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Archana B, Sreedaran S. Synthesis, Characterization, DNA Binding and Cleavage Studies, In-Vitro Antimicrobial, Cytotoxicity Assay of New Manganese(III) Complexes of N-Functionalized Macrocyclic Cyclam Based Schiff Base Ligands. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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New cyclam based Zn(II) complexes: effect of flexibility and para substitution on DNA binding, in vitro cytotoxic studies and antimicrobial activities. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02091-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ct-DNA binding and antimicrobial studies of MnII and FeII macrocyclic complexes. J INCL PHENOM MACRO 2022. [DOI: 10.1007/s10847-022-01150-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yasmin S, Rabi S, Chakraborty A, Kwong HC, Tiekink ERT, Roy TG. [ rac-1,8-Bis(2-carbamoyleth-yl)-5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-deca-ne]copper(II) di-acetate tetra-hydrate: crystal structure and Hirshfeld surface analysis. Acta Crystallogr E Crystallogr Commun 2021; 77:1316-1322. [PMID: 34925906 PMCID: PMC8647745 DOI: 10.1107/s2056989021012184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 11/10/2022]
Abstract
The title CuII macrocyclic complex salt tetra-hydrate, [Cu(C22H46N6O2)](C2H3O2)2·4H2O, sees the metal atom located on a centre of inversion and coordinated within a 4 + 2 (N4O2) tetra-gonally distorted coordination geometry; the N atoms are derived from the macrocycle and the O atoms from weakly associated [3.2048 (15) Å] acetate anions. Further stability to the three-ion aggregate is provided by intra-molecular amine-N-H⋯O(carboxyl-ate) hydrogen bonds. Hydrogen bonding is also prominent in the mol-ecular packing with amide-N-H⋯O(amide) inter-actions, leading to eight-membered {⋯HNCO}2 synthons, amide-N-H⋯O(water), water-O-H⋯O(carboxyl-ate) and water-O-H⋯O(water) hydrogen bonds featuring within the three-dimensional architecture. The calculated Hirshfeld surfaces for the individual components of the asymmetric unit differentiate the water mol-ecules owing to their distinctive supra-molecular association. For each of the anion and cation, H⋯H contacts predominate (50.7 and 65.2%, respectively) followed by H⋯O/O⋯H contacts (44.5 and 29.9%, respectively).
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Affiliation(s)
- Sabina Yasmin
- Department of Chemistry, University of Chittagong, Faculty of Science, Chattogarm-4331, Bangladesh
| | - Saswata Rabi
- Department of Chemistry, Chittagong University of Engineering & Technology, Faculty of Engineering & Technology, Chattogarm-4349, Bangladesh
| | - Avijit Chakraborty
- Department of Chemistry, University of Chittagong, Faculty of Science, Chattogarm-4331, Bangladesh
| | - Huey Chong Kwong
- Research Centre for Crystalline Materials, School of Medical and Life Sciences, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Edward R. T. Tiekink
- Research Centre for Crystalline Materials, School of Medical and Life Sciences, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Tapashi Ghosh Roy
- Department of Chemistry, University of Chittagong, Faculty of Science, Chattogarm-4331, Bangladesh
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Dey L, Rabi S, Begum ZA, Takase T, Rahman IMM, Tiekink ERT, Roy TG. Redetermination of the crystal structure of (2E,4Z,13E,15Z)-3,5,14,16-tetramethyl-2,6,13,17-tetraazatricyclo[16.4.0.07,12]docosa-1(22),2,4,7,9,11,13,15,18,20-decaene, C22H24N4. Z KRIST-NEW CRYST ST 2021. [DOI: 10.1515/ncrs-2021-0244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C22H24N4, triclinic,
P
1
‾
$P‾{1}$
(no. 2), a = 9.217(4) Å, b = 9.774(4) Å, c = 10.843(4) Å, α = 96.770(2)°, β = 101.791(5)°, γ = 105.873(3)°, V = 903.9(6) Å3, Z = 2, R
gt
(F) = 0.0391, wR
ref
(F
2) = 0.1069, T = 93(2) K.
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Affiliation(s)
- Lucky Dey
- Department of Chemistry , Faculty of Science, University of Chittagong , Chattogram 4331 , Bangladesh
| | - Saswata Rabi
- Department of Chemistry , Faculty of Science, University of Chittagong , Chattogram 4331 , Bangladesh
- Department of Chemistry , Faculty of Engineering & Technology, Chittagong University of Engineering & Technology , Chattogram 4349 , Bangladesh
| | - Zinnat A. Begum
- Institute of Environmental Radioactivity, Fukushima University , 1 Kanayagawa, Fukushima City , Fukushima 960-1296 , Japan
- Department of Civil Engineering , Southern University Bangladesh , Arefin Nagar, Bayezid Bostami , Chattogram 4210 , Bangladesh
| | - Tsugiko Takase
- Department of Natural Sciences and Informatics , Fukushima University , 1 Kanayagawa , Fukushima 960-1296 , Japan
| | - Ismail M. M. Rahman
- Institute of Environmental Radioactivity, Fukushima University , 1 Kanayagawa, Fukushima City , Fukushima 960-1296 , Japan
| | - Edward R. T. Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University , 47500 Bandar Sunway , Selangor Darul Ehsan , Malaysia
| | - Tapashi Ghosh Roy
- Department of Chemistry , Faculty of Science, University of Chittagong , Chattogram 4331 , Bangladesh
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Mudavath R, Vuradi RK, Bathini U, Narsimha N, Kunche S, Sunitha S, Ch SD. Design, synthesis, in vitro anticancer, antioxidant and antibacterial activity; DNA/BSA binding, photoleavage and docking studies of Cu(II) ternary metal complexes. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2019; 38:874-900. [PMID: 31148514 DOI: 10.1080/15257770.2019.1618470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Three mononuclear, mixed ligand ternary Cu(II) complexes of 3-((Z)-1-(2-hydroxyphenylimino)ethyl)-4-hydroxy-6-methyl-2H-pyran-2-one (HEHMP) viz; [Cu-(Phen) (HEHMP)] (1a), [Cu-(Bpy)(HEHMP)] (1 b) and [Cu-Bpy(NCS)(HEHMP)] (1c) were synthesized and characterized by data obtained from various spectral techniques. The binding affinities of these complexes with calf thymus DNA (CT-DNA) and bovine serum albumin (BSA) protein were explored by absorption and fluorescence quenching titrations. The results indicated strong affinity of the title compounds to bind with both CT-DNA and BSA. The antioxidant properties of the synthesized compounds evaluated by free-radical scavenging method using spectrophotometric technique indicated their affirmative potential activity. Gel electrophoresis experiments revealed the efficacy of metal complexes in resulting the cleavage of pBR322 supercoiled DNA. In vitro cytotoxicity studies of these complexes evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay against HeLa and MCF-7 cancer cell lines indicated relatively high effectiveness of the complex 1c. Confocal microscopy signified the potential of the complexes to induce apoptosis in HeLa cell lines. In addition, the antibacterial activity of the compounds carried out by disc diffusion method revealed significantly enhanced antibacterial activity in Cu (II) ternary complexes compared to the activity of ligands in unbound form signifying the implicit role of metal ion in inducing lipophilic character.
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Affiliation(s)
- Ravi Mudavath
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
| | - Ravi Kumar Vuradi
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
| | - Ushaiah Bathini
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
| | - Nagula Narsimha
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
| | - Sudeepa Kunche
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
| | - Snt Sunitha
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
| | - Sarala Devi Ch
- Department of Chemistry, Osmania University , Hyderabad , Telangana , India
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Suganthi S, Sivaraj R, Enoch IVMV. Molecular encapsulation of berberine by a modified β-cyclodextrin and binding of host: guest complex to G-quadruplex DNA. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2019; 38:858-873. [PMID: 31148522 DOI: 10.1080/15257770.2019.1618469] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The capacity to control quadruplex formation, especially in cancer cells, is captivating and entails a reasonable comprehension of the ligand-G-quadruplex binding. Herein, we report an iminopyrenyl-β-cyclodextrin conjugate interacting with duplex and G-quadrulex DNAs. In addition, the host: guest association of the established G-quadruplex binder, berberine, with the β-cyclodextrin derivative is studied employing 2-D ROESY. NMR, UV-visible, and fluorescence spectroscopic techniques are utilized to explore the β-cyclodextrin conjugate's interaction with the quadruplexes. The Binding constants are accounted for the association of the ligands to each of the DNAs viz., calf thymus DNA (duplex), kit22, telo24, and myc22 (quadruplexes). The modulation of the iminopyrenyl-β-cyclodextrin binding to the DNAs are observed when berberine is loaded in the host molecule. A vivid distinction between the interactions of the ligands with duplex and quadruplex structures is inferred. Berberine-loaded iminopyrenyl-β-cyclodextrin shows a higher affinity for binding to kit22.
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Affiliation(s)
- Soundrapandian Suganthi
- Department of Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University) , Coimbatore , Tamil Nadu , India
| | - Ramasamy Sivaraj
- Nanotoxicology Research Lab, Department of Nanoscience, Karunya Institute of Technology and Sciences (Deemed-to-be University) , Coimbatore , Tamil Nadu , India
| | - Israel V M V Enoch
- Department of Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University) , Coimbatore , Tamil Nadu , India.,Nanotoxicology Research Lab, Department of Nanoscience, Karunya Institute of Technology and Sciences (Deemed-to-be University) , Coimbatore , Tamil Nadu , India
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