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Chemistry of Nitroquinolones and Synthetic Application to Unnatural 1-Methyl-2-quinolone Derivatives
http://hdl.handle.net/10173/1359
http://hdl.handle.net/10173/1359bc45d9ef-cf8b-46c3-a747-4148380fbe90
| 名前 / ファイル | ライセンス | アクション |
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27-11.pdf (1.8 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||
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| 公開日 | 2016-03-25 | |||||||
| タイトル | ||||||||
| タイトル | Chemistry of Nitroquinolones and Synthetic Application to Unnatural 1-Methyl-2-quinolone 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 | |||||||
| 著者 |
Nishiwaki, Nagatoshi
× Nishiwaki, Nagatoshi
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The 1-methyl-2-quinolone (MeQone) framework is often found in alkaloids and recently attention was drawn to unnatural MeQone derivatives with the aim of finding new biologically active compounds, however, low reactivity of the MeQone framework prevents the syntheses of versatile derivatives. A nitro group is one of the useful activating groups for this framework that enables a concise chemical transformation. Among nitroquinolones, 1-methyl-3,6,8-trinitro-2-quinolone (TNQ) exhibits unusual reactivity favoring region-selective cine-substitutions that afford 4-substituted 1-methyl-6,8-dinitro-2-quinolones upon treatment with nucleophilic reagents. Contrary to this, 1-methyl-3,6-dinitro-2-quinolone (3,6-DNQ) does not undergo any reaction under the same conditions. The unusual reactivity of TNQ is caused by steric repulsion between the methyl group at the 1-position and the nitro group at the 8-position, which distorts the MeQone framework. As a result, the pyridone ring of TNQ loses aromaticity and acts rather as an activated nitroalkene. Indeed, the pyridone moiety of TNQ undergoes cycloaddition with electron-rich alkenes or dienes under mild conditions, whereby a new fused ring is constructed on the [c]-face of the MeQone. Consequently, TNQ can be used as a new scaffold leading to versatile unnatural MeQone derivatives. | |||||||
| 書誌情報 |
Molecules 巻 15, 号 8, p. 5174-5195, 発行日 2010 |
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| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 1420-3049 | |||||||
| DOI | ||||||||
| 関連タイプ | isIdenticalTo | |||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.3390/molecules15085174 | |||||||
| 権利 | ||||||||
| 権利情報 | This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | |||||||
| 権利（URI） | ||||||||
| 権利情報 | http://creativecommons.org/licenses/by/3.0/ | http://creativecommons.org/licenses/by/3.0/ | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 出版者 | ||||||||
| 出版者 | MDPIAG | |||||||
