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Split-and-pool Synthesis and Characterization of Peptide Tertiary Amide Library
Published on: June 20, 2014
N-アシルアリルスルフィナミドのサブチリシン触媒による解像度
Christopher K Savile1, Vladimir P Magloire, Romas J Kazlauskas
1Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, H3A 2K6, Canada.
Journal of the American Chemical Society
|February 17, 2005
まとめ
この研究は,非対称なアミン合成に不可欠なキラルスルフィナミドを生成するための最初のバイオカタリティック方法を導入しています. 特定の酵素であるサブチリシンEは,これらの化合物を分解する際に高いエナチオセレクティブ性を示し,貴重なキラル補助物質を生成しました.
科学分野:
- 有機化学 オーガニック・ケミストリー
- バイオカタリシス バイオカタリシス
- 酵素工学とは
背景:
- サルフィナミドはキラル硫黄ステレオセンターを有し,非対称合成における貴重なキラル補助物質となります.
- 合成のための効率的でエナチオセレクティブな方法の開発は,キラルアミンの合成に不可欠です.
研究 の 目的:
- エナチオメリックに濃縮されたスルフィナミドの合成のための最初の生物触媒経路を確立する.
- サルフィナミド水解におけるサブチリシンEの基板範囲とエナチオセレクティブ性を調査する.
主な方法:
- サブチリシンEを使用した様々なアリルスルフィナミドの酵素性水解.
- サルフィナミドのグラムスケールの解像度.
- バチルス・サブティリスにおけるサブチリシンEの過剰発現.
- 基質結合とエナチオ選択性の決定因子を明らかにするための分子モデリング.
主要な成果:
- サブティリシンEは,選択的に水解されたN-クロロアセチルおよびN-ダイヒドロシナモイル・アリルスルフィナミドを,高エナンチオセレクティブ性 (E > 150) とする.
- グラムスケールの解像度では,3つの有用なキラルスルフィナミド補助物質: (R) -p-トルエネスルフィナミド (95% ee), (R) -p-クロロベンゼンスルフィナミド (97% ee),および (R) -2,4,6-トリメチルベンゼンスルフィナミド (99% ee) が得られました.
- 分子モデリングは,特定のアシル基がフェニララニンを模倣し,結合を促進し,S1'ポケットドライブのエナチオセレクティブ性における水害性相互作用を示した.
結論:
- サブチリシンEを用いたバイオカタリシスは,価値あるキラル・スルフィナミド補助体へのアクセスのための効率的で高度なエナチオセレクティブの方法を提供します.
- この発見は,これらの重要な合成構成要素を大規模に製造するための実用的な経路を提供します.
- 分子モデリングは,観察されたエナチオセレクティブ性を支配する酵素基板相互作用の洞察を提供します.
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