1,2-ボロナート移行によるステレオ選択C,B-グリコシレーション
Wei-Cheng Zhao1, Rui-Peng Li1, Chao Ma1
1CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China.
Journal of the American Chemical Society
|February 3, 2022
まとめ
研究者らは,無痕離基とボロナート移動を用いたステレオ選択的ゲミナルビスグリコシレーションの新しい方法を開発した. これにより,糖類のアノメリックセンターで同時にC-CとC-B結合が形成されます.
科学分野:
- 炭水化物の化学
- 有機合成
- オーガノボロン化学
背景:
- 複雑な炭水化物のステレオ選択的合成は依然として大きな課題です.
- ゲミナルビスグリコシレーションの効率的な方法は,生物学的に重要な分子を構築するために不可欠です.
- 既存の方法はしばしば効率的でないか,広く適用できない.
研究 の 目的:
- サッカライドのステレオ選択的ゲミナルビスグリコシレーションのための新しいプロトコルを作成する.
- C-C と C-B 結合をアノメリックセンターで同時に導入する方法を開発する.
- 生物活性結合体と骨格の合成におけるメソッドの有用性を実証する.
主な方法:
- トリフェニルフォスフィン (PPh3) を無痕のグリコシド基として利用した.
- "1,2ボロナート"の 移行戦略を採用した.
- フラノースとピラノースに適用した.
主要な成果:
- C-CとC-B結合の同時形成をアノメリックステレオジェニックセンターで達成した.
- グライコシライゼーション製品のサイト選択的改変が実証されている.
- 生物学的結合体と骨格の構造を展示した
- 同時にアルケンの無金属の1,1-機能化プロセスが示された.
結論:
- 開発されたプロトコルは,ステレオ選択的なゲミナルビスグリコシレーションに強力で多用途なアプローチを提供します.
- この方法は複雑な炭水化物構造と 価値ある有機的な構成要素にアクセスできます
- このプロトコルの効率性と広範な適用性は,生物活性分子合成における使用によって強調されています.
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