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Zhang J, Gulyás KV, Li J, Ma M, Zhou L, Wu L, Xiong R, Erdelyi M, Zhu W, Xu Z. Unexpected effect of halogenation on the water solubility of small organic compounds. Comput Biol Med 2024; 172:108209. [PMID: 38460313 DOI: 10.1016/j.compbiomed.2024.108209] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/06/2024] [Accepted: 02/25/2024] [Indexed: 03/11/2024]
Abstract
Halogenation is an indispensable method in the structural modification of lead compounds. It is known to increase lipophilicity and is hence used to improve membrane permeability and thus bioavailability. In this study, we compare the water solubility (logS) of organohalogen compounds and their non-halogenated parent compounds using the molecular matched pair (MMP) analysis method. Unexpectedly, 19.9% of the compounds increased their water solubility upon halogenation. Iodination was observed to have the greatest effect on solubility, followed by chlorination, bromination, and fluorination. Introducing amino, hydroxyl and carboxyl groups into organohalogens improves their aqueous solubilities, whereas introducing a trifluoromethyl group has the opposite effect. According to our quantum chemical calculations, the increased water solubility upon halogenation is, at least partially, attributed to an increased polarity and polarizability. These results improve our understanding of the influence of halogenation on bioactivity.
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Affiliation(s)
- Jianfang Zhang
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210046, China; State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Kinga Virág Gulyás
- Department of Chemistry - BMC, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Jintian Li
- State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Minfei Ma
- State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Liping Zhou
- State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Leyun Wu
- State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Ruisheng Xiong
- Department of Chemistry - BMC, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Mate Erdelyi
- Department of Chemistry - BMC, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Weiliang Zhu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210046, China; State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
| | - Zhijian Xu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210046, China; State Key Laboratory of Drug Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
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Umereweneza D, Atilaw Y, Peintner S, Rudenko A, Bourgard C, Xiong R, Muhizi T, Sunnerhagen P, Gogoll A, Erdelyi M. Macrocyclic Pyrrolizidine Alkaloids and Silphiperfolanol Angelate Esters from Solanecio mannii. European J Org Chem 2023. [DOI: 10.1002/ejoc.202201280] [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: 01/13/2023]
Affiliation(s)
| | - Yoseph Atilaw
- Uppsala Universitet Department of Chemistry - BMC SWEDEN
| | | | - Anastasia Rudenko
- University of Gothenburg: Goteborgs Universitet Department of Chemistry and Molecular Biology SWEDEN
| | - Catarina Bourgard
- University of Gothenburg: Goteborgs Universitet Department of Chemistry and Molecular Biology SWEDEN
| | - Ruisheng Xiong
- Uppsala Universitet Department of Chemistry - BMC SWEDEN
| | | | - Per Sunnerhagen
- University of Gothenburg: Goteborgs Universitet Department of Chemistry and Molecular Biology SWEDEN
| | - Adolf Gogoll
- Uppsala Universitet Department of Chemistry - BMC SWEDEN
| | - Mate Erdelyi
- Uppsala University Department of Chemistry - BMC Husargatan 3 75237 Uppsala SWEDEN
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Abstract
Conformational analysis is central to the design of bioactive molecules. It is particularly challenging for macrocycles due to noncovalent transannular interactions, steric interactions, and ring strain that are often coupled. Herein, we simulated the conformations of five macrocycles designed to express a progression of increasing complexity in environment-dependent intramolecular interactions and verified the results against NMR measurements in chloroform and dimethyl sulfoxide. Molecular dynamics using an explicit solvent model, but not the Monte Carlo method with implicit solvation, handled both solvents correctly. Refinement of conformations at the ab initio level was fundamental to reproducing the experimental observations─standard state-of-the-art molecular mechanics force fields were insufficient. Our simulations correctly predicted the intramolecular interactions between side chains and the macrocycle and revealed an unprecedented solvent-induced conformational switch of the macrocyclic ring. Our results provide a platform for the rational, prospective design of molecular chameleons that adapt to the properties of the environment.
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Arkhypchuk AI, Xiong R, Borbas KE. Investigation of the demetallation of 10-aryl substituted synthetic chlorins under acidic conditions. J Inorg Biochem 2020; 205:110979. [PMID: 31951912 DOI: 10.1016/j.jinorgbio.2019.110979] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/11/2019] [Accepted: 12/24/2019] [Indexed: 11/30/2022]
Abstract
The acidic demetallation of a series of sparsely substituted Zn(II) chlorins is reported. The chlorins were functionalized in the 10-position with substituents ranging from strongly electron donating mesityl and p-methoxyphenyl to electron-withdrawing p-nitrophenyl and pentafluorophenyl groups. The demetallation kinetics were investigated using UV-Visible absorption spectroscopy. Demetallation was carried out by exposing the metallochlorins dissolved in CH2Cl2 to an excess of trifluoroacetic acid. Reasonable correlation was found between the Hammett constant of the 10-substituent and the rate constant of the loss of the metal ion. The largest differences were observed between the p-methoxyphenyl and p-nitrophenyl-substituted Zn(II) chlorins, undergoing loss of Zn(II) with pseudo first order rate constants of 0.0789 × 10-3 and 3.70 × 10-3 min-1, respectively. Taken together, these data establish the dramatic influence even subtle changes can have in altering the electronic properties of chlorins, which in turn impacts metallochlorin function.
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Affiliation(s)
- Anna I Arkhypchuk
- Department of Chemistry, Ångström Laboratory, Box 523, Uppsala University, 75120 Uppsala, Sweden
| | - Ruisheng Xiong
- Department of Chemistry, Ångström Laboratory, Box 523, Uppsala University, 75120 Uppsala, Sweden
| | - K Eszter Borbas
- Department of Chemistry, Ångström Laboratory, Box 523, Uppsala University, 75120 Uppsala, Sweden.
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Abstract
Unlike N-confused porphyrins which are well-known and extensively studied tetrapyrroles, N-confused hydroporphyrins are almost unknown, largely because so far they have resisted attempts at rational synthesis. Here, we report our efforts towards the total synthesis of N-confused hydroporphyrins. We have prepared N-confused building blocks analogous to the non-N-confused substrates in the Lindsey synthesis of sparsely substituted chlorins. We have systematically flipped the A, B and C pyrrole rings in the dipyrrolic precursors of the target N-confused macrocycles, preparing in total an N-confused “Western half” (tetrahydrodipyrrin) and two N-confused “Eastern halves” (brominated formyldipyrromethanes). These were subjected to a range of cyclization conditions. While we successfully isolated and identified three macrocyclic products, none of these proved to be the desired N-confused hydroporphyrin.
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Affiliation(s)
- Ruisheng Xiong
- Department of Chemistry, Ångström Laboratory, Box 523, Uppsala University, 75120 Uppsala, Sweden
| | - Anna I. Arkhypchuk
- Department of Chemistry, Ångström Laboratory, Box 523, Uppsala University, 75120 Uppsala, Sweden
| | - K. Eszter Borbas
- Department of Chemistry, Ångström Laboratory, Box 523, Uppsala University, 75120 Uppsala, Sweden
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Xiong R, Mara D, Liu J, Van Deun R, Borbas KE. Excitation- and Emission-Wavelength-Based Multiplex Spectroscopy Using Red-Absorbing Near-Infrared-Emitting Lanthanide Complexes. J Am Chem Soc 2018; 140:10975-10979. [DOI: 10.1021/jacs.8b07609] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ruisheng Xiong
- Department of Chemistry, Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, 75120 Uppsala, Sweden
| | - Dimitrije Mara
- L3−Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, B-9000 Gent, Belgium
| | - Jing Liu
- L3−Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, B-9000 Gent, Belgium
| | - Rik Van Deun
- L3−Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, B-9000 Gent, Belgium
| | - K. Eszter Borbas
- Department of Chemistry, Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, 75120 Uppsala, Sweden
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Abstract
Bromoporphyrins were prepared by the metal-mediated self-condensation of brominated 1-formyldipyrromethanes. Depending on the conditions, Mg(II)-2,12-dibromoporphyrin and Mg(II)-2-bromoporphyrin could be obtained in up to 11% and 17% isolated yield, respectively. Zn(II) was also a viable templating metal. The positions of the bromine substituents were confirmed by 2D-NMR spectroscopic analysis and the X-ray crystal structure of a derivative. Suzuki and Sonogashira reactions of the bromoporphyrins yielded 2-substituted or 2,12-disubstituted porphyrins with red-shifted absorption and emission spectra. This method provides access to the minimalist core of β-mono- and β,β'-disubstituted porphyrins from readily available starting materials.
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Affiliation(s)
- Anna-Bea Bornhof
- Department of Chemistry, Ångström Laboratory, Uppsala University , Box 523, 751 20 Uppsala, Sweden
| | - Ruisheng Xiong
- Department of Chemistry, Ångström Laboratory, Uppsala University , Box 523, 751 20 Uppsala, Sweden
| | - K Eszter Borbas
- Department of Chemistry, Ångström Laboratory, Uppsala University , Box 523, 751 20 Uppsala, Sweden
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Xiong R, Bornhof A, Arkhypchuk AI, Orthaber A, Borbas KE. Furan- and Thiophene-Based Auxochromes Red-shift Chlorin Absorptions and Enable Oxidative Chlorin Polymerizations. Chemistry 2017; 23:4089-4095. [PMID: 27859811 PMCID: PMC5396321 DOI: 10.1002/chem.201604655] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 10/03/2016] [Indexed: 11/08/2022]
Abstract
The de novo syntheses of chemically stable chlorins with five-membered heterocyclic (furane, thiophene, formylfurane and formylthiophene) substituents in selected meso- and β-positions are reported. Heterocycle incorporation in the 3- and 13-positions shifted the chlorin absorption and emission to the red (up to λem =680 nm), thus these readily incorporated substituents function analogously to auxochromes present in chlorophylls, for example, formyl and vinyl groups. Photophysical, theoretical and X-ray crystallographic experiments revealed small but significant differences between the behavior of the furan- and the thiophene-based auxochromes. Four regioisomeric bis-thienylchlorins (3,10; 3,13, 3,15 and 10,15) were oxidatively electropolymerized; the chlorin monomer geometry had a profound impact on the polymerization efficiency and the electrochemical properties of the resulting material. Chemical co-polymerization of 3,13-bis-thienylchlorin with 3-hexylthiophene yielded an organic-soluble red-emitting polymer.
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Affiliation(s)
- Ruisheng Xiong
- Department of ChemistryÅngström LaboratoryUppsala University, Box 52375120UppsalaSweden
| | - Anna‐Bea Bornhof
- Department of ChemistryÅngström LaboratoryUppsala University, Box 52375120UppsalaSweden
| | - Anna I. Arkhypchuk
- Department of ChemistryÅngström LaboratoryUppsala University, Box 52375120UppsalaSweden
| | - Andreas Orthaber
- Department of ChemistryÅngström LaboratoryUppsala University, Box 52375120UppsalaSweden
| | - K. Eszter Borbas
- Department of ChemistryÅngström LaboratoryUppsala University, Box 52375120UppsalaSweden
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Xiong R, Bornhof AB, Arkhypchuk AI, Orthaber A, Borbas KE. Back Cover: Furan- and Thiophene-Based Auxochromes Red-shift Chlorin Absorptions and Enable Oxidative Chlorin Polymerizations (Chem. Eur. J. 17/2017). Chemistry 2017. [DOI: 10.1002/chem.201605732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ruisheng Xiong
- Department of Chemistry; Ångström Laboratory; Uppsala University, Box 523; 75120 Uppsala Sweden
| | - Anna-Bea Bornhof
- Department of Chemistry; Ångström Laboratory; Uppsala University, Box 523; 75120 Uppsala Sweden
| | - Anna I. Arkhypchuk
- Department of Chemistry; Ångström Laboratory; Uppsala University, Box 523; 75120 Uppsala Sweden
| | - Andreas Orthaber
- Department of Chemistry; Ångström Laboratory; Uppsala University, Box 523; 75120 Uppsala Sweden
| | - K. Eszter Borbas
- Department of Chemistry; Ångström Laboratory; Uppsala University, Box 523; 75120 Uppsala Sweden
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Abstract
The synthesis and chemical, photophysical and electrochemical characterisation of directly meso–meso- or meso-β-linked hydroporphyrin (chlorin) dimers is reported.
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Affiliation(s)
- Ruisheng Xiong
- Department of Chemistry
- Ångström Laboratory
- Uppsala University
- 75120 Uppsala
- Sweden
| | - Anna I. Arkhypchuk
- Department of Chemistry
- Ångström Laboratory
- Uppsala University
- 75120 Uppsala
- Sweden
| | - Daniel Kovacs
- Department of Chemistry
- Ångström Laboratory
- Uppsala University
- 75120 Uppsala
- Sweden
| | - Andreas Orthaber
- Department of Chemistry
- Ångström Laboratory
- Uppsala University
- 75120 Uppsala
- Sweden
| | - K. Eszter Borbas
- Department of Chemistry
- Ångström Laboratory
- Uppsala University
- 75120 Uppsala
- Sweden
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Abstract
Hydroporphyrin-linked lanthanide complexes with variations in tetrapyrrole structure, linker length and mode of attachment are reported.
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Affiliation(s)
- Ruisheng Xiong
- Department of Chemistry – BMC
- Uppsala University
- 75123 Uppsala
- Sweden
| | - Julien Andres
- Department of Chemistry – BMC
- Uppsala University
- 75123 Uppsala
- Sweden
| | - Kira Scheffler
- Department of Chemistry – BMC
- Uppsala University
- 75123 Uppsala
- Sweden
| | - K. Eszter Borbas
- Department of Chemistry – BMC
- Uppsala University
- 75123 Uppsala
- Sweden
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13
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Zhang Q, Zhao QJ, Xiong RS, Li JF, Shen JS. [Research progress of anti-influenza virus agents]. Yao Xue Xue Bao 2010; 45:289-299. [PMID: 21351503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Influenza is a major threat to millions of people worldwide. Vaccines and antiviral agents are two main options available to reduce the impact of the influenza virus, while anti-influenza agents are the most effective means to prevent the transmission of the highly contagious virus and to treat the epidemics of disease. At present, four anti-influenza agents have been approved by the FDA for the treatment of influenza, including two M2 protein ion channel inhibitors-amantadine and rimantadine and two neuraminidase inhibitors-zanamivir and oseltamivir. Arbidol hydrochloride, launched in Russia, is a potent inhibitor of influenza virus, too. Neuraminidase inhibitors could be classified generally by structure into six different kinds: sialic acid derivatives, benzoic acid derivatives, cyclohexene derivatives, cyclopentane derivatives, pyrrolidine derivatives and natural products. In this paper, recent progress in the research of the action mechanisms and structure-activity relationships of these anti-influenza virus agents were reviewed.
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Affiliation(s)
- Qiang Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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Zhao Q, Lou Y, Xiong R, Li H, Shen J. Regioselective synthesis of 4azido-Neu2en5,7Ac(2)1Me and its intramolecular transformation to 4azido-Neu2en5,9Ac(2)1Me. Carbohydr Res 2008; 343:2459-62. [PMID: 18635158 DOI: 10.1016/j.carres.2008.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 06/11/2008] [Accepted: 06/12/2008] [Indexed: 11/30/2022]
Abstract
Methyl 5-N-acetyl-7-O-acetyl-4-azido-2,3-didehydro-2,4-dideoxy-neuraminic acid (4azido-Neu2en5,7 Ac(2)1Me) was synthesized regioselectively starting from 4azido-Neu2en5Ac1Me in high yield. The transformation of 4azido-Neu2en5,7Ac(2)1Me to the corresponding thermodynamically stable 4azido-Neu2en5,9Ac(2)1Me via intramolecular acetyl migration was confirmed by single-crystal X-ray diffraction analysis. The proposed rearrangement mechanism is discussed.
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Affiliation(s)
- Qingjie Zhao
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, PR China
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