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1つの光触媒,nの活性化方式カスケード触媒の戦略: (-) リボフラビンによるクマリン生物合成のエミュレーション

Jan B Metternich¹, Ryan Gilmour¹

¹Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany.

Journal of the American Chemical Society

|December 31, 2015

まとめ

この研究は,イソメリゼーションとサイクリングを連続的に誘発するために (-) リボフラビンを使用して,有機光化学における新しい触媒的アプローチを導入します. この方法は天然のクマリン生物合成を模倣して複雑な分子を効率的に合成します

科学分野:

有機光化学
カタリシス
合成化学

背景:

単一の触媒で分子複合性を生成するには,異なる活性化モードの連続的な利用が必要です.
オーガノカタリシス (例えば,マクミランの研究) では成功しているものの,この原理は他の触媒分野ではあまり探求されていない.
既存の合成戦略では,複雑な分子の組み立てには,前もって機能化された基板が必要である.

研究の目的:

連続的な触媒活性化モードの概念を有機光化学に拡張する.
薬学的に重要な基板を合成するための新しい触媒方法を開発する.
光化学を用いたクマリン生物合成経路の重要なステップを模倣する.

主な方法:

二重活性化モード:エネルギー転送 (ET) と単電子転送 (SET) を利用する光触媒として (-) リボフラビンを使用した.
連続的に誘導されたETによるE → Zイソメリゼーション,続いてSETによるサイクル化.
クマリン生物合成をエミュレートする応用が示された.

主要な成果:

単一の光触媒を用いて順次性イソメリゼーションとサイクル化が成功しました.
SETベースのサイクリングステップは,事前機能化されたアリルリングの必要性を排除した.
薬剤学的に重要な解離装置を開発した

結論:

この研究は,フォトレドックス触媒における連続活性化のための新しいパラダイムを確立する.
開発された方法は,複雑な分子構造への効率的で汎用的な経路を提供します.
クマリン誘導体および関連化合物を合成するための新しい解離戦略を提供します.

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