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de Alcântara Pinto DC, Pitasse-Santos P, de Souza GA, Castro RN, Freire de Lima ME. Peracetylation of polyphenols under rapid and mild reaction conditions. Nat Prod Res 2022:1-6. [PMID: 35073791 DOI: 10.1080/14786419.2022.2031186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Structural modifications are an important tool for studying the properties of naturally occurring polyphenols. Regarding the preparation of acetyl esters, the presence of hydroxyl groups stabilized by intramolecular hydrogen bonds may pose an obstacle for the peracetylation of these compounds. In this paper, we present a facile protocol for the acetylation of selected polyphenols under mild reaction conditions by using acetic anhydride, catalytic amount 4-dimethylaminopyridine (DMAP) and dimethylformamide (DMF) as solvent. Reaction conditions were adjusted for optimal formation of peracetylated polyphenols while minimizing the formation of byproducts. Butyric anhydride was employed as an alternative acylating agent and showed similar results. Reaction yields varied from 78-97%, and products were obtained in high purity, as determined by LCMS(ESI+), 1H NMR and 13C NMR.
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Affiliation(s)
| | - Paulo Pitasse-Santos
- Instituto de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | | | - Rosane Nora Castro
- Instituto de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
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2
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Rapp C, Pival-Marko S, Tassano E, Nidetzky B, Kratzer R. Reductive enzymatic dynamic kinetic resolution affording 115 g/L (S)-2-phenylpropanol. BMC Biotechnol 2021; 21:58. [PMID: 34635076 PMCID: PMC8507385 DOI: 10.1186/s12896-021-00715-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 09/20/2021] [Indexed: 11/10/2022] Open
Abstract
Background Published biocatalytic routes for accessing enantiopure 2-phenylpropanol using oxidoreductases afforded maximal product titers of only 80 mM. Enzyme deactivation was identified as the major limitation and was attributed to adduct formation of the aldehyde substrate with amino acid residues of the reductase. Results A single point mutant of Candida tenuis xylose reductase (CtXR D51A) with very high catalytic efficiency (43·103 s−1 M−1) for (S)-2-phenylpropanal was found. The enzyme showed high enantioselectivity for the (S)-enantiomer but was deactivated by 0.5 mM substrate within 2 h. A whole-cell biocatalyst expressing the engineered reductase and a yeast formate dehydrogenase for NADH-recycling provided substantial stabilization of the reductase. The relatively slow in situ racemization of 2-phenylpropanal and the still limited biocatalyst stability required a subtle adjustment of the substrate-to-catalyst ratio. A value of 3.4 gsubstrate/gcell-dry-weight was selected as a suitable compromise between product ee and the conversion ratio. A catalyst loading of 40 gcell-dry-weight was used to convert 1 M racemic 2-phenylpropanal into 843 mM (115 g/L) (S)-phenylpropanol with 93.1% ee. Conclusion The current industrial production of profenols mainly relies on hydrolases. The bioreduction route established here represents an alternative method for the production of profenols that is competitive with hydrolase-catalyzed kinetic resolutions. ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12896-021-00715-5.
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Affiliation(s)
- Christian Rapp
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, 8010, Graz, Austria
| | - Simone Pival-Marko
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, 8010, Graz, Austria.,Austrian Centre of Industrial Biotechnology (ACIB), 8010, Graz, Austria
| | - Erika Tassano
- Department of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Bernd Nidetzky
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, 8010, Graz, Austria.,Austrian Centre of Industrial Biotechnology (ACIB), 8010, Graz, Austria
| | - Regina Kratzer
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, 8010, Graz, Austria.
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3
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Recent insights, applications and prospects of xylose reductase: a futuristic enzyme for xylitol production. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-020-03674-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Wiltschi B, Cernava T, Dennig A, Galindo Casas M, Geier M, Gruber S, Haberbauer M, Heidinger P, Herrero Acero E, Kratzer R, Luley-Goedl C, Müller CA, Pitzer J, Ribitsch D, Sauer M, Schmölzer K, Schnitzhofer W, Sensen CW, Soh J, Steiner K, Winkler CK, Winkler M, Wriessnegger T. Enzymes revolutionize the bioproduction of value-added compounds: From enzyme discovery to special applications. Biotechnol Adv 2020; 40:107520. [DOI: 10.1016/j.biotechadv.2020.107520] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 10/18/2019] [Accepted: 01/13/2020] [Indexed: 12/11/2022]
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5
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Control of enantioselectivity in the enzymatic reduction of halogenated acetophenone analogs by substituent positions and sizes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151820] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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6
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7
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Is literature data useful for identifying enzyme catalysts for new substrates? A case study on reduction of 1-aryl-2-alkanoates. Bioorg Chem 2017; 74:260-271. [DOI: 10.1016/j.bioorg.2017.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/16/2017] [Accepted: 08/17/2017] [Indexed: 01/04/2023]
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8
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Knaus T, Böhmer W, Mutti FG. Amine dehydrogenases: efficient biocatalysts for the reductive amination of carbonyl compounds. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2017; 19:453-463. [PMID: 28663713 PMCID: PMC5486444 DOI: 10.1039/c6gc01987k] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Amines constitute the major targets for the production of a plethora of chemical compounds that have applications in the pharmaceutical, agrochemical and bulk chemical industries. However, the asymmetric synthesis of α-chiral amines with elevated catalytic efficiency and atom economy is still a very challenging synthetic problem. Here, we investigated the biocatalytic reductive amination of carbonyl compounds employing a rising class of enzymes for amine synthesis: amine dehydrogenases (AmDHs). The three AmDHs from this study - operating in tandem with a formate dehydrogenase from Candida boidinii (Cb-FDH) for the recycling of the nicotinamide coenzyme - performed the efficient amination of a range of diverse aromatic and aliphatic ketones and aldehydes with up to quantitative conversion and elevated turnover numbers (TONs). Moreover, the reductive amination of prochiral ketones proceeded with perfect stereoselectivity, always affording the (R)-configured amines with more than 99% enantiomeric excess. The most suitable amine dehydrogenase, the optimised catalyst loading and the required reaction time were determined for each substrate. The biocatalytic reductive amination with this dual-enzyme system (AmDH-Cb-FDH) possesses elevated atom efficiency as it utilizes the ammonium formate buffer as the source of both nitrogen and reducing equivalents. Inorganic carbonate is the sole by-product.
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Affiliation(s)
- Tanja Knaus
- Van’t Hoff Institute for Molecular Sciences (HIMS), University
of Amsterdam, Science Park 904, 1098 XH, The Netherlands
| | - Wesley Böhmer
- Van’t Hoff Institute for Molecular Sciences (HIMS), University
of Amsterdam, Science Park 904, 1098 XH, The Netherlands
| | - Francesco G. Mutti
- Van’t Hoff Institute for Molecular Sciences (HIMS), University
of Amsterdam, Science Park 904, 1098 XH, The Netherlands
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9
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Candida parapsilosis: A versatile biocatalyst for organic oxidation-reduction reactions. Bioorg Chem 2016; 68:187-213. [DOI: 10.1016/j.bioorg.2016.08.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/08/2016] [Accepted: 08/10/2016] [Indexed: 11/22/2022]
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10
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Contente ML, Serra I, Palazzolo L, Parravicini C, Gianazza E, Eberini I, Pinto A, Guidi B, Molinari F, Romano D. Enzymatic reduction of acetophenone derivatives with a benzil reductase from Pichia glucozyma (KRED1-Pglu): electronic and steric effects on activity and enantioselectivity. Org Biomol Chem 2016; 14:3404-8. [DOI: 10.1039/c6ob00047a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Enantioselective reduction of mono-substituted acetophenones by ketoreductase KRED1-Pglu.
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Affiliation(s)
- Martina L. Contente
- Department of Food
- Nutritional and Environmental Sciences (DeFENS)
- University of Milan
- 20133 Milano
- Italy
| | - Immacolata Serra
- Department of Food
- Nutritional and Environmental Sciences (DeFENS)
- University of Milan
- 20133 Milano
- Italy
| | - Luca Palazzolo
- Department of Pharmacological and Biomolecular Sciences (DiSFeB)
- University of Milan
- 20133 Milano
- Italy
| | - Chiara Parravicini
- Department of Pharmacological and Biomolecular Sciences (DiSFeB)
- University of Milan
- 20133 Milano
- Italy
| | - Elisabetta Gianazza
- Department of Pharmacological and Biomolecular Sciences (DiSFeB)
- University of Milan
- 20133 Milano
- Italy
| | - Ivano Eberini
- Department of Pharmacological and Biomolecular Sciences (DiSFeB)
- University of Milan
- 20133 Milano
- Italy
| | - Andrea Pinto
- Department of Pharmaceutical Sciences (DISFARM)
- University of Milan
- 20133 Milano
- Italy
| | - Benedetta Guidi
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA)
- University of Milan
- 20129 Milano
- Italy
| | - Francesco Molinari
- Department of Food
- Nutritional and Environmental Sciences (DeFENS)
- University of Milan
- 20133 Milano
- Italy
| | - Diego Romano
- Department of Food
- Nutritional and Environmental Sciences (DeFENS)
- University of Milan
- 20133 Milano
- Italy
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11
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Phytochemical Profile of the Aerial Parts of Sedum sediforme and Anti-inflammatory Activity of Myricitrin. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The aim of this study was to investigate the phytochemical profile of the methanol extract of the aerial parts of Sedum sediforme and to identify its secondary metabolites. By means of chromatographic separation and enrichment of compounds, HPLC-ESI-MS, HRMS, 1D-, 2D- NMR and/or comparison with reference compounds, three triterpenes, two sterols, ten flavonoids and twelve phenolic compounds were identified, together with two new compounds, i.e. (2 R*, 3 R*)-5,7-dihydroxy-2,3-dimethyl-4-chromanone-7- O-ß-D-glucoside (27) and butan-2- O-rutinoside (28). Out of the 29 identified secondary metabolites, 18 are described as ingredients of S. sediforme herein for the first time. Furthermore, myricitrin, one of the major constituents, was tested for its ability to inhibit different enzymes within the arachidonic acid cascade in order to determine its anti-inflammatory properties. Whereas there was only either weak or no inhibition of the microsomal prostaglandin E2 synthase-1 (mPGES-1) and the soluble epoxide hydrolase (sEH), myricitrin showed strong inhibition of 5-lipoxygenase (5-LO), with an IC50 of 7.8 ± 0.2 μM.
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12
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Heterocycle-substituted tetrazole ligands for copper-catalysed aerobic oxidation of alcohols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.11.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Chu YH, Chen CJ, Wu SH, Hsieh JF. Inhibition of xanthine oxidase by Rhodiola crenulata extracts and their phytochemicals. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3742-3749. [PMID: 24712453 DOI: 10.1021/jf5004094] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Using a fractionation technique, four phytochemicals were isolated from Rhodiola crenulata extracts. These compounds were identified as 4'-hydroxyacetophenone (4-HAP), epicatechin-(4β,8)-epicatechin gallate (B2-3'-O-gallate), salidroside, and p-tyrosol using mass spectrometry and nuclear magnetic resonance spectroscopy. The inhibition of xanthine oxidase (XO) activity by these purified compounds was then evaluated and compared to that of a known XO inhibitor (allopurinol; IC50 = 12.21 ± 0.27 μM). Both 4-HAP and B2-3'-O-gallate showed an XO inhibitory effect, for which the half maximal inhibitory concentration (IC50) values were 15.62 ± 1.19 and 24.24 ± 1.80 μM, respectively. However, salidroside and p-tyrosol did not show significant inhibitory effects on XO at 30 μM. Furthermore, an inhibition kinetics study indicated that 4-HAP and B2-3'-O-gallate are mixed competitive inhibitors. The inhibition constants (Ki) of 4-HAP and B2-3'-O-gallate were 8.41 ± 1.03 and 6.16 ± 1.56 μM, respectively. These results suggest that 4-HAP and B2-3'-O-gallate are potent XO inhibitors.
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Affiliation(s)
- Yung-Hung Chu
- Department of Food Science, Fu Jen Catholic University , 510 Zhongzheng Road, Xinzhuang, Taipei 24205, Taiwan
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14
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Zhang W, Lou S, Liu Y, Xu Z. Palladium-Catalyzed Chelation-Assisted Aromatic C–H Nitration: Regiospecific Synthesis of Nitroarenes Free from the Effect of the Orientation Rules. J Org Chem 2013; 78:5932-48. [DOI: 10.1021/jo400594j] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Wei Zhang
- State Key Laboratory Breeding Base
of Green Chemistry-Synthesis
Technology, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Shaojie Lou
- State Key Laboratory Breeding Base
of Green Chemistry-Synthesis
Technology, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Yunkui Liu
- State Key Laboratory Breeding Base
of Green Chemistry-Synthesis
Technology, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Zhenyuan Xu
- State Key Laboratory Breeding Base
of Green Chemistry-Synthesis
Technology, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
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15
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Zhu LJ, Hou YL, Shen XY, Pan XD, Zhang X, Yao XS. Monoterpene pyridine alkaloids and phenolics from Scrophularia ningpoensis and their cardioprotective effect. Fitoterapia 2013; 88:44-9. [PMID: 23602903 DOI: 10.1016/j.fitote.2013.04.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 04/09/2013] [Accepted: 04/11/2013] [Indexed: 11/15/2022]
Abstract
Scrophularianines A-C (1-3), three new unusual monoterpene pyridine alkaloids with cyclopenta [c] pyridine skeleton reported from the genus Scrophularia for the first time, together with 15 known compounds (4-18), were isolated from the extract of Scrophularia ningpoensis. Their structures were elucidated on the basis of extensive analyses of spectroscopic evidences. The biogenetic relationship between monoterpene pyridine alkaloids and iridoids was proposed preliminarily. The myocardial protective bioassay indicated that compounds 13 and 14 with a concentration of 10(-4)M exhibited significantly protective effect against H2O2-induced apoptosis in cardiomyocytes.
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Affiliation(s)
- Ling-Juan Zhu
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Yun-Long Hou
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, PR China
| | - Xiu-Yu Shen
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Xiao-Dong Pan
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, PR China
| | - Xue Zhang
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, PR China.
| | - Xin-Sheng Yao
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China.
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16
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Vogl M, Brecker L. Substrate binding to Candida tenuis xylose reductase during catalysis. RSC Adv 2013. [DOI: 10.1039/c3ra41448e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Vogl M, Kratzer R, Nidetzky B, Brecker L. Candida tenuis
Xylose Reductase Catalyzed Reduction of Aryl Ketones for Enantioselective Synthesis of Active Oxetine Derivatives. Chirality 2012; 24:847-53. [DOI: 10.1002/chir.22082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 05/16/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Michael Vogl
- Department of Organic Chemistry; University of Vienna; Wien Austria
| | - Regina Kratzer
- Institute of Biotechnology and Biochemical Engineering; Graz University of Technology; Graz Austria
| | - Bernd Nidetzky
- Institute of Biotechnology and Biochemical Engineering; Graz University of Technology; Graz Austria
| | - Lothar Brecker
- Department of Organic Chemistry; University of Vienna; Wien Austria
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18
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Halodeboronation of organotrifluoroborates using tetrabutylammonium tribromide or cesium triiodide. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Mangas-Sánchez J, Busto E, Gotor-Fernández V, Gotor V. Highly Stereoselective Chemoenzymatic Synthesis of the 3H-Isobenzofuran Skeleton. Access to Enantiopure 3-Methylphthalides. Org Lett 2012; 14:1444-7. [DOI: 10.1021/ol300191s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Mangas-Sánchez
- Organic and Inorganic Department, Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo Calle Julián Clavería s/n, Oviedo 33006, Spain
| | - Eduardo Busto
- Organic and Inorganic Department, Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo Calle Julián Clavería s/n, Oviedo 33006, Spain
| | - Vicente Gotor-Fernández
- Organic and Inorganic Department, Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo Calle Julián Clavería s/n, Oviedo 33006, Spain
| | - Vicente Gotor
- Organic and Inorganic Department, Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo Calle Julián Clavería s/n, Oviedo 33006, Spain
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