エナティオメリックに純粋なβ分岐アルファアミノ酸への多用途の化学酵素経路
Geoffrey J Roff1, Richard C Lloyd, Nicholas J Turner
1School of Chemistry, University of Edinburgh, King's Buildings, West Mains Road, Edinburgh, EH9 3JJ, U.K.
Journal of the American Chemical Society
|April 1, 2004
まとめ
研究者らは,化学およびバイオカタリシスを用いて,エナチオメリックに純粋なβ-メチル-β-フェニラララニンの類似体を合成した. この新しいアプローチにより,これらの貴重な化合物の4つのダイアステレオイソマーすべてにアクセスできます.
科学分野:
- 有機化学 オーガニック・ケミストリー
- カタリシス カタリシス カタリシス
- バイオケミストリー バイオケミストリー
背景:
- ベータ-メチル-ベータ-フェニララニンの類型は,医薬品化学における重要な構成要素である.
- これらの化合物のエナティオメリックに純粋なダイアステレオイソマーにアクセスすることは困難である可能性があります.
- 既存の合成方法では,望ましいステレオアイソマーをすべて効率的に提供できない可能性があります.
研究 の 目的:
- エナティオメリックに純粋なβ-メチル-β-フェニララニンの同類物を製造するための汎用性の高い合成戦略を開発する.
- これらの化合物の4つの可能なダイアステレオアイソマーセットをすべて得るために.
- ステレオ選択的合成のための化学化学と生物触媒の組み合わせの使用を調査する.
主な方法:
- l-スレオニンメチルエステルからβ,β-非置換されたダイデヒドロアミノ酸 (Z) -異体体の合成.
- キラルロジウム触媒を用いたダイデヒドロアミノ酸の非対称な水素化.
- アミノ酸酸化酵素と還元剤を用いたステレオセレクティブ酵素逆転.
主要な成果:
- ベータ-メチル-ベータ-フェニララニン類 (1a-f) をエナティオメリックに純粋な形で一連の製剤に成功しました.
- 非対称な水素化と水解により,2組のダイアステレオアイソマーを得ました.
- その後のステレオインバーションにより,残りの2組のダイアステレオイソマーを生成した.
結論:
- 化学化学と生物触媒の組み合わせによるアプローチは,β-メチル-β-フェニラララニン類の多様なダイアステレオアイソマーの合成に有効です.
- この方法は,これらの貴重な化合物のすべてのステレオ化学的に異なる形態へのアクセスを提供します.
- この戦略は,複雑なアミノ酸誘導体を生成するための堅牢なプラットフォームを提供します.
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