51
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Multiple Virtual Screening Strategies for the Discovery of Novel Compounds Active Against Dengue Virus: A Hit Identification Study. Sci Pharm 2019. [DOI: 10.3390/scipharm88010002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Dengue infection is caused by a mosquito-borne virus, particularly in children, which may even cause death. No effective prevention or therapeutic agents to cure this disease are available up to now. The dengue viral envelope (E) protein was discovered to be a promising target for inhibition in several steps of viral infection. Structure-based virtual screening has become an important technique to identify first hits in a drug screening process, as it is possible to reduce the number of compounds to be assayed, allowing to save resources. In the present study, pharmacophore models were generated using the common hits approach (CHA), starting from trajectories obtained from molecular dynamics (MD) simulations of the E protein complexed with the active inhibitor, flavanone (FN5Y). Subsequently, compounds presented in various drug databases were screened using the LigandScout 4.2 program. The obtained hits were analyzed in more detail by molecular docking, followed by extensive MD simulations of the complexes. The highest-ranked compound from this procedure was then synthesized and tested on its inhibitory efficiency by experimental assays.
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52
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Topić F, Lisac K, Arhangelskis M, Rissanen K, Cinčić D, Friščić T. Cocrystal trimorphism as a consequence of the orthogonality of halogen- and hydrogen-bonds synthons. Chem Commun (Camb) 2019; 55:14066-14069. [PMID: 31693025 DOI: 10.1039/c9cc06735c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
True trimorphic cocrystals, i.e. multi-component molecular crystals of identical composition that exhibit three polymorphic structures, are exceedingly rare and so far no halogen-bonded cocrystal system has been reported to exhibit trimorphism. Here we describe a unique example of a trimorphic cocrystal exhibiting both hydrogen and halogen bonds in which the differences between polymorphs reveal their orthogonality, evident by the apparently independent variation of well-defined hydrogen- and halogen-bonded motifs.
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Affiliation(s)
- Filip Topić
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., H3A 0B8, Montreal, Canada.
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53
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Moaven S, Andrews MC, Polaske TJ, Karl BM, Unruh DK, Bosch E, Bowling NP, Cozzolino AF. Triple-Pnictogen Bonding as a Tool for Supramolecular Assembly. Inorg Chem 2019; 58:16227-16235. [PMID: 31718176 DOI: 10.1021/acs.inorgchem.9b02761] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Supramolecular assembly utilizing simultaneous formation of three pnictogen bonds around a single antimony vertex was explored via X-ray crystallography, solution NMR, and computational chemistry. An arylethynyl (AE) ligand was designed to complement the three electrophilic regions around the Sb compound. Though solution studies reveal large binding constants for individual pyridyl units with the Sb donor, the rigidity and prearrangement of the AE acceptor proved necessary to achieve simultaneous binding of three acceptors to the Sb-centered pnictogen-bond donor. Calculations and X-ray structures suggest that negative cooperativity upon sequential binding of three acceptors to a Sb center limits the utility of triple-pnictogen bonding pyridyl acceptors. These limitations can be negated, however, when positive cooperativity is designed into a complementary acceptor ligand.
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Affiliation(s)
- Shiva Moaven
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Miranda C Andrews
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Thomas J Polaske
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Brian M Karl
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Daniel K Unruh
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Eric Bosch
- Chemistry Department , Missouri State University , 901 S. National Ave. , Springfield , Missouri 65897 , United States
| | - Nathan P Bowling
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Anthony F Cozzolino
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
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54
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Helmecke L, Spittler M, Baumgarten K, Czekelius C. Metal-Free Activation of C–I Bonds and Perfluoroalkylation of Alkenes with Visible Light Using Phosphine Catalysts. Org Lett 2019; 21:7823-7827. [DOI: 10.1021/acs.orglett.9b02812] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Lucas Helmecke
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Michael Spittler
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Kai Baumgarten
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Constantin Czekelius
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
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55
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Eraković M, Cinčić D, Molčanov K, Stilinović V. A Crystallographic Charge Density Study of the Partial Covalent Nature of Strong N⋅⋅⋅Br Halogen Bonds. Angew Chem Int Ed Engl 2019; 58:15702-15706. [PMID: 31441965 DOI: 10.1002/anie.201908875] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Indexed: 12/21/2022]
Abstract
The covalent nature of strong N-Br⋅⋅⋅N halogen bonds in a cocrystal (2) of N-bromosuccinimide (NBS) with 3,5-dimethylpyridine (lut) was determined from X-ray charge density studies and compared to a weak N-Br⋅⋅⋅O halogen bond in pure crystalline NBS (1) and a covalent bond in bis(3-methylpyridine)bromonium cation (in its perchlorate salt (3). In 2, the donor N-Br bond is elongated by 0.0954 Å, while the Br⋅⋅⋅acceptor distance of 2.3194(4) is 1.08 Å shorter than the sum of the van der Waals radii. A maximum electron density of 0.38 e Å-3 along the Br⋅⋅⋅N halogen bond indicates a considerable covalent contribution to the total interaction. This value is intermediate to 0.067 e Å-3 for the Br⋅⋅⋅O contact in 1, and approximately 0.7 e Å-3 in both N-Br bonds of the bromonium cation in 3. A calculation of the natural bond order charges of the contact atoms, and the σ*(N1-Br) population of NBS as a function of distance between NBS and lut, have shown that charge transfer becomes significant at a Br⋅⋅⋅N distance below about 3 Å.
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Affiliation(s)
- Mihael Eraković
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, HR-10000, Zagreb, Croatia
| | - Dominik Cinčić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000, Zagreb, Croatia
| | - Krešimir Molčanov
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, HR-10000, Zagreb, Croatia
| | - Vladimir Stilinović
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000, Zagreb, Croatia
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56
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Eraković M, Cinčić D, Molčanov K, Stilinović V. A Crystallographic Charge Density Study of the Partial Covalent Nature of Strong N⋅⋅⋅Br Halogen Bonds. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908875] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mihael Eraković
- Department of Physical Chemistry Rudjer Bošković Institute Bijenička 54 HR-10000 Zagreb Croatia
| | - Dominik Cinčić
- Department of Chemistry Faculty of Science University of Zagreb Horvatovac 102a HR-10000 Zagreb Croatia
| | - Krešimir Molčanov
- Department of Physical Chemistry Rudjer Bošković Institute Bijenička 54 HR-10000 Zagreb Croatia
| | - Vladimir Stilinović
- Department of Chemistry Faculty of Science University of Zagreb Horvatovac 102a HR-10000 Zagreb Croatia
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57
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Ardila‐Fierro KJ, Bolm C, Hernández JG. Mechanosynthesis of Odd-Numbered Tetraaryl[n]cumulenes. Angew Chem Int Ed Engl 2019; 58:12945-12949. [PMID: 31265746 PMCID: PMC6773223 DOI: 10.1002/anie.201905670] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Indexed: 12/31/2022]
Abstract
A mechanochemical synthesis of one-dimensional carbon allotrope carbyne model compounds, namely tetraaryl[n]cumulenes (n=3, 5) was realized. Central for the mechanosynthesis of the cumulenic carbon nanostructures were the development of a mechanochemical Favorskii alkynylation-type reaction and the implementation of a solvent-free, acid-free reductive elimination with tin(II) chloride by ball milling.
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Affiliation(s)
| | - Carsten Bolm
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - José G. Hernández
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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58
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Ardila‐Fierro KJ, Bolm C, Hernández JG. Mechanosynthesis of Odd‐Numbered Tetraaryl[
n
]cumulenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905670] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Carsten Bolm
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - José G. Hernández
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
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59
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Wang C, Mo Y. Classical Electrostatic Interaction Is the Origin for Blue-Shifting Halogen Bonds. Inorg Chem 2019; 58:8577-8586. [DOI: 10.1021/acs.inorgchem.9b00875] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Changwei Wang
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Yirong Mo
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
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60
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Bose A, Mal P. Mechanochemistry of supramolecules. Beilstein J Org Chem 2019; 15:881-900. [PMID: 31019581 PMCID: PMC6466741 DOI: 10.3762/bjoc.15.86] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 03/22/2019] [Indexed: 12/21/2022] Open
Abstract
The urge to use alternative energy sources has gained significant attention in the eye of chemists in recent years. Solution-based traditional syntheses are extremely useful, although they are often associated with certain disadvantages like generation of waste as by-products, use of large quantities of solvents which causes environmental hazard, etc. Contrastingly, achieving syntheses through mechanochemical methods are generally time-saving, environmentally friendly and more economical. This review is written to shed some light on supramolecular chemistry and the synthesis of various supramolecules through mechanochemistry.
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Affiliation(s)
- Anima Bose
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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61
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Juneja N, Unruh DK, Bosch E, Groeneman RH, Hutchins KM. Effects of dynamic pedal motion and static disorder on thermal expansion within halogen-bonded co-crystals. NEW J CHEM 2019. [DOI: 10.1039/c9nj04833b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermal expansion is investigated for halogen-bonded co-crystals containing molecules that exhibit dynamic motion, lack motion ability, or experience static disorder.
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Affiliation(s)
- Navkiran Juneja
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Daniel K. Unruh
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Eric Bosch
- Department of Chemistry
- Missouri State University
- Springfield
- USA
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62
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Wang C, Aman Y, Ji X, Mo Y. Tetrel bonding interaction: an analysis with the block-localized wavefunction (BLW) approach. Phys Chem Chem Phys 2019; 21:11776-11784. [DOI: 10.1039/c9cp01710k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this study, fifty-one iconic tetrel bonding complexes were studied using the block localized wave function (BLW) method which can derive the self-consistent wavefunction for an electron-localized (diabatic) state where charge transfer is strictly deactivated.
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Affiliation(s)
- Changwei Wang
- Key Laboratory for Macromolecular Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Yama Aman
- Department of Chemistry
- Western Michigan University
- Kalamazoo
- USA
| | - Xiaoxi Ji
- Department of Chemistry
- Western Michigan University
- Kalamazoo
- USA
| | - Yirong Mo
- Department of Chemistry
- Western Michigan University
- Kalamazoo
- USA
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63
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Nemec V, Fotović L, Vitasović T, Cinčić D. Halogen bonding of the aldehyde oxygen atom in cocrystals of aromatic aldehydes and 1,4-diiodotetrafluorobenzene. CrystEngComm 2019. [DOI: 10.1039/c9ce00340a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Novel halogen bonded cocrystals of aromatic aldehydes have been synthesized. We present the halogen bond acceptor potential of the aldehyde group oxygen atom in competition with the hydroxy, methoxy and pyridine groups.
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Affiliation(s)
- Vinko Nemec
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
- Croatia
| | - Luka Fotović
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
- Croatia
| | - Toni Vitasović
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
- Croatia
| | - Dominik Cinčić
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
- Croatia
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