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ラキシジンAの総合成と絶対構成の決定
Feng Sang1, Dongmei Li, Xiaolong Sun
1College of Pharmacy, State Key Laboratory of Elemento-Organic Chemistry, State Key Laboratory of Medicinal Chemical Biology, Nankai University , Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071 P. R. China.
Journal of the American Chemical Society
|October 7, 2014
まとめ
研究者らは,潜在的抗がん幹細胞活性を持つサイクルデプシペプチドであるラキシジンAのステレオ化学を決定した. 総合成により,その絶対的構成が確認され,慢性骨髄性白血病の将来の薬の開発に寄与した.
科学分野:
- 自然製品化学 自然製品化学
- 薬用化学 薬用化学について
- オーガニック・シンセシス オーガニック・シンセシス
背景:
- ラキシジンAは周期性デプシペプチドで,慢性骨髄性白血病の幹細胞に対する成長抑制効果が実証されています.
- この分子は5つのキラルセンターを有し,32個の潜在的なステレオアイソマーにつながり,構造の解明と生物学的評価を複雑にします.
研究 の 目的:
- ラキシジンAのステレオ化学的配分を予測し,確認する.
- 提案された構造と絶対的構成を検証するために,ラキシジンAを合成する.
- 関連する循環性デプシペプチドのキラルセンターの決定のための方法論を確立する.
主な方法:
- ステレオ化学を予測するために,計算方法と,既知の周期性デプシペプチドとの構造的比較が採用されました.
- 提案されたラキシジンA構造の全合成が達成され,トランスアシレーションによるステリックに阻害されたエステル結合の構築のための新しいアプローチが特徴付けられました.
- 合成製品から得られた分析データを,天然のラキシジンAと比較した.
主要な成果:
- ラキシジンAの絶対的構成は,2S,3S,14S,15S,16Rとして割り当てられました.
- 合成経路ではラキシジンAが得られ,分析データは天然の化合物と一致した.
- この研究は,他の複雑な周期性デプシペプチドにステレオ化学を割り当てるための枠組みを提供します.
結論:
- ラキシジンAの絶対的構成は,総合成と分析的比較によって決定的に確立されています.
- この研究は,抗がん幹細胞の応用における潜在的な治療薬としてのラキシジンAのさらなる調査を容易にする.
- 開発された合成戦略は,他の関連する天然製品の構造を明らかにするために適用できます.
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