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Garamvölgyi R, Dobos J, Sipos A, Boros S, Illyés E, Baska F, Kékesi L, Szabadkai I, Szántai-Kis C, Kéri G, Őrfi L. Design and synthesis of new imidazo[1,2-a]pyridine and imidazo[1,2-a]pyrazine derivatives with antiproliferative activity against melanoma cells. Eur J Med Chem 2016. [PMID: 26724730 DOI: 10.1016/j.ejmech.2015.12.001.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Melanoma is an aggressive form of skin cancer and it is generally associated with poor prognosis in patients with late-stage disease. Due to the increasing occurrence of melanoma, there is a need for the development of novel therapies. A new series of diarylamide and diarylurea derivatives containing imidazo[1,2-a]pyridine or imidazo[1,2-a]pyrazine scaffold was designed and synthesized to investigate their in vitro efficacy against the A375P human melanoma cell line. We found several compounds expressing submicromolar IC50 values against the A375P cells, from which 15d, 17e, 18c, 18h, 18i demonstrated the highest potencies with IC50 below 0.06 μM.
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Affiliation(s)
- Rita Garamvölgyi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary; Vichem Chemie Research Ltd., Budapest, Hungary
| | - Judit Dobos
- Vichem Chemie Research Ltd., Budapest, Hungary
| | - Anna Sipos
- Vichem Chemie Research Ltd., Budapest, Hungary
| | | | | | | | | | | | | | - György Kéri
- Vichem Chemie Research Ltd., Budapest, Hungary; MTA-SE Pathobiochemistry Research Group, Department of Medical Chemistry, Semmelweis University, Budapest, Hungary
| | - László Őrfi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary; Vichem Chemie Research Ltd., Budapest, Hungary.
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Garamvölgyi R, Dobos J, Sipos A, Boros S, Illyés E, Baska F, Kékesi L, Szabadkai I, Szántai-Kis C, Kéri G, Őrfi L. Design and synthesis of new imidazo[1,2- a ]pyridine and imidazo[1,2- a ]pyrazine derivatives with antiproliferative activity against melanoma cells. Eur J Med Chem 2016; 108:623-643. [PMID: 26724730 DOI: 10.1016/j.ejmech.2015.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 11/28/2015] [Accepted: 12/01/2015] [Indexed: 10/22/2022]
Affiliation(s)
- Rita Garamvölgyi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary; Vichem Chemie Research Ltd., Budapest, Hungary
| | - Judit Dobos
- Vichem Chemie Research Ltd., Budapest, Hungary
| | - Anna Sipos
- Vichem Chemie Research Ltd., Budapest, Hungary
| | | | | | | | | | | | | | - György Kéri
- Vichem Chemie Research Ltd., Budapest, Hungary; MTA-SE Pathobiochemistry Research Group, Department of Medical Chemistry, Semmelweis University, Budapest, Hungary
| | - László Őrfi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary; Vichem Chemie Research Ltd., Budapest, Hungary.
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Sipos A, Pató J, Székely R, Hartkoorn RC, Kékesi L, Őrfi L, Szántai-Kis C, Mikušová K, Svetlíková Z, Korduláková J, Nagaraja V, Godbole AA, Bush N, Collin F, Maxwell A, Cole ST, Kéri G. Lead selection and characterization of antitubercular compounds using the Nested Chemical Library. Tuberculosis (Edinb) 2015; 95 Suppl 1:S200-6. [PMID: 25801335 DOI: 10.1016/j.tube.2015.02.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Discovering new drugs to treat tuberculosis more efficiently and to overcome multidrug resistance is a world health priority. To find novel antitubercular agents several approaches have been used in various institutions worldwide, including target-based approaches against several validated mycobacterial enzymes and phenotypic screens. We screened more than 17,000 compounds from Vichem's Nested Chemical Library™ using an integrated strategy involving whole cell-based assays with Corynebacterium glutamicum and Mycobacterium tuberculosis, and target-based assays with protein kinases PknA, PknB and PknG as well as other targets such as PimA and bacterial topoisomerases simultaneously. With the help of the target-based approach we have found very potent hits inhibiting the selected target enzymes, but good minimal inhibitory concentrations (MIC) against M. tuberculosis were not achieved. Focussing on the whole cell-based approach several potent hits were found which displayed minimal inhibitory concentrations (MIC) against M. tuberculosis below 10 μM and were non-mutagenic, non-cytotoxic and the targets of some of the hits were also identified. The most active hits represented various scaffolds. Medicinal chemistry-based lead optimization was performed applying various strategies and, as a consequence, a series of novel potent compounds were synthesized. These efforts resulted in some effective potential antitubercular lead compounds which were confirmed in phenotypic assays.
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Affiliation(s)
- Anna Sipos
- MTA-SE Pathobiochemistry Research Group, Department of Medical Chemistry, Semmelweis University, Tűzoltó u. 37-47, H-1094 Budapest, Hungary; Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary.
| | - János Pató
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary
| | - Rita Székely
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary; Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Ruben C Hartkoorn
- Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - László Kékesi
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary
| | - László Őrfi
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary; Semmelweis University, Department of Pharmaceutical Chemistry, Hőgyes Endre u. 9, H-1092 Budapest, Hungary
| | - Csaba Szántai-Kis
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary
| | - Katarína Mikušová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina CH-1, Bratislava, Slovakia
| | - Zuzana Svetlíková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina CH-1, Bratislava, Slovakia
| | - Jana Korduláková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina CH-1, Bratislava, Slovakia
| | - Valakunja Nagaraja
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Adwait Anand Godbole
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Natassja Bush
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH United Kingdom
| | - Frédéric Collin
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH United Kingdom
| | - Anthony Maxwell
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH United Kingdom
| | - Stewart T Cole
- Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - György Kéri
- MTA-SE Pathobiochemistry Research Group, Department of Medical Chemistry, Semmelweis University, Tűzoltó u. 37-47, H-1094 Budapest, Hungary; Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary.
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Kékesi L, Sipos A, Németh G, Dancsó A, Illyés E, Boros S, Breza N, Nemes Z, Hegymegi-Barakonyi B, Pató J, Greff Z, Kéri G, Őrfi L. [Pyrido[2,3-b]pyrazines inhibiting both erlotinib-sensitive and erlotinib-resistant cell lines, and their preparation via regioselective condensation reaction]. Acta Pharm Hung 2014; 84:91-104. [PMID: 25470976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The EGFR inhibitor erlotinib possesses high anti-tumor effect but despite the good clinical responses in most of the cases recrudescence occures. This can be attributed to a secondary, acquired mutation causing resistance to tyrosine kinase inhibitors. In our work we were looking for small-molecule inhibitors, which simultaneously affect on the proliferation of erlotinib-sensitive PC9 cells and PC9-ER erlotinib-resistant cells. A set of molecules were selected from Vichem Chemie Research Ltd.'s kinase inhibitor compound library (Nested Chemical Library™). According to the results of medium throughput screening (MTS) of this set of compounds, novel structures with pyrido[2,3-b]pyrazine core were designed. These compounds were proved to be effective inhibitors of resistant cells in phenotypic screening. Based on these results structure-activity relationships were set up. The pyrido[2,3-b]pyrazine core was synthesized by a condensation reaction, which resulting two asymmetric products. In the reaction two regioisomer intermediates formed, and one of the products is the intermediate of the effective compounds. This condensation reaction was optimized, the regioisomers were identified by NMR analysis and X-ray crystallography. As a result of optimization we found that lower reaction temperature and replacement of dimethylformamide solvent with trifluoroacetic acid provided the undesired isomer in less than 2 % ratio.
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Kékesi L, Sipos A, Németh G, Pató J, Breza N, Baska F, Őrfi L, Kéri G. Synthesis and biological evaluation of novel pyrido[2,3-b]pyrazines inhibiting both erlotinib-sensitive and erlotinib-resistant cell lines. Bioorg Med Chem Lett 2013; 23:6152-5. [DOI: 10.1016/j.bmcl.2013.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/01/2013] [Accepted: 09/03/2013] [Indexed: 02/06/2023]
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