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Ajormal F, Bikas R, Noshiranzadeh N, Emami M, Kozakiewicz-Piekarz A. Synthesis of chiral Cu(II) complexes from pro-chiral Schiff base ligand and investigation of their catalytic activity in the asymmetric synthesis of 1,2,3-triazoles. Sci Rep 2024; 14:10603. [PMID: 38719987 PMCID: PMC11079015 DOI: 10.1038/s41598-024-60930-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 04/29/2024] [Indexed: 05/12/2024] Open
Abstract
A pro-chiral Schiff base ligand (HL) was synthesized by the reaction of 2-amino-2-ethyl-1,3-propanediol and pyridine-2-carbaldehyde in methanol. The reaction of HL with CuCl2·2H2O and CuBr2 in methanol gave neutral mononuclear Cu(II) complexes with general formula of [Cu(HL)Cl2] (1) and [Cu(HL)Br2] (2), respectively. By slow evaporation of the methanolic solutions of 1 and 2, their enantiomers were isolated in crystalline format. The formation of pure chiral crystals in the racemic mixture was amply authenticated by single crystal X-ray analysis, which indicated that S-[Cu(HL)Cl2], R-[Cu(HL)Cl2], and S-[Cu(HL)Br2] are crystallized in chiral P212121 space group of orthorhombic system. Preferential crystallization was used to isolate the R and S enantiomers as single crystals and the isolated compounds were also studied by CD analysis. Structural studies indicated that the origin of the chirality in these compounds is related to the coordination mode of the employed pro-chiral ligand (HL) because one of its carbon atoms has been converted to a chiral center in the synthesized complexes. Subsequently, these complexes were used in click synthesis of a β-hydroxy-1,2,3-triazole and the results of catalytic studies indicated that 1 and 2 can act as enantioselective catalysts for the asymmetric synthesis of β-hydroxy-1,2,3-triazole product under mild condition. This study illustrates the significant capacity of the use of pro-chiral ligands in preparing chiral catalysts based on complexes which can also be considered as an effective approach to cheap chiral catalysts from achiral reagents.
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Affiliation(s)
- Fatemeh Ajormal
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, 34148-96818, Iran.
| | - Nader Noshiranzadeh
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 45371-38791, Iran.
| | - Marzieh Emami
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Anna Kozakiewicz-Piekarz
- Department of Biomedical and Polymer Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland
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Aguirre-Pranzoni C, Tosso RD, Bisogno FR, Kurina-Sanz M, Orden AA. Preparation of chiral β-hydroxytriazoles in one-pot chemoenzymatic bioprocesses catalyzed by Rhodotorula mucilaginosa. Process Biochem 2019. [DOI: 10.1016/j.procbio.2018.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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3
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Kozlov O, Kalíková K, Gondová T, Budovská M, Salayová A, Tesařová E. Fast enantioseparation of indole phytoalexins in additive free supercritical fluid chromatography. J Chromatogr A 2019; 1596:209-216. [PMID: 30910386 DOI: 10.1016/j.chroma.2019.03.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/13/2019] [Accepted: 03/16/2019] [Indexed: 11/26/2022]
Abstract
A series of chiral indole phytoalexins with potential anticancer and antimicrobial activity were enantioseparated in supercritical fluid chromatography. Two polysaccharide-based chiral stationary phases composed of tris-(3,5-dimethylphenylcarbamate) derivatives of amylose or cellulose coated on 2.5 μm silica particles were successfully used. The influences of the polysaccharide backbone, co-solvent type and co-solvent content in the mobile phase on retention, enantioselectivity and enantioresolution of indole phytoalexins were investigated. Fast baseline separations were achieved for 26 from 27 tested compounds. Amylose-based chiral stationary phase provided higher number of baseline resolutions of the indole phytoalexins than the cellulose-based one. However, certain complementary enantioresolution results towards the studied compounds were observed between the investigated columns. The relationship between structure of the indole phytoalexins and their chromatographic behavior in supercritical fluid chromatography was discussed.
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Affiliation(s)
- Oleksandr Kozlov
- Department of Analytical Chemistry, Faculty of Science, P. J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic
| | - Květa Kalíková
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 12843, Prague, Czech Republic.
| | - Taťána Gondová
- Department of Analytical Chemistry, Faculty of Science, P. J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic
| | - Mariana Budovská
- Department of Organic Chemistry, Faculty of Science, P. J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic
| | - Aneta Salayová
- Department of Organic Chemistry, Faculty of Science, P. J. Šafárik University, Moyzesova 11, 040 01 Košice, Slovak Republic; Department of Chemistry, Biochemistry and Biophysics, Institute of Pharmaceutical Chemistry, University of Veterinary Medicine and Pharmacy, 041 81 Košice, Slovak Republic
| | - Eva Tesařová
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 12843, Prague, Czech Republic
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Dascalu AE, Ghinet A, Billamboz M, Lipka E. Performance comparison of chlorinated chiral stationary phases in supercritical fluid chromatography for separation of selected pyrrolidone derivatives. J Pharm Anal 2019; 9:248-253. [PMID: 31452962 PMCID: PMC6702407 DOI: 10.1016/j.jpha.2019.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/23/2019] [Accepted: 03/04/2019] [Indexed: 11/12/2022] Open
Abstract
The effects of two chlorinated chiral stationary phases, namely, Lux Cellulose-2 and Lux i-Cellulose-5, flow-rate, percentage of co-solvent and chemical structures of the compounds on retention and resolution were studied within this article. In this work a backpressure of 150 bar, a temperature of 40 °C and 10% of methanol as co-solvent were chosen as operating conditions. The optimum flow-rate was 2 mL/min. The percentage of co-solvent was studied between 7.5% and 15%. We have observed that 15% of methanol gave the best results for most of the compounds. For all the derivatives, the Lux Cellulose-2 provided better resolutions going from 1.50 to 3.59 compared with Lux i-Cellulose-5.
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Affiliation(s)
- Anca-Elena Dascalu
- Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France.,Ecole des Hautes Etudes d'Ingénieur (HEI), Laboratoire de Pharmacochimie, 13 rue de Toul, F-59046 Lille, France.,UFR Pharmacie, Laboratoire de Chimie Analytique, BP 83, F-59006 Lille, France.,'Alexandru Ioan Cuza' University of Iasi, Faculty of Chemistry, Bd. Carol I nr. 11, 700506 Iasi, Romania
| | - Alina Ghinet
- Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France.,Ecole des Hautes Etudes d'Ingénieur (HEI), Laboratoire de Pharmacochimie, 13 rue de Toul, F-59046 Lille, France.,'Alexandru Ioan Cuza' University of Iasi, Faculty of Chemistry, Bd. Carol I nr. 11, 700506 Iasi, Romania
| | - Muriel Billamboz
- Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France.,Ecole des Hautes Etudes d'Ingénieur (HEI), Laboratoire de Pharmacochimie, 13 rue de Toul, F-59046 Lille, France
| | - Emmanuelle Lipka
- Univ. Lille, Inserm, U995 - LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France.,UFR Pharmacie, Laboratoire de Chimie Analytique, BP 83, F-59006 Lille, France
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Harps LC, Joseph JF, Parr MK. SFC for chiral separations in bioanalysis. J Pharm Biomed Anal 2019; 162:47-59. [DOI: 10.1016/j.jpba.2018.08.061] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/28/2018] [Accepted: 08/30/2018] [Indexed: 01/31/2023]
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