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Sansone A, Melchiorre M, Chatgilialoglu C, Ferreri C. Hexadecenoic fatty acid isomers: a chemical biology approach for human plasma biomarker development. Chem Res Toxicol 2013; 26:1703-9. [PMID: 24083821 DOI: 10.1021/tx400287u] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hexadecenoic fatty acids are monounsaturated lipid components, which are interesting targets of plasma lipidomic studies and biomarker development. The main positional isomers, palmitoleic (9-cis-16:1) and sapienic acids (6-cis-16:1), have an endogenous origin from palmitic acid, the former being recognized as a component of adipose tissue with signaling activity, whereas the latter is mainly reported as a component of sebum. The trans 16:1 isomers are attributed so far to dietary sources of industrial and dairy fats, whereas the endogenous formation due to the free radical-mediated isomerization can represent an emerging, yet unexplored, pathway connected to cellular stress. Herein, we report a chemical biology approach for the development of hexadecenoic fatty acids as plasma biomarkers, with the first synthesis of 6-trans-16:1 and the efficient analytical setup with unambiguous assignment of 16:1 double bond position and geometry, which was applied to human commercial LDL and plasma cholesteryl esters. Sapienic acid was identified together with its geometrical trans isomer for the first time. The quantitation of hexadecenoic fatty acid isomers evidenced their different levels in the two lipid classes and LDL fractions, making us foresee interesting applications to the metabolic evaluation of fatty acid pathways. These findings open new perspectives for plasma lipidomics involving monounsaturated fatty acids, highlighting future developments for their evaluation in different health conditions including free radical stress.
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Affiliation(s)
- Anna Sansone
- ISOF, Consiglio Nazionale delle Ricerche , Via P. Gobetti 101, 40129 Bologna, Italy
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52
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Chatgilialoglu C, Ferreri C, Melchiorre M, Sansone A, Torreggiani A. Lipid geometrical isomerism: from chemistry to biology and diagnostics. Chem Rev 2013; 114:255-84. [PMID: 24050531 DOI: 10.1021/cr4002287] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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53
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Silva L, Garlet Q, Benovit S, Dolci G, Mallmann C, Bürger M, Baldisserotto B, Longhi S, Heinzmann B. Sedative and anesthetic activities of the essential oils of Hyptis mutabilis (Rich.) Briq. and their isolated components in silver catfish (Rhamdia quelen). Braz J Med Biol Res 2013; 46:771-9. [PMID: 24068193 PMCID: PMC3854430 DOI: 10.1590/1414-431x20133013] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 07/01/2013] [Indexed: 01/28/2023] Open
Abstract
This study evaluated the sedative and anesthetic effects of the essential oils (EO) of Hyptis mutabilis (Rich.) Briq. and their isolated components on silver catfish (Rhamdia quelen). Quantitative chemical differences between the EOs obtained from leaves and inflorescences were verified, and a new chemotype rich in globulol was described. Although there were no significant differences in the time of induction for sedation and anesthesia between the EOs, only the leaf EO at 344 mg/L anesthetized all fish without side effects. Fractionation of the leaf EO was carried out by column chromatography. The isolated compounds [(+)-1-terpinen-4-ol and (-)-globulol] showed different activity from that detected for the leaf EO in proportional concentrations and similar sedation to a eugenol control at 10 mg/L. However, fish exposed to 1-terpinen-4-ol (3 and 10 mg/L) did not remain sedated for 30 min. Anesthesia was obtained with 83-190 mg/L globulol, but animals showed loss of mucus during induction and mortality at these concentrations. Synergism of the depressor effects was detected with the association of globulol and benzodiazepine (BDZ), compared with either drug alone. Fish exposed to BDZ or globulol+BDZ association showed faster recovery from anesthesia in water containing flumazenil, but the same did not occur with globulol. In conclusion, the use of globulol in aquaculture procedures should be considered only at sedative concentrations of 10 and 20 mg/L, and its mechanism of action seems not to involve the GABAA-BDZ system.
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Affiliation(s)
- L.L. Silva
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
| | - Q.I. Garlet
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
| | - S.C. Benovit
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
| | - G. Dolci
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
| | - C.A. Mallmann
- Departamento de Medicina Veterinária Preventiva, Universidade
Federal de Santa Maria, Santa Maria, RS, Brasil
| | - M.E. Bürger
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
- Departamento de Fisiologia e Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
| | - B. Baldisserotto
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
- Departamento de Fisiologia e Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
| | - S.J. Longhi
- Departamento de Ciências Florestais, Unversidade Federal de
Santa Maria, Santa Maria, RS, Brasil
| | - B.M. Heinzmann
- Programa de Pós-Graduação em Farmacologia, Universidade Federal
de Santa Maria, Santa Maria, RS, Brasil
- Departamento de Farmácia Industrial, Universidade Federal de
Santa Maria, Santa Maria, RS, Brasil
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54
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2013. [DOI: 10.1016/s0040-4020(13)01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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55
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Aponte JC, Dillon JT, Huang Y. The unique liquid chromatographic properties of Group 11 transition metals for the separation of unsaturated organic compounds. J Sep Sci 2013; 36:2563-70. [DOI: 10.1002/jssc.201300457] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 05/21/2013] [Accepted: 05/21/2013] [Indexed: 11/08/2022]
Affiliation(s)
- José C. Aponte
- Department of Geological Sciences; Brown University; Providence RI USA
| | - James T. Dillon
- Department of Chemistry; Brown University; Providence RI USA
| | - Yongsong Huang
- Department of Geological Sciences; Brown University; Providence RI USA
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56
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Tabanca N, Wang M, Avonto C, Chittiboyina AG, Parcher JF, Carroll JF, Kramer M, Khan IA. Bioactivity-guided investigation of geranium essential oils as natural tick repellents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4101-4107. [PMID: 23528036 DOI: 10.1021/jf400246a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The evaluation of 10 essential oils of geranium, Pelargonium graveolens (Geraniaceae), were all shown to have repellent activity against nymphs of the medically important lone star tick, Amblyomma americanum (L.). The biological tests were carried out using a vertical filter paper bioassay, where ticks must cross an area of the paper treated with repellent to approach host stimuli. One of the essential oil samples that repelled >90% of the ticks at 0.103 mg/cm(2) was selected for further fractionation studies. The sesquiterpene alcohol, (-)-10-epi-γ-eudesmol, was isolated and identified by spectral methods. (-)-10-epi-γ-Eudesmol at 0.103 and 0.052 mg of compound/cm(2) of filter paper repelled 90 and 73.3% of the ticks, respectively. (-)-10-epi-γ-Eudesmol exhibited similar repellency to the reference standard N,N-diethyl-meta-toluamide (DEET) at concentrations of ≥0.052 mg of compound/cm(2) of filter paper, with (-)-10-epi-γ-eudesmol losing much of its repellency at 0.026 mg of compound/cm(2) and DEET at 0.013 mg of compound/cm(2). Isomenthone and linalool did not repel ticks at the concentrations tested. Most repellents are marketed with much higher concentrations of active ingredient than the concentrations of the natural repellents tested herein; therefore, effective compounds, such as (-)-10-epi-γ-eudesmol, found in geranium oil, have the potential for commercial development.
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Affiliation(s)
- Nurhayat Tabanca
- National Center for Natural Products Research (NCNPR), and ∥Department of Pharmacognosy, School of Pharmacy, University of Mississippi , University, Mississippi 38677, United States
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57
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Mowat J, Senior J, Kang B, Britton R. Scalable synthesis of the pink gypsy moth Lymantria mathura sex pheromone (–)-mathuralure. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0376] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mathuralure (1) is the major sex pheromone component of the pink gypsy moth Lymantria mathura, a potentially devastating invasive species to North America. To support population monitoring of this moth, a gram-scale synthesis of (–)-mathuralure (1) was developed. This process relies on coupling an alkynyl lithium species with a chloroepoxide and provides access to the natural product in a 10% yield over 10 steps.
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Affiliation(s)
- Jeffrey Mowat
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5S 1S6, Canada
| | - James Senior
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5S 1S6, Canada
| | - Baldip Kang
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5S 1S6, Canada
| | - Robert Britton
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5S 1S6, Canada
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58
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Herbert MB, Marx VM, Pederson RL, Grubbs RH. Concise syntheses of insect pheromones using Z-selective cross metathesis. Angew Chem Int Ed Engl 2013; 52:310-4. [PMID: 23055437 PMCID: PMC3789658 DOI: 10.1002/anie.201206079] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Indexed: 11/06/2022]
Abstract
Very short synthetic routes to nine cis-olefin-containing pheromones containing a variety of functionality, including an unconjugated (E,Z) diene, are reported. These lepidopteran pheromones are used extensively for pest control, and were easily prepared using ruthenium-based Z-selective cross metathesis, highlighting the advantages of this method over less efficient ways to form Z olefins.
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Affiliation(s)
- Myles B. Herbert
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125 (USA)
| | - Vanessa M. Marx
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125 (USA)
| | | | - Robert H. Grubbs
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125 (USA)
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59
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Arens J, Engels B, Klopries S, Jennewein S, Ottmann C, Schulz F. Exploration of biosynthetic access to the shared precursor of the fusicoccane diterpenoid family. Chem Commun (Camb) 2013; 49:4337-9. [DOI: 10.1039/c2cc37154e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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60
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Oger C, Balas L, Durand T, Galano JM. Are alkyne reductions chemo-, regio-, and stereoselective enough to provide pure (Z)-olefins in polyfunctionalized bioactive molecules? Chem Rev 2012. [PMID: 23194255 DOI: 10.1021/cr3001753] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Camille Oger
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247, Université Montpellier 1, Faculté de Pharmacie, 15 av. Charles Flahault, Bât. D, 34093 Montpellier Cedex 05, France
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61
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Herbert MB, Marx VM, Pederson RL, Grubbs RH. Concise Syntheses of Insect Pheromones UsingZ-Selective Cross Metathesis. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206079] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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62
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Chavan SP, Garai S, Kalkote UR. A highly diastereoselective total synthesis of (±)-heritonin and (±)-heritol. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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63
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Dillon JT, Aponte JC, Tsai YJ, Huang Y. Thin layer chromatography in the separation of unsaturated organic compounds using silver-thiolate chromatographic material. J Chromatogr A 2012; 1251:240-243. [DOI: 10.1016/j.chroma.2012.06.042] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Revised: 06/13/2012] [Accepted: 06/14/2012] [Indexed: 11/29/2022]
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64
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Aponte JC, Dillon JT, Tarozo R, Huang Y. Separation of unsaturated organic compounds using silver–thiolate chromatographic material. J Chromatogr A 2012; 1240:83-9. [DOI: 10.1016/j.chroma.2012.03.082] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 03/23/2012] [Accepted: 03/26/2012] [Indexed: 10/28/2022]
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65
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Mak JYW, Williams CM. Total Synthesis of (-)-Neovibsanin G and (-)-14-epi-Neovibsanin G: Towards the Synthesis of 15-O-Methylneovibsanin F and 14-epi-15-O-Methylneovibsanin F. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101796] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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66
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Ferreri C, Grabovskiy SA, Aoun M, Melchiorre M, Kabal’nova N, Feillet-Coudray C, Fouret G, Coudray C, Chatgilialoglu C. Trans Fatty Acids: Chemical Synthesis of Eicosapentaenoic Acid Isomers and Detection in Rats Fed a Deodorized Fish Oil Diet. Chem Res Toxicol 2012; 25:687-94. [DOI: 10.1021/tx200467c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carla Ferreri
- ISOF, Consiglio Nazionale delle
Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
| | - Stanislav A. Grabovskiy
- ISOF, Consiglio Nazionale delle
Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
- Institute of Organic Chemistry, Ufa Research Center of RAS, 71 prospekt Oktyabrya,
450054 Ufa, Russia
| | - Manar Aoun
- INRA UMR
866, Dynamique Musculaire
et Métabolisme, INRA, 2 place Pierre Viala, Université
Montpellier 1, and Université Montpellier 2, 34060 Montpellier,
France
| | - Michele Melchiorre
- ISOF, Consiglio Nazionale delle
Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
| | - Natalia Kabal’nova
- Institute of Organic Chemistry, Ufa Research Center of RAS, 71 prospekt Oktyabrya,
450054 Ufa, Russia
| | - Christine Feillet-Coudray
- INRA UMR
866, Dynamique Musculaire
et Métabolisme, INRA, 2 place Pierre Viala, Université
Montpellier 1, and Université Montpellier 2, 34060 Montpellier,
France
| | - Gilles Fouret
- INRA UMR
866, Dynamique Musculaire
et Métabolisme, INRA, 2 place Pierre Viala, Université
Montpellier 1, and Université Montpellier 2, 34060 Montpellier,
France
| | - Charles Coudray
- INRA UMR
866, Dynamique Musculaire
et Métabolisme, INRA, 2 place Pierre Viala, Université
Montpellier 1, and Université Montpellier 2, 34060 Montpellier,
France
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67
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Daramwar PP, Srivastava PL, Priyadarshini B, Thulasiram HV. Preparative separation of α- and β-santalenes and (Z)-α- and (Z)-β-santalols using silver nitrate-impregnated silica gel medium pressure liquid chromatography and analysis of sandalwood oil. Analyst 2012; 137:4564-70. [DOI: 10.1039/c2an35575b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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68
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Donald WA, O'Hair RAJ. Shapeshifting: Ligation by 1,4-cyclohexadiene induces a structural change in Ag5+. Dalton Trans 2012; 41:3185-93. [DOI: 10.1039/c2dt11876a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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69
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Mak JYW, Williams CM. Enantioselective total synthesis of (−)-neovibsanin G and (−)-14-epi-neovibsanin G. Chem Commun (Camb) 2012; 48:287-9. [DOI: 10.1039/c1cc15995j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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70
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Edwards W, Smith DK. Cation-responsive silver-selective organogel—exploiting silver–alkene interactions in the gel-phase. Chem Commun (Camb) 2012; 48:2767-9. [DOI: 10.1039/c2cc17854k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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71
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Vergara-Barberán M, Escrig-Doménech A, Lerma-García MJ, Simó-Alfonso EF, Herrero-Martínez JM. Capillary electrophoresis of free fatty acids by indirect ultraviolet detection: application to the classification of vegetable oils according to their botanical origin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:10775-10780. [PMID: 21905655 DOI: 10.1021/jf202798c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A method for the determination of fatty acids in vegetable oils by capillary electrophoresis with indirect UV-vis detection has been developed. The separation of fatty acids was optimized in terms of Brij surfactant nature and concentration and organic modifier (2-propanol) percentage. The optimal background electrolyte consisted of 10 mM p-hydroxybenzoate, 5 mM Tris at pH 8.8, 80 mM Brij 98, 40% acetonitrile, and 10% 2-propanol. Under these conditions, vegetable oils from five botanical origins (avocado, corn, extra virgin olive, hazelnut, and soybean) were analyzed and the fatty acid contents established. Linear discriminant analysis (LDA) models were constructed using fatty acid peak areas as predictors. An excellent resolution among all category pairs was obtained, and all samples were correctly classified with assignment probabilities of >95%.
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Affiliation(s)
- María Vergara-Barberán
- Departamento de Química Analítica, Universidad de Valencia, C. Doctor Moliner 50, E-46100 Burjassot, Valencia, Spain
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72
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O'Doherty I, Yim JJ, Schmelz EA, Schroeder FC. Synthesis of caeliferins, elicitors of plant immune responses: accessing lipophilic natural products via cross metathesis. Org Lett 2011; 13:5900-3. [PMID: 21992613 DOI: 10.1021/ol202541b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cross metathesis (CM)-based synthesis of the caeliferins, a family of sulfooxy fatty acids that elicit plant immune responses, is reported. Unexpectedly, detailed NMR spectroscopic and mass spectrometric analyses of CM reaction mixtures revealed extensive isomerization and homologation of starting materials and products. It is shown that the degree of isomerization and homologation in CM strongly correlates with substrate chain length and lipophilicity. Side-product suppression requires appropriate catalyst selection and use of 1,4-benzoquinone as a hydride scavenger.
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Affiliation(s)
- Inish O'Doherty
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
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73
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NOLTE THIES, ANDERSSON JANT. Capillary Electrophoretic Methods for the Separation of Polycyclic Aromatic Compounds. Polycycl Aromat Compd 2011. [DOI: 10.1080/10406638.2011.604664] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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74
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Melchiorre M, Torreggiani A, Chatgilialoglu C, Ferreri C. Lipid markers of "geometrical" radical stress: synthesis of monotrans cholesteryl ester isomers and detection in human plasma. J Am Chem Soc 2011; 133:15184-90. [PMID: 21851063 DOI: 10.1021/ja205903h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Heteroatom-centered free radicals are able to transform cis unsaturated fatty acids to the thermodynamically more stable, but unnatural, trans configuration. The "geometrical" radical stress can be estimated in biological samples using trans fatty acid isomers as lipid markers. Regioselectivity is an important feature of the "geometrical" radical stress, because the supramolecular organization of the polyunsaturated fatty acid moieties of phospholipids can lead to preferential monotrans isomer formation. The regioisomer recognition is a crucial step, which is helped by appropriate molecular libraries available through radical-based synthetic methodologies. Cholesteryl linoleate and arachidonate esters are interesting targets for their biochemical connection with membrane phospholipid turnover and their well-known roles in cardiovascular health. The synthesis of monotrans isomers of PUFA cholesteryl esters was achieved by a thiyl radical-catalyzed cis-trans isomerization. Valuable NMR, IR, and Raman spectroscopic data have been collected for promising application in metabolomics and lipidomics. The identification of monotrans cholesteryl ester isomers was carried out in human plasma by GC, Raman, and IR analyses, demonstrating for the first time the presence of specific regiosiomers connected to free radical stress. This work helps to highlight the chemical biology approach for the access to molecular libraries applicable to biomarker development, and the cis-trans isomerization as a relevant process to be integrated in the puzzling scenario of free radical-mediated lipid modifications.
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75
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Total Synthesis of (+)-7,11-Helianane and (+)-5-Chloro-7,11-helianane through Stereoselective Aromatic Claisen Rearrangement. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100706] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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76
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Burgess J, Steel PJ. Is the silver–alkene interaction a useful new supramolecular synthon? Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.01.024] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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77
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2011. [DOI: 10.1016/s0040-4020(11)00770-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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78
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Royzen M, Taylor MT, Deangelis A, Fox JM. Total Synthesis of Hyacinthacine A2: Stereocontrolled 5-aza-cyclooctene Photoisomerization and Transannular Hydroamination with Planar-to-Point Chirality Transfer. Chem Sci 2011; 2:2162-2165. [PMID: 23125911 DOI: 10.1039/c1sc00442e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The total synthesis of hyacinthacine A2 is reported via a novel transannular hydroamination in which planar chirality of a 5-aza-trans-cyclooctene precursor is transferred to point chirality in the product. Key to the success of this strategy was the development of a method for establishing absolute planar chirality via stereocontrolled photoisomerization of a 5-aza-cis-cyclooctene. This was accomplished by constructing a 5-aza-cis-cyclooctene precursor with a trans-fused acetonide. The improved diastereoselectivity observed upon photoisomerization of this derivative is attributed to the conformational strain of the eight-membered ring in the minor diastereomer.
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79
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2010. [DOI: 10.1016/s0040-4020(10)01735-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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80
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Batista R, García PA, Castro MÁ, Del Corral JMM, Feliciano AS, Oliveira ABD. iso-Kaurenoic acid from Wedelia paludosa D.C. AN ACAD BRAS CIENC 2010; 82:823-31. [DOI: 10.1590/s0001-37652010000400004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Accepted: 06/07/2010] [Indexed: 11/22/2022] Open
Abstract
A recent reinvestigation of aerial parts of Wedelia paludosa D.C. is described and reports, for the first time, the isolation of iso-kaurenoic acid from this species.
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81
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Bauder C. Asymmetric Synthesis of the C1-C13 Fragment of the Marine Metabolite Bistramide K. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000881] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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82
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Affiliation(s)
- Patrick J. Gross
- Institut für Organische Chemie, Karlsruher Institut für Technologie (KIT), Fritz‐Haber‐Weg 6, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8581
| | - Stefan Bräse
- Institut für Organische Chemie, Karlsruher Institut für Technologie (KIT), Fritz‐Haber‐Weg 6, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8581
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83
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Faraldos JA, O'Maille PE, Dellas N, Noel JP, Coates RM. Bisabolyl-derived sesquiterpenes from tobacco 5-epi-aristolochene synthase-catalyzed cyclization of (2Z,6E)-farnesyl diphosphate. J Am Chem Soc 2010; 132:4281-9. [PMID: 20201526 DOI: 10.1021/ja909886q] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the structures and stereochemistry of seven bisabolyl-derived sesquiterpenes arising from an unprecedented 1,6-cyclization (cisoid pathway) efficiently catalyzed by tobacco 5-epi-aristolochene synthase (TEAS). The use of (2Z,6E)-farnesyl diphosphate as an alternate substrate for recombinant TEAS resulted in a robust enzymatic cyclization to an array of products derived exclusively (>/=99.5%) from the cisoid pathway, whereas these same products account for ca. 2.5% of the total hydrocarbons obtained using (2E,6E)-farnesyl diphosphate. Chromatographic fractionations of extracts from preparative incubations with the 2Z,6E substrate afforded, in addition to the acyclic allylic alcohols (2Z,6E)-farnesol (6.7%) and nerolidol (3.6%), five cyclic sesquiterpene hydrocarbons and two cyclic sesquiterpene alcohols: (+)-2-epi-prezizaene (44%), (-)-alpha-cedrene (21.5%), (R)-(-)-beta-curcumene (15.5%), alpha-acoradiene (3.9%), 4-epi-alpha-acoradiene (1.3%), and equal amounts of alpha-bisabolol (1.8%) and epi-alpha-bisalolol (1.8%). The structures, stereochemistry, and enantiopurities were established by comprehensive spectroscopic analyses, optical rotations, chemical correlations with known sesquiterpenes, comparisons with literature data, and GC analyses. The major product, (+)-2-epi-prezizaene, is structurally related to the naturally occurring tricyclic alcohol, jinkohol (2-epi-prezizaan-7beta-ol). Cisoid cyclization pathways are proposed by which all five sesquiterpene hydrocarbons are derived from a common (7R)-beta-bisabolyl(+)/pyrophosphate(-) ion pair intermediate. The implications of the "cisoid" catalytic activity of TEAS are discussed.
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Affiliation(s)
- Juan A Faraldos
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA
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84
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Tsipis AC. Unveiling the Nature of Binding Interactions of Acetylene and Ethylene with Triangular Coinage Metal Clusters: A DFT Computational Study. Organometallics 2009. [DOI: 10.1021/om900781j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Athanassios C. Tsipis
- Laboratory of Inorganic and General Chemistry, Department of Chemistry, University of Ioannina, 451 10 Ioannina, Greece
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85
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Angawi RF, Calcinai B, Cerrano C, Dien HA, Fattorusso E, Scala F, Taglialatela-Scafati O. Dehydroconicasterol and aurantoic acid, a chlorinated polyene derivative, from the Indonesian sponge Theonella swinhoei. JOURNAL OF NATURAL PRODUCTS 2009; 72:2195-2198. [PMID: 19961178 DOI: 10.1021/np900669d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The chlorinated polyene aurantoic acid (1) and the 4-methylene sterol dehydroconicasterol (2) were isolated from the Indonesian sponge Theonella swinhoei, and their structures were elucidated by interpretation of spectroscopic data. Aurantoic acid is a unique member in the class of naturally occurring conjugated polyene derivatives, while dehydroconicasterol is the likely biogenetic precursor of the major Theonella 4-methylene sterols.
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Affiliation(s)
- Rihab F Angawi
- Dipartimento di Chimica delle Sostanze Naturali, Universita di Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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86
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Russo V, Allen J, Ball ZT. Synthesis and isotopic labeling of a naturally occurring alkyl-thiadiamondoid. Chem Commun (Camb) 2009:595-6. [DOI: 10.1039/b818399f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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87
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Ferreri C, Chatgilialoglu C. Membrane lipidomics and the geometry of unsaturated fatty acids from biomimetic models to biological consequences. Methods Mol Biol 2009; 579:391-411. [PMID: 19763487 DOI: 10.1007/978-1-60761-322-0_20] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In the last decades, free radical processes delineated an interdisciplinary field linking chemistry to biology and medicine. Free radical mechanisms became of importance as molecular basis of physiological and pathological conditions. Lipids, in particular, unsaturated fatty acids, are susceptible of free radical attack. The reactivity of the double bond toward free radicals is well known, in particular the reversible addition of radical species to this functionality determines the cis-trans double bond isomerization. Since the prevalent geometry displayed by unsaturated fatty acids in eukaryotes is cis, the occurrence of the cis-trans isomerization by free radicals corresponds to the loss of an important structural information linked to biological activity. The formation of trans isomers can have important meaning and consequences connected to radical stress. Free radical isomerization of membrane fatty acids has been the subject of research coupling the top-down approach by model studies, such as biomimetic chemistry in liposomes, with the bottom-up approach dealing with the examination of cell membrane lipidome in living systems under several physiopathological conditions. Methodologies and molecular libraries have been settled, for both liposome experiments and the examination of the radical stress in biological membranes. This chapter will give an overview of the current procedures used for liposome models and the cis-trans isomerization experiments, in order to build-up a library of trans geometrical fatty acid isomers.
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Affiliation(s)
- Carla Ferreri
- ISOF-BioFree Radicals, Consiglio Nazionale delle Riceriche, Bologna, Italy
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88
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Abstract
Seven abietane diterpenoids were isolated from the roots of Hyptis verticillata (Labiatae). One is a novel natural product, 7-acetoxy-16-benzoxy-12-hydroxyabieta-8,12-diene-11,14-dione (1), while the other six known compounds are 11, 14 dihydroxy-12-methoxyabieta-8, 11, 13-triene-7-one (2), 11, 14-dihydroxy-12-methoxy-18(4→3βH) abeo-abieta-4(19),8, 11, 13-tetraene-7-one (3), 7-acetoxy-12-methoxyabieta-8,12-diene-11, 14-dione (4), royleanone (5), 7,6-dehydroroyleanone (6) and 7-acetoxyhorminone (7). All structures were elucidated by spectroscopic and mass spectrometric means.
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Affiliation(s)
- Roy B. R. Porter
- Department of Chemistry, University of the West Indies, Mona, Kingston 7, Jamaica
| | - Duanne A. C. Biggs
- Department of Chemistry, University of the West Indies, Mona, Kingston 7, Jamaica
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89
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Thompson CM, Quinn CA, Hergenrother PJ. Total Synthesis and Cytoprotective Properties of Dykellic Acid. J Med Chem 2008; 52:117-25. [DOI: 10.1021/jm801169s] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Christina M. Thompson
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, Illinois 61801
| | - Catherine A. Quinn
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, Illinois 61801
| | - Paul J. Hergenrother
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, Illinois 61801
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90
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Ferreri C, Anagnostopoulos D, Lykakis IN, Chatgilialoglu C, Siafaka-Kapadai A. Synthesis of all-trans anandamide: A substrate for fatty acid amide hydrolase with dual effects on rabbit platelet activation. Bioorg Med Chem 2008; 16:8359-65. [DOI: 10.1016/j.bmc.2008.08.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Revised: 08/11/2008] [Accepted: 08/22/2008] [Indexed: 01/31/2023]
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91
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Tetrahedron reports on organic chemistry. Tetrahedron 2008. [DOI: 10.1016/s0040-4020(08)00897-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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92
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Stereochemical evaluation of sesquiterpene quinones from two sponges of the genus Dactylospongia and the implication for enantioselective processes in marine terpene biosynthesis. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.091] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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93
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Photochemical and thermal behavior of light-driven unidirectional molecular motor with long alkyl chains. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.03.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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94
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Affiliation(s)
- H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://www.uta.edu/chemistry/html/dias.html
| | - Jiang Wu
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://www.uta.edu/chemistry/html/dias.html
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95
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Schulz S, Estrada C, Yildizhan S, Boppré M, Gilbert LE. An antiaphrodisiac in Heliconius melpomene butterflies. J Chem Ecol 2007; 34:82-93. [PMID: 18080165 DOI: 10.1007/s10886-007-9393-z] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Revised: 09/19/2007] [Accepted: 10/29/2007] [Indexed: 11/29/2022]
Abstract
Gilbert (1976) suggested that male-contributed odors of mated females of Heliconius erato could enforce monogamy. We investigated the pheromone system of a relative, Heliconius melpomene, using chemical analysis, behavioral experiments, and feeding experiments with labeled biosynthetic pheromone precursors. The abdominal scent glands of males contained a complex odor bouquet, consisting of the volatile compound (E)-beta-ocimene together with some trace components and a less volatile matrix made up predominately of esters of common C16- and C18-fatty acids with the alcohols ethanol, 2-propanol, 1-butanol, isobutanol, 1-hexanol, and (Z)-3-hexenol. This bouquet is formed during the first days after eclosion, and transferred during copulation to the females. Virgin female scent glands do not contain these compounds. The transfer of ocimene and the esters was shown by analysis of butterflies of both sexes before and after copulation. Additional proof was obtained by males fed with labeled D-13C6- glucose. They produced 13C-labeled ocimene and transferred it to females during copulation. Behavioral tests with ocimene applied to unmated females showed its repellency to males. The esters did not show such activity, but they moderated the evaporation rate of ocimene. Our investigation showed that beta-ocimene is an antiaphrodisiac pheromone of H. melpomene.
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Affiliation(s)
- Stefan Schulz
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
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96
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Smith TE, Kuo WH, Balskus EP, Bock VD, Roizen JL, Theberge AB, Carroll KA, Kurihara T, Wessler JD. Total Synthesis of (−)-Hennoxazole A. J Org Chem 2007; 73:142-50. [DOI: 10.1021/jo7018015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas E. Smith
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | - Wen-Hsin Kuo
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | - Emily P. Balskus
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | - Victoria D. Bock
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | - Jennifer L. Roizen
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | | | - Kathleen A. Carroll
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | - Tomoki Kurihara
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
| | - Jeffrey D. Wessler
- Department of Chemistry, Williams College, Williamstown, Massachusetts 01267
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97
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Investigating Direct Access to 2-Oxospiro[4.5]decanones via 6π-Electrocyclisation. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700367] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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98
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)01371-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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99
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)00834-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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100
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Hodgson DM, Fleming MJ, Stanway SJ. The reactivity of epoxides with lithium 2,2,6,6-tetramethylpiperidide in combination with organolithiums or grignard reagents. J Org Chem 2007; 72:4763-73. [PMID: 17530802 DOI: 10.1021/jo070291v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The scope and limitations of lithium 2,2,6,6-tetramethylpiperidide (LTMP)-modified reductive alkylation of epoxides is detailed. A variety of organolithiums are added to terminal and 2,2-disubstituted epoxides in the presence of LTMP to generate alkenes in a completely regio- and highly stereoselective manner. Arylated alkenes, dienes, allylsilanes, and enynes are accessed using this procedure. The methodology is applied in the synthesis of the roller leaf moth pheromone, (3E,5Z)-dodecadienyl acetate. The corresponding reaction without LTMP has also been examined, and a study using deuterated epoxides provides insight into the mechanism. In the presence of LTMP, Grignard reagents are also shown to produce E-alkenes directly from epoxides.
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Affiliation(s)
- David M Hodgson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom.
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