JP6471123B2 - Triarylmethane composition, staining composition for ophthalmic staining - Google Patents
Triarylmethane composition, staining composition for ophthalmic staining Download PDFInfo
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- JP6471123B2 JP6471123B2 JP2016139771A JP2016139771A JP6471123B2 JP 6471123 B2 JP6471123 B2 JP 6471123B2 JP 2016139771 A JP2016139771 A JP 2016139771A JP 2016139771 A JP2016139771 A JP 2016139771A JP 6471123 B2 JP6471123 B2 JP 6471123B2
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- formula
- bbg
- reacting
- benzylethyl
- halogen atom
- Prior art date
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- 239000000203 mixture Substances 0.000 title description 54
- 238000010186 staining Methods 0.000 title description 35
- RWVGQQGBQSJDQV-UHFFFAOYSA-M sodium;3-[[4-[(e)-[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-n-ethyl-3-methylanilino]methyl]benzenesulfonate Chemical compound [Na+].C1=CC(OCC)=CC=C1NC1=CC=C(C(=C2C(=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C)C=2C(=CC(=CC=2)N(CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C)C=C1 RWVGQQGBQSJDQV-UHFFFAOYSA-M 0.000 claims description 119
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- 125000005843 halogen group Chemical group 0.000 claims description 48
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- 238000000034 method Methods 0.000 claims description 22
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- 238000004519 manufacturing process Methods 0.000 claims description 20
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- IMPPGHMHELILKG-UHFFFAOYSA-N 4-ethoxyaniline Chemical compound CCOC1=CC=C(N)C=C1 IMPPGHMHELILKG-UHFFFAOYSA-N 0.000 claims description 9
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 9
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 8
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
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- 208000001351 Epiretinal Membrane Diseases 0.000 description 3
- 208000031471 Macular fibrosis Diseases 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
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- DLEDOFVPSDKWEF-UHFFFAOYSA-N lithium butane Chemical compound [Li+].CCC[CH2-] DLEDOFVPSDKWEF-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 201000004673 mature cataract Diseases 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- MZRVEZGGRBJDDB-UHFFFAOYSA-N n-Butyllithium Substances [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229960003104 ornithine Drugs 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- MFDFERRIHVXMIY-UHFFFAOYSA-N procaine Chemical compound CCN(CC)CCOC(=O)C1=CC=C(N)C=C1 MFDFERRIHVXMIY-UHFFFAOYSA-N 0.000 description 1
- 229960004919 procaine Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- XHFLOLLMZOTPSM-UHFFFAOYSA-M sodium;hydrogen carbonate;hydrate Chemical compound [OH-].[Na+].OC(O)=O XHFLOLLMZOTPSM-UHFFFAOYSA-M 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 238000007447 staining method Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 229940086542 triethylamine Drugs 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Description
本発明は，純度の高いブリリアントブル−Ｇ（ＢＢＧ），その製造方法，及び物性が安定した眼膜染色のための染色組成物に関する。 The present invention relates to a high-purity brilliant blue-G (BBG), a production method thereof, and a staining composition for staining an ophthalmic membrane with stable physical properties.
特許第４２００２２２号公報には，ブリリアントブル−Ｇ（ＢＢＧ）を含む眼膜除去を行う際の眼膜染色のための染色組成物が開示されている。この染色組成物は，欧州においても薬事承認が得られ，薬剤として製造販売されている。この製剤は，極めて優れた染色能を有しており，眼科治療の向上に多大な貢献をもたらしている。米国特許第６０５７１６０号明細書には，ＢＢＧの製造方法が開示されている。 Japanese Patent No. 4200222 discloses a staining composition for staining the eye membrane when removing the eye membrane containing Brilliant Blue-G (BBG). This dyeing composition has been approved by the pharmaceutical industry in Europe and is manufactured and sold as a drug. This preparation has an extremely excellent staining ability and contributes greatly to the improvement of ophthalmic treatment. US Pat. No. 6,057,160 discloses a method for producing BBG.
特許第４２００２２２号公報では，市販のＢＢＧ又はそのナトリウム塩が用いられている。実際の製剤の物性が変動することがありうるという問題があった。 In Japanese Patent No. 4200222, commercially available BBG or its sodium salt is used. There has been a problem that the physical properties of the actual preparation may vary.
上記の問題を検討した結果，本発明者は，市販のＢＢＧ又はその薬学的に許容される塩（以下単に「塩」ともいう）は，ＢＢＧの誘導体を含んでおり，ＢＢＧは多くとも５０％〜６０％しか含まれていないことを見出した。すなわち従来の合成方法に基づいてＢＢＧを製造及び精製した場合，ＢＢＧ誘導体が含まれ，ＢＢＧ又はその塩は多くとも５０％〜６０％しか含まれない。本発明者は，実際の製剤の物性が変動する理由が，ＢＢＧの誘導体の割合が変動することに起因することを突き止め，その上でＢＢＧ又はその塩の含有量が極めて高くなるＢＢＧの製造方法を見出した。本発明は，基本的には，上記の知見に基づくものである。 As a result of examining the above problems, the present inventor has found that commercially available BBG or a pharmaceutically acceptable salt thereof (hereinafter also simply referred to as “salt”) contains a derivative of BBG, and BBG is at most 50%. It was found that only ~ 60% was included. That is, when BBG is produced and purified based on a conventional synthesis method, a BBG derivative is included, and BBG or a salt thereof is included only at most 50% to 60%. The present inventor has found out that the reason why the physical properties of the actual preparation fluctuate is due to the fluctuation of the proportion of the derivative of BBG, and then the method for producing BBG in which the content of BBG or a salt thereof is extremely high I found. The present invention is basically based on the above findings.
すなわち，本発明の第１の側面は，トリアリールメタン誘導体，その薬学的に許容される塩を含むトリアリールメタン組成物に関する。トリアリールメタン誘導体は，ブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩と，ブリリアントブル−Ｇ（ＢＢＧ）の位置異性体又はその薬学的に許容される塩を含む。そして，ブリリアントブル−Ｇ（ＢＢＧ）及びブリリアントブル−Ｇ（ＢＢＧ）の薬学的に許容される塩のいずれか又は両方を，「ブリリアントブル−Ｇ（ＢＢＧ），ブリリアントブル−Ｇ（ＢＢＧ）の薬学的に許容される塩，ブリリアントブル−Ｇ（ＢＢＧ）の位置異性体，及びブリリアントブル−Ｇ（ＢＢＧ）の位置異性体の薬学的に許容される塩」の合計中，９０重量％以上１００重量％以下含む。ブリリアントブル−Ｇ（ＢＢＧ）の位置異性体とは，ブリリアントブル−Ｇ（ＢＢＧ）に含まれる環に付加する置換基の位置が異なる化合物を意味する。上記の組成物は，水や生理食塩水などの薬学的に許容される溶媒や担体を適宜含んでもよい。 That is, the first aspect of the present invention relates to a triarylmethane composition containing a triarylmethane derivative and a pharmaceutically acceptable salt thereof. The triarylmethane derivative includes brilliant blue-G (BBG) or a pharmaceutically acceptable salt thereof and a positional isomer of brilliant blue-G (BBG) or a pharmaceutically acceptable salt thereof. Then, one or both of brilliant blu-G (BBG) and pharmaceutically acceptable salt of brilliant blu-G (BBG) is designated as “Brilliant blu-G (BBG), brilliant blu-G (BBG). 90% by weight or more and 100% by weight of the sum of “a pharmaceutically acceptable salt, a positional isomer of brilliant blue-G (BBG), and a pharmaceutically acceptable salt of a positional isomer of brilliant blue-G (BBG)” % Or less. The positional isomers of Brilliant Blue-G (BBG) mean compounds having different positions of substituents added to the ring contained in Brilliant Blue-G (BBG). The above composition may appropriately contain a pharmaceutically acceptable solvent such as water or physiological saline or a carrier.
すなわち，本発明の第１の側面をより詳細に説明すると，式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩を少なくとも１つ含むトリアリールメタン組成物に関する。
そして，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を，
式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩中，９０重量％以上１００重量％以下含む。
That is, the first aspect of the present invention will be described in more detail. A triarylmethane composition comprising at least one triarylmethane derivative represented by the formulas (1) to (3) and a pharmaceutically acceptable salt thereof. About.
Then, Brilliant Blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof,
In the triarylmethane derivative represented by the formulas (1) to (3) and a pharmaceutically acceptable salt thereof, 90 to 100% by weight is contained.
上記の組成物は，眼膜除去を行う際の眼膜染色のための染色組成物として好ましく用いられる。すなわち，その眼膜除去を行う際の眼膜染色のための染色組成物は，式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩を少なくとも１つ含む。そして，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を，式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩中，９０重量％以上１００重量％以下含む。 The above composition is preferably used as a staining composition for ophthalmic staining when removing the ophthalmic membrane. That is, the staining composition for ophthalmic staining when removing the ophthalmic membrane includes at least one triarylmethane derivative represented by the formulas (1) to (3) and a pharmaceutically acceptable salt thereof. . Then, Brilliant Blue-G (BBG) represented by formula (1) or a pharmaceutically acceptable salt thereof is converted to a triarylmethane derivative represented by formula (1) to (3), or a pharmaceutically acceptable salt thereof. Contains 90% to 100% by weight in salt.
本発明の第２の側面は，上記のように存在することが知られていなかった位置異性体を効果的に取り除くことができるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩の製造方法に関する。この方法は，
式Ａ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）をベンジル化試薬と反応させ，式Ａ２で示される化合物を得るベンジル化工程と，
式Ａ２で示される化合物に三酸化硫黄又は硫酸を作用させ，
式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体から，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と，
を含む。
The second aspect of the present invention is the use of Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof that can effectively remove regioisomers that were not known to exist as described above. It relates to a manufacturing method. This method
A benzylation step of reacting ethyl-m-tolylamine of formula A1 with a benzylating reagent to obtain a compound of formula A2,
Reacting sulfur trioxide or sulfuric acid with the compound represented by formula A2,
Obtaining a benzylethyl-m-tolylamine derivative of formula A3;
Obtaining brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof from the benzylethyl-m-tolylamine derivative represented by the formula A3;
including.
（上記式中Ｘ１１は，水素原子，水酸基，アルカリ金属原子で水素原子が置換された水酸基，アルカリ金属原子又はハロゲン原子を示し，Ｘ１２は，水素原子，水酸基，アルカリ金属原子で水素原子が置換された水酸基，アルカリ金属原子又はハロゲン原子を示す。）
(In the above formula, X 11 represents a hydrogen atom, a hydroxyl group, a hydroxyl group, an alkali metal atom or a halogen atom in which a hydrogen atom is substituted with an alkali metal atom, and X 12 represents a hydrogen atom, a hydroxyl group or an alkali metal atom with a hydrogen atom. (Represents a substituted hydroxyl group, an alkali metal atom or a halogen atom.)
第２の側面の別の態様は，
式Ｂ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）を，ハロゲン原子が付加したベンジル化試薬と反応させ，式Ｂ２で示されるハロゲン化化合物を得る工程と，
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体とアルカリを反応させ，式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体から，式１で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と，
を含む，
ブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩の製造方法に関する。
Another aspect of the second aspect is:
Reacting ethyl-m-tolylamine of formula B1 with a benzylating reagent to which a halogen atom has been added to obtain a halogenated compound of formula B2,
Substituting a halogen atom of the halogenated compound represented by formula B2 to obtain a benzylethyl-m-tolylamine derivative represented by formula B3;
Reacting a benzylethyl-m-tolylamine derivative represented by formula B3 with an alkali to obtain a benzylethyl-m-tolylamine derivative represented by formula B4;
Obtaining brilliant blue-G (BBG) represented by formula 1 or a pharmaceutically acceptable salt thereof from a benzylethyl-m-tolylamine derivative represented by formula B4;
including,
The present invention relates to a method for producing Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof.
（上記式中Ｘ２１は，ハロゲン原子を示し，Ｘ２２は，ハロゲン原子を示し，Ｘ２３は，水素原子，水酸基，アルカリ金属原子で水素原子が置換された水酸基，アルカリ金属原子又はハロゲン原子を示す。）
(In the above formula, X 21 represents a halogen atom, X 22 represents a halogen atom, and X 23 represents a hydroxyl group, an alkali metal atom or a halogen atom in which a hydrogen atom is substituted with a hydrogen atom, a hydroxyl group or an alkali metal atom. Show.)
この方法は，
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程は，
式Ｂ２で示されるハロゲン化化合物に硫化物を作用させ，式Ｂ２−１で示される化合物を得る工程と，
式Ｂ２−１で示される化合物に求電子試薬ＳＯ２Ｃｌ２を作用させ，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体であってＸ２が塩素原子であるものを得る工程を含むものが好ましい。
This method
The step of substituting the halogen atom of the halogenated compound represented by Formula B2 to obtain the benzylethyl-m-tolylamine derivative represented by Formula B3 includes:
A step of allowing a sulfide to act on the halogenated compound represented by formula B2 to obtain a compound represented by formula B2-1;
A method comprising the step of allowing an electrophile SO 2 Cl 2 to act on a compound represented by formula B2-1 to obtain a benzylethyl-m-tolylamine derivative represented by formula B3, wherein X 2 is a chlorine atom. preferable.
この方法は，式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程が，
式Ｂ２で示されるハロゲン化化合物とグリニャ−ル試薬を作用させ，ＳＯ２を作用させた後に，ハロゲンイオンと作用させることで，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程であるものが好ましい。
In this method, the step of obtaining a benzylethyl-m-tolylamine derivative represented by the formula B3 by substituting a halogen atom of the halogenated compound represented by the formula B2,
This is a step of obtaining a benzylethyl-m-tolylamine derivative represented by the formula B3 by reacting a halogenated compound represented by the formula B2 with a Grignard reagent, reacting SO 2 and then reacting with a halogen ion. Those are preferred.
本発明によれば，ＢＢＧ又はその塩の含有率が高く，その結果物性の変動が生じにくいトリアリールメタン組成物を提供できる。 According to the present invention, it is possible to provide a triarylmethane composition that has a high content of BBG or a salt thereof and, as a result, hardly changes in physical properties.
本発明によれば，ＢＢＧ又はその塩の含有率が高く，物性の変動が生じにくい，眼膜除去を行う際の眼膜染色のための染色組成物を提供できる。 ADVANTAGE OF THE INVENTION According to this invention, the dyeing | staining composition for ophthalmic dyeing | staining at the time of removing an ophthalmic membrane which has a high content rate of BBG or its salt, and cannot produce a change of a physical property easily can be provided.
本発明によれば，ＢＢＧ又はその塩の含有率が高いＢＢＧの製造方法を提供できる。 ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of BBG with high content rate of BBG or its salt can be provided.
以下，本発明を実施するための形態について説明する。本発明は，以下に説明する形態に限定されるものではなく，以下の形態から当業者が自明な範囲で適宜修正したものも含む。 Hereinafter, modes for carrying out the present invention will be described. The present invention is not limited to the embodiments described below, but includes those appropriately modified by those skilled in the art from the following embodiments.
トリアリールメタン組成物
本発明のトリアリールメタン組成物は，式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩を少なくとも１つ含む。
Triarylmethane Composition The triarylmethane composition of the present invention contains at least one triarylmethane derivative represented by the formulas (1) to (3) and a pharmaceutically acceptable salt thereof.
式（１）〜（３）で示されるトリアリールメタン誘導体のうち式（１）で示されるものはブリリアントブル−Ｇ（ＢＢＧ）である。そして，式（２）及び（３）で示されるトリアリールメタン誘導体は，ＢＢＧを製造する際に，従来多く含まれ，ＢＢＧと区別されなかった化合物である。これらの化合物は，ＢＢＧの異性体であり分子量がＢＢＧと同じである。このため，これらの異性体は，合成されたＢＢＧを精製する際にも分離されなかったものと考えられる。また，これらの異性体が混合されたトリアリールメタン組成物からＢＢＧのみを抽出することは難しい。本発明は，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を，式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩中，９０重量％以上１００重量％以下含む。 Of the triarylmethane derivatives represented by formulas (1) to (3), the one represented by formula (1) is Brilliant Blue-G (BBG). The triarylmethane derivatives represented by the formulas (2) and (3) are compounds that have been conventionally included in the production of BBG and are not distinguished from BBG. These compounds are isomers of BBG and have the same molecular weight as BBG. For this reason, it is considered that these isomers were not separated when the synthesized BBG was purified. In addition, it is difficult to extract only BBG from a triarylmethane composition in which these isomers are mixed. The present invention relates to a brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof, a triarylmethane derivative represented by the formulas (1) to (3), a pharmaceutically acceptable salt thereof. In the salt to be contained, it is contained 90% by weight or more and 100% by weight or less.
上記式（１）〜（３）は，例えば水溶液中で，電離している状態の式（１）〜（３）で示されるトリアリールメタン誘導体を示している。本発明は，電離していない状態の式（１）〜（３）で示されるトリアリールメタン誘導体を含んでいてもよい。式（１）で示される化合物は，ブリリアントブル−Ｇ（ＢＢＧ）であり，ＢＢＧは，Ｎ−エチル−Ｎ−［４−［［４−［Ｎ−エチル−Ｎ−(３−ソジオスルホベンジル)アミノ]−２−メチルフェニル][４-[(４−エトキシフェニル)アミノ]フェニル]メチレン]−３−メチル−２,５−シクロヘキサジエン−１−イリデン]-３-スルホナトベンゼンメタンアミニウムともよばれる。式（２）及び（３）で示される化合物は，ＢＢＧの位置異性体である。 The above formulas (1) to (3) represent the triarylmethane derivatives represented by the formulas (1) to (3) in an ionized state, for example, in an aqueous solution. The present invention may include a triarylmethane derivative represented by the formulas (1) to (3) in a non-ionized state. The compound represented by the formula (1) is brilliant blue-G (BBG), and BBG is N-ethyl-N- [4-[[4- [N-ethyl-N- (3-sodiosulfobenzyl]. ) Amino] -2-methylphenyl] [4-[(4-ethoxyphenyl) amino] phenyl] methylene] -3-methyl-2,5-cyclohexadiene-1-ylidene] -3-sulfonatobenzenemethanaminium Also called. The compounds represented by formulas (2) and (3) are positional isomers of BBG.
この組成物のうち好ましいものは，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を，式（１）〜（３）で示されるトリアリールメタン誘導体，その薬学的に許容される塩中，９０重量％以上９９．９９重量％以下含むものであり，９０重量％以上９９．９重量％以下含むものでもよく，９０重量％以上９９重量％以下含むものでもよく，９０重量％以上９８重量％以下含むものでもよく，９０重量％以上９７重量％以下含むものでもよく，９０重量％以上９５重量％以下含むものでもよく，
９１重量％以上９９．９９重量％以下含むものであり，９１重量％以上９９．９重量％以下含むものでもよく，９１重量％以上９９重量％以下含むものでもよく，９１重量％以上９８重量％以下含むものでもよく，９１重量％以上９７重量％以下含むものでもよく，９１重量％以上９５重量％以下含むものでもよく，
９２重量％以上９９．９９重量％以下含むものであり，９２重量％以上９９．９重量％以下含むものでもよく，９２重量％以上９９重量％以下含むものでもよく，９２重量％以上９８重量％以下含むものでもよく，９２重量％以上９７重量％以下含むものでもよく，９２重量％以上９５重量％以下含むものでもよく，
９３重量％以上９９．９９重量％以下含むものであり，９３重量％以上９９．９重量％以下含むものでもよく，９３重量％以上９９重量％以下含むものでもよく，９３重量％以上９８重量％以下含むものでもよく，９３重量％以上９７重量％以下含むものでもよく，９３重量％以上９５重量％以下含むものでもよく，
９５重量％以上９９．９９重量％以下含むものであり，９５重量％以上９９．９重量％以下含むものでもよく，９５重量％以上９９重量％以下含むものでもよく，９５重量％以上９８重量％以下含むものでもよく，９５重量％以上９７重量％以下含むものでもよい。
Among these compositions, preferred are brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof, a triarylmethane derivative represented by the formulas (1) to (3), The pharmaceutically acceptable salt thereof contains 90% to 99.99% by weight, may contain 90% to 99.9% by weight, and contains 90% to 99% by weight Or 90 wt% to 98 wt%, 90 wt% to 97 wt%, or 90 wt% to 95 wt%,
91 wt% or more and 99.99 wt% or less, 91 wt% or more and 99.9 wt% or less may be included, 91 wt% or more and 99 wt% or less may be included, 91 wt% or more and 98 wt% or less The following may be included, may be included 91% to 97% by weight, may be included 91% to 95% by weight,
92 wt% or more and 99.99 wt% or less, 92 wt% or more and 99.9 wt% or less may be included, 92 wt% or more and 99 wt% or less may be included, 92 wt% or more and 98 wt% or less The following may be included, may be included 92% to 97% by weight, may be included 92% to 95% by weight,
93 wt% or more and 99.99 wt% or less, 93 wt% or more and 99.9 wt% or less may be included, 93 wt% or more and 99 wt% or less may be included, 93 wt% or more and 98 wt% or less The following may be included, may be 93% by weight or more and 97% by weight or less, may be 93% by weight or more and 95% by weight or less,
95 wt% or more and 99.99 wt% or less, 95 wt% or more and 99.9 wt% or less may be included, 95 wt% or more and 99 wt% or less may be included, 95 wt% or more and 98 wt% or less It may be contained below, or may be contained 95% by weight or more and 97% by weight or less.
式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩は，たとえば水溶液中では電離しており，その際の化学式は（１）とは異なるものも存在する。しかし，それらの形態は，当業者にとって自明であり，電離しているものや電離していないもの，も当然式（１）で示されるＢＢＧ又はその塩に含まれる。さらに，ＢＢＧ又はその塩は，溶媒和物となる場合がありうる（例えば水和物）このような形態のものも，実質的には水溶液中でＢＢＧ又はその塩とおなじ挙動を示すため，式（１）で示されるＢＢＧ又はその塩に含まれる。 Brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof is ionized, for example, in an aqueous solution, and there are some chemical formulas different from those in (1). However, those forms are obvious to those skilled in the art, and those that are ionized and those that are not ionized are naturally included in the BBG represented by the formula (1) or a salt thereof. Further, BBG or a salt thereof may be a solvate (for example, a hydrate). Such a form also exhibits substantially the same behavior as BBG or a salt thereof in an aqueous solution. It is contained in BBG or a salt thereof represented by (1).
薬理学的に許容される塩の例は，無機塩基，アンモニア，有機塩基，無機酸，有機酸，塩基性有機酸，ハロゲンイオン等から成る塩，及び分子内塩を含む。無機塩基の例はアルカリ金属（Ｎａ，Ｋ等）及びアルカリ土類金属（Ｃａ，Ｍｇ等）を含む。有機塩基の例はトリメチルアミン，トリエチルアミン，コリン，プロカイン，エタノ−ルアミン等を含む。無機酸の例は，塩酸，臭化水素酸，硫酸，硝酸，及びリン酸等を含む。有機酸の例はｐ−トルエンスルホン酸，メタンスルホン酸，蟻酸，トリフルオロ酢酸及びマレイン酸等を含む。塩基性アミノ酸の例はリジン，アルギニン，オルニチン，ヒスチジン等を含む。 Examples of pharmacologically acceptable salts include salts composed of inorganic bases, ammonia, organic bases, inorganic acids, organic acids, basic organic acids, halogen ions and the like, and inner salts. Examples of inorganic bases include alkali metals (Na, K, etc.) and alkaline earth metals (Ca, Mg, etc.). Examples of organic bases include trimethylamine, triethylamine, choline, procaine, ethanolamine and the like. Examples of inorganic acids include hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid and the like. Examples of organic acids include p-toluenesulfonic acid, methanesulfonic acid, formic acid, trifluoroacetic acid, maleic acid and the like. Examples of basic amino acids include lysine, arginine, ornithine, histidine and the like.
眼膜除去を行う際の眼膜染色のための染色組成物
上記のトリアリールメタン組成物は，眼膜除去を行う際の眼膜染色のための染色組成物の有効成分として用いることができる。すなわち，特許文献１に開示される通り，ＢＢＧ又はその塩は，眼膜除去を行う際の眼膜染色のための染色組成物の有効成分（染料）として有効である。
Dyeing composition for ophthalmic staining when removing ocular membrane The triarylmethane composition described above can be used as an active ingredient of a staining composition for ophthalmic staining when removing ophthalmic membrane. That is, as disclosed in Patent Document 1, BBG or a salt thereof is effective as an active ingredient (dye) of a staining composition for staining the eye membrane when removing the eye membrane.
本発明の好ましい態様の一つによれば，染色組成物は，黄斑円孔，高度近視性（ｈｙｍｙｏｐｉｃ）黄斑円孔による網膜剥離，網膜上膜，増殖性の糖尿病性網膜症，糖尿病性黄斑浮腫，増殖性硝子体網膜症，過熟白内障及び先天性白内障のように特異的な白内障といった硝子体網膜疾患，及び分層角膜移植等，眼球の疾患の眼科手術において外科的アジュバントとして利用できる。本発明の染色組成物に従えば，識別し難い眼膜をより明確に確認し，外科手術中の安全性を向上させることができる。 According to one of the preferred embodiments of the present invention, the staining composition comprises a macular hole, retinal detachment due to highly myopic macular hole, epiretinal membrane, proliferative diabetic retinopathy, diabetic macular edema. It can be used as a surgical adjuvant in ophthalmic surgery for ocular diseases such as proliferative vitreoretinopathy, vitreous retinal diseases such as specific cataracts such as premature cataract and congenital cataract, and stratified corneal transplantation. According to the staining composition of the present invention, it is possible to more clearly confirm an ophthalmic membrane that is difficult to identify, and improve safety during surgery.
本発明のより好ましい態様においては，染色組成物は眼膜，より好ましくは，内境界膜又は前嚢の染色に用いることができる。 In a more preferred embodiment of the present invention, the staining composition can be used for staining the ophthalmic membrane, more preferably the inner limiting membrane or the anterior capsule.
また，本発明の態様の一つによれば，本発明の染色組成物は薬理学的に許容される担体と組み合わせて用いることができる。溶解液及び薬品粉末との一式として，あるいは注射器中に満たされた溶液の形として，及びヒアルロン酸と組み合わせてゲル状溶液として調合できる。最も好ましくは，溶液として調合されるが，必ずしもこれに限定されない。 According to one aspect of the present invention, the staining composition of the present invention can be used in combination with a pharmacologically acceptable carrier. It can be formulated as a solution with solution and drug powder or in the form of a solution filled in a syringe and in combination with hyaluronic acid as a gel solution. Most preferably, it is formulated as a solution, but is not necessarily limited thereto.
本発明の態様の一つによれば，前記染色組成物は薬学的に許容される溶液として調合されるが，必ずしもこれに限定されない。これはＢＢＧの直接かつ容易に眼内洗浄液に溶解され，またシリンジフィルタ−によって滅菌できるという特性による。 According to one aspect of the present invention, the staining composition is formulated as a pharmaceutically acceptable solution, but is not necessarily limited thereto. This is due to the property that BBG can be directly and easily dissolved in an intraocular cleaning solution and sterilized by a syringe filter.
更に，本発明の態様の一つによれば，前記染色組成物は眼内灌流液，平衡塩類溶液（ＢＳＳ），生理食塩水，あるいは最も好ましくは，眼内灌流液（眼内洗浄液）であるＯＰＥＧＵＡＲＤ−ＭＡ（千寿製薬株式会社，大阪府，日本）に溶解した溶液として調合できる。しかしながら，必ずしもこの形式に限定されない。 Furthermore, according to one of the embodiments of the present invention, the staining composition is an intraocular perfusate, a balanced salt solution (BSS), physiological saline, or most preferably an intraocular perfusate (intraocular washing solution). It can be prepared as a solution dissolved in OPEGUARD-MA (Senju Pharmaceutical Co., Ltd., Osaka Prefecture, Japan). However, it is not necessarily limited to this format.
更に，本発明の染色組成物の態様の一つによれば，浸透圧が２９８ｍＯｓｍ近傍であることが好ましい。この態様によれば，本発明の染色組成物は生理食塩水に等しい浸透圧である。以前ＩＣＧによる網膜色素上皮の障害はその溶液の低浸透圧性に由来する可能性があることが報告されていた。これに関連して，本発明の一つの態様における染色組成物は，網膜色素上皮において浸透圧の差により起こる障害といった，細胞膨張あるいは脱水症状に関する組織障害（細胞脱落あるいは細胞死等）を引き起こさないという点において，優れた効果を有する。 Furthermore, according to one aspect of the dyeing composition of the present invention, the osmotic pressure is preferably in the vicinity of 298 mOsm. According to this embodiment, the staining composition of the present invention has an osmotic pressure equal to that of physiological saline. Previously, it was reported that damage to the retinal pigment epithelium by ICG may be due to the hypoosmolarity of the solution. In this regard, the staining composition according to one embodiment of the present invention does not cause tissue damage (cell loss or cell death) related to cell swelling or dehydration, such as damage caused by osmotic pressure differences in the retinal pigment epithelium. In this respect, it has an excellent effect.
本発明の好ましい態様の一つにおいては，本発明の染色組成物は中性のｐＨ，すなわち，ｐＨ＝７．４近傍のｐＨを示すことが望ましい。 In one preferred embodiment of the present invention, it is desirable that the dyeing composition of the present invention exhibits a neutral pH, that is, a pH in the vicinity of pH = 7.4.
この側面の剤に関連して，患者の目にこの剤を投与し，眼膜を染色し，染色した眼膜を除去する方法が提供される。この方法はＢＢＧ又はその塩を含む染色組成物を調整するステップと予め規定された濃度の染色組成物を用いて眼膜を染色するステップと，染色された眼膜を除去するステップとを含む。すなわち，この側面の剤は，眼科手術のための外科的アジュバントとして利用できる。本発明の好ましい態様の一つとして，前記眼科手術は哺乳類の眼球に対して施行され，より好ましくは，ヒトの眼球に対して施行される。 In connection with this aspect of the agent, a method is provided for administering the agent to the patient's eye, staining the eye membrane, and removing the stained eye membrane. The method includes the steps of preparing a staining composition comprising BBG or a salt thereof, staining the ophthalmic membrane with a pre-defined concentration of the staining composition, and removing the stained ophthalmic membrane. That is, the agent of this aspect can be used as a surgical adjuvant for ophthalmic surgery. As one of the preferred embodiments of the present invention, the ophthalmic surgery is performed on a mammalian eyeball, more preferably on a human eyeball.
更に，本発明の態様の一つにおいて，前記染色組成物及び／あるいはそれを利用する染色法は眼科手術の一部として適切に用いられる。本発明の好ましい態様により，先述の眼科疾患手術は黄斑円孔，近視性黄斑円孔による網膜剥離，網膜上膜，増殖性糖尿病網膜症，糖尿病性黄斑浮腫，増殖性硝子体網膜症，成熟白内障及び先天性白内障等の特異的白内障，及び分層角膜移植等の治療に行われる外科手術であり，最も好ましくは，硝子体−網膜疾患（特に黄斑円孔及び網膜上膜（ＥＲＭＳ））及び白内障に対して行われるものである。 Furthermore, in one of the embodiments of the present invention, the staining composition and / or the staining method using the same is appropriately used as part of ophthalmic surgery. According to a preferred embodiment of the present invention, the above-mentioned ophthalmic disease surgery is performed for macular hole, retinal detachment due to myopic macular hole, epiretinal membrane, proliferative diabetic retinopathy, diabetic macular edema, proliferative vitreoretinopathy, mature cataract And surgical procedures for the treatment of specific cataracts such as congenital cataracts, and keratoplasty, most preferably vitreous-retinal diseases (especially macular hole and epiretinal membrane (ERMS)) and cataracts Is to be done.
この側面の剤に関連して，眼科疾患の治療のための染色組成物の製造するためのＢＢＧ又はその塩の使用をも提供できる。特に，本発明は，眼膜除去のための染色組成物を製造するためのＢＢＧ又はその塩の使用をも提供できる。 In connection with the agent of this aspect, the use of BBG or a salt thereof for the manufacture of a staining composition for the treatment of ophthalmic diseases can also be provided. In particular, the present invention can also provide the use of BBG or a salt thereof for producing a staining composition for removing the eye membrane.
次に，本発明の剤におけるＢＢＧの投与量について説明する。本発明の薬剤は，ＢＢＧを０．１−１０ｍｇ／ｍｌ，好ましくは０．１−１．０ｍｇ／ｍｌの濃度，最も好ましくは０．１−０．２５ｍｇ／ｍｌの濃度で含有することが望ましい。染色組成物中のＢＢＧは０．２５ｍｇ／ｍｌの低濃度で充分な染色作用を得ることができる。 Next, the dose of BBG in the agent of the present invention will be described. The drug of the present invention should contain BBG at a concentration of 0.1-10 mg / ml, preferably 0.1-1.0 mg / ml, most preferably 0.1-0.25 mg / ml. . BBG in the dyeing composition can obtain a sufficient dyeing action at a low concentration of 0.25 mg / ml.
本発明の薬剤の剤型は特に限定されない。剤型の例は注射剤である。また，先に説明した特許文献に開示された剤型とすることで，眼内に局所投与することができる。注射剤を製造するためには，公知の担体（水等）と有効成分を混合して，シリンジに封入すればよい。剤型の製造方法は，公知の方法を適宜用いることができる。 The dosage form of the drug of the present invention is not particularly limited. An example of the dosage form is an injection. Moreover, it can administer locally in an eye by setting it as the dosage form disclosed by the patent document demonstrated previously. In order to produce an injection, a known carrier (such as water) and an active ingredient may be mixed and sealed in a syringe. A known method can be appropriately used as a method for producing the dosage form.
本発明の神経保護剤は，経口投与されてもよい。この場合，公知の担体に有効成分であるＢＢＧ又はその塩を混合し，打錠機で打錠することで製剤化できる。 The neuroprotective agent of the present invention may be administered orally. In this case, it can be formulated by mixing BBG or a salt thereof as an active ingredient with a known carrier and tableting with a tableting machine.
本発明の薬剤が，染色組成物として利用される場合は，施術個所に適量を投与すればよい。たとえば，注射剤である本発明の剤を１ｃｃ以上１ｍｌ以下投与すればよい。本発明の薬剤を神経保護剤又は抗炎症剤として用いる場合は，たとえば１日当たり１回〜３回を所定期間投与すればよい。 When the agent of the present invention is used as a staining composition, an appropriate amount may be administered to the treatment site. For example, the agent of the present invention that is an injection may be administered in the range of 1 cc to 1 ml. When the agent of the present invention is used as a neuroprotective agent or anti-inflammatory agent, it may be administered, for example, 1 to 3 times per day for a predetermined period.
ＢＢＧ又はその塩の製造方法（基本合成スキ−ム）
次に，ＢＢＧ又はその塩の製造方法を説明する。この基本となるＢＢＧ又はその塩の製造方法は，以下の３つの工程をこの順に含む。これらの工程の前後には，別の工程が含まれてもよい。
式Ａ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）をベンジル化試薬と反応させ，式Ａ２で示される化合物を得る（ベンジル化工程）。
式Ａ２で示される化合物に三酸化硫黄又は硫酸を作用させ，式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る。
式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体から，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る。
Method for producing BBG or a salt thereof (basic synthesis scheme)
Next, a method for producing BBG or a salt thereof will be described. This basic method for producing BBG or a salt thereof includes the following three steps in this order. Another process may be included before and after these processes.
Ethyl-m-tolylamine represented by formula A1 is reacted with a benzylating reagent to obtain a compound represented by formula A2 (benzylation step).
Sulfur trioxide or sulfuric acid is allowed to act on the compound represented by the formula A2 to obtain a benzylethyl-m-tolylamine derivative represented by the formula A3.
Brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof is obtained from the benzylethyl-m-tolylamine derivative represented by the formula A3.
上記式中Ｘ１１は，水素原子，水酸基，アルカリ金属原子で水素原子が置換された水酸基，アルカリ金属原子又はハロゲン原子を示す。Ｘ１１の好ましい例は，水素原子である。アルカリ金属原子で水素原子が置換された水酸基は，例えば，−ＯＮａのように，水酸基の水素原子がアルカリ金属により置換された基を意味する。アルカリ金属の例は，Ｎａ及びＫである。ハロゲン原子の例は，Ｆ，Ｃｌ，Ｂｒ及びＩである。 In the above formula, X 11 represents a hydrogen atom, a hydroxyl group, a hydroxyl group, an alkali metal atom or a halogen atom in which a hydrogen atom is substituted with an alkali metal atom. A preferred example of X 11 is a hydrogen atom. A hydroxyl group in which a hydrogen atom is substituted with an alkali metal atom means a group in which the hydrogen atom of the hydroxyl group is substituted with an alkali metal, such as -ONa. Examples of alkali metals are Na and K. Examples of halogen atoms are F, Cl, Br and I.
上記式中Ｘ１２は，水素原子，水酸基，アルカリ金属原子で水素原子が置換された水酸基，アルカリ金属原子又はハロゲン原子を示す。Ｘ１２の好ましい例は，水素原子又はナトリウム原子である。 In the above formula, X 12 represents a hydrogen atom, a hydroxyl group, a hydroxyl group, an alkali metal atom or a halogen atom in which a hydrogen atom is substituted with an alkali metal atom. A preferred example of X 12 is a hydrogen atom or a sodium atom.
式Ａ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）をベンジル化試薬と反応させ，式Ａ２で示される化合物を得る工程Reacting ethyl-m-tolylamine of formula A1 with a benzylating reagent to obtain a compound of formula A2
この工程は，たとえば，希ガス雰囲気下，アルカリ性にした有機溶媒中にＡ１で示される化合物を加え，ハロゲン原子が付加したベンジル化試薬を攪拌しつつ滴下し，攪拌状態を維持すればよい。希ガスの例はアルゴンである。有機溶媒の例は，アセトニトリルなどの極性溶媒である。アルカリ化剤の例は，炭酸カリウムである。反応は１０℃以上３５℃以下（例えば室温下）に行えばよい。攪拌時間の例は，１時間以上１日以下である。反応は通常気圧下に行えばよい。 In this step, for example, a compound represented by A1 may be added to an alkaline organic solvent under a rare gas atmosphere, and the benzylating reagent to which a halogen atom is added may be added dropwise with stirring to maintain the stirring state. An example of a noble gas is argon. An example of an organic solvent is a polar solvent such as acetonitrile. An example of an alkalinizing agent is potassium carbonate. The reaction may be performed at 10 ° C. or higher and 35 ° C. or lower (for example, at room temperature). The example of stirring time is 1 hour or more and 1 day or less. The reaction may be usually performed under atmospheric pressure.
アルカリ化剤は，例えば，Ａ１で示される化合物の半分のモル数以上２倍のモル数以下を用いればよい。ハロゲン原子が付加したベンジル化試薬は，ベンジル化試薬のうち水素原子がハロゲン原子に置換されている化合物を意味する。ハロゲン原子が付加したベンジル化試薬の例は，臭化ベンジル，塩化ベンジル，及びフッ化ベンジルである。ハロゲン原子が付加したベンジル化試薬は，例えば，Ａ１で示される化合物の半分のモル数以上２倍のモル数以下を用いればよい。 For example, the alkalinizing agent may be used in an amount of not less than half and not more than twice the number of moles of the compound represented by A1. The benzylation reagent to which a halogen atom is added means a compound in which a hydrogen atom is substituted with a halogen atom in the benzylation reagent. Examples of benzylating reagents to which halogen atoms have been added are benzyl bromide, benzyl chloride, and benzyl fluoride. The benzylation reagent to which a halogen atom is added may be used, for example, at least half the number of moles of the compound represented by A1 and at most twice the number of moles.
式Ａ２で示される化合物に三酸化硫黄又は硫酸を作用させ，式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程A step of reacting a compound represented by the formula A2 with sulfur trioxide or sulfuric acid to obtain a benzylethyl-m-tolylamine derivative represented by the formula A3
この工程は，先の工程で得られたＡ２で示される化合物に対して，例えば，氷冷下，三酸化硫黄又は硫酸を作用させ，式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程である。三酸化硫黄として，発煙硫酸を用いてもよい。具体的に説明すると，Ａ２で示される化合物を氷冷下，濃硫酸で溶液を希釈する。その後，氷冷下，発煙硫酸を時間をかけて滴下する。その後，室温又は湯浴中（例えば１００℃）にて，攪拌し，反応を進行させる。滴下時間の例は，５分以上１時間以下である。攪拌時間の例は，２時間以上１日以下である。 In this step, for example, sulfur trioxide or sulfuric acid is allowed to act on the compound represented by A2 obtained in the previous step under ice cooling to obtain a benzylethyl-m-tolylamine derivative represented by Formula A3. It is. Fuming sulfuric acid may be used as sulfur trioxide. More specifically, the solution represented by A2 is diluted with concentrated sulfuric acid under ice cooling. Then, add fuming sulfuric acid dropwise over time under ice cooling. Thereafter, the reaction is allowed to proceed by stirring at room temperature or in a hot water bath (eg, 100 ° C.). The example of dripping time is 5 minutes or more and 1 hour or less. An example of the stirring time is 2 hours or more and 1 day or less.
攪拌後，適宜アルカリ（例えば，水酸化ナトリウムや炭酸水素ナトリウム）を攪拌しつつ滴下し，適宜乾燥させることで，Ａ３で示される化合物の塩（例えば，Ｘ１２がナトリウムのもの）を得ることができる。 After stirring, appropriate alkali (e.g., sodium or sodium bicarbonate hydroxide) was added dropwise with stirring, by appropriately dried, to obtain the salt of the compound represented by A3 (e.g., those X 12 is sodium) it can.
この工程では，Ａ３で示される化合物をセシウム塩化することで，純度を上げて，異性体の含有量を軽減することが好ましい。Ａ３で示される化合物をセシウム塩化するためには，例えば，式Ａ３で示される化合物とセシウム化合物（例えば炭酸セシウム）とを反応させればよい。 In this step, it is preferable to increase the purity and reduce the content of isomers by cesium chloride of the compound represented by A3. In order to cesium chloride the compound represented by A3, for example, a compound represented by Formula A3 and a cesium compound (for example, cesium carbonate) may be reacted.
式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体から，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程Step of obtaining brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof from the benzylethyl-m-tolylamine derivative represented by the formula A3
式Ａ３で示される化合物から，ＢＢＧ又はその塩を得るためには，例えば以下の工程を行えばよい。
まず，式Ａ３で示される化合物を下記式Ａ３−１で示される化合物を介して２つ結合する。
In order to obtain BBG or a salt thereof from the compound represented by Formula A3, for example, the following steps may be performed.
First, two compounds represented by the formula A3 are bonded via a compound represented by the following formula A3-1.
上記式中Ｘ１３は，ハロゲン原子を示す。Ｘ１３の好ましい例は，塩素原子又は臭素原子である。 In the above formula, X 13 represents a halogen atom. A preferred example of X 13 is a chlorine atom or a bromine atom.
上記の工程では，式Ａ３で示される化合物２モルと，式Ａ３−１で示される化合物１モルとを反応させる工程である。このため，式Ａ３で示される化合物と式Ａ３−１で示される化合物の割合はおよそ２：１（２／１）であることが好ましく，１．５以上２．５以下でもよいし，１．８以上２．２以下でもよい。 In the above step, 2 mol of the compound represented by Formula A3 is reacted with 1 mol of the compound represented by Formula A3-1. Therefore, the ratio of the compound represented by Formula A3 and the compound represented by Formula A3-1 is preferably about 2: 1 (2/1), and may be 1.5 or more and 2.5 or less. It may be 8 or more and 2.2 or less.
上記の工程は，アルコール溶媒中にて行うことが極めて望ましい。アルコールの例は，メタノール，エタノール及びブタノールであり，好ましいアルコールは（希釈）エタノールである。この工程は，酸性化剤を用いて溶液を酸性（例えば，ｐＨ０．３以上１以下）とした状況下において反応を行うことが望ましい。酸性化剤の例は，塩酸，濃塩酸，濃硫酸，及び濃硝酸である。これらの中では塩酸又は濃塩酸が好ましい。式Ａ３−１で示される化合物を滴下した後，１００℃以上１４０℃以下の状況で１０時間以上２００時間以下攪拌を行うことが好ましい。反応液を１５℃以上３５℃以下（たとえば室温）に戻した後に，アルカリを添加する。アルカリの例は水酸化ナトリウム水溶液である。アルカリを添加し，ｐＨが０．５以上１．５以下となるように調整する。得られた析出物を精製することで，Ａ４の結晶を得ることができる。 It is highly desirable to perform the above steps in an alcohol solvent. Examples of alcohols are methanol, ethanol and butanol, with the preferred alcohol being (diluted) ethanol. In this step, it is desirable to carry out the reaction under the condition that the solution is made acidic (for example, pH 0.3 or more and 1 or less) using an acidifying agent. Examples of acidifying agents are hydrochloric acid, concentrated hydrochloric acid, concentrated sulfuric acid, and concentrated nitric acid. Of these, hydrochloric acid or concentrated hydrochloric acid is preferred. After dripping the compound represented by Formula A3-1, it is preferable to perform stirring for 10 hours to 200 hours in a state of 100 ° C. or higher and 140 ° C. or lower. An alkali is added after returning a reaction liquid to 15 to 35 degreeC (for example, room temperature). An example of an alkali is an aqueous sodium hydroxide solution. Add alkali and adjust the pH to 0.5 to 1.5. By purifying the obtained precipitate, A4 crystals can be obtained.
次に，式Ａ４で示される化合物から反応性の高い式Ａ５で示される化合物を得る。 Next, a highly reactive compound represented by Formula A5 is obtained from the compound represented by Formula A4.
上記式中Ｘ１２’は，アルカリ金属原子を示す。Ｘ１２’の好ましい例は，カリウム原子，又はナトリウム原子である。 In the above formula, X 12 ′ represents an alkali metal atom. A preferred example of X 12 ′ is a potassium atom or a sodium atom.
この工程は，酸性の極性溶媒を用いて，式Ａ４で示される化合物に酸化剤を作用させればよい。極性溶媒の例は，アセトニトリルと水の混合溶媒である。溶媒の酸性度の例は，ｐＨ１．５以上３以下である。酸化剤の例は，ＣＡＮである。この工程は，後述する実施例を参考にして適宜条件を調整すればよい。 In this step, an oxidizing agent may be allowed to act on the compound represented by Formula A4 using an acidic polar solvent. An example of a polar solvent is a mixed solvent of acetonitrile and water. An example of the acidity of the solvent is pH 1.5 or more and 3 or less. An example of an oxidant is CAN. Conditions for this step may be adjusted as appropriate with reference to examples described later.
次に，式Ａ５で示される化合物にパラ−フェネチジンを作用させ，式Ａ６で示されるＢＢＧを得る。 Next, para-phenetidine is allowed to act on the compound represented by Formula A5 to obtain BBG represented by Formula A6.
式Ａ５で示される化合物とパラ−フェネチジンとは，１：１で反応するため式Ａ５で示される化合物とパラ−フェネチジンとはおよそ１（１／１）の割合であればよく，０．８以上１．２以下でもよく，０．９以上１．１以下でもよい。 Since the compound represented by Formula A5 and para-phenetidine react at 1: 1, the compound represented by Formula A5 and para-phenetidine may be in a ratio of about 1 (1/1), 0.8 or more It may be 1.2 or less, or 0.9 or more and 1.1 or less.
このようにして得られるＢＢＧ又はその塩は，適宜精製することで，異性体の混合割合が低いＢＢＧ又はその塩を得ることができる、 The BBG or salt thereof thus obtained can be appropriately purified to obtain BBG or a salt thereof with a low mixing ratio of isomers.
ＢＢＧ又はその塩の製造方法（プランＣ−１及びＣ−２）
次に，ＢＢＧ又はその塩を製造するための上記とは別の例を説明する。
この方法は，式Ｂ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）を，ハロゲン原子が付加したベンジル化試薬と反応させ，式Ｂ２で示されるハロゲン化化合物を得る工程と，
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体とアルカリを反応させ，式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体から，式１で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と，
を含む。
Method for producing BBG or a salt thereof (plans C-1 and C-2)
Next, an example different from the above for producing BBG or a salt thereof will be described.
In this method, ethyl-m-tolylamine represented by formula B1 is reacted with a benzylating reagent to which a halogen atom has been added to obtain a halogenated compound represented by formula B2.
Substituting a halogen atom of the halogenated compound represented by formula B2 to obtain a benzylethyl-m-tolylamine derivative represented by formula B3;
Reacting a benzylethyl-m-tolylamine derivative represented by formula B3 with an alkali to obtain a benzylethyl-m-tolylamine derivative represented by formula B4;
Obtaining brilliant blue-G (BBG) represented by formula 1 or a pharmaceutically acceptable salt thereof from a benzylethyl-m-tolylamine derivative represented by formula B4;
including.
式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体から，式１で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程は，先に説明した式Ａ３で示される化合物から，式１で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と同様である。 The step of obtaining brilliant blue-G (BBG) represented by the formula 1 or a pharmaceutically acceptable salt thereof from the benzylethyl-m-tolylamine derivative represented by the formula B4 is a compound represented by the formula A3 described above. From this, it is the same as the step of obtaining brilliant blue-G (BBG) represented by formula 1 or a pharmaceutically acceptable salt thereof.
上記式中Ｘ２１は，ハロゲン原子を示す。Ｘ２１の好ましい例は，塩素原子又は臭素原子であり，臭素原子が好ましい。
Ｘ２２は，ハロゲン原子を示。Ｘ２２の好ましい例は，塩素原子又は臭素原子であり，塩素原子が好ましい。
Ｘ３３は，水素原子，水酸基，アルカリ金属原子で水素原子が置換された水酸基，アルカリ金属原子又はハロゲン原子を示す。Ｘ２３の好ましい例は，水素原子又はナトリウム塩である。
In the above formula, X 21 represents a halogen atom. A preferred example of X 21 is a chlorine atom or a bromine atom, and a bromine atom is preferred.
X 22 represents a halogen atom. A preferable example of X 22 is a chlorine atom or a bromine atom, and a chlorine atom is preferable.
X 33 represents a hydrogen atom, a hydroxyl group, a hydroxyl group, an alkali metal atom or a halogen atom in which a hydrogen atom is substituted with an alkali metal atom. A preferred example of X 23 is a hydrogen atom or a sodium salt.
式Ｂ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）を，ハロゲン原子が付加したベンジル化試薬と反応させ，式Ｂ２で示されるハロゲン化化合物を得る工程Reacting ethyl-m-tolylamine represented by formula B1 with a benzylating reagent to which a halogen atom has been added to obtain a halogenated compound represented by formula B2
この工程は，実施例２においてその具体例が開示されている。ハロゲン原子が付加したベンジル化試薬の例は，Ｘ２１−Ｐｈ−ＣＨ２−Ｘ２１１で示される化合物である。基Ｘ２１−は，基−ＣＨ２−Ｘ２１１のメタ位置に存在するものが好ましい。Ｐｈはベンゼン環を意味する。Ｘ２１は，先に定義をしたものと同様であり，Ｘ２１１は，Ｘ２１と同一でも異なってもよく，ハロゲン原子を示す。式Ｂ１で示される化合物（これは式Ａ１で示される化合物と同じ）と，ハロゲン原子が付加したベンジル化試薬とは，１：１で反応するため式Ｂ１で示される化合物とハロゲン原子が付加したベンジル化試薬とはおよそ１（１／１）の割合であればよく，０．８以上１．２以下でもよく，０．９以上１．１以下でもよい。 A specific example of this process is disclosed in Example 2. An example of a benzylating reagent to which a halogen atom is added is a compound represented by X 21 —Ph—CH 2 —X 211 . The group X 21 — is preferably present at the meta position of the group —CH 2 —X 211 . Ph means a benzene ring. X 21 is the same as defined above, and X 211 may be the same as or different from X 21 and represents a halogen atom. The compound represented by Formula B1 (this is the same as the compound represented by Formula A1) and the benzylating reagent to which a halogen atom was added reacted 1: 1, so that the compound represented by Formula B1 and a halogen atom were added. The benzylation reagent may be a ratio of about 1 (1/1), may be 0.8 or more and 1.2 or less, and may be 0.9 or more and 1.1 or less.
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程A step of substituting a halogen atom of the halogenated compound represented by Formula B2 to obtain a benzylethyl-m-tolylamine derivative represented by Formula B3
この工程は，以下に説明するように主に２つの系統を採用できる。１つの系統は，
式Ｂ２で示されるハロゲン化化合物に硫化物を作用させ，式Ｂ２−１で示される化合物を得る工程と，
式Ｂ２−１で示される化合物に求電子試薬ＳＯ２Ｃｌ２を作用させ，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体であってＸ２が塩素原子であるものを得る工程を含む。
This process can mainly employ two systems as described below. One system is
A step of allowing a sulfide to act on the halogenated compound represented by formula B2 to obtain a compound represented by formula B2-1;
A step of allowing an electrophile SO 2 Cl 2 to act on the compound represented by Formula B2-1 to obtain a benzylethyl-m-tolylamine derivative represented by Formula B3, wherein X 2 is a chlorine atom.
上記式においてＲ２１は，フェニル基又はベンジル基であるか，メチル基，エチル基，水酸基，ハロゲン原子で置換されてもよいフェニル基又はベンジル基を示す。Ｒ２１の好ましい例は，ベンジル基である。 In the above formula, R 21 represents a phenyl group or a benzyl group, or a phenyl group or a benzyl group which may be substituted with a methyl group, an ethyl group, a hydroxyl group or a halogen atom. A preferred example of R 21 is a benzyl group.
式Ｂ２で示されるハロゲン化化合物に硫化物を作用させ，式Ｂ２−１で示される化合物を得る工程における硫化物の例は，式ＨＳＲ２１で示される化合物である。この工程は塩基の存在下において行ってもよい。 Reacted with sulfide halogenated compounds of formula B2, examples of sulfide in the step of obtaining a compound represented by the formula B2-1 is a compound of formula HSR 21. This step may be performed in the presence of a base.
式Ｂ２−１で示される化合物に求電子試薬ＳＯ２Ｃｌ２を作用させ，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体であってＸ２が塩素原子であるものを得る工程は，酸の存在下に行ってもよい。 The step of reacting the compound represented by formula B2-1 with an electrophile SO 2 Cl 2 to obtain a benzylethyl-m-tolylamine derivative represented by formula B3, wherein X 2 is a chlorine atom, You may go in the presence.
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る２つめの系統は，
（２）式Ｂ２で示されるハロゲン化化合物とグリニャ−ル試薬を作用させ，ＳＯ２を作用させた後に，ハロゲンイオンと作用させることで，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程である。ハロゲンイオンは，例えば，Ｎ−クロロスクシンイミドに由来する塩化物イオンである。この工程は，実施例３において説明されているものであり，実施例３に基づいて適宜調整すればよい。
The second system for obtaining the benzylethyl-m-tolylamine derivative represented by the formula B3 by substituting the halogen atom of the halogenated compound represented by the formula B2 is:
(2) A benzylethyl-m-tolylamine derivative represented by the formula B3 is obtained by reacting the halogenated compound represented by the formula B2 with a Grignard reagent, reacting with SO 2 and then reacting with a halogen ion. It is a process. The halogen ion is, for example, a chloride ion derived from N-chlorosuccinimide. This process is described in the third embodiment, and may be appropriately adjusted based on the third embodiment.
式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体とアルカリを反応させ，式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程Reacting a benzylethyl-m-tolylamine derivative represented by formula B3 with an alkali to obtain a benzylethyl-m-tolylamine derivative represented by formula B4
アルカリは，例えばＨＯＸ２３で示される化合物である。アルカリの具体的な例は，水酸化ナトリウムである。 Alkali is a compound represented by the example HOX 23. A specific example of an alkali is sodium hydroxide.
式Ａ１から式Ａ２（ＩｎｔＢＢＧ−０１からＩｎｔＢＢＧ−０２）の合成Synthesis of Formula A1 to Formula A2 (IntBBG-01 to IntBBG-02)
アルゴン気流下，２ＬコルベンにＩｎｔ ＢＢＧ−０１：７６．１グラム （０．５６２９ｍｏｌ，ＴＣＩ），Ｋ２ＣＯ３: １１６．７グラム（０．８４４３ｍｍｏｌ），アセトニトリル（ＭｅＣＮ）：５６０ｍＬを仕込み，臭化ベンジル（ＢｎＢｒ）（ＴＣＩ）：１０５．９ｇ （０．６１９１ｍｏｌ） を１８℃にて添加後（発熱なし），室温で４時間撹拌した（徐々に反応熱がでて内温：２８℃まで上昇した）。 Under a stream of argon, 2 L Kolben was charged with Int BBG-01: 76.1 grams (0.5629 mol, TCI), K 2 CO 3 : 116.7 grams (0.8443 mmol), acetonitrile (MeCN): 560 mL, and brominated. Benzyl (BnBr) (TCI): 105.9 g (0.6191 mol) was added at 18 ° C. (no exotherm), followed by stirring at room temperature for 4 hours (the reaction heat gradually increased and the internal temperature rose to 28 ° C. ).
ＨＰＬＣにて反応を確認後，不溶物をろ別し，ろ液を減圧濃縮した（バス温：３５〜４５℃）。得られた濃縮残渣にＡｃＯＥｔ：１．２Ｌ，水：４００ｍＬを添加し，抽出した。得られた有機層を塩水（ｂｒｉｎｅ）：２００ｍＬで洗浄後，Ｎａ２ＳＯ４乾燥後，減圧濃縮（バス温：３５〜４５℃）した。 After confirming the reaction by HPLC, insoluble matters were filtered off, and the filtrate was concentrated under reduced pressure (bath temperature: 35 to 45 ° C.). AcOEt: 1.2 L and water: 400 mL were added to the resulting concentrated residue for extraction. The obtained organic layer was washed with brine (200 mL), dried over Na 2 SO 4 , and concentrated under reduced pressure (bath temperature: 35 to 45 ° C.).
得られた残渣（１３８．２ｇ）をシリカゲルカラムクロマトグラフィ−（Ｎ６０シリカゲル１．１ｋg，ＣＨＣｌ３／Ｈｅｐ＝１／２〜１／１０）で精製し，粗体のＩｎｔ. ＢＢＧ−０２：１２５．７ｇ （淡黄色オイル，９９．１%収率，ＬＣ ８６.７％）を得た。 The obtained residue (138.2 g) was purified by silica gel column chromatography (N60 silica gel 1.1 kg, CHCl 3 / Hep = 1/2 to 1/10), and crude Int. BBG-02: 125.7 g (Pale yellow oil, 99.1% yield, LC 86.7%) was obtained.
得られた粗体：１２５．７ｇを減圧蒸留精製に付し，Ｉｎｔ. ＢＢＧ−０２：９０．０５ｇ ｛微黄色オイル，７１．０％収率，ＬＣ ９８．５％，ｌｏｔ.１４０３３１１，ｂｐ.１４１．５〜１５４度（０．１３〜０．１５ｋＰａ）｝及び，Ｉｎｔ. ＢＢＧ−０２:２４．５１グラム ｛微黄色オイル，１９．３％収率，ＬＣ ９８．２％，ｌｏｔ.１４０３３１２，ｂｐ.１１５〜１４１．５℃（０．１５〜０．１７ｋＰａ）｝を得た。 The obtained crude product: 125.7 g was subjected to vacuum distillation purification, Int. BBG-02: 90.05 g {slight yellow oil, 71.0% yield, LC 98.5%, lot. 1403311, bp. 141.5-154 degrees (0.13-0.15 kPa)} and Int. BBG-02: 24.51 grams {light yellow oil, 19.3% yield, LC 98.2%, lot. 1403312, bp. 115 to 141.5 ° C. (0.15 to 0.17 kPa)}.
式Ａ２から式Ａ３（ＩｎｔＢＢＧ−０２からＩｎｔＢＢＧ−０３）の合成Synthesis of Formula A2 to Formula A3 (IntBBG-02 to IntBBG-03)
５００ｍＬナスフラスコにＩｎｔ ＢＢＧ−０２： ３０．０ｇ （ １３３．１ｍｍｏｌ，ＬＣ９８．５％，ｌｏｔ.１４０３３１１）を仕込み，氷冷下，濃硫酸：１３２ｍＬで希釈した（溶解熱大きい）。この溶液に対し，氷冷下，６０％発煙硫酸：２０．０ｍＬ（ ２９２．９ｍｍｏｌ）を１５分間かけて滴下した（反応熱は大きかった。）．滴下完了後，氷浴を外し，オイルバスにて，バス温：１００度で６時間撹拌した。 A 500 mL eggplant flask was charged with 30.0 g of Int BBG-02 (133.1 mmol, LC 98.5%, lot. 1403311), and diluted with concentrated sulfuric acid: 132 mL under ice cooling (high heat of solution). To this solution, 60% fuming sulfuric acid: 20.0 mL (292.9 mmol) was added dropwise over 15 minutes under ice cooling (the heat of reaction was great). After completion of the dropwise addition, the ice bath was removed, and the mixture was stirred in an oil bath at a bath temperature of 100 degrees for 6 hours.
ＨＰＬＣにて反応完結を確認後，反応液を氷冷（５℃）後，氷：９００ｇに注加した。得られた混合液に対し，氷冷下，４８％ＮａＯＨ ａｑ.を慎重に加え，ｐＨ５に調整した（内部温度：５５℃以下，ｐＨメータ使用。反応熱大）。得られた懸濁液をＡｃＯＥｔ：３００ｍＬで洗浄し，水層を減圧濃縮した（バス温度：４５〜５５℃）。濃縮時には，トルエン：１Ｌ×2回，メタノール：１Ｌ×１回の共沸を行い，水を除去した。 After confirming the completion of the reaction by HPLC, the reaction solution was ice-cooled (5 ° C.) and then poured into 900 g of ice. To the resulting mixture, 48% NaOH aq. Was carefully added under ice cooling to adjust the pH to 5 (internal temperature: 55 ° C. or less, using a pH meter, large reaction heat). The obtained suspension was washed with AcOEt: 300 mL, and the aqueous layer was concentrated under reduced pressure (bath temperature: 45 to 55 ° C.). At the time of concentration, azeotropic distillation of toluene: 1 L × 2 times and methanol: 1 L × 1 time was performed to remove water.
得られた濃縮残渣にメタノール：１Ｌを添加，不溶物をろ別し，ろ液を減圧濃縮，乾燥し，粗体のＩｎｔ. ＢＢＧ−０３:４３．２ｇ （白色アモルファスパウダー，１０６．２％収率，ＬＣ ７２．８％，異性体１７．６％，ｌｏｔ.１４０４０９）を得た。 Methanol: 1 L was added to the concentrated residue obtained, insolubles were filtered off, the filtrate was concentrated under reduced pressure and dried, and crude Int. BBG-03: 43.2 g (white amorphous powder, 106.2% yield). Ratio, LC 72.8%, isomer 17.6%, lot. 140409).
粗体はシリカゲルカラム（Ｎ６０シリカゲル，アセトン／水＝１００:１）を通過しており，また，精製と濃縮を繰り返すうちに徐々に紫色に着色し，わずかに分解が見られた（アセトン，ＩＰＡ，ＭｅＯＨ等で溶解，濃縮を実施）。この粗体（淡紫色アモルファスパウダー，ＬＣ ７０．６％，異性体 １７．８％，ｌｏｔ.１４０４０９）をそのまま次の工程に用いた。 The crude product passed through a silica gel column (N60 silica gel, acetone / water = 100: 1), and gradually became purple with repeated purification and concentration, and slight decomposition was observed (acetone, IPA). , Dissolved and concentrated with MeOH, etc.). This crude product (light purple amorphous powder, LC 70.6%, isomer 17.8%, lot. 140409) was directly used in the next step.
結晶化の検討
Ｉｎｔ. ＢＢＧ−０３は，精製効率が高くなかったため，精製効率を向上させることとした。ところで，Ｃａ,Ｂａ塩は無機塩だが水溶性が低いことが知られている。また，２価イオンとの塩は異性体間の物性差異が出やすいのではないかと考え，Ｃａを含む数種の塩基を添加し，水溶性が減少した結晶が得られないか検討した。様々な塩基を用いて結晶化を試みた結果，Ｉｎｔ. ＢＢＧ−０３をＣｓ塩化すると水溶性が減少した塩が得られることが分かった。また，Ｃｓ塩化の段階で異性体比率が向上することも分かった（異性体:１７．６％→１．１％）
Ｃｓ塩化の最適化：Ｈ２Ｏ（基質×３５ｗ／ｖ），Ｃｓ２ＣＯ３（４．８当量），収率３５％
なお，収率向上を目的にＨ２Ｏを減らした（基質×１５ｗ／ｖ）ところ，回収率は向上した（７７％）ものの，異性体が全く除去されなかった。
Study of crystallization Int. BBG-03 was not high in purification efficiency, so it was decided to improve the purification efficiency. By the way, it is known that Ca and Ba salts are inorganic salts but have low water solubility. In addition, we considered that salts with divalent ions are likely to have a difference in physical properties between isomers, and added several types of bases containing Ca to examine whether crystals with reduced water solubility could be obtained. As a result of crystallization using various bases, it was found that when Ins. BBG-03 was salified with Cs, a salt with reduced water solubility was obtained. It was also found that the isomer ratio improved at the stage of Cs chloride (isomer: 17.6% → 1.1%).
Optimization of Cs chloride: H 2 O (substrate x 35 w / v), Cs 2 CO 3 (4.8 equivalents), 35% yield
When H 2 O was reduced for the purpose of improving the yield (substrate × 15 w / v), the recovery rate was improved (77%), but the isomer was not removed at all.
Ｃｓ塩の晶析検討：
ＭｅＯＨ／ＩＰＡ＝１／１０（×３５ｖ／ｗ）・回収率：８１％，異性体：１．１→０．５％
Ｈ２Ｏ懸洗（×５ｖ／ｗ）・・・・・・・回収率：５０％，異性体:１７．６→３．３％
Ｈ２Ｏ懸洗（×２．５ｖ／ｗ）・・・・・・回収率：８１％，異性体：３．３→０．３％
Examination of crystallization of Cs salt:
MeOH / IPA = 1/10 (× 35 v / w) ・ Recovery rate: 81%, isomer: 1.1 → 0.5%
H 2 O hanging wash (× 5 v / w)... Recovery: 50%, isomer: 17.6 → 3.3%
H 2 O hanging wash (× 2.5 v / w)... Recovery: 81%, isomer: 3.3 → 0.3%
Ｉｎｔ. ＢＢＧ−０３をＣｓ塩化すると異性体が混在する事態を効果的に防ぐことができることがわかった。上記の例では，炭酸セシウムと水との混合物をＩｎｔ. ＢＢＧ−０３と作用させたが，セシウム塩を適宜調整したものをＩｎｔ. ＢＢＧ−０３と反応させ，Ｉｎｔ. ＢＢＧ−０３のセシウム化塩を得ればよい。 It was found that when Int. BBG-03 was Cs salified, the situation where isomers were mixed could be effectively prevented. In the above example, a mixture of cesium carbonate and water was allowed to act on Int. BBG-03, but an appropriately prepared cesium salt was reacted with Int. BBG-03 to give a cesium salt of Int. BBG-03. Just get.
Ｉｎｔ.ＢＢＧ−０３のＣｓ塩化及びＩｎｔ.ＢＢＧ−０３−Ｃｓの精製Cs chloride of Int.BBG-03 and purification of Int.BBG-03-Cs
５Ｌ三角フラスコに粗体のＩｎｔ ＢＢＧ−０３: １１８．９ｇ （ ３８９．３３ｍｍｏｌ，ＬＣ ６７．１％，異性体２０．２％，ｌｏｔ.１４０５１９及びＬＣ ７０．６％，異性体 １７．８％ｌｏｔ.１４０４０９），水：４．１Ｌ（基質重量×３５ｗ／ｖ），Ｃｓ２ＣＯ３:６０８．９ｇ（１．８６９ｍｏｌ）を仕込み，超音波撹拌，加温（４０℃）により均一な黒色溶液とした後，種晶（約５０ｍｇ）を添加し，２時間静置，放冷した。
結晶析出が見られないため，種晶（約５０ｍｇ）を更に添加し，氷冷，終夜成り行き静置した（１１時間）。
Crude Int BBG-03: 118.9 g (389.33 mmol, LC 67.1%, isomer 20.2%, lot. 140519 and LC 70.6%, isomer 17.8% lot in a 5 L Erlenmeyer flask .140409), water: 4.1 L (substrate weight × 35 w / v), Cs 2 CO 3 : 608.9 g (1.869 mol), charged with a uniform black solution by ultrasonic stirring and heating (40 ° C.). After that, seed crystals (about 50 mg) were added, and the mixture was allowed to stand for 2 hours and allowed to cool.
Since no crystal precipitation was observed, seed crystals (about 50 mg) were further added, and the mixture was ice-cooled and allowed to stand overnight (11 hours).
析出した固形物（綿毛状）を氷冷，内温：５〜７℃にて濾取，減圧乾燥して，粗体のＩｎｔ. ＢＢＧ−０３−Ｃｓ：９０．４ｇ （白色固体，５３．１%収率，ＬＣ ９２．５％，異性体６．４％，ｌｏｔ.１４０５１９−ｃｒｕｄｅ）を得た（＊固体が容易に溶解するため，固体濾取時にはほとんど洗い込み，洗浄をしない）。 The precipitated solid (fluffy) was ice-cooled, filtered at an internal temperature of 5 to 7 ° C. and dried under reduced pressure, and crude Int. BBG-03-Cs: 90.4 g (white solid, 53.1). % Yield, LC 92.5%, isomer 6.4%, lot. 140519-crude) (* Since the solid dissolves easily, it is almost washed and not washed at the time of solid filtration).
粗体のＩｎｔ. ＢＢＧ−０３−Ｃｓ：９０．４グラム（ＬＣ ９２.５％，異性体６．４％）に水：２２５ｍＬを添加し，７５〜８０度で３０分撹拌した（ほぼ完溶）後，室温（１８℃）まで冷却，種晶を添加し，３０分撹拌した。 Crude Int. BBG-03-Cs: 90.4 grams (LC 92.5%, isomer 6.4%) was added with 225 mL of water and stirred at 75-80 ° C. for 30 minutes (almost completely dissolved) ), Cooled to room temperature (18 ° C.), added seed crystals, and stirred for 30 minutes.
結晶析出が見られないため，氷浴で冷却すると固体が析出し，更に氷冷下1.5時間撹拌後，濾取，水洗：２７ｍＬ（×０．３ｖ／ｗ），減圧乾燥し，Ｉｎｔ. ＢＢＧ−０３−Ｃｓ：６８．１ｇ （白色固体，７５．６％回収率，ＬＣ ９５．８％，異性体１．７％，ｌｏｔ.１４０５１９−１）を得た。 Since no crystal precipitation was observed, a solid was precipitated when cooled in an ice bath, and further stirred under ice cooling for 1.5 hours, filtered, washed with water: 27 mL (× 0.3 v / w), dried under reduced pressure, Int. BBG- 03-Cs: 68.1 g (white solid, 75.6% recovery, LC 95.8%, isomer 1.7%, lot. 140519-1) was obtained.
得られたＩｎｔ. ＢＢＧ−０３−Ｃｓ:６８．１グラム（ＬＣ ９５．８％，異性体１．７％）を用いて上記と同様な水晶析を行い，Ｉｎｔ. ＢＢＧ−０３−Ｃｓ：５４．２ｇ（白色固体，79.7%回収率，ＬＣ ９５．６％，異性体０．４１％，ｌｏｔ.１４０５１９−２） を得た。 The obtained Int. BBG-03-Cs: 68.1 grams (LC 95.8%, isomer 1.7%) was crystallized in the same manner as described above, and Int. BBG-03-Cs: 54 .2 g (white solid, 79.7% recovery, LC 95.6%, isomer 0.41%, lot. 140519-2) was obtained.
式Ａ３から式Ａ４（ＩｎｔＢＢＧ−０３からＩｎｔＢＢＧ−０４）の合成Synthesis of Formula A3 to Formula A4 (IntBBG-03 to IntBBG-04)
５００ｍＬナスフラスコに粗体のＩｎｔ ＢＢＧ−０３： １０．０ｇ （ ３２．７４ｍｍｏｌ，ＬＣ ７０．６％，異性体 １７．８％ｌｏｔ.１４０４０９），４−クロロベンズアルデヒド（ｃｈｌｏｒｏｂｅｎｚａｌｄｅｈｙｄｅ）: ２．３０ｇ （１６．３７ｍｍｏｌ），ＥｔＯＨ:６０ ｍＬ，水:１８０ｍＬを添加し，濃塩酸を用いてｐＨを０．７に調整した。反応液をバス温：１２０℃で６９時間撹拌した。この工程においてエタノールなどのアルコールを溶媒に添加することが極めて望ましかった。 Crude Int BBG-03 in a 500 mL eggplant flask: 10.0 g (32.74 mmol, LC 70.6%, isomer 17.8% lot. 140409), 4-chlorobenzaldehyde: 2.30 g (16 37 mmol), EtOH: 60 mL, and water: 180 mL were added, and the pH was adjusted to 0.7 using concentrated hydrochloric acid. The reaction solution was stirred at a bath temperature of 120 ° C. for 69 hours. In this process, it was highly desirable to add an alcohol such as ethanol to the solvent.
ＨＰＬＣにて反応確認後（ＳＭ:ＴＭ＝１:１１），反応液を室温に戻し，１Ｍ ＮａＯＨ ａｑ.を用いてｐＨ１に調整した。ｐＨ調整後，反応液をバス温：６０℃に加熱し，６０℃にて析出物をろ取，水洗し，粗体のＩｎｔ. ＢＢＧ−０４:３．４８ｇ （白色固体，２８．９％収率，ＬＣ ８９．０％，異性体 ４．４％）を得た。 After confirming the reaction by HPLC (SM: TM = 1: 11), the reaction solution was returned to room temperature and adjusted to pH 1 using 1M NaOH aq. After adjusting the pH, the reaction solution was heated to a bath temperature of 60 ° C., and the precipitate was collected by filtration, washed with water, and crude Int. BBG-04: 3.48 g (white solid, 28.9% yield). Ratio, LC 89.0%, isomer 4.4%).
得られた粗体のＩｎｔ. ＢＢＧ−０４:３．４８ｇにＥｔＯＨ／Ｈ２Ｏ＝１／３混合液：３５ｍＬを添加，バス温度６０℃で１時間懸濁撹拌した。６０℃にて固体をろ取，水洗し，Ｉｎｔ. ＢＢＧ−０４:３．３４ｇ （白色固体，２７．８％収率，ＬＣ ８９．２％，異性体 ５．５％）を得た。 EtOH / H 2 O = 1/3 mixture: 35 mL was added to 3.48 g of the crude Int. BBG-04 obtained, and suspended and stirred at a bath temperature of 60 ° C. for 1 hour. The solid was collected by filtration and washed with water at 60 ° C. to obtain Int. BBG-04: 3.34 g (white solid, 27.8% yield, LC 89.2%, isomer 5.5%).
得られた粗体のＩｎｔ. ＢＢＧ−０４:３．３４ｇにＥｔＯＨ／Ｈ２Ｏ=１／３混合液：35ｍLを添加後，１Ｍ ＨＣｌ ａｑでｐＨ１に調整した。混合液をバス温:６０℃で１時間懸濁撹拌後，６０℃にて固体をろ取，水洗し，Ｉｎｔ. ＢＢＧ−０４:３．３１ｇ （白色固体，２７．５％収率，ＬＣ ９３．５％，異性体４．５％）を得た。 EtOH / H 2 O = 1/3 mixture: 35 mL was added to 3.34 g of the crude Int. BBG-04 obtained, and then adjusted to pH 1 with 1M HCl aq. The mixture was suspended and stirred at 60 ° C. for 1 hour, and the solid was collected by filtration at 60 ° C. and washed with water. Int. BBG-04: 3.31 g (white solid, 27.5% yield, LC 93 0.5%, isomer 4.5%).
得られた粗体のＩｎｔ. ＢＢＧ−０４:３．３１ｇにＥｔＯＨ：３５ｍＬを添加し，バス温度６０℃で１時間懸濁撹拌した。６０℃にて固体をろ取，ＥｔＯＨ洗し，Ｉｎｔ. ＢＢＧ−０４：３．２４ｇ （白色固体，２７．０%収率，ＬＣ ９３．３％，異性体４．５％，ｌｏｔ.１４０４２５）を得た。 EtOH: 35 mL was added to 3.31 g of the crude Int. BBG-04 obtained, and the mixture was suspended and stirred at a bath temperature of 60 ° C. for 1 hour. The solid was collected by filtration at 60 ° C., washed with EtOH, and Int. BBG-04: 3.24 g (white solid, 27.0% yield, LC 93.3%, isomer 4.5%, lot. 140425) Got.
この工程では，水で希釈した後に，冷却し，その後にろ過することで，収率が極めて上昇した。 In this process, the yield was extremely increased by diluting with water, cooling, and then filtering.
式Ａ４から式Ａ５（ＩｎｔＢＢＧ−０４からＩｎｔＢＢＧ−０５）の合成Synthesis of Formula A4 to Formula A5 (IntBBG-04 to IntBBG-05)
１００ｍＬナスフラスコにＩｎｔ ＢＢＧ−０４: ２．０グラム （ ２．７２７ｍｍｏｌ，ＬＣ ９３．３％，異性体４．５％，ｌｏｔ.１４０４２５），ＭｅＣＮ：２０ ｍＬ，ＨＣｌ／ＫＣｌ緩衝水溶液（ｐＨ１．８７）：１０ｍＬを添加し，ヘキサニトラトセリウム（ＩＩＩ）酸 アンモニウム（ＣＡＮ）： ３．８８グラム （７．０９ ｍｍｏｌ），のＨＣｌ／ＫＣｌ緩衝水溶液（ｐＨ１．８７）：１０ｍＬ溶液を室温で５分かけて添加し，室温で１時間撹拌した。 Int BBG-04: 2.0 g (2.727 mmol, LC 93.3%, isomer 4.5%, lot. 140425), MeCN: 20 mL, HCl / KCl buffered aqueous solution (pH 1.87) ): 10 mL added, ammonium hexanitratocerium (III) ammonium (CAN): 3.88 grams (7.09 mmol) in HCl / KCl buffered aqueous solution (pH 1.87): 10 mL solution at room temperature for 5 minutes And added at room temperature for 1 hour.
ＨＰＬＣにて反応確認後，反応液を飽和Ｎａ２ＳＯ４水溶液：２００ｍＬ，ｎ−ＢｕＯＨ:２００ｍＬに注加し，抽出した。有機層を分離後，水層をｎ−ＢｕＯＨ:１００ｍＬで抽出し，有機層を分離した。得られた有機層をＮａ２ＳＯ４乾燥，減圧濃縮（バス温度：４０〜４５℃）した。 After confirming the reaction by HPLC, the reaction solution was poured into a saturated Na 2 SO 4 aqueous solution: 200 mL, n-BuOH: 200 mL and extracted. After separating the organic layer, the aqueous layer was extracted with n-BuOH: 100 mL, and the organic layer was separated. The obtained organic layer was dried over Na 2 SO 4 and concentrated under reduced pressure (bath temperature: 40 to 45 ° C.).
得られた濃縮残渣：２．８２ｇをシリカゲルカラムクロマトグラフィー（Ｎ６０シリカゲル：６０ｇ，ＭｅＯＨ／ＣＨＣｌ３＝１／９→２／８→３／７→４／６，Ｎ６０シリカゲル：９ｇでまぶしチャージ）で精製し，Ｉｎｔ. ＢＢＧ−０５:１．１０グラム ｛濃緑色固体，５３．５%収率，ＬＣ ９７．２％（２５４ｎｍ），ＬＣ ９８．８％（６００ｎｍ），異性体：ピーク分離せず，ｌｏｔ.１４０５０７−１｝及び，Ｉｎｔ. ＢＢＧ−０５:０．５グラム ｛濃緑色固体，２４．３％収率，ＬＣ ８１．０％（２５４ｎｍ），ＬＣ ９１．９％（６００ｎｍ），異性体：ピーク分離せず，ｌｏｔ. １４０５０７−２｝を得た。 The resulting concentrated residue: 2.82 g was subjected to silica gel column chromatography (N60 silica gel: 60 g, MeOH / CHCl 3 = 1/9 → 2/8 → 3/7 → 4/6, N60 silica gel: charged with 9 g). Purified, Int. BBG-05: 1.10 grams {dark green solid, 53.5% yield, LC 97.2% (254 nm), LC 98.8% (600 nm), isomer: no peak separation , Lot. 140507-1} and Int. BBG-05: 0.5 gram {dark green solid, 24.3% yield, LC 81.0% (254 nm), LC 91.9% (600 nm), isomerism Body: no peak separation, and lot. 140507-2} was obtained.
式Ａ５から式Ａ６（ＩｎｔＢＢＧ−０５からＩｎｔＢＢＧ−０６（クルードＢＢＧ））の合成Synthesis of Formula A5 to Formula A6 (IntBBG-05 to IntBBG-06 (Crude BBG))
スクリュキャップ付き試験官にＩｎｔ ＢＢＧ−０５: １００ｍｇ（０．１３２７ｍｍｏｌ，ＬＣ ９８．８％，異性体:ピーク分離せず，ｌｏｔ.１４０５０７−１），ｐ−フェネチジン（ｐｈｅｎｅｔｉｄｉｎｅ）: １９．１ｍｇ（０．１３９４ｍｍｏｌ），ｎ−ブタノール（ｎ−ＢｕＯＨ）:１ｍＬを室温で添加し，バス温：１０５℃で１５時間撹拌した。ＴＬＣにて原料が残存していたため，反応液を室温に戻し，ｐ−フェネチジン（ｐｈｅｎｅｔｉｄｉｎｅ）： ３．６ｍｇ （ ０．０２６５４ｍｍｏｌ）を添加後，バス温：１０５℃で２時間撹拌した。ＴＬＣにて原料が残存していたため，更に反応液を室温に戻し，ｐ−フェネチジン（ｐｈｅｎｅｔｉｄｉｎｅ）: １８．２ｍｇ（０．１３２７ｍｍｏｌ）を添加後，バス温：１０５℃で２時間撹拌した。 Int BBG-05: 100 mg (0.1327 mmol, LC 98.8%, isomer: no peak separation, lot. 140507-1), p-phenetidine: 19.1 mg (0 1394 mmol), n-butanol (n-BuOH): 1 mL was added at room temperature, and the mixture was stirred at a bath temperature of 105 ° C. for 15 hours. Since the raw material remained by TLC, the reaction solution was returned to room temperature, p-phenetidine: 3.6 mg (0.02654 mmol) was added, and the mixture was stirred at a bath temperature of 105 ° C. for 2 hours. Since the raw material remained by TLC, the reaction solution was further returned to room temperature, p-phenetidine: 18.2 mg (0.1327 mmol) was added, and the mixture was stirred at a bath temperature of 105 ° C. for 2 hours.
ＴＬＣにて反応確認後，反応液に０．５Ｍ ＨＣｌ ａｑ.：１０ｍＬを添加し，減圧濃縮した（ＩＰＡで移し替え，バス温：４０〜４５℃）。ナスコルに０．５Ｍ ＨＣｌ ａｑ.:１０ｍＬを添加，超音波処理，スパーテルでの固体剥離を行い，固体をろ取，０．５Ｍ ＨＣｌ ａｑ.洗浄した。得られた固体を減圧乾燥し，ｃｒｕｄｅ ＢＢＧ:８１．１ｍｇ （濃赤紫固体，７２．０%収率，ＬＣ ８７．７％（６００ｎｍ），ｌｏｔ. １４０５１４）を得た。 After confirming the reaction by TLC, 0.5 M HCl aq .: 10 mL was added to the reaction solution and concentrated under reduced pressure (transferred by IPA, bath temperature: 40 to 45 ° C.). 0.5M HCl aq .: 10 mL was added to Nascol, sonication, and solid removal with a spatula were performed. The solid was collected by filtration and washed with 0.5M HCl aq. The obtained solid was dried under reduced pressure to obtain crude BBG: 81.1 mg (dark red purple solid, 72.0% yield, LC 87.7% (600 nm), lot. 140514).
式Ｂ１から式Ｂ２（ＩｎｔＢＢＧ−０１からＩｎｔＢＢＧ−０２５−１）の合成Synthesis of Formula B1 to Formula B2 (IntBBG-01 to IntBBG-025-1)
３００ｍＬナスフラスコにＩｎｔ ＢＢＧ−０１: １３．３６グラム （ ９８．５５ｍｍｏｌ, ＴＣＩ），Ｋ２ＣＯ３: ２０．４２ｇ（１４７．８ｍｍｏｌ, ｗａｋｏ），ＭｅＣＮ:９８ ｍＬを仕込み，室温でメタ−ブロモベンジルブロマイド（ｍ−ｂｒｏｍｏ ｂｅｎｚｙｌｂｒｏｍｉｄｅ）： ２４．６３ｇ （９８．５５ｍｍｏｌ, ｗａｋｏ）を添加した後，８０℃で１時間撹拌した。 Int BBG-01: 13.36 g (98.55 mmol, TCI), K 2 CO 3 : 20.42 g (147.8 mmol, wako), MeCN: 98 mL were charged in a 300 mL eggplant flask and meta-bromobenzyl at room temperature. After adding 24.63 g (98.55 mmol, wako) of bromide (m-bromo benzyl bromide), the mixture was stirred at 80 ° C. for 1 hour.
ＴＬＣにて反応確認後，不溶物をろ別し，ろ液を減圧濃縮した。濃縮残渣に水：２００ｍＬ，ＡｃＯＥｔ：２００ｍＬを添加，分液操作し，有機層を分離した。得られた有機層を塩水（ｂｒｉｎｅ）:１００ｍＬで洗浄，Ｎａ２ＳＯ４乾燥，減圧濃縮（バス温度：35〜45℃）した。 After confirming the reaction by TLC, insoluble matters were filtered off, and the filtrate was concentrated under reduced pressure. Water: 200 mL, AcOEt: 200 mL was added to the concentrated residue, liquid separation was performed, and the organic layer was separated. The obtained organic layer was washed with brine (100 mL), dried over Na 2 SO 4 , and concentrated under reduced pressure (bath temperature: 35 to 45 ° C.).
得られた濃縮残渣：３０．１９ｇをシリカゲルカラムクロマトグラフィー（Ｎ６０シリカゲル：９０ｇ，２０％ＡｃＯＥｔ／ヘプタン（ｈｅｐｔａｎｅ））で精製し，Ｉｎｔ ＢＢＧ−０２５−１：２９．４０ｇ （淡黄色オイル，９７．８％収率，ＬＣ９６．８％，ｌｏｔ.１４０５２３）を得た。 The obtained concentrated residue: 30.19 g was purified by silica gel column chromatography (N60 silica gel: 90 g, 20% AcOEt / heptane), and Int BBG-025-1: 29.40 g (pale yellow oil, 97.40 g). 8% yield, LC 96.8%, lot. 140523).
式Ｂ２から式Ｂ２−１（ＩｎｔＢＢＧ−０２５−１からＩｎｔＢＢＧ−０２５−２）の合成Synthesis of Formula B2-1 to Formula B2-1 (IntBBG-025-1 to IntBBG-025-2)
Ａｒ気流下，３００ｍＬコルベンにＩｎｔ ＢＢＧ−０２５−１: １０．４ｇ （ ３４．１８ｍｍｏｌ, ＬＣ９６．８％，ｌｏｔ. １４０５２３），ＤＩＰＥＡ: １１．８ｍＬ （６８．３６ｍｍｏｌ），脱水ジオキサン（ｄｉｏｘａｎｅ（脱水））：１００ ｍＬを仕込み，室温で１０分間Ａｒバブリングした。反応液にベンジル メルカプタン （ｂｅｎｚｙｌ ｍｅｒｃａｐｔａｎ）:４．２１ｍＬ （３５．８９ｍｍｏｌ），キサントホス（Ｘａｎｔｏｐｈｏｓ）：９８９ｍｇ（１．７０９ｍｍｏｌ），Ｐｄ２（ｄｂａ）３:７８２ｍｇ（０．８５４５ｍｍｏｌ）を順次加え，内温：９５度で１時間撹拌した。 Int BBG-025-1: 10.4 g (34.18 mmol, LC 96.8%, lot. 140523), DIPEA: 11.8 mL (68.36 mmol), dioxane (dehydrated) in 300 mL Kolben under Ar stream ): 100 mL was charged, and Ar was bubbled at room temperature for 10 minutes. Benzyl mercaptan: 4.21 mL (35.89 mmol), xanthophos: 989 mg (1.709 mmol), Pd 2 (dba) 3: 782 mg (0.8545 mmol) were sequentially added to the reaction solution, and the internal temperature was increased. : It stirred at 95 degree | times for 1 hour.
ＨＰＬＣにて反応確認後，反応液を室温に戻し，ＡｃＯＥｔ:２００ｍＬを添加，不溶物をある程度溶解させた。反応液をセライト／シリカゲル＝５０ｇ／５０ｇ混合パッドで濾過，ＡｃＯＥｔ洗浄し，ろ液を減圧濃縮した（バス温度：３５〜４５℃）。 After confirming the reaction by HPLC, the reaction solution was returned to room temperature, AcOEt: 200 mL was added, and insoluble matter was dissolved to some extent. The reaction solution was filtered through a Celite / silica gel = 50 g / 50 g mixed pad, washed with AcOEt, and the filtrate was concentrated under reduced pressure (bath temperature: 35 to 45 ° C.).
得られた濃縮残渣：１７．３８ｇをシリカゲルカラムクロマトグラフィー（Ｎ６０フラッシュシリカゲル：２００グラム，１％ＡｃＯＥｔ／ヘプタン（ｈｅｐｔａｎｅ））で精製し，Ｉｎｔ. ＢＢＧ−０２５−２:１２．６５ｇ（淡黄色オイル，１０６．５％収率，ＬＣ９６．８％，Ｌｏｔ．１４０５２７）を得た。 The obtained concentrated residue: 17.38 g was purified by silica gel column chromatography (N60 flash silica gel: 200 grams, 1% AcOEt / heptane), Int. BBG-025-2: 12.65 g (light yellow oil , 106.5% yield, LC 96.8%, Lot. 140527).
式Ｂ２−１から式Ｂ３（ＩｎｔＢＢＧ−０２５−２からＩｎｔＢＢＧ−０２５−３）の合成Synthesis of Formula B2-1 to Formula B3 (IntBBG-025-2 to IntBBG-025-3)
スクリュキャップ付き試験官にＩｎｔ ＢＢＧ−０２５−２： ４０８ｍｇ （ １．１７４ｍｍｏｌ, ＬＣ ９６．８％，ｌｏｔ. １４０５２７），ＡｃＯＨ:４ｍＬを仕込み１０℃に冷却した。反応液にＳＯ２Ｃｌ２:０．３８ｍＬ （４．６９６ｍｍｏｌ）のＡｃＯＨ:１．５ｍＬ溶液を１０℃，５分間かけて滴下し，同温度で３０分撹拌した。ＳＯ２Ｃｌ２をＡｃＯＨ溶液としてゆっくり加える事が重要であった。 A tester with a screw cap was charged with Int BBG-025-2: 408 mg (1.174 mmol, LC 96.8%, lot. 140527), AcOH: 4 mL, and cooled to 10 ° C. To the reaction solution, a solution of SO 2 Cl 2 : 0.38 mL (4.696 mmol) in AcOH: 1.5 mL was added dropwise at 10 ° C. over 5 minutes and stirred at the same temperature for 30 minutes. It was important to add SO 2 Cl 2 slowly as an AcOH solution.
ＨＰＬＣにて反応確認後，反応液を氷冷したｓａｔ. ＮａＨＣＯ３ ａｑ.:１００ｍＬに注加し，ＡｃＯＥｔ：１００ｍＬで抽出した。得られた有機層をｓａｔ. ＮａＨＣＯ３ ａｑ.:５０ｍＬで洗浄，Ｎａ２ＳＯ４乾燥，減圧濃縮（バス温度：３５〜４５℃）し，粗体のＩｎｔ. ＢＢＧ−０２５−３:３２３ｍｇ（淡黄色オイル，８５．０％収率，ＬＣ９１．０％，ｌｏｔ. １４０５２８）を得た。 After confirming the reaction by HPLC, the reaction solution was poured into ice-cooled sat. NaHCO 3 aq .: 100 mL and extracted with AcOEt: 100 mL. The obtained organic layer was washed with sat. NaHCO 3 aq .: 50 mL, dried over Na 2 SO 4 , concentrated under reduced pressure (bath temperature: 35-45 ° C.), and crude Int. BBG-025-3: 323 mg (light yellow oil , 85.0% yield, LC 91.0%, lot. 140528).
式Ｂ３から式Ｂ４（ＩｎｔＢＢＧ−０２５−３からＩｎｔＢＢＧ−０３−Ｎａ）の合成Synthesis of Formula B3 to Formula B4 (IntBBG-025-3 to IntBBG-03-Na)
１０ｍＬナスフラスコにＩｎｔ ＢＢＧ−０２５−３: ３０１ｍｇ （ ０．９３８７ｍｍｏｌ, ＬＣ ９１．０％，ｌｏｔ. １４０５２８），ＴＨＦ:３ｍＬ，２Ｍ ＮａＯＨ ａｑ.:0.94ｍＬ（１．８７８ｍｍｏｌ）を仕込み，５０℃で３０分撹拌した。 Int BBG-025-3: 301 mg (0.9387 mmol, LC 91.0%, lot. 140528), THF: 3 mL, 2M NaOH aq .: 0.94 mL (1.878 mmol) were charged into a 10 mL eggplant flask at 50 ° C. Stir for 30 minutes.
ＨＰＬＣにて反応確認後，反応液を減圧濃縮（バス温：４５〜５０℃）した。濃縮残渣をトルエン：１０ｍＬ×２回，メタノール：１０ｍＬ×１回共沸した後，メタノール１０ｍＬを添加，不溶物をろ別した。得られたろ液を濃縮乾固前に，ＭｅＯＨ／ＩＰＡ晶析（ＭｅＯＨで溶かし，一部濃縮，ＩＰＡ添加，一部濃縮を繰り返しＩＰＡに置換後，超音波を当て，固体を粉砕，０℃で３０分撹拌，ろ取）し，Ｉｎｔ. ＢＢＧ−０３−Ｎａ：153.7ｍｇ（白色固体，５０．０%収率，ＬＣ９０.３％，ｌｏｔ. １４０５２９−１）及び，母液濃縮物：２０４ｍｇ（白色アモルファス半固体，６６．４％収率，ＬＣ５９．６％，ｌｏｔ. １４０５２９−２）を得た。 After confirming the reaction by HPLC, the reaction solution was concentrated under reduced pressure (bath temperature: 45 to 50 ° C.). The concentrated residue was azeotroped with toluene: 10 mL × 2 times, methanol: 10 mL × 1 time, 10 mL of methanol was added, and insoluble matters were filtered off. Before the obtained filtrate was concentrated to dryness, MeOH / IPA crystallization (dissolved with MeOH, partially concentrated, IPA added, partially concentrated repeatedly after replacement with IPA, sonicated, solid crushed at 0 ° C The mixture was stirred for 30 minutes and collected by filtration. Int. BBG-03-Na: 153.7 mg (white solid, 50.0% yield, LC 90.3%, lot. 140529-1) and mother liquor concentrate: 204 mg (white Amorphous semi-solid, 66.4% yield, LC 59.6%, lot. 140529-2) was obtained.
また，上記とは別に，Ｉｎｔ ＢＢＧ−０２５−３:８７９ｍｇ（２．３１ｍｍｏｌ，純分９１．６％ ｂｙ ＬＣ−ＭＳ，ｌｏｔ.１４０５２５）を用いて，同様に反応を行った。
ＨＰＬＣにて反応確認後，反応液を減圧濃縮（バス温：４５〜５０）した。濃縮残渣をメタノール：２０ｍＬ×３回共沸した後，メタノール１０ｍＬを添加，不溶物をろ別した。
得られたろ液を減圧濃縮，乾燥し，粗体のＩｎｔ. ＢＢＧ−０３−Ｎａ:７７６ｍｇ（白色固体，ｑｕａｎｔ, ＬＣ８８．０％，ｌｏｔ. １４０５２６）を得た。
Separately from the above, Int BBG-025-3: 879 mg (2.31 mmol, pure content 91.6% by LC-MS, lot. 140525) was used for the same reaction.
After confirming the reaction by HPLC, the reaction solution was concentrated under reduced pressure (bath temperature: 45-50). The concentrated residue was azeotroped with methanol (20 mL × 3 times), 10 mL of methanol was added, and the insoluble material was filtered off.
The obtained filtrate was concentrated under reduced pressure and dried to obtain crude Int. BBG-03-Na: 776 mg (white solid, quant, LC 88.0%, lot. 140526).
式Ｂ２から式Ｂ３（ＩｎｔＢＢＧ−０２５−１からＩｎｔＢＢＧ−０２５−３）の合成Synthesis of Formula B2 to Formula B3 (IntBBG-025-1 to IntBBG-025-3)
Ａｒ気流下，１００ｍＬコルベンにｉ−ＰｒＭｇＣｌ（１．０Ｍ ｉｎ Ｅｔ２Ｏ）:１．６ｍＬ （１．６ｍｍｏｌ），ＴＨＦ（脱水）：２０ｍＬを仕込み，−７０℃に冷却した。反応液にｎ−ＢｕＬｉ （１．５５Ｍ ｉｎ ｎ−ヘキセン（ｈｅｘａｎｅ）:２．０６ｍＬ（３．２ｍｍｏｌ）を−７０℃で添加し，１０分間撹拌した。反応液に，Ｉｎｔ ＢＢＧ−０２５−２: １．２１６ｇ（４．０ｍｍｏｌ, Ｃ，ｌｏｔ. １７４０５２２）のＴＨＦ（脱水）：５ｍＬ溶液を−７０℃で滴下し，−６０℃で１時間撹拌した。原料が残存したため，反応液にｉ−ＰｒＭｇＣｌ（１．０Ｍ ｉｎ Ｅｔ２Ｏ）:０．３２ｍＬ （０．３２ｍｍｏｌ），ｎ−ＢｕＬｉ（１．５５Ｍ ｉｎ ｎ−ヘキセン（ｈｅｘａｎｅ）:０．４１ｍＬ（０．６４ｍｍｏｌ）を−６０℃で順次滴下し，−６０℃で１０分間撹拌した。 Under Ar flow, 100 mL Kolben was charged with i-PrMgCl (1.0 M in Et 2 O): 1.6 mL (1.6 mmol), THF (dehydrated): 20 mL, and cooled to −70 ° C. N-BuLi (1.55 M in n-hexane: 2.06 mL (3.2 mmol) was added to the reaction solution at −70 ° C., and the mixture was stirred for 10 minutes. To the reaction solution, Int BBG-025-2: 1.216 g (4.0 mmol, C, lot. 1740522) in THF (dehydrated): 5 mL solution was added dropwise at −70 ° C. and stirred for 1 hour at −60 ° C. Since the raw material remained, i-PrMgCl was added to the reaction solution. (1.0 M in Et 2 O): 0.32 mL (0.32 mmol) and n-BuLi (1.55 M in n-hexene): 0.41 mL (0.64 mmol) were sequentially added dropwise at −60 ° C. , And stirred at −60 ° C. for 10 minutes.
反応液に，ＳＯ２（７．７Ｍ ｉｎ ＴＨＦ）溶液：５．２ｍＬ（４０．０ｍｍｏｌ）を−６５℃にて滴下（内温：−６５→−５５℃）し，−６０℃で１．５時間撹拌した。 To the reaction solution, SO 2 (7.7M in THF) solution: 5.2 mL (40.0 mmol) dropwise at a -65 ° C. (internal temperature: -65 → -55 ℃), and 1.5 at -60 ° C. Stir for hours.
反応液にＮＣＳ:６５０ｍｇ（５．７６ｍｍｏｌ）を−６０℃にて添加し，−２０℃で３０分間撹拌後，自然昇温に任せ，−２０℃〜室温で１５時間撹拌した。ＬＣ−ＭＳにて反応を確認後，水：１００ｍＬ及び，ＡｃＯＥｔ：１００ｍＬを添加し，抽出した。
得られた有機層を水：５０ｍＬ，塩水（ｂｒｉｎｅ）:５０ｍＬで洗浄，Ｎａ２ＳＯ４乾燥，減圧濃縮（バス温：３５〜４５℃）した。
NCS: 650 mg (5.76 mmol) was added to the reaction solution at −60 ° C., and the mixture was stirred at −20 ° C. for 30 minutes, then allowed to warm naturally, and stirred at −20 ° C. to room temperature for 15 hours. After confirming the reaction by LC-MS, water: 100 mL and AcOEt: 100 mL were added and extracted.
The obtained organic layer was washed with water: 50 mL and brine: 50 mL, dried over Na 2 SO 4 , and concentrated under reduced pressure (bath temperature: 35 to 45 ° C.).
得られた濃縮残渣：１．５０ｇをシリカゲルカラムクロマトグラフィー（Ｎ６０フラッシュシリカゲル：６０グラム，ＡｃＯＥｔ／ヘプタン（ｈｅｐｔａｎｅ）＝１／２０）で精製し，Ｉｎｔ. ＢＢＧ−０２５−３:８７９ｍｇ（淡黄色オイル，６７．９％収率，純分９１．６ ％ ｂｙ ＬＣ−ＭＳ，ｌｏｔ. １４０５２５）を得た。 The obtained concentrated residue: 1.50 g was purified by silica gel column chromatography (N60 flash silica gel: 60 grams, AcOEt / heptane = 1/20), Int. BBG-025-3: 879 mg (light yellow oil 67.9% yield, pure content 91.6% by LC-MS, lot. 140525).
本発明は，化学及び医薬産業において利用されうる。 The present invention can be utilized in the chemical and pharmaceutical industries.
Claims (4)
式Ａ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）をベンジル化試薬と反応させる工程を含む，式Ａ２で示される化合物を得るベンジル化工程と，
式Ａ２で示される化合物に三酸化硫黄又は硫酸を作用させる工程を含む，式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ａ３で示されるベンジルエチル−ｍ−トリルアミン誘導体と，式Ａ３−１で示される化合物を作用させる工程を含む，式Ａ４で示される化合物を得る工程と，
式Ａ４で示される化合物を酸化剤と作用させた後に，パラ−フェネチジンと作用させる工程を含む，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と，
を含む，
ブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩の製造方法。
（上記式中Ｘ１１は，水素原子を示し，Ｘ１２は，水素原子，ナトリウム原子又はセシウム原子を示す。）
A benzylation step of obtaining a compound of formula A2, comprising the step of reacting ethyl-m-tolylamine of formula A1 with a benzylating reagent;
Obtaining a benzylethyl-m-tolylamine derivative of formula A3, comprising the step of allowing sulfur trioxide or sulfuric acid to act on the compound of formula A2;
Obtaining a compound of formula A4, which comprises reacting a benzylethyl-m-tolylamine derivative of formula A3 with a compound of formula A3-1;
A brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof is obtained, which comprises a step of reacting a compound represented by the formula A4 with an oxidizing agent and then reacting with para-phenetidine. Process,
including,
A method for producing Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof.
(In the above formula, X 11 represents a hydrogen atom, and X 12 represents a hydrogen atom, a sodium atom or a cesium atom.)
Ｘ１２は，水素原子又はナトリウム原子であり，
Ｘ１３は，塩素原子である，方法。 A method for producing Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof according to claim 1,
X 12 is a hydrogen atom or a sodium atom,
The method wherein X 13 is a chlorine atom.
式Ｂ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）を，ハロゲン原子が付加したベンジル化試薬と反応させる工程を含む，式Ｂ２で示されるハロゲン化化合物を得る工程と，
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換する工程を含む，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体とアルカリを反応させる工程を含む，式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体と，式Ａ３−１で示される化合物を作用させる工程を含む，式Ａ４で示される化合物を得る工程と，
式Ａ４で示される化合物を酸化剤と作用させた後に，パラ−フェネチジンと作用させる工程を含む，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と，
を含む，
ブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩の製造方法であって，
（上記式中Ｘ２１は，ハロゲン原子を示し，Ｘ２２は，ハロゲン原子を示し，Ｘ２３は，ハロゲン原子を示す。）
前記式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程は，
前記式Ｂ２で示されるハロゲン化化合物に硫化物を作用させ，式Ｂ２−１で示される化合物を得る工程と，
前記式Ｂ２−１で示される化合物に求電子試薬ＳＯ２Ｃｌ２を作用させ，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体であってＸ２２が塩素原子であるものを得る工程を含む，
方法。
（上記式においてＲ２１は，フェニル基又はベンジル基であるか，メチル基，エチル基，水酸基，ハロゲン原子で置換されてもよいフェニル基又はベンジル基を示す。）
Obtaining a halogenated compound of formula B2, comprising reacting ethyl-m-tolylamine of formula B1 with a benzylating reagent to which a halogen atom has been added;
Obtaining a benzylethyl-m-tolylamine derivative of formula B3, comprising the step of substituting a halogen atom of the halogenated compound of formula B2;
Obtaining a benzylethyl-m-tolylamine derivative of formula B4, comprising reacting a benzylethyl-m-tolylamine derivative of formula B3 with an alkali;
Obtaining a compound of formula A4, which comprises reacting a benzylethyl-m-tolylamine derivative of formula B4 with a compound of formula A3-1;
A brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof is obtained, which comprises a step of reacting a compound represented by the formula A4 with an oxidizing agent and then reacting with para-phenetidine. Process,
including,
A method for producing Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof,
(In the above formula, X 21 represents a halogen atom, X 22 represents a halogen atom, and X 23 represents a halogen atom.)
The step of substituting the halogen atom of the halogenated compound represented by the formula B2 to obtain the benzylethyl-m-tolylamine derivative represented by the formula B3 includes:
A step of allowing a sulfide to act on the halogenated compound represented by the formula B2 to obtain a compound represented by the formula B2-1;
Including the step of reacting the compound represented by the formula B2-1 with an electrophile SO 2 Cl 2 to obtain a benzylethyl-m-tolylamine derivative represented by the formula B3, wherein X 22 is a chlorine atom.
Method.
(In the above formula, R 21 represents a phenyl group or a benzyl group, or a phenyl group or a benzyl group which may be substituted with a methyl group, an ethyl group, a hydroxyl group or a halogen atom.)
式Ｂ１で示されるエチル−ｍ−トリルアミン（ｅｔｈｙｌ−ｍ−ｔｏｌｙｌ−ａｍｉｎｅ）を，ハロゲン原子が付加したベンジル化試薬と反応させる工程を含む，式Ｂ２で示されるハロゲン化化合物を得る工程と，
式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換する工程を含む，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体とアルカリを反応させる工程を含む，式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程と，
式Ｂ４で示されるベンジルエチル−ｍ−トリルアミン誘導体と，式Ａ３−１で示される化合物を作用させる工程を含む，式Ａ４で示される化合物を得る工程と，
式Ａ４で示される化合物を酸化剤と作用させた後に，パラ−フェネチジンと作用させる工程を含む，式（１）で示されるブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩を得る工程と，
を含む，
ブリリアントブル−Ｇ（ＢＢＧ）又はその薬学的に許容される塩の製造方法であって，
（上記式中Ｘ２１は，ハロゲン原子を示し，Ｘ２２は，ハロゲン原子を示し，Ｘ２３は，ハロゲン原子を示す。）
前記式Ｂ２で示されるハロゲン化化合物のハロゲン原子を置換して，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程は，
前記式Ｂ２で示されるハロゲン化化合物とグリニャ−ル試薬を作用させ，ＳＯ２を作用させた後に，ハロゲンイオンと作用させることで，式Ｂ３で示されるベンジルエチル−ｍ−トリルアミン誘導体を得る工程を含む，
方法。
A method for producing Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof,
Obtaining a halogenated compound of formula B2, comprising reacting ethyl-m-tolylamine of formula B1 with a benzylating reagent to which a halogen atom has been added;
Obtaining a benzylethyl-m-tolylamine derivative of formula B3, comprising the step of substituting a halogen atom of the halogenated compound of formula B2;
Obtaining a benzylethyl-m-tolylamine derivative of formula B4, comprising reacting a benzylethyl-m-tolylamine derivative of formula B3 with an alkali;
Obtaining a compound of formula A4, which comprises reacting a benzylethyl-m-tolylamine derivative of formula B4 with a compound of formula A3-1;
A brilliant blue-G (BBG) represented by the formula (1) or a pharmaceutically acceptable salt thereof is obtained, which comprises a step of reacting a compound represented by the formula A4 with an oxidizing agent and then reacting with para-phenetidine. Process,
including,
A method for producing Brilliant Blue-G (BBG) or a pharmaceutically acceptable salt thereof,
(In the above formula, X 21 represents a halogen atom, X 22 represents a halogen atom, and X 23 represents a halogen atom.)
The step of substituting the halogen atom of the halogenated compound represented by the formula B2 to obtain the benzylethyl-m-tolylamine derivative represented by the formula B3 includes:
A step of obtaining a benzylethyl-m-tolylamine derivative represented by the formula B3 by reacting the halogenated compound represented by the formula B2 with a Grignard reagent, reacting SO 2 and then reacting with a halogen ion. Including,
Method.
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