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関連する概念動画

Phase II Reactions: Methylation Reactions01:17

Phase II Reactions: Methylation Reactions

402
Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
402
Oxidation of Alcohols02:37

Oxidation of Alcohols

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In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
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Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

11.0K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
11.0K
Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids02:04

Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids

6.2K
Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
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Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate02:21

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

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Alkenes can be dihydroxylated using potassium permanganate.  The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
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Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems01:15

Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems

185
Oxidative reactions are pivotal in metabolizing numerous compounds, including pharmaceutical drugs. These reactions often occur in carbon-heteroatom systems, such as carbon-nitrogen, carbon-sulfur, and carbon-oxygen.
In carbon-nitrogen systems, aliphatic and aromatic amines can undergo oxidative reactions. Secondary and tertiary amines, like those found in tricyclic antidepressants, can undergo N-dealkylation, a process that involves the oxidation of the alkyl group. In addition, oxidative...
185

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関連する実験動画

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Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS
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複雑な分子の末期メチル化のための電気化学C ((sp3) -H酸化の探索

Luiz F T Novaes1, Justin S K Ho1, Kaining Mao1

  • 1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States.

Journal of the American Chemical Society
|January 11, 2022
PubMed
まとめ

薬剤化学者は新しい電気化学的方法を使って 複雑な薬の分子にメチル群を 選択的に加えることができます この"マジックメチル"戦略は 合成を簡素化し 薬の発見を加速します

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Improved In-gel Reductive &#946;-Elimination for Comprehensive O-linked and Sulfo-glycomics by Mass Spectrometry
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科学分野:

  • 有機化学
  • 薬剤化学
  • 電気化学

背景:

  • "マジックメチル"効果は,メチル群の組み込みによって薬の効力を高めます.
  • 複雑な薬剤の選択的C ((sp3) -Hメチル化が難しい.
  • 現在の方法は,メチル化化合物の多段階の合成を必要とする.

研究 の 目的:

  • 保護されたアミンのα-メチル化のためのモジュラーで効率的で選択的な戦略を開発する.
  • 複雑な薬物標的の機能化を可能にする.
  • 多段階の de novo 合成の代替手段を提供するためです

主な方法:

  • 保護されたアミン (アミド,カルバメート,スルフォナミド) の電気化学的酸化.
  • ショノ酸化反応に基づいて改良されたプロトコルの開発.
  • オーガノシン媒介によるC-C結合形成による統合

主要な成果:

  • 幅広い反応範囲と高機能群の互換性が達成された.
  • 複雑なターゲットの機能化に適していることが示されています.
  • "マジックメチル"効果に関連するものを含め,様々なアミン誘導体の直接メチル化が可能である.

結論:

  • 開発された電気化学戦略は,メチル化アミン誘導体への簡素化および効率的な経路を提供します.
  • この方法は長い合成経路を回避することで 薬の発見を加速します
  • このプロトコルは薬用化学の応用に 大きな可能性を秘めている.