1
|
Průchová K, Grégrová A, Helísková H, Kružík V, Čížková H. Enantioselective HS-SPME-GC-MS for Authentication of Natural and Synthetic Strawberry Flavour in Syrups. POL J FOOD NUTR SCI 2022. [DOI: 10.31883/pjfns/152237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
2
|
Nurhidayah ES, Ivansyah AL, Martoprawiro MA, Zulfikar MA. A Molecular docking study to predict enantioseparation of some chiral carboxylic acid derivatives by methyl-β-cyclodextrin. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/1013/1/012203] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
3
|
Design and evaluation of artificial receptors for the reversal of neuromuscular block. Int J Pharm 2017; 531:512-520. [DOI: 10.1016/j.ijpharm.2017.03.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/24/2017] [Accepted: 03/25/2017] [Indexed: 12/17/2022]
|
4
|
Schurig V. The Reciprocal Principle of Selectand-Selector-Systems in Supramolecular Chromatography †. Molecules 2016; 21:E1535. [PMID: 27854299 PMCID: PMC6274307 DOI: 10.3390/molecules21111535] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/02/2016] [Accepted: 11/07/2016] [Indexed: 11/20/2022] Open
Abstract
In selective chromatography and electromigration methods, supramolecular recognition of selectands and selectors is due to the fast and reversible formation of association complexes governed by thermodynamics. Whereas the selectand molecules to be separated are always present in the mobile phase, the selector employed for the separation of the selectands is either part of the stationary phase or is added to the mobile phase. By the reciprocal principle, the roles of selector and selectand can be reversed. In this contribution in honor of Professor Stig Allenmark, the evolution of the reciprocal principle in chromatography is reviewed and its advantages and limitations are outlined. Various reciprocal scenarios, including library approaches, are discussed in efforts to optimize selectivity in separation science.
Collapse
Affiliation(s)
- Volker Schurig
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| |
Collapse
|
5
|
Limitations and extensions of the lock-and-key principle: differences between gas state, solution and solid state structures. Int J Mol Sci 2015; 16:6694-717. [PMID: 25815592 PMCID: PMC4424984 DOI: 10.3390/ijms16046694] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 03/16/2015] [Indexed: 12/30/2022] Open
Abstract
The lock-and-key concept is discussed with respect to necessary extensions. Formation of supramolecular complexes depends not only, and often not even primarily on an optimal geometric fit between host and guest. Induced fit and allosteric interactions have long been known as important modifications. Different binding mechanisms, the medium used and pH effects can exert a major influence on the affinity. Stereoelectronic effects due to lone pair orientation can lead to variation of binding constants by orders of magnitude. Hydrophobic interactions due to high-energy water inside cavities modify the mechanical lock-and-key picture. That optimal affinities are observed if the cavity is only partially filled by the ligand can be in conflict with the lock-and-key principle. In crystals other forces than those between host and guest often dominate, leading to differences between solid state and solution structures. This is exemplified in particular with calixarene complexes, which by X-ray analysis more often than other hosts show guest molecules outside their cavity. In view of this the particular problems with the identification of weak interactions in crystals is discussed.
Collapse
|
6
|
Tuza K, Jicsinszky L, Sohajda T, Puskás I, Fenyvesi É. Synthesis of modified cyclic and acyclic dextrins and comparison of their complexation ability. Beilstein J Org Chem 2014; 10:2836-43. [PMID: 25550750 PMCID: PMC4273282 DOI: 10.3762/bjoc.10.301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/14/2014] [Indexed: 11/23/2022] Open
Abstract
We compared the complex forming ability of α-, β- and γ-cyclodextrins (α-CD, β-CD and γ-CD) with their open ring analogs. In addition to the native cyclodextrins also modified cyclodextrins and the corresponding maltooligomers, functionalized with neutral 2-hydroxypropyl moieties, were synthesized. A new synthetic route was worked out via bromination, benzylation, deacetylation and debenzylation to obtain the 2-hydroxypropyl maltooligomer counterparts. The complexation properties of non-modified and modified cyclic and acyclic dextrins were studied and compared by photon correlation spectroscopy (PCS) and capillary electrophoresis (CE) using model guest compounds. In some cases cyclodextrins and their open-ring analogs (acyclodextrins) show similar complexation abilities, while with other guests considerably different behavior was observed depending on the molecular dimensions and chemical characteristics of the guests. This was explained by the enhanced flexibility of the non-closed rings. Even the signs of enantiorecognition were observed for the chloropheniramine/hydroxypropyl maltohexaose system. Further studies are planned to help the deeper understanding of the interactions.
Collapse
Affiliation(s)
- Kata Tuza
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - László Jicsinszky
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
- Dipartimento di Scienza e Tecnologia del Farmaco, Universitá di Torino, via P. Giuria 9, Turin, 10125, Italy
| | - Tamás Sohajda
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - István Puskás
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| |
Collapse
|
7
|
Schurig V. Salient Features of Enantioselective Gas Chromatography: The Enantiomeric Differentiation of Chiral Inhalation Anesthetics as a Representative Methodological Case in Point. Top Curr Chem (Cham) 2013; 340:153-207. [DOI: 10.1007/128_2013_440] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
8
|
Gas chromatographic enantioseparation of derivatized α-amino acids on chiral stationary phases—Past and present. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:3122-40. [DOI: 10.1016/j.jchromb.2011.04.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 03/28/2011] [Accepted: 04/01/2011] [Indexed: 11/23/2022]
|
9
|
Use of derivatized cyclodextrins as chiral selectors for the separation of enantiomers by gas chromatography. ANNALES PHARMACEUTIQUES FRANÇAISES 2010; 68:82-98. [DOI: 10.1016/j.pharma.2009.11.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 11/24/2009] [Accepted: 11/26/2009] [Indexed: 11/18/2022]
|
10
|
Uccello-Barretta G, Vanni L, Balzano F. Nuclear magnetic resonance approaches to the rationalization of chromatographic enantiorecognition processes. J Chromatogr A 2010; 1217:928-40. [DOI: 10.1016/j.chroma.2009.10.070] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 09/30/2009] [Accepted: 10/23/2009] [Indexed: 10/20/2022]
|
11
|
Issaraseriruk N, Shitangkoon A, Aree T. Molecular docking study for the prediction of enantiodifferentiation of chiral styrene oxides by octakis(2,3-di-O-acetyl-6-O-tert-butyldimethylsilyl)-γ-cyclodextrin. J Mol Graph Model 2010; 28:506-12. [DOI: 10.1016/j.jmgm.2009.11.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 11/22/2009] [Accepted: 11/27/2009] [Indexed: 11/15/2022]
|
12
|
Abstract
Supramolecular chemistry has expanded dramatically in recent years both in terms of potential applications and in its relevance to analogous biological systems. The formation and function of supramolecular complexes occur through a multiplicity of often difficult to differentiate noncovalent forces. The aim of this Review is to describe the crucial interaction mechanisms in context, and thus classify the entire subject. In most cases, organic host-guest complexes have been selected as examples, but biologically relevant problems are also considered. An understanding and quantification of intermolecular interactions is of importance both for the rational planning of new supramolecular systems, including intelligent materials, as well as for developing new biologically active agents.
Collapse
Affiliation(s)
- Hans-Jörg Schneider
- Organische Chemie, Universität des Saarlandes, 66041 Saarbrücken, Deutschland.
| |
Collapse
|
13
|
|
14
|
Wei W, Guo B, Lin JM. Helical- and ahelical-dependent chiral recognition mechanisms in capillary electrophoresis using amylose as the selector. Electrophoresis 2009; 30:1380-7. [DOI: 10.1002/elps.200800560] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
15
|
Sicoli G, Kreidler D, Czesla H, Hopf H, Schurig V. Gas chromatographic enantioseparation of unfunctionalized chiral alkanes: A challenge in separation science (overview, state of the art, and perspectives). Chirality 2009; 21:183-98. [DOI: 10.1002/chir.20638] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
16
|
Wang JY, Zhao F, Zhang M, Peng Y, Yuan LM. Glucose, cellobiose, lactose and raffinose used as chiral stationary phases in HPLC. CHINESE CHEM LETT 2008. [DOI: 10.1016/j.cclet.2008.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
17
|
A Maltooctaose Derivative (“Acyclodextrin”) as a Chiral Stationary Phase for Enantioselective Gas Chromatography. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800508] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
18
|
Affiliation(s)
- Timothy J Ward
- Millsaps College 1701 North State Street, Box 150306, Jackson, Mississippi 39210, USA.
| | | |
Collapse
|
19
|
Uccello-Barretta G, Balzano F, Pertici F, Jicsinszky L, Sicoli G, Schurig V. External vs. Internal Interactions in the Enantiodiscrimination of Fluorinated α-Amino Acid Derivatives by Heptakis[2,3-di-O-acetyl-6-O-(tert-butyldimethylsilyl)]-β-cyclodextrin, a Powerful Chiral Solvating Agent for NMR Spectroscopy. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701113] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|