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Updated: Aug 10, 2026

Analytical Techniques for Assaying Nitric Oxide Bioactivity
11:28

Analytical Techniques for Assaying Nitric Oxide Bioactivity

Published on: June 18, 2012

酸化窒素による毛皮抑制に起因する2つのニトロシル-鉄複合体の光譜学的記述

Benoît D'Autréaux1, Olivier Horner, Jean-Louis Oddou

  • 1Laboratoire de Physicochimie des Métaux en Biologie, UMR CNRS-CEA-UJF 5155, CEA-Grenoble, 38054 Grenoble Cedex 9, France.

Journal of the American Chemical Society
|May 13, 2004
PubMed
まとめ

鉄吸収調節タンパク質 (Fur) は,酸化窒素 (NO) を結合して鉄-ニトロシル複合体を形成し,DNA結合を阻害する. この研究は,これらの種を特徴づけ,細菌のNOストレス反応と鉄代謝におけるその役割を明らかにします.

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Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
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2° Amines to N-Nitrosamines: Reaction with NaNO2

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
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Nitrosation of Enols

The nitrosation reaction is one of the methods of preparing 1,2-diketones. The enol tautomer of the starting ketone reacts with sodium nitrite in hydrochloric acid, generating the 1,2-diketone after hydrolysis.