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Trometer N, Cichocki B, Chevalier Q, Pécourneau J, Strub JM, Hemmerlin A, Specht A, Davioud-Charvet E, Elhabiri M. Synthesis and Photochemical Properties of Fluorescent Metabolites Generated from Fluorinated Benzoylmenadiones in Living Cells. J Org Chem 2024; 89:2104-2126. [PMID: 37267444 DOI: 10.1021/acs.joc.3c00620] [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: 06/04/2023]
Abstract
This work describes the reactivity and properties of fluorinated derivatives (F-PD and F-PDO) of plasmodione (PD) and its metabolite, the plasmodione oxide (PDO). Introduction of a fluorine atom on the 2-methyl group markedly alters the redox properties of the 1,4-naphthoquinone electrophore, making the compound highly oxidizing and particularly photoreactive. A fruitful set of analytical methods (electrochemistry, absorption and emission spectrophotometry, and HRMS-ESI) have been used to highlight the products resulting from UV photoirradiation in the absence or presence of selected nucleophiles. With F-PDO and in the absence of nucleophile, photoreduction generates a highly reactive ortho-quinone methide (o-QM) capable of leading to the formation of a homodimer. In the presence of thiol nucleophiles such as β-mercaptoethanol, which was used as a model, o-QMs are continuously regenerated in sequential photoredox reactions generating mono- or disulfanylation products as well as various unreported sulfanyl products. Besides, these photoreduced adducts derived from F-PDO are characterized by a bright yellowish emission due to an excited-state intramolecular proton transfer (ESIPT) process between the dihydronapthoquinone and benzoyl units. In order to evidence the possibility of an intramolecular coupling of the o-QM intermediate, a synthetic route to the corresponding anthrones is described. Tautomerization of the targeted anthrones occurs and affords highly fluorescent stable hydroxyl-anthraquinones. Although probable to explain the intense visible fluorescence emission also observed in tobacco BY-2 cells used as a cellular model, these coupling products have never been observed during the photochemical reactions performed in this study. Our data suggest that the observed ESIPT-induced fluorescence most likely corresponds to the generation of alkylated products through reduction species, as demonstrated with the β-mercaptoethanol model. In conclusion, F-PDO thus acts as a novel (pro)-fluorescent probe for monitoring redox processes and protein alkylation in living cells.
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Affiliation(s)
- Nathan Trometer
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Bogdan Cichocki
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Quentin Chevalier
- Institut De Biologie Moléculaire Des Plantes, Unité Propre de Recherche 2357, Centre National de la Recherche Scientifique-Université de Strasbourg, Strasbourg F-67084, France
| | - Jérémy Pécourneau
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Jean-Marc Strub
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO), UMR7178 Université de Strasbourg-CNRS, IPHC, 25 Rue Becquerel, 67087 Strasbourg, France
| | - Andréa Hemmerlin
- Institut De Biologie Moléculaire Des Plantes, Unité Propre de Recherche 2357, Centre National de la Recherche Scientifique-Université de Strasbourg, Strasbourg F-67084, France
| | - Alexandre Specht
- Conception et Applications des Molécules Bioactives, Faculté de Pharmacie, UMR 7199 CNRS-Université de Strasbourg, 74 Route du Rhin, Illkirch 67401, France
| | - Elisabeth Davioud-Charvet
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Mourad Elhabiri
- Team Bio(IN)organic and Medicinal Chemistry, Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR7042 Université de Strasbourg-CNRS-UHA, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
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Yao L, Huang X, Lin T, Qiu SX. Three new anti-inflammatory stilbenoids and a diphenyl ether derivative from Cajanus cajan. Nat Prod Res 2024:1-8. [PMID: 38164765 DOI: 10.1080/14786419.2023.2297862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024]
Abstract
Three new stilbenoids, namely two rare plant-derived phenanthrenes denominated Cajananthrenes A and B (1, 2) and one bibenzyl named Cajanbenzyl (3), together with a diphenyl ether derivative designated Cajanether (4), as well as five other known compounds (5-9) were isolated from the ethanolic extract of the leaves of Cajanus cajan. Their structures were determined through extensive spectroscopic analysis including UV, IR, NMR (1D and 2D) and HRESIMS as well. A plausible biogenesis pathway was proposed for the biosynthesis of compounds 1-3. Compounds 1 and 2 displayed moderate anti-inflammatory activity as evident from the inhibitory effect on NO production in LPS-stimulated RAW 264.7 macrophages with IC50 values of 73.6 and 44.6 μM respectively.
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Affiliation(s)
- Liyuan Yao
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- South China National Botanical Garden, Guangzhou, P. R. China
- University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xiaobao Huang
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Chemistry Department, University of Wisconsin Madison, Madison, Wisconsin, USA
| | - Tingting Lin
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Sheng-Xiang Qiu
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- South China National Botanical Garden, Guangzhou, P. R. China
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Lavarda G, Bhattacharjee N, Brancato G, Torres T, Bottari G. Enabling Racemization of Axially Chiral Subphthalocyanine‐Tetracyanobutadiene‐Aniline Enantiomers by Triplet State Photogeneration. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Giulia Lavarda
- Departamento de Química Orgánica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain
| | - Nicholus Bhattacharjee
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
- Istituto Nazionale di Fisica Nucleare Largo Pontecorvo 3 56100 Pisa Italy
| | - Giuseppe Brancato
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
- Istituto Nazionale di Fisica Nucleare Largo Pontecorvo 3 56100 Pisa Italy
| | - Tomás Torres
- Departamento de Química Orgánica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain
- IMDEA-Nanociencia c/Faraday 9, Campus de Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Giovanni Bottari
- Departamento de Química Orgánica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain
- IMDEA-Nanociencia c/Faraday 9, Campus de Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
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4
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Lavarda G, Bhattacharjee N, Brancato G, Torres T, Bottari G. Enabling Racemization of Axially Chiral Subphthalocyanine‐Tetracyanobutadiene‐Aniline Enantiomers by Triplet State Photogeneration. Angew Chem Int Ed Engl 2020; 59:21224-21229. [DOI: 10.1002/anie.202010133] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Giulia Lavarda
- Departamento de Química Orgánica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain
| | - Nicholus Bhattacharjee
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
- Istituto Nazionale di Fisica Nucleare Largo Pontecorvo 3 56100 Pisa Italy
| | - Giuseppe Brancato
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
- Istituto Nazionale di Fisica Nucleare Largo Pontecorvo 3 56100 Pisa Italy
| | - Tomás Torres
- Departamento de Química Orgánica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain
- IMDEA-Nanociencia c/Faraday 9, Campus de Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Giovanni Bottari
- Departamento de Química Orgánica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain
- IMDEA-Nanociencia c/Faraday 9, Campus de Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
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Belletti G, Tortora C, Mellema ID, Tinnemans P, Meekes H, Rutjes FPJT, Tsogoeva SB, Vlieg E. Photoracemization-Based Viedma Ripening of a BINOL Derivative. Chemistry 2020; 26:839-844. [PMID: 31663650 PMCID: PMC7004087 DOI: 10.1002/chem.201904382] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/23/2019] [Indexed: 11/28/2022]
Abstract
Viedma ripening is a deracemization process that has been used to deracemize a range of chiral molecules. The method has two major requirements: the compound needs to crystallize as a conglomerate and it needs to be racemizable under the crystallization conditions. Although conglomerate formation can be induced in different ways, the number of racemization methods is still rather limited. To extend the scope of Viedma ripening, in the present research we applied UV-light-induced racemization in a Viedma ripening process, and report the successful deracemization of a BINOL derivative crystallizing as a conglomerate. Irradiation by UV light activates the target compound in combination with an organic base, required to promote the excited-state proton transfer (ESPT), leading thereafter to racemization. This offers a new tool towards the development of Viedma ripening processes, by using a cheap and "green" catalytic source like UV light to racemize suitable chiral compounds.
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Affiliation(s)
- Giuseppe Belletti
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJNijmegenThe Netherlands
| | - Carola Tortora
- Chair of Organic Chemistry IDepartment of Chemistry and PharmacyFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Indradevi D. Mellema
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJNijmegenThe Netherlands
| | - Paul Tinnemans
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJNijmegenThe Netherlands
| | - Hugo Meekes
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJNijmegenThe Netherlands
| | - Floris P. J. T. Rutjes
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJNijmegenThe Netherlands
| | - Svetlana B. Tsogoeva
- Chair of Organic Chemistry IDepartment of Chemistry and PharmacyFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Elias Vlieg
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJNijmegenThe Netherlands
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Qi C, Wang W, Reichl KD, McNeely J, Porco JA. Total Synthesis of Aurofusarin: Studies on the Atropisomeric Stability of Bis-Naphthoquinones. Angew Chem Int Ed Engl 2018; 57:2101-2104. [PMID: 29318760 PMCID: PMC5890919 DOI: 10.1002/anie.201711535] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/21/2017] [Indexed: 12/19/2022]
Abstract
An efficient annulation involving pyrone addition to a quinone and Dieckmann condensation was developed for rapid assembly of a γ-naphthopyrone monomeric precursor to the bis-naphthoquinone natural product aurofusarin. Dimerization was achieved through PdII -catalyzed dehydrogenative coupling. Further studies employing asymmetric nucleophilic epoxidation indicate that the atropisomers of aurofusarin and derivatives are not configurationally stable at ambient temperature.
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Affiliation(s)
| | | | - Kyle D. Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) Boston University, Boston, MA 02215 (USA)
| | - James McNeely
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) Boston University, Boston, MA 02215 (USA)
| | - John A. Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) Boston University, Boston, MA 02215 (USA)
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7
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Qi C, Wang W, Reichl KD, McNeely J, Porco JA. Total Synthesis of Aurofusarin: Studies on the Atropisomeric Stability of Bis-Naphthoquinones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Qi
- Department of Chemistry and Center for Molecular Discovery (BU-CMD); Boston University; Boston MA 02215 USA
| | - Wenyu Wang
- Department of Chemistry and Center for Molecular Discovery (BU-CMD); Boston University; Boston MA 02215 USA
| | - Kyle D. Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD); Boston University; Boston MA 02215 USA
| | - James McNeely
- Department of Chemistry and Center for Molecular Discovery (BU-CMD); Boston University; Boston MA 02215 USA
| | - John A. Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD); Boston University; Boston MA 02215 USA
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