251
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Pilkington LI, Barker D. Asymmetric Synthesis and CD Investigation of the 1,4-Benzodioxane Lignans Eusiderins A, B, C, G, L, and M. J Org Chem 2012; 77:8156-66. [DOI: 10.1021/jo3015006] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Lisa I. Pilkington
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - David Barker
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
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252
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Gwon SH, Kim SG. One-Pot Cascade Michael-Cyclization Reactions of o-Hydroxycinnamaldehydes: Synthesis of Functionalized 2,3-Dihydrobenzofuranes. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.8.2781] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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253
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Dickson BD, Dittrich N, Barker D. Synthesis of 2,3-syn-diarylpent-4-enamides via acyl-Claisen rearrangements of substituted cinnamyl morpholines: application to the synthesis of magnosalicin. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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254
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Tortoreto C, Achard T, Zeghida W, Austeri M, Guénée L, Lacour J. Enol Acetal Synthesis through Carbenoid CH Insertion into Tetrahydrofuran Catalyzed by CpRu Complexes. Angew Chem Int Ed Engl 2012; 51:5847-51. [DOI: 10.1002/anie.201201541] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Indexed: 11/09/2022]
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255
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Tortoreto C, Achard T, Zeghida W, Austeri M, Guénée L, Lacour J. Enol Acetal Synthesis through Carbenoid CH Insertion into Tetrahydrofuran Catalyzed by CpRu Complexes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201541] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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256
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Abstract
The acyl-Claisen rearrangement, also called a zwitterionic aza-Claisen rearrangement, allows for the synthesis of 2,3-syn-substituted morpholine pent-4-eneamides with high levels of diastereoselectivity. A wide variety of alkyl and aryl substituents can be introduced with yields highly dependent on the stoichiometry of the Lewis acid catalyst. The use of these morpholine amides in the synthesis of the tetrasubstituted tetrahydrofuran lignans fragransin A2, talaumidin, and galbelgin is summarized. The conversion of the Claisen-derived amides into aryl tetraline and 1,1-diarylbutanol lignans via alteration of the protecting groups is also described. Nucleophilic addition of an organometallic reagent to the morpholine amide followed by Wacker oxidation of the alkene gives highly substituted 1,4-diketones, which can be easily converted into fully substituted pyrroles.
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257
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Craft BD, Kerrihard AL, Amarowicz R, Pegg RB. Phenol-Based Antioxidants and the In Vitro Methods Used for Their Assessment. Compr Rev Food Sci Food Saf 2012. [DOI: 10.1111/j.1541-4337.2011.00173.x] [Citation(s) in RCA: 241] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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258
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Comegna D, DellaGreca M, Rosaria Iesce M, Previtera L, Zarrelli A, Zuppolini S. Regiodivergent synthesis of trisubstituted furans through Tf2O-catalyzed Friedel–Crafts acylation: a tool for access to tetrahydrofuranlignan analogues. Org Biomol Chem 2012; 10:1219-24. [DOI: 10.1039/c1ob06560b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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259
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Alcaide B, Almendros P, Martínez del Campo T, Redondo MC, Fernández I. Striking Alkenol Versus Allenol Reactivity: Metal-Catalyzed Chemodifferentiating Oxycyclization of Enallenols. Chemistry 2011; 17:15005-13. [DOI: 10.1002/chem.201102100] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Indexed: 11/11/2022]
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260
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Radha Krishna P, Alivelu M, Prabhakar Rao T. First Stereoselective Total Synthesis of Isoaspinonene through a Baylis-Hillman/Olefin Cross-Metathesis Protocol. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101211] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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261
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Moree SS, khanum SA, Rajesha J. Secoisolariciresinol Diglucoside - A Phytoestrogen Nutraceutical of Flaxseed: Synthesis and Evaluation of Antioxidant Potency. ACTA ACUST UNITED AC 2011. [DOI: 10.5530/ax.2011.4.6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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262
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Polyphenols as antimicrobial agents. Curr Opin Biotechnol 2011; 23:174-81. [PMID: 21925860 DOI: 10.1016/j.copbio.2011.08.007] [Citation(s) in RCA: 775] [Impact Index Per Article: 59.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 08/14/2011] [Accepted: 08/22/2011] [Indexed: 12/22/2022]
Abstract
Polyphenols are secondary metabolites produced by higher plants, which play multiple essential roles in plant physiology and have potential healthy properties on human organism, mainly as antioxidants, anti-allergic, anti-inflammatory, anticancer, antihypertensive, and antimicrobial agents. In the present review the antibacterial, antiviral, and antifungal activities of the most active polyphenol classes are reported, highlighting, where investigated, the mechanisms of action and the structure-activity relationship. Moreover, considering that the microbial resistance has become an increasing global problem, and there is a compulsory need to find out new potent antimicrobial agents as accessories to antibiotic therapy, the synergistic effect of polyphenols in combination with conventional antimicrobial agents against clinical multidrug-resistant microorganisms is discussed.
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263
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Chiarucci M, Locritani M, Cera G, Bandini M. Gold(I)-catalyzed synthesis of γ-vinylbutyrolactones by intramolecular oxaallylic alkylation with alcohols. Beilstein J Org Chem 2011; 7:1198-204. [PMID: 21977203 PMCID: PMC3182428 DOI: 10.3762/bjoc.7.139] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Accepted: 08/15/2011] [Indexed: 11/23/2022] Open
Abstract
Gold(I)-N-heterocyclic carbene (NHC) complexes proved to be a reliable catalytic system for the direct synthesis of functionalized γ-vinylbutyrolactones by intramolecular oxaallylic alkylation with primary alcohols. Good isolated chemical yields were obtained for a range of malonyl and acetate derivatives. The good performance in reagent-grade solvents and the functional group/moisture tolerance make this catalytic process a promising route for the synthesis of architecturally complex polycyclic structures.
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Affiliation(s)
- Michel Chiarucci
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum – Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Mirko Locritani
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum – Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Gianpiero Cera
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum – Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Marco Bandini
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum – Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
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264
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Design, synthesis and antiproliferative activities of biarylolefins based on polyhydroxylated and carbohydrate scaffolds. Eur J Med Chem 2011; 46:3570-80. [DOI: 10.1016/j.ejmech.2011.05.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 05/06/2011] [Accepted: 05/08/2011] [Indexed: 11/20/2022]
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265
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Baumgartner L, Sosa S, Atanasov AG, Bodensieck A, Fakhrudin N, Bauer J, Favero GD, Ponti C, Heiss EH, Schwaiger S, Ladurner A, Widowitz U, Loggia RD, Rollinger JM, Werz O, Bauer R, Dirsch VM, Tubaro A, Stuppner H. Lignan derivatives from Krameria lappacea roots inhibit acute inflammation in vivo and pro-inflammatory mediators in vitro. JOURNAL OF NATURAL PRODUCTS 2011; 74:1779-86. [PMID: 21800856 PMCID: PMC3162300 DOI: 10.1021/np200343t] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The roots of Krameria lappacea are used traditionally against oropharyngeal inflammation. So far, the astringent and antimicrobial properties of its proanthocyanidin constituents are considered to account for the anti-inflammatory effect. The aim of the present study was to characterize pharmacologically a lipophilic extract of K. lappacea roots and several isolated lignan derivatives (1-11) in terms of their putative anti-inflammatory activity. The dichloromethane extract (ID₅₀ 77 μg/cm²) as well compounds 1-11 (ID₅₀ 0.31-0.60 μmol/cm²) exhibited topical antiedematous properties comparable to those of indomethacin (ID₅₀ 0.29 μmol/cm²) in a mouse ear in vivo model. Two of the most potent compounds, 2-(2-hydroxy-4-methoxyphenyl)-5-(3-hydroxypropyl)benzofuran (5) and (+)-conocarpan (7), were studied regarding their time-dependent edema development and leukocyte infiltration up to 48 h after croton oil-induced dermatitis induction, and they showed activity profiles similar to that of hydrocortisone. In vitro studies of the isolated lignan derivatives demonstrated the inhibition of NF-κB, cyclooxygenase-1 and -2, 5-lipoxygenase, and microsomal prostaglandin E₂ synthase-1 as well as antioxidant properties, as mechanisms possibly contributing to the observed in vivo effects. The present findings not only support the ethnopharmacological use of K. lappacea roots but also reveal that the isolated lignan derivatives contribute strongly to the anti-inflammatory activity of this herbal drug.
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Affiliation(s)
- Lisa Baumgartner
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Josef-Moeller-Haus, Innrain 52c, 6020 Innsbruck, Austria
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy
| | - Atanas G. Atanasov
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Antje Bodensieck
- Institute of Pharmaceutical Sciences, Pharmacognosy, Karl-Franzens University Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Nanang Fakhrudin
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Julia Bauer
- Department of Pharmaceutical Analytics, Pharmaceutical Institute, Eberhard-Karls-University Tuebingen, Auf der Morgenstelle 8, 72076 Tuebingen, Germany
| | - Giorgia Del Favero
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy
| | - Cristina Ponti
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy
| | - Elke H. Heiss
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Stefan Schwaiger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Josef-Moeller-Haus, Innrain 52c, 6020 Innsbruck, Austria
| | - Angela Ladurner
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Ute Widowitz
- Institute of Pharmaceutical Sciences, Pharmacognosy, Karl-Franzens University Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Roberto Della Loggia
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy
| | - Judith M. Rollinger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Josef-Moeller-Haus, Innrain 52c, 6020 Innsbruck, Austria
| | - Oliver Werz
- Department of Pharmaceutical Analytics, Pharmaceutical Institute, Eberhard-Karls-University Tuebingen, Auf der Morgenstelle 8, 72076 Tuebingen, Germany
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Rudolf Bauer
- Institute of Pharmaceutical Sciences, Pharmacognosy, Karl-Franzens University Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Verena M. Dirsch
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Josef-Moeller-Haus, Innrain 52c, 6020 Innsbruck, Austria
- Tel: 0043-(0)512-507-5300. Fax: 0043-(0)512-507-2939. E-mail:
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266
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Rye CE, Barker D. Asymmetric Synthesis of (+)-Galbelgin, (−)-Kadangustin J, (−)-Cyclogalgravin and (−)-Pycnanthulignenes A and B, Three Structurally Distinct Lignan Classes, Using a Common Chiral Precursor. J Org Chem 2011; 76:6636-48. [DOI: 10.1021/jo200968f] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Claire E. Rye
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - David Barker
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
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267
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Çayir M, Demirci S, Sezer S, Tanyeli C. Stereoselective synthesis of optically active dihydrofurans and dihydropyrans via a ring closing metathesis reaction. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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268
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de Rezende A, e Silva M, Tavares D, Cunha W, Rezende K, Bastos J, Lehmann M, de Andrade H, Guterres Z, Silva L, Spanó M. The effect of the dibenzylbutyrolactolic lignan (−)-cubebin on doxorubicin mutagenicity and recombinogenicity in wing somatic cells of Drosophila melanogaster. Food Chem Toxicol 2011; 49:1235-41. [DOI: 10.1016/j.fct.2011.03.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 02/27/2011] [Accepted: 03/02/2011] [Indexed: 11/28/2022]
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269
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Abstract
A synthesis of the tetrahydrofuran lignan (±)-agastinol, starting from the cheap Vanillin, has been developed based on Stobbe reaction with diethyl succinate to give the skeleton of lignan, which was then reduced to afford meso- and threo-(±)-secoisolanciresinol. threo-(±)-Secoisolanciresinol was treated with DDQ in acetic acid to give the 2-aryl tetrahydrofuran lignan, and which was then condensed with ferulic acid to give (±)-agastinol for the first time.
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Affiliation(s)
- Junwei Ding
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Haitang Zhou
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Bin Jiao
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yamu Xia
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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270
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Pinto O, Sardinha J, Vaz PD, Piedade F, Calhorda MJ, Abramovitch R, Nazareth N, Pinto M, Nascimento MSJ, Rauter AP. Synthesis of Tetrahydronaphthalene Lignan Esters by Intramolecular Cyclization of Ethyl p-Azidophenyl-2-phenylalkanoates and Evaluation of the Growth Inhibition of Human Tumor Cell Lines. J Med Chem 2011; 54:3175-87. [DOI: 10.1021/jm101182s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Orlando Pinto
- Universidade de Lisboa, Faculdade de Ciências, Centro de Química e Bioquímica/Departamento de Química e Bioquímica (CQB/DQB), Ed. C8, Piso 5, 1749-016 Lisboa, Portugal
| | - João Sardinha
- Universidade de Lisboa, Faculdade de Ciências, Centro de Química e Bioquímica/Departamento de Química e Bioquímica (CQB/DQB), Ed. C8, Piso 5, 1749-016 Lisboa, Portugal
| | - Pedro D. Vaz
- Universidade de Lisboa, Faculdade de Ciências, Centro de Química e Bioquímica/Departamento de Química e Bioquímica (CQB/DQB), Ed. C8, Piso 5, 1749-016 Lisboa, Portugal
| | - Fátima Piedade
- Universidade de Lisboa, Faculdade de Ciências, Centro de Química e Bioquímica/Departamento de Química e Bioquímica (CQB/DQB), Ed. C8, Piso 5, 1749-016 Lisboa, Portugal
| | - Maria J. Calhorda
- Universidade de Lisboa, Faculdade de Ciências, Centro de Química e Bioquímica/Departamento de Química e Bioquímica (CQB/DQB), Ed. C8, Piso 5, 1749-016 Lisboa, Portugal
| | - Rudolph Abramovitch
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - Nair Nazareth
- Centro de Estudos de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Departamento de Ciências Químicas, Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha 164, 4050-047 Porto, Portugal
| | - Madalena Pinto
- Centro de Estudos de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Departamento de Ciências Químicas, Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha 164, 4050-047 Porto, Portugal
| | - Maria S. J. Nascimento
- Centro de Estudos de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Departamento de Ciências Químicas, Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha 164, 4050-047 Porto, Portugal
| | - Amélia P. Rauter
- Universidade de Lisboa, Faculdade de Ciências, Centro de Química e Bioquímica/Departamento de Química e Bioquímica (CQB/DQB), Ed. C8, Piso 5, 1749-016 Lisboa, Portugal
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271
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New two-step sequence involving a hetero-Diels–Alder and a nonphenolic oxidative coupling reaction: a convergent access to analogs of steganacin. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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272
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Highly diastereoselective synthesis of new heterolignan-like 6,7-methylendioxy-tetrahydroquinolines using the clove bud essential oil as raw material. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.083] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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273
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Passiniemi M, Koskinen AMP. Asymmetric synthesis of Pachastrissamine (Jaspine B) and its diastereomers via η3-allylpalladium intermediates. Org Biomol Chem 2011; 9:1774-83. [PMID: 21264408 DOI: 10.1039/c0ob00643b] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A short route for the synthesis of Pachastrissamine (Jaspine B), an anhydrosphingosine derivative, and all three of its diastereomers is presented. The route consists of only 9 steps from the commercially available Garner's aldehyde. The furan framework is formed via an η(3)-allylpalladium intermediate.
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Affiliation(s)
- Mikko Passiniemi
- Department of Chemistry, School of Chemical Technology, Aalto University, P.O. Box 16100 (Kemistintie 1), FI-00076, Aalto, Finland
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274
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Yang G, Shen Y, Li K, Sun Y, Hua Y. AlCl3-Promoted Highly Regio- and Diastereoselective [3 + 2] Cycloadditions of Activated Cyclopropanes and Aromatic Aldehydes: Construction of 2,5-Diaryl-3,3,4-trisubstituted Tetrahydrofurans. J Org Chem 2010; 76:229-33. [DOI: 10.1021/jo1020773] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gaosheng Yang
- Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Yue Shen
- Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Kui Li
- Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Yongxian Sun
- Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Yuanyuan Hua
- Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
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275
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Ignat I, Volf I, Popa VI. A critical review of methods for characterisation of polyphenolic compounds in fruits and vegetables. Food Chem 2010; 126:1821-35. [PMID: 25213963 DOI: 10.1016/j.foodchem.2010.12.026] [Citation(s) in RCA: 642] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 12/01/2010] [Accepted: 12/04/2010] [Indexed: 11/16/2022]
Abstract
Phenolic compounds, ubiquitous in plants, are of considerable interest and have received more and more attention in recent years due to their bioactive functions. Polyphenols are amongst the most desirable phytochemicals due to their antioxidant activity. These components are known as secondary plant metabolites and possess also antimicrobial, antiviral and anti-inflammatory properties along with their high antioxidant capacity. Many efforts have been made to provide a highly sensitive and selective analytical method for the determination and characterisation of polyphenols. The aim of this paper is to provide information on the most recent developments in the chemical investigation of polyphenols emphasising the extraction, separation and analysis of these compounds by chromatographic and spectral techniques.
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Affiliation(s)
- Ioana Ignat
- "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania.
| | - Irina Volf
- "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania
| | - Valentin I Popa
- "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania
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276
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Matcha K, Ghosh S. An asymmetric route to total synthesis of the furano lignan (+)-veraguensin. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.10.136] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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277
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Achyuthan KE, Achyuthan AM, Adams PD, Dirk SM, Harper JC, Simmons BA, Singh AK. Supramolecular self-assembled chaos: polyphenolic lignin's barrier to cost-effective lignocellulosic biofuels. MOLECULES (BASEL, SWITZERLAND) 2010; 15. [PMID: 21116223 PMCID: PMC6259226 DOI: 10.3390/molecules15128641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Phenylpropanoid metabolism yields a mixture of monolignols that undergo chaotic, non-enzymatic reactions such as free radical polymerization and spontaneous self-assembly in order to form the polyphenolic lignin which is a barrier to cost-effective lignocellulosic biofuels. Post-synthesis lignin integration into the plant cell wall is unclear, including how the hydrophobic lignin incorporates into the wall in an initially hydrophilic milieu. Self-assembly, self-organization and aggregation give rise to a complex, 3D network of lignin that displays randomly branched topology and fractal properties. Attempts at isolating lignin, analogous to archaeology, are instantly destructive and non-representative of in planta. Lack of plant ligninases or enzymes that hydrolyze specific bonds in lignin-carbohydrate complexes (LCCs) also frustrate a better grasp of lignin. Supramolecular self-assembly, nano-mechanical properties of lignin-lignin, lignin-polysaccharide interactions and association-dissociation kinetics affect biomass deconstruction and thereby cost-effective biofuels production.
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Affiliation(s)
- Komandoor Elayavalli Achyuthan
- Joint BioEnergy Institute (JBEI), Emeryville, CA 94550, USA
- Sandia National Laboratories, Albuquerque, NM 87185, USA; E-Mails: (S.M.D.); (J.C.H.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-505-284-8979; Fax: +1-505-844-1198
| | - Ann Mary Achyuthan
- Biology Department, Northern New Mexico College, Espanola, NM 87532, USA; E-Mail: (A.M.A.)
| | - Paul David Adams
- Joint BioEnergy Institute (JBEI), Emeryville, CA 94550, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; E-Mail:
| | - Shawn Matthew Dirk
- Sandia National Laboratories, Albuquerque, NM 87185, USA; E-Mails: (S.M.D.); (J.C.H.)
| | - Jason Carl Harper
- Sandia National Laboratories, Albuquerque, NM 87185, USA; E-Mails: (S.M.D.); (J.C.H.)
| | - Blake Alexander Simmons
- Joint BioEnergy Institute (JBEI), Emeryville, CA 94550, USA
- Sandia National Laboratories, Livermore, CA 94550, USA; E-Mails: (B.A.S.); (A.K.S.)
| | - Anup Kumar Singh
- Joint BioEnergy Institute (JBEI), Emeryville, CA 94550, USA
- Sandia National Laboratories, Livermore, CA 94550, USA; E-Mails: (B.A.S.); (A.K.S.)
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278
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Messiano GB, Wijeratne EMK, Lopes LMX, Gunatilaka AAL. Microbial transformations of aryltetralone and aryltetralin lignans by Cunninghamella echinulata and Beauveria bassiana. JOURNAL OF NATURAL PRODUCTS 2010; 73:1933-1937. [PMID: 20961092 DOI: 10.1021/np100607s] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Microbiological transformation of the aryltetralone lignan (-)-8'-epi-aristoligone (1) with Cunninghamella echinulata ATCC 10028B afforded two known natural lignans, (-)-holostyligone (3) and (-)-arisantetralone (4). Incubation of the aryltetralin lignan (-)-isogalbulin (2), obtained by chemical transformation of 1, with C. echinulata ATCC 10028B afforded the known lignan aryltetralol (5) and seven new metabolites, (-)-8-hydroxyisogalbulin (6), (-)-7-methoxyisogalbulin (7), (-)-4'-O-demethyl-8-hydroxyisogalbulin (8), (-)-7-methoxy-8-hydroxyisogalbulin (9), (-)-4'-O-demethyl-7-methoxyisogalbulin (10), (-)-4',5-O-didemethylcyclogalgravin (11), and (-)-4'-O-demethylcyclogalgravin (12). When 2 was subjected to biotransformation with Beauveria bassiana ATCC 7159, (-)-8-hydroxyisogalbulin (6) was the only isolable product. The structures of all new compounds were established by detailed analysis of their spectroscopic data.
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Affiliation(s)
- Gisele B Messiano
- SW Center for Natural Products Research and Commercialization, Office of Arid Lands Studies, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, United States
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279
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Supramolecular self-assembled chaos: polyphenolic lignin's barrier to cost-effective lignocellulosic biofuels. Molecules 2010; 15:8641-88. [PMID: 21116223 DOI: 10.3390/molecules15118641] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 11/22/2010] [Accepted: 11/25/2010] [Indexed: 11/17/2022] Open
Abstract
Phenylpropanoid metabolism yields a mixture of monolignols that undergo chaotic, non-enzymatic reactions such as free radical polymerization and spontaneous self-assembly in order to form the polyphenolic lignin which is a barrier to cost-effective lignocellulosic biofuels. Post-synthesis lignin integration into the plant cell wall is unclear, including how the hydrophobic lignin incorporates into the wall in an initially hydrophilic milieu. Self-assembly, self-organization and aggregation give rise to a complex, 3D network of lignin that displays randomly branched topology and fractal properties. Attempts at isolating lignin, analogous to archaeology, are instantly destructive and non-representative of in planta. Lack of plant ligninases or enzymes that hydrolyze specific bonds in lignin-carbohydrate complexes (LCCs) also frustrate a better grasp of lignin. Supramolecular self-assembly, nano-mechanical properties of lignin-lignin, lignin-polysaccharide interactions and association-dissociation kinetics affect biomass deconstruction and thereby cost-effective biofuels production.
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280
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Peterson J, Dwyer J, Adlercreutz H, Scalbert A, Jacques P, McCullough ML. Dietary lignans: physiology and potential for cardiovascular disease risk reduction. Nutr Rev 2010; 68:571-603. [PMID: 20883417 DOI: 10.1111/j.1753-4887.2010.00319.x] [Citation(s) in RCA: 186] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The present review of the literature on lignan physiology and lignan intervention and epidemiological studies was conducted to determine if lignans decrease the risks of cardiovascular disease in Western populations. Five intervention studies using flaxseed lignan supplements indicated beneficial associations with C-reactive protein, and a meta-analysis that included these studies also suggested lignans have a lowering effect on plasma total and low-density lipoprotein cholesterol. Three intervention studies using sesamin supplements indicated possible lipid- and blood pressure-lowering associations. Eleven human observational epidemiological studies examined dietary intakes of lignans in relation to cardiovascular disease risk. Five showed decreased risk with either increasing dietary intakes of lignans or increased levels of serum enterolactone (an enterolignan used as a biomarker of lignan intake), five studies were of borderline significance, and one was null. The associations between lignans and decreased risk of cardiovascular disease are promising, but they are yet not well established, perhaps due to low lignan intakes in habitual Western diets. At the higher doses used in intervention studies, associations were more evident.
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Affiliation(s)
- Julia Peterson
- Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging and Friedman School of Nutrition Science and Policy, Tufts University, Boston, Massachussets, USA
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281
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Xia Y, Wen Y. Synthesis of Threo-(±)-9,9-Dibenzoylsecoisolariciresinol and its Isomer. JOURNAL OF CHEMICAL RESEARCH 2010. [DOI: 10.3184/030823410x12869011963454] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The total synthesis of threo-(±)-9,9-dibenzoylsecoisolariciresinol and its isomer based on two Stobbe reactions as C–C bond-forming steps used a protected vanillin and diethyl; succinate to give the skeleton of lignan, followed by reduction to afford threo- and meso-(±)-secoisolariciresinol Both were treated with benzoyl chloride to obtain the natural product threo-(±)-9,9-dibenzoylsecoisolariciresinol and Its isomer meso-(±)-9,9-dibenzoylsecoisolariciresinol for the first time.
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Affiliation(s)
- Yamu Xia
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yanling Wen
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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282
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Das B, Kumar DN. Stereocontrolled construction of tetrasubstituted tetrahydrofurans: synthesis of 2,5-anhydro d-glucitol. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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283
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Masuda T, Akiyama J, Fujimoto A, Yamauchi S, Maekawa T, Sone Y. Antioxidation reaction mechanism studies of phenolic lignans, identification of antioxidation products of secoisolariciresinol from lipid oxidation. Food Chem 2010. [DOI: 10.1016/j.foodchem.2010.04.065] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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284
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Park C, Cho JY, Hwang BM, Hwang IS, Kim MR, Woo ER, Lee DG. Styraxjaponoside A and B, Antifungal Lignan Glycosides Isolated from Styrax japonica S. et Z. Biomol Ther (Seoul) 2010. [DOI: 10.4062/biomolther.2010.18.4.420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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285
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Schmidt TJ, Hemmati S, Klaes M, Konuklugil B, Mohagheghzadeh A, Ionkova I, Fuss E, Wilhelm Alfermann A. Lignans in flowering aerial parts of Linum species--chemodiversity in the light of systematics and phylogeny. PHYTOCHEMISTRY 2010; 71:1714-1728. [PMID: 20655554 DOI: 10.1016/j.phytochem.2010.06.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 06/22/2010] [Accepted: 06/23/2010] [Indexed: 05/29/2023]
Abstract
The aerial parts of 54 accessions representing 41 Linum species and four species of related genera were analysed for lignans by means of HPLC-ESI/MS-MS-UV/DAD. In total, 64 different lignans of the aryltetralin-, arylnaphthalene-, aryldihydronaphthalene-, dibenzylbutyrolactone-, and furofuran type were identified. According to their lignan profile, the Linum species can be divided in two groups accumulating as major lignan types either cyclolignans of the aryltetralin-series on one hand, or aryldihydronaphthalenes/arylnaphthalenes, on the other. Five of the investigated Linum species did not contain any detectable amounts of these lignans under the chosen analytical conditions. Furthermore, none of the lignans identified in Linum species was detectable in representatives of three related genera, namely, Reinwardtia (Linaceae, Linoideae), Hugonia and Indorouchera (Linaceae, Hugonioideae). The two species groups differing in the types of the dominating cyclolignans comprise representatives of the major taxonomic sections. Representatives of sections Syllinum, Cathartolinum and Linopsis accumulate mainly aryltetralins while those of sections Linum and Dasylinum were found to contain mainly aryldihydronaphthalenes/-naphthalenes. These phytochemical data correlate very well with a recent study on the molecular phylogeny of Linum/Linaceae, where a subdivision of Linum into two major clades comprising representatives of the two mentioned groups was found. Thus, the distribution of lignans apparently reflecting phylogenetic interrelations at the infrageneric level, a plausible scenario for the evolution of lignan biosynthesis in the genus Linum can now be presented.
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Affiliation(s)
- Thomas J Schmidt
- Institut für Pharmazeutische Biologie und Phytochemie IPBP, Westfälische Wilhelms-Universität Münster, Münster, Germany.
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286
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Alcaide B, Almendros P, Carrascosa R, Martínez del Campo T. Metal-Catalyzed Cycloetherification Reactions of β,γ- and γ,δ-Allendiols: Chemo-, Regio-, and Stereocontrol in the Synthesis of Oxacycles. Chemistry 2010; 16:13243-52. [DOI: 10.1002/chem.201001520] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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287
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Monte Neto RL, Sousa LMA, Dias CS, Barbosa Filho JM, Oliveira MR, Figueiredo RCBQ. Morphological and physiological changes in Leishmania promastigotes induced by yangambin, a lignan obtained from Ocotea duckei. Exp Parasitol 2010; 127:215-21. [PMID: 20691682 DOI: 10.1016/j.exppara.2010.07.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2010] [Revised: 07/13/2010] [Accepted: 07/30/2010] [Indexed: 10/19/2022]
Abstract
We have previously demonstrated that yangambin, a lignan obtained from Ocotea duckei Vattimo (Lauraceae), shows antileishmanial activity against promastigote forms of Leishmania chagasi and Leishmania amazonensis. The aim of this study was to determine the in vitro effects of yangambin against these parasites using electron and confocal microscopy. L. chagasi and L. amazonensis promastigotes were incubated respectively with 50 μg/mL and 65 μg/mL of pure yangambin and stained with acridine orange. Treated-parasites showed significant alterations in fluorescence emission pattern and cell morphology when compared with control cells, including the appearance of abnormal round-shaped cells, loss of cell motility, nuclear pyknosis, cytoplasm acidification and increased number of acidic vesicular organelles (AVOs), suggesting important physiological changes. Ultrastructural analysis of treated-promatigotes showed characteristics of cell death by apoptosis as well as by autophagy. The presence of parasites exhibiting multiples nuclei suggests that yangambin may also affect the microtubule dynamic in both Leishmania species. Taken together our results show that yangambin is a promising agent against Leishmania.
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Affiliation(s)
- Rubens L Monte Neto
- Laboratório de Tecnologia Farmacêutica, Universidade Federal da Paraíba, 58051-970 João Pessoa, Paraíba, Brazil
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288
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Alcaide B, Almendros P, Martínez del Campo T, Carrascosa R. Metal-Catalyzed Cycloisomerization and Tandem Oxycyclization/Hydroxylation of Alkynols: Synthesis of Nonfused, Spiranic and Fused Oxabicyclic β-Lactams. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000710] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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289
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Vijaya Raghava Reddy L, Venkat Reddy P, Mishra NN, Shukla PK, Yadav G, Srivastava R, Shaw AK. Synthesis and biological evaluation of glycal-derived novel tetrahydrofuran 1,2,3-triazoles by ‘click’ chemistry. Carbohydr Res 2010; 345:1515-21. [DOI: 10.1016/j.carres.2010.03.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 03/20/2010] [Accepted: 03/24/2010] [Indexed: 10/19/2022]
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290
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Pandey G, Luckorse S, Budakoti A, Puranik VG. Synthesis of optically pure 2,3,4-trisubstituted tetrahydrofurans via a two-step sequential Michael-Evans aldol cyclization strategy: total synthesis of (+)-magnolone. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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291
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Ricci A, Fiorentino A, Piccolella S, D'Abrosca B, Pacifico S, Monaco P. Structural discrimination of isomeric tetrahydrofuran lignan glucosides by tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2010; 24:979-985. [PMID: 20209663 DOI: 10.1002/rcm.4472] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Due to the possible role in human health, the number of analytical studies on lignans aimed at their quali- and quantitative analysis in plant extracts, biological fluids and foods is continuously increasing. However, helpful systematic mass spectrometric investigations on these compounds are few and rather limited to specific lignan sub-classes. To increase the comprehension of the previously outlined picture of the gas-phase properties of furofuran lignans, we extended the study to tetrahydrofuran lignans and here we reported the collision-activated dissociation (CAD) fragmentation patterns of the alkali metal cation adducts, [M+Alk](+), and [M-H](-) ions of three isomeric tetrahydrofuran lignans, (+)-8'-hydroxylariciresinol 4'-O-beta-D-glucopyranoside (1), (+)-7'-hydroxylariciresinol 7'-O-beta-D-glucopyranoside (2) and 4-O-beta-D-glucopyranosyloxy-3,3'-dimethoxy-7,9'-epoxylignan-5',8',9-triol (3) investigated by electrospray ionization triple quadrupole mass spectrometry (ESI-TQMS). Hydrogen/deuterium (H/D) solution exchange experiments, allowing the selective H/D exchange of all the acidic hydrogen atoms, proved to be a very effective tool to obtain information on the nature of fragments generated during TQ/CAD processes. The [M+Na](+) CAD mass spectra of the three isomeric tetrahydrofurans revealed four different pathways involving the loss of the glucose moiety, which allowed the assignment of the glycosylation site. In the negative ion mode, the main fragmentation channel of the [M-H](-) ions of O-glucosylated lignans at the phenolic oxygen atoms is represented by the loss of 162 Da. When the sugar is bound to a benzylic OH group the loss of the sugar as a 180 Da unit occurs eventually following the loss of a water molecule involving both the C(9)H(2)OH chain and the sugar.
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Affiliation(s)
- Andreina Ricci
- Dipartimento di Scienze della Vita, Seconda Università di Napoli, via Vivaldi 43, 81100 Caserta, Italy.
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292
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Enders D, Wang C, Greb A. Asymmetric Synthesis of 2,3,4-Trisubstituted Functionalised Tetrahydrofurans via an Organocatalytic Michael Addition as Key Step. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900879] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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293
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Updated biotechnological approaches developed for 2,7′-cyclolignan production. Biotechnol Appl Biochem 2010; 55:139-53. [DOI: 10.1042/ba20090253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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294
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Cui HS, Sok DE, Min BS, Kim MR. Protective action of 9-hydroxypinoresinol against oxidative damage in brain of mice challenged with kainic acid. J Pharm Pharmacol 2010; 59:521-8. [PMID: 17430635 DOI: 10.1211/jpp.59.4.0006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Abstract
The neuroprotective effect of 9-hydroxypinoresinol was examined in mice challenged with kainic acid (KA), a potent central nervous system excitotoxin. For this purpose, mice were administered intraperitoneally with 9-hydroxypinoresinol before KA injection. A remarkable neuroprotective effect was observed with a single dose of 9-hydroxypinoresinol (30 mg kg−1) 24 h before KA challenge. Furthermore, 9-hydroxypinoresinol (20 mg kg−1) administered for 3 days before KA challenge reduced the mortality (60%) induced by KA to zero, and alleviated behavioural signs of KA neurotoxicity. Additionally, pretreatment with 9-hydroxypinoresinol (20 mg kg−1) prevented the decrease in the levels of total glutathione (GSH) and thiobarbituric acid reactive substances (P <0.05). GSH peroxidase activity in brain tissue was restored to control levels, although GSH reductase activity and GSH S-transferase activity were not affected. Such a protective action was also observed even with a lower dose (10 mg kg−1) of 9-hydroxypinoresinol administered for 3 days, albeit to a lesser extent. From the results, it is proposed that 9-hydroxypinoresinol exerts a potent neuroprotective effect mainly by preventing oxidative stress in brain tissue of mice challenged with KA.
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Affiliation(s)
- Hui Song Cui
- College of Pharmacy, Chungnam National University, Gung-dong 220, Yuseong-gu, Daejeon 305-764, Korea
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295
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León-Díaz R, Meckes M, Said-Fernández S, Molina-Salinas GM, Vargas-Villarreal J, Torres J, Luna-Herrera J, Jiménez-Arellanes A. Antimycobacterial neolignans isolated from Aristolochia taliscana. Mem Inst Oswaldo Cruz 2010; 105:45-51. [DOI: 10.1590/s0074-02762010000100006] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Accepted: 08/04/2009] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - Mariana Meckes
- Unidad Investigación Médica en Farmacología de Productos Naturales
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296
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McConville M, Ruan J, Blacker J, Xiao J. Synthesis of oxygen heterocycles by regioselective Heck reaction. Org Biomol Chem 2010; 8:5614-9. [PMID: 20927481 DOI: 10.1039/c0ob00508h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Matthew McConville
- Liverpool Centre for Materials and Catalysis, Department of Chemistry, University of Liverpool, UK
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297
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He H, Dai LX, You SL. Intramolecular Michael addition reaction for the synthesis of benzylbutyrolactones. Org Biomol Chem 2010; 8:3207-10. [DOI: 10.1039/b924770j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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298
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Park C, Woo ER, Lee DG. Antifungal effect with apoptotic mechanism(s) of Styraxjaponoside C. Biochem Biophys Res Commun 2009; 390:1255-9. [DOI: 10.1016/j.bbrc.2009.10.131] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Accepted: 10/26/2009] [Indexed: 10/20/2022]
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299
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Gautam R, Jachak SM. Recent developments in anti-inflammatory natural products. Med Res Rev 2009; 29:767-820. [DOI: 10.1002/med.20156] [Citation(s) in RCA: 301] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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300
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Pan JY, Chen SL, Yang MH, Wu J, Sinkkonen J, Zou K. An update on lignans: natural products and synthesis. Nat Prod Rep 2009; 26:1251-92. [PMID: 19779640 DOI: 10.1039/b910940d] [Citation(s) in RCA: 178] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jian-Yu Pan
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing, 100094, China
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