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関連する概念動画

Prodrugs01:30

Prodrugs

4.5K
Prodrugs are a class of pharmaceutical compounds that undergo a biotransformation process within the body to be converted into a pharmacologically active drug. Prodrugs are designed to improve the therapeutic properties of the parent drug, such as enhancing bioavailability, increasing stability, or reducing toxicity. The concept of prodrugs revolves around modifying the chemical structure of the original drug to make it more effective or convenient for administration.
Prodrugs help overcome...
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

4.0K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
4.0K
Prochirality02:05

Prochirality

5.2K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
5.2K
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

15
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
15
Drug Metabolism: Phase II Reactions01:14

Drug Metabolism: Phase II Reactions

5.4K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
5.4K
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry01:29

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry

6.3K
Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
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Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
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Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

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立体選択的に前薬を組み立てる多機能な触媒

Daniel A DiRocco1, Yining Ji2, Edward C Sherer2

  • 1Process Research and Development, Merck & Co., Inc., Rahway, NJ 07065, USA. daniel.dirocco@merck.com.

Science (New York, N.Y.)
|April 29, 2017
PubMed
まとめ
この要約は機械生成です。

研究者らは,抗ウイルスおよび抗癌療法に不可欠なキラル・フォスフォラミダートの立体選択合成のための新しい触媒方法を開発しました. この画期的な発見は 薬の開発におけるステレオ化学を 精密に制御することを可能にしました

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Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
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Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies
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関連する実験動画

Last Updated: Mar 3, 2026

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
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Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

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Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
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Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies
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科学分野:

  • 有機化学
  • 薬剤化学
  • カタリシス

背景:

  • 薬剤ではキラルリン化合物が不可欠ですが,その立体選択合成は困難です.
  • キラル・フォスフォラミダート合成の現在の方法は,しばしば非効率な解像度またはステキオメトリックキラル補助物質を含む.
  • 特にプロヌクレオチド (ProTide) 療法におけるフォスフォラミダート前薬は,ウイルス性疾患および癌の治療に不可欠である.

研究 の 目的:

  • リン-ステレオゲン酸を合成するための新しい触媒的ステレオ選択法を開発する.
  • クイラル・フォスフォラミダート分子を核酸に効率的かつ正確に設置できるようにする.

主な方法:

  • 合成にはダイナミックなステレオ選択プロセスが用いられました.
  • 触媒の設計にはメカニズム研究と計算モデルが用いられました.
  • 多機能触媒は合理的に設計され合成されました

主要な成果:

  • 開発された方法は,フォスフォラミダートの合成において高いステレオ選択性を達成する.
  • ステレオ選択性は99:1に達し,その方法の有効性を実証した.
  • 触媒的アプローチは,既存の解像度ベースのまたはステキオメトリックの補助方法よりも大幅に進歩しています.

結論:

  • フォスフォラミダート合成のための非常に効果的な触媒的ステレオ選択法が確立されています.
  • この方法は,薬剤化学にとって重要なキラル・フォスフォラミダートへのアクセスのための強力なツールを提供します.
  • この発見は,プロヌクレオチドベースの治療薬の合成の改善への道を開きます.