アルキニレポキシドモジュールのクロスカップリングを特徴とするポリエネ-ポリオールマクロリドRK-397の全合成
Svetlana A Burova1, Frank E McDonald
1Department of Chemistry, Emory University, 1515 Pierce Drive, Atlanta, Georgia 30322, USA.
Journal of the American Chemical Society
|February 26, 2004
まとめ
研究者らは,ポリアセタート構造のための新しい合成戦略を開発し,天然製品RK-397.7の効率的な全合成を可能にしました. このモジュール式アプローチは,関連する化合物やステレオアイソマーを作成するための柔軟性を提供します.
科学分野:
- 有機化学 オーガニック・ケミストリー
- 自然製品合成 自然製品合成
- 薬用化学 薬用化学について
背景:
- RK-397を含むポリアセタート天然製品は,重要な生物学的活性を持つ複雑な構造を有しています.
- ポリアセタート組立のための既存の合成方法は,長くなり,モジュール性が欠けている可能性があります.
- 効率的で柔軟な戦略の開発は,これらの貴重な化合物にアクセスするために不可欠です.
研究 の 目的:
- 自然製品RK-397.7の全合成を達成するために.
- ポリアセタートフレームワークの構築のための新しい,モジュラー合成戦略を確立する.
- 関連するマクロリドおよびステレオアイソマーへのアクセス戦略の柔軟性を実証する.
主な方法:
- 核好性終端アルキンモジュールと電好性エポキシドの交叉結合を伴う新しい戦略.
- 4つの主要なモジュールからRK-397の構築:ポリエンの前駆体と3つのアルキンの末端のモジュール.
- アルキニルアルコールを,ヒドロキシル誘導水酸化,C-Si結合酸化,およびステレオ選択的ケトン還元による1,3-ダイオールへのステレオ選択的変換.
主要な成果:
- 自然産物RK-397.7の完全な合成が成功しました.
- ポリアセテートユニットを組み立てるための効率的なクロスカップリング反応の実証.
- 各モジュールの合成を通して,立体化学的制御が維持されました.
- この戦略は,主要な中間物質を,高いステレオ選択性を持つ1,3-ジオールに変換することを可能にします.
結論:
- 開発された合成戦略は高度に収束し,モジュラーであり,RK-397.7の合成を容易にする.
- このアプローチにより,他のポリエネ-ポリオールマクロリドおよびさまざまなステレオアイソマーにアクセスできます.
- この方法論は,将来の天然製品合成と薬剤発見の取り組みのための柔軟なプラットフォームを提供します.
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