キラルリン酸によって触媒化されたα分岐型サイクルケトンの直接非対称なアミネーション
1Department of Chemistry, University of California , Berkeley, California 94720, United States.
Journal of the American Chemical Society
|February 27, 2015
まとめ
キラルリン酸は,サイクルケトンの非対称なアミネーションを触媒化し,有価なNを含む四次性ステレオセンターを生成する. この方法では, (S) -ケタミンなどの医薬品を合成するのに有用な,エナンチオ濃縮ケトンも得られます.
科学分野:
- 有機化学 オーガニック・ケミストリー
- アシンメトリック・カタリシス
- 合成方法論 合成方法論
背景:
- 四次元のステレオセンターは,医薬品や天然製品の重要なモチーフです.
- ケトンの直接的非対称アミネーションは,合成化学における重要な課題である.
- チラルのリン酸は,様々な非対称的変換の強力な触媒として登場しました.
研究 の 目的:
- α置換されたサイクルケトンの直接非対称なアミネーションのための新しい方法を開発する.
- N含有四次性ステレオセンターの形成において,高収量とエナチオ選択性を達成する.
- 開発された方法論の有用性を,価値ある医薬品中間物質の合成において実証する.
主な方法:
- α 置換されたサイクルケトンを基質として使用した直接非対称アミネーション反応.
- キラルリン酸による触媒.
- 反応条件の最適化により,高収量とエナチオ選択性を得る.
- 特定の条件下でのスタートケトンの運動解像度.
主要な成果:
- N含有四次性ステレオセンターの合成が成功し,高収量と優れたエナチオ選択性を持つ.
- 発端ケトンの動的解像度の観察により,エナンチオに富んだα分岐ケトンが得られます.
- (S) - ケタミンの簡潔な合成による方法の有用性の実証.
結論:
- 開発されたキラルリン酸触媒法により,Nを含む四次性ステレオセンターへの効率的な経路が提供されています.
- この方法論は,価値あるα分岐ケトンを生産するための運動解像度も可能にするという二重の利点を提供します.
- このアプローチは,医薬品開発における応用を持つ非対称合成における重要な進歩を表しています.
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