1
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Lopes C, Cartigny Y, Brandel C, Dupray V, Body C, Shemchuk O, Leyssens T. A greener pathway to enantiopurity: mechanochemical deracemization through abrasive grinding. Chemistry 2023:e202300585. [PMID: 37057720 DOI: 10.1002/chem.202300585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/13/2023] [Accepted: 04/14/2023] [Indexed: 04/15/2023]
Abstract
We report the first case of mechanochemical deracemization by using liquid-assisted abrasive grinding. The target molecule is a precursor of Paclobutrazol, an important fungicide and plant growth inhibitor. Using mechanochemical deracemization, we are even able to transform a 10% ee scalemic mixture of this latter in an enantioenriched product of 97% ee in a couple of hours. This is substantially shorter compared to solution-based deracemization methodologies. The present paper thus introduces an efficient and greener process to enantiopure material.
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Affiliation(s)
- Chrystal Lopes
- Rouen University: Universite de Rouen, Sciences et méthodes séparatives, FRANCE
| | - Yohann Cartigny
- Rouen University: Universite de Rouen, Sciences et méthodes séparatives, FRANCE
| | - Clément Brandel
- Université de Rouen: Universite de Rouen, Sciences et méthodes séparatives, BELGIUM
| | - Valérie Dupray
- Rouen University: Universite de Rouen, Sciences et méthodes séparatives, FRANCE
| | - Carole Body
- Universite Catholique de Louvain, IMCN, BELGIUM
| | - Oleksii Shemchuk
- Université catholique de Louvain: Universite Catholique de Louvain, IMCN, BELGIUM
| | - Tom Leyssens
- UCL, IMCN, Place Louis Pasteur 1, 1348, Louvain-la-Neuve, BELGIUM
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2
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Lekhan A, Fiore C, Shemchuk O, Grepioni F, Braga D, Turner RJ. Comparison of Antimicrobial and Antibiofilm Activity of Proflavine Co-crystallized with Silver, Copper, Zinc, and Gallium Salts. ACS Appl Bio Mater 2022; 5:4203-4212. [PMID: 35970511 PMCID: PMC9491326 DOI: 10.1021/acsabm.2c00404] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/04/2022] [Indexed: 11/29/2022]
Abstract
Here, we exploit our mechanochemical synthesis for co-crystallization of an organic antiseptic, proflavine, with metal-based antimicrobials (silver, copper, zinc, and gallium). Our previous studies have looked for general antimicrobial activity for the co-crystals: proflavine·AgNO3, proflavine·CuCl, ZnCl3[Proflavinium], [Proflavinium]2[ZnCl4]·H2O, and [Proflavinium]3[Ga(oxalate)3]·4H2O. Here, we explore and compare more precisely the bacteriostatic (minimal inhibitory concentrations) and antibiofilm (prevention of cell attachment and propagation) activities of the co-crystals. For this, we choose three prominent "ESKAPE" bacterial pathogens of Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus. The antimicrobial behavior of the co-crystals was compared to that of the separate components of the polycrystalline samples to ascertain whether the proflavine-metal complex association in the solid state provided effective antimicrobial performance. We were particularly interested to see if the co-crystals were effective in preventing bacteria from initiating and propagating the biofilm mode of growth, as this growth form provides high antimicrobial resistance properties. We found that for the planktonic lifestyle of growth of the three bacterial strains, different co-crystal formulations gave selectivity for best performance. For the biofilm state of growth, we see that the silver proflavine co-crystal has the best overall antibiofilm activity against all three organisms. However, other proflavine-metal co-crystals also show practical antimicrobial efficacy against E. coli and S. aureus. While not all proflavine-metal co-crystals demonstrated enhanced antimicrobial efficacy over their constituents alone, all possessed acceptable antimicrobial properties while trapped in the co-crystal form. We also demonstrate that the metal-proflavine crystals retain antimicrobial activity in storage. This work defines that co-crystallization of metal compounds and organic antimicrobials has a potential role in the quest for antimicrobials/antiseptics in the defense against bacteria in our antimicrobial resistance era.
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Affiliation(s)
- Andrii Lekhan
- Department
of Biological Sciences, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Cecilia Fiore
- Dipartimento
di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Oleksii Shemchuk
- Institute
of Condensed Matter and Nanosciences, Université
Catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Fabrizia Grepioni
- Dipartimento
di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Dario Braga
- Dipartimento
di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Raymond J. Turner
- Department
of Biological Sciences, University of Calgary, Calgary, Alberta T2N 1N4, Canada
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3
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Leng F, Shemchuk O, Robeyns K, Leyssens T. Complexation: An Interesting Pathway for Combining Two APIs at the Solid State. Pharmaceutics 2022; 14:pharmaceutics14091960. [PMID: 36145706 PMCID: PMC9503796 DOI: 10.3390/pharmaceutics14091960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/05/2022] [Accepted: 09/12/2022] [Indexed: 11/17/2022] Open
Abstract
Combining different drugs into a single crystal form is one of the current challenges in crystal engineering, with the number of reported multi-drug solid forms remaining limited. This paper builds upon an efficient approach to combining Active Pharmaceutical Ingredients (APIs) containing carboxylic groups in their structure with APIs containing pyridine moieties. By transforming the former into their zinc salts, they can be successfully combined with the pyridine-containing APIs. This work highlights the successfulness of this approach, as well as the improvement in the physical properties of the obtained solid forms.
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4
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Zhou F, Collard L, Robeyns K, Leyssens T, Shemchuk O. L-Proline, a resolution agent able to target both enantiomers of mandelic acid: an exciting case of stoichiometry controlled chiral resolution. Chem Commun (Camb) 2022; 58:8560-8563. [PMID: 35815867 DOI: 10.1039/d2cc02942a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a thought-provoking development in chiral resolution. Using a resolving agent of a given handedness, L-proline, we show that both R- and S-enantiomers of mandelic acid can be resolved from a racemic mixture simply by varying the stoichiometry. We are the first to report this specific feature, achieved by the existence of stoichiometrically diverse cocrystal systems between R- and S-mandelic acid and L-proline.
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Affiliation(s)
- Fuli Zhou
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, B-1348 Louvain-La-Neuve, Belgium.
| | - Laurent Collard
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, B-1348 Louvain-La-Neuve, Belgium.
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, B-1348 Louvain-La-Neuve, Belgium.
| | - Tom Leyssens
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, B-1348 Louvain-La-Neuve, Belgium.
| | - Oleksii Shemchuk
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, B-1348 Louvain-La-Neuve, Belgium.
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5
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Grepioni F, Casali L, Fiore C, Mazzei L, Sun R, Shemchuk O, Braga D. Steps towards a nature inspired inorganic crystal engineering. Dalton Trans 2022; 51:7390-7400. [PMID: 35466980 DOI: 10.1039/d2dt00834c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This Perspective outlines the results obtained at the University of Bologna by applying crystal engineering strategies to develop nature inspired organic-inorganic materials to tackle challenges in the health and environment sectors. It is shown by means of a number of examples that co-crystallization of inorganic salts, such as alkali and transition metal halides, with organic compounds, such as amino acids, urea, thiourea and quaternary ammonium salts, can be successfully used for (i) chiral resolution and conglomerate formation from racemic compounds, (ii) inhibition of soil enzyme activity in order to reduce urea decomposition and environmental pollution, and (iii) preparation of novel agents to tackle antimicrobial resistance. All materials described in this Perspective have been obtained by mechanochemical solvent-free or slurry methods and characterized by solid state techniques. The fundamental idea is that a crystal engineering approach based on the choice of intermolecular interactions (coordination and hydrogen bonds) between organic and inorganic compounds allows obtaining materials with collective properties that are different, and often very much superior to those of the separate components. It is also demonstrated that the success of this strategy depends crucially on cross-disciplinary synergistic exchange with expert scientists in the areas of bioinorganics, microbiology, and chirality application-oriented developments of these novel materials.
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Affiliation(s)
- Fabrizia Grepioni
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Lucia Casali
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Cecilia Fiore
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Luca Mazzei
- Laboratory of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Viale Giuseppe Fanin 40, 40127 Bologna, Italy
| | - Renren Sun
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy. .,School of Chemical Engineering, Zhengzhou University, 450001, Zhengzou, Henan Province, The People's Republic of China
| | - Oleksii Shemchuk
- Institute of Condensed Matter and Nanosciences, UCLouvain, 1 Place Louis Pasteur, B-1348, Belgium
| | - Dario Braga
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
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6
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Zhou F, Shemchuk O, Charpentier MD, Matheys C, Collard L, Ter Horst JH, Leyssens T. Simultaneous Chiral Resolution of Two Racemic Compounds by Preferential Cocrystallization*. Angew Chem Int Ed Engl 2021; 60:20264-20268. [PMID: 34233036 DOI: 10.1002/anie.202107804] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Indexed: 11/06/2022]
Abstract
We tap into an unexplored area of preferential crystallization, being the first to develop simultaneous chiral resolution of two racemic compounds by preferential cocrystallization. We highlight how the two racemic compounds RS-mandelic acid (MAN) and RS-etiracetam (ETI) can be combined together as enantiospecific R-MAN⋅R-ETI and S-MAN⋅S-ETI cocrystals forming a stable conglomerate system and subsequently develop a cyclic preferential crystallization allowing to simultaneous resolve both compounds. The developed process leads to excellent enantiopurity both for etiracetam (ee>98 %) and mandelic acid (ee≈95 %) enantiomers.
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Affiliation(s)
- Fuli Zhou
- Institute of Condensed Matter and Nanosciences, Place Louis Pasteur, 1 bte L4.01.06, 1348, Louvain-La-Neuve, Belgium
| | - Oleksii Shemchuk
- Institute of Condensed Matter and Nanosciences, Place Louis Pasteur, 1 bte L4.01.06, 1348, Louvain-La-Neuve, Belgium
| | - Maxime D Charpentier
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC), Strathclyde Institute of Pharmacy and Biomedical Sciences, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK
| | - Chloé Matheys
- Institute of Condensed Matter and Nanosciences, Place Louis Pasteur, 1 bte L4.01.06, 1348, Louvain-La-Neuve, Belgium
| | - Laurent Collard
- Institute of Condensed Matter and Nanosciences, Place Louis Pasteur, 1 bte L4.01.06, 1348, Louvain-La-Neuve, Belgium
| | - Joop H Ter Horst
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC), Strathclyde Institute of Pharmacy and Biomedical Sciences, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.,Laboratoire Sciences et Méthodes Séparatives, Université de Rouen Normandie, Place Emile Blondel, 76821, Mont Saint Aignan Cedex, France
| | - Tom Leyssens
- Institute of Condensed Matter and Nanosciences, Place Louis Pasteur, 1 bte L4.01.06, 1348, Louvain-La-Neuve, Belgium
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7
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Zhou F, Shemchuk O, Charpentier MD, Matheys C, Collard L, ter Horst JH, Leyssens T. Simultaneous Chiral Resolution of Two Racemic Compounds by Preferential Cocrystallization**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fuli Zhou
- Institute of Condensed Matter and Nanosciences Place Louis Pasteur, 1 bte L4.01.06 1348 Louvain-La-Neuve Belgium
| | - Oleksii Shemchuk
- Institute of Condensed Matter and Nanosciences Place Louis Pasteur, 1 bte L4.01.06 1348 Louvain-La-Neuve Belgium
| | - Maxime D. Charpentier
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC) Strathclyde Institute of Pharmacy and Biomedical Sciences Technology and Innovation Centre University of Strathclyde 99 George Street Glasgow G1 1RD UK
| | - Chloé Matheys
- Institute of Condensed Matter and Nanosciences Place Louis Pasteur, 1 bte L4.01.06 1348 Louvain-La-Neuve Belgium
| | - Laurent Collard
- Institute of Condensed Matter and Nanosciences Place Louis Pasteur, 1 bte L4.01.06 1348 Louvain-La-Neuve Belgium
| | - Joop H. ter Horst
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC) Strathclyde Institute of Pharmacy and Biomedical Sciences Technology and Innovation Centre University of Strathclyde 99 George Street Glasgow G1 1RD UK
- Laboratoire Sciences et Méthodes Séparatives Université de Rouen Normandie Place Emile Blondel 76821 Mont Saint Aignan Cedex France
| | - Tom Leyssens
- Institute of Condensed Matter and Nanosciences Place Louis Pasteur, 1 bte L4.01.06 1348 Louvain-La-Neuve Belgium
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8
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Affiliation(s)
- Oleksii Shemchuk
- Institute Of Condensed Matter and Nanosciences UCLouvain 1 Place Louis Pasteur B-1348 Louvain-la-Neuve Belgium
| | - Fabrizia Grepioni
- University of Bologna Department of Chemistry G. Ciamician Via F. Selmi 2 Bologna Italy
| | - Tom Leyssens
- Institute Of Condensed Matter and Nanosciences UCLouvain 1 Place Louis Pasteur B-1348 Louvain-la-Neuve Belgium
| | - Dario Braga
- University of Bologna Department of Chemistry G. Ciamician Via F. Selmi 2 Bologna Italy
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9
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Fiore C, Shemchuk O, Grepioni F, Turner RJ, Braga D. Proflavine and zinc chloride “team chemistry”: combining antibacterial agents via solid-state interaction. CrystEngComm 2021. [DOI: 10.1039/d1ce00612f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mechanochemical and solution reaction of ZnCl2 with proflavine yields the antimicrobials [HPF]2[ZnCl4]·H2O and ZnCl3(HPF), more active, with respect to the separate components and the AgNO3 standard, towards P. aeruginosa, E. coli and S. aureus.
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Affiliation(s)
- Cecilia Fiore
- Dipartimento di Chimica “Giacomo Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Oleksii Shemchuk
- Dipartimento di Chimica “Giacomo Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Fabrizia Grepioni
- Dipartimento di Chimica “Giacomo Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | | | - Dario Braga
- Dipartimento di Chimica “Giacomo Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
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10
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Shemchuk O, Grepioni F, Braga D. Co-crystallization of racemic amino acids with ZnCl 2: an investigation of chiral selectivity upon coordination to the metal centre. CrystEngComm 2020. [DOI: 10.1039/d0ce00775g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A preference for racemic vs. meso-crystal formation has been observed upon the cocrystallization of dl-amino acids with ZnCl2, as a result of homo vs. heterochiral competition.
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Affiliation(s)
- Oleksii Shemchuk
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Fabrizia Grepioni
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Dario Braga
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
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11
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Shemchuk O, Braga D, Grepioni F, Turner RJ. Co-crystallization of antibacterials with inorganic salts: paving the way to activity enhancement. RSC Adv 2020; 10:2146-2149. [PMID: 35494556 PMCID: PMC9048849 DOI: 10.1039/c9ra10353h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/06/2020] [Indexed: 12/12/2022] Open
Abstract
Co-crystallization of the antibacterial agents proflavine and methyl viologen with the inorganic salts CuCl, CuCl2 and AgNO3 results in enhanced antimicrobial activity with respect to the separate components.
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Affiliation(s)
- Oleksii Shemchuk
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Dario Braga
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Fabrizia Grepioni
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
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12
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Shemchuk O, André V, Duarte MT, Braga D, Grepioni F. Mechanochemical preparation of molecular and ionic co-crystals of the hormone melatonin. CrystEngComm 2019. [DOI: 10.1039/c9ce00316a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular and ionic co-crystals of melatonin with piperazine, DABCO and CaCl2 were obtained via kneading with ethanol: the solubility of melatonin in H2O increases by an order of magnitude when combined with CaCl2.
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Affiliation(s)
- O. Shemchuk
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - V. André
- Centro de Química Estrutural
- Instituto Superior Técnico
- 1049-001 Lisboa
- Portugal
| | - M. T. Duarte
- Centro de Química Estrutural
- Instituto Superior Técnico
- 1049-001 Lisboa
- Portugal
| | - D. Braga
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - F. Grepioni
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
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13
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Grepioni F, Braga D, Chelazzi L, Shemchuk O, Maffei P, Sforzini A, Viscomi GC. Improving solubility and storage stability of rifaximin via solid-state solvation with Transcutol®. CrystEngComm 2019. [DOI: 10.1039/c9ce00567f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Crystallization of rifaximin from Transcutol® affords the new anhydrous τ-form, which combines a high dissolution rate with a high storage stability, as it is not affected by exposure to humidity.
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Affiliation(s)
- F. Grepioni
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - D. Braga
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - L. Chelazzi
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - O. Shemchuk
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
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14
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Shemchuk O, Tsenkova BK, Braga D, Duarte MT, André V, Grepioni F. Ionic Co-Crystal Formation as a Path Towards Chiral Resolution in the Solid State. Chemistry 2018; 24:12564-12573. [PMID: 30024647 DOI: 10.1002/chem.201802446] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/08/2018] [Indexed: 01/15/2023]
Abstract
The preparation and characterization of a whole family of hydrated ionic co-crystals formed by both enantiopure l-proline and racemic dl-proline with LiX (X=Cl, Br, I) are reported. The chiral preference of the lithium cation for homochiral coordination, both in the formation of crystalline conglomerates (with Cl and Br) and racemates (with Cl and I), in which molecules of opposite chirality are confined to distinct crystal layers, is discussed. Dehydration processes for all hydrated crystals have also been investigated.
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Affiliation(s)
- Oleksii Shemchuk
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - Boryana K Tsenkova
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Via F. Selmi 2, 40126, Bologna, Italy.,Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Dario Braga
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - M Teresa Duarte
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Vânia André
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Fabrizia Grepioni
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Via F. Selmi 2, 40126, Bologna, Italy
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15
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Shemchuk O, Braga D, Grepioni F. Alloying barbituric and thiobarbituric acids: from solid solutions to a highly stable keto co-crystal form. Chem Commun (Camb) 2018; 52:11815-11818. [PMID: 27722256 DOI: 10.1039/c6cc06615a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alloying isomorphous crystals of barbituric acid (BA) and thiobarbituric acid (TBA) yields solid solutions of general formula BAxTBA1-x (x < 0.8); for x = 0.5 the stable co-crystal BA0.5TBA0.5, isomorphous with the parent keto forms, is observed, which melts at 265 °C, i.e. ca. 10 and 20 °C higher than the melting points of BA and TBA, respectively. While the BAxTBA1-x solid solutions with x > 0.5 are stable, those with x < 0.5 convert, with time or temperature, to the BA0.5TBA0.5 co-crystal.
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Affiliation(s)
- O Shemchuk
- Dipartimento di Chimica Giacomo Ciamician, Università degli Studi di Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - D Braga
- Dipartimento di Chimica Giacomo Ciamician, Università degli Studi di Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - F Grepioni
- Dipartimento di Chimica Giacomo Ciamician, Università degli Studi di Bologna, Via Selmi 2, 40126 Bologna, Italy.
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Shemchuk O, Song L, Robeyns K, Braga D, Grepioni F, Leyssens T. Solid-state chiral resolution mediated by stoichiometry: crystallizing etiracetam with ZnCl2. Chem Commun (Camb) 2018; 54:10890-10892. [DOI: 10.1039/c8cc06199h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co-crystallization of racemic etiracetam with ZnCl2 results in a racemic compound or a conglomerate, depending on the amount of ZnCl2; the unprecedented behaviour was investigated through a racetam/ZnCl2/solvent phase diagram.
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Affiliation(s)
- Oleksii Shemchuk
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Lixing Song
- Institute of Condensed Matter and Nanosciences
- Université Catholique de Louvain
- B-1348 Louvain-La-Neuve
- Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences
- Université Catholique de Louvain
- B-1348 Louvain-La-Neuve
- Belgium
| | - Dario Braga
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Fabrizia Grepioni
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Tom Leyssens
- Institute of Condensed Matter and Nanosciences
- Université Catholique de Louvain
- B-1348 Louvain-La-Neuve
- Belgium
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Abstract
Reacting molecular organic solids with inorganic salts gives access to novel properties via ionic co-crystal formation.
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Affiliation(s)
- Dario Braga
- Department of Chemistry G. Ciamician
- University of Bologna
- 40126 Bologna
- Italy
| | - Fabrizia Grepioni
- Department of Chemistry G. Ciamician
- University of Bologna
- 40126 Bologna
- Italy
| | - Oleksii Shemchuk
- Department of Chemistry G. Ciamician
- University of Bologna
- 40126 Bologna
- Italy
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Casali L, Mazzei L, Shemchuk O, Honer K, Grepioni F, Ciurli S, Braga D, Baltrusaitis J. Smart urea ionic co-crystals with enhanced urease inhibition activity for improved nitrogen cycle management. Chem Commun (Camb) 2018; 54:7637-7640. [DOI: 10.1039/c8cc03777a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A smart ionic co-crystal of urea with KCl and ZnCl2, obtainedviamechanochemical and solution methods has been proven to be a very efficient urease inhibitor and to provide soil nutrients to complement N supply.
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Affiliation(s)
- Lucia Casali
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Via F. Selmi 2
- 40126 Bologna
| | - Luca Mazzei
- Laboratory of Bioinorganic Chemistry
- Department of Pharmacy and Biotechnology
- University of Bologna
- Viale Giuseppe Fanin 40
- 40127 Bologna
| | - Oleksii Shemchuk
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Via F. Selmi 2
- 40126 Bologna
| | - Kenneth Honer
- Department of Chemical and Biomolecular Engineering, Lehigh University
- 111 Research drive
- Bethlehem
- USA
| | - Fabrizia Grepioni
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Via F. Selmi 2
- 40126 Bologna
| | - Stefano Ciurli
- Laboratory of Bioinorganic Chemistry
- Department of Pharmacy and Biotechnology
- University of Bologna
- Viale Giuseppe Fanin 40
- 40127 Bologna
| | - Dario Braga
- Molecular Crystal Engineering Laboratory
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Via F. Selmi 2
- 40126 Bologna
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University
- 111 Research drive
- Bethlehem
- USA
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Abstract
Ionic co-crystals (ICCs) of l- and dl-histidine with CaCl2, CaBr2 and CaI2 were prepared by mechanochemical and solution methods and were structurally characterized by either single crystal or powder X-ray diffraction methods.
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Affiliation(s)
- O. Shemchuk
- Dipartimento di Chimica “Giacomo Ciamician”
- Università degli Studi di Bologna
- 40126 Bologna
- Italy
| | - L. Degli Esposti
- Institute of Science and Technology for Ceramics (ISTEC)
- National Research Council (CNR)
- 48018 Faenza (RA)
- Italy
| | - F. Grepioni
- Dipartimento di Chimica “Giacomo Ciamician”
- Università degli Studi di Bologna
- 40126 Bologna
- Italy
| | - D. Braga
- Dipartimento di Chimica “Giacomo Ciamician”
- Università degli Studi di Bologna
- 40126 Bologna
- Italy
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