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Updated: Jul 14, 2026

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Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
タモキシフェン型テトラ置換オレフィンの多様性指向合成
Kenichiro Itami1, Toshiyuki Kamei, Jun-ichi Yoshida
1Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
Journal of the American Chemical Society
|December 4, 2003
まとめ
新しい銅触媒法により,タモキシフェン型テトラ置換オレフィンの合成が可能になりました. このアプローチは,ステレオ化学を正確に制御し,抗エストロゲン活性に不可欠な多様なアリル基の導入を可能にします.
科学分野:
- 有機化学 オーガニック・ケミストリー
- 薬用化学 薬用化学について
背景:
- タモキシフェンは,エストロゲン受容体陽性乳がんの治療に不可欠な薬です.
- 調節可能な特性を有するタモキシフェンアナログの効率的な合成経路の開発は,薬物の発見に不可欠です.
研究 の 目的:
- タモキシフェン型テトラ置換オレフィンのための新しく汎用的な合成戦略を開発する.
- アリル置換物の容易な変化と,構造-活性関係研究のためのステレオ化学の制御を可能にするために.
主な方法:
- アルキニル ((2-ピリジル)) シランの銅触媒カルボマグネゼーション.
- アリルイオジドを順次添加して,多様な置換剤を導入する.
- テトラ置換オレフィンの地域およびステレオ選択的合成.
主要な成果:
- タモキシフェン型テトラ置換オレフィンの一般的な合成スキームが確立されました.
- この方法により,電子的,構造的に多様なオレフィンの幅広い種類を製造することができます.
- 抗エストロゲン活性に重要な主要なアリル基は,容易に入手可能なアリルイオジドから容易に変化させることができます.
- ステレオおよびレジオアイソマーは,アリルヨウ酸化物添加の順番を変更することによってアクセスできます.
結論:
- 開発されたCu-catalyzed carbomagnesationは,タモキシフェンの類似物を合成するための強力で柔軟なアプローチを提供します.
- この方法は,多様性指向の合成と,薬理学的評価のための特定の同位体の準備を容易にする.
- 合成戦略は,新しい抗エストロゲン化合物の発見に有望である.
関連する概念動画
Coordination Number and Geometry
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Structural Isomerism
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Stereoisomerism
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Valence Bond Theory
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
¹H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons
Protons in identical electronic environments within a molecule are chemically equivalent and have the same chemical shift. The replacement test is a useful tool to identify chemical equivalence and predict NMR spectra. A substituent replaces each of the protons being examined and the resulting molecules are compared. If the same molecule is obtained, the protons are equivalent or homotopic. Replacement of any hydrogens in ethane by chlorine yields chloroethane because all six protons are...
Types Of Transformers
Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...

