活性化されていないC−H結合にナイトレン挿入による人工メタロ酵素触媒によるエナチオセレクティブアミデーション
Kun Yu1, Zhi Zou1, Nico V Igareta1
1Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, Basel CH-4058, Switzerland.
Journal of the American Chemical Society
|July 20, 2023
まとめ
人工金属酵素 (ArM) は,活性化されていないC ((sp3) -H結合のエナチオセレクティブC-Hアミデーションを可能にします. この突破は高い活性と選択性を達成し,新しい窒素含有分子合成の道を開きました.
科学分野:
- キャタリシス
- 生物化学
- 有機化学
背景:
- エナチオセレクティブC-Hアミデーションは,有価な窒素を含む化合物の合成に不可欠である.
- 酵素的および均質な触媒方法の両方がC-Hアミデーションのために開発されています.
研究 の 目的:
- 新しい人工メタロ酵素 (ArM) をエナチオセレクティブC-Hアミデーションに開発する.
- アームを最適化して 活動性と選択性を向上させる
主な方法:
- イリジウム複合体は ストレプタヴィジンに結合して ARM を生成した.
- イリジウム共因子とストレプタヴィディンの化学遺伝的最適化が行われました.
- X線結晶学と量子力学-分子力学 (QM-MM) の計算を用いた.
主要な成果:
- ArMは,活性化されていないC ((sp3) -H結合のエナチオセレクティブアミデーションを成功裏に触媒化した.
- 活性とエナチオ選択性の有意な改善は,最適化によって達成された.
- 700を超える売上高 (TON) と92%のエナティオメール過剰 (ee) が得られた.
結論:
- 開発されたArMは,人工ナイトレン挿入酵素 (ANIase) で,C-Hアミデーションの非常に効果的な触媒である.
- ARM内の第2の調整球の相互作用は,その強化された触媒性能にとって極めて重要です.
- この研究は,複雑な化学変換のための先進的な金属酵素の設計に関する洞察を提供します.
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