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Lakshminarayanan S, Jeyasingh V, Murugesan K, Piramuthu L, Selvapalam N, Dass G. A Molecular Shuttlecock: π-Hole-Induced Selective Colorimetric Tripodal Receptor for Cyanide. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822120085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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P. Beletskaya I, D. Averin A, M. Kobelev S, K. Buryak A, I. Vovk A, P. Kukhar V, Denat F, Guilard R. Macrobicyclic and Macrotricyclic Derivatives of N,N’,N’’,N’’’-Tetrasubstituted Cyclen and Cyclam. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)71] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Amatori S, Ambrosi G, Fanelli M, Formica M, Fusi V, Giorgi L, Macedi E, Micheloni M, Paoli P, Pontellini R, Rossi P. Synthesis, basicity, structural characterization, and biochemical properties of two [(3-hydroxy-4-pyron-2-yl)methyl]amine derivatives showing antineoplastic features. J Org Chem 2012; 77:2207-18. [PMID: 22296279 DOI: 10.1021/jo202270j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The N,N'-bis[(3-hydroxy-4-pyron-2-yl)methyl]-N,N'-dimethylethylendiamine (malten) and 4,10-bis[(3-hydroxy-4-pyron-2-yl)methyl]-1,7-dimethyl-1,4,7,10-tetraazacyclododecane (maltonis) were synthesized and characterized. The acid-base behavior, structural characterizations, and biochemical studies in aqueous solution were reported. Each compound contains two 3-hydroxy-2-methyl-4-pyrone units (maltol) symmetrically spaced by a polyamine fragment, the 1,4-dimethylethylendiamine (malten), or the 1,7-dimethyl-1,4,7,10-tetraazacyclododecane (maltonis). They are present at physiological pH 7.4 in the form of differently charged species: neutral but in a zwitterion form for malten and monopositive with an internal separation of charges for maltonis. Malten and maltonis are both able to alter the chromatin structure inducing the covalent binding of genomic DNA with proteins, a feature consistent with the known antiproliferative activity exerted by this class of molecules. Solid-state results and MD simulations in water show that malten, because of its molecular topology, should be more prone than maltonis to act as a donor of H-bonds in intermolecular contacts, thus it should give a better noncovalent approach with the negatively charged DNA. Crystal structures of [H(2)malten](2+) and [H(2)maltonis](2+) cations were also reported.
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Affiliation(s)
- Stefano Amatori
- Molecular Pathology and Oncology Laboratory PaoLa, Department of Biomolecular Sciences, University of Urbino, via Arco d'Augusto 2, I-61032 Fano (PU), Italy
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Dapporto P, Fusi V, Giorgi C, Micheloni M, Palma P, Paoli P, Pontellini R. Conformational Change of an Azamacrocycle Containing Nitrophenol Side Arms by Proton Coordination. Crystal Structures, Heat of reaction and Molecular Mechanics Calculations. Supramol Chem 2006. [DOI: 10.1080/10610279908054508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Vieri Fusi
- b Institute of Chemical Sciences University of Urbino , P. zza Rinascimento 6, 1-61029, Urbino, Italy
| | | | | | - Pierangela Palma
- b Institute of Chemical Sciences University of Urbino , P. zza Rinascimento 6, 1-61029, Urbino, Italy
| | - Paola Paoli
- a Department of Energetics , University of Florence
| | - Roberto Pontellini
- b Institute of Chemical Sciences University of Urbino , P. zza Rinascimento 6, 1-61029, Urbino, Italy
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Lakshminarayanan PS, Kumar DK, Ghosh P. Counteranion-Controlled Water Cluster Recognition in a Protonated Octaamino Cryptand. Inorg Chem 2005; 44:7540-6. [PMID: 16212380 DOI: 10.1021/ic051191f] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Structural aspects of binding of water cluster and halides in the octaamino cryptand L (1,4,11,14,17,24,29,36-octaazapentacyclo[12.12.12.2.(6,9)2.(19,22)2(31,34)]tetratetraconta-6(43),7,9(44),19(41),20,22(42),31(39),32,34(40)-nonaene, N(CH2CH2NHCH2-p-xylyl-CH2NHCH2CH2)3N) in a protonated state were examined. Crystallographic results show binding of the acyclic quasiplanar water tetramer [H4L(H2O)4](I)4.2.57H2O (1) in a tetraprotonated cryptand L having an iodide counteranion, where two water molecules reside inside the two tren-based cavity, bridged by a third water molecule, and a fourth external water molecule is hydrogen bonded to the bridged water molecule. In the case of complexes [H6L(Br)][(Br)6H].4H2O.2HBr (2) and [H6L(Cl)][(Cl)6H].10.86H2O (3), a single bromide and chloride occupied, respectively, the inside of the cryptand cavity, where L is in a hexaprotonated state. Monotopic recognition of bromide/chloride was observed at the center of the cryptand cavity where halides show C-H...halide interactions instead of the N-H...halide interactions reported in the ditopic complexes of halides with the same cryptand, 5 and 6. Thermal analyses on 1-3 were carried out, and the data obtained distinctly differentiate water cluster complex 1 from the anion-encapsulated cryptates 2 and 3. This study represents the first example of anion-controlled cluster formation inside the cavity of a cryptand.
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Affiliation(s)
- P S Lakshminarayanan
- Analytical Science Discipline, Central Salt & Marine Chemicals Research Institute, Bhavnagar 364002, India
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Bilgin A, Ertem B, Gök Y. Synthesis and characterization of new metal-free and metallophthalocyanines containing spherical or cylindrical macrotricyclic moieties. Polyhedron 2005. [DOI: 10.1016/j.poly.2005.01.025] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bilgin A, Ertem B, Gök Y. Synthesis and characterization of novel metal-free phthalocyanines containing four cylindrical or spherical macrotricyclic moieties. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01670-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Farrell D, Gloe K, Gloe K, Goretzki G, McKee V, Nelson J, Nieuwenhuyzen M, Pál I, Stephan H, Town RM, Wichmann K. Towards promising oxoanion extractants: azacages and open-chain counterparts. Dalton Trans 2003. [DOI: 10.1039/b210289g] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bazzicalupi C, Bandyopadhyay P, Bencini A, Bianchi A, Valtancoli B, Bharadwaj D, Bharadwaj P, Butcher R. Complexation Properties of Heteroditopic Cryptands towards Cu2+, Zn2+, Cd2+, and Pb2+ in Aqueous Solution: Crystal Structures of [(H5L1)(ClO4)5]·4 H2O and [(NiL2Cl)Cl]·5.5 H2O·CH3OH. Eur J Inorg Chem 2000. [DOI: 10.1002/1099-0682(200009)2000:9<2111::aid-ejic2111>3.0.co;2-u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Micheloni M, Formica M, Fusi V, Romani P, Pontellini R, Dapporto P, Paoli P, Rossi P, Valtancoli B. Synthesis, Crystal Structures and Lithium Encapsulation by Some Phenolic Aza Cages. Eur J Inorg Chem 2000. [DOI: 10.1002/(sici)1099-0682(200001)2000:1<51::aid-ejic51>3.0.co;2-r] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chand DK, Bharadwaj PK. Heteroditopic Cryptands of Tunable Cavity Size: Imposition of Distorted Geometry onto Copper(II) and Nickel(II) and Molecular Recognition of Water Molecules. Inorg Chem 1998. [DOI: 10.1021/ic9801746] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dillip K. Chand
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Parimal K. Bharadwaj
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Synthesis and uses of macrobicyclic cryptands: From complexation of transition metal ions to molecular devices. J CHEM SCI 1996. [DOI: 10.1007/bf02870028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chand DK, Ragunathan KG, Mak TCW, Bharadwaj PK. Tetrahedral Recognition of a Water Molecule by Heteroditopic Cryptands: X-ray Structural Studies. J Org Chem 1996. [DOI: 10.1021/jo951071x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dillip K. Chand
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Kaliappa G. Ragunathan
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Thomas C. W. Mak
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Parimal K. Bharadwaj
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
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