立体電子効果は,ヘテロサイクルアミドの分子構成と生物学的機能を決定する
Robert C Reid1, Mei-Kwan Yau, Ranee Singh
1Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , Brisbane, QLD 4072, Australia.
Journal of the American Chemical Society
|August 8, 2014
まとめ
アミドに隣接するヘテロサイクルは,分子形状と生物学的活性に影響を与えます. ヘテロ原子 (例えば,窒素から硫黄) を変化させると,形状が変化し,重要な炎症受容体には反対の効果が生じます.
科学分野:
- 薬用化学 薬用化学について
- コンピューティング・ケミストリー
- 構造生物学 構造生物学とは
背景:
- アミドに隣接するヘテロサイクルは,ステレオ電子効果を通じて分子構成に大きく影響する.
- これらの効果を理解することは,薬剤の設計と生物学的活動の予測に不可欠です.
研究 の 目的:
- アミド構成に対するヘテロサイクルの立体電子的影響を調査する.
- Gタンパク質結合受容体の生物学的活動と構造の変化を相関させる.
主な方法:
- Ab initio MP2と密度関数理論 (DFT) による低エネルギー構造の計算.
- 充電分布と二極瞬間の分析.
- 既知の結晶構造と生物学的分析と比較した.
主要な成果:
- イミダゾールとシアゾールアミドのヘテロ原子 (NからS) を切り替えることで,分子構成と静電面が変化した.
- これらの形状の変化は,補完体C3a受容体のアゴニスト機能とアンタゴニスト機能の対極化をもたらした.
- バイサイクルリングによるコンフォームロックにより,ヘテロアトムの影響が確認されました.
結論:
- ヘテロサイクルのステレオ電子効果は,分子構成の重要な決定因子である.
- ヘテロアトムの選択によって引き起こされる微妙な形状の変化は,劇的に異なる生物学的結果につながる可能性があります.
- この原理は,Gタンパク質結合受容体の調節器の設計に不可欠です.
![Solid-phase Synthesis of [4.4] Spirocyclic Oximes](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F58508.jpg&w=3840&q=50)
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