単一酸素による有機ビスホスフォナートの感受性の高い光分解
Kenneth Hanson1, Dennis L Ashford, Javier J Concepcion
1Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Journal of the American Chemical Society
|October 3, 2012
まとめ
新しい光化学反応により,ビスホスフォナート群をカルボキシル酸とリン酸に変換する. この発見は,光電気化学アプリケーションと薬剤の安定性のための金属酸化物染色体に影響を与える.
科学分野:
- フォトケミストリー フォトケミストリー
- マテリアルサイエンス 材料科学
- 協調化化学について
背景:
- 金属酸化物に結合した染色体は,光電気化学の応用において極めて重要です.
- これらの染色体の安定化は,デバイスの長寿に不可欠です.
- ビスホスフォナート機能群は,安定性のために金属複合体で使用されます.
研究 の 目的:
- 金属複合体のビスフォスフォナート群を含む新しい光化学反応を発見し,特徴づけること.
- この反応のメカニズムを理解するために.
- 光電気化学の応用と薬剤の安定性への影響を調査する.
主な方法:
- ビスフォスフォナートリガンドによる新型ルテニウム複合体の合成: [Ru(bpy) ((2) ((4,4'- (((C(OH) ((PO ((3) H ((2))) ((2) bpy)) ((2+)) .
- ルテニウム複合体とシングレット酸素を含む光化学反応の研究.
- リゼドロン酸,ビスホスフォナート薬を使用した関連反応の調査.
主要な成果:
- 新しい光化学反応が発見され,ビスホスフォナート群 (-C(PO(3) H(2)) (((2) ((OH)) がカルボキシル酸 (-COOH) とリン酸 (H(PO(3) ((4)) に変換される.
- 反応は,ルテニウム複合体の興奮状態から生成された単離酸素 ((1) O ((2)) 経由で進行する.
- (1) O (((2) は,ビスフォスフォナート置換剤を酸化する.
- 同様の反応は,光化学的条件下で,ビスホスフォナート薬であるリゼドロン酸で観察されました.
結論:
- この研究は,シングレット酸素によるビスホスフォナート群の分解のための新しい経路を明らかにしています.
- この発見は,光電気化学装置における金属酸化物結合クロモフォールの安定性について意味を持つ.
- 反応メカニズムは,ビスホスフォナートを含む薬物の光への曝露下での安定性についての洞察を提供します.
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