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Aluminium Ion-Promoted Radical-Scavenging Reaction of Methylated Hydroquinone Derivatives
https://repo.qst.go.jp/records/48436
https://repo.qst.go.jp/records/484365f9d0cb5-61c4-4110-9a95-bf8633dac291
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-01-12 | |||||
| タイトル | ||||||
| タイトル | Aluminium Ion-Promoted Radical-Scavenging Reaction of Methylated Hydroquinone Derivatives | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Nakanishi, Ikuo
× Nakanishi, Ikuo× Ohkubo, Kei× Ogawa, Yukihiro× Matsumoto, Kenichiro× Ozawa, Toshihiko× Fukuzumi, Shunichi× 中西 郁夫× 大久保 敬× 小川 幸大× 松本 謙一郎× 小澤 俊彦 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The effect of aluminium ion (Al3+) on the scavenging reaction of a 2,2-diphenyl-1-picrylhydrazyl radical (DPPH●), as a reactivity model of reactive oxygen species, by hydroquinone (QH2) and its methylated derivatives (MenQH2, n = 1–4) was investigated using stopped-flow and electrochemical techniques in a hydroalcoholic medium. The second-order rate constants (k) for the DPPH●-scavenging reaction of the hydroquinones increased with increasing the number of methyl substituents. Upon addition of Al3+, the k values significantly increased depending on the concentration of Al3+. Such an accelerating effect of Al3+ on the DPPH●-scavenging rates of the hydroquinones results from the remarkable positive shift of the one-electron reduction potential (Ered) of DPPH● in the presence Al3+. These results demonstrate that Al3+, a strong Lewis acid, can act as a radical-scavenging promoter by stabilising the one-electron reduced species of the radical, although Al3+ is reported not only to act as a pro-oxidant but also to strongly interact with biomolecules, showing toxicities. | |||||
| 書誌情報 |
Organic & Biomolecular Chemistry 巻 14, 号 33, p. 7956-7961, 発行日 2016-07 |
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| 出版者 | ||||||
| 出版者 | The Royal Society of Chemistry | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1477-0520 | |||||
| PubMed番号 | ||||||
| 識別子タイプ | PMID | |||||
| 関連識別子 | 27492849 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1039/C6OB01470D | |||||
