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Itoh T, Kondo F, Suzuki T, Inayoshi K, Uno T, Kubo M, Tohnai N, Miyata M. Elucidation of Substituent-Responsive Reactivities via Hierarchical and Asymmetric Assemblies in Crystalline p-Quinodimethane Derivatives. Chemistry 2023; 29:e202301327. [PMID: 37439484 DOI: 10.1002/chem.202301327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/12/2023] [Accepted: 07/12/2023] [Indexed: 07/14/2023]
Abstract
We propose a mechanism for substituent-responsive reactivities of p-quinodimethane derivatives with four ester groups through their hierarchical and asymmetric assembly modes. Four asymmetric 7,8,8-tris(methoxycarbonyl)-p-quinodimethanes with a 7-positioned ethoxycarbonyl (2 a(H)), 2'-fluoroethoxycarbonyl (2 b(F)), 2'-chloroethoxycarbonyl (2 c(Cl)), or 2'-bromoethoxycarbonyl (2 d(Br)) were synthesized and crystallized. 2 a(H), 2 b(F) and 2 d(Br) afforded only one shape crystal, while 2 c(Cl) did two polymorphic 2 c(Cl)-α and 2 c(Cl)-β. UV-irradiation induced topochemical polymerization for 2 a(H), no reactions for 2 b(F) and 2 c(Cl)-α, and [6+6] photocycloaddition dimerization for 2 c(Cl)-β and 2 d(Br). Such substituent-responsive reactivities and crystal structures were compared with those of the known symmetric 7,7,8,8-tetrakis(alkoxycarbonyl)-p-quinodimethanes such as 7,7,8,8-tetrakis(methoxycarbonyl)- (1 a(Me)-α and 1 a(Me)-β), 7,7,8,8-tetrakis(ethoxycarbonyl)- (1 b(Et)), and 7,7,8,8-tetrakis(bromoethoxycarbonyl)- (1 c(BrEt)). The comparative study clarified that the reactivities and crystal structures are classified into four types that link to each other. This linkage is understandable when we analyze the crystal structures through the following hierarchical and asymmetric assemblies; conformers, dimers, one dimensional (1D)-columns, two dimensional (2D)-sheets, and three dimensional (3D)-stacked sheets (3D-crystals). This supramolecular viewpoint is supported by intermolecular interaction energies among neighbored molecules with the density functional theory (DFT) calculation. Such research enables us to elucidate the substituent-responsive reactivities of the crystals, and reminds us of the selection of the right path in a so-called "maze game".
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Affiliation(s)
- Takahito Itoh
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie, 514-8507, Japan
| | - Fumiaki Kondo
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie, 514-8507, Japan
| | - Takumi Suzuki
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie, 514-8507, Japan
| | - Kohji Inayoshi
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie, 514-8507, Japan
| | - Takahiro Uno
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie, 514-8507, Japan
| | - Masataka Kubo
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie, 514-8507, Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Mikiji Miyata
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
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Roszak K, Piasecka M, Katrusiak A, Kacprzak K. Double helix quinine-based supergelator. SOFT MATTER 2016; 12:1368-1373. [PMID: 26701368 DOI: 10.1039/c5sm02723c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
10,11-Didehydroquinine is a simple, low molecular weight supergelator which forms, in nonpolar media, stable chiral organogels composed of unique double-helix nano-sized fibers. A novel gelation mechanism involves a hydrogen bonding network formed by an acidic alkyne proton of the Cinchona gelator and the carbonyl group of ethyl acetate used as a solvent.
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Affiliation(s)
- Kinga Roszak
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland.
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Clements M, le Roex T, Blackie M. Multicomponent Crystal Systems of Known Antimalarial Drug Molecules. ChemMedChem 2015; 10:1786-92. [PMID: 26368592 DOI: 10.1002/cmdc.201500337] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Indexed: 11/09/2022]
Abstract
Potential drug molecules are often discarded due to poor physicochemical properties and pharmacokinetic profiles. As such, research into the use of multicomponent crystal systems (such as salts and co-crystals) is currently being conducted with the aim of improving the properties of the molecule, without altering the bioactivity of the drug. Although numerous studies have been performed on a wide variety of drug molecules, research with antimalarial drug molecules seems to have been neglected. With many of the current drugs becoming inactive due to resistance, there is an urgent need to find effective drugs with good pharmacokinetic profiles. The objective of this review is therefore to determine the extent to which multicomponent crystal systems have been used in antimalarial chemotherapy and whether this method provides a viable alternative to discarding potential drug candidates.
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Affiliation(s)
- Monica Clements
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Tanya le Roex
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Margaret Blackie
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa.
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Barclay TG, Constantopoulos K, Matisons J. Nanotubes Self-Assembled from Amphiphilic Molecules via Helical Intermediates. Chem Rev 2014; 114:10217-91. [DOI: 10.1021/cr400085m] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Thomas G. Barclay
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Kristina Constantopoulos
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Janis Matisons
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
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Hisaki I, Hiraishi E, Sasaki T, Orita H, Tsuzuki S, Tohnai N, Miyata M. Crystal Structure of Quinine: The Effects of Vinyl and Methoxy Groups on Molecular Assemblies of Cinchona Alkaloids Cannot Be Ignored. Chem Asian J 2012; 7:2607-14. [DOI: 10.1002/asia.201200566] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Ichiro Hisaki
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Eri Hiraishi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Toshiyuki Sasaki
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Hideo Orita
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305‐8568 (Japan). Fax: (+81) 29‐851‐5426
| | - Seiji Tsuzuki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305‐8568 (Japan). Fax: (+81) 29‐851‐5426
| | - Norimitsu Tohnai
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Mikiji Miyata
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
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