JP7346571B2 - ドーパミン応答性障害の治療のための糖にコンジュゲートされたl-dopa及び/またはdopaデカルボキシラーゼ阻害剤 - Google Patents
ドーパミン応答性障害の治療のための糖にコンジュゲートされたl-dopa及び/またはdopaデカルボキシラーゼ阻害剤 Download PDFInfo
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Description
式中、R7及びR8は、それぞれ、H、-NH2、-NHNH2、-CH3、-CHF2から選択される。
2.その溶液から200μlのアリコートをすぐに取り出した。
3.180μlのTCA(トリクロロ酢酸)0.6N溶液を加えた。
4.得られた混合物を遠心分離した(5,000rpm、15分、40℃)。
5.0.22μmのフィルタによって上澄みを濾過した。
6.濾液を20倍に希釈し、液体クロマトグラフィー質量分析(LC-MS)(カラム:LUNA 3u C18(2)100A;150±1.0mm)に注入した。溶離液は、A=アセトニトリル、B=H2O+0.1%酢酸であった。以下のLCグラジエントを使用した。
Claims (20)
- 糖アルコールまたは単糖と、
2個以上のL-DOPA部分と、
を含むコンジュゲートであって、
前記糖アルコールまたは単糖が、前記L-DOPA部分のそれぞれのカルボキシル基にコンジュゲートされている、
ことを特徴とするコンジュゲート。 - 前記糖アルコールまたは単糖が、マンニトール、グルコースまたはガラクトースを含むことを特徴とする請求項1に記載のコンジュゲート。
- 前記コンジュゲートが、1以上のDOPAデカルボキシラーゼ阻害剤の部分をさらに含み、
前記DOPAデカルボキシラーゼ阻害剤が、前記DOPAデカルボキシラーゼ阻害剤のカルボキシル基、または、前記DOPAデカルボキシラーゼ阻害剤に結合したスペーサーのカルボキシル基を介して、前記糖アルコールまたは単糖のヒドロキシル基にコンジュゲートされており、
前記DOPAデカルボキシラーゼ阻害剤が、カルビドパ、メチルドーパ、アルファ-ジフルオロメチル-DOPA、または、それらの組み合わせを含む、
ことを特徴とする請求項1または2に記載のコンジュゲート。 - 前記DOPAデカルボキシラーゼ阻害剤がベンセラジドをさらに含み、
前記スペーサーがジカルボン酸を含むことを特徴とする請求項3に記載のコンジュゲート。 - 前記コンジュゲートが、
(a)1個のマンニトール部分及び2-4個のL-DOPA部分、または
(b)1個のマンニトール部分、2-4個のL-DOPA部分、及び1個以上のカルビドパ部分を含むことを特徴とする請求項1~4のいずれか1項に記載のコンジュゲート。 - 前記コンジュゲートが、
1個のマンニトール部分及び2個のL-DOPA部分を含むことを特徴とする請求項5に記載のコンジュゲート。 - 前記コンジュゲートが、
1個のマンニトール部分及び4個のL-DOPA部分を含むことを特徴とする請求項5に記載のコンジュゲート。 - ドーパミン作動性刺激に応答する運動障害を治療、抑制または阻害する方法において使用するための、請求項1~7のいずれか1項に記載の1以上のコンジュゲートと、薬学的に許容される担体と、を含むことを特徴とする医薬組成物。
- 前記医薬組成物が、鼻腔内、静脈内、皮下、経口、直腸、経皮、十二指腸内、吸入または肺内投与用に製剤化されていることを特徴とする請求項8に記載の医薬組成物。
- 前記医薬組成物が鼻腔内投与用に製剤化され、
前記薬学的に許容される担体が、塩化ナトリウム、デキストロース、水酸化ナトリウム、塩酸、硫酸、窒素、塩化ベンザルコニウム、エタノール、プロピレングリコール、ベクゾイルアルコール、クロロブタノール、メチルパラベン、クエン酸ナトリウム、リン酸ナトリウム、ポリソルベート80、ポリソルベート20、EDTAジナトリウム、CMC、Na CMC、アルコール、PEG400、プロピレングリコール及びグリセリンから選択されることを特徴とする請求項8に記載の医薬組成物。 - 1以上のコンジュゲートされていないDOPAデカルボキシラーゼ阻害剤、カテコール-O-メチルトランスフェラーゼ阻害剤またはそれらの組み合わせを含む治療用化合物をさらに含むことを特徴とする請求項8に記載の医薬組成物。
- 1以上の前記DOPAデカルボキシラーゼ阻害剤が、カルビドパ、ベンセラジド、メチルドーパ、アルファ-ジフルオロメチル-DOPAまたはそれらの組み合わせを含むことを特徴とする請求項11に記載の医薬組成物。
- 前記カテコール-O-メチルトランスフェラーゼ阻害剤が、エンタカポン、トルカポン、オピカポンまたはそれらの組み合わせを含むことを特徴とする請求項11に記載の医薬組成物。
- 前記糖アルコールまたは単糖が、前記糖アルコールまたは単糖のヒドロキシル基を介して、前記DOPAデカルボキシラーゼ阻害剤のカルボキシル基、または、前記DOPAデカルボキシラーゼ阻害剤に結合したスペーサーのカルボキシル基にコンジュゲートされており、
前記DOPAデカルボキシラーゼ阻害剤が、カルビドパ、メチルドーパ、アルファ-ジフルオロメチル-DOPAまたはそれらの組み合わせを含むことを特徴とする請求項11に記載の医薬組成物。 - 前記運動障害が、継続的なドーパミン作動性刺激を必要とし、パーキンソン病、一酸化炭素中毒またはマンガン中毒後の症候性パーキンソニズム、ドーパミン応答性ジストニア、レストレスレッグス症候群、1以上のパーキンソンプラス症候群またはそれらの組み合わせを含むことを特徴とする請求項8に記載の医薬組成物。
- 前記パーキンソン病が、症候性パーキンソン病、運動合併症を伴う進行性パーキンソン病、特発性パーキンソン病、医原性パーキンソン病、血管性パーキンソン病、脳炎後パーキンソニズムまたはそれらの組み合わせを含み、
前記ドーパミン応答性ジストニアが、瀬川病を含み、
前記パーキンソンプラス症候群が、シヌクレイノパチー、タウオパチー、多系統萎縮症、タウオパチー様前頭側頭型変性症、大脳皮質基底核変性症、レビー小体型認知症、びまん性レビー小体病、オリーブ橋小脳萎縮症またはそれらの組み合わせを含むことを特徴とする請求項15に記載の医薬組成物。 - 前記タウオパチー様前頭側頭型変性症が、進行性核上性麻痺、ピック病またはそれらの組み合わせを含むことを特徴とする請求項16に記載の医薬組成物。
- 前記コンジュゲートが、10-3000mgの1日用量で対象に投与されることを特徴とする請求項8に記載の医薬組成物。
- 1個のマンニトール部分と2-6個のL-DOPA部分とを含むコンジュゲート、または徐放形態のL-DOPA及びマンニトールを生成する方法であって、
(a)メチル-L-DOPA塩酸塩を生成すべく、L-DOPAをSOCl2及びCH3OHと組み合わせるステップと、
(b)テトラベンジルメチルL-DOPAを生成すべく、アセトニトリル中で、前記メチル-L-DOPA塩酸塩をK2CO3、KI、臭化テトラブチルアンモニウム及び臭化ベンジルと組み合わせるステップと、
(c)テトラベンジルL-DOPAを生成すべく、テトラベンジルメチルL-DOPAをNaOHで加水分解することにより、テトラベンジルメチルL-DOPAからメチル基を除去するステップと、
(d)(i)(1S,2R)-1,2-ビス((R)-2,2-ジメチル-1、3-ジオキソラン-4-イル)-2-ヒドロキシエチル3-(3,4-ビス(ベンジルオキシ)フェニル)-2-(ジベンジルアミノ)プロパノエート、(ii)(4R,4'R,5R,5'R)-2,2'-ジフェニル-4,4'-ビ(1,3-ジオキサン)-5,5'-ジイルビス(3-(3,4-ビス(ベンジルオキシ)フェニル)-2-(ジベンジルアミノ)プロパノエート)または(iii)(2R,3R,4R,5R)-3,6-ビス(ベンジルオキシ)ヘキサン-1,2,4,5-テトライルテトラキス(3-(3,4-ビス(ベンジルオキシ)フェニル)-2-(ジベンジルアミノ)プロパノエート)をそれぞれ生成すべく、テトラベンジルL-DOPAを、(i)ジイソプロピリデンマンニトール、(ii)1,3:4,6ジ-O-ベンジリデン-D-マンニトールまたは(iii)(2R,3R,4R,5R)-3,4-ビス(ベンジルオキシ)ヘキサン-1,2,5,6-テトラオールと組み合わせるステップと、
Pd/CまたはPdOH/Cを触媒として使用し、H2で水素化することにより、ステップ(d)の生成物からベンジル基を除去するステップと、を含み、
これにより、前記マンニトールと前記2-6個のL-DOPA部分とを含むコンジュゲートを生成することを特徴とする方法。 - ステップ(d)において(2R,3R,4R,5R)-3,4-ビス(ベンジルオキシ)ヘキサン-1,2,5,6-テトラオールを生成する方法が、
(a)生成物(14)を生成すべくジイソプロピリデンマンニトールを臭化ベンジルと組み合わせるステップを含む、ベンジル基をジイソプロピリデンマンニトールへ付加するステップと、
(b)イソプロピリデン基を除去すべく生成物(14)をH2SO4/シリカと組み合わせるステップを含む、生成物(14)からイソプロピリデン基を除去するステップと、を含み、
これにより、ジイソプロピリデンマンニトールから(2R,3R,4R,5R)-3,4-ビス(ベンジルオキシ)ヘキサン-1,2,5,6-テトラオールを生成することを特徴とする請求項19に記載の方法。
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