1
|
Synthetic and DFT Modeling Studies on Suzuki–Miyaura Reactions of 4,5-Dibromo-2-methylpyridazin-3(2H)-one with Ferrocene Boronates, Accompanied by Hydrodebromination and a Novel Bridge-Forming Annulation In Vitro Cytotoxic Activity of the Ferrocenyl–Pyridazinone Products. Catalysts 2022. [DOI: 10.3390/catal12060578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
This paper presented the efficiency of different Pd-based catalytic systems in a series of SM reactions of 4,5-dibromo-2-methylpyridazin-3(2H)-one with ferroceneboronic acid, ferrocene-1,1′-diboronoc acid, and its bis-pinacol ester. In addition to the disubstituted product, these transformations afford substantial amounts of isomeric 4- and 5-ferrocenyl-2-methylpyridazin-3(2H)-ones, and a unique asymmetric bi-pyridazinone-bridged ferrocenophane with a screwed molecular architecture. The reactions of phenylboronic acid, conducted under the conditions, are proven to be the most reductive in the conversions of ferroceneboronic acid, and produce 2-methyl-4,5-diphenylpyridazin-3(2H)-one as single product, supporting our view about solvent-mediated hydrodehalogenations that are supposed to proceed via the assistance of the ferrocenyl group present in the reaction mixture, or attached to the bromo-pyridazinone scaffold, which is constructed in the first SM coupling of the heterocyclic precursor. A comparative DFT modelling study on the structures and possible transformations of relevant bromo-, ferrocene- and phenyl-containing carbopalladated intermediate pairs was carried out, providing reasonable mechanisms suitable to account for the apparently surprising regioselectivity of the alternative hydrodebromination processes, and for the formation of the ferrocenophane product. Supporting the results of DFT modelling studies, the implication of DMF as a hydrogen transfer agent in the hydrodebromination reactions is evidenced by deuterium labelling experiments using the solvent mixtures DMF-d7–H2O (4:1) and DMF–D2O (4:1). The organometallic products display antiproliferative effects on human malignant cell lines.
Collapse
|
2
|
Synthesis of C3-Symmetric Cinchona-Based Organocatalysts and Their Applications in Asymmetric Michael and Friedel–Crafts Reactions. Symmetry (Basel) 2021. [DOI: 10.3390/sym13030521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this work, anchoring of cinchona derivatives to trifunctional cores (hub approach) was demonstrated to obtain size-enlarged organocatalysts. By modifying the cinchona skeleton in different positions, we prepared four C3-symmetric size-enlarged cinchona derivatives (hub-cinchonas), which were tested as organocatalysts and their catalytic activities were compared with the parent cinchona (hydroquinine) catalyst. We showed that in the hydroxyalkylation reaction of indole, hydroquinine provides good enantioselectivities (up to 73% ee), while the four new size-enlarged derivatives resulted in significantly lower values (up to 29% ee) in this reaction. Anchoring cinchonas to trifunctional cores was found to facilitate nanofiltration-supported catalyst recovery using the PolarClean alternative solvent. The C3-symmetric size-enlarged organocatalysts were completely rejected by all the applied membranes, whereas the separation of hydroquinine was found to be insufficient when using organic solvent nanofiltration. Furthermore, the asymmetric catalysis was successfully demonstrated in the case of the Michael reaction of 1,3-diketones and trans-β-nitrostyrene using Hub3-cinchona (up to 96% ee) as a result of the positive effect of the C3-symmetric structure using a bulkier substrate. This equates to an increased selectivity of the catalyst in comparison to hydroquinine in the latter Michael reaction.
Collapse
|
3
|
Kovács Z, Csámpai A. 2,3-Dihydroferroceno[3,4]pyrrolo[2,1-b]thiazol-5(8b)-ones: Synthesis, Structure and DFT Study on the Mechanism of Chemo- and Diastereoslective Annulations of ( Sp)-2-Formylferrocenecarbonyl Fluoride and ( Sp)-2-Formylferrocenecarboxylic Acid. Molecules 2021; 26:molecules26051420. [PMID: 33808035 PMCID: PMC7961964 DOI: 10.3390/molecules26051420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/19/2021] [Accepted: 03/01/2021] [Indexed: 11/16/2022] Open
Abstract
By means of the annulation of easy-to-handle yet sufficiently reactive (Sp)-2-formylferrocenecar- bonyl fluoride with the hydrochlorides of cysteamine and the methyl esters of enentiomer cysteines conducted in dichloromethane at room temperature in the presence of pyridine, the first members of 2,3-dihydroferroceno[3,4]pyrrolo[2,1-b]thiazol-5(8bH)-ones with the elements of planar- and central chirality were prepared as single enantiomers. An atom economic procedure was also elaborated for the synthesis of these organometallic heterocycles directly exploring (Sp)-2-formylferrocenecarboxylic acid in situ activated by CDI and TFA, sequentially added to the reaction mixture. The relative and consequently, the absolute, configuration of the isolated diastereomers was determined by NMR measurements supported by DFT structural optimization. On the basis of the results of synthetic control experiments and a series of further DFT modelling studies, including energetic and MO analysis of the iminium intermediates, we propose a mechanism for the thiazolidine-forming annulations that proceed via primary N-acylation followed by proton-mediated cyclocondensation and subsequent diastereoselective sulfhydryl-attack on the resulting iminium center.
Collapse
|
4
|
Işılar Ö, Bulut A, Sahin Yaglioglu A, Demirtaş İ, Arat E, Türk M. Synthesis and biological evaluation of novel urea, thiourea and squaramide diastereomers possessing sugar backbone. Carbohydr Res 2020; 492:107991. [DOI: 10.1016/j.carres.2020.107991] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/22/2020] [Accepted: 03/23/2020] [Indexed: 01/27/2023]
|
5
|
Novel Polycondensed Partly Saturated β-Carbolines Including Ferrocene Derivatives: Synthesis, DFT-Supported Structural Analysis, Mechanism of Some Diastereoselective Transformations and a Preliminary Study of Their in vitro Antiproliferative Effects. Molecules 2020; 25:molecules25071599. [PMID: 32244444 PMCID: PMC7181298 DOI: 10.3390/molecules25071599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 11/17/2022] Open
Abstract
Use of a Pictet-Spengler reaction of tryptamine and l-tryptophan methyl ester and subsequent reduction of the nitro group followed by further cyclocondensation with aryl aldehydes and formyl–substituted carboxylic acids, including ferrocene-based components, furnished a series of diastereomeric 6-aryl-substituted 5,6,8,9,14,14b-hexahydroindolo[2′,3′:3,4]pyrido[1-c]-quinazolines and 5,5b,17,18-tetrahydroindolo[2′,3′:3,4]pyrido[1,2-c]isoindolo[2,1-a]quinazolin-11-(15bH)-ones with the elements of central-, planar and conformational chirality. The relative configuration and the conformations of the novel polycyclic indole derivatives were determined by 1H- and 13C-NMR methods supplemented by comparative DFT analysis of the possible diastereomers. The structure of one of the pentacyclic methyl esters with defined absolute configuration “S” was also confirmed by single crystal X-ray diffraction measurement. Accounting for the characteristic substituent-dependent diastereoselective formation of the products multistep mechanisms were proposed on the basis of the results of DFT modeling. Preliminary in vitro cytotoxic assays of the products revealed moderate-to-significant antiproliferative effects against PANC-1-, COLO-205-, A-2058 and EBC-1 cell lines that proved to be highly dependent on the stereostructure and on the substitution pattern of the pending aryl substituent.
Collapse
|
6
|
Jernei T, Duró C, Dembo A, Lajkó E, Takács A, Kőhidai L, Schlosser G, Csámpai A. Synthesis, Structure and In Vitro Cytotoxic Activity of Novel Cinchona-Chalcone Hybrids with 1,4-Disubstituted- and 1,5-Disubstituted 1,2,3-Triazole Linkers. Molecules 2019; 24:E4077. [PMID: 31718009 PMCID: PMC6891474 DOI: 10.3390/molecules24224077] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/06/2019] [Accepted: 11/06/2019] [Indexed: 01/25/2023] Open
Abstract
By means of copper(I)-and ruthenium(II)-catalyzed click reactions of quinine- and quinidine-derived alkynes with azide-substituted chalcones a systematic series of novel cinchona-chalcone hybrid compounds, containing 1,4-disubstituted- and 1,5-disubstituted 1,2,3-triazole linkers, were synthesized and evaluated for their cytotoxic activity on four human malignant cell lines (PANC-1, COLO-205, A2058 and EBC-1). In most cases, the cyclization reactions were accompanied by the transition-metal-catalyzed epimerization of the C9-stereogenic centre in the cinchona fragment. The results of the in vitro assays disclosed that all the prepared hybrids exhibit marked cytotoxicity in concentrations of low micromolar range, while the C9-epimerized model comprising quinidine- and (E)-1-(4-(3-oxo-3-(3,4,5-trimethoxyphenyl)prop-1-en-1-yl)phenyl) fragments, connected by 1,5-disubstituted 1,2,3-triazole linker, and can be regarded as the most potent lead of which activity is probably associated with a limited conformational space allowing for the adoption of a relatively rigid well-defined conformation identified by DFT modelling. The mechanism of action of this hybrid along with that of a model with markedly decreased activity were approached by comparative cell-cycle analyses in PANC-1 cells. These studies disclosed that the hybrid of enhanced antiproliferative activity exerts significantly more extensive inhibitory effects in subG1, S and G2/M phases than does the less cytotoxic counterpart.
Collapse
Affiliation(s)
- Tamás Jernei
- MTA-ELTE Research Group of Peptide Chemistry, Pázmány P. sétány 1/A, H-1117 Budapest, Hungary; (T.J.); (G.S.)
| | - Cintia Duró
- Department of Inorganic Chemistry, Eötvös Loránd University (ELTE), Pázmány P. sétány 1/A, H-1117 Budapest, Hungary; (C.D.); (A.D.)
| | - Antonio Dembo
- Department of Inorganic Chemistry, Eötvös Loránd University (ELTE), Pázmány P. sétány 1/A, H-1117 Budapest, Hungary; (C.D.); (A.D.)
| | - Eszter Lajkó
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (E.L.); (A.T.); (L.K.)
| | - Angéla Takács
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (E.L.); (A.T.); (L.K.)
| | - László Kőhidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (E.L.); (A.T.); (L.K.)
| | - Gitta Schlosser
- MTA-ELTE Research Group of Peptide Chemistry, Pázmány P. sétány 1/A, H-1117 Budapest, Hungary; (T.J.); (G.S.)
- Department of Analytical Chemistry, Eötvös Loránd University (ELTE), Pázmány P. sétány 1/A, H-1117 Budapest, Hungary
| | - Antal Csámpai
- Department of Inorganic Chemistry, Eötvös Loránd University (ELTE), Pázmány P. sétány 1/A, H-1117 Budapest, Hungary; (C.D.); (A.D.)
| |
Collapse
|
7
|
Saeed A, Mustafa MN, Zain-ul-Abideen M, Shabir G, Erben MF, Flörke U. Current developments in chemistry, coordination, structure and biological aspects of 1-(acyl/aroyl)-3- (substituted)thioureas: advances Continue …. J Sulphur Chem 2018. [DOI: 10.1080/17415993.2018.1551488] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University-45320, Islamabad, Pakistan
| | | | | | - Ghulam Shabir
- Department of Chemistry, Quaid-i-Azam University-45320, Islamabad, Pakistan
| | - Mauricio F. Erben
- CEQUINOR (UNLP, CONICET-CCT La Plata), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata, República Argentina
| | - Ulrich Flörke
- Department Chemie, Fakultät für Naturwissenschaften, Universität Paderborn Paderborn, Germany
| |
Collapse
|
8
|
Duan XE, Li R, Tong HB, Li YQ, Bai SD, Guo YJ, Liu DS. Synthesis and structural characterization of electrochemically reversible bisferrocenes containing bis(acyl-thiourea)s: enantiomers and conformers. NEW J CHEM 2017. [DOI: 10.1039/c6nj03539f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Enantiomeric and conformational isomers of chiral bisferrocenyl-modified bis(acyl-thiourea)s; their crystal packing and electrochemically reversible redox reaction properties.
Collapse
Affiliation(s)
- Xin-E Duan
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- P. R. China
| | - Rui Li
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- P. R. China
- Institute of Applied Chemistry
| | - Hong-Bo Tong
- Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Ying-Qi Li
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- P. R. China
| | - Sheng-Di Bai
- Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Yu-Jing Guo
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Dian-Sheng Liu
- Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- P. R. China
| |
Collapse
|
9
|
Podolski-Renić A, Bősze S, Dinić J, Kocsis L, Hudecz F, Csámpai A, Pešić M. Ferrocene–cinchona hybrids with triazolyl-chalcone linkers act as pro-oxidants and sensitize human cancer cell lines to paclitaxel. Metallomics 2017; 9:1132-1141. [DOI: 10.1039/c7mt00183e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Epimeric ferrocene–quinidine hybrids with triazolyl-chalcone linkers act as pro-oxidative agents and autophagy modulators in paclitaxel resistant cancer cells.
Collapse
Affiliation(s)
- Ana Podolski-Renić
- Department of Neurobiology
- Institute for Biological Research “Siniša Stanković” (IBISS)
- University of Belgrade
- Belgrade
- Serbia
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry
- Eötvös Loránd University
- Budapest
- Hungary
| | - Jelena Dinić
- Department of Neurobiology
- Institute for Biological Research “Siniša Stanković” (IBISS)
- University of Belgrade
- Belgrade
- Serbia
| | - László Kocsis
- Department of Organic Chemistry
- Eötvös Loránd University (ELTE)
- Budapest
- Hungary
| | - Ferenc Hudecz
- MTA-ELTE Research Group of Peptide Chemistry
- Eötvös Loránd University
- Budapest
- Hungary
- Department of Organic Chemistry
| | - Antal Csámpai
- Department of Inorganic Chemistry
- Eötvös Loránd University (ELTE)
- Budapest
- Hungary
| | - Milica Pešić
- Department of Neurobiology
- Institute for Biological Research “Siniša Stanković” (IBISS)
- University of Belgrade
- Belgrade
- Serbia
| |
Collapse
|
10
|
Fodor KJ, Hegedüs K, Csomós P, Fodor L, Gubán D, Sohár P, Csámpai A. Synthesis, Structural Elucidation, Cyclic Voltammetry, and Theoretical Modelling of 2‐Ferrocenyl‐4
H
‐benzo[
e
][1,3]thiazines and 2‐Aryl‐4
H
‐ferroceno[
e
][1,3]thiazines. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kinga Judit Fodor
- Institute of Chemistry Eötvös Loránd University POB 32 1518 Budapest Hungary
| | - Kristóf Hegedüs
- Institute of Chemistry Eötvös Loránd University POB 32 1518 Budapest Hungary
| | - Péter Csomós
- Stereochemistry Research Group of the Hungarian Academy of Sciences Hungarian Academy of Sciences Eötvös u. 6. 6720 Szeged Hungary
| | - Lajos Fodor
- Stereochemistry Research Group of the Hungarian Academy of Sciences Hungarian Academy of Sciences Eötvös u. 6. 6720 Szeged Hungary
| | - Dorottya Gubán
- Research Centre of Natural Sciences Hungarian Academy of Sciences Magyar Tudósok körútja 2 1117 Budapest Hungary
| | - Pál Sohár
- Institute of Chemistry Eötvös Loránd University POB 32 1518 Budapest Hungary
| | - Antal Csámpai
- Institute of Chemistry Eötvös Loránd University POB 32 1518 Budapest Hungary
| |
Collapse
|
11
|
Binh LH, Van NTT, Kien VT, My NTT, Van Chinh L, Nga NT, Tien HX, Thao DT, Vu TK. Synthesis and in vitro cytotoxic evaluation of new triazole derivatives based on artemisinin via click chemistry. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1524-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Kocsis L, Szabó I, Bősze S, Jernei T, Hudecz F, Csámpai A. Synthesis, structure and in vitro cytostatic activity of ferrocene-Cinchona hybrids. Bioorg Med Chem Lett 2015; 26:946-949. [PMID: 26739780 DOI: 10.1016/j.bmcl.2015.12.059] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 12/14/2015] [Accepted: 12/17/2015] [Indexed: 10/22/2022]
Abstract
Exploring copper(I)- and ruthenium(II)-catalyzed azide-alkyne cycloadditions and a Sonogashira protocol, novel cytostatic ferrocene-cinchona hybrids were synthetized displaying significant in vitro activity on HepG-2 and HT-29 cells. Preliminary SAR studies disclosed that compounds incorporating linkers with 1,2,3-triazole and chalchone residues can be considered as promising lead structures. According to the best of our knowledge this is the first letter on the incorporation of ferrocene nucleus in the reputed cinchona family via triazole and chalcone linkers with established pharmaceutical profile.
Collapse
Affiliation(s)
- László Kocsis
- MTA-ELTE Research Group of Peptide Chemistry, Budapest Pázmány P. sétány 1/A, H-1117, Hungary
| | - Ildikó Szabó
- Department of Organic Chemistry, Eötvös Loránd University (ELTE), Budapest Pázmány P. sétány 1/A, H-1117, Hungary
| | - Szilvia Bősze
- Department of Organic Chemistry, Eötvös Loránd University (ELTE), Budapest Pázmány P. sétány 1/A, H-1117, Hungary
| | - Tamás Jernei
- Department of Inorganic Chemistry, Eötvös Loránd University (ELTE), Budapest Pázmány P. sétány 1/A, H-1117, Hungary
| | - Ferenc Hudecz
- MTA-ELTE Research Group of Peptide Chemistry, Budapest Pázmány P. sétány 1/A, H-1117, Hungary; Department of Organic Chemistry, Eötvös Loránd University (ELTE), Budapest Pázmány P. sétány 1/A, H-1117, Hungary
| | - Antal Csámpai
- Department of Inorganic Chemistry, Eötvös Loránd University (ELTE), Budapest Pázmány P. sétány 1/A, H-1117, Hungary.
| |
Collapse
|
13
|
Synthesis and structure of novel ferrocene-containing β-carbolines including polycondensed derivatives with the elements of planar-, central- and conformational chirality. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
14
|
Škoch K, Císařová I, Štěpnička P. Phosphinoferrocene Ureas: Synthesis, Structural Characterization, and Catalytic Use in Palladium-Catalyzed Cyanation of Aryl Bromides. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00197] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Karel Škoch
- Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030, 128
40 Prague 2, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030, 128
40 Prague 2, Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030, 128
40 Prague 2, Czech Republic
| |
Collapse
|
15
|
Bailon-Moscoso N, Romero-Benavides JC, Tinitana-Imaicela F, Ostrosky-Wegman P. Medicinal plants of Ecuador: a review of plants with anticancer potential and their chemical composition. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1335-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
16
|
Abstract
Nature is full of dimeric alkaloids of various types from many plant families, some of them with interesting biological properties. However, dimeric Cinchona alkaloids were not isolated from any species but were products of designed partial chemical synthesis. Although the Cinchona bark is amongst the sources of oldest efficient medicines, the synthetic dimers found most use in the field of asymmetric synthesis. Prominent examples include the Sharpless dihydroxylation and aminohydroxylation ligands, and dimeric phase transfer catalysts. In this article the syntheses of Cinchona alkaloid dimers and oligomers are reviewed, and their structure and applications are outlined. Various synthetic routes exploit reactivity of the alkaloids at the central 9-hydroxyl group, quinuclidine, and quinoline rings, as well as 3-vinyl group. This availability of reactive sites, in combination with a plethora of linker molecules, contributes to the diversity of the products obtained.
Collapse
Affiliation(s)
- Przemysław J Boratyński
- Department of Organic Chemistry, Wrocław University of Technology, Wyspiańskiego 27, 50-370, Wrocław, Poland,
| |
Collapse
|
17
|
Syntheses, characterization, and anti-cancer activities of pyridine-amide based compounds containing appended phenol or catechol groups. J CHEM SCI 2014. [DOI: 10.1007/s12039-014-0671-3] [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]
|
18
|
Csókás D, Károlyi BI, Bősze S, Szabó I, Báti G, Drahos L, Csámpai A. 2,3-Dihydroimidazo[1,2-b]ferroceno[d]pyridazines and a 3,4-dihydro-2H-pyrimido[1,2-b]ferroceno[d]pyridazine: Synthesis, structure and in vitro antiproliferation activity on selected human cancer cell lines. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.10.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
19
|
Selvanayagam S, Ravikumar K, Kathiravan S, Raghunathan R. 2-[(Ferrocen-1-yl)(hydroxy)methyl]prop-2-enenitrile. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m669. [PMID: 24454176 PMCID: PMC3885001 DOI: 10.1107/s1600536813031218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 11/14/2013] [Indexed: 11/10/2022]
Abstract
In the title ferrocene derivative, [Fe(C5H5)(C9H8NO)], the dihedral angle between the enenitrile group and the substituted cyclopentadienyl ring is 71.2 (1)°. The cyclopentadienyl rings of the ferrocene moiety are arranged in an eclipsed conformation. The hydroxy group, and the corresponding methine H atom, are disordered over two sets of sites with site-occupancy factors of 0.744 (4) and 0.256 (4). An intramolecular C—H...O close contact is observed. In the crystal, O—H...N hydrogen bonds form aC(6) chain along [100].
Collapse
|
20
|
Synthesis, spectroscopy, X-ray analysis and in vitro antiproliferative effect of ferrocenylmethylene-hydrazinylpyridazin-3(2H)-ones and related ferroceno[d]pyridazin-1(2H)-ones. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.06.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Kiss K, Kocsis VL, Holczbauer T, Czugler M, Silaghi-Dumitrescu L, Csámpai A. 2-Arylideneferroceno[e]cyclohexanones and related 3-aryl-3,3a,4,5-tetrahydroferroceno[g]indazoles: Synthesis, NMR-, DFT- and X-ray analysis. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.11.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
22
|
Wu R, Zhu C, Du XJ, Xiong LX, Yu SJ, Liu XH, Li ZM, Zhao WG. Synthesis, crystal structure and larvicidal activity of novel diamide derivatives against Culex pipiens. Chem Cent J 2012; 6:99. [PMID: 22963735 PMCID: PMC3537643 DOI: 10.1186/1752-153x-6-99] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 08/28/2012] [Indexed: 11/15/2022] Open
Abstract
Background Culex is an important mosquito as vectors for the transmission of serious diseases, such as filariasis, West Nile virus, dengue, yellow fever, chikungunya and other encephalitides. Nearly one billion people in the developing countries are at risk. In order to discover new bioactive molecules and pesticides acting on mosquito, we designed active amide structure and synthesized a series of novel diamide derivatives. Results A series of novel diamide derivatives were designed and synthesized. Their structures were characterized by 1 H NMR, FTIR and HRMS. The single crystal structure of compound 6n was determined to further elucidate the structure. Biological activities of these compounds were tested. Most of them exhibited higher mosquito larvicidal activity. Especially compound 6r displayed relatively good activity to reach 70% at 2 μg/mL. Conclusion A practical synthetic route to amide derivatives by the reaction of amide with another acid is presented. This study suggests that the diamide derivatives exhibited good effective against mosquito.
Collapse
Affiliation(s)
- Rui Wu
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center (Tianjin), Nankai University, Tianjin 300071, China.
| | | | | | | | | | | | | | | |
Collapse
|