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関連する概念動画

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

3.1K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
3.1K
Phosphorylation01:02

Phosphorylation

54.7K
The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
54.7K
ATP Synthase: Mechanism01:48

ATP Synthase: Mechanism

17.7K
In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased...
17.7K
ATP Energy Storage and Release01:31

ATP Energy Storage and Release

14.8K
ATP is a highly unstable molecule. Unless quickly used to perform work, ATP spontaneously dissociates into ADP and inorganic phosphate (Pi), and the free energy released during this process is lost as heat. The energy released by ATP hydrolysis is used to perform work inside the cell and depends on a strategy called energy coupling. Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed.
One example of energy coupling using ATP involves a...
14.8K
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

15.3K
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
15.3K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.3K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
2.3K

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Updated: Feb 24, 2026

Chemical Triphosphorylation of Oligonucleotides
13:19

Chemical Triphosphorylation of Oligonucleotides

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4.2K

ホスホリル化ピリドフェナントリジン誘導体への電気化学的誘起逐次リン酸化/環化アクセス

Ya'nan Ran1, Miao Yu1, Shengyu Cui1

  • 1College of Pharmacy, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China.

ACS omega
|February 23, 2026
PubMed
まとめ
この要約は機械生成です。

新規の電気化学的方法は、カスケード反応を用いてホスホリル化ピリド-[4,3,2-gh]-フェナントリジン誘導体を合成する。この効率的なプロセスは最大91%の収率を達成し、抗がん活性の可能性を示す。

キーワード:
電気化学的合成リン酸化ピリドフェナントリジンカスケード反応抗がん活性

さらに関連する動画

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
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Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay

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Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
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Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach

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関連する実験動画

Last Updated: Feb 24, 2026

Chemical Triphosphorylation of Oligonucleotides
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Chemical Triphosphorylation of Oligonucleotides

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Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
12:26

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay

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19.4K
Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
14:11

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach

Published on: June 10, 2021

6.8K

科学分野:

  • 有機化学
  • 電気化学
  • 医薬化学

背景:

  • ピリド-[4,3,2-gh]-フェナントリジン誘導体は重要な複素環式化合物である。
  • 複雑な有機分子の効率的な合成は、創薬において極めて重要である。
  • 電気化学的方法は、持続可能で制御された反応経路を提供する。

研究 の 目的:

  • ホスホリル化ピリド-[4,3,2-gh]-フェナントリジン誘導体の新規電気化学的合成法を開発すること。
  • カスケードリン酸化/環化反応機構を調査すること。
  • 合成された化合物の予備的な抗がん活性を評価すること。

主な方法:

  • 合成のためにCp2Feを支援とした電気化学サイクルを利用した。
  • ホスホニルラジカル付加およびシアン化物挿入を伴うカスケード反応を用いた。
  • がん細胞株に対する予備的なinvitroスクリーニングを実施した。

主要な成果:

  • 収率最大91%で、ホスホリル化ピリド-[4,3,2-gh]-フェナントリジン誘導体の合成を達成した。
  • 穏やかな反応条件と広範な官能基許容性を示した。
  • 選択されたがん細胞株に対して有望な阻害効果を持つ化合物を同定した。

結論:

  • ホスホリル化ピリド-[4,3,2-gh]-フェナントリジン誘導体を合成するための、新規かつ効率的な電気化学的方法が確立された。
  • 開発された方法は穏やかで、様々な官能基に対して許容性があり、高収率である。
  • 合成された化合物は抗がん剤としての可能性を示しており、さらなる調査が保証される。