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Yoshii T, Tsuzuki S, Sakurai S, Sakamoto R, Jiang J, Hatanaka M, Matsumoto A, Maruoka K. N-Hydroxybenzimidazole as a structurally modifiable platform for N-oxyl radicals for direct C-H functionalization reactions. Chem Sci 2020; 11:5772-5778. [PMID: 32832053 PMCID: PMC7416693 DOI: 10.1039/d0sc02134b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/16/2020] [Indexed: 11/21/2022] Open
Abstract
A novel class of N-oxy radicals based on flexibly modifiable N-hydroxybenzimidazole skeleton was designed and applied to C–H functionalization reactions.
Methods for direct functionalization of C–H bonds mediated by N-oxyl radicals constitute a powerful tool in modern organic synthesis. While several N-oxyl radicals have been developed to date, the lack of structural diversity for these species has hampered further progress in this field. Here we designed a novel class of N-oxyl radicals based on N-hydroxybenzimidazole, and applied them to the direct C–H functionalization reactions. The flexibly modifiable features of these structures enabled facile tuning of their catalytic performance. Moreover, with these organoradicals, we have developed a metal-free approach for the synthesis of acyl fluorides via direct C–H fluorination of aldehydes under mild conditions.
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Affiliation(s)
- Tomomi Yoshii
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Saori Tsuzuki
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Shunya Sakurai
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Ryu Sakamoto
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Julong Jiang
- Institute for Research Initiatives , Division for Research Strategy , Graduate School of Materials Science , Data Science Center , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan
| | - Miho Hatanaka
- Institute for Research Initiatives , Division for Research Strategy , Graduate School of Materials Science , Data Science Center , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan.,PRESTO , Japan Science and Technology (JST) , 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan
| | - Akira Matsumoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo , Kyoto 606-8501 , Japan
| | - Keiji Maruoka
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan . .,Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo , Kyoto 606-8501 , Japan.,School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
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Identification of N-Hydroxycinnamamide analogues and their bio-evaluation against breast cancer cell lines. Biomed Pharmacother 2018; 107:475-483. [PMID: 30107343 DOI: 10.1016/j.biopha.2018.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/24/2018] [Accepted: 08/06/2018] [Indexed: 11/21/2022] Open
Abstract
The present study demonstrates the identification of N-hydroxycinnamamide derivatives and their anticancer potential against human triple-negative breast cancer cell line MDA-MB‑231, MCF-7 and non-malignant origin cell line, HEK-293 (human embryonic kidney). MTT assay was studied with HEK-293 cell line. Anticancer potential of the N-hydroxycinnamamide derivatives were compared with marked drug Tamoxifen through in vitro study. The compound numbers 3b and 3h exhibit most potent activity against antagonistic breast cancer cells (MDA-MB-231) with IC5013μM and 5μM respectively. Compound 3h promotes DNA fragmentation and induction of apoptosis. Furthermore, loss of mitochondrial membrane potential induced by compound 3h. The major mechanism of compound 3h for anti-breast cancer activity was probably initiation of reactive oxygen species (ROS) in cancer cells thereby persuading apoptotic cell deaths in cancer cells.
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Bajtai A, Fekete B, Palkó M, Fülöp F, Lindner W, Kohout M, Ilisz I, Péter A. Comparative study on the liquid chromatographic enantioseparation of cyclic β-amino acids and the related cyclic β-aminohydroxamic acids on Cinchona
alkaloid-based zwitterionic chiral stationary phases. J Sep Sci 2017; 41:1216-1223. [DOI: 10.1002/jssc.201701190] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/20/2017] [Accepted: 11/20/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Attila Bajtai
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
| | - Beáta Fekete
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Márta Palkó
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Wolfgang Lindner
- Department of Analytical Chemistry; University of Vienna; Vienna Austria
| | - Michal Kohout
- Department of Organic Chemistry; University of Chemistry and Technology Prague; Prague Czech Republic
| | - István Ilisz
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
| | - Antal Péter
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
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Methods of synthesis and physicochemical properties of 1-hydroxyimidazoles, imidazole 3-oxides, and their benzoannulated analogs. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2030-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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High-performance liquid chromatographic enantioseparation of cyclic β-aminohydroxamic acids on zwitterionic chiral stationary phases based on Cinchona alkaloids. Anal Chim Acta 2016; 921:84-94. [DOI: 10.1016/j.aca.2016.03.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 03/22/2016] [Accepted: 03/26/2016] [Indexed: 11/24/2022]
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Zhang L, Geng Y, Jin Z. Transition-Metal-Free Synthesis of N-Aryl Hydroxamic Acids via Insertion of Arynes. J Org Chem 2016; 81:3542-52. [DOI: 10.1021/acs.joc.6b00111] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lanlan Zhang
- State Key Laboratory of Elementoorganic
Chemistry, Nankai University, Tianjin 300071, China
| | - Yu Geng
- State Key Laboratory of Elementoorganic
Chemistry, Nankai University, Tianjin 300071, China
| | - Zhong Jin
- State Key Laboratory of Elementoorganic
Chemistry, Nankai University, Tianjin 300071, China
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