レドックス媒介のベルグマンサイクルを用いて,二重作用のメタロエネディネの治療薬の開発を目指す
Sarah E Lindahl1, Hyunsoo Park, Maren Pink
1Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA.
Journal of the American Chemical Society
|February 26, 2013
まとめ
安定したプラチナ (((0) メタロエネディイン複合体,Pt (((dppeb) 2は,酸化時に効率的なリドックス媒介のベルグマン循環を経る. この反応によりシスプラチンのような副産物が生成され,双重作用のメタロエネダイネ療法薬の新たな戦略が提案されます.
科学分野:
- 有機金属化学 有機金属化学
- マテリアルサイエンス 材料科学
- 薬用化学 薬用化学について
背景:
- メタロエネディインは,金属原子とエネディイン分子が含まれる化合物です.
- ベルグマンサイクル化は,エネダインの重要な反応であり,反応性パラベンジン中間物質を形成する.
- プラチナ複合体は,特にがん治療 (例えばシスプラチン) で,その治療的可能性のために調査されています.
研究 の 目的:
- 安定したプラチナ (((0) メタロエネダイネ複合体,Pt (((dppeb) 2.2) を合成し,特徴づけるために.
- この複合体の酸化還元媒介によるベルグマンサイクルを調査するために.
- 双重脅威のメタロエネダイネ療法としてのこのシステムの可能性を調査する.
主な方法:
- Pt(dppeb) 2をPt(cod) Cl2と1,2-bis((diphenylphosphino) ethynyl) benzene (dppeb) から合成する.
- ヨウ素 (I2) を使った酸化反応は,ラジカル・トラップ (1,4-サイクロヘクサディエン) を含む,または含まない.
- NMR (31P) とラーマン光譜を用いた特徴化.
- 反応中間物質の妥当な構造を決定するための計算分析.
主要な成果:
- 安定したPt(0) 複合体Pt(dppeb) 2が合成され,空気酸化と自発的なベルグマン循環に耐性があることが判明しました.
- I2とラジカル・トラップとの反応により,迅速にシス・ベルグマン・サイクライズされたジオイド生成物が得られました.
- 過剰なI2との反応により,転移安定したPt(dppeb) 2(2+) 中間物質が形成され,その後,リガンド交換と自発的なベルグマン循環を経てPt(dppnap-I2) I2.2.I2を形成した.
結論:
- 安定したPt(0) metalloenediyne Pt(dppeb) 2は,リドックス媒介のベルグマンサイクルで効率的に活性化することができる.
- この反応はシスプラチンのような副産物を生成し,二重の治療作用の可能性を示唆しています.
- このシステムは,メタロエネダイネベースの治療薬の開発のための有望な新しい戦略を表しています.
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