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Brégier F, Sol V, Champavier Y, Galmiche L, Allain C, Audebert P. First Example of a Heptazine-Porphyrin Dyad; Synthesis and Spectroscopic Properties. Molecules 2022; 27:molecules27196698. [PMID: 36235234 PMCID: PMC9571928 DOI: 10.3390/molecules27196698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/16/2022] [Accepted: 09/26/2022] [Indexed: 11/05/2022] Open
Abstract
We have prepared the first example of a porphyrin linked to an heptazine photoactive antenna. The two entities, linked with an alkyl spacer, demonstrate the activity of both active moieties. While they behave electrochemically independantly, on the other hand the spectroscopy shows the existence of energy transfer between both partners.
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Affiliation(s)
- Frédérique Brégier
- Laboratoire PEIRENE UR 22722, University of Limoges, 87000 Limoges, France
- Correspondence: (F.B.); (P.A.)
| | - Vincent Sol
- Laboratoire PEIRENE UR 22722, University of Limoges, 87000 Limoges, France
| | - Yves Champavier
- Laboratoire PEIRENE UR 22722, University of Limoges, 87000 Limoges, France
- BISCEm, NMR Platform, Centre de Biologie et de Recherche en Santé (CBRS), 87000 Limoges, France
| | - Laurent Galmiche
- PPSM, Av. Des Sciences, 91100 Gif s. Yvette, CNRS UMR 8531, 61, Avenue du Président Wilson, CEDEX, 94235 Cachan, France
| | - Clémence Allain
- PPSM, Av. Des Sciences, 91100 Gif s. Yvette, CNRS UMR 8531, 61, Avenue du Président Wilson, CEDEX, 94235 Cachan, France
| | - Pierre Audebert
- PPSM, Av. Des Sciences, 91100 Gif s. Yvette, CNRS UMR 8531, 61, Avenue du Président Wilson, CEDEX, 94235 Cachan, France
- XLIM, UMR CNRS 7252 123, Avenue Albert Thomas, CEDEX, 87060 Limoges, France
- Correspondence: (F.B.); (P.A.)
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Bouramtane S, Bretin L, Godard J, Pinon A, Champavier Y, Launay Y, Léger D, Liagre B, Sol V, Chaleix V, Brégier F. Design and synthesis of triphenylphosphonium-porphyrin@xylan nanoparticles for anticancer photodynamic therapy. CR CHIM 2021. [DOI: 10.5802/crchim.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gallardo-Villagrán M, Paulus L, Champavier Y, Leger DY, Therrien B, Liagre B. Combination of tetrapyridylporphyrins and arene ruthenium(II) complexes to treat synovial sarcoma by photodynamic therapy. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424622500018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Four tetrapyridylporphyrin and four dipyridylporphyrin arene ruthenium complexes have been synthesized and characterized. In these complexes, the porphyrin core is either metal-free or occupied by zinc, and the arene ligand of the arene ruthenium units are either the standard methyl-isopropyl-benzene ([Formula: see text]cymene) or the less common phenylpropanol (PhPrOH) derivative. The porphyrin derivatives are coordinated to four arene ruthenium units or only two, in accordance with the number of pyridyl substituents at the periphery of the porphyrins, 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (TPyP) and 5,15-diphenyl-10,20-di(pyridin-4-yl)porphyrin (DPhDPyP). All eight complexes were evaluated as anticancer agents on synovial sarcoma cells, in the presence and absence of light, suggesting that both the arene ligand and the porphyrin core substituent can play a crucial role in fine-tuning the photodynamic activity of such organometallic photosensitizers.
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Affiliation(s)
- Manuel Gallardo-Villagrán
- Laboratoire PEIRENE, Faculté de Pharmacie, Université de Limoges, EA 7500, F-87025 Limoges, France
- Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, CH-2000 Neuchâtel, Switzerland
| | - Lucie Paulus
- Laboratoire PEIRENE, Faculté de Pharmacie, Université de Limoges, EA 7500, F-87025 Limoges, France
| | - Yves Champavier
- Laboratoire PEIRENE, Faculté de Pharmacie, Université de Limoges, EA 7500, F-87025 Limoges, France
- BISCEm, NMR platform, Centre de Biologie et de Recherche en Santé (CBRS), Limoges, France
| | - David Yannick Leger
- Laboratoire PEIRENE, Faculté de Pharmacie, Université de Limoges, EA 7500, F-87025 Limoges, France
| | - Bruno Therrien
- Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, CH-2000 Neuchâtel, Switzerland
| | - Bertrand Liagre
- Laboratoire PEIRENE, Faculté de Pharmacie, Université de Limoges, EA 7500, F-87025 Limoges, France
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Rioux B, Pinon A, Gamond A, Martin F, Laurent A, Champavier Y, Barette C, Liagre B, Fagnère C, Sol V, Pouget C. Synthesis and biological evaluation of chalcone-polyamine conjugates as novel vectorized agents in colorectal and prostate cancer chemotherapy. Eur J Med Chem 2021; 222:113586. [PMID: 34116328 DOI: 10.1016/j.ejmech.2021.113586] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 12/27/2022]
Abstract
The aim of this study was to synthesize chalcone-polyamine conjugates in order to enhance bioavailability and selectivity of chalcone core towards cancer cells, using polyamine-based vectors. Indeed, it is well-known that polyamine transport system is upregulated in tumor cells. 3',4,4',5'-tetramethoxychalcone was selected as parent chalcone since it was found to be an efficient anti-proliferative agent on various cancer cells. A series of five chalcone-polyamine conjugates was obtained using the 4-bromopropyloxy-3',4',5'-trimethoxychalcone as a key intermediate. Chalcone core and polyamine tails were fused through an amine bond. These conjugates were found to possess a marked in vitro antiproliferative effect against colorectal (HT-29 and HCT-116) and prostate cancer (PC-3 and DU-145) cell lines. The most active conjugate (compound 8b) was then chosen for further biological evaluations to elucidate mechanisms responsible for its antiproliferative activity. Investigations on cell cycle distribution revealed that this conjugate can prevent the proliferation of human colorectal and prostate cancer cells by blocking the cell cycle at the G1 and G2 phase, respectively. Flow cytometry analysis revealed a sub-G1 peak, characteristic of apoptotic cell population and our inquiries highlighted apoptosis induction at early and later stages through several pro-apoptotic markers. Therefore, this chalcone-N1-spermidine conjugate could be considered as a promising agent for colon and prostatic cancer adjuvant therapy.
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Affiliation(s)
- Benjamin Rioux
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Aline Pinon
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Aurélie Gamond
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Frédérique Martin
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Aurélie Laurent
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Yves Champavier
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France; Université de Limoges, BISCEm NMR Platform, GEIST, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Caroline Barette
- Université Grenoble Alpes, CEA, INSERM, IRIG, BGE U1038, Genetics & Chemogenomics, 17 Avenue des Martyrs, Grenoble, 38054, France
| | - Bertrand Liagre
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Catherine Fagnère
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Vincent Sol
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France
| | - Christelle Pouget
- Université de Limoges, Laboratoire PEIRENE EA 7500, Faculté de Pharmacie, 2 Rue Du Dr Marcland, 87025, Limoges Cedex, France.
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Lagarde A, Mambu L, Mai PY, Champavier Y, Stigliani JL, Beniddir MA, Millot M. Chlorinated bianthrones from the cyanolichen Nephroma laevigatum. Fitoterapia 2021; 149:104811. [PMID: 33359429 DOI: 10.1016/j.fitote.2020.104811] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 11/25/2022]
Abstract
While depsidones, depsides or dibenzofuran-like compounds dominate the chemical composition of lichens, the cyanolichen Nephroma laevigatum affords a diversity of quinoid pigments represented by chlorinated anthraquinones derived from emodin and new bianthrones resulting from the homo- or heterodimerization of monomers. Bianthrones were pointed out from the dichloromethane extract by MS/MS-based molecular networking, then isolated and characterized on the basis of extensive spectroscopic analyzes and GIAO NMR shift calculation followed by CP3 analyzes.
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Affiliation(s)
- Aurélie Lagarde
- Departement de Pharmacognosie, Faculté de Pharmacie, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges Cedex, France
| | - Lengo Mambu
- Departement de Pharmacognosie, Faculté de Pharmacie, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges Cedex, France.
| | - Phuong-Y Mai
- Departement de Pharmacognosie, Faculté de Pharmacie, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges Cedex, France
| | - Yves Champavier
- Plateforme BISCEm, Université de Limoges, 2 Rue du Pr Descottes, 87025 Limoges Cedex, France.
| | - Jean-Luc Stigliani
- Laboratoire de Chimie de Coordination, UPR CNRS 8241, Université de Toulouse UPS, France.
| | - Mehdi A Beniddir
- Équipe "Chimie des Substances Naturelles", Université Paris-Saclay, CNRS, BioCIS, 5, rue J.-B. Clément, 92290 Châtenay-Malabry, France.
| | - Marion Millot
- Departement de Pharmacognosie, Faculté de Pharmacie, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges Cedex, France.
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Ben Salah S, Sanselme M, Champavier Y, Othman M, Daïch A, Chataigner I, Martin Lawson A. Five‐Membered Nitrogen Heterocycles Synthesis through 1,3‐Dipolar Cycloaddition of Non‐Stabilized Azomethine Ylides with 2‐Pyridone Heteroaromatic Systems as Dipolarophiles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sami Ben Salah
- Normandie Université, France UNILEHAVRE, URCOM, EA 3212, INC3 M, FR 3038 CNRS 76600 Le Havre France
| | - Morgane Sanselme
- Normandie Université, France UNIROUEN, Laboratoire SMS EA 3233 1 rue Tesnière, 76821 Mont Saint Aignan France
| | - Yves Champavier
- PEIRENE EA 7500/BISCEm, US042 INSERM, UMS2015 CNRS Centre de Biologie Recherche et Santé 2 rue du Dr Marcland 87025 Limoges Cedex France
| | - Mohamed Othman
- Normandie Université, France UNILEHAVRE, URCOM, EA 3212, INC3 M, FR 3038 CNRS 76600 Le Havre France
| | - Adam Daïch
- Normandie Université, France UNILEHAVRE, URCOM, EA 3212, INC3 M, FR 3038 CNRS 76600 Le Havre France
| | - Isabelle Chataigner
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA Laboratory 76000 Rouen France
- CNRS Sorbonne Université LCT UMR 7616 75005 Paris France
| | - Ata Martin Lawson
- Normandie Université, France UNILEHAVRE, URCOM, EA 3212, INC3 M, FR 3038 CNRS 76600 Le Havre France
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Godard J, Brégier F, Arnoux P, Myrzakhmetov B, Champavier Y, Frochot C, Sol V. New Phenalenone Derivatives: Synthesis and Evaluation of Their Singlet Oxygen Quantum Yield. ACS Omega 2020; 5:28264-28272. [PMID: 33163810 PMCID: PMC7643266 DOI: 10.1021/acsomega.0c04172] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/13/2020] [Indexed: 05/29/2023]
Abstract
1H-Phenalen-1-one is a very efficient and easy-to-synthesize photosensitizer. Many substitutions have been previously described, but most of them significantly reduce the singlet oxygen quantum yield. The chloromethyl derivative described elsewhere is a good starting point for the synthesis of many useful derivatives because of the methylene bridge that saves its unique photosensitizing properties. Eighteen new phenalenone derivatives have been synthesized, bearing amine, carboxylic acid, alcohol, azide, and other major functional groups in organic chemistry. These reactions were carried out in good-to-excellent yields, and most of these new compounds retained the singlet oxygen quantum yield of the parent molecule. These new derivatives are very promising precursors for a number of applications such as the development of photosensitive antimicrobial agents or materials.
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Affiliation(s)
- Jérémy Godard
- Université
de Limoges, Laboratoire PEIRENE EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Frédérique Brégier
- Université
de Limoges, Laboratoire PEIRENE EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
- GDR CNRS 2067, “MAPYRO” Paris, France
| | - Philippe Arnoux
- Université de Lorraine, Laboratoire Réactions et Génies
des Procédés, UMR 7274 CNRS, ENSIC, 1 Rue Grandville, 54001 Nancy Cedex, France
- GDR CNRS 2067, “MAPYRO” Paris, France
| | - Bauyrzhan Myrzakhmetov
- Université de Lorraine, Laboratoire Réactions et Génies
des Procédés, UMR 7274 CNRS, ENSIC, 1 Rue Grandville, 54001 Nancy Cedex, France
| | - Yves Champavier
- BISCEm, FR3503 GEIST, Centre de Biologie et de Recherche en Santé
(CBRS), 2 rue du Dr Marcland, 87025 Limoges Cedex, France
| | - Céline Frochot
- Université de Lorraine, Laboratoire Réactions et Génies
des Procédés, UMR 7274 CNRS, ENSIC, 1 Rue Grandville, 54001 Nancy Cedex, France
- GDR CNRS 2067, “MAPYRO” Paris, France
| | - Vincent Sol
- Université
de Limoges, Laboratoire PEIRENE EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
- GDR CNRS 2067, “MAPYRO” Paris, France
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Brégier F, Godard J, Thiais J, Bouramtane S, Moulin A, Champavier Y, Mailleau A, Chaleix V, Sol V. Regioselective reduction of 5-aryl-10,15,20-tris(pyridyl) porphyrin to 5-aryl-10,15,20-tris(pyridyl)dihydroporphyrin (chlorin). J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424619501438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Dihydroporphyrins or chlorins differ from porphyrins only by saturation of a peripheral double bond of the macrocycle. However, this small structural difference leads to a significant increase of the absorption band at approximately 650 nm, which makes them very interesting candidates for photodynamic therapy applications. The reduction of porphyrins bearing two, three or four pyridyl substituents with tin(II) chloride has been developed for the synthesis of dihydroporphyrins in yields of 15–73%. The reduction of 5-(aryl)-10,15,20-tris(2 or 4-pyridyl)porphyrin with tin(II) chloride dihydrate demonstrated good regioselectivity. Porphyrins with one meso-aryl bearing one electron-donating group (EDG) gave 5-aryl-10,15,20-tris(2- or 4-pyridyl)-17,18-dihydroporphyrins in 17–72% yield. Porphyrins with one meso-aryl bearing one or more electron-withdrawing groups (EWG) gave 5-aryl-10,15,20-tris(4-pyridyl)-17,18-dihydroporphyrins or 5-aryl-10,15,20-tris(4-pyridyl)-7,8-dihydroporphyrins in 15–21% yield and isobacteriochlorin. We have also proven the possibility of functionalizing these compounds to design new regioisomerically pure photosensitizers.
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Affiliation(s)
- Frédérique Brégier
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Jérémy Godard
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Jordan Thiais
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Soukaina Bouramtane
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Alexia Moulin
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Yves Champavier
- BISCEm, FR3503 GEIST, Centre de Biologie et de Recherche en Santé (CBRS), 2 rue du Dr Marcland, 87025 Limoges Cedex, France
| | - Alexis Mailleau
- BISCEm, FR3503 GEIST, Centre de Biologie et de Recherche en Santé (CBRS), 2 rue du Dr Marcland, 87025 Limoges Cedex, France
| | - Vincent Chaleix
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Vincent Sol
- Université de Limoges, PEIRENE, EA 7500, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
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Rioux B, Pouget C, Ndong-Ntoutoume GM, Granet R, Gamond A, Laurent A, Pinon A, Champavier Y, Liagre B, Fagnère C, Sol V. Enhancement of hydrosolubility and in vitro antiproliferative properties of chalcones following encapsulation into β-cyclodextrin/cellulose-nanocrystal complexes. Bioorg Med Chem Lett 2019; 29:1895-1898. [DOI: 10.1016/j.bmcl.2019.05.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 05/24/2019] [Accepted: 05/27/2019] [Indexed: 12/24/2022]
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Dieu A, Mambu L, Champavier Y, Chaleix V, Sol V, Gloaguen V, Millot M. Antibacterial activity of the lichens Usnea Florida and Flavoparmelia caperata (Parmeliaceae). Nat Prod Res 2019; 34:3358-3362. [DOI: 10.1080/14786419.2018.1561678] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Amandine Dieu
- Laboratoire PEIRENE (EA 7500), Universit é de Limoges, Limoges cedex, France
| | - Lengo Mambu
- Laboratoire PEIRENE (EA 7500), Universit é de Limoges, Limoges cedex, France
| | - Yves Champavier
- BISCEM Plateform, Université de Limoges, Limoges cedex, France
| | - Vincent Chaleix
- Laboratoire PEIRENE (EA 7500), Universit é de Limoges, Limoges cedex, France
| | - Vincent Sol
- Laboratoire PEIRENE (EA 7500), Universit é de Limoges, Limoges cedex, France
| | - Vincent Gloaguen
- Laboratoire PEIRENE (EA 7500), Universit é de Limoges, Limoges cedex, France
| | - Marion Millot
- Laboratoire PEIRENE (EA 7500), Universit é de Limoges, Limoges cedex, France
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Piriou C, Viers L, Lucas R, Bouzat F, Laadoua H, Champavier Y, Foucaud S, Coelho C, Babonneau F. Rheological and thermal behaviours of a hyperbranched polycarbosilane. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4443] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Lucas Viers
- Université de Limoges; IRCER, UMR 7315 F-87068 Limoges France
| | - Romain Lucas
- Université de Limoges; IRCER, UMR 7315 F-87068 Limoges France
| | - Fabien Bouzat
- Université de Limoges; IRCER, UMR 7315 F-87068 Limoges France
| | - Hatim Laadoua
- Université de Limoges; IRCER, UMR 7315 F-87068 Limoges France
| | - Yves Champavier
- BISCEm, Service de RMN, CBRS; rue Bernard Descottes F-87025 Limoges France
| | - Sylvie Foucaud
- Université de Limoges; IRCER, UMR 7315 F-87068 Limoges France
| | - Cristina Coelho
- Sorbonne Université, CNRS, Institut des Matériaux de Paris-Centre; FR2482 F-75005 Paris France
| | - Florence Babonneau
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP; F-75005 Paris France
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12
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Le Guern F, Ouk TS, Ouk C, Vanderesse R, Champavier Y, Pinault E, Sol V. Lysine Analogue of Polymyxin B as a Significant Opportunity for Photodynamic Antimicrobial Chemotherapy. ACS Med Chem Lett 2018; 9:11-16. [PMID: 29348804 DOI: 10.1021/acsmedchemlett.7b00360] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/17/2017] [Indexed: 11/30/2022] Open
Abstract
In order to highlight the potential of photodynamic antimicrobial chemotherapy in case of infections by antibiotic resistant-strains, a new antimicrobial peptide conjugate has been synthesized, consisting of a derivative of polymyxin B and a cationic porphyrin covalently attached together to a spacer. A polymyxin-derived moiety was subjected to a primary structural modification in the replacement of four diaminobutyrate residues with lysine ones. This modification was done in order to strongly reduce bactericidal activity, with the aim to eliminate the potential rise of polymyxin-resistant strains. Despite this modification, this new conjugate displayed a strong photobactericidal activity against Gram-positive as well as Gram-negative bacteria. It was further shown that this conjugate was able to strongly stick to the cell walls of either kind of strain, thus helping to inactivate bacteria through the production of reactive oxygen species under light irradiation.
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Affiliation(s)
- Florent Le Guern
- Université de Limoges, Laboratoire de
Chimie des Substances Naturelles (LCSN), EA 1069, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Tan-Sothea Ouk
- Université de Limoges, Laboratoire de
Chimie des Substances Naturelles (LCSN), EA 1069, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Catherine Ouk
- Université de Limoges, BISCEm, 87000 Limoges, France
| | - Regis Vanderesse
- Université de Lorraine, Laboratoire de Chimie Physique Macromoléculaire
(LCPM), UMR 7375 CNRS, ENSIC, 1 rue Grandville, 54000 Nancy, France
| | | | | | - Vincent Sol
- Université de Limoges, Laboratoire de
Chimie des Substances Naturelles (LCSN), EA 1069, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
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Delebassée S, Mambu L, Pinault E, Champavier Y, Liagre B, Millot M. Cytochalasin E in the lichen Pleurosticta acetabulum . Anti-proliferative activity against human HT-29 colorectal cancer cells and quantitative variability. Fitoterapia 2017; 121:146-151. [DOI: 10.1016/j.fitote.2017.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/06/2017] [Accepted: 07/08/2017] [Indexed: 12/26/2022]
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Rioux B, Pouget C, Fidanzi-Dugas C, Gamond A, Laurent A, Semaan J, Pinon A, Champavier Y, Léger DY, Liagre B, Duroux JL, Fagnère C, Sol V. Design and multi-step synthesis of chalcone-polyamine conjugates as potent antiproliferative agents. Bioorg Med Chem Lett 2017; 27:4354-4357. [DOI: 10.1016/j.bmcl.2017.08.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 08/10/2017] [Accepted: 08/12/2017] [Indexed: 01/08/2023]
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15
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Boëns B, Ouk TS, Champavier Y, Zerrouki R. Synthesis and Biological Evaluations of Click-Generated Nitrogen Mustards. Nucleosides Nucleotides Nucleic Acids 2016; 34:500-14. [PMID: 26158568 DOI: 10.1080/15257770.2015.1017580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This paper describes the synthesis of new click-generated nitrogen mustards and their biological evaluation. By using the copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction, we managed to synthesize eight new nitrogen mustards. This strategy paves the way for the synthesis of a new family of nitrogen mustard, with an important structural variability. Furthermore, we studied the biological activity of synthesized compounds by testing their cytotoxicity on four representative cancer cell lines A431, JURKAT, K562, and U266. One structure, 1-benzyl-4-(N,N-di-2-chloroethylaminomethyl)-1H-[1,2,3]triazole, showed an interesting cytotoxic effect.
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Affiliation(s)
- Benjamin Boëns
- a Laboratoire de Chimie des Substances Naturelles , Albert Thomas , Limoges , France
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16
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Millot M, Martin-de-Lassalle M, Chollet-Krugler M, Champavier Y, Mambu L, Chulia JA, Lacaille-Dubois MA. Two New Retigerane-Type Sesterterpenoids from the LichenLeprocaulon microscopicum. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201500225] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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17
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Dieu A, Millot M, Champavier Y, Mambu L, Chaleix V, Sol V, Gloaguen V. Uncommon chlorinated xanthone and other antibacterial compounds from the lichen Cladonia incrassata. Planta Med 2014; 80:931-935. [PMID: 25029172 DOI: 10.1055/s-0034-1382827] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bioassay-guided fractionation of an extract of the lichen Cladonia incrassata against Staphylococcus aureus led to a novel compound, 1,5-dihydroxy-2,4,6-trichloro-7-methylxanthone (1), along with six known compounds: (-)-usnic acid (2), didymic acid (3), condidymic acid (4), squamatic acid (5), thamnolic acid (6), and prasinic acid (7). Didymic, condidymic, and prasinic acids were isolated for the first time from C. incrassata. Didymic, condidymic, and (-)-usnic acids were active against S. aureus (a minimum inhibitory concentration of 7.5 µg/mL).
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Affiliation(s)
- Amandine Dieu
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté de Pharmacie, Université de Limoges, Limoges, France
| | - Marion Millot
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté de Pharmacie, Université de Limoges, Limoges, France
| | - Yves Champavier
- Service Commun de Recherche et d'Analyse des Biomolécules de Limoges, Faculté de Pharmacie, Université de Limoges, Limoges, France
| | - Lengo Mambu
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté de Pharmacie, Université de Limoges, Limoges, France
| | - Vincent Chaleix
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté de Pharmacie, Université de Limoges, Limoges, France
| | - Vincent Sol
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté de Pharmacie, Université de Limoges, Limoges, France
| | - Vincent Gloaguen
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté de Pharmacie, Université de Limoges, Limoges, France
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18
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Gueye R, Pouget C, Champavier Y, Buxeraud J, Duroux JL, Fagnère C. Synthetic strategies to 2′-hydroxy-4′-methylsulfonylacetophenone, a key compound for the preparation of flavonoid derivatives. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Pouget C, Trouillas P, Gueye R, Champavier Y, Laurent A, Duroux JL, Sol V, Fagnere C. Exploring the Use of the Suzuki Coupling Reaction in the Synthesis of 4′-Alkyl-2′-hydroxyacetophenones. Synlett 2013. [DOI: 10.1055/s-0033-1340312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Christelle Pouget
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Patrick Trouillas
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Rokhaya Gueye
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Yves Champavier
- Service Commun de Recherche et d’Analyses de Biomolécules de Limoges (SCRABL), Université de Limoges
| | - Aurélie Laurent
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Jean-Luc Duroux
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Vincent Sol
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Catherine Fagnere
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
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20
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Kaouadji M, Champavier Y, Morand JM. Platanus acerifolia’s buds: additional non-polar metabolites and structure revision of two previous dihydrochalcone-like metabolites. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Vergnaud J, Faugeras PA, Chaleix V, Champavier Y, Zerrouki R. Design of a new oligotriazole peptide nucleic acid analogue (oT-PNA). Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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23
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Chehaidi S, Foucaud S, Maître A, Goursat P, Bessada C, Rakhmatullin A, Champavier Y. Two synthesis routes of organometallic precursors for the elaboration of SiCNYO pre-alloyed nanopowders. Appl Organomet Chem 2010. [DOI: 10.1002/aoc.1620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Anouar E, Calliste CA, Košinová P, Di Meo F, Duroux JL, Champavier Y, Marakchi K, Trouillas P. Free Radical Scavenging Properties of Guaiacol Oligomers: A Combined Experimental and Quantum Study of the Guaiacyl-Moiety Role. J Phys Chem A 2009; 113:13881-91. [DOI: 10.1021/jp906285b] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E. Anouar
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - C. A. Calliste
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - P. Košinová
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - F. Di Meo
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - J. L. Duroux
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - Y. Champavier
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - K. Marakchi
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - P. Trouillas
- Université de Limoges, EA 4021, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France, Université Mohammed V, Laboratoire de Chimie Théorique, Faculté des Sciences, B.P 1014 Rabat, Morocco, and Service commun de RMN, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges, France
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25
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Lucas R, Zerrouki R, Granet R, Krausz P, Champavier Y. A rapid efficient microwave-assisted synthesis of a 3′,5′-pentathymidine by copper(I)-catalyzed [3+2] cycloaddition. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Teste K, Colombeau L, Hadj-Bouazza A, Lucas R, Zerrouki R, Krausz P, Champavier Y. Solvent-controlled regioselective protection of 5'-O-protected thymidine. Carbohydr Res 2008; 343:1490-5. [PMID: 18479677 DOI: 10.1016/j.carres.2008.04.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Revised: 04/16/2008] [Accepted: 04/17/2008] [Indexed: 10/22/2022]
Abstract
This paper describes an efficient procedure for selective 3'-O- or 3-N-protection of 5'-O-tert-butyldimethylsilylthymidine, depending on the use of aprotic polar solvents with low or high dielectric constant, respectively. These syntheses were activated by either ultrasound or microwaves. Several alkyl bromides offer a convenient route to prepare 3'-O- or 3-N-protected and functionalized thymidine derivatives.
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Affiliation(s)
- K Teste
- Laboratoire de Chimie des Substances Naturelles EA1069, Faculté des Sciences et Techniques, 123 Avenue Albert Thomas, F-87060 Limoges, France
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27
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Lucas R, Neto V, Hadj Bouazza A, Zerrouki R, Granet R, Krausz P, Champavier Y. Microwave-assisted synthesis of a triazole-linked 3′–5′ dithymidine using click chemistry. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.12.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Sol V, Chaleix V, Champavier Y, Granet R, Huang YM, Krausz P. Glycosyl bis-porphyrin conjugates: Synthesis and potential application in PDT. Bioorg Med Chem 2006; 14:7745-60. [PMID: 16959490 DOI: 10.1016/j.bmc.2006.08.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2006] [Revised: 07/30/2006] [Accepted: 08/04/2006] [Indexed: 11/28/2022]
Abstract
Syntheses of new glycosylated neutral and cationic porphyrin dimers linked at the meso-position via a flexible hydrocarbon chain are described. A detailed 1H and 13C NMR study allows their complete structural elucidation. The UV-visible, fluorescence and MALDI mass spectra are also presented. Photocytotoxicities of these compounds against K562 leukaemia cell line are compared to those of Photofrin II.
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Affiliation(s)
- V Sol
- Université de Limoges - Laboratoire de Chimie des Substances Naturelles 123, Avenue Albert Thomas-87060 Limoges, France.
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29
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Mokrini R, Trouillas P, Kaouadji M, Champavier Y, Houée-Lévin C, Fagnère C, Duroux JL. Reactivity of Chalcones with 1-Hydroxymethyl Radicals. Radiat Res 2006; 166:928-41. [PMID: 17149975 DOI: 10.1667/rr0615.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2006] [Accepted: 07/10/2006] [Indexed: 11/03/2022]
Abstract
Reactivity of chalcones with reactive species issued from methanol radiolysis was investigated in the absence or presence of dioxygen. Chalcones are natural antioxidants that are present in fruit and vegetables. Their degradation in the radiolysed solutions was followed by HPLC, NMR, FAB-LSIMS mass spectroscopy and analytical TLC in deaerated solution. Among the 18 identified radiolytic compounds, 16 were new. The formation of the radiolytic products was not influenced by A- and B-ring substitutions. To explain the degradation process, we thus suggested that the primary step was an attack of the alpha,beta-double bond by the 1-hydroxymethyl radical, either at C(alpha) or at C(beta). This step was followed by addition, cyclization or bond dissociations. Different chemical pathways were discussed that implicate the reactive species issued from methanol radiolysis. This paper highlights the relative importance of the different radical species, especially the carbon-centered radical, 1-hydroxymethyl (HMR) and the corresponding oxygen-centered isomer. In addition, an interesting unusual role of dioxygen should be noted; indeed, in the presence of dioxygen, degradation of chalcones was inhibited.
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Affiliation(s)
- Redouane Mokrini
- EA 1085 Biomolécules et Cibles Cellulaires Tumorales, 87025 Limoges Cedex, France
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30
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Mokrini R, Trouillas P, Kaouadji M, Champavier Y, Houée-Lévin C, Calliste CA, Duroux JL. Radiolytic Transformation of 2,2′,4′-Trihydroxychalcone. Radiat Res 2006; 165:730-40. [PMID: 16802874 DOI: 10.1667/rr3562.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Radiolysis of 2,2',4'-trihydroxychalcone, a natural antioxidant present in fruit and vegetables, was performed in ethanol in the absence or in the presence of dioxygen. The degradation process of chalcone was followed in de-aerated solution by HPLC, NMR, FAB-LSIMS mass spectroscopy and analytical TLC. Under anaerobic conditions, six new products (three couples of diastereoisomers) were identified. Four of them kept the chalcone skeleton with OCH(2)CH(3), CH(OH)CH(3) and H substitutions on C(alpha) and C(beta). Thus the target was the alpha-beta double bond on which ethanol radicals were added. The two other compounds were formed in a second stage and exhibited a cyclization between the substituent on C(beta) and the carbonyl group. In the presence of dioxygen, these reactions were prevented and chalcone was protected. This study was the first step toward understanding of the behavior chalcone in irradiated fruits and vegetables.
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Affiliation(s)
- Redouane Mokrini
- EA 1085 "Biomolécules et Cibles Cellulaires Tumorales," 87025 Limoges Cedex, France
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31
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Garcia G, Sol V, Lamarche F, Granet R, Guilloton M, Champavier Y, Krausz P. Synthesis and photocytotoxic activity of new chlorin–polyamine conjugates. Bioorg Med Chem Lett 2006; 16:3188-92. [PMID: 16621548 DOI: 10.1016/j.bmcl.2006.03.044] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2006] [Revised: 03/16/2006] [Accepted: 03/16/2006] [Indexed: 10/24/2022]
Abstract
This paper reports the synthesis of new chlorin-polyamine conjugates designed to improve the targeting of cancer cells. Photocytotoxic activity of these photosensitizers was tested against human chronic myelogenous leukemia cells (K562) and compared to the effects of Photofrin II and chlorin e6.
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Affiliation(s)
- Guillaume Garcia
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, 123 Avenue Albert Thomas, F-87060 Limoges, France
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32
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Lawson MA, Kaouadji M, Allais DP, Champavier Y, Chulia AJ. Substituted tubaic acids, new oxidative rotenoid metabolites from Lonchocarpus nicou. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2005.11.069] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Hadj-Bouazza A, Zerrouki R, Krausz P, Laumond G, Aubertin AM, Champavier Y. New acyclonucleosides: synthesis and anti-HIV activity. Nucleosides Nucleotides Nucleic Acids 2005; 24:1249-63. [PMID: 16270666 DOI: 10.1081/ncn-200067423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The synthesis of new acyclic nucleosides is described. These syntheses were accomplished by various methods: glycosylation, selective or total deprotection, oxidation/reduction, chlorination or azidation of hydroxyl groups. The compounds were characterized with NMR, mass and IR spectroscopy. Antiviral properties of these compounds were evaluated on HIV-1 infected cell lines.
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Affiliation(s)
- Amel Hadj-Bouazza
- Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences et Techniques, Université de Limoges, Limoges, France
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Memmi A, Granet R, Champavier Y, Krausz P. A highly efficient, solvent-free and energy-effective method of cellulose acetylation. e-Polymers 2005. [DOI: 10.1515/epoly.2005.5.1.885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractAcetylation of cellulose by acetic anhydride was found to be catalysed quantitatively by iodine under solvent-free conditions at room temperature. Cellulose acetates were characterised by 1H NMR spectroscopy.
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Affiliation(s)
- Abdelmajid Memmi
- 1Faculté de Pharmacie, Université de Monastir, Rue Fattouma Bourguiba, Tunisie
| | - Robert Granet
- 2Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences et Techniques, Université de Limoges, 123, Avenue Albert Thomas, 87060 Limoges, France
| | - Yves Champavier
- 3Faculté de Pharmacie, Service commun de RMN, Université de Limoges, 2 Rue du Dr Marcland, 87025 Limoges, France
| | - Pierre Krausz
- 2Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences et Techniques, Université de Limoges, 123, Avenue Albert Thomas, 87060 Limoges, France
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Yahiaoui S, Pouget C, Fagnere C, Champavier Y, Habrioux G, Chulia AJ. Synthesis and evaluation of 4-triazolylflavans as new aromatase inhibitors. Bioorg Med Chem Lett 2004; 14:5215-8. [PMID: 15380230 DOI: 10.1016/j.bmcl.2004.07.090] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2003] [Revised: 07/12/2004] [Accepted: 07/15/2004] [Indexed: 10/26/2022]
Abstract
Aromatase is a target of pharmacological interest for the treatment of estrogen-dependent cancers. Azole derivatives such as letrozole or anastrozole have been developed for aromatase inhibition and are used for the treatment of breast tumors. In this paper, four 4-triazolylflavans were synthesized and were found to exhibit moderate to high inhibitory activity against aromatase.
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Affiliation(s)
- Samir Yahiaoui
- UPRES EA 1085 Biomolécules et Cibles Cellulaires Tumorales, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges, France
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37
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Satgé C, Granet R, Verneuil B, Champavier Y, Krausz P. Synthesis and properties of new bolaform and macrocyclic galactose-based surfactants obtained by olefin metathesis. Carbohydr Res 2004; 339:1243-54. [PMID: 15113661 DOI: 10.1016/j.carres.2004.03.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2003] [Revised: 03/01/2004] [Accepted: 03/03/2004] [Indexed: 11/30/2022]
Abstract
A series of galactose-based surfactants with various structures likely to display new interesting properties were synthesized. Four monocatenary surfactants were elaborated by microwave-assisted galactosylation of undecanol or 10-undecenol. These compounds were slightly soluble in water. Their tensioactive properties were determined at 45 degrees C. Olefin metathesis was used to synthesize the two single-chain bolaforms from undec-10-enyl galactopyranosides; two pseudomacrocyclic bolaforms were prepared by grafting two carbamates at O-4 and O-4' sugar positions of the single-chain bolaforms. These four surfactants are insoluble in water and undergo monolayer compression. Cyclization of these bolaforms by olefin metathesis led to macrocyclic surfactant analogues of archaeobacterial membrane components.
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Affiliation(s)
- Céline Satgé
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, 123 Av. Albert Thomas, F-87060 Limoges, France
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38
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Marfak A, Trouillas P, Allais DP, Champavier Y, Calliste CA, Duroux JL. Radiolysis of kaempferol in water/methanol mixtures. Evaluation of antioxidant activity of kaempferol and products formed. J Agric Food Chem 2003; 51:1270-1277. [PMID: 12590467 DOI: 10.1021/jf020836g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Oxidative reaction between hydroxymethyl radical ((*)CH(2)OH) and kaempferol, in methanol and methanol/water mixtures, was studied by gamma-radiolysis using a (60)Co source. Radiolysis was performed with concentrations and doses ranging from 5 x 10(-)(5) M to 5 x 10(-)(3) M and from 0.5 kGy to 14 kGy, respectively. Kaempferol degradation was followed by HPLC. Results showed that (*)CH(2)OH reacts with kaempferol at the 3-OH group and produces two depsides (K1 and K2) and other products including K3. K1, K2, and K3 were identified by NMR, LC-MS, and HRMS. The kaempferol degradation pathway leading to the K1, K2, and K3 formation is proposed. It was observed that the more water concentration in the irradiation medium increases, the more K2 concentration increases. Comprehension of food preservation is not clear because many phenomena occurring during irradiation are not established. Radiolysis of kaempferol in water/methanol mixtures helps to elucidate the phenomenon and it is possible that during the treatment of nutriments by gamma-irradiation, a series of products such as depside K2 could be formed. Antioxidant properties of kaempferol radiolysis products were evaluated according to their capacity to decrease the EPR DPPH (1,1-diphenyl-2-picrylhydrazil) signal and to inhibit superoxide radicals formed by the enzyme reaction "xanthine + xanthine oxidase".
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Affiliation(s)
- Abdelghafour Marfak
- UPRES EA 1085, Biomolécules et Cibles Cellulaires Tumorales, Faculté de Pharmacie, 2 rue du Dr. Marcland, 87025 Limoges Cedex, France
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Abstract
The condensation of 2'-hydroxyacetophenone (1) with aromatic aldehydes (2) in a well closed vessel using microwave irradiation or classical heating at 132 degrees C, provides a fast and simple method for the liquid-phase synthesis of 2'-hydroxychalcones without formation of by-products. Antiproliferative activity of these compounds were evaluated using MCF-7 cells.
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Affiliation(s)
- Edmont V Stoyanov
- Department of Industrial Pharmacy, Faculty of Pharmacy, Sofia, Bulgaria.
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Marfak A, Trouillas P, Allais DP, Champavier Y, Calliste CA, Duroux JL. Radiolysis of quercetin in methanol solution: observation of depside formation. J Agric Food Chem 2002; 50:4827-4833. [PMID: 12166967 DOI: 10.1021/jf020165m] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Radiolysis of the flavonol quercetin, a natural antioxidant, was performed in methanol. The degradation process was followed by HPLC analyses. The major product was identified as a depside (Q1) by NMR and LC-MS. The G(Q1) radiolytic factor was plotted versus the initial concentration of quercetin. This radiolytic process was attributed to the CH3O* radicals presented in the irradiated medium. The proposed mechanism invoked a stereospecific oxidation of the 3-hydroxyl group of quercetin which led to C-ring opening and to the formation of the depside Q1. In presence of water, Q1 was transformed into another depside, Q2, by an inverse esterification reaction. A chemical equilibrium was observed between Q1 and Q2. The comprehension of the radiolytic process of quercetin in methanol solution is of importance. Indeed, the same type of oxidative reactions could occur on flavonoids during preservation of food by ionizing radiation.
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Affiliation(s)
- Abdelghafour Marfak
- UPRES EA 1085, Biomolécules et Cibles Cellulaires Tumorales, Faculté de Pharmacie, University of Limoges, 2 rue du Dr. Marcland, 87025 Limoges Cedex, France
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41
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Abstract
PURPOSE Aromatase inhibitors are known to prevent the conversion of androgens to estrogens and play a significant role in the treatment of estrogen dependent diseases such as breast cancer. Some flavonoids have been reported as potent aromatase inhibitors; therefore, in an effort to develop novel anti breast cancer agents, B ring substituted flavanones with a 7-methoxy group on A ring were synthesized and tested to assess their ability to inhibit aromatase activity and to determine the optimal B ring substitution pattern. METHODS A series of flavanones was prepared by cyclisation of 2'-hydroxychalcones previously obtained by Claisen-Schmidt condensation and the aromatase inhibitory activity of these compounds was investigated using human placental microsomes and radiolabeled [1,2,6,7-(3)H]-androstenedione as substrate. RESULTS Almost all flavanones exhibited inhibitory effect on the aromatase activity but their potency was dependent on their B ring substitution pattern. Hydroxylation at position 3' and/or 4' enhanced the anti-aromatase activity; thus, 3',4'-dihydroxy-7-methoxyflavanone was found to be twice more potent than aminoglutethimide, the first aromatase inhibitor clinically used. CONCLUSIONS These results indicated that these flavanones could be considered as potential anti breast cancer agents through the inhibition of aromatase activity and allowed us to select some of these compounds as skeleton for the development of flavonoid structurally-related aromatase inhibitors.
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Affiliation(s)
- Christelle Pouget
- UPRES EA 1085, Biomolécules et Cibles Cellulaires Tumorales-Prolifération cellulaire et inhibition enzymatique Faculté de Pharmacie, Limoges, France
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Le Bail JC, Champavier Y, Chulia AJ, Habrioux G. Effects of phytoestrogens on aromatase, 3beta and 17beta-hydroxysteroid dehydrogenase activities and human breast cancer cells. Life Sci 2000; 66:1281-91. [PMID: 10755463 DOI: 10.1016/s0024-3205(00)00435-5] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Isoflavones and others phytoestrogens have been suggested to be anticarcinogenic. Anti-aromatase, antiestrogenic or antiproliferative actions of these compounds have been postulated and related to the observation that there is a reduced incidence of breast cancer associated with diet. In this study, we explored some mechanisms by which they can exert cancer-preventive effects. Phytoestrogens were tested for estimating anti-aromatase, anti-3beta-hydroxysteroid dehydrogenase delta5/delta4 isomerase (3beta-HSD) and anti-17beta-hydroxysteroid dehydrogenase (17beta-HSD) activities in human placental microsomes. We found that isoflavonoids and compounds which presented the phenolic B ring in the 3 position on the pyran ring preferentially inhibited 3beta-HSD and/or 17beta-HSD activities than aromatase activity. We also evaluated their interactions with the estrogen receptor using a stably transfected human breast cancer cell line (MVLN). On the other hand phytoestrogens were evaluated for their effects on the proliferation in estrogen-dependent (MCF-7) and independent (MDA-MB231) human breast cancer cells. We established a relationship structure-activity and determined regions or/and substituents essential for these different activities. However, at high concentrations it seems that some phytoestrogens exert their protection against breast cancer through other estrogen-independent mechanisms.
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Affiliation(s)
- J C Le Bail
- UPRES EA 1085 Biomolécules et cibles cellulaires tumorales-Prolifération cellulaire et inhibition enzymatique, Laboratoire de Biochimie, Limoges, France
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Abstract
Three flavonol triglycosides kaempferol 3-[2Gal-(4-acetylrhamnosyl)robinobioside], kaempferol 3-(2Gal-rhamnosylrobinobioside) and quercetin 3-(2G-rhamnosylrutinoside) have been isolated from a methanolic extract of Galega officinalis aerial parts. They are reported for the first time in the genus Galega; moreover, the acetylated triglycoside is a new natural product.
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Affiliation(s)
- Y Champavier
- UPRES-EA 1085, Laboratoire de Pharmacognosie et de Phytochimie, Université de Limoges, France
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