WO2012165621A1 - リマプロストとβ-シクロデキストリンを含有する錠剤 - Google Patents
リマプロストとβ-シクロデキストリンを含有する錠剤 Download PDFInfo
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- WO2012165621A1 WO2012165621A1 PCT/JP2012/064297 JP2012064297W WO2012165621A1 WO 2012165621 A1 WO2012165621 A1 WO 2012165621A1 JP 2012064297 W JP2012064297 W JP 2012064297W WO 2012165621 A1 WO2012165621 A1 WO 2012165621A1
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- cyclodextrin
- limaprost
- tablet
- mass
- alphadex
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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
- A61K9/20—Pills, tablets, discs, rods
-
- 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
- A61K31/557—Eicosanoids, e.g. leukotrienes or prostaglandins
- A61K31/5575—Eicosanoids, e.g. leukotrienes or prostaglandins having a cyclopentane, e.g. prostaglandin E2, prostaglandin F2-alpha
-
- 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
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
- A61K47/40—Cyclodextrins; Derivatives thereof
-
- 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
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/205—Polysaccharides, e.g. alginate, gums; Cyclodextrin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
Definitions
- the present invention relates to a tablet containing limaprost and ⁇ -cyclodextrin.
- Limaprost is known as a prophylactic and / or therapeutic agent for peripheral circulatory disturbance, and is particularly useful for improving symptoms such as obstructive thromboangiitis and lumbar spinal stenosis, which are chronic diseases.
- Limaprost is hygroscopic and easily absorbs moisture and decomposes. Therefore, commercially available Limaprost Alphadex tablets are packed in an aluminum bag after PTP packaging to avoid the influence of humidity.
- stable tablets containing limaprost include (1) a lyophilized product containing limaprost alphadex ( ⁇ -cyclodextrin inclusion body of limaprost) and glucans, and (2) an excipient. Furthermore, it may contain glucans, the pharmaceutical composition is 100% by mass, the content of glucans is 1 to 15% by mass, and the water activity value is 0.2 or less at 25 ° C., stable.
- a pharmaceutical composition for oral administration with reduced adhesion has been reported (see Patent Document 1).
- cyclodextrins are generally used for the purpose of solubilization of compounds, masking of bitterness or stabilization.
- cyclodextrin is dissolved in an aqueous solution together with the active ingredient, and the active ingredient is stabilized by inclusion of the active ingredient.
- a stabilizing effect is not always obtained by inclusion with cyclodextrin.
- Limaprost Alphadex is a compound in which Limaprost is clathrated with ⁇ -cyclodextrin, but even when Limaprost crystals are clathrated with ⁇ -cyclodextrin, the degradation of Limaprost is not greatly suppressed.
- an emulsification method for example, a certain amount of the active ingredient is added to a 20-50% suspension of cyclodextrin and emulsified with a homogenizer
- a saturated aqueous solution method for example, The main drug is stirred and mixed in a saturated aqueous solution of cyclodextrin for 30 minutes to several days, and the precipitated clathrate is dried by evaporating water or lowering the temperature and taking out the precipitate)
- a mixed pulverization method for example, cyclodextrin and Four methods are known (non-patent document 1), in which the main drug is put in a vibration mill and pulverized).
- Patent Document 2 it has been reported that stability is improved by adding ⁇ -cyclodextrin to pravastatin.
- This patent document includes a step of applying a physical force by mixing and grinding ⁇ -cyclodextrin and pravastatin so that ⁇ -cyclodextrin includes pravastatin, and then kneading with the solution.
- cyclodextrin as an additive for the production of rapidly disintegrating tablets in the oral cavity.
- a rapidly disintegrating tablet in the oral cavity characterized in that 70% by mass or more of the tablet is cyclodextrin has been reported (see Patent Document 3).
- the cyclodextrin in this patent document includes ⁇ -cyclodextrin.
- cyclodextrin as an additive to improve the stability of the active ingredient.
- an object of the present invention is to provide a limaprost-containing tablet that is very stable against humidity.
- an object of the present invention is to provide a limaprost-containing tablet having a decomposition product formation rate of 5% or less after storage for 30 days or one month under conditions of a temperature of 30 ° C. and a relative humidity of 75%.
- the present inventors have intensively studied to find a more stable limaprost-containing tablet than the existing limaprost-containing tablets.
- the stability of limaprost is improved. It was found that the performance is improved. It was also found that the stability of limaprost to humidity was significantly improved by adding ⁇ -cyclodextrin as an additive without dissolving limaprost in the solvent together with ⁇ -cyclodextrin. This is surprising, and it is not theoretically constrained according to conventional knowledge.
- limaprost may be used as limaprost alphadex already encapsulated with ⁇ -cyclodextrin, but the stability is improved by adding cyclodextrin to the compound already encapsulated with cyclodextrin.
- stabilization of limaprost would have been attributed to inclusion by cyclodextrin or the like.
- the present inventors have found that a tablet containing limaprost and ⁇ -cyclodextrin is significantly improved in humidity stability as compared with an existing limaprost-containing tablet.
- a tablet containing limaprost and ⁇ -cyclodextrin comprising 30 to 99% by mass of ⁇ -cyclodextrin, based on 100% by mass of the whole tablet, 2.
- the tablet according to 1 above containing 50 to 95% by mass of ⁇ -cyclodextrin, based on 100% by mass of the whole tablet, 3.
- the tablet of any one of said 1 or 2 which may contain 0.0165 to 2.5 mass% of glucans, 4).
- Limaprost is contained in the tablet as limaprost alphadex, wherein the tablet contains at least (1) a lyophilized body containing limaprost alphadex and (2) a mixture of ⁇ -cyclodextrin.
- the tablet according to 4 above which comprises a step of mixing and adding ⁇ -cyclodextrin of (2) in the absence of a solvent, 6). 6.
- the tablet according to 5 above further containing ⁇ -cyclodextrin in the lyophilized product, 7.
- the tablet according to 6 above, wherein ⁇ -cyclodextrin in the lyophilized product is 0.1 to 1% by mass, based on 100% by mass of the whole tablet, 8).
- the tablet according to any one of 4 to 7 further comprising glucan in a lyophilized body, 9.
- tablets containing 0.0165 to 1.0% by mass of glucans 13.
- the tablet After storage for 1 month under conditions of a temperature of 30 ° C. and a relative humidity of 75%, the tablet is substantially free of 17S, 20-dimethyl-trans- ⁇ 2 -PGA 1 or 100% of the entire tablet
- Limaprost means the following formula (I)
- the chemical name is (E) -7-[(1R, 2R, 3R) -3-hydroxy-2-[(3S, 5S)-(E) -3-hydroxy-5-methyl- 1-nonenyl] -5-oxocyclopentyl] -2-heptenoic acid (Registry No. 74397-12-9).
- limaprost may be contained in the form of inclusion with ⁇ -cyclodextrin.
- the ⁇ -cyclodextrin inclusion compound of limaprost has the following formula (II) (Wherein n represents an integer).
- the general name is (E) -7-[(1R, 2R, 3R) -3-hydroxy-2-[(3S, 5S)-(E) -3-hydroxy-5-methyl-1-nonenyl] -5 Oxocyclopentyl] -2-heptenoic acid ⁇ -cyclodextrin inclusion compound (Registry No.
- limaprost as an ⁇ -cyclodextrin inclusion compound of limaprost represented by the above formula (II), that is, limaprost alphadex.
- the tablet of the present invention contains about 5 to 10 ⁇ g of limaprost per tablet.
- limaprost is contained as limaprost alphadex, it is preferably contained in an amount of about 5 to 10 ⁇ g per tablet in terms of limaprost.
- Limaprost and Limaprost Alphadex are known and can be produced by a known method, for example, the method described in JP-A No. 55-100300.
- the following product is obtained as the decomposition product: Represented by the formula: 17S, 20-dimethyl-trans- ⁇ 2 -PGA 1 (hereinafter abbreviated as 11-deoxy form), or 17S, 20-dimethyl-trans- ⁇ 2 -8-iso-PGE 1 (hereinafter abbreviated as 8-iso form) and the like are produced.
- 11-deoxy form is mainly produced as a decomposition product.
- the amount of 11-deoxy derivative produced is about 10% or less, preferably about 8% or less, more than the detection limit, More preferably, it can be suppressed to not less than the detection limit and not more than about 5%.
- the amount of 11-deoxy compound produced can be kept low. Specifically, the amount of 11-deoxy compound produced after storage for 30 days or 1 month at a temperature of 30 ° C.
- a relative humidity of 75% is preferably more than the detection limit and not more than about 5%, more preferably more than the detection limit. It can be suppressed to about 3.5% or less. Further, at a temperature of 60 ° C., the amount of 11-deoxy compound produced after storage for 30 days or 1 month is preferably more than the detection limit and about 5% or less, more preferably more than the detection limit and about 3.5% or less. Can be suppressed.
- the production rate of 11-deoxy form can be represented, for example, by the ratio (mass ratio) of the amount of 11-deoxy form in the composition to the total amount of limaprost, 11-deoxy form, and 8-iso form.
- the production rate of the 11-deoxy form can be calculated by quantifying limaprost and the degradation products of the limaprost (8-iso form, 11-deoxy form) and taking the sum of the limaprost and the degradation product as 100.
- the amount of limaprost, 11-deoxy isomer, and 8-iso isomer can be measured using a known analysis method (for example, high performance liquid chromatography, gas chromatography, thin layer chromatography, etc.).
- the measurement is preferably performed using a high performance liquid chromatographic method.
- the high performance liquid chromatographic method By using the high performance liquid chromatographic method, the amount of limaprost, 11-deoxy isomer, and 8-iso isomer can be measured with high sensitivity using the same sample under the same conditions.
- the high performance liquid chromatographic method is performed by a known method.
- the test is performed under the following high performance liquid chromatography (HPLC) test conditions.
- HPLC high performance liquid chromatography
- HPLC test conditions Detector: ultraviolet absorptiometer (measurement wavelength: 215 nm); Column: a stainless tube having an inner diameter of about 5 mm and a length of 10 to 20 cm is packed with 3 to 5 ⁇ m of octadecylsilylated silica gel for liquid chromatography; Mobile phase: 0.02 M potassium dihydrogen phosphate (pH 4.3) / acetonitrile / isopropanol mixture (9: 5: 2); Flow rate: Adjust so that the retention time of limaprost is about 12 minutes; Internal standard solution: A solution of testosterone in acetonitrile (13 ⁇ 20000).
- the amount of the decomposition product can be measured by a known method other than the high performance liquid chromatography method. Evaluation can be performed using a method (for example, an external standard method). Using a method other than the above high-performance liquid chromatographic method, for example, in a stability test at a temperature of 30 ° C. and a relative humidity of 75%, the amount of 11-deoxy compound produced after storage for 30 days or 1 month exceeds 5%. Even if the amount of the 11-deoxy product is not less than the detection limit and not more than about 5% using the above method, it is included in the present invention. Further, those in which the 11-deoxy form cannot be substantially measured are also included in the present invention.
- ⁇ -cyclodextrin is particularly used among cyclodextrins such as ⁇ -cyclodextrin, ⁇ -cyclodextrin, ⁇ -cyclodextrin and hydroxypropyl ⁇ -cyclodextrin.
- limaprost or an inclusion compound of limaprost with ⁇ -cyclodextrin (Limaprost Alphadex) and ⁇ -cyclodextrin may be mixed by a known method.
- ⁇ -cyclodextrin when ⁇ -cyclodextrin is mixed, a solvent or the like is not added, and ⁇ -cyclodextrin may be mixed and added in the absence of a solvent.
- ⁇ -cyclodextrin may be blended after lyophilized containing limaprost or limaprost alphadex and ⁇ -cyclodextrin.
- a lyophilized product containing limaprost or limaprost alphadex and ⁇ -cyclodextrin is prepared by, for example, dissolving limaprost or limaprost alphadex and ⁇ -cyclodextrin in a solvent (eg, water, an organic solvent (eg, ethanol, acetone, etc.)).
- a solvent eg, water, an organic solvent (eg, ethanol, acetone, etc.)
- ⁇ -cyclodextrin may be blended by adding ⁇ -cyclodextrin to a freeze-dried product containing limaprost or limaprost alphadex and ⁇ -cyclodextrin.
- ⁇ -cyclodextrin may be further mixed.
- ⁇ -cyclodextrin may be blended by any method, but when mixing ⁇ -cyclodextrin, water or an organic solvent is not added, and ⁇ -cyclodextrin is added in the absence of a solvent. It is preferable to include a step of mixing and adding cyclodextrin, and it is particularly preferable to pulverize the lyophilized product containing limaprost or limaprost alphadex and ⁇ -cyclodextrin, and further mix ⁇ -cyclodextrin.
- the content of ⁇ -cyclodextrin is preferably about 30% to 99% by weight, more preferably about 50% to 95% by weight, and still more preferably about 50%. Mass% to 85 mass%.
- the blending amount of ⁇ -cyclodextrin is the total amount of ⁇ -cyclodextrin added at the time of producing the lyophilized product and ⁇ -cyclodextrin to be mixed and added, that is, ⁇ -cyclodextrin contained in the whole tablet. Refers to the total amount.
- ⁇ -cyclodextrin used to produce the freeze-dried product containing limaprost and ⁇ -cyclodextrin is The amount may be small, and the total weight of the tablet is about 0.1 to 1% by mass, preferably about 0.1 to 0.5% by mass, with 100% by mass.
- the ⁇ -cyclodextrin to be mixed and added is preferably about 30 to 99% by mass, preferably about 50 to 95% by mass, more preferably about 50 to 85% by mass, with the total mass of the tablet being 100% by mass.
- glucan means a glucan or a product obtained by treating glucan with a chemical or enzymatic method.
- Glucan is a general term for polysaccharides composed of D-glucose, and is divided into ⁇ -glucan and ⁇ -glucan.
- ⁇ -glucan has ⁇ 1 ⁇ 4 glucoside bond (eg starch, glycogen, etc.), has ⁇ 1 ⁇ 6 glucoside bond (dextran, etc.), or has ⁇ 1 ⁇ 4 and ⁇ 1 ⁇ 6 glucoside bond (eg, , Pullulan, etc.).
- Representative examples of ⁇ -glucan include cellulose having a ⁇ 1 ⁇ 4 glucoside bond. Examples of those obtained by treating glucan with a chemical or enzymatic method include those obtained by treating starch with a chemical or enzymatic method, such as dextrin or pregelatinized starch.
- glucans include dextran (for example, dextran, dextran 40, dextran 70, etc.), dextrin, pullulan, corn starch, potato starch, wheat starch, rice starch, pregelatinized starch and the like. Is preferred.
- a method for blending glucans they may be simply mixed, for example, limaprost, ⁇ -cyclodextrin and glucans are dissolved in a solvent (for example, water, an organic solvent (for example, ethanol, acetone, etc.), It can also mix
- a solvent for example, water, an organic solvent (for example, ethanol, acetone, etc.
- the amount of glucans blended may be very small, and the total tablet is about 100% by mass. 0.0165 to 2.5% by mass, preferably about 0.0165 to 1.0% by mass, more preferably about 0.08 to 1.0% by mass is preferable.
- the hardness of the lyophilized product is increased and the moldability of the tablet is improved.
- the tablet of the present invention may further contain an additive in addition to the above-mentioned additives.
- the additive may be any one that is generally used when manufacturing tablets, such as excipients, lubricants, disintegrants, fluidizing agents, binders, flavoring agents, flavoring agents, interfaces.
- An activator, a fragrance, a colorant, an antioxidant, a masking agent, an antistatic agent, a wetting agent, and the like can be appropriately used in combination of one or more.
- excipients include glucose, fructose, maltose, lactose (lactose hydrate, spray-dried lactose, fluidized bed granulated lactose, isomerized lactose, reduced lactose, etc.), sucrose, D-mannitol, erythritol, multi Examples include tall, xylitol, palatinose, trehalose, sorbitol, crystalline cellulose, talc, anhydrous silicic acid, anhydrous calcium phosphate, precipitated calcium carbonate, and calcium silicate.
- Examples of the lubricant include magnesium stearate, calcium stearate, sucrose fatty acid ester, sodium stearyl fumarate, stearic acid, talc, polyethylene glycol and the like.
- Examples of the disintegrant include low-substituted hydroxypropylcellulose, carmellose, carmellose calcium, sodium carboxymethyl starch, croscarmellose sodium, crospovidone, hydroxypropyl starch, and corn starch.
- Examples of the fluidizing agent include light anhydrous silicic acid, talc, hydrous silicon dioxide and the like.
- binder examples include hydroxypropylcellulose, hydroxypropylmethylcellulose, povidone, polyvinylpyrrolidone, methylcellulose, polyvinyl alcohol, carboxymethylcellulose, sodium alginate, gum arabic powder, gelatin and the like. May be used.
- the corrigent include sucrose, D-sorbitol, xylitol, citric acid, ascorbic acid, tartaric acid, malic acid, aspartame, acesulfame potassium, thaumatin, sodium saccharin, dipotassium glycyrrhizin, sodium glutamate, 5′-sodium inosinate, 5 ′ -Sodium guanylate and the like.
- Examples of the flavoring agent include trehalose, malic acid, maltose, potassium gluconate, anise essential oil, vanilla essential oil, cardamom essential oil and the like.
- Examples of the surfactant include polysorbate (polysorbate 80 and the like), polyoxyethylene / polyoxypropylene copolymer, sodium lauryl sulfate, and the like.
- Examples of the colorant include titanium oxide, food yellow No. 5, food blue No. 2, iron sesquioxide, yellow iron sesquioxide, and the like.
- Examples of the antioxidant include sodium ascorbate, L-cysteine, sodium sulfite, vitamin E and the like.
- Examples of the masking agent include titanium oxide.
- Examples of the antistatic agent include talc and titanium oxide.
- Examples of the wetting agent include polysorbate 80, sodium laurate sulfate, sucrose fatty acid ester, macrogol, and hydroxypropyl cellulose (HPC).
- the tablet of the present invention can be produced by the following method.
- pulverized lyophilized products containing Limaprost, Limaprost, Alphadex or Limaprost can be used in rolling granulators, stirring granulators, fluidized granulators, centrifugal rolling granulators, dry granulators, etc.
- the additives are mixed evenly if necessary, and compression-molded with a rotary tableting machine etc. to obtain uncoated tablets, which are used as tablets. It may be used, and if necessary, it may be coated with a coating base.
- the tablet of the present invention also has an advantage that there is no problem in moldability despite containing a relatively large amount of ⁇ -cyclodextrin which may cause disintegration in the tablet.
- the lubricant can be mixed by an internal lubrication method or an external lubrication method.
- the tablet of the present invention may be dried before tableting or after tableting.
- the method for drying the tablet is preferably hot-air drying, reduced-pressure drying, or heating under reduced pressure.
- the method for drying the tablet is preferably vacuum drying or heat vacuum drying.
- the tablet of the present invention is useful for the treatment of peripheral circulatory disorders such as obstructive thromboangiitis or lumbar spinal stenosis.
- the tablet of the present invention is very stable in humidity and can suppress the production of degradation products of limaprost, so that it can be stored for a long period of time, and there is no problem in moldability to tablets. . Therefore, the tablet of the present invention can be clinically provided in a state of being packaged with other drugs.
- 0.664 g of the above lyophilized powder was mixed with 20 g of carmellose, 30 g of ⁇ -cyclodextrin, 50 g of lactose, 0.2 g of light anhydrous silicic acid, and 2 g of stearic acid, and a rotary tableting machine (Kikusui Seisakusho Co., Ltd.)
- the tablet was tableted at a tableting pressure of 800 to 1000 kg / cm 2 (1 tablet 102.9 mg, 6.5 mm ⁇ ) to obtain 1000 tablets containing 5 ⁇ g of limaprost per tablet.
- Magnesium stearate was sprayed onto the tablet press using an external lubrication device (Kikusui Seisakusho Co., Ltd.).
- ⁇ -cyclodextrin content 60% tablet> The same lyophilized powder as in Formulation Example 1 (0.664 g) is mixed with 20 g of carmellose, 60 g of ⁇ -cyclodextrin, 20 g of lactose and 0.2 g of light anhydrous silicic acid, and a rotary tableting machine (manufactured by Kikusui Seisakusho). ) was used to tablet at a tableting pressure of 800 to 1000 kg / cm 2 (1 tablet 100.9 mg, 6.5 mm ⁇ ) to obtain 1000 tablets containing 5 ⁇ g of limaprost per tablet. Magnesium stearate was sprayed onto the tablet press using an external lubrication device (Kikusui Seisakusho Co., Ltd.).
- ⁇ -cyclodextrin content 70% tablet> The same lyophilized powder as in Formulation Example 1 (0.664 g) is mixed with 20 g of carmellose, 70 g of ⁇ -cyclodextrin, 10 g of lactose and 0.2 g of light anhydrous silicic acid, and a rotary tableting machine (manufactured by Kikusui Seisakusho Co., Ltd.). ) was used to tablet at a tableting pressure of 800 to 1000 kg / cm 2 (1 tablet 100.9 mg, 6.5 mm ⁇ ) to obtain 1000 tablets containing 5 ⁇ g of limaprost per tablet. Magnesium stearate was sprayed onto the tablet press using an external lubrication device (Kikusui Seisakusho Co., Ltd.).
- ⁇ -cyclodextrin content 80% tablet> Using 0.664 g of lyophilized powder similar to Formulation Example 1 mixed with 20 g of carmellose, 80 g of ⁇ -cyclodextrin and 0.2 g of light anhydrous silicic acid, and using a rotary tableting machine (manufactured by Kikusui Seisakusho). By tableting at a tableting pressure of 800 to 1000 kg / cm 2 (1 tablet 100.9 mg, 6.5 mm ⁇ ), 1000 tablets containing 5 ⁇ g of limaprost per tablet were obtained. Magnesium stearate was sprayed onto the tablet press using an external lubrication device (Kikusui Seisakusho Co., Ltd.).
- ⁇ -cyclodextrin content 90% tablet> Using 0.664 g of freeze-dried powder similar to Formulation Example 1 mixed with 10 g of carmellose, 90 g of ⁇ -cyclodextrin, and 0.2 g of light anhydrous silicic acid, and using a rotary tableting machine (manufactured by Kikusui Seisakusho). By tableting at a tableting pressure of 800 to 1000 kg / cm 2 (1 tablet 100.9 mg, 6.5 mm ⁇ ), 1000 tablets containing 5 ⁇ g of limaprost per tablet were obtained. Magnesium stearate was sprayed onto the tablet press using an external lubrication device (Kikusui Seisakusho Co., Ltd.).
- Comparative Formulation Example 1 was produced in the same manner as in Example 13 of Japanese Patent No. 3646310.
- ⁇ Comparative formulation example 2 ⁇ -cyclodextrin content 0.2% (mixed addition amount 0%) tablets> 0.664 g of freeze-dried powder similar to Formulation Example 1 was mixed with 20 g of carmellose, 80 g of lactose and 0.2 g of light anhydrous silicic acid, and tableted using a rotary tableting machine (manufactured by Kikusui Seisakusho Co., Ltd.). By tableting at a pressure of 800 to 1000 kg / cm 2 (1 tablet 102.9 mg, 6.5 mm ⁇ ), 1000 tablets containing 5 ⁇ g of limaprost per tablet were obtained.
- Formulation Examples 1-6 and Comparative Formulation Examples 1 and 2 are shown in the following table. About 100 tablets of each formulation were filled in a glass bottle, and placed in a stability tester with a temperature of 30 ° C. and a relative humidity of 75% while being opened, and periodically sampled to evaluate the tablets. The production rate of the degradation product (11-deoxy form) of limaprost was analyzed by high performance liquid chromatography (HPLC).
- HPLC high performance liquid chromatography
- the production rate of the decomposition product was calculated with the sum of limaprost and decomposition product being 100.
- the analysis results are shown below. Tablets described in Example 13 of Patent Document 1 that do not contain ⁇ -cyclodextrin (Comparative Preparation Example 1), and ⁇ -cyclodine in the same amount as ⁇ -cyclodextrin encapsulating limaprost in a lyophilized product Compared with Comparative Formulation Example 2 containing dextrin, the tablet (Formulation Example 1-6) to which 30% or more of ⁇ -cyclodextrin was added as an additive was remarkably improved in stability.
- the limaprost-containing tablet of the present invention is very stable against humidity. Therefore, it can be packaged with other preparations and can be provided clinically without deterioration in quality, which is very useful as a medicine.
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Abstract
Description
すなわち、本発明の目的は、湿度に対して非常に安定なリマプロスト含有錠を提供することにある。具体的には、温度30℃、相対湿度75%の条件下において、30日又は1か月間の保存後、分解生成物の生成率が5%以下のリマプロスト含有錠を提供ことにある。
2.錠剤全体を100質量%として、50乃至95質量%のβ-シクロデキストリンを含有する前記1記載の錠剤、
3.さらにグルカン類を0.0165乃至2.5質量%含有していてもよい前記1乃至2のいずれか1項記載の錠剤、
4.リマプロストが、リマプロスト アルファデクスとして前記錠剤に含有され、ここで当該錠剤は、少なくとも(1)リマプロスト アルファデクスを含有する凍結乾燥体と(2)β-シクロデキストリンとの混合物を含有する前記1乃至3のいずれか1項記載の錠剤、
5.溶媒非存在下で(2)のβ-シクロデキストリンを混合添加する工程を含んで製造される前記4記載の錠剤、
6.凍結乾燥体中にさらにβ-シクロデキストリンを含有する前記5記載の錠剤、
7.錠剤全体を100質量%として、凍結乾燥体中のβ-シクロデキストリンが0.1乃至1質量%である前記6記載の錠剤、
8.凍結乾燥体中にさらにグルカン類を含有する前記4乃至7のいずれか1項記載の錠剤、
9.リマプロスト アルファデクスとグルカン類が1:0.1乃至15の比率で含有される前記8記載の錠剤、
10.リマプロスト アルファデクスとグルカン類が1:0.1乃至6の比率で含有される前記8記載の錠剤、
11.リマプロスト アルファデクス、β-シクロデキストリンおよびグルカン類を含有し、錠剤全体を100質量%として、β-シクロデキストリンを30乃至99質量%、グルカン類を0.0165乃至2.5質量%含有する錠剤、
12.(1)リマプロスト アルファデクスおよび、β-シクロデキストリンおよびグルカン類を含有する凍結乾燥体と(2)β-シクロデキストリンとの混合物を含有し、錠剤全体を100質量%として、β-シクロデキストリンを30乃至99質量%、グルカン類を0.0165乃至1.0質量%含有する錠剤、
13.温度30℃ 、相対湿度75%の条件下における1か月間の保存後において、錠剤中に17S,20-ジメチル-トランス-Δ2-PGA1が実質的に含まれないか、または錠剤全体を100%として、17S,20-ジメチル-トランス-Δ2-PGA1が5%以下である前記1乃至12いずれか1項記載の錠剤
に関する。
本明細書において、リマプロストとは、下記式(I)
11-デオキシ体の生成率は、リマプロスト並びにリマプロストの分解生成物(8-イソ体、11-デオキシ体)の定量を行い、リマプロストと分解生成物の和を100として算出することができる。
リマプロストおよび11-デオキシ体、8-イソ体の量は、公知の分析方法(例えば、高速液体クロマトグラフ法、ガスクロマトグラフ法、薄層クロマトグラフ法等)を用いて測定することができるが、特に、高速液体クロマトグラフ法を用いて測定することが好ましい。高速液体クロマトグラフ法を用いることで、リマプロストおよび11-デオキシ体、8-イソ体の量を、同一の条件で、かつ同一のサンプルを用いて高感度で測定することができる。高速液体クロマトグラフ法は、公知の方法によって行われる。
検出器:紫外吸光光度計(測定波長:215nm);
カラム:内径約5mm、長さ10から20cmのステンレス管に3から5μmの液体クロマトグラフ用オクタデシルシリル化シリカゲルを充填する;
移動相:0.02Mリン酸二水素カリウム(pH4.3)/アセトニトリル/イソプロパノール混液(9:5:2);
流量:リマプロストの保持時間が約12分になるように調整する;
内部標準溶液:テストステロンのアセトニトリル溶液(13→20000)。
β-シクロデキストリンの配合方法は、リマプロスト又はα-シクロデキストリンによるリマプロストの包接化合物(リマプロスト アルファデクス)とβ-シクロデキストリンを公知の方法で混合してもよい。本発明においては、β-シクロデキストリンを混合する際、溶媒などは添加せず、溶媒非存在下でβ-シクロデキストリンを混合添加すればよい。
また、β-シクロデキストリンの配合方法は、リマプロスト又はリマプロスト アルファデクスおよびβ-シクロデキストリンを含有する凍結乾燥体とした後で粉砕して用いてもよい。リマプロスト又はリマプロスト アルファデクスおよびβ-シクロデキストリンを含有する凍結乾燥体は、例えばリマプロスト又はリマプロスト アルファデクスとβ-シクロデキストリンを溶媒(例えば水、有機溶媒(例えば、エタノール、アセトン等)等)に溶解し、常法に従って製造することができる。また、β-シクロデキストリンの配合方法は、リマプロスト又はリマプロスト アルファデクスおよびβ-シクロデキストリンを含有する凍結乾燥体に、さらにβ-シクロデキストリンを混合添加してもよく、例えば、上記の方法で製造した凍結乾燥体を粉砕した後、さらにβ-シクロデキストリンを混合すればよい。
本発明におけるβ-シクロデキストリンの配合方法としては、どのような方法で配合してもよいが、β-シクロデキストリンを混合する際、水や有機溶媒などは添加せず、溶媒非存在下でβ-シクロデキストリンを混合添加する工程を含むことが好ましく、特に、リマプロスト又はリマプロスト アルファデクスおよびβ-シクロデキストリンを含有する凍結乾燥体を粉砕し、さらにβ-シクロデキストリンを混合するのが好ましい。
本発明の錠剤は、打錠前もしくは打錠後に乾燥させてもよい。錠剤を乾燥する方法として好ましくは熱風乾燥、減圧乾燥または加熱減圧乾燥である。
本発明の錠剤は、末梢循環障害、例えば閉塞性血栓血管炎または腰部脊柱管狭窄症等の治療に有用である。
(1)凍結乾燥体の製造
精製水37.5 gに、リマプロスト アルファデクスを1 g溶解し、さらにデキストラン40を7 g溶解した。この液を金属のトレーに移し、常法に従い凍結乾燥した。凍結乾燥後、乳鉢で粉砕し、篩(42号篩)で篩過し、凍結乾燥体粉末を得た。
上記のリマプロスト アルファデクス/デキストラン40凍結乾燥体(200 mg)と各種添加剤(15 g)を乳鉢で混合後、1 gずつガラスビンに小分けした。減圧乾燥機を用いて、小分けした試料を乾燥後(50℃、12時間以上)、サンプルを開栓のまま、温度30℃、相対湿度75%の安定試験機に設置し、定期的にサンプリングして評価した。
リマプロストの分解生成物(11-デオキシ体)の生成率を高速液体クロマトグラフィー(HPLC)で分析した。
したがって、β-シクロデキストリンとリマプロストとの混合粉末において、リマプロストの安定性が向上することが示された。
<製剤例1:β-シクロデキストリン含量30%錠>
精製水62.25gに、リマプロスト アルファデクスを1.67g溶解し、β-シクロデキストリン1.67g加えて溶解し,さらにデキストラン40を3.32g溶解した。この液を金属のトレーに移し、常法に従い凍結乾燥した。凍結乾燥後、乳鉢で粉砕し、篩(30号篩)で篩過し、凍結乾燥体粉末を得た。
製剤例1と同様の凍結乾燥体粉末0.664gにカルメロースを20g、β-シクロデキストリンを50g、乳糖を30g、軽質無水ケイ酸を0.2g混合し、ロータリー式打錠機(菊水製作所(株)製)を用いて、打錠圧800~1000kg/cm2で打錠(1錠100.9mg、6.5mmφ)することにより、1錠当りリマプロストを5μg含有する錠剤1000錠を得た。ステアリン酸マグネシウムは外部滑沢装置(菊水製作所(株)製)を用い打錠機に噴霧した。
製剤例1と同様の凍結乾燥体粉末0.664gにカルメロースを20g、β-シクロデキストリンを60g、乳糖を20g、軽質無水ケイ酸を0.2g混合し、ロータリー式打錠機(菊水製作所(株)製)を用いて、打錠圧800~1000kg/cm2で打錠(1錠100.9mg、6.5mmφ)することにより、1錠当りリマプロストを5μg含有する錠剤1000錠を得た。ステアリン酸マグネシウムは外部滑沢装置(菊水製作所(株)製)を用い打錠機に噴霧した。
製剤例1と同様の凍結乾燥体粉末0.664gにカルメロースを20g、β-シクロデキストリンを70g、乳糖を10g、軽質無水ケイ酸を0.2g混合し、ロータリー式打錠機(菊水製作所(株)製)を用いて、打錠圧800~1000kg/cm2で打錠(1錠100.9mg、6.5mmφ)することにより、1錠当りリマプロストを5μg含有する錠剤1000錠を得た。ステアリン酸マグネシウムは外部滑沢装置(菊水製作所(株)製)を用い打錠機に噴霧した。
製剤例1と同様の凍結乾燥体粉末0.664gにカルメロースを20g、β-シクロデキストリンを80g、軽質無水ケイ酸を0.2g混合し、ロータリー式打錠機(菊水製作所(株)製)を用いて、打錠圧800~1000kg/cm2で打錠(1錠100.9mg、6.5mmφ)することにより、1錠当りリマプロストを5μg含有する錠剤1000錠を得た。ステアリン酸マグネシウムは外部滑沢装置(菊水製作所(株)製)を用い打錠機に噴霧した。
製剤例1と同様の凍結乾燥体粉末0.664gにカルメロースを10g、β-シクロデキストリンを90g、軽質無水ケイ酸を0.2g混合し、ロータリー式打錠機(菊水製作所(株)製)を用いて、打錠圧800~1000kg/cm2で打錠(1錠100.9mg、6.5mmφ)することにより、1錠当りリマプロストを5μg含有する錠剤1000錠を得た。ステアリン酸マグネシウムは外部滑沢装置(菊水製作所(株)製)を用い打錠機に噴霧した。
特許第3646310号の実施例13と同様の方法にて、比較製剤例1を製造した。
製剤例1と同様の凍結乾燥体粉末0.664gにカルメロースを20g、乳糖を80g、軽質無水ケイ酸を0.2g混合し、ロータリー式打錠機(菊水製作所(株)製)を用いて、打錠圧800~1000kg/cm2で打錠(1錠102.9mg、6.5mmφ)することにより,1錠当りリマプロストを5μg含有する錠剤1000錠を得た。
製剤例1と同様の方法を用いて、以下の組成の様々なデキストラン含量の錠剤、製剤例7~13を製造した。
Claims (13)
- リマプロストおよびβ-シクロデキストリンを含有する錠剤であって、錠剤全体を100質量%として、30乃至99質量%のβ-シクロデキストリンを含有する錠剤。
- 錠剤全体を100質量%として、50乃至95質量%のβ-シクロデキストリンを含有する請求項1記載の錠剤。
- さらにグルカン類を0.0165乃至2.5質量%含有していてもよい請求項1乃至2のいずれか1項記載の錠剤。
- リマプロストが、リマプロスト アルファデクスとして前記錠剤に含有され、ここで当該錠剤は、少なくとも(1)リマプロスト アルファデクスを含有する凍結乾燥体と(2)β-シクロデキストリンとの混合物を含有する請求項1乃至3のいずれか1項記載の錠剤。
- 溶媒非存在下で(2)のβ-シクロデキストリンを混合添加する工程を含んで製造される請求項4記載の錠剤。
- 凍結乾燥体中にさらにβ-シクロデキストリンを含有する請求項5記載の錠剤。
- 錠剤全体を100質量%として、凍結乾燥体中のβ-シクロデキストリンが0.1乃至1質量%である請求項6記載の錠剤。
- 凍結乾燥体中にさらにグルカン類を含有する請求項4乃至7のいずれか1項記載の錠剤。
- リマプロスト アルファデクスとグルカン類が1:0.1乃至15の比率で含有される請求項8記載の錠剤。
- リマプロスト アルファデクスとグルカン類が1:0.1乃至6の比率で含有される請求項8記載の錠剤。
- リマプロスト アルファデクス、β-シクロデキストリンおよびグルカン類を含有し、錠剤全体を100質量%として、β-シクロデキストリンを30乃至99質量%、グルカン類を0.0165乃至2.5質量%含有する錠剤。
- (1)リマプロスト アルファデクスおよび、β-シクロデキストリンおよびグルカン類を含有する凍結乾燥体と(2)β-シクロデキストリンとの混合物を含有し、錠剤全体を100質量%として、β-シクロデキストリンを30乃至99質量%、グルカン類を0.0165乃至1.0質量%含有する錠剤。
- 温度30℃ 、相対湿度75%の条件下における1か月間の保存後において、錠剤中に17S,20-ジメチル-トランス-Δ2-PGA1が実質的に含まれないか、または錠剤全体を100%として、17S,20-ジメチル-トランス-Δ2-PGA1が5%以下である請求項1乃至12のいずれか1項記載の錠剤。
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JP4890657B1 (ja) | 2012-03-07 |
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