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Gomes DM, Silva AF, Gomes AC, Neves P, Valente AA, Gonçalves IS, Pillinger M. Pyrazine-bridged molybdenum(0) carbonyl and molybdenum(VI) oxide network solids as catalysts for epoxidation and sulfoxidation. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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2
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Pisk J, Agustin D. Molybdenum, Vanadium, and Tungsten-Based Catalysts for Sustainable (ep)Oxidation. Molecules 2022; 27:6011. [PMID: 36144747 PMCID: PMC9504910 DOI: 10.3390/molecules27186011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/26/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
This article gives an overview of the research activity of the LAC2 team at LCC developed at Castres in the field of sustainable chemistry with an emphasis on the collaboration with a research team from the University of Zagreb, Faculty of Science, Croatia. The work is situated within the context of sustainable chemistry for the development of catalytic processes. Those processes imply molecular complexes containing oxido-molybdenum, -vanadium, -tungsten or simple polyoxometalates (POMs) as catalysts for organic solvent-free epoxidation. The studies considered first the influence of the nature of complexes (and related ligands) on the reactivity (assessing mechanisms through DFT calculations) with model substrates. From those model processes, the work has been enlarged to the valorization of biomass resources. A part concerns the activity on vanadium chemistry and the final part concerns the use of POMs as catalysts, from molecular to grafted catalysts, (ep)oxidizing substrates from fossil and biomass resources.
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Affiliation(s)
- Jana Pisk
- LCC-CNRS, Université de Toulouse, CNRS, UPS, CEDEX 4, F-31077 Toulouse, France
- Department of Chemistry, Institut Universitaire de Technologie Paul Sabatier, University of Toulouse, Av. G. Pompidou, BP20258, CEDEX, F-81104 Castres, France
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Dominique Agustin
- LCC-CNRS, Université de Toulouse, CNRS, UPS, CEDEX 4, F-31077 Toulouse, France
- Department of Chemistry, Institut Universitaire de Technologie Paul Sabatier, University of Toulouse, Av. G. Pompidou, BP20258, CEDEX, F-81104 Castres, France
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3
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Hydrolysis of Limonene Epoxide over Hierarchical Zeolites. Catal Letters 2022. [DOI: 10.1007/s10562-022-03963-y] [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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4
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Park J, Han F, Lee IS. Biotransformation of (-)-α-Bisabolol by Absidia coerulea. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030881. [PMID: 35164145 PMCID: PMC8840173 DOI: 10.3390/molecules27030881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 11/30/2022]
Abstract
(−)-α-Bisabolol, a bioactive monocyclic sesquiterpene alcohol, has been used in pharmaceutical and cosmetic products with anti-inflammatory, antibacterial and skin-caring properties. However, the poor water solubility of (−)-α-bisabolol limits its pharmaceutical applications. It has been recognized that microbial transformation is a very useful approach to generate more polar metabolites. Fifteen microorganisms were screened for their ability to metabolize (−)-α-bisabolol in order to obtain its more polar derivatives, and the filamentous fungus Absidia coerulea was selected for scale-up fermentation. Seven new and four known metabolites were obtained from biotransformation of (−)-α-bisabolol (1), and all the metabolites exhibited higher aqueous solubility than that of the parent compound 1. The structures of newly formed metabolites were established as (1R,5R,7S)- and (1R,5S,7S)-5-hydroxy-α-bisabolol (2 and 3), (1R,5R,7S,10S)-5-hydroxybisabolol oxide B (4), (1R,7S,10S)-1-hydroxybisabolol oxide B (5), 12-hydroxy-α-bisabolol (7), (1S,3R,4S,7S)- and (1S,3S,4S,7S)-3,4-dihydroxy-α-bisabolol (8 and 10) on the basis of spectroscopic analyses. These compounds could also be used as reference standards for the detection and identification of the metabolic products of 1 in the mammalian system.
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Morikawa H, Yamaguchi JI, Sugimura SI, Minamoto M, Gorou Y, Morinaga H, Motokucho S. Systematic synthetic study of four diastereomerically distinct limonene-1,2-diols and their corresponding cyclic carbonates. Beilstein J Org Chem 2019; 15:130-136. [PMID: 30745988 PMCID: PMC6350878 DOI: 10.3762/bjoc.15.13] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/17/2018] [Indexed: 01/02/2023] Open
Abstract
In order to produce versatile and potentially functional terpene-based compounds, a (R)-limonene-derived diol and its corresponding five-membered cyclic carbonate were prepared. The diol (cyclic carbonate) comprises four diastereomers based on the stereochemical configuration of the diol (and cyclic carbonate) moiety. By choosing the appropriate starting compounds (trans- and cis-limonene oxide) and conditions, the desired diastereomers were synthesised in moderate to high yields with, in most cases, high stereoselectivity. Comparison of the NMR data of the obtained diols and carbonates revealed that the four different diastereomers of each compound could be distinguished by reference to their characteristic signals.
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Affiliation(s)
- Hiroshi Morikawa
- Department of Applied Chemistry, Kanagawa Institute of Technology, 1030, Shimo-ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Jun-Ichi Yamaguchi
- Department of Applied Chemistry, Kanagawa Institute of Technology, 1030, Shimo-ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Shun-Ichi Sugimura
- Department of Applied Chemistry, Kanagawa Institute of Technology, 1030, Shimo-ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Masato Minamoto
- Department of Applied Chemistry, Kanagawa Institute of Technology, 1030, Shimo-ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Yuuta Gorou
- Department of Applied Chemistry, Kanagawa Institute of Technology, 1030, Shimo-ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Hisatoyo Morinaga
- Faculty of Education, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-4-37, Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Suguru Motokucho
- Graduate School of Engineering, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki-city 852-8521, Japan
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Influence of ligand substitution on molybdenum catalysts with tridentate Schiff base ligands for the organic solvent-free oxidation of limonene using aqueous TBHP as oxidant. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.09.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Khrimian A, Shirali S, Vermillion KE, Siegler MA, Guzman F, Chauhan K, Aldrich JR, Weber DC. Determination of the stereochemistry of the aggregation pheromone of harlequin bug, Murgantia histrionica. J Chem Ecol 2014; 40:1260-8. [PMID: 25408429 DOI: 10.1007/s10886-014-0521-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/17/2014] [Accepted: 11/04/2014] [Indexed: 10/24/2022]
Abstract
Preparation of a complete stereoisomeric library of 1,10-bisaboladien-3-ols and selected 10,11-epoxy-1-bisabolen-3-ols was pivotal for the identification of the aggregation pheromone of the brown marmorated stink bug, Halyomorpha halys. Herein, we describe syntheses of the remaining 10,11-epoxy-1-bisabolen-3-ols, and provide additional evidence on the assignment of relative and absolute configurations of these compounds by single-crystal X-ray crystallography of an intermediate, (3S,6R,7R,10S)-1-bisabolen-3,10,11-triol. To demonstrate the utility of this stereoisomeric library, we revisited the aggregation pheromone of the harlequin bug, Murgantia histrionica, and showed that the male-produced pheromone consists of two stereoisomers of 10,11-epoxy-1-bisabolen-3-ol. Employment of eight cis-10,11-epoxy-1-bisabolen-3-ol stereoisomeric standards, two enantioselective GC columns, and NMR spectroscopy enabled the identification of these compounds as (3S,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol and (3S,6S,7R,10R)-10,11-epoxy-1-bisabolen-3-ol, which are produced by M. histrionica males in 1.4:1 ratio.
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Affiliation(s)
- Ashot Khrimian
- US Department of Agriculture, Agricultural Research Service, Invasive Insect Biocontrol and Behavior Laboratory, Beltsville, MD, 20705, USA,
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Khrimian A, Zhang A, Weber DC, Ho HY, Aldrich JR, Vermillion KE, Siegler MA, Shirali S, Guzman F, Leskey TC. Discovery of the aggregation pheromone of the brown marmorated stink bug (Halyomorpha halys) through the creation of stereoisomeric libraries of 1-bisabolen-3-ols. JOURNAL OF NATURAL PRODUCTS 2014; 77:1708-1717. [PMID: 24963992 DOI: 10.1021/np5003753] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We describe a novel and straightforward route to all stereoisomers of 1,10-bisaboladien-3-ol and 10,11-epoxy-1-bisabolen-3-ol via the rhodium-catalyzed asymmetric addition of trimethylaluminum to diastereomeric mixtures of cyclohex-2-enones 1 and 2. The detailed stereoisomeric structures of many natural sesquiterpenes with the bisabolane skeleton were previously unknown because of the absence of stereoselective syntheses of individual stereoisomers. Several of the bisabolenols are pheromones of economically important pentatomid bug species. Single-crystal X-ray crystallography of underivatized triol 13 provided unequivocal proof of the relative and absolute configurations. Two of the epoxides, (3S,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol (3) and (3R,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol (4), were identified as the main components of a male-produced aggregation pheromone of the brown marmorated stink bug, Halyomorpha halys, using GC analyses on enantioselective columns. Both compounds attracted female, male, and nymphal H. halys in field trials. Moreover, mixtures of stereoisomers containing epoxides 3 and 4 were also attractive to H. halys, signifying that the presence of additional stereoisomers did not hinder attraction of H. halys and relatively inexpensive mixtures can be used in monitoring, as well as control strategies. H. halys is a polyphagous invasive species in the U.S. and Europe that causes severe injury to fruit, vegetables, and field crops and is also a serious nuisance pest.
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Affiliation(s)
- Ashot Khrimian
- U.S. Department of Agriculture, Agricultural Research Service , Beltsville Area, IIBBL, Maryland 20705, United States
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Leung AE, Rubbiani R, Gasser G, Tuck KL. Enantioselective total syntheses of the proposed structures of prevezol B and evaluation of anti-cancer activity. Org Biomol Chem 2014; 12:8239-46. [PMID: 25199510 DOI: 10.1039/c4ob01662a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first enantioselective total syntheses of the proposed structures of the natural product prevezol B are reported. This work has shown that the proposed structures of prevezol B are incorrect.
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Affiliation(s)
- Anna E. Leung
- School of Chemistry
- Monash University
- Clayton, Australia
| | - Riccardo Rubbiani
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich, Switzerland
| | - Gilles Gasser
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich, Switzerland
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Leung AE, Blair M, Forsyth CM, Tuck KL. Synthesis of the Proposed Structures of Prevezol C. Org Lett 2013; 15:2198-201. [DOI: 10.1021/ol400754e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anna E. Leung
- School of Chemistry, Monash University, Clayton, Vic. 3800, Australia
| | - Michael Blair
- School of Chemistry, Monash University, Clayton, Vic. 3800, Australia
| | - Craig M. Forsyth
- School of Chemistry, Monash University, Clayton, Vic. 3800, Australia
| | - Kellie L. Tuck
- School of Chemistry, Monash University, Clayton, Vic. 3800, Australia
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Total synthesis of a novel non-lactone camptothecin analog through microwave-assisted [3,3]-sigmatropic rearrangement. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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12
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Curcuma longa and Curcuma mangga leaves exhibit functional food property. Food Chem 2012; 135:634-40. [PMID: 22868139 DOI: 10.1016/j.foodchem.2012.04.129] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 03/27/2012] [Accepted: 04/24/2012] [Indexed: 01/12/2023]
Abstract
Although leaves of Curcuma mangga and Curcuma longa are used in food preparations, the bioactive components in it are not known. In this study, antioxidant, antiinflammatory and anticancer activities of leave extracts and its isolates were investigated using established bioassay procedures in our laboratory. The leaf extracts of both plants gave similar bioassay and chromatographic profiles. The methanolic and water extracts of C. mangga (CMM and CMW) and C. longa (CLM and CLW), at 100 μg/mL, inhibited lipid peroxidation (LPO) by 78%, 63%, 81% and 43%, cyclooxygenase enzymes COX-1 by 55%, 33%, 43% and 24% and COX-2 by 65%, 55%, 77% and 69%, respectively. At same concentration, CMM, CMW, CLM and CLW showed growth inhibition of human tumour cell lines by 0-46%. Therefore, a bioassay-guided isolation of water and methanolic extracts of C. longa was carried out and afforded nine isolates. At 25 μg/mL, these compounds inhibited LPO by 11-87%, COX-1 and -2 enzymes by 0-35% and 0-82% and growth of human tumour cells by 0-36%, respectively.
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13
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Duschek A, Kirsch SF. 2-Iodoxybenzoic Acid-A Simple Oxidant with a Dazzling Array of Potential Applications. Angew Chem Int Ed Engl 2011; 50:1524-52. [DOI: 10.1002/anie.201000873] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Indexed: 12/26/2022]
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14
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Duschek A, Kirsch SF. 2-Iodoxybenzoesäure - ein einfaches Oxidationsmittel mit einer Vielfalt an Anwendungsmöglichkeiten. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201000873] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Blair M, Forsyth CM, Tuck KL. Towards the synthesis of prevezol C: total enantioselective synthesis of (−)-2-epi-prevezol C. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Harrowven DC, Curran DP, Kostiuk SL, Wallis-Guy IL, Whiting S, Stenning KJ, Tang B, Packard E, Nanson L. Potassium carbonate–silica: a highly effective stationary phase for the chromatographic removal of organotin impurities. Chem Commun (Camb) 2010; 46:6335-7. [DOI: 10.1039/c0cc01328e] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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