JP5405311B2 - mGluR5受容体アンタゴニストの多形 - Google Patents
mGluR5受容体アンタゴニストの多形 Download PDFInfo
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- JP5405311B2 JP5405311B2 JP2009541986A JP2009541986A JP5405311B2 JP 5405311 B2 JP5405311 B2 JP 5405311B2 JP 2009541986 A JP2009541986 A JP 2009541986A JP 2009541986 A JP2009541986 A JP 2009541986A JP 5405311 B2 JP5405311 B2 JP 5405311B2
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Images
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
- A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
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- A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
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- General Health & Medical Sciences (AREA)
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- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Biomedical Technology (AREA)
- Neurosurgery (AREA)
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- Urology & Nephrology (AREA)
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- Psychiatry (AREA)
- Epidemiology (AREA)
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- Hematology (AREA)
- Diabetes (AREA)
- Hospice & Palliative Care (AREA)
- Child & Adolescent Psychology (AREA)
- Gastroenterology & Hepatology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Description
2d sinθ=nλ
[式中、d=結晶内の隣り合う一対の面の間の垂直距離(格子面間隔)、θ=Bragg角、λ=波長、及びn=整数]を用いて結晶材料の回折を表す。
− 2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンのモノ又はヘミ硫酸塩;
− 2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態A又はB;
− 2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンのヘミ硫酸塩の形態A;
− 2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの非晶質形態、
の1種以上及び薬学的に許容され得る担体を含む医薬組成物も提供する。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態Aの調製
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態Aは、適切な溶媒系、例えば2−プロパノール/水中で、一硫酸塩の形態Aの種結晶を導入して又は導入せずに、塩形成することによるか、あるいは、非限定的にアセトニトリル、アセトニトリル/水、メタノール、エタノール、2−プロパノール、酢酸、1−オクタノール、2−プロパノール/49%硫酸(10:1、v/v)を含む溶媒中の一硫酸塩の形態Aの再結晶化により形成することができる。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジン61.0gを2−プロパノール610mLに溶解した。溶液を濾過し、フィルターを2−プロパノール31mLですすいだ。合わせた溶液に、水30mLと硫酸(97%)18.91gの混合物を滴下した。溶液を0〜5℃に冷却した。種結晶の導入を必要に応じて58℃で実施した。固体残留物を濾過し、2−プロパノール(0〜5℃)で洗浄し、50℃/<1mbarで18時間乾燥させた。収量(収率):69.1g(87.1%)。
一硫酸塩の形態Aの代表的ロットのXRPD−パターン、IR−スペクトル及びTGA−曲線を、図1〜3に示す。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態Bの調製
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態Bは、溶媒系、例えば2−プロパノール/水もしくは1N 硫酸中で、一硫酸塩の形態Aの溶媒平衡によるか、又は溶媒系、例えば2−プロパノール/水中の2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩を種結晶を導入して冷却結晶化することにより、生成することができる。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態A 300mgを、2−プロパノール3ml及び水1mlに60℃で溶解して、清澄な溶液を得た。清澄な溶液に一硫酸塩の形態Bの種結晶を導入して、室温で密閉した。単結晶が3日後に形成した。
一硫酸塩の形態Bの代表的ロットのXRPD−パターン、IR−スペクトル及びTGA−曲線を、図4〜6に示す。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンのヘミ硫酸塩の形態Aの調製
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンのヘミ硫酸塩の形態Aは、溶媒、例えば水中の一硫酸塩の形態Aの溶媒平衡により生成することができる。それはまた、非限定的に、水、水/メタノール(例えば4:1、v/v)、水/エタノール(例えば4:1、v/v)、水/2−プロパノール(例えば3:1、v/v)を含む溶媒系中の一硫酸塩の形態Aの再結晶化又は温浸により調製することもできる。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の形態A 41gを、水128gと混合した。スラリーを室温で2〜16時間撹拌した。一硫酸塩の形態Aのすべてをヘミ硫酸塩に変換した後、結晶を濾過により回収し、水ですすいだ。湿潤ケーキを真空オーブンで40℃にて48時間乾燥させた。収率は約93%であった。
ヘミ硫酸塩の形態Aの代表的ロットのXRPD−パターン、IR−スペクトル及びTGA−曲線を、図7〜9に示す。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の非晶質形態の調製
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの非晶質一硫酸塩は、適切な溶媒、好ましくはメタノール中の溶液を急速に蒸発させると入手可能である。
2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジン0.53gを、メタノール10mLに約65℃で溶解した。減圧下で溶媒を完全に蒸発させた後、固体(泡状物)をさらに約50℃/5〜20mbarで18時間乾燥させた。分析により、非晶質2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンであると明らかにした。
非晶質形態のXRPD−パターン及びIR−スペクトルを、図10〜11に示す。
1.品目1、2、3、4、5及び6を適切なミキサーで30分間混合する。
2.品目7及び8を加え、3分間混合する。
3.適切なカプセルに充填する。
Claims (10)
- CuKα照射で得られる、2θ(°)=9.8、13.4、14.2、18.1、18.9、19.6、22.6、22.9、25.7、27.1及び29.9(±0.2°2θ)におけるX線回折ピークにより特徴づけられる、2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の結晶。
- 3068、2730、2618、2236、2213、1628、1587、1569、1518、1384、1374、1295、1236、1168、1157、1116、1064、1019、902、855、786及び674cm−1(±3cm−1)に鋭いバンドを有する赤外線スペクトルにより特徴づけられる、請求項1記載の2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の結晶。
- CuKα照射で得られる、2θ(°)=8.9、10.2、14.3、14.7、15.4、17.1、18.8、19.5、20.9、22.5及び23.8(±0.2°2θ)におけるX線回折ピークにより特徴づけられる、2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の結晶。
- 3122、3039、3003、2923、2853、2719、2608、2231、1622、1585、1565、1515、1439、1373、1346、1224、1158、1116、1082、1047、1015、987、901、787、及び673cm−1(±3cm−1)に鋭いバンドを有する赤外線スペクトルにより特徴づけられる、請求項3記載の2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンの一硫酸塩の結晶。
- 請求項1〜4のいずれか一項記載の一硫酸塩の結晶、及び1種以上の薬学的に許容され得る担体を含む、医薬組成物。
- (a)その後の自然沈殿をともなう、2−クロロ−4−[1−(4−フルオロ−フェニル)−2,5−ジメチル−1H−イミダゾール−4−イルエチニル]−ピリジンを2−プロパノール中の硫酸で塩形成させる工程、
を含む、請求項1又は2記載の一硫酸塩の結晶の製造方法。 - (a)IPA/水(3:1 v/v)中での請求項1又は2記載の結晶の飽和スラリーを室温で形成すること、
を含む、請求項3又は4記載の一硫酸塩の結晶の製造方法。 - 治療活性物質として使用される、請求項1〜4のいずれか一項記載の一硫酸塩の結晶。
- 急性及び/又は慢性神経障害、不安からなる群から選択される障害の予防及び/又は治療のため、あるいは慢性及び急性の疼痛、薬物もしくは疾患が誘導した機能不全、尿失禁、肥満、脆弱X症候群又は自閉症の処置のための、請求項5記載の医薬組成物。
- 急性及び/又は慢性神経障害、不安からなる群から選択される障害の治療及び/又は予防のため、あるいは慢性及び急性の疼痛、薬物もしくは疾患が誘導した機能不全、尿失禁、肥満、脆弱X症候群又は自閉症の処置のための医薬を製造するための、請求項1〜4のいずれか一項記載の一硫酸塩の結晶の使用。
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