JP6893916B2 - 1−(4−(2−((1−(3,4−ジフルオロフェニル)−1h−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノン塩 - Google Patents
1−(4−(2−((1−(3,4−ジフルオロフェニル)−1h−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノン塩 Download PDFInfo
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- JP6893916B2 JP6893916B2 JP2018510067A JP2018510067A JP6893916B2 JP 6893916 B2 JP6893916 B2 JP 6893916B2 JP 2018510067 A JP2018510067 A JP 2018510067A JP 2018510067 A JP2018510067 A JP 2018510067A JP 6893916 B2 JP6893916 B2 JP 6893916B2
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- difluorophenyl
- methoxy
- ethyl
- piperazine
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Description
本発明では、1−(4−(2−((1−(3,4−ジフルオロフェニル)−1H−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノンまたは得られるその様々な塩を同定するために以下の技術が使用される。
− プロトン核磁気共鳴(1H−NMR)
プロトン核磁気共鳴分析は、5mmのブロードバンドプローブ(broadband probe)ATB 1H/19F/Xを備えたVarian Mercury 400分光計にて重水素化メタノール(CD3OD)中で記録した。スペクトルは、5〜10mgの試料を重水素化溶媒0.7mLに溶解して得た。
− X線粉末回折(XRPD)特性決定
XRPD分析は、Cu Kα放射線をBragg−Brentanoジオメトリで用いるPhilips製X’Pert回折計を使用して実行した。この系は、単一次元リアルタイム複数ストリップ検出器(monodimensional,real time multiple strip detector)を備える。ディフラクトグラムは毎分17.6°のスキャン速度で3°〜40°(2θ)を記録した。
− 示差走査熱量測定分析(DSC)
DSC分析をMettler Toledo DSC822eに記録した。1〜2mgの試料を、ピンホール蓋(pinhole lid)を備えた40μLのアルミニウムのるつぼへ量り入れ、窒素下(50mL/分)、30℃から300℃まで10℃/分の加熱速度で加熱した。データ収集および評価を、ソフトウェアSTAReを用いて行った。
実施例0は、先の特許出願、国際公開第2011/147910号で開示されるように調製でき、X線粉末回折(図1)および1H核磁気共鳴(図2)により特性決定した。
予め、化合物実施例0を用いて溶解度試験を行った。結果を第1表に示し、室温で対応する溶媒中に固体を溶解させるのに必要な体積数を示す。50体積で溶解が室温で観察されなければ、混合物を還流温度まで加熱した。
− 実施例0にプロトンを付加するのに十分な酸性度を持つ酸
− 薬剤として許容される化合物である酸
一般的な実験条件:
・湿式粉砕実験:
基本手順:2mLのマイクロチューブにおいて、実施例0および1当量の対応する酸を添加した。1滴の溶媒および2つの鋼球を各チューブに添加し、得られた混合物をボールミルで粉砕し(15分、30Hz、3回)、乾燥させた。液体酸の場合には、酢酸エチル溶液を予め調製し、1当量の酸に必要な体積をマイクロチューブに添加した。
EM−ESI+m/z:365(M+1−HCl)。
pH7.4およびpH2での熱力学的溶解度についての一般的プロトコルが記載されている。
○ A)pH7.4における熱力学的溶解度
緩衝液
pH7.4のリン酸緩衝液(25mM)を以下のように調製した。
25mMのNa2HPO4・12H2O(1Lの水に対して、重量8.96g)の溶液を調製した。
25mMのKH2PO4(水1Lに対して、重量3.4g)の溶液を調製した。
リン酸二ナトリウム溶液(812mL)およびリン酸カリウム(182mL)溶液を混合し、pHが7.4になるように確認した。
− 精密化学てんびんMettler Toledo AT20
− 化学てんびんMettler Toledo PJ300
− 液体クロマトグラフWaters Alliance 2695
− EppendorfのStirrer Thermomixer Control(25℃、1250rpm)
− 半微量電極を組み合わせたpHメーター。
試験物質
HPLCバイアル中の約4mgの化合物(二重で)を1mLの緩衝液に溶解した。Thermomixer Comfortシステム内を25℃で24時間撹拌した後、熱力学的平衡を達成するために、溶液を3000rpmで15分間遠心分離した。
化合物全体の溶解度を保証するために、メタノール中で標準物質を形成した。標準較正物質の調製を以下に示す。
溶液A:1mLメタノール中4mg(4000μg/mL)
溶液B:メタノールにより溶液A0.5mLを5mLへ(400μg/mL)
溶液C:メタノールにより溶液B1mLを10mLへ(40μg/mL)
溶液D:メタノールにより溶液C5mLを50mLへ(4μg/mL)
溶液E:メタノールにより溶液D4mLを10mLへ(1.6μg/mL)
・カラム:XBridge C18(または同様のもの)2.5μm 4.6×50mm
・温度:35℃
・移動相:ACN/重炭酸アンモニウム 10mM
・勾配:0〜3.5分:15%ACN〜95%ACN
3.5〜5分:95%ACN
5〜6分:95〜15%ACN
6〜8分:15%ACN
・流速:1.5ml/分
・検出:最大UV波長付近
先の同じ手順を、緩衝液の代わりに0.01NのHClを用いて行った。
実施例1および2の薬物動態を以下のプロトコルを使用して試験した。
Harlanにより供給される250〜300g(±20)のオスウィスターラットを使用した。研究の間、水および餌が適宜利用可能であった。
2匹のラット(R1およびR2)を薬物動態学的経口試験に使用した。
単回用量の試験化合物を0.5%ヒドロキシプロピルメチルセルロース(1mg/ml)中で強制経口投与[遊離塩基(実施例0)として10mg/kg]によって投与した。各ラットから、連続血液試料を15分および30分、1時間、2時間、3時間、5時間、7時間および24時間時点で収集した。
血漿試料中の試験化合物濃度は、10点検量線を用いた最小二乗線形回帰によって決定した。検量線は、1mg/mlのDMSO希釈標準溶液からのブランク血漿中で準備した。
試験化合物の血漿濃度は、以下の方法により高速液体クロマトグラフィ−三連四重極型質量分析法(HPLC−MS/MS)によって決定した。
カラム:Atlantis(登録商標)T3カラム(2.1×100mm、3μm)(Waters)
移動相:A:0.0155% ギ酸水溶液
B:0.0155% ギ酸アセトニトリル
オートサンプラー洗浄:溶媒1:アセトニトリル
溶媒2:5%アセトニトリル+95%水
標準薬物動態学的パラメーター、例えば、曲線下面積(AUC)、ピーク血漿濃度(Cmax)、ピーク濃度までの時間(tmax)、経口バイオアベイラビリティ(F)、総血漿クリアランス(Cl)、定常状態における分布容積(Vss)、平均滞留時間(MRT)、および終末相半減期(t1/2)は、血漿濃度−時間曲線のノンコンパートメント解析により決定した(Phoenix v.6.2.1.51、Pharsight、カリフォルニア州)。
− ラットへの10mg/kgの経口投与後、実施例1は、投与後0.6時間で約1000ng/mlのピーク血漿濃度を達成し(第9表)、良好な経口バイオアベイラビリティ(60%)を示す(第10表)。
− 終末相半減期は非常に短い(1時間未満)。この終末相半減期は、高い血漿クリアランス(70%の肝血流量)に関連する。
− 実施例1は、体内の総水分量より高い分布量を示している(1.2対0.6l/kg)。この結果は、実施例1が細胞膜を通過することができ、かつ/または組織成分に対して親和性を有することを示唆している。
− ラットへの10mg/kgの経口投与後、実施例2は、投与後0.4時間で約1213ng/mlのピーク血漿濃度を達成した(第11表)。
− 終末相半減期は中程度である(1.5時間)(第12表)。
Claims (12)
- 1−(4−(2−((1−(3,4−ジフルオロフェニル)−1H−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノンの結晶性塩であって、
前記塩が、ヒドロクロリド、マレエート、フマレート、マロネート、サクシネート、オキサレート、および/またはヒドロブロミドから選択される、結晶性塩。 - 前記結晶性塩が、1−(4−(2−((1−(3,4−ジフルオロフェニル)−1H−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノンのヒドロクロリド塩である、請求項1に記載の結晶性塩。
- 前記結晶性塩が、1−(4−(2−((1−(3,4−ジフルオロフェニル)−1H−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノンのマレエート塩である、請求項1に記載の結晶性塩。
- 請求項1から3のいずれか一項に記載の結晶性塩を少なくとも含んでなる、医薬組成物。
- シグマ受容体媒介性疾患または状態を治療および/または予防するための、請求項4に記載の医薬組成物。
- 下痢;リポタンパク質障害(lipoprotein disorder);片頭痛;肥満症;関節炎;高血圧;不整脈;潰瘍;学習障害、記憶障害および注意欠陥障害;認知障害;神経変性病;脱髄疾患;薬物および化学物質中毒;遅発性ジスキネジア;虚血性発作;てんかん;脳卒中;ストレス;癌;精神病状態;炎症;または自己免疫疾患からなる群から選択される疾患を治療および/または予防するための、請求項4に記載の医薬組成物。
- 前記薬物および化学物質中毒が、コカイン、アンフェタミン、エタノールおよびニコチンを含むものである、請求項6に記載の医薬組成物。
- 前記精神病状態が、鬱病、不安および統合失調症から選択されるものである、請求項6に記載の医薬組成物。
- 疼痛を治療および/または予防するための、請求項4に記載の医薬組成物。
- 疼痛を治療および/または予防するための請求項4に記載の医薬組成物であって、当該医薬組成物が含んでなる前記結晶性塩が、1−(4−(2−((1−(3,4−ジフルオロフェニル)−1H−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノンのヒドロクロリド塩である、医薬組成物。
- 疼痛を治療および/または予防するための請求項4に記載の医薬組成物であって、当該医薬組成物が含んでなる前記結晶性塩が、1−(4−(2−((1−(3,4−ジフルオロフェニル)−1H−ピラゾール−3−イル)メトキシ)エチル)ピペラジン−1−イル)エタノンのマレエート塩である、医薬組成物。
- 前記疼痛が、神経因性疼痛、炎症性疼痛、または異痛および/もしくは痛覚過敏に関わる他の疼痛状態である、請求項9〜11のいずれか一項に記載の医薬組成物。
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UA124301C2 (uk) | 2021-08-25 |
RU2018111429A (ru) | 2019-10-03 |
KR20180048923A (ko) | 2018-05-10 |
US10640468B2 (en) | 2020-05-05 |
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US20180251430A1 (en) | 2018-09-06 |
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AR105888A1 (es) | 2017-11-22 |
RU2727974C2 (ru) | 2020-07-28 |
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IL257671A (en) | 2018-04-30 |
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