohol is preferably 0.9 to 3.0, more preferably 0.9 to 2.0, and even more preferably 1.1 in terms of molar ratio with respect to the amount of p-boronophenylalanine. It is in the range of ⁇ 1.5. When the amount of sugar alcohol is in this range, the precipitation of p-boronophenylalanine can be suppressed, and the osmotic pressure ratio can be adjusted appropriately.
- An antioxidant can be optionally used as the injection solution used in the present invention.
- the antioxidant is not particularly limited as long as it is used as a component of an injection in the pharmaceutical field.
- the antioxidant is, but is not limited to, one or more selected from the group consisting of sulfite, hydrogen sulfite, pyrosulfite, nitrite, ascorbic acid, L-cysteine, thioglycolic acid, and salts thereof. Is preferable.
- alkali metal salts such as sodium salt and potassium salt
- alkalis such as calcium salt and magnesium salt.
- Earth metal salts as well as inorganic bases such as aluminum salts and ammonium salts.
- salts with organic bases such as trimethylamine, triethylamine, pyridine, picoline, ethanolamine, diethanolamine, triethanolamine, dicyclohexylamine and N, N'-dibenzylethylenediamine can also be used.
- Particularly preferred are sodium salts, potassium salts, or ammonium salts.
- antioxidant used in the present invention is the group consisting of sodium sulfite, dry sodium sulfite, potassium sulfite, calcium sulfite, sodium hydrogen sulfite, potassium hydrogen sulfite, ammonium hydrogen sulfite, sodium pyrosulfite, and potassium pyrosulfite.
- sodium sulfite dry sodium sulfite, potassium sulfite, calcium sulfite
- sodium hydrogen sulfite potassium hydrogen sulfite
- ammonium hydrogen sulfite sodium pyrosulfite
- potassium pyrosulfite potassium pyrosulfite
- the total content of the antioxidant used in the injection solution of the present invention depends on the blending amount of other additives, but is preferably 0.005 to 2.0 w / v with respect to the total amount of the injection solution. %, More preferably 0.005 to 1.5 w / v%, even more preferably 0.005 to 1.2 w / v%, even more preferably 0.01 to 0.6 w / v%, most preferably. Is 0.01 to 0.03 w / v%.
- the injection solution used in the present invention further contains water.
- the water used in the present invention is not particularly limited as long as it is used as a component of an injection in the pharmaceutical field.
- the content of water used in the injection solution of the present invention depends on the blending amount of other additives, but is preferably 80 w / v% or more, more preferably 85 w / /, based on the total amount of the injection solution. It is v% or more, preferably 95 w / v% or less, and more preferably 94 w / v% or less.
- the osmotic pressure ratio of the injection solution of the present invention is not particularly limited, but it is preferably in the range of 1.0 to 1.8 in comparison with physiological saline. More preferably, it is in the range of 1.1 to 1.5. Within this range, in the case of a large amount of intravenous injection, it is possible to reduce pain, avoid the onset of phlebitis, and shorten the administration time.
- the injection solution used in the present invention may contain various metal ions that may be contained in the living body as appropriate in order to ensure its stability in and out of the living body.
- sodium ions are contained, and the concentration thereof is not particularly limited, but is particularly preferably 130 mEq / L to 160 mEq / L. This numerical range close to the Na ion concentration range of the body fluid is preferable so that the electrolyte balance between the intracellular fluid and the extracellular fluid is not significantly disturbed.
- a pH adjuster such as an inorganic acid such as hydrochloric acid or phosphoric acid or an alkaline component such as sodium hydroxide or potassium hydroxide can be added to the injection solution used in the present invention.
- an organic acid in addition to or in place of the inorganic acid.
- citric acid, acetic acid, trifluoroacetic acid, fumaric acid, maleic acid, lactic acid, tartaric acid, or methanesulfonic acid is preferably used, and citric acid or lactic acid is more preferable.
- the content of the pH adjuster used in the injection solution used in the present invention depends on the blending amount of other additives, but it is preferable to use an inorganic acid such as hydrochloric acid with respect to the total amount of the injection solution. , 0.001 to 0.5, more preferably 0.001 to 0.10 w / v%, still more preferably 0.001 to 0.03 w / v%.
- the content of the pH adjuster used in the injection solution used in the present invention depends on the blending amount of other additives, but an organic acid such as citric acid is preferable to the total amount of the injection solution. Is 0 to 8.3 w / v%, more preferably 0 to 1.7 w / v%, even more preferably 0 to 0.56 w / v%, and even more preferably 0 to 0.18 w / v%. Most preferably, it is 0 to 0.08 w / v%.
- the content of the pH adjuster used in the injection solution used in the present invention depends on the blending amount of other additives, but the pH is 6.5 to 7.4 with respect to the total amount of the injection solution.
- an organic acid such as citric acid is preferably 0 to 8.3 w / v%, more preferably 0.01 to 1.7 w / v%, and even more preferably 0.01 to 1.7 w / v%. It is 0.02 to 0.56 w / v%, even more preferably 0.03 to 0.18 w / v%, and most preferably 0.05 to 0.08 w / v%.
- the inorganic alkaline component such as sodium hydroxide is preferably 0 to 2.20 w / v%, more preferably 0.01 to 1.50 w / v%, and even more preferably 0.01 to 0.86 w /. v%, and even more preferably 0.01 to 0.65 w / v%.
- the pH of the injection solution used in the present invention is preferably a pH near neutral to weakly alkaline in consideration of the balance between administration to a living body and stability. More specifically, it is in the range of 6.5 to 8.0, and is preferably pH 7.4 or more to 8.0 or less, particularly from the viewpoint of preventing precipitation under storage in the normal temperature to low temperature range. It is in the range, and particularly preferably around pH 7.5 and 7.8 or less. If necessary, an appropriate pH adjuster, buffer, or the like used in the art may be used for adjusting the pH.
- the injection solution used in the present invention ensures stability including suppression of precipitation under storage in the normal temperature to low temperature range while selecting a free pH between 6.5 and 8.0. It is possible to do.
- an organic acid or a salt thereof as a pH adjuster for an acidic component.
- an organic acid is an essential component as a pH adjuster, for example, at 5 ° C. for 1 week, and in some cases 1 month or more, preferably. Precipitation can be prevented or suppressed even when stored for 3 months or longer.
- a buffer such as a phosphate buffer, Tris-hydrochloric acid buffer, acetate buffer, carbonate buffer, or citrate buffer may be added to the injection solution used in the present invention. These buffers may be useful in stabilizing formulations and reducing irritation.
- the injectable solution of the present invention can contain other components usually used in the art, if necessary, as long as it does not contradict the object of the present invention.
- Such components include additives usually used in liquids, especially aqueous compositions, such as preservatives such as benzalkonium chloride, potassium sorbate, chlorohexidine hydrochloride, stabilizers such as sodium hydroxide, hydroxyethyl cellulose.
- Thickeners such as hydroxypropylmethylcellulose, tonicity agents such as sodium chloride, potassium chloride, glycerin, sucrose, glucose, etc., surfactants such as polysolvate 80, polyoxyethylene hydrogenated castor oil, sodium chloride, potassium chloride, etc.
- examples thereof include isotonic agents such as glycerin and pH adjusters such as sodium hydroxide.
- the injectable solution of the present invention when used as a pharmaceutical product, it may be in the form of an injectable solution for intravenous injection.
- it can be an intravenous drip infusion solution.
- a certain amount of the active ingredient is added as a dispersant (for example, polysolvate 80, polyoxyethylene hydrogenated castor oil 60, polyethylene glycol, carboxymethyl cellulose, sodium alginate, etc.), a preservative (for example, methylparaben, propylparaben, benzyl alcohol). , Chlorobutanol, phenol, etc.), isotonic agents (eg, sodium chloride, glycerin, D-mannitol, glucose, etc.) and aqueous solvents (eg, distilled water for injection, physiological saline, Ringer's solution, etc.) or oily solvents.
- a dispersant for example, polysolvate 80, polyoxyethylene hydrogenated castor oil 60, polyethylene glycol, carboxymethyl cellulose, sodium alginate, etc.
- a preservative for example, methylparaben, propylparaben, benzyl alcohol.
- Chlorobutanol, phenol, etc.
- additives such as a solubilizing agent (for example, sodium salicylate, sodium acetate, etc.), a stabilizer (for example, human serum albumin, etc.), a pain-relieving agent (for example, benzyl alcohol, etc.) may be used. Further, if necessary, an antioxidant, a colorant or the like or other additives may be added.
- a solubilizing agent for example, sodium salicylate, sodium acetate, etc.
- a stabilizer for example, human serum albumin, etc.
- a pain-relieving agent for example, benzyl alcohol, etc.
- an antioxidant, a colorant or the like or other additives may be added.
- a "pharmaceutically acceptable carrier” examples include solvents, solubilizing agents, suspending agents, tonicity agents, surfactants, soothing agents and the like in liquid preparations.
- preparation additives such as preservatives (preservatives) and colorants can be used according to a conventional method.
- solvent for example, alcohol, propylene glycol, macrogol and the like are used.
- solubilizing agent examples include polyethylene glycol, propylene glycol, benzyl benzoate, trisaminomethane, cholesterol, triethanolamine, sodium carbonate, sodium citrate and the like.
- the "suspension agent” include hydrophilic polymers such as polyvinyl alcohol, polyvinylpyrrolidone, sodium carboxymethyl cellulose, methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose.
- Preferable examples of the "isotonic agent” include glucose, sodium chloride, glycerin, and the like.
- the "surfactant” include sodium lauryl sulfate, laurylaminopropionic acid, lecithin, benzalkonium chloride, benzethonium chloride, glycerin monostearate and the like.
- the "painless agent” include, for example, benzyl alcohol and the like.
- Preferable examples of the "preservative" include paraoxybenzoic acid esters, chlorobutanol, benzyl alcohol, phenethyl alcohol, dehydroacetic acid, sorbic acid and the like.
- the method for producing the injection solution used in the present invention is not particularly limited, but as an example, it is prepared by mixing a pH adjuster such as sodium hydroxide, water, and p-boronophenylalanine, and then adding a sugar alcohol. can do.
- a pH adjuster such as sodium hydroxide
- water water
- p-boronophenylalanine a sugar alcohol
- the order in which the components are added may be important for more efficient production.
- a mixed solution of water and a pH adjuster having an alkaline component such as sodium hydroxide is first prepared, and then p-boronophenylalanine is added and stirred. After that, sugar alcohol is added to dissolve it, a pH adjuster of an acidic component is added, and the volume is adjusted with water to prepare an injection solution.
- each component can be efficiently dissolved in a short time, and an excellent injection solution can be efficiently prepared.
- the types and amounts of water, p-boronophenylalanine, sugar alcohol, and pH adjuster at this time are the same as those described in the injection solution for boron neutron capture therapy.
- One of the methods for preventing the precipitation of the injection solution of the present invention is to prevent the precipitation of the injection solution for boron neutron capture therapy, which contains p-boronophenylalanine or a pharmaceutically acceptable salt thereof, a sugar alcohol, and a pH adjuster. It is a method for preventing precipitation, which controls the pH of the injection solution to be more than 7.4 and 8.0 or less.
- the types and amounts of water, p-boronophenylalanine, sugar alcohol, and pH adjuster are the same as those described in the injection solution for BNCT.
- Another aspect of the present invention is a method for preventing precipitation of an injection solution for boron neutron capture therapy, which contains p-boronophenylalanine or a pharmaceutically acceptable salt thereof, a sugar alcohol, and a pH adjuster.
- This is a precipitation prevention method in which the pH adjusting agent contains an organic acid or a salt thereof, and the pH of the injection solution is controlled to 6.5 to 8.0.
- the types and amounts of water, p-boronophenylalanine, sugar alcohol, and pH adjuster at this time are the same as those described in the injection solution for boron neutron capture therapy.
- precipitation prevention is to prevent precipitation when stored at various temperatures. That is, in particular, it includes preventing precipitation when stored at room temperature to low temperature suitable for storage, for example, 30 ° C. or lower, preferably 25 ° C. or lower. For example, although not limited, precipitation may be prevented when stored at around 5 ° C.
- the prevention of precipitation includes, for example, complete suppression of white turbidity by visual inspection, reduction of the degree of white turbidity, extension of time until the appearance of white turbidity, and the like.
- under storage means that the product is stored for at least 6 hours, preferably 24 hours or more, and more preferably 2 days or more. In some cases, it may be stored for a long period of time, for example, one week or one month.
- the injection solution used in the present invention is preferably used as an intravenous drip infusion, and particularly preferably an intravenous drip infusion such as that used for boron neutron capture therapy.
- Neutron capture therapy is a method of treating with strong particle beams (alpha rays, 7Li particles) generated by a nuclear reaction between boron-10 taken up by tumor cells and neutrons. It can be used particularly conveniently for this method.
- the injection solution of the present invention can be administered to a subject or animal in advance, adjusted so that boron-10 collects in the tumor, and then irradiated with an extrathermal neutron beam.
- the injection solution of the present invention may be administered to a subject or animal in advance, adjusted so that boron-10 collects in the tumor, and then irradiated with extrathermal neutron rays while continuing the administration. ..
- the dose of the injection solution of the present invention is not particularly limited, but can be controlled in order to achieve a preferable intracellular boron concentration.
- Such a dose is set according to the type and degree of progression of the tumor to be applied, the age and body weight of the subject, etc., but when the injection solution of the present invention is used for intravenous administration, it is per hour. , 200-500 ml, intravenous drip infusion for 1.5-4.0 hours, preferably 2.0-3.6 hours. It is particularly preferable that the timing of starting administration is continuous from before the start of neutron irradiation to during the irradiation.
- the BPA concentration is preferably adjusted to 150 to 250 mg / kg / hour, more preferably 200 mg / kg / hour, and is not limited. Is administered for 1.5 to 3 hours, more preferably for 2 hours, then decelerated to 80 to 120 mg / kg / hour, more preferably 100 mg / kg / hour, and the decelerated administration is performed. It is also effective to irradiate the extrathermal neutron beam for a maximum of 0.5 to 1.5 hours, preferably a maximum of 1 hour.
- the injection solution used in the present invention is thus preferably used for neutron capture therapy.
- the target disease is not limited, but is preferably solid cancer, and particularly preferably cancer (epithelial tumor) originating from epithelial cells.
- cancer epithelial tumor
- skin cancer including melanoma, lung cancer, breast cancer, stomach cancer, colon cancer, uterine cancer, ovarian cancer, head and neck cancer (oral cancer, laryngeal cancer, pharyngeal cancer, tongue) Cancer etc.
- sarcomas originating from non-epithelial cells can also be targeted.
- osteosarcoma there can be osteosarcoma, chondrosarcoma, rhabdomyosarcoma, leiomyosarcoma, fibrosarcoma, liposarcoma, angiosarcoma.
- brain tumors such as glioma, primary malignant lymphoma of the central nervous system, meningioma, pituitary adenoma, schwannoma, and craniopharyngioma may be the target diseases for treatment.
- primary and single cancers but also cancers that have spread to individual organs, metastatic cancers, and intractable cancers can be targeted.
- the present invention includes each aspect of the method for preventing precipitation of an injection solution as described below.
- a method for preventing precipitation of a boron neutron capture therapy injection solution containing p-boronophenylalanine or a pharmaceutically acceptable salt thereof comprises preparing an injectable solution containing p-boronophenylalanine or a pharmaceutically acceptable salt thereof, a sugar alcohol, and a pH adjuster and having a pH controlled to more than 7.5 and less than 8.0. Precipitation prevention method.
- the injection solution is for intravenous infusion at a rate of 200 to 500 ml per hour for 1.5 to 4.0 hours, preferably 2.0 to 3.6 hours.
- a method for preventing precipitation which comprises preparing an injection solution. (11) The method for preventing precipitation according to (10), wherein the sugar alcohol is sorbitol or mannitol. (12) The method for preventing precipitation according to any one of (10) and (11), wherein the concentration of the sugar alcohol is 2.6 to 6.5 w / v%.
- the content ratio of the sugar alcohol is in the range of 0.9 to 3.0 in terms of molar ratio with respect to the content of p-boronophenylalanine.
- the injection solution is for intravenous infusion at a rate of 200 to 500 ml per hour for 1.5 to 4.0 hours, preferably 2.0 to 3.6 hours.
- stability test 1 a storage test at 40 ° C was performed. In this storage test, each solution was sampled at 40 ° C. ⁇ 2 ° C., 75 ⁇ 5% RH, in a dark place, with a storage device: LH21-13M (manufactured by Nagano Science) for 2 weeks and 4 weeks. BPA concentration measurement, Tyr concentration, Phe concentration, and Ac-BPA concentration (high performance liquid chromatograph Nexera X2 series, manufactured by Shimadzu Corporation) were measured and compared with those at the start of the test.
- the measurement conditions by HPLC are as follows. Column used: Mightysil RP-18GP (5 ⁇ m, 4.6 ⁇ 150 mm) Made by Kanto Chemical Co., Inc. Mobile phase: 0.05 mol / L Sodium dihydrogen phosphate TS (pH 2.5) / Methanol (95: 5) Column temperature: Constant temperature around 40 ° C Flow rate: Approximately 0.8 ml / min Injection volume: 10 ⁇ l Detection wavelength: 223 nm
- Typical examples of the results of stability evaluation 1 are shown in Tables 1 and 2.
- the residual amount of BPA in the table indicates the residual amount of BPA after 4 weeks from storage when the amount of BPA used for production was set to 100% in the stability test 1.
- the initial amount of tyrosine was evaluated as an index showing the state of BPA decomposition in the initial stage due to the coexistence of components other than BPA in the composition. (% of BPA and additives means w / v%)
- the compositions of Examples also showed good stability. Further, when the BPA concentration was 2.5 to 4.0 w / v% and sodium bisulfite was used as an antioxidant, the same good stability was exhibited. Furthermore, when the BPA concentration was 2.5 w / v% and the sorbitol concentration was increased to 5.35 w / v% and 6.5 w / v%, the type and concentration of the antioxidant were verified under the same conditions. Also, a composition showing good stability was obtained.
- the injection solution containing sorbitol or mannitol of the example had a pH of 7.4 to 7.8, was excellent in stability at 40 ° C., and was homogeneous in the solution. It turned out to be excellent.
- an aqueous solution containing 3 w / v% BPA, D-sorbitol, and sodium bisulfite was prepared as follows. That is, first, 0.32 g of sodium hydroxide was added to 43 ml of water and stirred. 1.50 g of BPA was suspended. 1.575 g of D-sorbitol was added, and the mixture was stirred and dissolved. 0.01 g of sodium bisulfite was added, 1 mol / l hydrochloric acid or 1 mol / l citric acid was added in an appropriate amount at room temperature, the pH was adjusted, and water was added to make a total volume of 50 ml.
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Abstract
Description
[1]
p-ボロノフェニルアラニン又はその薬学的に許容される塩を含有するホウ素中性子捕捉療法用注射液剤の析出防止方法であって、
p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有し、pHを7.5超過8.0以下に制御された注射液剤を調製することを包含する、析出防止方法。
[2]
p-ボロノフェニルアラニン又はその薬学的に許容される塩を含有するホウ素中性子捕捉療法用注射液剤の析出防止方法であって、
p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有し、少なくとも1種の有機酸又はその塩を含み、pHを6.5~8.0に制御された注射液剤を調製することを包含する、析出防止方法。
[3]
前記糖アルコールが、ソルビトール又はマンニトールである、[1]又は[2]に記載の析出防止方法。
[4]
前記糖アルコールの濃度が、2.6~6.5w/v%である[1]~[3]のいずれか1項に記載の析出防止方法。
[5]
前記糖アルコールの含有割合が、p-ボロノフェニルアラニンの含有量に対して、モル比で、0.9から3.0までの範囲である、[1]~[4]のいずれか1項に記載の析出防止方法。
[6]
前記有機酸が、クエン酸又は乳酸である、[2]~[5]のいずれか1項に記載の析出防止方法。
[7]
前記有機酸又はその塩の量が、注射液剤の0~8.3w/v%である、[2]~[6]のいずれか1項に記載の析出防止方法。
[8]
前記注射液剤が、静脈注射液剤である、項1~7のいずれか1項に記載の析出防止方法。
(p-ボロノフェニルアラニン又はその薬学的に許容される塩)
本発明で用いられるp-ボロノフェニルアラニンは、特に限定はされないが、化合物中のホウ素原子のうち、ホウ素10の割合が、好ましくは、75%以上であり、より好ましくは、80%以上、さらにより好ましくは、90%以上、特に好ましくは、95%以上である。
本発明に用いられる糖アルコールとしては、医薬品分野において注射剤の成分として用いられるものであれば特に限定されない。糖アルコールとしては、限定はされないが、単糖糖アルコールが好ましく、ソルビトール及び/又はマンニトールが特に好ましい。
本発明に用いられる注射液剤には、任意に抗酸化剤を用いることができる。抗酸化剤としては、医薬品分野において注射剤の成分として用いられるものであれば特に限定されない。抗酸化剤としては、限定はされないが、亜硫酸、亜硫酸水素、ピロ亜硫酸、亜硝酸、アスコルビン酸、L-システイン、チオグリコール酸、及びそれらの塩からなる群より選択される1種以上であることが好ましい。
本発明に用いられる注射液剤は、さらに水を含有する。本発明に用いられる水としては、医薬品分野において注射剤の成分として用いられるものであれば特に限定されない。
本発明の注射液剤の浸透圧比は特に限定されないが、生理食塩水対比で、1.0~1.8の範囲内にあることが好ましい。より好ましくは、1.1~1.5の範囲である。この範囲にある場合には、大量の静脈注射の場合、痛みの軽減、静脈炎発症の回避や投与時間の短縮が可能になる。
本発明に用いられる注射液剤には、必要に応じて、適宜、塩酸、リン酸などの無機酸、水酸化ナトリウム、水酸化カリウムなどのアルカリ性成分などのpH調整剤を加えることができる。さらには、無機酸に加えて、又は無機酸の代わりに、有機酸を使用することも好ましい。有機酸としては、クエン酸、酢酸、トリフルオロ酢酸、フマル酸、マレイン酸、乳酸、酒石酸、又はメタンスルホン酸を使用することが好ましく、クエン酸又は乳酸を使用することがさらに好ましい。
本発明に用いられる注射液剤のpHは、生体への投与と安定性のバランスを考慮して、中性~弱アルカリ性付近のpHであることが好ましい。より具体的には、6.5~8.0の範囲であり、特に、常温から低温域での保存下での析出防止の点からは、好ましくは、pH7.4超過~8.0以下の範囲であり、特に好ましくはpH7.5超過7.8以下付近である。pHの調節には必要に応じて、当該技術分野で用いられる適当なpH調節剤、緩衝剤などを使用してもよい。
本発明に用いられる注射液剤には、必要に応じて、リン酸緩衝液、トリス塩酸緩衝液、酢酸緩衝液、炭酸緩衝液、クエン酸緩衝液等の緩衝剤を加えてもよい。これらの緩衝剤は、製剤の安定化や刺激性の低下に有用な場合がある。
「界面活性剤」として、例えば、ラウリル硫酸ナトリウム、ラウリルアミノプロピオン酸、レシチン、塩化ベンザルコニウム、塩化ベンゼトニウム、モノステアリン酸グリセリン等が挙げられる。
「無痛化剤」の好適な例としては、例えば、ベンジルアルコール等が挙げられる。
本発明に用いられる注射液剤の製造方法としては、特に限定はされないが、一例として、水酸化ナトリウムなどのpH調整剤、水、及びp-ボロノフェニルアラニンを混合した後に、糖アルコールを加え、調製することができる。ここで、調製の際には、より効率の良い製造の為に、成分を加える順番が重要になり得る。特に好ましくは、水と水酸化ナトリウムなどのアルカリ成分のpH調整剤の混合液をまず調製し、次にp-ボロノフェニルアラニンを加えて撹拌する。その後糖アルコールを加えて溶解させ、酸性成分のpH調整剤を入れ、水で容量を合わせて注射液剤を調製することができる。このようなプロトコールに従うことで、各成分を短時間に効率良く溶解でき、優れた注射液剤を効率良く調製することができる。
この時の水、及びp-ボロノフェニルアラニン、糖アルコール、pH調整剤の種類及び量は、ホウ素中性子捕捉療法用注射液剤に記載した量に準じる。
本発明の注射液剤の析出防止方法の1つは、p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有する、ホウ素中性子捕捉療法用注射液剤の析出防止方法であって、該注射液剤のpHを7.4超過8.0以下に制御する、析出防止方法である。ここで、水、p-ボロノフェニルアラニン、糖アルコール、pH調整剤の種類及び量は、BNCT用注射液剤に記載した量に準じる。
(投与)
本発明に用いられる注射液剤の用途としては、点滴静注剤としての利用が好ましく、特にホウ素中性子捕捉療法に用いられるような点滴静注剤であることが好ましい。中性子捕捉療法は、腫瘍細胞に取り込まれたホウ素10と中性子との核反応により発生する強力な粒子線(アルファ線、7Li粒子)によって治療を行う方法であり、本発明に用いられる注射液剤は、この方法に特に好都合に用いることができる。
(1)
p-ボロノフェニルアラニン又はその薬学的に許容される塩を含有するホウ素中性子捕捉療法用注射液剤の析出防止方法であって、
p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有し、pHを7.5超過8.0以下に制御された注射液剤を調製することを包含する、析出防止方法。
(2)
前記pH調整剤が、少なくとも塩酸を含有し、該塩酸の量が、0.001~0.5w/v%である、上記(1)記載の析出防止方法。
(3)
前記糖アルコールが、ソルビトール又はマンニトールである、(1)又は(2)に記載の析出防止方法。
(4)
前記糖アルコールの濃度が、2.6~6.5w/v%である(1)~(3)のいずれか1項に記載の析出防止方法。
(5)
前記糖アルコールの含有割合が、p-ボロノフェニルアラニンの含有量に対して、モル比で、0.9から3.0までの範囲である、(1)~(4)のいずれか1項に記載の析出防止方法。
(6)
少なくとも有機酸又はその塩を含み、該有機酸が、クエン酸又は乳酸である、(1)~(5)のいずれか1項に記載の析出防止方法。
(7)
前記注射液剤が、静脈注射液剤である、(1)~(6)のいずれか1項に記載の析出防止方法。
(8)
前記注射液剤が、頭頸部のがん又は脳腫瘍の治療の為の、BNCT用静脈注射液剤である、(1)~(7)のいずれか1項に記載の析出防止方法。
(9)
前記注射液剤が、1時間当たり、200~500ml、の速度で、1.5~4.0時間の間、好ましくは、2.0~3.6時間の間、静脈に点滴投与するためのものである、(1)~(8)のいずれか1項に記載の析出防止方法。
(10)
p-ボロノフェニルアラニン又はその薬学的に許容される塩を含有するホウ素中性子捕捉療法用注射液剤の析出防止方法であって、
p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有し、少なくとも1種の有機酸又はその塩を含み、pHを6.5~8.0に制御された注射液剤を調製することを包含する、析出防止方法。
(11)
前記糖アルコールが、ソルビトール又はマンニトールである、(10)に記載の析出防止方法。
(12)
前記糖アルコールの濃度が、2.6~6.5w/v%である(10)又は(11)のいずれか1項に記載の析出防止方法。
(13)
前記糖アルコールの含有割合が、p-ボロノフェニルアラニンの含有量に対して、モル比で、0.9から3.0までの範囲である、(10)~(12)のいずれか1項に記載の析出防止方法。
(14)
前記有機酸が、クエン酸又は乳酸である、(10)~(13)のいずれか1項に記載の析出防止方法。
(15)
前記有機酸又はその塩の量が、注射液剤の0~8.3w/v%である、(10)~(14)のいずれか1項に記載の析出防止方法。
(16)
前記注射液剤が、静脈注射液剤である、(10)~(15)のいずれか1項に記載の析出防止方法。
(17)
前記注射液剤が、頭頸部のがん又は脳腫瘍の治療の為の、BNCT用静脈注射液剤である、(10)~(16)のいずれか1項に記載の析出防止方法。
(18)
前記注射液剤が、1時間当たり、200~500ml、の速度で、1.5~4.0時間の間、好ましくは、2.0~3.6時間の間、静脈に点滴投与するためのものである、(10)~(17)のいずれか1項に記載の析出防止方法。
本発明のp-ボロノフェニルアラニン(BPA;ここではL体を使用)を含む注射液剤の製造に先立って、質量数が10のホウ素(ホウ素10)を濃縮した10B96%濃縮ホウ酸(ステラケミファ社製)を使用した。得られた高濃縮のホウ素10を用いて、常法にて、p-ボロノフェニルアラニン(BPA)を製造した。
(BPAソルビトール水溶液の調製)
2.5w/v%~5.0w/v%のBPA、及びD-ソルビトール、亜硫酸水素ナトリウム又はピロ亜硫酸ナトリウムを含む水溶液を次のとおりにして調製した。すなわち、まず、水175mlに水酸化ナトリウム1.05~2.08gを溶かした溶液にBPA5g~10gを懸濁させた。D-ソルビトール5.25~13.0gを加え、撹拌し、溶解した。亜硫酸水素ナトリウム又はピロ亜硫酸ナトリウム0.02gを加えて溶かし、1mol/l塩酸1.22ml(pH7.6の際)又は適量加え、pHを調整し、水を加えて全量200mlにした。ついで、0.2μmのフィルターでろ過した。
ソルビトールの代わりに、マンニトールを用いて、BPAソルビトール水溶液と同様にして、調製した。
ソルビトールに加えてマンニトールを併存させて、BPAソルビトール水溶液と同様にして、水溶液を調製した。
安定性評価は、主に、ICHガイドラインに基づく医薬品苛酷安定性試験の標準的な条件として、以下の機種や条件を用いて行った。
使用カラム:Mightysil RP-18GP (5μm、4.6×150mm)関東化学製
移動相:0.05mol/Lりん酸二水素ナトリウム試液(pH2.5)/メタノール
(95:5)
カラム温度:40℃付近の一定温度
流速:約0.8ml/分
注入量:10μl
検出波長:223nm
(BPAソルビトール水溶液の調製)
3w/v%のBPA、及びD-ソルビトール、亜硫酸水素ナトリウムを含む水溶液を次のとおりにして調製した。すなわち、まず、水87mlに水酸化ナトリウム0.62gを加えて攪拌した。BPA3gを懸濁させた。D-ソルビトールを3.15gを加え、撹拌し、溶解した。亜硫酸水素ナトリウム0.02gを加え、室温で1mol/l塩酸又は1mol/lクエン酸を適量加え、pHを調整し、水を加えて全量100mlにした。
このように調整したBPAソルビトール水溶液を安定性試験2に供した。この試験では、5℃での保存試験に供した。この保存試験では、5℃±3℃/ambH/暗所で静置し、白濁の有無、白濁が起きるまでの時間を測定した。その結果を表3に示す。
Claims (8)
- p-ボロノフェニルアラニン又はその薬学的に許容される塩を含有するホウ素中性子捕捉療法用注射液剤の析出防止方法であって、
p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有し、pHを7.5超過8.0以下に制御された注射液剤を調製することを包含する、析出防止方法。 - p-ボロノフェニルアラニン又はその薬学的に許容される塩を含有するホウ素中性子捕捉療法用注射液剤の析出防止方法であって、
p-ボロノフェニルアラニン又はその薬学的に許容される塩、糖アルコール、及びpH調整剤を含有し、 該pH調整剤として少なくとも1種の有機酸又はその塩を含み、pHを6.5~8.0に制御された注射液剤を調製することを包含する、析出防止方法。 - 前記糖アルコールが、ソルビトール又はマンニトールである、請求項1又は2に記載の析出防止方法。
- 前記糖アルコールの濃度が、2.6~6.5w/v%である請求項1~3のいずれか1項に記載の析出防止方法。
- 前記糖アルコールの含有割合が、p-ボロノフェニルアラニンの含有量に対して、モル比で、0.9から3.0までの範囲である、請求項1~4のいずれか1項に記載の析出防止方法。
- 前記有機酸が、クエン酸又は乳酸である、請求項2~5のいずれか1項に記載の析出防止方法。
- 前記有機酸又はその塩の量を、注射液剤の0~8.3w/v%とする、請求項2~6のいずれか1項に記載の析出防止方法。
- 前記注射液剤が、静脈注射液剤である、請求項1~7のいずれか1項に記載の析出防止方法。
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WO (1) | WO2021049519A1 (ja) |
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US5157149A (en) | 1991-06-04 | 1992-10-20 | The United States Of America As Represented By The United States Department Of Energy | Enantioselective synthesis of L-(-)-4- boronophenylalanine (L-BPA) |
US5492900A (en) | 1993-09-10 | 1996-02-20 | Neutron Technology Corporation | Method for enhancing the solubility of the boron delivery drug, boronophenylalanine (BPA) |
JP2979139B2 (ja) | 1998-03-11 | 1999-11-15 | 東北大学長 | L−パラボロノフェニルアラニンの製造方法 |
JP2000212185A (ja) | 1999-01-14 | 2000-08-02 | Ajinomoto Co Inc | パラボロノフェニルアラニン誘導体の製造方法 |
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WO2004030661A2 (en) * | 2002-10-03 | 2004-04-15 | Psimei Pharmaceuticals Plc | Therapeutic compositions comprising a boron-containing compound |
JP2009051766A (ja) * | 2007-08-27 | 2009-03-12 | Stella Pharma Corp | p−ボロノフェニルアラニンとソルビトールとを含有する液状組成物 |
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JP2013173804A (ja) * | 2013-06-14 | 2013-09-05 | Osaka Prefecture Univ | p−ボロノフェニルアラニンとソルビトールとを含有する液状組成物 |
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2020
- 2020-09-09 KR KR1020227012008A patent/KR20220062368A/ko active Pending
- 2020-09-09 CA CA3151049A patent/CA3151049A1/en active Pending
- 2020-09-09 AU AU2020345320A patent/AU2020345320A1/en active Pending
- 2020-09-09 US US17/753,654 patent/US20220296715A1/en active Pending
- 2020-09-09 JP JP2021545563A patent/JP7618235B2/ja active Active
- 2020-09-09 EP EP20864172.0A patent/EP4029506B1/en active Active
- 2020-09-09 WO PCT/JP2020/034085 patent/WO2021049519A1/ja unknown
- 2020-09-09 CN CN202080064226.1A patent/CN114364401A/zh active Pending
- 2020-09-10 AR ARP200102516A patent/AR119935A1/es not_active Application Discontinuation
- 2020-09-11 TW TW109131210A patent/TW202114716A/zh unknown
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2024
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JPS5345771B2 (ja) | 1974-04-22 | 1978-12-08 | ||
US5157149A (en) | 1991-06-04 | 1992-10-20 | The United States Of America As Represented By The United States Department Of Energy | Enantioselective synthesis of L-(-)-4- boronophenylalanine (L-BPA) |
US5492900A (en) | 1993-09-10 | 1996-02-20 | Neutron Technology Corporation | Method for enhancing the solubility of the boron delivery drug, boronophenylalanine (BPA) |
JP2979139B2 (ja) | 1998-03-11 | 1999-11-15 | 東北大学長 | L−パラボロノフェニルアラニンの製造方法 |
JP2000212185A (ja) | 1999-01-14 | 2000-08-02 | Ajinomoto Co Inc | パラボロノフェニルアラニン誘導体の製造方法 |
US6169076B1 (en) | 1999-03-31 | 2001-01-02 | Glcosyn Pharmaceuticals, Inc. | P-Boronophenylalanine complexes with fructose and related carbohydrates and polyols |
WO2004030661A2 (en) * | 2002-10-03 | 2004-04-15 | Psimei Pharmaceuticals Plc | Therapeutic compositions comprising a boron-containing compound |
JP2009051766A (ja) * | 2007-08-27 | 2009-03-12 | Stella Pharma Corp | p−ボロノフェニルアラニンとソルビトールとを含有する液状組成物 |
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See also references of EP4029506A4 |
Also Published As
Publication number | Publication date |
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EP4029506A4 (en) | 2023-10-11 |
JP7618235B2 (ja) | 2025-01-21 |
AR119935A1 (es) | 2022-01-19 |
TW202114716A (zh) | 2021-04-16 |
AU2020345320A1 (en) | 2022-04-14 |
JPWO2021049519A1 (ja) | 2021-03-18 |
CN114364401A (zh) | 2022-04-15 |
KR20220062368A (ko) | 2022-05-16 |
JP2025011312A (ja) | 2025-01-23 |
US20220296715A1 (en) | 2022-09-22 |
EP4029506B1 (en) | 2025-04-16 |
EP4029506A1 (en) | 2022-07-20 |
CA3151049A1 (en) | 2021-03-18 |
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