1
|
Wang S, Wu Z, Li J, Zhu Y, Zheng S, Jiang C, Lu H. Electrochemical decarboxylative alkylation of β-ketoacids with phenol derivatives. Chem Commun (Camb) 2024; 60:1329-1332. [PMID: 38197300 DOI: 10.1039/d3cc05489f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
An electrochemical method for the decarboxylative alkylation of β-ketoacids with phenol derivatives has been developed. The protocol was carried out in readily available unseparated cells at room temperature in the absence of catalysts and oxidants. The corresponding aryl ketones were obtained in satisfactory yields without additional electrolytes, and were easy to produce in gram-scale synthesis. Based on control experiments and cyclic voltammetry, a plausible reaction mechanism was proposed.
Collapse
Affiliation(s)
- Shan Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Zhaotian Wu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Junqiang Li
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Yujun Zhu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Chunhui Jiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Hongfei Lu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| |
Collapse
|
2
|
Nikitjuka A, Ozola M, Jackevica L, Bobrovs R, Žalubovskis R. Exploration of 3,4-unsubstituted coumarins as thioredoxin reductase 1 inhibitors for cancer therapy. Org Biomol Chem 2023; 21:9630-9639. [PMID: 38018884 DOI: 10.1039/d3ob01522j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Coumarin and its derivatives have emerged as promising candidates in drug discovery. While the activity of coumarins as anticancer agents with different biological targets has been thoroughly investigated, reports on the potential of coumarins in the inhibition of thioredoxin reductase (TrxR) are still scarce. We focus on the design and synthesis of 3,4-unsubstituted coumarin analogues with systematic incorporation of substituents at the fifth to eighth positions of coumarin, which allowed definitive structure-activity relationship analysis to be conducted. In the obtained library, the substitution at the sixth position of the coumarin core with an aromatic or a cyclopropyl group turned out to be more activity enhancing. A bulky aromatic substituent with a large CF3 group encourages ligand alignment in a manner that enables covalent bond formation with the catalytic TrxR1 residue, according to the docking results. Our observations indicate that the activity of a series of coumarin analogues towards thioredoxin reductase 1 (TrxR1) is dependent on the nature (size and electronic effect) and the position of the substituent and more importantly - the accessibility of the Michael acceptor functionality. Several compounds (with at least 90% inhibition of the rat TrxR1 enzyme at 200 μM concentration) were further examined in in vitro cell-based assays to assess the cytotoxic effects on various cancer cell lines. The analogue 6-(4-(trifluoromethyl)phenyl)-2H-chromen-2-one was selected as the lead compound for further optimization. The results presented herein pave the way for the development of the next generation of coumarin-based TrxR1 inhibitors, where modification of the Michael acceptor moiety and incorporation of different aryl substituents at the sixth position of the coumarin core are planned.
Collapse
Affiliation(s)
- A Nikitjuka
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia.
| | - M Ozola
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia.
| | - L Jackevica
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia.
| | - R Bobrovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia.
| | - R Žalubovskis
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia.
- Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena iela 3, LV-1048 Riga, Latvia.
| |
Collapse
|
3
|
Yoshida Y, Kasuya R, Mino T, Sakamoto M. Phase-transfer catalysed asymmetric synthesis of α-chiral tetrasubstituted α-aminothioesters. Org Biomol Chem 2021; 19:6402-6406. [PMID: 34100506 DOI: 10.1039/d1ob00829c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral amino thioesters are important scaffolds owing to their widespread use in organic synthesis and biosynthesis. Despite their usefulness, their asymmetric synthesis, especially the catalytic asymmetric synthesis of α-chiral tetrasubstituted α-aminothioesters, is limited, with only one example reported so far. Herein, we report the first phase-transfer catalysed asymmetric synthesis of α-chiral tetrasubstituted α-aminothioesters to afford the corresponding products in up to 81% ee.
Collapse
Affiliation(s)
- Yasushi Yoshida
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| | - Reina Kasuya
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| | - Takashi Mino
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| | - Masami Sakamoto
- Molecular Chirality Research Center, Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan.
| |
Collapse
|
4
|
Hyodo K, Nakamura S. Catalytic enantioselective decarboxylative nucleophilic addition reactions using chiral organocatalysts. Org Biomol Chem 2020; 18:2781-2792. [PMID: 32222743 DOI: 10.1039/d0ob00127a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic decarboxylative reactions are attractive as biomimetic and environmentally friendly reaction processes. This review summarizes the recent results of organocatalytic enantioselective decarboxylative reactions of malonic acid half oxy- or thioesters, β-ketoacids, and related compounds from October 2013 to December 2019.
Collapse
Affiliation(s)
- Kengo Hyodo
- Department of Chemistry, School of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Shuichi Nakamura
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.
| |
Collapse
|
5
|
Li WK, Ren P, Zhou YW, Feng JT, Ma ZQ. Europium(III) functionalized 3D covalent organic framework for quinones adsorption and sensing investigation. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:121740. [PMID: 31796351 DOI: 10.1016/j.jhazmat.2019.121740] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/21/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
Chemical functionalization is essential for tuning the physical-chemical characters and broadening the potential applications of covalent organic frameworks (COFs). Based on the multistep postsynthetic modification strategy, Eu (III)-functionalized 3D COF (Eu-3D-COF) was prepared by grafting of Eu (III) onto the carboxyl-funtionalized 3D-COF (COOH-3D-COF). With micropores dominated microspheres structure, Eu-3D-COF exhibited superior adsorption affinity to multi-rings contained quinones based on the π-π interaction, coordination and hydrogen-bonding interactions, especially to 9,10-phenanthrenequinone (PQ) whose adjacent carbonyl oxygens resulting preferable synergistic chelation interaction with Eu(III) was responsible for the maximum adsorption capacity, which was confirmed by instrumental characterizations. The adsorptivity of Eu-3D-COF was apparently improved in comparison with COOH-3D-COF. More importantly, grafting of Eu(III) turned on the fluorescence of the COF, making Eu-3D-COF also a superior chemosensor for sensing application. Its fluorescent can be selectively quenched by quinones, especially by PQ based on the PQ-Eu and PQ-COF interactions co-dominated energy transfer. Therefore, both as an adsorbent and a chemosensor, the multi-functional COF was explored for quinones adsorption and sensing detection investigation in detail. Eu-3D-COF has promising application potentials for hazardous quinones adsorption and sensing detection, which also opens new perspectives for inorganic-organic 3D-COF construction and multi-functional applications.
Collapse
Affiliation(s)
- Wen-Kui Li
- Engineering and Research Center of Biological Pesticides of Shaanxi Province; College of Plant Protection, Northwest A & F University, Yangling, 712100, PR China.
| | - Peng Ren
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, PR China
| | - Yi-Wan Zhou
- Engineering and Research Center of Biological Pesticides of Shaanxi Province; College of Plant Protection, Northwest A & F University, Yangling, 712100, PR China
| | - Jun-Tao Feng
- Engineering and Research Center of Biological Pesticides of Shaanxi Province; College of Plant Protection, Northwest A & F University, Yangling, 712100, PR China
| | - Zhi-Qing Ma
- Engineering and Research Center of Biological Pesticides of Shaanxi Province; College of Plant Protection, Northwest A & F University, Yangling, 712100, PR China.
| |
Collapse
|
6
|
Jiang C, Chen Y, Huang G, Ni C, Liu X, Lu H. Scandium(III)-Catalysed Decarboxylative Addition of β-
Ketoacids to para
-Quinone Methides: Evidence for 1,6-Addition and Base-Assisted Decarboxylation Tandem Process. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800729] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chunhui Jiang
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Yayun Chen
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Gaokui Huang
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Cheng Ni
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Xiaoqian Liu
- School of pharmaceutical and life science; Changzhou University
| | - Hongfei Lu
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| |
Collapse
|
7
|
Abstract
On the basis of the cyclization reactions reported by Danishefsky et al. of Meldrum's acid hydroxylethyl and anilinoethyl derivatives, the cyclization of the sulfamidomethylene and ureidomethylene derivatives was attempted without success. To understand the lack of reactivity of these compounds versus the successful cyclization of the ethyl derivatives, the corresponding mechanisms of reaction for both processes have been explored by means of MP2/6-311+G(d,p) calculations in an aqueous environment. The conformational analysis of all of these structures revealed that, while for the ethyl derivatives the minimum energy conformation corresponds to that of the cyclization initiating structure, for the methylene analogues the entrance channel conformations are substantially less stable than the energy minimum. Intramolecular hydrogen bonds were found in all of the energy minima as well as in the cyclization initiating conformations as determined by analysis of their electron density. The potential energy surfaces for the successful and unsuccessful cyclization processes were obtained at room temperature and 100 °C. Comparison of both processes allows rationalization that the lack of reactivity of the methylene derivatives can be thermodynamically explained based not only on the strength of the intramolecular hydrogen bond formed in their energy minima but also by the energy penalty needed to reach the entrance channel conformation and by the calculated energy barriers.
Collapse
Affiliation(s)
- Cristina Trujillo
- School of Chemistry, Trinity Biomedical Sciences Institute , Trinity College Dublin , 152-160 Pearse Street , Dublin 2 , Ireland
| | - Pilar Goya
- Instituto de Química Médica, CSIC , Juan de la Cierva, 3 , E-28006 Madrid , Spain
| | - Isabel Rozas
- School of Chemistry, Trinity Biomedical Sciences Institute , Trinity College Dublin , 152-160 Pearse Street , Dublin 2 , Ireland
| |
Collapse
|
8
|
Melnykov SV, Pataman AS, Dmytriv YV, Shishkina SV, Vovk MV, Sukach VA. Regioselective decarboxylative addition of malonic acid and its mono(thio)esters to 4-trifluoromethylpyrimidin-2(1 H)-ones. Beilstein J Org Chem 2017; 13:2617-2625. [PMID: 29259672 PMCID: PMC5727768 DOI: 10.3762/bjoc.13.259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/20/2017] [Indexed: 01/07/2023] Open
Abstract
Background: Due to the high reactivity towards various C-nucleophiles, trifluoromethylketimines are known to be useful reagents for the synthesis of α-trifluoromethylated amine derivatives. However, decarboxylative reactions with malonic acid and its mono(thio)esters have been poorly investigated so far despite the potential to become a convenient route to β-trifluoromethyl-β-amino acid derivatives and to their partially saturated heterocyclic analogues. Results: In this paper we show that 4-trifluoromethylpyrimidin-2(1H)-ones, unique heterocyclic ketimines, react with malonic acid under organic base catalysis to regioselectively provide either Michael- or Mannich-type decarboxylative addition products depending on solvent polarity. Malonic mono(thio)esters give exclusively Michael-type products. The two regioisomeric products can be converted into saturated (2-oxohexahydropyrimidin-4-yl)acetic acid derivatives by mild hydrogenation of the endocyclic C=C double bond in the presence of Pd/C as catalyst. The cis-stereoisomers selectively formed upon reduction of the Michael-type products were structurally determined by X-ray diffraction. As a result of this study, a number of novel acetic acid derivatives containing trifluoromethylated, partially or fully saturated 2-oxopyrimidine cores were prepared and characterized as promising building blocks. Conclusions: Regio- and stereoselective protocols have been developed for the synthesis of novel isomeric 4(6)-trifluoromethylated 1,2,3,4-tetrahydro- and perhydro-(2-oxopyrimidin-4-yl)acetic acid derivatives.
Collapse
Affiliation(s)
- Sergii V Melnykov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska str., Kyiv 02660, Ukraine
| | | | - Yurii V Dmytriv
- Enamine LTD, 78 Chervonotkats'ka str., Kyiv 02094, Ukraine.,National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", 37 Peremohy ave., Kyiv 03056, Ukraine
| | - Svitlana V Shishkina
- STC ''Institute for Single Crystals'', National Academy of Sciences of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine.,Department of Inorganic Chemisrtry, V.M. Karasin Kharkiv National University, 4 Svobody sq, Kharkiv 61122, Ukraine
| | - Mykhailo V Vovk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska str., Kyiv 02660, Ukraine
| | - Volodymyr A Sukach
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska str., Kyiv 02660, Ukraine
| |
Collapse
|
9
|
Abstract
This report focuses on the remote control of anion-π catalysis by electric fields. We have synthesized and immobilized anion-π catalysts to explore the addition reaction of malonic acid half thioesters to enolate acceptors on conductive indium tin oxide surfaces. Exposed to increasing electric fields, anion-π catalysts show an increase in activity and an inversion of selectivity. These changes originate from a more than 100-fold rate enhancement of the disfavored enolate addition reaction that coincides with an increase in selectivity of transition-state recognition by up to -14.8 kJ mol-1. The addition of nitrate with strong π affinity nullified (IC50 = 2.2 mM) the responsiveness of anion-π catalysts to electric fields. These results support that the polarization of the π-acidic naphthalenediimide surface in anion-π catalysts with electric fields increases the recognition of anionic intermediates and transition states on this polarized π surface, that is, the existence and relevance of electric-field-assisted anion-π catalysis.
Collapse
Affiliation(s)
- Masaaki Akamatsu
- Department of Organic Chemistry, University of Geneva , 1211 Geneva, Switzerland
| | - Naomi Sakai
- Department of Organic Chemistry, University of Geneva , 1211 Geneva, Switzerland
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva , 1211 Geneva, Switzerland
| |
Collapse
|