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Kowalczyk-Dworak D, Kwit M, Albrecht Ł. Allylic-Allylic Alkylation with 3,5-Dimethyl-4-nitroisoxazole: A Route to Dicarboxylic Acid Derivatives. J Org Chem 2020; 85:2938-2944. [PMID: 32040920 PMCID: PMC7497636 DOI: 10.1021/acs.joc.9b02530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
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In this work, the
first application of 3,5-dimethyl-4-nitroisoxazole as a vinylogous
pronucleophile in the allylic–allylic alkylation of Morita–Baylis–Hillman
(MBH) carbonates is described. The reaction has been realized under
nucleophilic catalysis conditions with dimeric cinchona alkaloids,
providing excellent enantiocontrol of the process. The usefulness
of the products thus obtained has been confirmed in selected chemoselective
reactions. The most important one involves the transformation of the
isoxazole moiety into a carboxylic acid group, thus opening access
to dicarboxylic acid derivatives.
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Affiliation(s)
- Dorota Kowalczyk-Dworak
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Marcin Kwit
- Department of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
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Ema T, Yamasaki T, Watanabe S, Hiyoshi M, Takaishi K. Cross-Coupling Approach to an Array of Macrocyclic Receptors Functioning as Chiral Solvating Agents. J Org Chem 2018; 83:10762-10769. [PMID: 30126269 DOI: 10.1021/acs.joc.8b01327] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Chiral macrocyclic receptors 1 with multiple hydrogen-bonding sites in the cavity were synthesized and used as NMR chiral solvating agents (CSAs). The Suzuki-Miyaura cross-coupling reaction gave rapid access to a series of variants 1b-p of unsubstituted parent compound 1a. Among them, 1d with the 4-cyanophenyl group at the 3,3'-positions of the binaphthyl moiety was the most excellent CSA for a benchmark analyte compound, 2-chloropropionic acid (CPA); both of the quartet and doublet signals of CPA were split most completely in CDCl3. Binding constants ( Ka) determined in CDCl3 by NMR titrations indicated that ( R)-1d was the most enantioselective ( Ka( S)/ Ka( R) = 5.4). Interestingly, the Ka value of ( R)-1d for ( S)-CPA (5900) was greater than that of ( R)-1a for ( S)-CPA (3080), which strongly suggests an attractive interaction between the 4-cyanophenyl group of ( R)-1d and ( S)-CPA. The X-ray crystal structure of 1d indicates that one of the two H atoms meta to the cyano group is directed toward the cavity. DFT calculations suggested that this H atom of the 4-cyanophenyl group of ( R)-1d forms a weak hydrogen bond with the Cl atom of ( S)-CPA (C-H···Cl-C hydrogen bond).
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Affiliation(s)
- Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , Tsushima, Okayama 700-8530 , Japan
| | - Takayuki Yamasaki
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , Tsushima, Okayama 700-8530 , Japan
| | - Sagiri Watanabe
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , Tsushima, Okayama 700-8530 , Japan
| | - Mahoko Hiyoshi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , Tsushima, Okayama 700-8530 , Japan
| | - Kazuto Takaishi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , Tsushima, Okayama 700-8530 , Japan
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Pawlik A, Janusz G, Dębska I, Siwulski M, Frąc M, Rogalski J. Genetic and metabolic intraspecific biodiversity of Ganoderma lucidum. BIOMED RESEARCH INTERNATIONAL 2015; 2015:726149. [PMID: 25815332 PMCID: PMC4359883 DOI: 10.1155/2015/726149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/12/2015] [Indexed: 11/18/2022]
Abstract
Fourteen Ganoderma lucidum strains from different geographic regions were identified using ITS region sequencing. Based on the sequences obtained, the genomic relationship between the analyzed strains was determined. All G. lucidum strains were also genetically characterized using the AFLP technique. G. lucidum strains included in the analysis displayed an AFLP profile similarity level in the range from 9.6 to 33.9%. Biolog FF MicroPlates were applied to obtain data on utilization of 95 carbon sources and mitochondrial activity. The analysis allowed comparison of functional diversity of the fungal strains. The substrate utilization profiles for the isolates tested revealed a broad variability within the analyzed G. lucidum species and proved to be a good profiling technology for studying the diversity in fungi. Significant differences have been demonstrated in substrate richness values. Interestingly, the analysis of growth and biomass production also differentiated the strains based on the growth rate on the agar and sawdust substrate. In general, the mycelial growth on the sawdust substrate was more balanced and the fastest fungal growth was observed for GRE3 and FCL192.
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Affiliation(s)
- Anna Pawlik
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Grzegorz Janusz
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Iwona Dębska
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Marek Siwulski
- Department of Vegetable Crops, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland
| | - Magdalena Frąc
- Department of Plant and Soil System, Laboratory of Molecular and Environmental Microbiology, Institute of Agrophysics PAS, Doświadczalna 4, 20-290 Lublin, Poland
| | - Jerzy Rogalski
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
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Chaudhari SR, Suryaprakash N. Ternary ion-pair complexation: a protocol for chiral discrimination and the assignment of absolute configuration of chiral hydroxy acids. NEW J CHEM 2013. [DOI: 10.1039/c3nj00779k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nishimura H, Sasaki M, Seike H, Nakamura M, Watanabe T. Alkadienyl and alkenyl itaconic acids (ceriporic acids G and H) from the selective white-rot fungus Ceriporiopsis subvermispora: a new class of metabolites initiating ligninolytic lipid peroxidation. Org Biomol Chem 2012; 10:6432-42. [DOI: 10.1039/c2ob25415h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nishimura H, Murayama K, Watanabe T, Honda Y, Watanabe T. Diverse rare lipid-related metabolites including ω-7 and ω-9 alkenylitaconic acids (ceriporic acids) secreted by a selective white rot fungus, Ceriporiopsis subvermispora. Chem Phys Lipids 2012; 165:97-104. [DOI: 10.1016/j.chemphyslip.2011.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 10/22/2011] [Accepted: 10/24/2011] [Indexed: 10/15/2022]
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Epoxy ceriporic acid produced by selective lignin-degrading fungus Ceriporiopsis subvermispora. Chem Phys Lipids 2011; 164:707-12. [PMID: 21864516 DOI: 10.1016/j.chemphyslip.2011.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2011] [Revised: 07/13/2011] [Accepted: 07/22/2011] [Indexed: 11/23/2022]
Abstract
Ceriporiopsis subvermispora is a selective white rot basidiomycete which degrades lignin in wood at a distance far from enzymes. Low molecular mass metabolites play a central role in the oxidative degradation of lignin. To understand the unique wood-decaying mechanism, we surveyed the oxidized derivatives of ceriporic acids (alk(en)ylitaconic acids) produced by C. subvermispora using high-resolution liquid chromatography multiple-stage mass spectrometry (HR-LC/MS(n)). The analysis of the precursor and product ions from the extract suggested that an epoxidized derivative of ceriporic acid is produced by the fungus. To identify the new metabolite, an authentic compound of ceriporic acid epoxide was synthesized in vitro by reacting (R)-3-[(Z)-hexadec-7-enyl]-itaconic acid (ceriporic acid C) with m-chloroperbenzoic acid. The precursor and product ions from the natural metabolite and authentic epoxide were identical and distinguishable from those of hydroxy and hydroperoxy derivatives after reduction with NaBD(4). Feeding experiments with [U-(13)C]-glucose, 99% and the subsequent analyses of the first and second generation product ions demonstrated that the oxidized ceriporic acid was (R)-3-(7,8-epoxy-hexadecyl)-itaconic acid. To our knowledge, this study is the first to report that natural alkylitaconic acid bears an epoxy group on its side chain.
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Wenzel TJ, Chisholm CD. Using NMR spectroscopic methods to determine enantiomeric purity and assign absolute stereochemistry. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2011; 59:1-63. [PMID: 21600355 DOI: 10.1016/j.pnmrs.2010.07.003] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/28/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Thomas J Wenzel
- Department of Chemistry, Bates College, Lewiston, Maine 04240, USA.
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Wenzel TJ, Chisholm CD. Assignment of absolute configuration using chiral reagents and NMR spectroscopy. Chirality 2010; 23:190-214. [DOI: 10.1002/chir.20889] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 05/18/2010] [Indexed: 11/11/2022]
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Lundell TK, Mäkelä MR, Hildén K. Lignin-modifying enzymes in filamentous basidiomycetes--ecological, functional and phylogenetic review. J Basic Microbiol 2010; 50:5-20. [PMID: 20175122 DOI: 10.1002/jobm.200900338] [Citation(s) in RCA: 223] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Filamentous fungi owe powerful abilities for decomposition of the extensive plant material, lignocellulose, and thereby are indispensable for the Earth's carbon cycle, generation of soil humic matter and formation of soil fine structure. The filamentous wood-decaying fungi belong to the phyla Basidiomycota and Ascomycota, and are unique organisms specified to degradation of the xylem cell wall components (cellulose, hemicelluloses, lignins and extractives). The basidiomycetous wood-decaying fungi form brackets, caps or resupinaceous (corticioid) fruiting bodies when growing on wood for dissemination of their sexual basidiospores. In particular, the ability to decompose the aromatic lignin polymers in wood is mostly restricted to the white rot basidiomycetes. The white-rot decay of wood is possible due to secretion of organic acids, secondary metabolites, and oxidoreductive metalloenzymes, heme peroxidases and laccases, encoded by divergent gene families in these fungi. The brown rot basidiomycetes obviously depend more on a non-enzymatic strategy for decomposition of wood cellulose and modification of lignin. This review gives a current ecological, genomic, and protein functional and phylogenetic perspective of the wood and lignocellulose-decaying basidiomycetous fungi.
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Affiliation(s)
- Taina K Lundell
- Fungal Biotechnology Group, Department of Applied Chemistry and Microbiology, Division of Microbiology, Viikki Biocenter, University of Helsinki, Finland.
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Watanabe T, Tsuda S, Nishimura H, Honda Y, Watanabe T. Characterization of a Delta12-fatty acid desaturase gene from Ceriporiopsis subvermispora, a selective lignin-degrading fungus. Appl Microbiol Biotechnol 2010; 87:215-24. [PMID: 20155356 DOI: 10.1007/s00253-010-2438-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 12/29/2009] [Accepted: 01/04/2010] [Indexed: 01/26/2023]
Abstract
Ceriporiopsis subvermispora, a white-rot fungus, is characterized as one of the best biopulping fungi because it can degrade lignin selectively without serious damage to cellulose. We previously demonstrated that during the early stage of wood decay, this fungus produces large amounts of linoleic acid (18:2n-6) and degrades lignin by manganese peroxidase-catalyzed lipid peroxidation. In this study, we cloned a Delta12-fatty acid desaturase gene absolutely essential for the biosynthesis of linoleic acid as the main substrate for lipid peroxidation. This gene designated Cs-fad2 encodes a protein with three histidine-rich domains and four membrane-spanning domains characteristic of other Delta12-fatty acid desaturases. Moreover, we heterologously expressed Cs-fad2 in Saccharomyces cerevisiae lacking Delta12-fatty acid desaturase, and detected the de novo biosynthesis of linoleic acid by gas chromatography-mass spectrometry analysis. We also investigated transcription of Cs-fad2 under various conditions. The transcription was activated and repressed in the presence of a lignin fragment and exogenous fatty acids, respectively. These results may shed light on the molecular relationship between fatty acid metabolism and selective lignin degradation in C. subvermispora.
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Affiliation(s)
- Takahito Watanabe
- Laboratory of Biomass Conversion, Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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