Patent Grant
11844822
The present invention relates to prevention or reduction of coloration of a solid formulation containing a benzothia(dia)zepine derivative or a pharmaceutically acceptable salt, solvate, or solvate of such a salt.
It is known that some benzothia(dia)zepine derivatives function as inhibitors of IBAT (Ileal Bile Acid Transporter) (Patent Document 1). The inhibitors of IBAT are useful in the treatment of dyslipidemic conditions and disorders such as hyperlipidemia, hypertrigliceridemia, hyperbetalipoproteinemia (high LDL), hyperprebetalipoproteinemia (high VLDL), hyperchylomicronemia, hypolipoproteinemia, hypercholesterolemia, hyperlipoproteinemia and hypoalphalipoproteinemia (low HDL).
In addition, the benzothia(dia)zepine derivatives mentioned above are also useful in the treatment of functional constipation and constipation-dominant irritable bowel syndrome (C-IBS) (Patent Document 2 and Patent Document 3).
The aforementioned benzothia(dia)zepine derivatives or pharmaceutically acceptable salts, solvates, or solvates of such salts (hereinafter, simply referred to as “benzothia(dia)zepine derivative” in some cases) are stable compounds per se. For example, they are stable over time even under an atmosphere of high temperature and/or high humidity.
However, it has been found that there is a problem in that in the case of blending the aforementioned benzothia(dia)zepine derivative in a solid formulation, the benzothia(dia)zepine derivative may become unstable and coloration of the solid formulation may occur in some cases. In particular, coloration (in particular, red coloration) caused by the aforementioned benzothia(dia)zepine derivative in a solid formulation may occur even in a well-closed environment.
The present invention has an object to stabilize certain benzothia(dia)zepine derivatives in solid formulations containing the same, and provide a solid formulation containing the stabilized derivative mentioned above.
The object of the present invention can be achieved, in a solid formulation containing (A) a certain benzothia(dia)zepine derivative, by not blending a combination of (b) polyethylene glycol and (C) polyvinyl alcohol,
The first aspect of the present invention relates to a solid formulation characterized by comprising:
(A) a compound of formula (I) or (I′):
The aforementioned solid formulation preferably contains:
The aforementioned core preferably contains the aforementioned ingredient (A).
The coating layer or capsule layer can be present in a ratio ranging from 1 to 20% by weight based on the total weight of the solid formulation. In the present specification, the term “weight” has the same meaning as that of “mass”. Therefore, “% by weight” and “part (s) by weight” have the same meanings as those of “% by mass” and “part(s) by mass”, respectively.
The aforementioned coating layer or capsule layer can contain the aforementioned ingredient (b) in an amount ranging from 0.1 to 50% by weight based on the total weight of the coating layer or capsule layer.
The aforementioned coating layer or capsule layer may contain the aforementioned ingredient (C) in an amount ranging from 50 to 90% by weight based on the total weight of the coating layer or capsule layer.
The coating layer or capsule layer preferably further contains at least one selected from the group consisting of a water-soluble polymer other than polyethylene glycol and polyvinyl alcohol, a colorant, a lubricant, and wax.
The water-soluble polymer is preferably hydroxypropyl methylcellulose.
The colorant is preferably selected from the group consisting of titanium oxide, iron oxide, zinc oxide, tar pigment, and lake pigment.
The lubricant is preferably talc.
The wax is preferably carnauba wax.
The core preferably contains at least one additive selected from the group consisting of a filler, a disintegrant, a binder, a lubricant, and a fluidizer.
The solid formulation according to the present invention is preferably a film-coated tablet or a capsule.
The aforementioned ingredient (A) is preferably selected from the group consisting of:
The aforementioned ingredient (A) is more preferably 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-1′-phenyl-1′-[N′-(carboxymethyl)carbamoyl]methyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,5-benzothiazepine, that is, Elobixibat.
The amount of the aforementioned ingredient (A) may range from 0.01 to 50% by weight based on the total weight of the solid formulation.
The amount of the aforementioned ingredient (A) may range from 1 to 20 mg.
The aforementioned polyethylene glycol preferably has an average molecular weight ranging from 200 to 20,000.
The solid formulation according to the present invention is preferably in the form of a tablet having a diameter ranging from 5 to 11 mm.
The solid formulation according to the present invention is preferably intended for treating or preventing constipation in a warm-blooded animal including a human being. The aforementioned constipation may be functional constipation or constipation-predominant irritable bowel syndrome.
The second aspect of the present invention relates to a method for preventing or reducing coloration of a solid formulation containing (A) a compound of formula (I) or (I′), or a pharmaceutically acceptable salt, solvate, or solvate of such a salt,
In accordance with the present invention, a certain benzothia(dia)zepine derivative in a solid formulation containing the same can be stabilized, and a solid formulation containing the stabilized derivative can be provided.
The benzothia(dia)zepine derivatives in the solid formulations according to the present invention are stable over time even under an atmosphere at high temperature and/or in high moisture. Therefore, even if the solid formulations according to the present invention are allowed to stand under an atmosphere at high temperature and/or in high moisture, occurrence of coloration (in particular, red coloration phenomenon) of the solid formulations derived due to destabilization of the benzothia(dia)zepine derivatives mentioned above can be prevented or reduced. In particular, the solid formulations of the present invention are stable under well-closed environment.
Therefore, the solid formulations of the present invention can be stored for a long period of time, and the pharmaceutical effects of the benzothia(dia)zepine derivatives contained in the solid formulations can be maintained. In particular, the solid formulations of the present invention can be stable even under an atmosphere at high temperature and/or in high moisture in the summer season.
As a result of diligent studies of the cause of destabilization of the aforementioned benzothia(dia)zepine derivatives (in particular, red coloration phenomenon) in solid formulations containing the derivatives mentioned above, the inventors of the present application determined the cause. That is, the aforementioned benzothia(dia)zepine derivatives contact a combination of polyethylene glycol and polyvinyl alcohol in the solid formulations, thus causing destabilization of the derivatives.
In the present invention, in a solid formulation containing the aforementioned benzothia(dia)zepine derivative, a combination of polyethylene glycol and polyvinyl alcohol is not added to the solid formulation, or alternatively, in the case of adding a combination of polyethylene glycol and polyvinyl alcohol to the solid formulation, the benzothia(dia)zepine derivative is isolated from the combination of polyethylene glycol and polyvinyl alcohol, thus preventing or reducing destabilization of the benzothia(dia)zepine derivative. Thereby, coloration of the solid formulation derived due to destabilization of the aforementioned benzothia(dia)zepine derivative can be prevented or reduced.
Hereinafter, the embodiments for carrying out the present invention are described in detail.
A first aspect of the present invention relates to a solid formulation containing a certain benzothia(dia)zepine derivative, wherein the solid formulation is free from a combination of polyethylene glycol and polyvinyl alcohol, or alternatively, in the case of containing a combination of polyethylene glycol and polyvinyl alcohol in the solid formulation, the aforementioned benzothia(dia)zepine derivative is isolated from the combination of polyethylene glycol and polyvinyl alcohol.
The benzothia(dia)zepine derivatives usable in the present invention are preferably (A) compounds represented by the following formula (I) or (I′):
The compound of the aforementioned formula (I) is preferably a compound represented by the following formula (I-1):
The compound of the aforementioned formula (I) is more preferably a compound represented by the following formula (I-2):
Hereinafter, in the case of indicating a compound of formula (I), it should be understood that the aspect thereof also relates to the compounds of formula (I-1) and the compounds of formula (I-2).
In addition, a person having ordinary skill in the art will recognize that the numbering system differs between the compounds of formula (I) and the compounds of formula (I-1). The numbering system used hereinafter in the present specification refers to the compounds of formula (I). However, it should be understood that such a numbering system is also applied to the meanings corresponding to those of formula (I-1).
In the present specification, the term “alkyl” includes both straight and branched chain alkyl groups, but the references to individual alkyl groups such as “propyl” are specific for the straight chain version only. For example, “C1-6 alkyl” includes C1-4 alkyl, C1-3 alkyl, propyl, isopropyl and t-butyl. However, references to individual alkyl groups such as ‘propyl’ are specific for the straight-chain version only and references to individual branched chain alkyl groups such as ‘isopropyl’ are specific for the branched chain version only. A similar convention applies to other radicals, for example “phenyl C1-6 alkyl” would include phenyl C1-4 alkyl, benzyl, 1-phenylethyl and 2-phenylethyl. The term “halo” refers to fluoro, chloro, bromo and iodo.
In the case where optional substituents are chosen from “one or more” groups, it should be understood that such a definition includes all substituents being chosen from one of the specified groups or chosen from two or more of the specified groups.
“Heteroaryl” is a totally unsaturated, monocyclic or bicyclic ring containing 3-12 atoms of which at least one atom is chosen from nitrogen, sulfur or oxygen, and which may, unless otherwise specified, be carbon- and nitrogen-linked. A preferable “heteroaryl” refers to a totally unsaturated, monocyclic ring containing 5 or 6 atoms or a totally unsaturated, bicyclic ring containing 9 or 10 atoms of which at least one atom is chosen from nitrogen, sulfur and oxygen, and which may, unless otherwise specified, be carbon- or nitrogen-linked. In another aspect of the present invention, “heteroaryl” refers to a totally unsaturated, monocyclic ring containing 5 or 6 atoms or a totally unsaturated, bicyclic ring containing 8, 9 or 10 atoms of which at least one atom is chosen from nitrogen, sulfur and oxygen, and which may, unless otherwise specified, be carbon- or nitrogen-linked. Examples and suitable meanings of the term “heteroaryl” are thienyl, isoxazolyl, imidazolyl, pyrrolyl, thiadiazolyl, isothiazolyl, triazolyl, pyranyl, indolyl, pyrimidyl, pyrazinyl, pyridazinyl, pyridyl and quinolyl. The term “heteroaryl” preferably refers to thienyl or indolyl.
“Aryl” is a totally unsaturated, mono or bicyclic carbon ring that contains 3-12 atoms. Preferable “aryl” is a monocyclic ring containing 5 or 6 atoms or a bicyclic ring containing 9 or 10 atoms. Suitable meanings for “aryl” include phenyl or naphthyl. “Aryl” is more preferably phenyl.
“Heterocyclyl” is a saturated, partially saturated or unsaturated, mono or bicyclic ring containing 3-12 atoms of which at least one atom is chosen from nitrogen, sulfur and oxygen, and which may, unless otherwise specified, be carbon- or nitrogen-linked, wherein a —CH2— group can optionally be replaced by a —C(O)—, or a ring sulfur atom may be optionally oxidized to form S-oxide. Preferably “heterocyclyl” is a saturated, partially saturated or unsaturated, mono or bicyclic ring containing 5 or 6 atoms of which at least one atom is chosen from nitrogen, sulfur and oxygen, and which may, unless otherwise specified, be carbon- or nitrogen-linked, wherein a —CH2— group can optionally be replaced by a —C(O)— or a ring sulfur atom may be optionally oxidized to form S-oxide(s). Examples and suitable meanings of the term “heterocyclyl” are thiazolidinyl, pyrrolidinyl, pyrrolinyl, 2-pyrrolidonyl, 2,5-dioxopyrrolidinyl, 2-benzoxazolinonyl, 1,1-dioxotetrahydrothienyl, 2,4-dioxoimidazolidinyl, 2-oxo-1,3,4-(4-triazolinyl), 2-oxazolidinonyl, 5,6-dihydrouracilyl, 1,3-benzodioxolyl, 1,2,4-oxadiazolyl, 2-azabicyclo[2.2.1]heptyl, 4-thiazolidonyl, morpholino, 2-oxotetrahydrofuranyl, tetrahydrofuranyl, 2,3-dihydrobenzofuranyl, benzothienyl, tetrahydropyranyl, piperidyl, 1-oxo-1,3-dihydroisoindolyl, piperazinyl, thiomorpholino, 1,1-dioxothiomorpholino, tetrahydropyranyl, 1,3-dioxolanyl, homopiperazinyl, thienyl, isoxazolyl, imidazolyl, pyrrolyl, thiadiazolyl, isothiazolyl, 1,2,4-triazolyl, 1,3,4-triazolyl, pyranyl, indolyl, pyrinidyl, thiazolyl, pyrazinyl, pyridazinyl, pyridyl, 4-pyridonyl, quinolyl and 1-isoquinolonyl.
“Carbocyclyl” is a saturated, partially saturated or unsaturated, mono or bicyclic carbon ring that contains 3-12 atoms; wherein a —CH2— group can optionally be replaced by a —C(O)—. Preferable “carbocyclyl” is a monocyclic ring containing 5 or 6 atoms or a bicyclic ring containing 9 or 10 atoms. Suitable meanings for “carbocyclyl” include cyclopropyl, cyclobutyl, 1-oxocyclopentyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, phenyl, naphthyl, tetralinyl, indanyl or 1-oxoindanyl. In particular, “carbocyclyl” is cyclopropyl, cyclobutyl, 1-oxocyclopentyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, phenyl or 1-oxoindanyl.
An example of “C1-6 alkanoyloxy” and “C1-4 alkanoyloxy” is acetoxy. Examples of “C1-6 alkoxycarbonyl” and “C1-4 alkoxycarbonyl” include methoxycarbonyl, ethoxycarbonyl, and n- and t-butoxycarbonyl. Examples of “C1-6 alkoxy” and “C1-4 alkoxy” include methoxy, ethoxy and propoxy. Examples of “C1-6 alkanoylamino” and “C1-4 alkanoylamino” include formamido, acetamido and propionylamino. Examples of “C1-6 alkyl S(O)a wherein a is 0 to 2” and “C1-4 alkyl S(O)a wherein a is 0 to 2” include methylthio, ethylthio, methylsulphinyl, ethylsulphinyl, mesyl and ethylsulphonyl. Examples of “C1-6 alkanoyl” and “C1-4 alkanoyl” include C1-3 alkanoyl, propionyl and acetyl. Examples of “N—(C1-6 alkyl)amino” and “N—(C1-4 alkyl)amino” include methylamino and ethylamino. Examples of “N,N—(C1-6 alkyl)2 amino” and “N,N—(C1-4 alkyl)2 amino” include di-N-methylamino, di-(N-ethyl)amino and N-ethyl-N-methylamino. Examples of “C2-6 alkenyl” and “C2-4 alkenyl” are vinyl, allyl and 1-propenyl. Examples of “C2-6 alkynyl” and “C2-4 alkynyl” are ethynyl, 1-propynyl and 2-propynyl. Examples of “N—(C1-6alkyl)sulphamoyl” and “N—(C1-4 alkyl)sulphamoyl” are N—(C1-3 alkyl)sulphamoyl, N-(methyl)sulphamoyl and N-(ethyl)sulphamoyl. Examples of “N—(C1-6 alkyl)2 sulphamoyl” and “N—(C1-4 alkyl)2 sulphamoyl” are N,N-(dimethyl)sulphamoyl and N-(methyl)-N-(ethyl)sulphamoyl. Examples of “N—(C1-6 alkyl)carbamoyl” and “N—(C1-4 alkyl)carbamoyl” are methylaminocarbonyl and ethylaminocarbonyl. Examples of “N,N—(C1-6 alkyl)2 carbamoyl” and “N,N—(C1-4 alkyl)2 carbamoyl” are dimethylaminocarbonyl and methylethylaminocarbonyl. Examples of “C1-6 alkoxycarbonylamino” are ethoxycarbonylamino and t-butoxycarbonylamino. Examples of “N′—(C1-6 alkyl) ureido” are N′-methylureido and N′-ethylureido. Examples of “N—(C1-6 alkyl)ureido” are N-methylureido and N-ethylureido. Examples of “N′,N′—(C1-6 alkyl)2 ureido” are N′,N′-dimethylureido and N′-methyl-N′-ethylureido. Examples of “N′—(C1-6 alkyl)-N—(C1-6 alkyl)ureido” are N′-methyl-N-methylureido and N′-propyl-N-methylureido. Examples of “N′,N′—(C1-6 alkyl)2-N(C1-6 alkyl)ureido” are N′,N′-dimethyl-N-methylureido and N′-methyl-N′-ethyl-N-propylureido.
A suitable pharmaceutically acceptable salt of the compound of the present invention mentioned above is, for example, an acid-addition salt of a compound of the present invention which is sufficiently basic, such as an acid-addition salt with, for example, an inorganic or organic acid, such as hydrochloric acid, hydrobromic acid, sulphuric acid, phosphoric acid, trifluoroacetic acid, citric acid or maleic acid. In addition, a suitable pharmaceutically acceptable salt of a compound of the present invention which is sufficiently acidic is an alkali metal salt such as a sodium or potassium salt, an alkaline earth metal salt such as a calcium or magnesium salt, an ammonium salt or a salt with an organic base which affords a physiologically-acceptable cation, for example, a salt with methylamine, dimethylamine, trimethylamine, piperidine, morpholine or tris-(2-hydroxyethyl)amine.
The compounds of formula (I) may be administered in the form of a pro-drug which is decomposed in the human or animal body to give a compound of formula (I). Examples of pro-drugs include in vivo hydrolysable esters and in vivo hydrolysable amides of a compound of formula (I).
An in vivo hydrolysable ester of a compound of formula (I) containing a carboxy or hydroxy group is, for example, a pharmaceutically acceptable ester which is hydrolyzed in the human or animal body to produce the parent acid or alcohol. Suitable pharmaceutically acceptable esters for carboxy include C1-6 alkoxymethyl esters such as methoxymethyl, C1-6 alkanoyloxymethyl esters such as pivaloyloxymethyl, phthalidyl esters, C3-8 cycloalkoxycarbonyloxy C1-6 alkyl esters such as 1-cyclohexylcarbonyloxyethyl; 1,3-dioxolen-2-onylmethyl esters such as 5-methyl-1,3-dioxolen-2-onylmethyl; and C1-6 alkoxycarbonyloxyethyl esters such as 1-methoxycarbonyloxyethyl, and may be formed at any carboxy group in the compounds of the present invention.
An in vivo hydrolysable ester of a compound of formula (I) containing a hydroxy group includes inorganic esters such as phosphate esters and alpha-acyloxyalkyl ethers and related compounds which as a result of the in vivo hydrolysis of the ester decomposed to give the parent hydroxy group. Examples of alpha-acyloxyalkyl ethers include acetoxymethoxy and 2,2-dimethylpropionyloxy-methoxy. A selection of in vivo hydrolysable ester-forming groups for hydroxy include alkanoyl, benzoyl, phenylacetyl and substituted benzoyl and phenylacetyl, alkoxycarbonyl (to give alkyl carbonate esters), dialkylcarbamoyl and N-(dialkylaminoethyl)-N-alkylcarbamoyl (to give carbamates), dialkylaminoacetyl and carboxyacetyl.
Examples of substituents on benzoyl include morpholino and piperazino linked from a ring nitrogen atom via a methylene group to the 3- or 4-position of the benzoyl ring.
A suitable meaning for an in vivo hydrolysable amide of a compound of formula (I) containing a carboxy group is, for example, an N—C1-6 alkyl or N,N-di-C1-6 alkyl amide such as N-methyl, N-ethyl, N-propyl, N,N-dimethyl, N-ethyl-N-methyl or N,N-diethyl amide.
The compounds mentioned above have IBAT inhibitory activities. Some compounds of formula (I) may have chiral centers and/or geometric isomeric centers (E- and Z-isomers), and it should be understood that the present invention encompasses all such optical, diastereoisomers and geometric isomers that possess IBAT inhibitory activities.
The aforementioned ingredient (A) in the present invention relates to any and all tautomeric forms of the compounds of formula (I) that possess IBAT inhibitory activities.
It should also be understood that certain compounds of formula (I) can exist in the solvated as well as unsolvated forms such as a hydrated form. It should be understood that the ingredient (A) mentioned above in the present invention encompasses all such solvated forms which possess IBAT inhibitory activities.
More preferable compounds as a compound of formula (I) are represented by the following formula (I-3):
As the compound of formula (I), in particular, 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-1′-phenyl-1′-[N′-(carboxymethyl)carbamoyl]methyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,5-benzothiadiazepine, that is, Elobixibat is preferable.
On the other hand, as the compound of formula (I′), in particular, 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-α-[N-(2-sulphoethyl)carbamoyl]-4-hydroxybenzyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,2,5-benzothiadiazepine; 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-α-[N—((S)-1-carboxy-2-(R)-hydroxypropyl)carbamoyl]-4-hydroxybenzyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,2,5-benzothiadiazepine; 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-α-[N—((S)-1-carboxy-2-methylpropyl)carbamoyl]-4-hydroxybenzyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,2,5-benzothiadiazepine; or 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-α-[N—((S)-1-carboxypropyl)carbamoyl]-4-hydroxybenzyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,2,5-benzothiadiazepine is preferable.
A compound of formula (I) or (I′), or a pharmaceutically acceptable salt, solvate, solvate of such a salt or a prodrug thereof can be manufactured in accordance with a method described in, for example, Japanese Patent No. 3665005 (the content of which is incorporated in the specification of the present application by reference).
The aforementioned ingredient (A) possesses IBAT inhibitory activities. These properties may be assessed, for example, using an in vitro test assay for studying the effect on bile acid uptake in IBAT-transfected cells (Smith L., Price-Jones M. J., Hugnes K. T., and Jones N. R. A.; J Biomolecular Screening, 3, 227-230) or in vivo by studying the effect on radiolabelled bile acid absorption in mice/rats (Lewis M. C., Brieaddy L. E. and Root C., J., J Lip Res 1995, 36, 1098-1105).
The aforementioned ingredient can be used in the treatment of dyslipidemic conditions and disorders such as hyperlipidemia, hypertrigliceridemia, hyperbetalipoproteinemia (high LDL), hyperprebetalipoproteinemia (high VLDL), hyperchylomicronemia, hypolipoproteinemia, hypercholesterolemia, hyperlipoproteinemia and hypoalphalipoproteinemia (low HDL) in a warm-blooded animal, such as a human being.
In addition, the aforementioned ingredient (A) can be used in the treatment of different clinical conditions such as atherosclerosis, arteriosclerosis, arrhythmia, hyper-thrombotic conditions, vascular dysfunction, endothelial dysfunction, heart failure, coronary heart diseases, cardiovascular diseases, myocardial infarction, angina pectoris, peripheral vascular diseases, inflammation of cardiovascular tissues such as heart, valves, vasculature, arteries and veins, aneurisms, stenosis, restenosis, vascular plaques, vascular fatty streaks, leukocyte, monocytes and/or macrophage infiltrate, intimital thickening, medial thinning, infectious and surgical trauma and vascular thrombosis, stroke and transient ischemic attacks in a warm-blooded animal, such as a human being.
There is evidence indicating that an IBAT inhibitor can be potentially useful in the treatment and/or prevention of gallstone or cholelithiasis. The aforementioned ingredient (A) can be used in the treatment and/or prevention of gallstone or cholelithiasis in a warm-blooded animal, such as a human being.
In the present invention, the aforementioned ingredient (A) can also be used in the treatment of gastrointestinal disorders. In particular, the ingredient (A) can be used in the treatment of chronic constipation, functional constipation and irritable bowel syndrome, and in particular, constipation-dominant irritable bowel syndrome (C-IBS).
In the specification of the present application, in the case of using the terms “functional constipation” and “C-IBS”, it should be understood that they are defined in accordance with “Rome 2 Criteria” (Gut 45 (Suppl 2): 43, 1999, 1143-1147).
An amount of the aforementioned ingredient (A) contained in the solid formulation of the present invention is not particularly limited, and can range from 0.01 to 50% by weight, preferably ranges from 0.05 to 40% by weight, more preferably ranges from 0.1 to 30% by weight, even more preferably ranges from 0.2 to 20% by weight, even more preferably ranges from 0.5 to 10% by weight, and in particular, preferably ranges from 0.8 to 5% by weight, based on the total weight of the solid formulation.
An amount of the aforementioned ingredient (A) contained in the solid formulation of the present invention is not particularly limited, and can range from 0.1 to 100 mg, preferably ranges from 0.3 to 75 mg, more preferably ranges from 0.5 to 50 mg, even more preferably ranges from 0.8 to 30 mg, and in particular, preferably ranges from 1 to 20 mg.
Polyethylene glycol (b) (hereinafter, simply referred to as “ingredient (b)” in some cases) in the first aspect of the present invention has an average molecular weight preferably ranging from 200 to 20,000, more preferably ranging from 300 to 10,000, and even more preferably ranging from 400 to 6,000. The average molecular weight used herein may be a number average molecular weight.
Polyvinyl alcohol (C) (hereinafter, simply referred to as “ingredient (C)” in some cases) in the first aspect of the present invention is not particularly limited as long as it can be usually used for film-coating a medicinal product, and may be either one of completely hydrolyzed product or partially hydrolyzed product. As a partially hydrolyzed product, for example, a product having a degree of hydrolyzation ranging from 70 to 95% by mol, in particular, ranging from 80 to 90% by mol, or furthermore ranging from 85 to 90% by mol is preferably used. In addition, a degree of polymerization is not particularly limited, but preferably ranges from 100 to 3,000, and more preferably ranges from 300 to 1,000.
In the first aspect of the present invention, a solid formulation containing ingredient (A) is free from a combination of (b) polyethylene glycol and (C) polyvinyl alcohol, or in the case where a solid formulation contains a combination of (b) polyethylene glycol and (C) polyvinyl alcohol, the aforementioned ingredient (A) is isolated from the combination of (b) polyethylene glycol and (C) polyvinyl alcohol.
The term “free from ˜” means that ˜ does not substantially exist in a solid formulation of the present invention. Therefore, a trace amount of the aforementioned ingredient (b) and ingredient (C) may coexist within a range in which coloration of the solid formulation of the present invention can be prevented or reduced. More particularly, even if ingredient (A) is able to contact a combination of ingredient (b) and ingredient (C), the aforementioned ingredient (b) may exist in an amount of less than 1% by weight based on the total weight of the solid formulation, or may exist in an amount of less than 0.1% by weight or in an amount of less than 0.01% by weight, based on the total weight of the solid formulation. In addition, even if ingredient (A) is able to contact a combination of ingredient (b) and ingredient (C), the aforementioned ingredient (C) may exist in an amount of less than 10% by weight based on the total weight of the solid formulation, or may exist in an amount of less than 5% by weight based on the total weight of the solid formulation, or may exist in an amount of less than 1% by weight, based on the total weight of the solid formulation.
A particular embodiment of isolation in the case of isolating ingredient (A) from the combination of ingredient (b) and ingredient (C) is not particularly limited, and any options can be used as long as direct contact between ingredient (A) and the combination of ingredient (b) and ingredient (C) is inhibited.
For example, at least one isolation layer can be provided between ingredient (A), and one or both of ingredient (b) and ingredient (C).
The material of the isolation layer mentioned above is not particularly limited, as long as the material does not include both ingredient (b) and ingredient (C). For example, the material of the isolation layer may be a water-soluble polymer of a cellulose derivative such as hydroxypropyl methylcellulose (hypromellose) or hydroxypropyl cellulose, a water-soluble vinyl derivative (such as polyvinyl alcohol), or a water-soluble polymer such as polyethylene glycol or starch. In addition, as a material of the isolation layer mentioned above, a lubricant such as calcium stearate, glycerol monostearate, glyceryl palmitostearate, magnesium stearate, sodium stearyl fumarate, sucrose fatty acid ester, zinc stearate, stearic acid, or talc can also be used. In addition, a coating agent such as titanium oxide can also be used. In order to achieve assured isolation, a water-soluble polymer is preferably used, and use of hypromellose is more preferable.
Weight of the isolation layer mentioned above is not particularly limited. An amount of the isolation layer preferably ranges from 0.1 to 20% by weight, more preferably ranges from 0.5 to 15% by weight, and even more preferably ranges from 1 to 10% by weight, based on the total weight of the solid formulation.
Thickness of the isolation layer mentioned above is not particularly limited, and preferably ranges from 0.01 to 5 mm, more preferably ranges from 0.05 to 3 mm, and even more preferably ranges from 0.1 to 1 mm.
In the case of isolating ingredient (A) from a combination of ingredient (b) and ingredient (C), the amount of the aforementioned ingredient (b) and ingredient (C) contained in a solid formulation of the present invention is not limited.
In the case of ingredient (A) being isolated from a combination of ingredient (b) and ingredient (C), the amount of ingredient (b) contained in the solid formulation of the present invention can range, for example, from 0.1 to 20% by weight, and may range from 0.2 to 10% by weight, or may range from 0.3 to 5% by weight, based on the total weight of the solid formulation. In addition, the amount of ingredient (b) contained in the solid formulation of the present invention can range, for example, from 1 to 50% by weight, or may range from 3 to 45% by weight, or may range from 5 to 40% by weight, based on the total weight of the aforementioned ingredient (A).
In the case of ingredient (A) being isolated from a combination of ingredient (b) and ingredient (C), the amount of ingredient (C) contained in the solid formulation of the present invention can range, for example, from 0.1 to 20% by weight, may range from 1.0 to 10% by weight, or may range from 2.0 to 5% by weight, based on the total weight of the solid formulation. In addition, the amount of ingredient (C) contained in the solid formulation of the present invention can range, for example, from 10 to 80% by weight, may range from 20 to 75% by weight, or may range from 30 to 50% by weight, based on the total weight of the aforementioned ingredient (A).
The solid formulation preferably contains
Only one core may be present in the solid formulation of the present invention, or two or more cores may be present. The core preferably contains ingredient (A). The form of the core is not particularly limited, and the core may be in the form of a mixture of simple powders, granules or the like. On the other hand, in the case of the solid formulation of the present invention being in the form of a film-coated tablet, the core mentioned above can be an uncoated tablet before film-coating. In addition, in the case of the solid formulation of the present invention being in the form of a capsule tablet, the aforementioned core can form a granule to be capsulated.
The aforementioned core preferably contains an inert carrier together with ingredient (A). The inert carrier mentioned above preferably contains at least one additive selected from the group consisting of a filler, a disintegrant, a binder, a lubricant, and a fluidizer.
As the filler, at least one selected from the group consisting of sugars, sugar alcohols, inorganic fillers and crystalline cellulose is preferable. Examples of sugars include, for example, lactose (lactose hydrate, anhydrous lactose), saccharose, sucrose, fructose, fructooligosaccharides, glucose, maltose, reduced maltose, powder sugar, powdered candy, reduced lactose, and the like. Examples of sugar alcohols include, for example, erythritol, sorbitol, maltitol, xylitol, mannitol, and the like. Examples of inorganic fillers include, for example, anhydrous calcium hydrogen phosphate, anhydrous calcium phosphate, precipitated calcium carbonate, calcium silicate, and the like. A combination of two or more types among these may be used. Mannitol, crystalline cellulose, or a mixture thereof is preferable. An amount of the filler in the core mentioned above is not particularly limited, usually ranges from 60 to 99% by weight, preferably ranges from 70 to 95% by weight, and more preferably ranges from 80 to 90% by weight based on the total weight of the core.
As the disintegrant, at least one selected from the group consisting of natural starches, starch derivatives, crospovidone, carboxymethyl cellulose, carboxymethyl cellulose calcium, low-substituted hydroxypropyl cellulose and carmellose is preferable. For example, examples of natural starches include corn starch, potato starch, rice starch, wheat starch and the like. Examples of starch derivatives include hydroxypropyl starch obtained by processing the natural starch, and the like. A combination of two or more types among these may be used. Carmellose is preferable, croscarmellose is more preferable, and croscarmellose sodium is even more preferable. An amount of the disintegrant in the aforementioned core is not particularly limited, but usually ranges from 0.1 to 20% by weight, preferably ranges from 1.0 to 10% by weight, and more preferably ranges from 2.0 to 5% by weight based on the total weight of the core.
Examples of the binder include, for example, hydroxypropyl cellulose, polyvinyl alcohol, povidone (polyvinylpyrrolidone), hypromellose (hydroxypropyl methylcellulose), agar, gelatin and the like. A combination of two or more types among these may be used. Hypromellose is preferable. An amount of the binder in the aforementioned core is not particularly limited, but usually ranges from 0.1 to 20% by weight, preferably ranges from 1.0 to 10% by weight, and more preferably ranges from 2.0 to 5% by weight.
Examples of the lubricant include, for example, calcium stearate, glycerol monostearate, glyceryl palmitostearate, magnesium stearate, sodium stearyl fumarate, sucrose fatty acid ester, zinc stearate, stearic acid, talc, and the like. A combination of two or more types among these may be used. Magnesium stearate is preferable. An amount of the lubricant in the core is not particularly limited, but usually ranges from 0.1 to 20% by weight, preferably ranges from 0.5 to 10% by weight, and more preferably ranges from 1.0 to 5% by weight based on the total weight of the core.
Examples of fluidizer include, for example, light anhydrous silicic acid, hydrated silicon dioxide, and the like. A combination of two or more types among these may be used. Light anhydrous silicic acid is preferable. An amount of the fluidizer in the core is not particularly limited, but usually ranges from 0.01 to 10% by weight, preferably ranges from 0.1 to 5% by weight, and more preferably ranges from 0.5 to 3% by weight based on the total weight of the core.
In order to provide good administration ability in the oral cavity, a sweetener and/or a flavoring agent or a perfuming agent may preferably be added to the aforementioned core. Examples of the sweetener include, for example, dipotassium glycyrrhizinate, saccharin sodium, saccharin, stevia, aspartame, sucralose, thaumatin, acesulfame-K, neotame, and the like. Examples of the flavoring agent or the perfuming agent include, for example, citrus flavors of lemon, orange, grapefruit, and the like, peppermint, spearmint, menthol, pine, cherry, fruit, yogurt, coffee, and the like.
In the core mentioned above, non-toxic and inert additives commonly used in the formulation field can be added within the range which does not affect the effects of the present invention. Examples of the additive used include, for example, a surfactant, an organic acid, a colorant, and the like.
A method for producing the core mentioned above is not particularly limited. For example, in the case of the core mentioned above being in the form of a granule, the core can be manufactured by means of a fluid bed granulator represented by a flow coater (manufactured by Freund Corp.), a GPCG (Glatt Powder Coater Granulator), a WSG (Wirbel Schicht Granulator), a multiplex (GLATT/manufactured by Powrex Corporation), or the like, or by means of a stirring granulator represented by a vertical granulator (manufactured by Powrex Corporation), or the like.
In addition, in the case of the core mentioned above being in the form of an uncoated tablet, a wet granulation tableting method in which the granules manufactured by means of the aforementioned manufacturing method are molded, a direct tableting method in which various raw materials are suitably mixed, and the mixed powder is molded, or a dry granulation tableting method can be used. As the molding method mentioned above, a compression molding method using a rotary tableting machine or the like is preferable from a commercial point of view. The uncoated tablet can also be molded by means of an external lubricating method. In this case, tableting is carried out after mixing the ingredients other than a lubricant, while spraying the lubricant on a die-punch, or alternatively, tableting is carried out after previously mixing a part of the lubricant with the ingredients other than a lubricant, by spraying the remaining lubricant on a die-punch. In addition, the uncoated tablet can also be manufactured by means of a special tablet press such as a tablet press for nucleated tablets, a two-layer tablet press, or a three-layer tablet press.
In the case of the core mentioned above being an uncoated tablet, in order to maintain a good balance between disintegration time and hardness, a suitable tableting pressure is preferably selected during production of the uncoated tablets. The tableting pressure is normally 2 kN (about 200 kgf) or more, preferably 4 kN (about 400 kgf) or more, and more preferably 6 kN (about 600 kgf) or more.
In the solid formulation of the present invention according to the aforementioned embodiment, only one coating layer or capsule layer mentioned above enclosing the core mentioned above may be present, or two or more coating layers or capsule layers may be present. Here, “enclosing” means that the coating layer or capsule layer encloses the core, and does not necessarily contact the core. For example, at least one isolating layer may be present between the core and the coating layer or capsule layer. In this case, the core does not directly contact the coating layer or capsule layer. On the other hand, the core may directly contact the coating layer or capsule layer. In this case, the coating layer or capsule layer contains neither ingredient (b) nor ingredient (C). On the other hand, even if the core directly contacts the coating layer or capsule layer, the coating layer or capsule layer can contain either one of ingredient (b) or ingredient (C).
The weight of the isolation layer mentioned above is not particularly limited, and preferably ranges from 0.1 to 20% by weight, more preferably ranges from 0.5 to 15% by weight, and even more preferably ranges from 1 to 10% by weight based on the total weight of the solid formulation.
The thickness of the isolation layer mentioned above is not particularly limited, and preferably ranges from 0.01 to 5 mm, more preferably ranges from 0.05 to 3 mm, and even more preferably ranges from 0.1 to 1 mm.
The coating layer or capsule layer mentioned above can be present in a ratio ranging from 0.1 to 20% by weight, preferably ranging from 0.5 to 15% by weight and further more ranging from 1 to 10% by weight based on the total weight of the solid formulation.
The coating layer or capsule layer mentioned above may include a small amount of ingredient (A). In this case, an amount of the aforementioned ingredient (A) included therein is preferably 10% by weight or less, more preferably 5% by weight or less, more preferably 1% by weight or less, and even more preferably 0.1% by weight or less, based on the total weight of the aforementioned layer. In particular, preferably, the coating layer or capsule layer mentioned above does not contain ingredient (A).
The coating layer or capsule layer mentioned above can contain ingredient (b) in an amount ranging from 0.1 to 50% by weight based on the total weight of the coating layer or capsule layer. The amount may range from 0.1 to 40% by weight, or may range from 1 to 30% by weight.
The coating layer or capsule layer mentioned above can contain ingredient (C) in an amount ranging from 50 to 90% by weight based on the total weight of the coating layer or capsule layer. The amount may range from 50 to 80% by weight, or may range from 50 to 70% by weight.
The coating layer or capsule layer preferably further contains at least one selected from the group consisting of a water-soluble polymer other than polyethylene glycol and polyvinyl alcohol, a colorant, a lubricant, and wax.
Examples of the water-soluble polymer mentioned above include, for example, cellulose-based derivatives such as hypromellose (hydroxypropyl methylcellulose), methyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose sodium, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose phthalate, and hydroxypropyl methylcellulose acetate succinate, starches such as starch and pullulan, water-soluble vinyl derivatives such as polyvinyl pyrrolidone, sodium alginate, gum arabic powder, gelatin and the like. Hypromellose, hydroxypropyl cellulose, water-soluble vinyl derivatives, and starches are preferable. Hypromellose, hydroxypropyl cellulose, and water-soluble vinyl derivatives are more preferable. Hypromellose and hydroxypropyl cellulose are most preferable. In addition, a mixture of a disintegrant auxiliary agent and an enteric polymer or a water-insoluble polymer may be contained, in addition to the water-soluble polymer. Examples of the enteric polymer include, for example, enteric cellulose esters such as cellulose acetate propionate, hydroxypropyl methylcellulose acetate succinate (for example, trade name: Shin-EtsuAQOAT, manufactured by Shin-Etsu Chemical Co., Ltd.), hydroxypropyl methylcellulose phthalate, carboxymethyl ethylcellulose, and cellulose acetate phthalate, enteric acrylic acid-based copolymers such as methacrylic acid copolymer L (for example, trade name: Eudragit L, manufactured by Evonik Degussa Japan), methacrylic acid copolymer LD (for example, trade name: Eudragit L 30D-55, manufactured by Evonik Degussa Japan, tradename: POLYQUID PA 30, POLYQUID PA 30-S, manufactured by Sanyo Chemical Industries, Ltd., trade name: Kollicoat MAE 30DP, manufactured by BASF), and methacrylic acid copolymer S (for example, trade name: Eudragit S, Eudragit S 100, Eudragit FS 30D, manufactured by Evonik Degussa Japan), and the like. These polymers may be used in a mixture of two or more types.
The water-soluble polymer is preferably hydroxypropyl methylcellulose. An amount of the water-soluble polymer mentioned above in the coating layer or capsule layer mentioned above is not particularly limited. The amount usually ranges from 50 to 99% by weight, preferably ranges from 60 to 95% by weight and more preferably ranges from 70 to 90% by weight based on the total weight of the coating layer or capsule layer.
The colorant mentioned above is preferably selected from the group consisting of titanium oxide, iron oxide, zinc oxide, tar pigments, and lake pigments.
Examples of iron oxide include, for example, black iron oxide, red ferric oxide, yellow ferric oxide, and the like. Examples of tar pigments include, for example, water-soluble edible tar pigments such as food yellow No. 5 and food blue No. 2. Examples of lake pigments include, for example, yellow No. 5 aluminum lake, and the like. A combination of two or more types among these may be used. Titanium oxide is preferable. The amount of the colorant in the coating layer or capsule layer mentioned above is not particularly limited, but usually ranges from 1 to 20% by weight, preferably ranges from 3 to 15% by weight, and more preferably ranges from 5 to 10% by weight, based on the total weight of the coating layer or capsule layer.
Examples of the lubricant include, for example, calcium stearate, glycerol monostearate, glyceryl palmitostearate, magnesium stearate, sodium stearyl fumarate, sucrose fatty acid ester, zinc stearate, stearic acid, talc, and the like. A combination of two or more types among these may be used. Talc is preferable.
An amount of the lubricant in the coating layer and capsule layer is not particularly limited, but usually ranges from 0.1 to 20% by weight, preferably ranges from 0.5 to 15% by weight, and more preferably ranges from 1.0 to 10% by weight, based on the total weight of the coating layer or capsule layer.
Examples of the wax include, for example, carnauba wax, beeswax, stearic acid and the like. A combination of two or more types among these may be used. Carnauba wax is preferable. An amount of the wax in the coating layer or capsule layer is not particularly limited, but usually ranges from 0.01 to 10% by weight, preferably ranges from 0.05 to 1% by weight, and more preferably ranges from 0.05 to 0.1% by weight, based on the total weight of the coating layer or capsule layer.
The coating layer or capsule layer mentioned above can contain a plasticizer other than ingredient (b). The types of the plasticizer are not particularly limited. For example, (B) at least one type selected from the group consisting of propylene glycol, glycerol, glyceryl triacetate, triethyl acetyl citrate, dibutyl sebacate, diethyl phthalate, castor oil, a copolymer of propylene oxide and ethylene oxide, triacetin, triethyl citrate, and a mixture thereof (hereinafter, simply referred to as “ingredient (B)” in some cases) can be used.
In order to further prevent or reduce decomposition of ingredient (A) in the solid formulation of the present invention over time, in the case of the core mentioned above contacting the coating layer or capsule layer mentioned above, the coating layer or capsule layer mentioned above is free from ingredient (B), or alternatively, even if the coating layer or capsule layer mentioned above contains ingredient (B), the amount thereof is preferably 0.9% by weight or less, more preferably 0.8% by weight or less, even more preferably 0.6% by weight or less, even more preferably 0.4% by weight or less, and in particular, preferably 0.3% by weight or less, based on the total weight of the solid formulation. More particularly, in the case of the aforementioned core contacting the aforementioned coating layer or capsule layer, the coating layer or capsule layer can contain the aforementioned ingredient (B), for example, in an amount ranging from 0.1 to 40% by weight based on the total weight of the coating layer or capsule layer, and the amount thereof preferably ranges from 1 to 35% by weight, and more preferably ranges from 5 to 10% by weight.
The coating layer or capsule layer can contain a plasticizer other than the ingredient (B) and ingredient (b) mentioned above. Examples of the plasticizer mentioned above include, for example, polysorbates such as polysorbate 20, polysorbate 40, polysorbate 60, and polysorbate 80, and the like. The amount of the aforementioned plasticizer ranges, for example, from 1 to 20% by weight, preferably ranges from 3 to 15% by weight, and more preferably ranges from 5 to 10% by weight, based on the coating layer or capsule layer mentioned above.
A method for forming the coating layer or capsule layer is not particularly limited. In the case of the core directly contacting the coating layer or capsule layer, the coating layer or capsule layer may be directly formed on the surface of the core by means of a coating machine represented by HICOATER, new HICOATER, AQUA COATER (manufactured by Freund Corp.), DOREA COATER, POWREX COATER (manufactured by Powrex Corporation), or the like, a sugar-coating pan, a Wurster type coating machine, or the like. On the other hand, in the case of the core directly non-contacting the coating layer or capsule layer, at least one isolation layer mentioned above may be formed on the surface of the core by means of the aforementioned coating machine, and the coating layer or capsule layer can be formed on the surface of the isolation layer by means of the aforementioned coating machine. In addition, after forming the coating layer or capsule layer, an intraoral disintegration property can also be improved by humidification or the like.
The formation of the coating layer or capsule layer and the formation of the isolation layer are preferably carried out using an aqueous coating liquid. The aqueous coating liquid means an aqueous dispersion or solution of the constitutional ingredients of the coating layer or capsule layer or those of the isolation layer, and means a coating liquid containing of water or a mixed solution of water/water-soluble organic solvent, as a medium.
The water amount in the aqueous coating liquid is suitably determined in accordance with types and blending amounts of the ingredients and the amount of the water-soluble organic solvent added. The preferable water amount ranges, for example, from 5 to 1,000 parts by weight, preferably ranges from 7 to 100 parts by weight, and more preferably ranges from 8 to 50 parts by weight based on one part by weight of the constitutional ingredients of the isolation layer or the coating layer or capsule layer.
Examples of the water-soluble organic solvent which may be added to the aqueous coating liquid include, for example, methanol, ethanol, propyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, dioxane, tetrahydrofuran, acetonitrile, and the like. In particular, ethanol is preferable. The amount of the water-soluble organic solvent added is determined in accordance with the types and blending amount of the ingredients, preferably ranges from 0 to 8.0 parts by weight, more preferably ranges from 0 to 2.4 parts by weight, even more preferably ranges from 0 to 1.3 parts by weight, and even more preferably ranges from 0 to 0.4 parts by weight based on one part by weight of water. In particular, the medium is preferably only water without adding a water-soluble organic solvent. Here, the medium which is only water means that only water is substantially used, and contamination of a small amount (for example 0.03 parts by weight or less based on one part by weight of water) of an organic solvent is acceptable.
The temperature of the exhaust gas temperature of the coating machine during the coating step is preferably controlled so that the temperature is higher than 30° C., but lower than 60° C. in the present invention. The coating step used herein means a step of applying the coating liquid on the core by means of a spray or the like, and during the step, ventilation is carried out. The exhaust gas temperature mentioned above is preferably 32° C. or higher, but 55° C. or lower, and more preferably 35° C. or higher, but 45° C. or lower. When the exhaust gas temperature mentioned above is 30° C. or lower, or alternatively 60° C. or higher, separation of a coating film may easily occur, roughness of the coating film may be increased, and therefore, a good coating film may not be formed in some cases.
Alternatively, in the present invention, the product temperature during the coating step is preferably controlled so that the product temperature is higher than 20° C., but lower than 56° C. Here, the product temperature during the coating step is the temperature of the core during the coating step. The product temperature can be measured by means of an infrared thermometer. The product temperature mentioned above is preferably 25° C. or higher, but 50° C. or lower, and more preferably 35° C. or higher, but 45° C. or lower. If the aforementioned product temperature is 20° C. or lower or 56° C. or higher, separation of the coating film may easily occur, roughness of the coating film may be increased, and a good coating film may not be formed in some cases.
During controlling of the exhaust gas temperature or the product temperature, the adjustment of the exhaust gas temperature or the product temperature can be carried out by adjusting, for example, the charge gas temperature, the amount of the charge gas, or the addition rate of the coating liquid (spraying rate and the like). In particular, controlling of the charge gas temperature is preferably carried out.
The application of the coating liquid may be carried out by pouring-and-adding or spraying, and spraying is preferable. In the case where, for example, 1 kg of uncoated tablets (250 mg/tablet) are subjected to spray coating by means of a ventilation type coating machine such as HICOATER (manufactured by Freund Corp.) or the like, the blast temperature may be set based on the exhaust temperature criteria, and the spray coating can be carried out in an air volume ranging from 1.5 to 3.5 m3/min at a spray rate ranging from 5 to 50 g/min.
The particular structure of the solid formulation of the present invention is not particularly limited. For example, the solid formulation may be in the form of fine granules, granules, capsules, or tablets. In the case of tablets, from one to two dividing lines for making division of the tablet easy may be provided. The shape of the tablet is not particularly limited, and may be, for example, round, oval (any oblong except for perfect circle; oval, egg-shaped, elliptical cylinder shape, old gold coin-shaped, or the like), diamond-shaped, triangle, or the like. The solid formulation may be in the form of so-called specially shaped tablets. In the case of providing a dividing line, the dividing line shape may be any of flat groove type, U-shaped groove type, or V-groove type. In the case of the tablet being in an oval shape, the dividing line can be preferably formed along the minor axis of the tablet.
The solid formulation of the present invention is preferably in the form of a tablet or a capsule. In the case of a tablet, a film-coating agent is preferable.
The size of the tablet mentioned above not particularly limited. In the case of the tablet being in a general-column shape, the diameter of the column preferably ranges from 5 to 11 mm, more preferably ranges from 5 to 10 mm, and even more preferably ranges from 5 to 9 mm. In the case of the tablet being a specially shaped tablet, the maximum length of the specially shaped tablet can range from 5 to 11 mm, more preferably ranges from 5 to 10 mm, and even more preferably ranges from 5 to 9 mm.
A second aspect of the present invention relates to a method for preventing or reducing coloration of a solid formulation containing a certain benzothia(dia)zepine derivative, characterized in that
The aforementioned benzothia(dia)zepine derivative is identical to the aforementioned ingredient (A) in the first aspect of the present invention. Therefore, hereinafter, it is referred to as ingredient (A).
The aforementioned polyethylene glycol (b) is identical to the aforementioned ingredient (b) in the first aspect of the present invention. Therefore, hereinafter, it is referred to as ingredient (b).
The aforementioned polyvinyl alcohol (C) is identical to the aforementioned ingredient (C) in the first aspect of the present invention. Therefore, hereinafter, it is referred to as ingredient (C).
In the case of the aforementioned ingredient (A) being isolated from the combination of the aforementioned ingredient (b) and ingredient (C), the amount of the aforementioned ingredient (b) and/or ingredient (C) contained in the solid formulation of the present invention is not limited.
On the other hand, in the case of the aforementioned ingredient (A) not being isolated from the combination of the aforementioned ingredient (b) and ingredient (C), that is, in the case of the aforementioned ingredient (A) being able to contact the combination of the aforementioned ingredient (b) and ingredient (C), the solid formulation is free from a combination of ingredient (b) and ingredient (C). Here, “free from ˜” means that ˜ is not substantially included in the solid formulation of the present invention. A trace amount of ingredient (b) and ingredient (C) may coexist within such a range that coloration of the solid formulation of the present invention is prevented or reduced. More particularly, even if ingredient (A) is able to contact the combination of ingredient (b) and ingredient (C), the aforementioned ingredient (b) may exist in an amount of less than 1.0% by weight based on the total weight of the solid formulation. In addition, less than 0.1% by weight, or less than 0.01% by weight of ingredient (b) may exist. In addition, even if ingredient (A) is able to contact the combination of ingredient (b) and ingredient (C), the aforementioned ingredient (C) may exist in an amount of less than 10% by weight based on the total weight of the solid formulation, or less than 5% by weight of ingredient (C) may exist, or less than 1% by weight of ingredient (C) may exist.
The explanation described above for the first aspect of the present invention can be applied to the solid formulation in the second aspect of the present invention. Therefore, for example, the amount of ingredient (A) in the solid formulation is not particularly limited, but the amount can range from 0.01 to 50% by weight, preferably ranges from 0.05 to 40% by weight, more preferably ranges from 0.1 to 30% by weight, even more preferably ranges from 0.2 to 20% by weight, even more preferably ranges from 0.5 to 10% by weight, and in particular, preferably ranges from 0.8 to 5% by weight, based on the total weight of the solid formulation.
In addition, the amount of the ingredient (A) mentioned above in the solid formulation is not particularly limited, can range from 0.1 to 100 mg, preferably ranges from 0.3 to 75 mg, more preferably ranges from 0.5 to 50 mg, even more preferably ranges from 0.8 to 30 mg, and in particular, preferably ranges from 1 to 20 mg.
In accordance with the present invention, in a solid formulation containing ingredient (A), the derivative mentioned above can be stabilized therein. Therefore, a solid formulation containing stabilized ingredient (A) can be provided.
Ingredient (A) in the solid formulation mentioned above is stable over time even under an atmosphere of high temperature and/or high humidity. Therefore, even if the solid formulation of the present invention is present under an atmosphere of high temperature and/or high humidity, occurrence of coloration (in particular, red coloration) of the solid formulation due to destabilization of the ingredient (A) mentioned above can be prevented or reduced. In particular, in accordance with the present invention, the solid formulation can be stable in a well-closed environment.
Therefore, in accordance with the present invention, the solid formulation can be stored for a long period of time, and the pharmaceutical effects of the ingredient (A) mentioned above contained in the solid formulation can be maintained. In particular, in accordance with the present invention, the solid formulation containing the ingredient (A) mentioned above can be stable even under an atmosphere of high temperature and high humidity in the summer season.
The present invention can provide a stabilized solid formulation containing a specified benzothia(dia)zepine derivative. The specific benzothia(dia)zepine derivatives mentioned above can function as an IBAT inhibitor, and for this reason, the solid formulations according to the present invention are useful for a long period of time in the treatment of dyslipidemic conditions and disorders such as hyperlipidemia, hypertrigliceridemia, hyperbetalipoproteinemia (high LDL), hyperprebetalipoproteinemia (high VLDL), hyperchylomicronemia, hypolipoproteinemia, hypercholesterolemia, hyperlipoproteinemia and hypoalphalipoproteinemia (low HDL), as well as in the treatment of functional constipation or constipation-predominant irritable bowel syndrome.
Hereinafter, the present invention is described in detail with reference to Examples and Comparative Examples. It should be understood that the present invention is not limited to these Examples.
1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-1′-phenyl-1′-[N′-(carboxymethyl)carbamoyl]methyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,5-benzothiazepine (Elobixibat) and an additive shown in Table 1 were mixed so that they have a volume ratio of 1:1 based on visual quantities, and thereby, the mixtures according to Reference Examples 3 to 9 were obtained. In Reference Examples 8 and 9, two types of additives shown in Table 1 were mixed in a weight ratio of 1:1, and the obtained mixture was further mixed with Elobixibat so that they had a volume ratio of 1:0.5 based on visual quantities. The mixture of each of Reference Examples 3 to 9, only Elobixibat as Reference Example 1, and only Macrogol (polyethylene glycol) 6000 as Reference Example 2 were independently stored in an aluminum bag as an airtight container for 2 weeks under the conditions of 60° C. and 75% relative humidity. After storage, the presence or absence of coloration of the materials of Reference Examples 1 and 2 and the mixtures according to Reference Examples 3 to 9 was visually observed. The results are shown in Table 1.
As is clear from Table 1, in Elobixibat alone (Reference Example 1) or Macrogol 6000 alone (Reference Example 2), coloration was not observed. In addition, in the mixture of Elobixibat with polyvinyl alcohol partial-saponification product (Reference Example 3), Hypromellose (Reference Example 4), Talc (Reference Example 5) or titanium oxide (Reference Example 6), coloration was not observed.
On the other hand, in the ternary system mixture of Elobixibat, polyvinyl alcohol partial-saponification product, and Macrogol 6000 (Reference Example 9), coloration to pale pink occurred.
In the binary system mixture of Elobixibat and Macrogol 6000 (Reference Example 7) and the ternary system mixture of Elobixibat, Macrogol 6000 and titanium oxide (Reference Example 8), slight coloration to pale yellow was observed, but was not light pink as observed in Reference Example 9.
Therefore, it can be seen that coloration to red in an Elobixibat-containing formulation is caused by contacting Elobixibat with a combination of polyethylene glycol and polyvinyl alcohol.
Crystalline cellulose (filler), D-mannitol (filler), Hypromellose (binder), croscarmellose sodium (disintegrant), light anhydrous silicic acid (fluidizer), magnesium stearate (lubricant), and 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methylthio-8-(N—{(R)-1′-phenyl-1′-[N′-(carboxymethyl)carbamoyl]methyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,5-benzothiazepine (Elobixibat) were formulated into tablets in accordance with a conventional method (mixing in a bag or mixing by means of a rotatory mixer, and tableting by means of a rotary tableting machine). Thereby, uncoated tablets (weight of uncoated tablet: 110 mg or 320 mg) containing 5% by weight of Elobixibat (drug substance) were obtained.
Macrogol 6000 (plasticizer), and Hypromellose (coating agent) or polyvinyl alcohol partial-saponification product (coating agent) were added to purified water, and mixed well until the mixture was dissolved. After the mixture was dissolved, titanium oxide (colorant) was added thereto, and mixed well to disperse it therein. The obtained mixture liquid was used as a film coating liquid. The compositions of the film coatings according to Examples 1 to 4 and Comparative Examples 1 and 2 are shown in Table 2.
The aforementioned film coating liquid was sprayed onto the aforementioned uncoated tablets by means of a pan-type coating machine. Thereby, the film coating tablets according to Examples 1 and 3, Comparative Example 1 and Comparative Example 2 were obtained.
On the other hand, Hypromellose was added to purified water and mixed well until it was dissolved. Thereby, the solution was used as a shielding coating liquid. The shielding coating liquid was sprayed onto the uncoated tablets by means of a pan-type coating machine, and shielding coating was carried out. Subsequently, the aforementioned film coating liquid containing polyvinyl alcohol was sprayed onto the tablets which had been subjected to shielding coating. Thereby, the film coating tablets according to Example 2 and Example 4, in which a shielding coating layer (isolation layer) was provided, were obtained.
The obtained film coating tablets in accordance with each of Examples 1 to 4 and Comparative Examples 1 and 2 were stored in an aluminum bag as an airtight container for 2 weeks under the conditions of 60° C. and 75% relative humidity. The outer appearance of the tablets before and after storage was observed, and the coloration state thereof was evaluated. The results are shown in Table 2.
As is clear from Table 2, in Comparative Example 1 and Comparative Example 2, in which the film coating contained a combination of polyvinyl alcohol partial-saponification product and Macrogol 6000, and the aforementioned film coating contacted uncoated tablets, the surface of the tablets was colored to pale pink.
On the other hand, in Example 1 and Example 3 in which the film coating did not contain a combination of polyvinyl alcohol partial-saponification product and Macrogol 6000, and the aforementioned coating film contacted the uncoated tablets, no red coloration at the surface of the tablets was observed. In addition, even in the case of the film coating containing both polyvinyl alcohol partial-saponification product and Macrogol 6000, in Example 2 and Example 4, in which a shielding coating layer was provided between the uncoated tablets and the film coating, controlling of coloration could be carried out.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2014-130092 | Jun 2014 | JP | national |
This application is a continuation of U.S. patent application Ser. No. 15/320,621, filed Dec. 20, 2016, which is a National Stage application under 35 U.S.C. § 371 of International Application No. PCT/JP2015/068242, filed Jun. 24, 2015, which claims the benefit of JP Application No. 2014-130092, filed Jun. 25, 2014. The disclosures of the prior applications are hereby incorporated by reference in their entirety.
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| Number | Date | Country | |
|---|---|---|---|
| 20200376071 A1 | Dec 2020 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15320621 | US | |
| Child | 16901800 | US |
