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Siwek A, Staczek P, Strzelczyk A, Stefanska J. Search for Molecular Basis of Antifungal Activity of Thiosemicarbazide Derivatives: A Combined in vitro Antifungal and Enzymatic Studies with in Silico Docking. LETT DRUG DES DISCOV 2012. [DOI: 10.2174/1570180811309010002] [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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127
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Kusmierz E, Siwek A, Kosikowska U, Malm A, Wujec M. Antibacterial Characterization of 1-benzoyl-4-arylthiosemicarbazides and the study of their structure-activity relationship. LETT DRUG DES DISCOV 2012. [DOI: 10.2174/157018012803307914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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128
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Handzlik J, Szymańska E, Wójcik R, Dela A, Jastrzębska-Więsek M, Karolak-Wojciechowska J, Fruziński A, Siwek A, Filipek B, Kieć-Kononowicz K. Synthesis and SAR-study for novel arylpiperazine derivatives of 5-arylidenehydantoin with α1-adrenoceptor antagonistic properties. Bioorg Med Chem 2012; 20:4245-57. [DOI: 10.1016/j.bmc.2012.05.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Revised: 05/21/2012] [Accepted: 05/25/2012] [Indexed: 11/25/2022]
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129
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Siwek A, Stączek P, Kosikowska U, Malm A, Paneth P, Jankowski S. Does dehydrocyclization of 4-benzoylthiosemicarbazides in acetic acid lead to s-triazoles or thiadiazoles? Struct Chem 2012. [DOI: 10.1007/s11224-012-0065-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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130
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Siwek A, Stefańska J. Antimicrobial activity and SAR study of some novel thiosemicarbazide derivatives bearing piperidine moiety. Med Chem 2012; 7:690-6. [PMID: 22313308 DOI: 10.2174/157340611797928406] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/12/2011] [Accepted: 06/26/2011] [Indexed: 11/22/2022]
Abstract
In this study novel thiosemicarbazides bearing piperidine moiety were synthesized in order to investigate their possible antibacterial and antifungal activities. A structure-activity relationship (SAR) study including conformational analysis and some physicochemical descriptors was carried out to provide the guidance for further synthetic work. The significant molecular descriptors related to the compounds with antifungal activity were: electrostatic potential surface, the highest occupied molecular orbital energy, surface area, volume, and hydration energy.
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131
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Siwek A, Stefańska J, Dzitko K, Ruszczak A. Antifungal effect of 4-arylthiosemicarbazides against Candida species. Search for molecular basis of antifungal activity of thiosemicarbazide derivatives. J Mol Model 2012; 18:4159-70. [PMID: 22535361 PMCID: PMC3429777 DOI: 10.1007/s00894-012-1420-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 03/27/2012] [Indexed: 11/24/2022]
Abstract
The in vitro antifungal potency of six series of 4-arylthiosemicarbazides was evaluated. Two isoquinoline derivatives with an ortho-methoxy or ortho-methyl group at the phenyl ring were the most potent antifungal agents. Molecular modeling studies and docking of all 4-arylthiosemicarbazides into the active sites of sterol 14α-demethylase (CYP51), topoisomerase II (topo II), l-glutamine: d-fructose-6-phosphate amidotransferase (GlcN-6-P), secreted aspartic proteinase (SAP), N-myristoyltransferase (NMT), and UDP-N-acetylmuramoyl-l-alanine:d-glutamate ligase (MurD) indicated the importance of both structural and electronic factors in ligand recognition and thus for the antifungal effectiveness of 4-arylthiosemicarbazides. A possible antifungal target was identified (NMT) and isoquinoline-thiosemicarbazides showed more favorable affinity than the native ligand. Electrostatic potential surface of isoquiniline derivative compound 6o with antifungal activity ![]()
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132
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Pomierny-Chamioło L, Frankowska M, Siwek A, Rup K, Filip M. Cocaine-induced adaptive changes in metabotropic glutamate receptors mGlu5 in brain structures of rats underwent cocaine self-administration, extinction training and drug-induced relapse. Pharmacol Rep 2012. [DOI: 10.1016/s1734-1140(12)70809-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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133
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Pomierny-Chamioło L, Siwek A, Pilc A, Nowak G. Chronic MTEP treatment, like antidepressants, induces adaptive changes in mGlu5 receptors in the rat brain. Pharmacol Rep 2012. [DOI: 10.1016/s1734-1140(12)70824-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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134
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Wawrzycka-Gorczyca I, Siwek A. X-ray crystal structure of new monohydrate of 2-thioxoimidazolidin-4-one derivative and structural comparison with its analogs; visualizing intermolecular interactions with Hirshfeld surface analysis. Struct Chem 2012. [DOI: 10.1007/s11224-012-9964-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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135
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Zagórska A, Czopek A, Pawłowski M, Dybała M, Siwek A, Nowak G. Serotonin transporter activity of imidazolidine-2,4-dione and imidazo[2,1-f]purine-2,4-dione derivatives in aspect of their acid-base properties. Med Chem Res 2011; 21:3455-3459. [PMID: 23049232 PMCID: PMC3462310 DOI: 10.1007/s00044-011-9883-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 11/04/2011] [Indexed: 01/19/2023]
Abstract
Affinities of arylpiperazinylalkyl derivatives of imidazo[2,1-f]purine-2,4-dione and imidazolidine-2,4-dione for serotonin transporter and their acid-base properties were evaluated. The dissociation constant (pK(a)) of compounds 1-22 were determinated by potentiometric titration and calculated using pKalc 3.1 module of the Pallas system. The data from experimental methods and computational calculations were compared and suitable conclusions were reached.
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136
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Trotsko N, Król J, Siwek A, Wujec M, Kosikowska U, Malm A. Synthesis and antimicrobial evaluation of new 1-{[4-(4-Halogenophenyl)-4H-1,2,4- triazol-3-yl]sulfanyl}acetyl-4-substituted thiosemicarbazides and products of their cyclization. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20758] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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137
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Marona H, Kubacka M, Filipek B, Siwek A, Dybała M, Szneler E, Pociecha T, Gunia A, Waszkielewicz AM. Synthesis, alpha-adrenoceptors affinity and alpha 1-adrenoceptor antagonistic properties of some 1,4-substituted piperazine derivatives. DIE PHARMAZIE 2011; 66:733-739. [PMID: 22026152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A series of different 1,4-substituted piperazine derivatives (1-11) was synthesized. It comprised 1-(substituted-phenoxyalkyl)-4-(2-methoxyphenyl)piperazine derivatives (1-5); 1,4-bis(substituted-phenoxyethyl)piperazine derivatives (6-8) and 1-(substituted-phenoxy)-3-(substituted-phenoxyalkylpiperazin-1-yl)propan-2-ol derivatives (9-11). All compounds were evaluated for affinity toward alpha 1- and alpha 2-receptors by radioligand binding assays on rat cerebral cortex using [3H]prazosin and [3H]clonidine as specific radioligand, respectively. Furthermore alpha 1-antagonistic properties were checked for most promising compounds (1-5 and 10) by means of inhibition of phenylephrine induced contraction in isolated rat aorta. Antagonistic potency stayed in agreement with radioligand binding results. The most active compounds (1-5) displaced [3H]prazosin from cortical binding sites in low nanomolar range (Ki = 2.1-13.1 nM). Compound 10 showed slightly lower affinity for alpha 1-adrenoceptor (Ki = 781 nM). Compounds 2-5 displayed the strongest antagonistic activity with pA2 values ranging from 8.441 to 8.807. Compound 1 gave a pA2 value of 7.868, while compound 10 showed the weakest antagonistic potency, giving a pA2 value of 6.374. 1-[3-(2-Chloro-6-methylphenoxy)propyl]-4-(2-methoxyphenyl)piperazine hydrochloride (5) showed the best alpha 1- affinity properties with a Ki(alpha 1) value of 2.1 nM and it was 61.05 fold more selective toward alpha 1 than alpha 2-receptors. The best properties showed 1-[3-(2,6-dimethylphenoxy)propyl]-4-(2-methoxyphenyl)piperazine hydrochloride (4) with a Ki(alpha 1) value of 2.4 nM, a 142.13 fold better selectivity to alpha 1 - over alpha 2-adrenoceptors and the best antagonistic potency (pA2 = 8.807). It is worth to emphasized that all most promising compounds possessed an 1-(o-methoxyphenyl)piperazine moiety which probably plays an important role in the affinity to alpha-adrenoceptors.
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MESH Headings
- Adrenergic alpha-1 Receptor Antagonists/pharmacology
- Adrenergic alpha-Antagonists/metabolism
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/metabolism
- Biological Assay
- Cerebral Cortex/drug effects
- Cerebral Cortex/metabolism
- Dose-Response Relationship, Drug
- In Vitro Techniques
- Indicators and Reagents
- Male
- Piperazines/metabolism
- Piperazines/pharmacology
- Radioligand Assay
- Rats
- Rats, Wistar
- Receptors, Adrenergic, alpha/metabolism
- Receptors, Adrenergic, alpha-1/metabolism
- Receptors, Adrenergic, alpha-2/metabolism
- Structure-Activity Relationship
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138
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Wawrzycka-Gorczyca I, Siwek A. Synthesis, X-ray crystal structure and theoretical study of 4-ethyl-5-(2-thienyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione; structural comparison with its aromatic analogs. ACTA ACUST UNITED AC 2011. [DOI: 10.1524/zkri.2011.1444] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
The crystal structure of 4-ethyl-5-(2-thienyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (1) was determinäed. The compound crystallizes in the monoclinic space group P21/n (Z = 4) with a = 8.679(2), b = 7.873(2), c = 14.657(3) Å, β = 105.56(3)° and V = 964.8(4) Å3. Its molecular and crystal structure was compared with three aromatic analogs. In three crystal structures of 2,4-dihydro-3H-1,2,4-triazole-3-thione derivatives, Ntriazole—H · · · S(=C) dimer as the main structural motif is formed, while in one Ntriazole—H · · · S hydrogen bonds connect molecules to make helix arrangement. Moreover, in 1, Cethyl—H · · · S(=C), Sthione · · · Sthiophene and πthiophene · · · πtriazole interactions are observed; there are not N—H · · · N hydrogen bonds.
NMR in DMSO and IR experiments confirmed the compound to exist as the thione tautomer.
We carried out extensive conformational searches for 1 at the molecular mechanics level in order to compare structures obtained from different force fields with the experimental results.
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139
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Wujec M, Plech T, Siwek A, Rajtar B, Polz-Dacewiczb M. Synthesis and in vitro study of antiviral and virucidal activity of novel 2-[(4-methyl-4H-1,2,4-triazol-3-yl)sulfanyl]acetamide derivatives. Z NATURFORSCH C 2011; 66:333-9. [PMID: 21950156 DOI: 10.1515/znc-2011-7-803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
2-[(4-Methyl-4H-1,2,4-triazol-3-yl)sulfanyl]acetamide derivatives were synthesized and their structures were confirmed by 1H NMR, IR, and elemental analysis. Cytotoxicity of the compounds towards HEK-293 and GMK cells was evaluated. Moreover, the antiviral and virucidal activities of these compounds against human adenovirus type 5 and ECHO-9 virus were assessed. Some of the newly synthesized derivatives have the potential to reduce the viral replication of both tested viruses.
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140
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Siwek A, Stączek P, Stefańska J. Synthesis and structure-activity relationship studies of 4-arylthiosemicarbazides as topoisomerase IV inhibitors with Gram-positive antibacterial activity. Search for molecular basis of antibacterial activity of thiosemicarbazides. Eur J Med Chem 2011; 46:5717-26. [PMID: 21978836 DOI: 10.1016/j.ejmech.2011.09.034] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 09/16/2011] [Accepted: 09/20/2011] [Indexed: 11/25/2022]
Abstract
1-(indol-2-carbonyl)-4-(4-nitrophenyl)-thiosemicarbazide was synthesized and antibacterial and type IIA topoisomerases (DNA gyrase and topoisomerase IV) activity was evaluated. It was found that it shows activity against Gram-positive bacteria with MICs of 50 μg/mL and inhibitory action against topoisomerase IV with an IC(50) of 14 μM. Although modification of its structure resulted in molecules with a lower biological profile, our observations strongly implicate that thiosemicarbazide derivatives participate in at least two different mechanisms of antibacterial activity; one is connected with the inhibition of topoisomerase IV, while the nature of the other cannot be elucidated from the limited data collected thus far. The differences in bioactivity further investigated by the molecular modeling approach and docking studies suggest that inhibitory activity of 4-arylthiosemicarbazides is connected with electronic structure rather than the geometry of the molecule.
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141
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Wawrzycka-Gorczyca I, Siwek A. Crystal structures of hydrazinecarbothioamide derivatives. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311084492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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142
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Siwek A, Trotsko N, Wujec M, Kamiński R, Paneth P. Synthetic route to isotopically labelled-oxamate. J Labelled Comp Radiopharm 2011. [DOI: 10.1002/jlcr.1876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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143
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Wujec M, Plech T, Siwek A, Rajtar B, Polz-Dacewicz M. Synthesis and in vitro Study of Antiviral and Virucidal Activity of Novel 2-[(4-Methyl-4H-1,2,4-triazol-3-yl)sulfanyl]acetamide Derivatives. Z NATURFORSCH C 2011. [DOI: 10.5560/znc.2011.66c0333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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144
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Plech T, Wujec M, Siwek A, Kosikowska U, Malm A. Synthesis and antimicrobial activity of thiosemicarbazides, s-triazoles and their Mannich bases bearing 3-chlorophenyl moiety. Eur J Med Chem 2010; 46:241-8. [PMID: 21130541 DOI: 10.1016/j.ejmech.2010.11.010] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 11/05/2010] [Accepted: 11/05/2010] [Indexed: 11/18/2022]
Abstract
A fast and efficient synthesis of some 1,4-disubstituted thiosemicarbazide derivatives is described. The reaction of 3-chlorobenzoic acid hydrazide with various aryl isothiocyanates gave thiosemicarbazide derivatives (1-11) in good yield. The cyclization of compounds (1-11) in the presence of 2% NaOH resulted in the formation of compounds (12-22) containing the 1,2,4-triazole ring. A series of new Mannich bases (23-33) related to the structure of 1,2,4-triazole has been also synthesized. All of these compounds were tested for their in vitro antibacterial activity against the reference strains of aerobic bacteria - 6 Gram-positive and 3 Gram-negative ones; 12 Staphylococcus aureus clinical isolates were also examined. An attempt was made to clarify the influence of the nature/position of substituents on antibacterial activity of compounds described.
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145
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Wujec M, Siwek A, Kusmierz E, Stefanska J. Synthesis and In Vitro Antimicrobial Evaluation of 4-alkyl/aryl-1-(3-phenoxypropionyl)-thiosemicarbazides. LETT DRUG DES DISCOV 2010. [DOI: 10.2174/1570180811007010737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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146
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Siwek A, Wujec M, Dobosz M, Wawrzycka-Gorczyca I. Study of direction of cyclization of 1-azolil-4-aryl/alkyl-thiosemicarbazides. HETEROATOM CHEMISTRY 2010. [DOI: 10.1002/hc.20643] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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147
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Cegielska-Perun K, Bujalska-Zadrożny M, Dybała M, Siwek A, Wrzesień R, Makulska-Nowak HE. Modification of morphine analgesia by antidepressants in diabetic neuropathic pain model. Pharmacol Rep 2010. [DOI: 10.1016/s1734-1140(10)71186-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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148
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Jastrzębska-Więsek M, Siwek A, Partyka A, Mierzejewski P, Bieńkowski P, Kołaczkowski M, Wesołowska A. Potential antidepressant-like effect of the potent serotonin 5-HT6 receptor agonist EMD 386088 in the forced swim test in rats. Pharmacol Rep 2010. [DOI: 10.1016/s1734-1140(10)71141-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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149
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Pomierny-Chamioto L, Siwek A, Piotrowska A, Nowak G. Involvement of the serotonergic and glutamatergic systems in the antidepressant-like activity of MTEP, in the forced swim test in mice. Pharmacol Rep 2010. [DOI: 10.1016/s1734-1140(10)71162-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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150
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Wierońska JM, Brański P, Siwek A, Dybala M, Nowak G, Pilc A. GABAergic dysfunction in mGlu7 receptor-deficient mice as reflected by decreased levels of glutamic acid decarboxylase 65 and 67kDa and increased reelin proteins in the hippocampus. Brain Res 2010; 1334:12-24. [DOI: 10.1016/j.brainres.2010.03.078] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2009] [Revised: 03/18/2010] [Accepted: 03/23/2010] [Indexed: 01/26/2023]
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