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Yousif D, Vaghi L, Daniliuc CG, Po R, Papagni A, Rizzo F. Regioselectivity Control in Spirobifluorene Nitration under Mild Conditions: Explaining the Crivello's Reagent Mechanism. J Org Chem 2023; 88:5285-5290. [PMID: 37126427 DOI: 10.1021/acs.joc.2c02596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The regioselective nitration of 9,9'-spirobifluorene under mild conditions is reported for the first time by operating under Menke's and Crivello's conditions. The optimized protocol allows obtaining 2-nitro and 2,2'-dinitro-9,9'-spirobifluorene in yields of 79 and 95% and, for the first time, 2,2',7-trinitro-9,9'-spirobifluorene with 66% yield. Besides, the role of dinitrate salt in Crivello's protocol has been now clarified, which opens novel scenarios in the preparation of functional materials.
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Affiliation(s)
- Dawod Yousif
- Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Luca Vaghi
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 36, 48149 Münster, Germany
| | - Riccardo Po
- Eni SpA─Renewables, New Energies and Material Science Research Center, Istituto Guido Donegani, Via Fauser 4, 28100 Novara, Italy
| | - Antonio Papagni
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Fabio Rizzo
- Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
- Istituto di Scienze e Tecnologie Chimiche "G. Natta" (SCITEC), Consiglio Nazionale delle Ricerche (CNR), via G. Fantoli 16/15, 20138 Milano, Italy
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2
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Hamdy J, Emadeldin N, Hamed MM, Frakolaki E, Katsamakas S, Vassilaki N, Zoidis G, Hirsch AKH, Abdel-Halim M, Abadi AH. Design and Synthesis of Novel Bis-Imidazolyl Phenyl Butadiyne Derivatives as HCV NS5A Inhibitors. Pharmaceuticals (Basel) 2022; 15:632. [PMID: 35631457 PMCID: PMC9146377 DOI: 10.3390/ph15050632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/08/2022] [Accepted: 05/12/2022] [Indexed: 11/17/2022] Open
Abstract
In today’s global plan to completely eradicate hepatitis C virus (HCV), the essential list of medications used for HCV treatment are direct-acting antivirals (DAAs), as interferon-sparing regimens have become the standard-of-care (SOC) treatment. HCV nonstructural protein 5A (NS5A) inhibitors are a very common component of these regimens. Food and Drug Administration (FDA)-approved NS5A inhibitors, although very potent, do not have the same potency against all eight genotypes of HCV. Therefore, this study aims to synthesize NS5A inhibitor analogues with high potency pan-genotypic activity and high metabolic stability. Starting from an NS5A inhibitor scaffold previously identified by our research group, we made several modifications. Two series of compounds were created to test the effect of changing the length and spatial conformation (para-para vs. meta-meta-positioned bis-imidazole-proline-carbamate), replacing amide groups in the linker with imidazole groups, as well as different end-cap compositions and sizes. The frontrunner inhibits genotype 1b (Con1) replicon, with an EC50 value in the picomolar range, and showed high genotypic coverage with nanomolar range EC50 values against four more genotypes. This together with its high metabolic stability (t½ > 120 min) makes it a potential preclinical candidate.
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Affiliation(s)
- Jehad Hamdy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt; (J.H.); (N.E.)
| | - Nouran Emadeldin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt; (J.H.); (N.E.)
| | - Mostafa M. Hamed
- Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)—Helmholtz Centre for Infection Research (HZI), Campus E8.1, 66123 Saarbrücken, Germany; (M.M.H.); (A.K.H.H.)
| | - Efseveia Frakolaki
- Molecular Virology Laboratory, Department of Microbiology, Hellenic Pasteur Institute, Vas. Sofias Avenue, 11521 Athens, Greece; (E.F.); (N.V.)
| | - Sotirios Katsamakas
- Division of Pharmaceutical Chemistry, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece;
| | - Niki Vassilaki
- Molecular Virology Laboratory, Department of Microbiology, Hellenic Pasteur Institute, Vas. Sofias Avenue, 11521 Athens, Greece; (E.F.); (N.V.)
| | - Grigoris Zoidis
- Division of Pharmaceutical Chemistry, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece;
| | - Anna K. H. Hirsch
- Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)—Helmholtz Centre for Infection Research (HZI), Campus E8.1, 66123 Saarbrücken, Germany; (M.M.H.); (A.K.H.H.)
- Department of Pharmacy, Saarland University, Campus E8.1, 66123 Saarbrücken, Germany
| | - Mohammad Abdel-Halim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt; (J.H.); (N.E.)
| | - Ashraf H. Abadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt; (J.H.); (N.E.)
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3
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Abdallah M, Hamed MM, Frakolaki E, Katsamakas S, Vassilaki N, Bartenschlager R, Zoidis G, Hirsch AKH, Abdel-Halim M, Abadi AH. Redesigning of the cap conformation and symmetry of the diphenylethyne core to yield highly potent pan-genotypic NS5A inhibitors with high potency and high resistance barrier. Eur J Med Chem 2021; 229:114034. [PMID: 34959173 DOI: 10.1016/j.ejmech.2021.114034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 11/15/2022]
Abstract
Herein, we report the discovery of several NS5A inhibitors with potency against HCV genotype 1b in the picomolar range. Compounds (15, 33) were of extremely high potency against HCV genotype 1b (EC50 ≈ 1 pM), improved activity against genotype 3a (GT 3a) and good metabolic stability. We studied the impact of changing the cap conformation relative to the diphenylethyne core and/or compound symmetry on both potency and metabolic stability. The analogs obtained exhibited improved potency against HCV genotypes 1a, 1b, 3a and 4a compared to the clinically approved candidate daclatasvir with EC50 values in the low picomolar range and SI50s > 7 orders of magnitude. Compound 15, a symmetrically m-, m'-substituted diphenyl ethyne analog, was 150-fold more potent than daclatasvir against GT 3a, while compound 33, an asymmetrically m-, p-substituted diphenyl ethyne analog, was 35-fold more potent than daclatasvir against GT 3a. In addition, compound 15 exhibited a higher resistance barrier than daclatasvir against genotype 1b.
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Affiliation(s)
- Mennatallah Abdallah
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt
| | - Mostafa M Hamed
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus E8.1, 66123, Saarbrücken, Germany
| | - Efseveia Frakolaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, Vas. Sofias Avenue, 11521, Athens, Greece
| | - Sotirios Katsamakas
- School of Health Sciences, Department of Pharmacy, Division of Pharmaceutical Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, GR-15771, Athens, Greece
| | - Niki Vassilaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, Vas. Sofias Avenue, 11521, Athens, Greece
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany; German Center for Infection Research, Heidelberg Partner Site, Germany
| | - Grigoris Zoidis
- School of Health Sciences, Department of Pharmacy, Division of Pharmaceutical Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, GR-15771, Athens, Greece.
| | - Anna K H Hirsch
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus E8.1, 66123, Saarbrücken, Germany; Department of Pharmacy, Saarland University, Campus E8.1, Saarbrücken, 66123, Germany
| | - Mohammad Abdel-Halim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt.
| | - Ashraf H Abadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt.
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Seidel P, Seichter W, Schwarzer A, Mazik M. Fluorene Derivatives Bearing Two to Seven Phthalimidomethyl Groups: Syntheses, Crystal Structures and Conversion to Amines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Pierre Seidel
- Institut für Organische Chemie Technische Universität Bergakademie Freiberg Leipziger Strasse 29 09599 Freiberg Germany
| | - Wilhelm Seichter
- Institut für Organische Chemie Technische Universität Bergakademie Freiberg Leipziger Strasse 29 09599 Freiberg Germany
| | - Anke Schwarzer
- Institut für Organische Chemie Technische Universität Bergakademie Freiberg Leipziger Strasse 29 09599 Freiberg Germany
| | - Monika Mazik
- Institut für Organische Chemie Technische Universität Bergakademie Freiberg Leipziger Strasse 29 09599 Freiberg Germany
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Mousa MHA, Ahmed NS, Schwedtmann K, Frakolaki E, Vassilaki N, Zoidis G, Weigand JJ, Abadi AH. Design and Synthesis of Novel Symmetric Fluorene-2,7-Diamine Derivatives as Potent Hepatitis C Virus Inhibitors. Pharmaceuticals (Basel) 2021; 14:ph14040292. [PMID: 33806139 PMCID: PMC8064491 DOI: 10.3390/ph14040292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/14/2021] [Accepted: 03/16/2021] [Indexed: 12/24/2022] Open
Abstract
Hepatitis C virus (HCV) is an international challenge. Since the discovery of NS5A direct-acting antivirals, researchers turned their attention to pursue novel NS5A inhibitors with optimized design and structure. Herein we explore highly potent hepatitis C virus (HCV) NS5A inhibitors; the novel analogs share a common symmetrical prolinamide 2,7-diaminofluorene scaffold. Modification of the 2,7-diaminofluorene backbone included the use of (S)-prolinamide or its isostere (S,R)-piperidine-3-caboxamide, both bearing different amino acid residues with terminal carbamate groups. Compound 26 exhibited potent inhibitory activity against HCV genotype (GT) 1b (effective concentration (EC50) = 36 pM and a selectivity index of >2.78 × 106). Compound 26 showed high selectivity on GT 1b versus GT 4a. Interestingly, it showed a significant antiviral effect against GT 3a (EC50 = 1.2 nM). The structure-activity relationship (SAR) analysis revealed that picomolar inhibitory activity was attained with the use of S-prolinamide capped with R- isoleucine or R-phenylglycine residues bearing a terminal alkyl carbamate group.
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Affiliation(s)
- Mai H. A. Mousa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt;
| | - Nermin S. Ahmed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt;
- Correspondence: (N.S.A.); (A.H.A.); Tel.: +202-27590700 (ext. 3429) (N.S.A.); +202-27590700 (ext. 3400) (A.H.A.); Fax: +202-27581041 (N.S.A. & A.H.A.)
| | - Kai Schwedtmann
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany; (K.S.); (J.J.W.)
| | - Efseveia Frakolaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, 11521 Athens, Greece; (E.F.); (N.V.)
| | - Niki Vassilaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, 11521 Athens, Greece; (E.F.); (N.V.)
| | - Grigoris Zoidis
- Department of Pharmacy, Division of Pharmaceutical Chemistry, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece;
| | - Jan J. Weigand
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany; (K.S.); (J.J.W.)
| | - Ashraf H. Abadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt;
- Correspondence: (N.S.A.); (A.H.A.); Tel.: +202-27590700 (ext. 3429) (N.S.A.); +202-27590700 (ext. 3400) (A.H.A.); Fax: +202-27581041 (N.S.A. & A.H.A.)
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Lashin WH, Nassar IF, El Farargy AF, Abdelhamid AO. Synthesis of New Furanone Derivatives with Potent Anticancer Activity. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1068162020060163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Seidel P, Mazik M. Syntheses of Acyclic and Macrocyclic Compounds Derived from 9,9-Diethylfluorene (Part I). ChemistryOpen 2020; 9:1202-1213. [PMID: 33304735 PMCID: PMC7689417 DOI: 10.1002/open.202000268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/17/2020] [Indexed: 01/12/2023] Open
Abstract
A series of new 9,9-diethylfluorenes consisting of three side-arms each bearing a heterocyclic, bis(carboxymethyl)amino, bis(carbamoylmethyl)amino, bis(ethoxycarbonylmethyl)amino or an amino group were prepared on the basis of 2,4,7-tris(bromomethyl)-9,9-diethylfluorene. Imidazolyl, benzimidazolyl, pyrazolyl, pyrrolyl, 1,3-dioxoisoindolyl and pyridinium groups were taken into account as heterocyclic units, attached to the aromatic skeleton via -CH2-, -CH2NHCH2- or -CH2N=CH- linkers. In addition to the seventeen 2,4,7-trisubstituted 9,9-diethylfluorenes, two macrocyclic compounds were prepared on the basis of 2,7-bis(aminomethyl)-9,9-diethylfluorene. The excellent yield of the macrocyclization reaction is worth a special mention. Both the acyclic and the macrocyclic fluorene-based compounds have, among other things, the potential to act as artificial receptors for different substrates in analogy to the known receptors consisting of a benzene or biphenyl core.
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Affiliation(s)
- Pierre Seidel
- Institut für Organische ChemieTechnische Universität Bergakademie FreibergLeipziger Strasse 2909599FreibergGermany
| | - Monika Mazik
- Institut für Organische ChemieTechnische Universität Bergakademie FreibergLeipziger Strasse 2909599FreibergGermany
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Structure-activity relationships of fluorene compounds inhibiting HCV variants. Antiviral Res 2019; 174:104678. [PMID: 31862501 DOI: 10.1016/j.antiviral.2019.104678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/04/2019] [Accepted: 12/09/2019] [Indexed: 02/07/2023]
Abstract
Approximately 71 million people suffer from hepatitis C virus (HCV) infection worldwide. Persistent HCV infection causes liver diseases such as chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma, resulting in approximately 400,000 deaths annually. Effective direct-acting antiviral agents (DAAs) have been developed and are currently used for HCV treatment targeting the following three proteins: NS3/4A proteinase that cleaves the HCV polyprotein into various functional proteins, RNA-dependent RNA polymerase (designated as NS5B), and NS5A, which is required for the formation of double membrane vesicles serving as RNA replication organelles. At least one compound inhibiting NS5A is included in current HCV treatment regimens due to the high efficacy and low toxicity of drugs targeting NS5A. Here we report fluorene compounds showing strong inhibitory effects on GT 1b and 3a of HCV. Moreover, some compounds were effective against resistance-associated variants to DAAs. The structure-activity relationships of the compounds were analyzed. Furthermore, we investigated the molecular bases of the inhibitory activities of some compounds by the molecular docking method.
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Lee JS, Tabata K, Twu WI, Rahman MS, Kim HS, Yu JB, Jee MH, Bartenschlager R, Jang SK. RACK1 mediates rewiring of intracellular networks induced by hepatitis C virus infection. PLoS Pathog 2019; 15:e1008021. [PMID: 31525236 PMCID: PMC6762199 DOI: 10.1371/journal.ppat.1008021] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/26/2019] [Accepted: 08/05/2019] [Indexed: 12/12/2022] Open
Abstract
Hepatitis C virus (HCV) is a positive-strand RNA virus replicating in a membranous replication organelle composed primarily of double-membrane vesicles (DMVs) having morphological resemblance to autophagosomes. To define the mechanism of DMV formation and the possible link to autophagy, we conducted a yeast two-hybrid screening revealing 32 cellular proteins potentially interacting with HCV proteins. Among these was the Receptor for Activated Protein C Kinase 1 (RACK1), a scaffolding protein involved in many cellular processes, including autophagy. Depletion of RACK1 strongly inhibits HCV RNA replication without affecting HCV internal ribosome entry site (IRES) activity. RACK1 is required for the rewiring of subcellular membranous structures and for the induction of autophagy. RACK1 binds to HCV nonstructural protein 5A (NS5A), which induces DMV formation. NS5A interacts with ATG14L in a RACK1 dependent manner, and with the ATG14L-Beclin1-Vps34-Vps15 complex that is required for autophagosome formation. Both RACK1 and ATG14L are required for HCV DMV formation and viral RNA replication. These results indicate that NS5A participates in the formation of the HCV replication organelle through interactions with RACK1 and ATG14L. All positive-strand RNA viruses replicate their genomes in distinct membrane-associated compartments designated replication organelles. The compartmentalization of viral replication machinery allows the enrichment and coordination of cellular and viral factors required for RNA replication and the evasion from innate host defense systems. Hepatitis C virus (HCV), a prototype member of the Flaviviridae family, rearranges intracellular membranes to construct replication organelles composed primarily of double-membrane vesicles (DMVs) which are morphologically similar to autophagosomes. Nonstructural protein 5A (NS5A), which is essential for HCV replication, induces DMV formation. Here, we report that NS5A triggers DMV formation through interactions with RACK1 and components of the vesicle nucleation complex acting at the early stage of autophagy. These results illustrate how a virus skews cellular machineries to utilize them for its replication by hijacking cellular proteins through protein-protein interactions. This research sheds light on the molecular basis of replication organelle formation by HCV and possibly other viruses employing organelles with DMV morphology.
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Affiliation(s)
- Jae Seung Lee
- Division of Integrative Bioscience & Biotechnology, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
| | - Keisuke Tabata
- Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany
| | - Woan-Ing Twu
- Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany
| | - Md Shafiqur Rahman
- Department of Life Sciences, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
| | - Hee Sun Kim
- Division of Integrative Bioscience & Biotechnology, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
| | - Jin Bae Yu
- Department of Life Sciences, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
| | - Min Hyeok Jee
- Department of Life Sciences, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center, Heidelberg, Germany
| | - Sung Key Jang
- Division of Integrative Bioscience & Biotechnology, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
- Department of Life Sciences, POSTECH Biotech Center, POSTECH, Nam-gu, Pohang-si, Gyeongsangbuk-do, Rep. of KOREA
- * E-mail:
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Seidel P, Schwarzer A, Mazik M. Fluorene Derivatives Bearing Halogenomethyl Groups: Synthesis, Molecular Structures, and Halogen/Hydrogen Bonding Patterns in the Crystalline State. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Pierre Seidel
- Institut für Organische Chemie; Technische Universität Bergakademie Freiberg; Leipziger Strasse 29 09599 Freiberg Germany
| | - Anke Schwarzer
- Institut für Organische Chemie; Technische Universität Bergakademie Freiberg; Leipziger Strasse 29 09599 Freiberg Germany
| | - Monika Mazik
- Institut für Organische Chemie; Technische Universität Bergakademie Freiberg; Leipziger Strasse 29 09599 Freiberg Germany
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You Y, Kim HS, Park JW, Keum G, Jang SK, Kim BM. Sulfur(vi) fluoride exchange as a key reaction for synthesizing biaryl sulfate core derivatives as potent hepatitis C virus NS5A inhibitors and their structure-activity relationship studies. RSC Adv 2018; 8:31803-31821. [PMID: 35548241 PMCID: PMC9085918 DOI: 10.1039/c8ra05471a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/28/2018] [Indexed: 12/25/2022] Open
Abstract
Extremely potent, new hepatitis C virus (HCV) nonstructural 5A (NS5A) featuring substituted biaryl sulfate core structures was designed and synthesized. Based on the previously reported novel HCV NS5A inhibitors featuring biaryl sulfate core structures which exhibit two-digit picomolar half-maximal effective concentration (EC50) values against HCV genotype 1b and 2a, the new inhibitors equipped with the sulfate core structures containing diversely substituted aryl groups were explored. In this study, highly efficient, chemoselective coupling reactions between an arylsulfonyl fluoride and an aryl silyl ether, known as the sulfur(vi) fluoride exchange (SuFEx) reaction, were utilized. Among the inhibitors prepared based on the SuFEx chemistry, compounds 14, 15 and 29 exhibited two-digit picomolar EC50 values against GT-1b and single digit or sub nanomolar activities against the HCV GT-2a strain. Nonsymmetrical inhibitors containing an imidazole and amide moieties on each side of the sulfate core structures were also synthesized. In addition, a biotinylated probe targeting NS5A protein was prepared for labeling using the same synthetic methodology.
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Affiliation(s)
- Youngsu You
- Department of Chemistry, College of Natural Sciences, Seoul National University Seoul 08826 South Korea
| | - Hee Sun Kim
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology Pohang 37673 South Korea
| | - Jung Woo Park
- Supercomputing Modeling & Simulation Center, Division of Data Analysis, Korea Institute of Science and Technology Information (KISTI) 245 Daehak-ro, Yuseong-gu Daejeon 34141 South Korea
| | - Gyochang Keum
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST) Hwarangno 14-gil 5, Seongbuk-gu Seoul 02455 South Korea
| | - Sung Key Jang
- Department of Life Sciences, Pohang University of Science and Technology Pohang 37673 South Korea
| | - B Moon Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University Seoul 08826 South Korea
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Wu YC, Cao L, Mei WJ, Wu HQ, Luo SH, Zhan HY, Wang ZY. Bis-2(5H)-furanone derivatives as new anticancer agents: Design, synthesis, biological evaluation, and mechanism studies. Chem Biol Drug Des 2018; 92:1232-1240. [DOI: 10.1111/cbdd.13183] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/03/2018] [Accepted: 02/10/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Yan-Cheng Wu
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou China
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan China
| | - Liang Cao
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou China
| | - Wen-Jie Mei
- School of Pharmacy; Guangdong Pharmaceutical University; Guangzhou China
| | - Han-Qing Wu
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou China
| | - Shi-He Luo
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou China
| | - Hai-Ying Zhan
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan China
| | - Zhao-Yang Wang
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou China
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Wu YC, Luo SH, Mei WJ, Cao L, Wu HQ, Wang ZY. Synthesis and biological evaluation of 4-biphenylamino-5-halo-2( 5H )-furanones as potential anticancer agents. Eur J Med Chem 2017; 139:84-94. [DOI: 10.1016/j.ejmech.2017.08.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/15/2017] [Accepted: 08/02/2017] [Indexed: 10/19/2022]
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14
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You Y, Kim HS, Bae IH, Lee SG, Jee MH, Keum G, Jang SK, Kim BM. New potent biaryl sulfate-based hepatitis C virus inhibitors. Eur J Med Chem 2016; 125:87-100. [PMID: 27657807 DOI: 10.1016/j.ejmech.2016.09.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 09/08/2016] [Accepted: 09/09/2016] [Indexed: 10/21/2022]
Abstract
The discovery of a new series of potent hepatitis C virus (HCV) NS5A inhibitors containing biaryl sulfone or sulfate cores is reported. Structure-activity relationship (SAR) studies on inhibitors containing various substitution patterns of the sulfate or sulfone core structure established that m-,m'- substituted biaryl sulfate core-based inhibitors containing an amide moiety (compound 20) or an imidazole moiety (compound 24) showed extremely high potency. Compound 20 demonstrated double-digit pM potencies against both genotype 1b (GT-1b) and 2a (GT-2a). Compound 24 also exhibited double-digit pM potencies against GT-1b and sub nM potencies against GT-2a. Furthermore, compounds 20 and 24 exhibited no cardiotoxicity in an hERG ligand binding assay and showed acceptable plasma stability and no mutagenic potential in the Ames test. In addition, these compounds showed distinctive additive effects in combination treatment with the NS5B targeting drug sofosbuvir (Sovaldi®). The results of this study showed that the compounds 20 and 24 could be effective HCV inhibitors.
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Affiliation(s)
- Youngsu You
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, South Korea
| | - Hee Sun Kim
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - Il Hak Bae
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, South Korea
| | - Seung Gi Lee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - Min Hyeok Jee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang 790-784, South Korea
| | - Gyochang Keum
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, South Korea
| | - Sung Key Jang
- Department of Life Sciences, Pohang University of Science and Technology, Pohang 790-784, South Korea.
| | - B Moon Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, South Korea.
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