双子のブフォガリジンAとBの非対称的全合成
Li-Ping Zhong1, Rui Feng1, Jing-Jing Wang1
1Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.
Journal of the American Chemical Society
|January 19, 2023
まとめ
複合性双子のステロイドであるブフォガリジンAとBの合成が初めて達成されました Ru-catalyzed [5+2] cycloadditionを含む新しい合成戦略が,彼らのユニークなテトラサイクルフレームワークを構築するために使用されました.
科学分野:
- 有機化学
- 自然製品合成
- 薬剤化学
背景:
- ブフォガリジンAとBは 異常に酸素濃度が高い 双子のステロイドです
- これらのステロイドは複雑で再編成された四環環システム ([7-5-6-5]と [5-7-6-5]) を有する.
- その複雑な構造は 重要な合成課題を提示します
研究 の 目的:
- ブルフガリジンAとBの非対称な合成を 達成する
- 複合的な多循環性天然製品を作るための新しい合成方法論を開発する.
- 独特のステロイド構造の 化学的空間を探求するためです
主な方法:
- 内分子ルテニウム触媒による [5+2] サイクル添加反応.
- 主要な基質としてビニルエーテル・サイクロプロパン・イネ.
- レトロアルドール/環状アルドールカスケード反応.
- 非対称な合成戦略
主要な成果:
- ブフォガリジンAの [7-5-6-5] テトラサイクルコアの効率的な構築
- ブフォガリジンBの [5-7-6-5] テトラサイクル骨格の二次選択構造
- 複雑なステロイド合成のための新しい合成経路の実証.
結論:
- ブフォガリジンAとBの最初の非対称的全合成が成功しました.
- Ru-触媒化されたサイクル添加とアルドールカスケードを含む新しい合成戦略は,複雑なステロイド構造へのアクセスを可能にします.
- この研究は,これらの天然製品の生物学的活動と構造的な類似点に関するさらなる調査のための基礎を提供します.
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