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Prabha K, Satheeshkumar R, Aathi MS, Chandrasekar C, Sukantha TA, Gnanamangai BM, Acevedo R, Sayin K, Prasad KJR. Eaton's reagent is an alternative of PPA: Solvent free synthesis, molecular docking and ADME studies of new angular and linear carbazole based naphtho naphthyridines. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Ma J, Liu H, He X, Chen Z, Liu Y, Hou C, Sun Z, Chu W. Ni-Catalyzed C–H Cyanation of (Hetero)arenes with 2-Cyanoisothiazolidine 1,1-Dioxide as a Cyanation Reagent. Org Lett 2021; 23:2868-2872. [DOI: 10.1021/acs.orglett.1c00468] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Junjie Ma
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Hao Liu
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Xin He
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Zhicheng Chen
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Yue Liu
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Chuanfu Hou
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Zhizhong Sun
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
| | - Wenyi Chu
- School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P.R. China
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Kraus Y, Glas C, Melzer B, Gao L, Heise C, Preuße M, Ahlfeld J, Bracher F, Thorn-Seshold O. Isoquinoline-based biaryls as a robust scaffold for microtubule inhibitors. Eur J Med Chem 2020; 186:111865. [PMID: 31735573 DOI: 10.1016/j.ejmech.2019.111865] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/08/2019] [Accepted: 11/06/2019] [Indexed: 11/25/2022]
Abstract
We here report the discovery of isoquinoline-based biaryls as a new scaffold for colchicine domain tubulin inhibitors. Colchicinoid inhibitors offer highly desirable cytotoxic and vascular disrupting bioactivities, but their further development requires improving in vivo robustness and tolerability: properties that both depend on the scaffold structure employed. We have developed isoquinoline-based biaryls as a novel scaffold for high-potency tubulin inhibitors, with excellent robustness, druglikeness, and facile late-stage structural diversification, accessible through a tolerant synthetic route. We confirmed their bioactivity mechanism in vitro, developed soluble prodrugs, and established safe in vivo dosing in mice. By addressing several problems facing the current families of inhibitors, we expect that this new scaffold will find a range of in vivo applications towards translational use in cancer therapy.
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Affiliation(s)
- Yvonne Kraus
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Carina Glas
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Benedikt Melzer
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Li Gao
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Constanze Heise
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Monique Preuße
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Julia Ahlfeld
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Franz Bracher
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany
| | - Oliver Thorn-Seshold
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstrasse 5-13, Munich, 81377, Germany.
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Rodríguez-Arce E, Cancino P, Arias-Calderón M, Silva-Matus P, Saldías M. Oxoisoaporphines and Aporphines: Versatile Molecules with Anticancer Effects. Molecules 2019; 25:E108. [PMID: 31892146 PMCID: PMC6983244 DOI: 10.3390/molecules25010108] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 12/23/2019] [Accepted: 12/24/2019] [Indexed: 02/07/2023] Open
Abstract
Cancer is a disease that involves impaired genome stability with a high mortality index globally. Since its discovery, many have searched for effective treatment, assessing different molecules for their anticancer activity. One of the most studied sources for anticancer therapy is natural compounds and their derivates, like alkaloids, which are organic molecules containing nitrogen atoms in their structure. Among them, oxoisoaporphine and sampangine compounds are receiving increased attention due to their potential anticancer effects. Boldine has also been tested as an anticancer molecule. Boldine is the primary alkaloid extract from boldo, an endemic tree in Chile. These compounds and their derivatives have unique structural properties that potentially have an anticancer mechanism. Different studies showed that this molecule can target cancer cells through several mechanisms, including reactive oxygen species generation, DNA binding, and telomerase enzyme inhibition. In this review, we summarize the state-of-art research related to oxoisoaporphine, sampangine, and boldine, with emphasis on their structural characteristics and the relationship between structure, activity, methods of extraction or synthesis, and anticancer mechanism. With an effective cancer therapy still lacking, these three compounds are good candidates for new anticancer research.
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Affiliation(s)
- Esteban Rodríguez-Arce
- Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago 8370178, Chile;
| | - Patricio Cancino
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380544, Chile;
| | - Manuel Arias-Calderón
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago 8370146, Chile;
| | - Paul Silva-Matus
- Departamento de Ciencias de la Salud, Universidad de Aysén, Coyhaique 5951537, Chile;
| | - Marianela Saldías
- Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago 8370178, Chile;
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Melzer BC, Plodek A, Bracher F. Functionalization of 4-bromobenzo[ c][2,7]naphthyridine via regioselective direct ring metalation. A novel approach to analogues of pyridoacridine alkaloids. Beilstein J Org Chem 2019; 15:2304-2310. [PMID: 31598182 PMCID: PMC6774065 DOI: 10.3762/bjoc.15.222] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 09/18/2019] [Indexed: 12/25/2022] Open
Abstract
Readily available 4-bromobenzo[c][2,7]naphthyridine undergoes regioselective direct ring metalation at C-5 with TMPMgCl∙LiCl at −40 °C. Quenching with various electrophiles gives a broad range of 5-substituted products, which are building blocks for the synthesis of heterocyclic natural products and analogues thereof. In combination with a Parham-type cyclization a novel approach to pyrido[4,3,2-mn]acridones has been worked out.
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Affiliation(s)
- Benedikt C Melzer
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University Munich, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Alois Plodek
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University Munich, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Franz Bracher
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University Munich, Butenandtstr. 5-13, 81377 Munich, Germany
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Recent applications of magnesium- and Zinc-TMP amides in the synthesis of bioactive targets. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Melzer BC, Felber JG, Bracher F. Aminomethylation/hydrogenolysis as an alternative to direct methylation of metalated isoquinolines - a novel total synthesis of the alkaloid 7-hydroxy-6-methoxy-1-methylisoquinoline. Beilstein J Org Chem 2018; 14:130-134. [PMID: 29441136 PMCID: PMC5789437 DOI: 10.3762/bjoc.14.8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 12/27/2017] [Indexed: 12/02/2022] Open
Abstract
Highly-substituted isoquinolines are important scaffolds in syntheses of natural products and in drug development and hence, effective synthetic approaches are required. Here we present a novel method for the introduction of a methyl group at C1 of isoquinolines. This is exemplified by a new total synthesis of the alkaloid 7-hydroxy-6-methoxy-1-methylisoquinoline. Direct metalation of 7-benzyloxy-6-methoxyisoquinoline with Knochel–Hauser base, followed by cuprate-mediated methylation gives the target alkaloid directly, but separation from the educt is cumbersome. Quenching the metalated intermediate with Eschenmoser’s reagent gives an easy to clean tertiary benzylamine, which, after quaternization with iodomethane, is easily converted into the desired 1-methylisoquinoline by hydrogenolysis of both the benzylamine and benzyl ether groups.
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Affiliation(s)
- Benedikt C Melzer
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Jan G Felber
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Franz Bracher
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University of Munich, Butenandtstr. 5-13, D-81377 Munich, Germany
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