オカラミンNの短い,エナチオセレクティブの全合成
Phil S Baran1, Carlos A Guerrero, E J Corey
1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
Journal of the American Chemical Society
|May 8, 2003
まとめ
研究者らは,ビスインドルアルカロイドであるオカラミンNの最初のエナチオセレクティブ・トータル合成を達成しました. このブレークスルーでは,Pd (II) 媒介による循環と光酸化を含む新しい合成戦略を用いて,複雑な分子を作製した.
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 自然製品の合成
- 薬用化学 薬用化学について
背景:
- オカラミンなどのビスインドルアルカロイドは,潜在的な生物学的活動を持つ自然製品のクラスです.
- オカラミンの複雑な構造は,化学合成に重大な課題をもたらす.
- エナチオセレクティブ合成は,生物学的評価のための純粋なステレオアイソマーを得るために非常に重要です.
研究 の 目的:
- オカラミン (N. N.) の最初のエナンチオセレクティブ・トータル・シンセシスを達成する.
- 複雑なインドルアルカロイドに適用できる新しい合成方法論を開発する.
- オカラミンNおよびそのアナログにアクセスするためのスケーラブルな経路を提供するために.
主な方法:
- N-プレニル化されたトリプトファン誘導体の結合.
- パラジウム ((II) 媒介による循環と再配置.
- セレクティブエネ反応,光酸化,熱レトロエネ反応.
主要な成果:
- オカラミンN (1) の合成が成功し,中間物質から70%の産出率を得ました 6.
- 主要な中間物質 (2-7) を合成し,特徴づけました.
- エネ,光酸化,レトロエネ反応を含む新しい配列の開発.
結論:
- オカラミンNの最初のエナチオセレクティブトータル合成が達成されました.
- 開発された合成経路は,この複雑なビスインドールアルカロイドに効率的なアクセスを提供します.
- この方法論は,他の関連する天然製品の合成にも適用できる.
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