JP6404358B2 - マルトール第二鉄の結晶形態 - Google Patents
マルトール第二鉄の結晶形態 Download PDFInfo
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- JP6404358B2 JP6404358B2 JP2016551318A JP2016551318A JP6404358B2 JP 6404358 B2 JP6404358 B2 JP 6404358B2 JP 2016551318 A JP2016551318 A JP 2016551318A JP 2016551318 A JP2016551318 A JP 2016551318A JP 6404358 B2 JP6404358 B2 JP 6404358B2
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- maltol
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- 229950008006 ferric maltol Drugs 0.000 title claims description 50
- AHPWLYJHTFAWKI-UHFFFAOYSA-K iron(3+);2-methyl-4-oxopyran-3-olate Chemical compound [Fe+3].CC=1OC=CC(=O)C=1[O-].CC=1OC=CC(=O)C=1[O-].CC=1OC=CC(=O)C=1[O-] AHPWLYJHTFAWKI-UHFFFAOYSA-K 0.000 title claims description 49
- XPCTZQVDEJYUGT-UHFFFAOYSA-N allomaltol Natural products CC=1OC=CC(=O)C=1O XPCTZQVDEJYUGT-UHFFFAOYSA-N 0.000 claims description 63
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
- C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/351—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom not condensed with another ring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/02—Nutrients, e.g. vitamins, minerals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/12—Drugs for disorders of the metabolism for electrolyte homeostasis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/06—Antianaemics
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/02—Iron compounds
- C07F15/025—Iron compounds without a metal-carbon linkage
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/13—Crystalline forms, e.g. polymorphs
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Description
I型多形体は、好ましくは、およそ(すなわち約、又は近似的に)15.6及び22.5±0.25又は0.2度の2θ値(度)を有する特徴的な結晶ピークを含む。回折パターンは、典型的には、約6.9、7.4、8.3、9.3、10.5、又は約11.8度、例えば8.3又は11.8±0.25又は±0.2又は±0.1、例えば約±0.05度の1つ若しくは複数、又は全て、又はそれぞれにおけるピークを含まない。
II型多形体は、好ましくは、およそ(すなわち約、又は近似的に)8.3±0.25又は±0.2又は±0.1、例えば約±0.05度の2θ値(度)を有する特徴的な結晶ピークを含む。回折パターンは、典型的には、約6.9、7.4、9.3、9.5、10.5、11.4又は約13.7度、例えば11.4又は13.8±0.25又は±0.2又は±0.1、例えば約±0.05度の1つ若しくは複数、又は全て、又はそれぞれにおけるピークを含まない。
III型多形体は、好ましくは、およそ(すなわち約、又は近似的に)7.4±0.3、±0.25又は0.2又は±0.1、例えば約±0.05度の2θ値(度)を有する特徴的な結晶ピークを含む。回折パターンは、典型的には、約6.9、8.3、9.5、11.3、12.0、12.5、12.9、14.5又は約15.8度、例えば6.9、9.5、11.3±0.25又は±0.2又は±0.1、例えば約±0.05度の1つ若しくは複数、又は2つ以上、又は3つ以上、又はそれぞれにおけるピークを含まない。
IV型多形体は、好ましくは、およそ(すなわち約、又は近似的に)9.5及び14.5±0.2又は±0.1、例えば約±0.05度の2θ値(度)を有する特徴的な結晶ピークを含む。回折パターンは、典型的には、約6.9、8.3、10.5、11.7、12.0、12.2、12.5、13.0、13.4及び約15.8度、例えば6.9、8.3、11.7±0.25又は±0.2又は±0.1、例えば約±0.05度の1つ若しくは複数、又は2つ以上、又は3つ以上、又はそれぞれにおけるピークを含まない。
(a)クエン酸第二鉄を含む水溶液、例えば水等の水溶液中のクエン酸第二鉄の溶液を形成する工程と、
(b)マルトールを、水等の水溶液中の塩基と合わせて、マルトールアニオンを含む溶液を形成する工程と、
(c)クエン酸第二鉄の水溶液を、マルトールアニオンを含む水溶液と合わせる工程であって、マルトール第二鉄(多形体I型及び/又はII型)の種結晶を添加する、工程と、
(d)マルトール第二鉄の多形体を単離する工程と
を含んでもよい。
XRPDデータの取得方法の詳細
XRPDデータを得るために使用した機器条件は、以下の通りである。
機器:PANalytical X'Pert PRO
範囲:従来の反射モードで3°2θから35°2θ
走査速度:0.202004°s-1
検出器:PIXcel検出器
スリット:1/2°
源:銅Kα線
電圧:45kV
強度:40mA
粉末X線回折(XRPD)分析は、標準的方法、例えばGiacovazzo, C.ら(1995)、Fundamentals of Crystallography、Oxford University Press;Jenkins, R.及びSnyder, R. L.(1996)、Introduction to X-Ray Powder Diffractometry、John Wiley & Sons、New York;Bunn, C. W.(1948)、Chemical Crystallography、Clarendon Press、London;又はKlug, H. P. & Alexander, L. E.(1974)、X-ray Diffraction Procedures、John Wiley and Sons、New Yorkに記載の方法に従って調製された試料に対して行うことができる。X線回折分析は、Thermo ARL X'TRA(X線の波長1.5418Å、Cu源、電圧45kV、フィラメント放出44mA)を使用して、152分間で2°から40°まで行った。ピーク位置(°2θ)の計算を行った。それらは、±0.2°2θの範囲内で変動し得る。
I型
9.04kgのクエン酸第二鉄を、29リットルの精製水と合わせた。別個に、12.2kgのマルトールを、15.2リットルの水酸化ナトリウム溶液(20%w/w)と合わせた。クエン酸第二鉄及び水酸化ナトリウムを槽に投入して4リットルの水を添加し、次いで20℃から25℃で撹拌した。次いで、種を添加した。種は、12リットルの水中の65gのマルトール第二鉄多形体であった。種結晶は、実施例1に記載のものと同じ方法により調製したが、種結晶は使用しなかった。一貫した結晶化/沈殿を補助するために、槽に種を添加した。混合物を懸濁液として槽内に保持して結晶を成長させ、次いで濾過及び洗浄を3回行い、各回に13リットルの水を使用した。得られた固体を80℃未満で乾燥させると、13.25kgの乾燥マルトール第二鉄が生成された。
II型の播種あり又はなしでの、再結晶化によるマルトール第二鉄の生成
クエン酸第二鉄(15g、6.12×10-2モル)を、溶解を補助するために撹拌しながら水(60ml)中に溶解し、還流下で加熱した。次いで、溶液を室温まで冷却した。別個の反応槽内で、マルトール(19.17g、0.152モル)を6M水酸化ナトリウム(27ml)中に入れ、固体が完全に溶解するまで室温で撹拌した。次いで、溶液を研磨濾過した。
II型
実施例1に記載のような一般的方法を使用して、実施例2のマルトール第二鉄を生成したが、マルトール第二鉄は24kgから33kgのより大規模なバッチで生成した。
III型
以前の実験は、1,4-ジオキサンを含むスラリーが新たな多形体型を生成することを示したが、これはIII型として特性決定された。試料に対する更なる分析を行うために、この新たな型の生成をより大規模に完了させた。
I型及びII型多形体の混合物(100mg)を、40℃の15体積の5%水/1,4-ジオキサン中に入れ、1時間撹拌した。混合物を研磨濾過してから、室温まで冷却し、吸引濾過した。得られた固体を真空炉(45℃)内で一晩乾燥させた。
IV型
IV型の分析
I型及びII型多形体の混合物の混合溶媒冷却結晶化において2-クロロブタン及びTBMEから得られた固体は、I型又はII型多形体と直接比較可能ではなかった。したがって、新たな型又は型の混合物が単離されたと結論付けられた。
異なる多形体の試料の純水に対する溶解度を、23℃で評価した。結果を、以下の表に記載する。
競合的なスラリー
10mgのI型及びII型と共にIV型(10mg)を水(1ml)中に入れ、室温で一晩撹拌した。更なる多形体も含めるために第2のスラリーを設定した。混合物を吸引濾過し、真空炉(45℃)内で乾燥させた。
III型は、典型的には、99.8%の化学的純度で溶媒和形態として存在する。
Claims (9)
前記I型多形体が、11.4、15.6、16.9、22.5、及び23.8度のそれぞれにおける、並びに任意選択で、13.7、19.6、20.7、22.5、25.2及び25.8±0.25度の1つ若しくは複数、2つ以上、3つ以上又はそれぞれにおける2θ値(度)を有する特性結晶ピークを含む、粉末X線回折パターンを特徴とし、
前記II型多形体が、8.3、11.8、13.4、14.5、及び15.6度のそれぞれにおける、並びに任意選択で、15.5、16.7、21.1、22.8、及び24.6度±0.25度の1つ若しくは複数、2つ以上、3つ以上又はそれぞれにおける、2θ(度)で表されるピークを含む粉末X線回折パターンを特徴とする、
組成物。
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