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Petró JL, Bényei G, Bana P, Linke N, Horti F, Szabó JE, Szalai KK, Hornyánszky G, Greiner I, Éles J. Design, synthesis and biological evaluation of novel cyclic malonamide derivatives as selective RIPK1 inhibitors. Bioorg Med Chem Lett 2024; 100:129643. [PMID: 38316369 DOI: 10.1016/j.bmcl.2024.129643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/15/2024] [Accepted: 01/31/2024] [Indexed: 02/07/2024]
Abstract
Receptor-interacting serine/threonine-protein kinase 1 (RIPK1) plays a key role in cell death and inflammation. RIPK1 is a well-established therapeutic target, due to the presence of a unique kinase-regulating allosteric pocket, which enables selective inhibition. Herein we used GSK2982772 as our starting point in our discovery campaign. Applying isosteric replacement, we successfully identified the malonamide scaffold, instead of the well-established serine template. Further structural optimization led to the design and synthesis of a series of analog inhibitors. The enantiomers of the most promising compound were tested on 97 different kinases. The active enantiomer proved to be kinase selective.
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Affiliation(s)
- József Levente Petró
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary.
| | - Gyula Bényei
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
| | - Péter Bana
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
| | - Nikolett Linke
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
| | - Ferenc Horti
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
| | - Judit Eszter Szabó
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
| | | | - Gábor Hornyánszky
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 8 Budafoki Street, Budapest H-1111, Hungary
| | - István Greiner
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
| | - János Éles
- Chemical Works of Gedeon Richter Plc, 30-32 Gyömrői Street, Budapest H-1103, Hungary
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Kőrösi M, Kántor P, Bana P, Székely E. Continuous Stripping with Dense Carbon Dioxide. ACS Omega 2023; 8:46757-46762. [PMID: 38107946 PMCID: PMC10719994 DOI: 10.1021/acsomega.3c06087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/10/2023] [Accepted: 11/10/2023] [Indexed: 12/19/2023]
Abstract
The integration of flow chemistry into continuous manufacturing requires efficient, controllable, and continuous methods for the concentration of diluted solutions on relatively small scales. The design and application examples of a new continuous solvent removal process are presented. The continuous stripping method employing dense carbon dioxide is based on the formation of homogeneous mixtures of dilute organic solutions of the target molecules with a large excess of carbon dioxide at temperatures as low as 35 °C and pressures around 10 MPa. Subsequent pressure reduction results in the quick release of carbon dioxide and vaporization of a significant fraction of the organic solvent. The concentration of the solute in the separated liquid phase can be up to 40 times higher than in the feed. Among the many controllable process parameters, the most significant ones are the mass-flow rate ratio of carbon dioxide to the feed and the temperature of the phase separator. By careful setting of the operational parameters, the degree of concentration enhancement may be accurately controlled. The new apparatus-despite consisting of laboratory equipment and being built in a fume hood-could easily support pilot-scale synthetic flow chemistry, being a continuous, efficient alternative to thermal concentration methods.
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Affiliation(s)
- Márton Kőrösi
- Department
of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Petra Kántor
- Department
of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Műegyetem rakpart 3, Budapest H-1111, Hungary
| | - Péter Bana
- Richter
Gedeon NyRt., Gyömrői út 19-21, Budapest H-1103, Hungary
| | - Edit Székely
- Department
of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Műegyetem rakpart 3, Budapest H-1111, Hungary
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Éles J, Szemesi P, Bana P, Szakács Z, Greiner I. Safe and Rapid Synthesis and Utilization of 2-Azidopyridine and Related Derivatives via Continuous Flow Diazotization. CURR ORG CHEM 2023. [DOI: 10.2174/1385272827666230126141058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Abstract:
Aril azides are popular reagents in the laboratory, but their explosive properties prevent their larger-scale application. The safety risk is even greater for N-heterocyclic azides, which are rarely studied. Flow chemistry can be an effective tool in the synthesis and utilization of dangerous and explosive chemicals. In small-diameter flow reactors, good heat and mass transfer prevent local hot spots and side reactions, and since only small amounts of hazardous chemicals are present at any time, the potential danger is reduced in the event of an accident. In this work, the safe syntheses of 9 different 2-azidopyridine, 2-azidopyrimidine and 2 azidoquinoxaline derivatives were successfully achieved within the continuous-flow system. In most cases, simple work-up resulted in pure products. In-line extractive work-up was also implemented, which allowed us to transform 2-azidopyridine in a subsequent Staudinger reaction in a connected flow reactor, without manual handling of the hazardous azide.
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Affiliation(s)
- János Éles
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary
| | - Péter Szemesi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Péter Bana
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary
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Fülöp Z, Bana P, Greiner I, Éles J. C-N Bond Formation by Consecutive Continuous-Flow Reductions towards A Medicinally Relevant Piperazine Derivative. Molecules 2021; 26:molecules26072040. [PMID: 33918489 PMCID: PMC8038289 DOI: 10.3390/molecules26072040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 11/16/2022] Open
Abstract
A new, continuous-flow consecutive reduction method was developed for the C-N bond formation in the synthesis of the key intermediate of the antipsychotic drug cariprazine. The two-step procedure consists of a DIBAL-H mediated selective ester reduction conducted in a novel, miniature alternating diameter reactor, followed by reductive amination using catalytic hydrogenation on 5% Pt/C. The connection of the optimized modules was accomplished using an at-line extraction to prevent precipitation of the aluminum salt byproducts.
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Affiliation(s)
- Zsolt Fülöp
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary;
| | - Péter Bana
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary; (P.B.); (I.G.)
| | - István Greiner
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary; (P.B.); (I.G.)
| | - János Éles
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary; (P.B.); (I.G.)
- Correspondence: ; Tel.: +36-1-889-8703
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Fülöp Z, Szemesi P, Bana P, Éles J, Greiner I. Evolution of flow-oriented design strategies in the continuous preparation of pharmaceuticals. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00273a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review focuses on the flow-oriented design (FOD) in the multi-step continuous-flow synthesis of active pharmaceutical ingredients.
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Affiliation(s)
- Zsolt Fülöp
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Péter Szemesi
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
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Bana P, Szigetvári Á, Kóti J, Éles J, Greiner I. Flow-oriented synthetic design in the continuous preparation of the aryl piperazine drug flibanserin. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00266e] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The first integrated continuous-flow synthesis of the drug substance flibanserin was developed, using an uninterrupted four-step sequence, via an unprecedented route.
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Bana P, Lakó Á, Kiss NZ, Béni Z, Szigetvári Á, Kóti J, Túrós GI, Éles J, Greiner I. Synthesis of Urea Derivatives in Two Sequential Continuous-Flow Reactors. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Péter Bana
- Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Ágnes Lakó
- Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Nóra Zsuzsa Kiss
- Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Zoltán Béni
- Gedeon Richter Plc., PO Box 27, 1475 Budapest, Hungary
| | | | - János Kóti
- Gedeon Richter Plc., PO Box 27, 1475 Budapest, Hungary
| | | | - János Éles
- Gedeon Richter Plc., PO Box 27, 1475 Budapest, Hungary
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Abstract
Debated selective microwave heating effects were investigated in a rearrangement and a benzylation reaction involving 2-substituted pyridines. An accurate, reproducible comparison technique and simultaneous temperature measurement using both external infrared and internal fibre optic sensors were utilized. The experimental details of the benzylation reaction were thoroughly addressed to resolve the inconsistencies that have been discussed previously in the literature. Hidden inhomogeneities in temperature and concentration were revealed within the reaction mixtures during microwave heating, which could be prevented by the modification of the vessel wall using an inert fluoropolymer liner. Instead of the previously proposed microscopic thermal microwave effect, the enhanced reaction rate could be explained by macroscopic-scale localized heating in the boundary layers close to the vessel surface in the microwave-heated experiment.
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Bana P, Örkényi R, Lövei K, Lakó Á, Túrós GI, Éles J, Faigl F, Greiner I. The route from problem to solution in multistep continuous flow synthesis of pharmaceutical compounds. Bioorg Med Chem 2016; 25:6180-6189. [PMID: 28087127 DOI: 10.1016/j.bmc.2016.12.046] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/20/2016] [Accepted: 12/27/2016] [Indexed: 12/11/2022]
Abstract
Recent advances in the field of continuous flow chemistry allow the multistep preparation of complex molecules such as APIs (Active Pharmaceutical Ingredients) in a telescoped manner. Numerous examples of laboratory-scale applications are described, which are pointing towards novel manufacturing processes of pharmaceutical compounds, in accordance with recent regulatory, economical and quality guidances. The chemical and technical knowledge gained during these studies is considerable; nevertheless, connecting several individual chemical transformations and the attached analytics and purification holds hidden traps. In this review, we summarize innovative solutions for these challenges, in order to benefit chemists aiming to exploit flow chemistry systems for the synthesis of biologically active molecules.
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Affiliation(s)
- Péter Bana
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | - Róbert Örkényi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | - Klára Lövei
- Gedeon Richter Plc., Gyömrői út 19-21, H-1103 Budapest, Hungary
| | - Ágnes Lakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | | | - János Éles
- Gedeon Richter Plc., Gyömrői út 19-21, H-1103 Budapest, Hungary
| | - Ferenc Faigl
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary; MTA-BME Organic Chemical Technology Research Group, Budafoki út 8, H-1111 Budapest, Hungary
| | - István Greiner
- Gedeon Richter Plc., Gyömrői út 19-21, H-1103 Budapest, Hungary.
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Abstract
In microwave-assisted organic synthesis, the question of microwave effects is still debated. Proper examination of these hypothesized phenomena is encumbered by some specific features of microwave heating. We devise a convenient method to eliminate most of the irreproducibility observed in microwave-heated organic transformations by thermal conditioning of the microwave reactor cavity. To show the utility of this approach, we investigated a reaction of 2-chloropyridine, in which microwave conditions were shown to be beneficial by previous studies. Using our method to ensure proper reproducibility together with fibre optic temperature measurement, the observed differences were traced back to large hidden thermal differences, while non-thermal effects could not be detected in the comparison experiments.
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Ilkei V, Bana P, Tóth F, Palló A, Holczbauer T, Czugler M, Sánta Z, Dékány M, Szigetvári Á, Hazai L, Szántay C, Szántay C, Kalaus G. A simple synthesis of bannucine and 5′-epibannucine from (−)-vindoline. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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