1
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Structures of spiropyrans exhibiting photochromic properties in the solid state. Russ Chem Bull 2022. [DOI: 10.1007/s11172-021-3320-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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Malinowska M, Kozlowska M, Hryniewicka A, Morzycki JW. New olefin metathesis catalyst bearing N-mesitylimidazole and nitrate ligands – Synthesis, activity, and performance in aqueous media. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.06.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Zieliński A, Szczepaniak G, Gajda R, Woźniak K, Trzaskowski B, Vidović D, Kajetanowicz A, Grela K. Ruthenium Olefin Metathesis Catalysts Systematically Modified in Chelating Benzylidene Ether Fragment: Experiment and Computations. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Adam Zieliński
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Grzegorz Szczepaniak
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Roman Gajda
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Krzysztof Woźniak
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Bartosz Trzaskowski
- Centre of New Technologies University of Warsaw S. Banacha 2c 02‐097 Warsaw Poland
| | - Dragoslav Vidović
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Karol Grela
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01‐224 Warsaw Poland
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4
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Schultze C, Schmidt B. Prenylcoumarins in One or Two Steps by a Microwave-Promoted Tandem Claisen Rearrangement/Wittig Olefination/Cyclization Sequence. J Org Chem 2018; 83:5210-5224. [DOI: 10.1021/acs.joc.8b00667] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Christiane Schultze
- Universitaet Potsdam, Institut fuer Chemie, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam-Golm, Germany
| | - Bernd Schmidt
- Universitaet Potsdam, Institut fuer Chemie, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam-Golm, Germany
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5
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Khan TA, Sheoran M, Nikhil Raj M V, Jain S, Gupta D, Naik SG. Screening of biologically important Zn 2+ by a chemosensor with fluorescent turn on-off mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:176-182. [PMID: 28818764 DOI: 10.1016/j.saa.2017.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 08/07/2017] [Indexed: 06/07/2023]
Abstract
Reported herein the synthesis, characterization and biologically important zinc ion binding propensity of a weakly fluorescent chemosensor, 4-methyl-2,6-bis((E)-(2-(4-phenylthiazol-2-yl)hydrazono)methyl)phenol (1). 1H NMR spectroscopic titration experiment reveals the binding knack of 1 to the essential Zn2+. The photo-physical studies of 1 exhibit an enhancement in the fluorescence by several folds upon binding with the zinc ions attributed to PET-off process, with a binding constant value of 5.22×103M-1. 1 exhibits an excellent detection range for Zn2+ with lower detection limit value of 2.31×10-8M. The selectivity of 1 was studied with various mono and divalent metal cations and it was observed that most cations either quenches the fluorescence or remains unchanged except for Cd2+, which shows a slight enhancement in fluorescence intensity of 1. The ratiometric displacement of Cd2+ ions by Zn2+ ions shows an excellent selectivity towards in-situ detection of Zn2+ ions. Photo-physical studies also support the reversible binding of 1 to Zn2+ ions having on and off mechanism in presence of EDTA. Such recognition of the biologically important zinc ions finds potential application in live cell imaging.
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Affiliation(s)
- Tanveer A Khan
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer Distt., Rajasthan 305817, India.
| | - Monika Sheoran
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer Distt., Rajasthan 305817, India
| | - Venkata Nikhil Raj M
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer Distt., Rajasthan 305817, India
| | - Surbhi Jain
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer Distt., Rajasthan 305817, India
| | - Diksha Gupta
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer Distt., Rajasthan 305817, India
| | - Sunil G Naik
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer Distt., Rajasthan 305817, India
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6
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Sterically encumbered 2,6-dibenzhydryl-4-methylphenyl derived ligand systems: synthesis and structures. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1353-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Aratikatla EK, Valkute TR, Puri SK, Srivastava K, Bhattacharya AK. Norepinephrine alkaloids as antiplasmodial agents: Synthesis of syncarpamide and insight into the structure-activity relationships of its analogues as antiplasmodial agents. Eur J Med Chem 2017; 138:1089-1105. [PMID: 28763644 DOI: 10.1016/j.ejmech.2017.07.052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 07/21/2017] [Accepted: 07/22/2017] [Indexed: 11/26/2022]
Abstract
Syncarpamide 1, a norepinephrine alkaloid isolated from the leaves of Zanthoxylum syncarpum (Rutaceae) exhibited promising antiplasmodial activities against Plasmodium falciparum with reported IC50 values of 2.04 μM (D6 clone), 3.06 μM (W2 clone) and observed by us 3.90 μM (3D7 clone) and 2.56 μM (K1 clone). In continuation of our work on naturally occurring antimalarial compounds, synthesis of syncarpamide 1 and its enantiomer, (R)-2 using Sharpless asymmetric dihydroxylation as a key step has been accomplished. In order to study structure-activity-relationship (SAR) in detail, a library of 55 compounds (3-57), which are analogues/homologues of syncarpamide 1 were synthesized by varying the substituents on the aromatic ring, by changing the stereocentre at the C-7 and/or by varying the acid groups in the ester and/or amide side chain based on the natural product lead molecule and further assayed in vitro against 3D7 and K1 strains of P. falciparum to evaluate their antiplasmodial activities. In order to study the effect of position of functional groups on antiplasmodial activity profile, a regioisomer (S)-58 of syncarpamide 1 was synthesized however, it turned out to be inactive against both the strains. Two compounds, (S)-41 and its enantiomer, (R)-42 having 3,4,5-trimethoxy cinnamoyl groups as side chains showed better antiplasmodial activity with IC50 values of 3.16, 2.28 μM (3D7) and 1.78, 2.07 μM (K1), respectively than the natural product, syncarpamide 1. Three compounds (S)-13, (S)-17, (S)-21 exhibited antiplasmodial activities with IC50 values of 6.39, 6.82, 6.41 μM against 3D7 strain, 4.27, 7.26, 2.71 μM against K1 strain and with CC50 values of 147.72, 153.0, >200 μM respectively. The in vitro antiplasmodial activity data of synthesized library suggests that the electron density and possibility of resonance in both the ester and amide side chains increases the antiplasmodial activity as compared to the parent natural product 1. The natural product syncarpamide 1 and four analogues/homologues out of the synthesized library of 55, (S)-41, (R)-42, (S)-55 and (S)-57 were assayed in vivo assay against chloroquine-resistant P. yoelii (N-67) strain of Plasmodium. However, none of the five molecules, 1, (S)-41, (R)-42, (S)-55 and (S)-57 exhibited any promising in vivo antimalarial activity against P. yoelii (N-67) strain. Compounds 4, 6, 7 and 11 showed high cytotoxicities with CC50 values of 5.87, 5.08, 6.44 and 14.04 μM, respectively. Compound 6 was found to be the most cytotoxic as compared to the standard drug, podophyllotoxin whereas compounds 4 and 7 showed comparable cytotoxicities to podophyllotoxin.
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Affiliation(s)
- Eswar K Aratikatla
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL, Pune, 411 008, India
| | - Tushar R Valkute
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, India
| | - Sunil K Puri
- Parasitology Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, 226 031, India
| | - Kumkum Srivastava
- Parasitology Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, 226 031, India
| | - Asish K Bhattacharya
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL, Pune, 411 008, India.
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8
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Trzaskowski B, Ostrowska K. A computational study of structures and catalytic activities of Hoveyda-Grubbs analogues bearing coumarin or isopropoxycoumarin moiety. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2016.12.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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9
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Remarkable Ability of the Benzylidene Ligand To Control Initiation of Hoveyda–Grubbs Metathesis Catalysts. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600435] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Trzaskowski B, Ostrowska K. Structural analogues of Hoveyda–Grubbs catalysts bearing the 1-benzofuran moiety or isopropoxy-1-benzofuran derivatives as olefin metathesis catalysts. RSC Adv 2016. [DOI: 10.1039/c6ra01194b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We have used the DFT/M06-D3 computational method to study structures and activation free energies for a series of Hoveyda–Grubbs-like catalysts with the isopropoxybenzene part replaced by 1-benzofuran and ten derivatives of isopropoxy-1-benzofuran.
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Affiliation(s)
- B. Trzaskowski
- Centre of New Technologies
- University of Warsaw
- 02-097 Warszawa
- Poland
| | - K. Ostrowska
- Faculty of Pharmacy
- Medical University of Warsaw
- 02-097 Warszawa
- Poland
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11
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Hryniewicka A, Suchodolski S, Wojtkielewicz A, Morzycki JW, Witkowski S. New metathesis catalyst bearing chromanyl moieties at the N-heterocyclic carbene ligand. Beilstein J Org Chem 2015; 11:2795-804. [PMID: 26877801 PMCID: PMC4734414 DOI: 10.3762/bjoc.11.300] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 12/09/2015] [Indexed: 11/23/2022] Open
Abstract
The synthesis of a new type of Hoveyda–Grubbs 2nd generation catalyst bearing a modified N-heterocyclic carbene ligands is reported. The new catalyst contains an NHC ligand symmetrically substituted with chromanyl moieties. The complex was tested in model CM and RCM reactions. It showed very high activity in CM reactions with electron-deficient α,β-unsaturated compounds even at 0 °C. It was also examined in more demanding systems such as conjugated dienes and polyenes. The catalyst is stable, storable and easy to purify.
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Affiliation(s)
- Agnieszka Hryniewicka
- University of Białystok, Institute of Chemistry, Ciołkowskiego Street 1K, 15-245 Białystok; Poland
| | - Szymon Suchodolski
- University of Białystok, Institute of Chemistry, Ciołkowskiego Street 1K, 15-245 Białystok; Poland
| | - Agnieszka Wojtkielewicz
- University of Białystok, Institute of Chemistry, Ciołkowskiego Street 1K, 15-245 Białystok; Poland
| | - Jacek W Morzycki
- University of Białystok, Institute of Chemistry, Ciołkowskiego Street 1K, 15-245 Białystok; Poland
| | - Stanisław Witkowski
- University of Białystok, Institute of Chemistry, Ciołkowskiego Street 1K, 15-245 Białystok; Poland
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Czajkowska-Szczykowska D, Jastrzebska I, Santillan R, Morzycki JW. The synthesis of disteroidal macrocyclic molecular rotors by an RCM approach. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Hryniewicka A, Misztalewska I, Czajkowska-Szczykowska D, Urbańczyk-Lipkowska Z, Morzycki JW, Witkowski S. New olefin metathesis catalysts bearing polyether clamp in N-heterocyclic carbenes ligands. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Grudzień K, Malinska M, Barbasiewicz M. Synthesis and Properties of Bimetallic Hoveyda–Grubbs Metathesis Catalysts. Organometallics 2012. [DOI: 10.1021/om3001372] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Krzysztof Grudzień
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093
Warsaw, Poland
| | - Maura Malinska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093
Warsaw, Poland
| | - Michał Barbasiewicz
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093
Warsaw, Poland
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