1
|
Serafin-Lewańczuk M, Brzezińska-Rodak M, Lubiak-Kozłowska K, Majewska P, Klimek-Ochab M, Olszewski TK, Żymańczyk-Duda E. Phosphonates enantiomers receiving with fungal enzymatic systems. Microb Cell Fact 2021; 20:81. [PMID: 33827578 PMCID: PMC8028800 DOI: 10.1186/s12934-021-01573-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/26/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Phosphonates derivatives are in the area of interests because of their unique chemical-physical features. These compounds manifest variety of biological interactions within the sensitive living cells, including impact on particular enzymes activities. Biological "cause and effect" interactions are based upon the specific matching between the structures and/or compounds and this is usually the result of proper optical configurations of particular chiral moieties. Presented research is targeted to the phosphonates with the heteroatom incorporated in their side functionalities. Such molecules are described as possible substrates of bioconversion for the first time lately and this field is not fully explored. RESULTS Presented research is targeted to the synthesis of pure hetero-phosphonates enantiomers. The catalytic activity of yeasts and moulds were tested towards two substrates: the thienyl and imidazole phosphonates to resolve their racemic mixtures. Biotransformations conditions differed depending on the outcome, what included changing of following parameters: type of cultivation media, bioprocess duration (24-72 h), additional biocatalyst pre-treatment (24-48 h starvation step triggering the secondary metabolism). (S)-1-amino-1-(3-thienyl)methylphosphonate was produced with the assistance of R. mucilaginosa or A. niger (e.e. up to 98% and yield up to 100%), starting from the 3 mM of substrate racemic mixture. Bioconversion of racemic mixture of 3 mM of (1-amino-1-(4-imidazole)methylphosphonic acid) resulted in the synthesis of S-isomer (up to 95% of e.e.; 100% of yield) with assistance of R. mucilaginosa. 24 h biotransformation was conducted with biomass preincubated under 48-hour starvation conditions. Such stereoselective resolution of the racemic mixtures of substrates undergoes under kinetic control with the conversion of one from the enantiomers. CONCLUSIONS Composition of the culturing media and pre-incubation in conditions of nutrient deficiency were significant factors influencing the results of kinetic resolution of racemic mixtures of phosphonic substrates and influencing the economic side of the biocatalysis e.g. by determining the duration of whole biocatalytic process.
Collapse
Affiliation(s)
- Monika Serafin-Lewańczuk
- Department of Biochemistry, Molecular Biology and Biotechnology, Laboratory of Biotechnology, Wrocław University of Science and Technology, Wrocław, Poland.
| | - Małgorzata Brzezińska-Rodak
- Department of Biochemistry, Molecular Biology and Biotechnology, Laboratory of Biotechnology, Wrocław University of Science and Technology, Wrocław, Poland
| | - Katarzyna Lubiak-Kozłowska
- Department of Biochemistry, Molecular Biology and Biotechnology, Laboratory of Biotechnology, Wrocław University of Science and Technology, Wrocław, Poland
| | - Paulina Majewska
- Department of Biochemistry, Molecular Biology and Biotechnology, Laboratory of Biotechnology, Wrocław University of Science and Technology, Wrocław, Poland
| | - Magdalena Klimek-Ochab
- Department of Biochemistry, Molecular Biology and Biotechnology, Laboratory of Biotechnology, Wrocław University of Science and Technology, Wrocław, Poland
| | - Tomasz K Olszewski
- Department of Physical and Quantum Chemistry, Wrocław University of Science and Technology, Wrocław, Poland
| | - Ewa Żymańczyk-Duda
- Department of Biochemistry, Molecular Biology and Biotechnology, Laboratory of Biotechnology, Wrocław University of Science and Technology, Wrocław, Poland.
| |
Collapse
|
2
|
Żymańczyk-Duda E, Dunal N, Brzezińska-Rodak M, Osiewała A, Olszewski TK, Klimek-Ochab M, Serafin-Lewańczuk M. First biological conversion of chiral heterophosphonate derivative - Scaling and paths of conversion discussion. Bioorg Chem 2019; 93:102751. [PMID: 30709702 DOI: 10.1016/j.bioorg.2019.01.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 01/09/2023]
Abstract
Presented work describes the first approach for the biocatalytic resolution of racemic mixtures of heterophosphonate derivative. Penicillium funiculosum and Rhodotorula mucilaginosa were successfully applied for the biological conversion of racemic mixture of 1-amino-1-(3'-pyridyl)methylphosphonic acid 3. Both microorganisms carried out the kinetically driven process leading to conversion of one from the substrate enantiomers, leaving the second one unreacted. Application of R. mucilaginosa allowed obtaining pure enantiomer of the substrate (yield 100%, e.e 100% - unreacted isomer) after 24 h of biotransformation of 3 in the laboratory scale process (Method E), applying biocatalyst pre-treatment step - 24 h of starvation. In case of other biocatalyst, application of whole cells of P. funiculosum in laboratory scale process, also resulted in conversion of the racemic mixture of substrate 3via oxidative deamination into ketone derivative, which was then bioreduced (second step of the process) into 1-hydroxy-1-(3'-pyridyl)methylphosphonic acid 4. This time two products were isolated: unreacted substrate and hydroxy compound 4. Conversion degree ranged from 30% (standard procedure, method A) to even 70% (with extra addition of sodium pyruvate - method B2). However, in this case, bioconversion was not enantioselective - products: amino- and hydroxyderivative were obtained as racemic mixtures. Both biocatalysts were also tested towards the scaling so other biocatalytic procedures were introduced - with immobilized fungal mycelium. In case of Rhodotorula mucilaginosa this approach failed (data not shown) but Penicillium funiculosum turned out to be active and also selective. Thus, application of this biocatalyst in the half-preparative scale, continuous-flow bioprocess (Method C2) resulted in the obtaining of pure S-3 (100% e.e.) isomer with the 100% of conversion degree, without any side products. Recorded NMR spectra allowed confirming the reaction progress and its selectivity and also postulating possible mechanism of conversion.
Collapse
Affiliation(s)
- Ewa Żymańczyk-Duda
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Natalia Dunal
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Małgorzata Brzezińska-Rodak
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Angelika Osiewała
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Tomasz K Olszewski
- Department of Organic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Magdalena Klimek-Ochab
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Monika Serafin-Lewańczuk
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| |
Collapse
|
3
|
Metlushka KE, Sadkova DN, Nikitina KA, Yamaleeva ZR, Ivshin KA, Kataeva ON, Alfonsov VA. A new synthetic route to chiral 3-aryl-5-ethyl-1,4,2-oxazaphosphorines. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
4
|
Kmiecik N, Majewska P, Kozyra K, Żymańczyk-Duda E. Bioconversion of aminophosphonates to hydroxyphosphonatesviatwo step redox reactions employing fungi. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1395437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Natalia Kmiecik
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| | - Paulina Majewska
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| | - Kinga Kozyra
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| | - Ewa Żymańczyk-Duda
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| |
Collapse
|
5
|
Węglarz-Tomczak E, Staszewska K, Talma M, Mucha A. Enantiomeric α,β-diaminoethylphosphonic acids as potent inhibitors of aminopeptidases—stereoselective synthesis and biological activity. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Belik MY, Yegorov O, Sorochinsky AE, Kukhar VP. Resolution of fluorinated aminophosphonic acid enantiomers by precolumn derivatization with following reverse phase liquid chromatography. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1094656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Michael Yu. Belik
- Fine Organic Synthesis Department, Institute of Bioorganic Chemistry & Petrochemistry, NAS of Ukraine, Kiev, Ukraine
| | | | - Alexander E. Sorochinsky
- Fine Organic Synthesis Department, Institute of Bioorganic Chemistry & Petrochemistry, NAS of Ukraine, Kiev, Ukraine
| | - Valery P. Kukhar
- Fine Organic Synthesis Department, Institute of Bioorganic Chemistry & Petrochemistry, NAS of Ukraine, Kiev, Ukraine
| |
Collapse
|
7
|
Lee YJ, Choi S, Lee J, Nguyen NT, Lee K, Kang JS, Mar W, Kim KH. Chiral discrimination of sibutramine enantiomers by capillary electrophoresis and proton nuclear magnetic resonance spectroscopy. Arch Pharm Res 2012; 35:671-81. [DOI: 10.1007/s12272-012-0411-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 08/17/2011] [Accepted: 08/17/2011] [Indexed: 10/28/2022]
|
8
|
Błażewska KM, Ni F, Haiges R, Kashemirov BA, Coxon FP, Stewart CA, Baron R, Rogers MJ, Seabra MC, Ebetino FH, McKenna CE. Synthesis, stereochemistry and SAR of a series of minodronate analogues as RGGT inhibitors. Eur J Med Chem 2011; 46:4820-6. [DOI: 10.1016/j.ejmech.2011.04.063] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Revised: 04/26/2011] [Accepted: 04/27/2011] [Indexed: 11/30/2022]
|
9
|
Brzezińska-Rodak M, Klimek-Ochab M, Zymańczyk-Duda E, Kafarski P. Biocatalytic resolution of enantiomeric mixtures of 1-aminoethanephosphonic acid. Molecules 2011; 16:5896-904. [PMID: 21760571 PMCID: PMC6264373 DOI: 10.3390/molecules16075896] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 07/12/2011] [Accepted: 07/12/2011] [Indexed: 11/16/2022] Open
Abstract
Several fungal strains, namely Bauveria bassiana, Cuninghamella echinulata, Aspergillus fumigatus, Penicillium crustosum and Cladosporium herbarum, were used as biocatalysts to resolve racemic mixtures of 1-aminoethanephosphonic acid using L/D amino acid oxidase activity. The course of reaction was analyzed by 31P-NMR in the presence of cyclodextrin used as chiral discriminating agent. The best result (42% e.e of R-isomer) was obtained with a strain of Cuninghamella echinulata.
Collapse
Affiliation(s)
- Małgorzata Brzezińska-Rodak
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
| | | | | | | |
Collapse
|
10
|
Metlushka KE, Sadkova DN, Shaimardanova LN, Kataeva ON, Alfonsov VA. Stereoselective Synthesis of α-Aminophosphonic Acids Using the Betti Base as Chiral Auxiliary. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.531827] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Kirill E. Metlushka
- a A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center , Russian Academy of Sciences , Kazan , Russia
| | - Dilyara N. Sadkova
- a A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center , Russian Academy of Sciences , Kazan , Russia
| | - Liliya N. Shaimardanova
- a A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center , Russian Academy of Sciences , Kazan , Russia
| | - Olga N. Kataeva
- a A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center , Russian Academy of Sciences , Kazan , Russia
| | - Vladimir A. Alfonsov
- a A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center , Russian Academy of Sciences , Kazan , Russia
| |
Collapse
|
11
|
Molaabasi F, Talebpour Z. Enantiomeric discrimination and quantification of the chiral organophosphorus pesticide fenamiphos in aqueous samples by a novel and selective ³¹P nuclear magnetic resonance spectroscopic method using cyclodextrins as chiral selector. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:803-808. [PMID: 21192704 DOI: 10.1021/jf103169p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A rapid, selective, and accurate quantitative ³¹P nuclear magnetic resonance (³¹P NMR) spectroscopy method was used for the chiral recognition of the racemic organophosphorus pesticide fenamiphos using chiral solvating agents (CSAs). Six neutral cyclodextrins (CDs) (α-CD, β-CD, methyl-β-CD, hydroxyethyl-β-CD, hydroxypropyl-β-CD, and hydroxypropyl-γ-CD) and two anionic CDs (carboxymethyl-β-CD and carboxyethyl-β-CD) were selected for these experiments. The shift displacement values (Δδ), after addition of each of the eight CDs in the highest possible molar ratio to a guest, were recorded. The results showed that β-CD and hydroxypropyl-β-CD were the best chiral solvating agents for the enantiomeric discrimination of fenamiphos. Two-dimension rotating frame nuclear Overhauser spectroscopy (ROESY) was used to investigate the structure of the β-CD-fenamiphos inclusion complex in aqueous solution. To determine the fenamiphos enantiomers, a calibration curve was drawn for two enantiomers over the range of 0.05-0.25 mg mL⁻¹. The limits of detection (S/N = 3) were obtained as 0.0068 and 0.0060 mg mL⁻¹ for fenamiphos enantiomers. The recovery studies were performed on aqueous real samples ranging from 94 to 107% with coefficients of variation of ≤ 9%.
Collapse
Affiliation(s)
- Fatemeh Molaabasi
- Department of Chemistry, Faculty of Science, Alzahra University, Vanak, Tehran, Iran
| | | |
Collapse
|
12
|
Rudzińska E, Dziedzioła G, Berlicki L, Kafarski P. Enantiodifferentiation of alpha-hydroxyalkanephosphonic acids in 31P NMR with application of alpha-cyclodextrin as chiral discriminating agent. Chirality 2010; 22:63-8. [PMID: 19306429 DOI: 10.1002/chir.20707] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Alpha-cyclodextrin was shown to be convenient chemical shift reagent for determination of the enantiomeric composition of alpha-hydroxyphosphonic acids by means of 31P NMR. The developed methodology appeared to be reliable, repetitive, easy to perform and simple for interpretation. Enantiomeric discrimination in the 31P NMR spectra for 12 of 13 studied hydroxyphosphonates was achieved, with baseline separation of resonances obtained for eight compounds. In those cases, the chemical nonequivalence values ranged from 0.069 to 0.313 ppm. The studies showed that enantioselectivity is strongly influenced by the solution pD and the optimal condition was found at pD 2 or 10 depending on the guest structure. On the basis of the ROESY spectra the complexation modes of selected hydroxyphosphonates with alpha-cyclodextrin was postulated.
Collapse
Affiliation(s)
- Ewa Rudzińska
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wrocław, Poland.
| | | | | | | |
Collapse
|
13
|
Cinchona alkaloids as privileged chiral solvating agents for the enantiodiscrimination of N-protected aminoalkanephosphonates—a comparative NMR study. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.11.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
14
|
Metlushka K, Kashemirov B, Zheltukhin V, Sadkova D, Büchner B, Hess C, Kataeva O, McKenna C, Alfonsov V. 1-(α-Aminobenzyl)-2-naphthol: A New Chiral Auxiliary for the Synthesis of Enantiopure α-Aminophosphonic Acids. Chemistry 2009; 15:6718-22. [DOI: 10.1002/chem.200802540] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
15
|
Błażewska KM, Gajda T. Assignment of the absolute configuration of hydroxy- and aminophosphonates by NMR spectroscopy. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.05.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
LU P, ZHANG YP, SONG BA, YANG S, BHADURY SP, HU DY, XUE W, CHEN Z, JIN LH. Chiral Separation of Novelα-Aminophosphonates Containing a Benzothiazole Moiety by Liquid Chromatography Using an Amylose Stationary Phase. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890300] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
17
|
Mucha A, Lämmerhofer M, Lindner W, Pawełczak M, Kafarski P. Individual stereoisomers of phosphinic dipeptide inhibitor of leucine aminopeptidase. Bioorg Med Chem Lett 2008; 18:1550-4. [DOI: 10.1016/j.bmcl.2008.01.107] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2008] [Revised: 01/29/2008] [Accepted: 01/29/2008] [Indexed: 10/22/2022]
|
18
|
Ma F, Shen X, Ou-Yang J, Deng Z, Zhang C. Macrocyclic compounds as chiral solvating agents for phosphinic, phosphonic, and phosphoric acids. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2007.12.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
19
|
Rudzińska E, Berlicki Ł, Mucha A, Kafarski P. Chiral discrimination of ethyl and phenyl N-benzyloxycarbonylaminophosphonates by cyclodextrins. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.06.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
Rudzińska E, Poliwoda A, Berlicki Ł, Mucha A, Dzygiel P, Wieczorek PP, Kafarski P. Enantiodifferentiation of N-benzyloxycarbonylaminophosphonic and phosphinic acids and their esters using cyclodextrins by means of capillary electrophoresis. J Chromatogr A 2007; 1138:284-90. [PMID: 17097095 DOI: 10.1016/j.chroma.2006.10.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2005] [Revised: 10/25/2006] [Accepted: 10/26/2006] [Indexed: 11/22/2022]
Abstract
Capillary electrophoresis was successfully applied for separation of the enantiomers of N-benzyloxycarbonyl-alpha-aminophosphonic and alpha-aminophosphinic acids as well as their ethyl and phenyl monoesters with the use of a range of commercially available cyclodextrins (alpha, beta and hydroxypropyl-gamma-cyclodextrins) as chiral selectors. The dependence of effectiveness of separation on type and concentration of these chiral selectors as well as on pH of background electrolyte was examined in some detail.
Collapse
Affiliation(s)
- Ewa Rudzińska
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspiańskiego 27, 50-370 Wrocław, Poland
| | | | | | | | | | | | | |
Collapse
|
21
|
Berlicki Ł, Rudzińska E, Mucha A, Kafarski P. Cyclodextrins as NMR probes in the study of the enantiomeric compositions of N-benzyloxycarbonylamino-phosphonic and phosphinic acids. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|