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Valinate and SiMe2 – An interesting couple in pentacoordinate Si-complexes: Templated generation of the dipeptide val-val and formation of an organosilicon-ammonia-adduct. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rashid F, Uddin N, Ali S, Haider A, Tirmizi SA, Diaconescu PL, Iqbal J. New triorganotin(iv) compounds with aromatic carboxylate ligands: synthesis and evaluation of the pro-apoptotic mechanism. RSC Adv 2021; 11:4499-4514. [PMID: 35424423 PMCID: PMC8694426 DOI: 10.1039/d0ra06695h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/19/2020] [Indexed: 01/04/2023] Open
Abstract
Three new organotin(iv) carboxylate compounds were synthesized and structurally characterized by elemental analysis and FT-IR and multinuclear NMR (1H, 13C, 119Sn) spectroscopy. Single X-ray crystallography reveals that compound C2 has a monoclinic crystal system with space group P21/c having distorted bipyramidal geometry defined by C3SnO2. The synthesized compounds were screened for drug-DNA interactions via UV-Vis spectroscopy and cyclic voltammetry showing good activity with high binding constants. Theoretical investigations also support the reactivity of the compounds as depicted from natural bond orbital (NBO) analysis using Gaussian 09. Synthesized compounds were initially evaluated on two cancer (HeLa and MCF-7) cell lines and cytotoxicity to normal cells was evaluated using a non-cancerous (BHK-21) cell line. All the compounds were found to be active, with IC50 values less than that of the standard drug i.e. cisplatin. The cytotoxic effect of the most potent compound C2 was confirmed by LDH cytotoxicity assay and fluorescence imaging after PI staining. Apoptotic features in compound C2 treated cancer cells were visualized after DAPI staining while regulation of apoptosis was observed by reactive oxygen species generation, binding of C2 with DNA, a change in mitochondrial membrane potential and expression of activated caspase-9 and caspase-3 in cancer cells. Results are indicative of activation of the intrinsic pathway of apoptosis in C2 treated cancer cells.
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Affiliation(s)
- Faisal Rashid
- Centre for Advanced Drug Research COMSATS University Islamabad, Abbottabad Campus Abbottabad-22060 Pakistan
| | - Noor Uddin
- Department of Chemistry, Quaid-i-Azam University 45320-Islamabad Pakistan
| | - Saqib Ali
- Department of Chemistry, Quaid-i-Azam University 45320-Islamabad Pakistan
| | - Ali Haider
- Department of Chemistry, Quaid-i-Azam University 45320-Islamabad Pakistan
| | - Syed Ahmad Tirmizi
- Department of Chemistry, Quaid-i-Azam University 45320-Islamabad Pakistan
| | - Paula L Diaconescu
- Department of Chemistry and Biochemistry, University of California Los Angeles607 Charles E. Young Drive East Los Angeles CA 90095 USA
| | - Jamshed Iqbal
- Centre for Advanced Drug Research COMSATS University Islamabad, Abbottabad Campus Abbottabad-22060 Pakistan
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Sirajuddin M, Ali S, McKee V, Sohail M, Pasha H. Potentially bioactive organotin(IV) compounds: synthesis, characterization, in vitro bioactivities and interaction with SS-DNA. Eur J Med Chem 2014; 84:343-63. [PMID: 25036793 DOI: 10.1016/j.ejmech.2014.07.028] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 07/01/2014] [Accepted: 07/08/2014] [Indexed: 01/27/2023]
Abstract
Fourteen new organotin(IV) complexes with general formula R2SnL2 or R3SnL where R = CH3, C2H5, C4H9, C6H5, C6H11, CH2-C6H5, C(CH3)3, C8H17 and L = N-[(2-methoxyphenyl)]-4-oxo-4-[oxy]butanamide were synthesized and characterized by elemental analyses, FT-IR, NMR ((1)H, (13)C and (119)Sn), mass spectrometry and single crystal X-ray structural analysis. Crystallographic data for four triorganotin(IV) complexes (R3SnL, R = CH3, C2H5, C4H9, CH2-C6H5) showed the tin has approximate trigonal bipyramidal geometry with the R groups in the trigonal plane. The carboxylate groups of ligands L bridge adjacent tin atoms, resulting in polymeric chains. In case of the diorganotin(IV) derivatives a six-coordinate geometry at the tin atom is proposed from spectroscopic evidence. The Me-Sn-Me bond angle in complex 7 was determined from the (2)J[(119)Sn-(1)H] value as 166.3° that falls in the range of six-coordinate geometry. The ligand and its complexes (1-14) were screened for their antimicrobial, antitumor, cytotoxic and antileishmanial activities and found to be biologically active. The ligand and its complexes bind to DNA via intercalative interactions resulting in hypochromism and minor bathochromic shifts as confirmed by UV-visible spectroscopy. Based on in vitro studies such as the potato disc method, the synthesized compounds were found to possess significant antitumor activity. Also, from cytotoxicity and DNA interaction studies, these compounds can also be used for the prevention and treatment of cancer. Gel electrophoresis assay was used to investigate the damage to double stranded super coiled plasmid pBR322 DNA by the synthesized compounds and compounds 1 and 7 were found to cause the maximum damage. All the synthesized compounds exhibit strong antileishmanial activity that was even higher than that of Amphotericin B, with significant cytotoxicity. This study, therefore, demonstrated the potential use of these compounds as source of novel agents for the treatment of leishmaniasis.
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Affiliation(s)
- Muhammad Sirajuddin
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Saqib Ali
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Vickie McKee
- Department of Chemistry, Loughborough University, Loughborough, Leics LE11 3TU, UK
| | - Manzar Sohail
- Center of Excellence for Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Hammad Pasha
- Department of Biochemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
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Rehman W, Baloch MK, Badshah A, Ali S. Synthesis and Characterization of Biologically Potent Di-organotin(IV) Complexes of Mono-Methyl Glutarate. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200500034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wojciechowska A, Gągor A, Duczmal M, Staszak Z, Ozarowski A. l-Tyrosinatonickel(II) Complex: Synthesis and Structural, Spectroscopic, Magnetic, and Biological Properties of 2{[Ni(l-Tyr)2(bpy)]}·3H2O·CH3OH. Inorg Chem 2013; 52:4360-71. [DOI: 10.1021/ic3024919] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Anna Gągor
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422
Wrocław, Poland
| | | | | | - Andrzej Ozarowski
- National
High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United
States
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Nath M, Singh H, Kumar P, Kumar A, Song X, Eng G. Organotin(IV) tryptophanylglycinates: potential non-steroidal antiinflammatory agents; crystal structure of dibutyltin(IV) tryptophanylglycinate. Appl Organomet Chem 2009. [DOI: 10.1002/aoc.1514] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Nath M, Singh H, Eng G, Song X. New diorganotin(IV) derivatives of dipeptides: synthesis and characteristic spectral studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:529-536. [PMID: 18289925 DOI: 10.1016/j.saa.2008.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Accepted: 01/04/2008] [Indexed: 05/25/2023]
Abstract
Some new diorganotin(IV) derivatives of the formulae, R2SnL, where R=Me, n-Bu, Ph, and n-Oct, and L is the dianion of histidinylalanine (H2L-1) and histidinylleucine (H2L-2) have been synthesized by the reaction of R2SnCl2 and the preformed sodium salt of the respective dipeptides. The bonding and coordination behaviour in these derivatives are discussed on the basis of FT-IR, multinuclear 1H, 13C and 119Sn NMR and 119Sn Mössbauer spectroscopic studies. These investigations suggest that dipeptides in R2SnL act as dianionic tridentate coordinating through the COO(-), NH2 and N(-)peptide groups. The 119Sn Mössbauer studies, together with the NMR data, suggest a trigonal bipyramidal geometry around tin in R2SnL with the alkyl/aryl groups and Npeptide in the equatorial positions, while a carboxylic oxygen and the amino nitrogen atom occupy the axial positions.
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Affiliation(s)
- Mala Nath
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247667, India.
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Nath M, Singh H, Eng G, Song X. New di- and triorganotin(IV) derivatives of tyrosinylphenylalanine as models for metal–protein interactions: Synthesis and structural characterization. Crystal structure of Me2Sn(Tyr-Phe)·MeOH. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.04.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Katsoulakou E, Tiliakos M, Papaefstathiou G, Terzis A, Raptopoulou C, Geromichalos G, Papazisis K, Papi R, Pantazaki A, Kyriakidis D, Cordopatis P, Manessi-Zoupa E. Diorganotin(IV) complexes of dipeptides containing the alpha-aminoisobutyryl residue (Aib): preparation, structural characterization, antibacterial and antiproliferative activities of [(n-Bu)2 Sn(H(-1)L)] (LH=H-Aib-L-Leu-OH, H-Aib-L-Ala-OH). J Inorg Biochem 2008; 102:1397-405. [PMID: 18289688 DOI: 10.1016/j.jinorgbio.2008.01.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Revised: 12/28/2007] [Accepted: 01/02/2008] [Indexed: 10/22/2022]
Abstract
Two new organotin(IV) complexes with dianionic dipeptides containing the alpha-aminoisobutyryl residue (Aib) as ligands are described. The solid complexes [(n-Bu)(2)Sn(H(-1)L(A))] x 2MeOH (1 x 2MeOH) (L(A)H=H-Aib-L-Leu-OH) and [(n-Bu)(2)Sn(H(-1)L(B))] x MeOH (2 x MeOH) (L(B)H=H-Aib-L-Ala-OH) have been isolated and characterized by single-crystal X-ray crystallography and spectroscopic techniques (H(-1)L(2-) is the dianionic form of the corresponding dipeptide). Complexes 1 x 2MeOH and 2 x MeOH are monomeric with similar molecular structures. The doubly deprotonated dipeptide behaves as a N(amino), N(peptide), O(carboxylate) ligand and binds to the Sn(IV) atom. The five-coordinate metal ion has a distorted trigonal bipyramidal geometry. A different network of intermolecular hydrogen bonds in each compound results in very dissimilar supramolecular features. The IR, far-IR, Raman and (119)Sn NMR data are discussed in terms of the nature of bonding and known structures. The antibacterial and antiproliferative activities as well as the effect of the new compounds on pDNA were examined. Complexes 1 and 2 are active against the gram-positive bacteria Bacillus subtilis and Bacillus cereus. The IC(50) values reveal that the two compounds express promising cytotoxic activity in vitro against a series of cell lines.
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Synthesis and in vitro Fungicidal Study of Organotin(IV) Complexes of Monomethyl Glutarate. RUSS J COORD CHEM+ 2005. [DOI: 10.1007/s11173-005-0181-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Barone G, Silvestri A, Ruisi G, La Manna G. DFT Calculations of the Electric Field Gradient at the Tin Nucleus as a Support of Structural Interpretation by119Sn Mössbauer Spectroscopy. Chemistry 2005; 11:6185-91. [PMID: 16052634 DOI: 10.1002/chem.200401156] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
DFT calculations, using an all-electron basis set and with full geometry optimization, were performed on 34 Sn(II) and Sn(IV) compounds of known structure and (119)Sn Mössbauer parameters, to obtain the theoretical values of the electric field gradient components, V(xx), V(yy), and V(zz), at the tin nucleus. These were used to determine the quantity V = V(zz)[1+ 1/3((V(xx) - V(yy))/((V(zz))(2)](1/2), for each investigated compound, which is related to the quadrupole splitting (DeltaE) parameter according to DeltaE = 1/2eQV, where e is the electronic charge and Q is the quadrupole moment of the tin nucleus. The linear fitting of the correlation plot of the experimental DeltaE, versus the corresponding calculated V values, produced a slope that is equal to 0.93 +/- 0.03 and a correlation coefficient R = 0.982. The value of Q obtained, 15.2 +/- 4.4 fm(2), is in agreement with that previously experimentally determined or calculated by analogous procedures. The calculation method is able to establish the sign of the electric field gradient component V(zz), in agreement with the sign of DeltaE determined experimentally by Mössbauer-Zeeman spectroscopy. The calculated structural parameters are in good agreement with the corresponding experimental data, determined by X-ray crystallography in the solid state, with average structural deviations of about 3 % for bond lengths and angles in the tin environment. Calculated values of DeltaE were obtained from the calibration fitting constant and from the values of V. By comparing experimental and calculated DeltaE parameters, the structure assignment of configurational isomers was successful in two test cases, in agreement with the experimental X-ray crystallographic structures. These results indicate that the method can be used as a tool to support the routine structure interpretation of tin compounds by (119)Sn Mössbauer spectroscopy.
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Affiliation(s)
- Giampaolo Barone
- Dipartimento di Chimica Inorganica e Analitica Stanislao Cannizzaro, Università di Palermo, Parco d'Orleans II, Italy.
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Nath M, Jairath R, Eng G, Song X, Kumar A. New organotin(IV) ascorbates: synthesis, spectral characterization, biological and potentiometric studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 61:77-86. [PMID: 15556424 DOI: 10.1016/j.saa.2004.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2004] [Accepted: 03/22/2004] [Indexed: 05/24/2023]
Abstract
New organotin(IV) ascorbates of the general formulae R(3)Sn(HAsc) (where R = Me , n-Pr, n-Bu and Ph) and R(2)Sn(Asc) (where R = n-Bu and Ph) have been synthesized by the reaction of R(n)SnCl(4-n) (where n = 2 or 3) with monosodium-l-ascorbate. The bonding and coordination behaviour in these complexes are discussed on the basis of UV-Vis, IR, Far-IR, (1)H and (13)C NMR, and (119)Sn Mossbauer spectroscopic studies. L-Ascorbic acid acts as a monoanionic bidentate ligand in R(3)Sn(HAsc) coordinating through O(1) and O(3). The Mossbauer studies together with IR and NMR studies suggest that for these polymeric derivatives, the polyhedron is trigonal bipyramidal around tin with three organic groups in the equatorial positions. In R(2)Sn(Asc), L-ascorbic acid acts as dianionic tetradentate ligand and a polymeric structure with octahedral geometry around tin with trans organic groups has been tentatively proposed. The complexes have been assayed for their anti-inflammatory and cardiovascular activity. Ph(2)Sn(Asc) has been found to show the highest activity among the studied complexes. It is suggested on the basis of potentiometric studies of Me(2)Sn(IV) and Me(3)Sn(IV) systems with L-ascorbic acid that under physiological conditions (pH = 7.0) Me(2)Sn(HAsc)(OH) (approximately 60%), Me(2)Sn(OH)(2) (approximately 40%) and Me(3)Sn(HAsc) (approximately 60%), Me(3)Sn(OH) (approximately 40%), respectively, are existing, which may be responsible for their biological activities.
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Affiliation(s)
- Mala Nath
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667, India.
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Nath M, Pokharia S, Eng G, Song X, Kumar A. Comparative study of structure–activity relationship of di- and tri-organotin(IV) derivatives of amino acid and peptides. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(02)02225-8] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nath M, Pokharia S, Song X, Eng G, Gielen M, Kemmer M, Biesemans M, Willem R, de Vos D. New organotin(IV) derivatives of dipeptides as models for metal-protein interactions:in vitro anti-tumour activity. Appl Organomet Chem 2003. [DOI: 10.1002/aoc.451] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nath M, Yadav R, Eng G, Musingarimi P. Characteristic spectral studies andin vitro Antimicrobial andin vivo multi-infection antifungal activities in mice of new organotin(IV) derivatives of heterocyclic amino acids. Appl Organomet Chem 1999. [DOI: 10.1002/(sici)1099-0739(199901)13:1<29::aid-aoc809>3.0.co;2-d] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Huber F, Schmiedgen R, Sch�rmann M, Barbieri R, Ruisi G, Silvestri A. Mono-organotin(IV) and tin(IV) derivatives of 2-mercaptopyridine and 2-mercaptopyrimidine: X-ray structures of methyl-tris(2-pyridinethiolato)tin(IV) and phenyl-tris(2-pyridinethiolato)tin(IV)�1.5CHCl3. Appl Organomet Chem 1997. [DOI: 10.1002/(sici)1099-0739(199710/11)11:10/11<869::aid-aoc655>3.0.co;2-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Girasolo MA, Guli G, Pellerito L, Stocco GC. Complexes of tryptophan dipeptides with the R2Sn(IV)2+ ion (R=Me, Ph): Spectroscopic studies, solution properties and structural implications. Appl Organomet Chem 1995. [DOI: 10.1002/aoc.590090307] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pellerito L, Maggio F, Consiglio M, Pellerito A, Stocco GC, Grimaudo S. Organometallic complexes with biological molecules, IV. Di- and tri-organotin(IV) amoxicillin derivatives: Solid-state and solution-phase spectroscopic investigations. Appl Organomet Chem 1995. [DOI: 10.1002/aoc.590090306] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Schmiedgen R, Huber F, Preut H, Ruisi G, Barbieri R. Synthesis and characterization of diorganotin(IV) derivatives of 2-mercaptopyridine and crystal structure of diphenyl pyridine-2-thiolatochlorotin(IV). Appl Organomet Chem 1994. [DOI: 10.1002/aoc.590080414] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Buzás N, Gyurcsik B, Nagy L, Zhang YX, Korecz L, Burger K. Equilibrium and spectroscopic studies of diethyltin(IV) complexes formed with carbohydrate derivatives of thiazolidine-4-carboxylic acid. Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(93)03787-b] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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La Manna G, Ruisi G, Barbieri R, Huber F. Semi-empirical MNDO study of the structure of some diorganotin (IV) glycylglycinates. Appl Organomet Chem 1993. [DOI: 10.1002/aoc.590070708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Guli G, Gennaro G, Pellerito L, Stocco GC. Diorganotin(IV) dipeptide complexes with potential antitumour activity. Appl Organomet Chem 1993. [DOI: 10.1002/aoc.590070608] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Huber F, Vornefeld M, Preut H, von Angerer E, Ruisi G. Synthesis and spectroscopic characterization of dicyclohexyltin derivatives of dipeptides, andin vitro effects against MDA-MB 231 breast cancer cells: Crystal structures of dicyclohexyltin glycylglycinate and glycylalaninate. Appl Organomet Chem 1992. [DOI: 10.1002/aoc.590060706] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Musmeci MT, Madonia G, Giudice MTL, Silvestri A, Ruisi G, Barbieri R. Interactions of organotins with biological systems. Appl Organomet Chem 1992. [DOI: 10.1002/aoc.590060205] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mundus-Glowacki B, Huber F, Preut H, Ruisi G, Barbieri R. Synthesis and spectroscopic characterization of dimethyl-, di-n-butyl-, di-t-butyl-and diphenyl-tin(iv) derivatives of dipeptides: Crystal and molecular structure of di-n-butyltin(iv) glycylvalinate. Appl Organomet Chem 1992. [DOI: 10.1002/aoc.590060111] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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