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Freitas de Lima Hercos G, Gabriela Faleiro de Moura Lodi Cruz M, Clara Cassiano Martinho A, de Melo Resende D, Farago Nascimento D, Derksen Macruz P, Jorge Pilau E, Maria Fonseca Murta S, de Oliveira Rezende Júnior C. Optimization of benzenesulfonyl derivatives as anti-Trypanosomatidae agents: Structural design, synthesis, and pharmacological assessment against Trypanosoma cruzi and Leishmania infantum. Bioorg Med Chem 2024; 105:117736. [PMID: 38677111 DOI: 10.1016/j.bmc.2024.117736] [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: 01/16/2024] [Revised: 03/29/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
Leishmaniasis and Chagas disease are neglected tropical diseases caused by Trypanosomatidae parasites. Given the numerous limitations associated with current treatments, such as extended treatment duration, variable efficacy, and severe side effects, there is an urgent imperative to explore novel therapeutic options. This study details the early stages of hit-to-lead optimization for a benzenesulfonyl derivative, denoted as initial hit, against Trypanossoma cruzi (T. cruzi), Leishmania infantum (L. infantum) and Leishmania braziliensis (L. braziliensis). We investigated structure - activity relationships using a series of 26 newly designed derivatives, ultimately yielding potential lead candidates with potent low-micromolar and sub-micromolar activities against T. cruzi and Leishmania spp, respectively, and low in vitro cytotoxicity against mammalian cells. These discoveries emphasize the significant promise of this chemical class in the fight against Chagas disease and leishmaniasis.
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Affiliation(s)
- Guilherme Freitas de Lima Hercos
- Laboratório de Síntese de Candidatos a Fármacos (LaSFar), Instituto de Química, Universidade Federal de Uberlândia (UFU), Uberlândia, MG 38400-902, Brazil
| | | | - Ana Clara Cassiano Martinho
- Laboratório de Síntese de Candidatos a Fármacos (LaSFar), Instituto de Química, Universidade Federal de Uberlândia (UFU), Uberlândia, MG 38400-902, Brazil
| | - Daniela de Melo Resende
- Grupo de Genômica Funcional de Parasitos, Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ Minas), Belo Horizonte, MG 30190-002, Brazil
| | - Danilo Farago Nascimento
- Laboratório de Síntese de Candidatos a Fármacos (LaSFar), Instituto de Química, Universidade Federal de Uberlândia (UFU), Uberlândia, MG 38400-902, Brazil
| | - Paula Derksen Macruz
- Laboratório de Biomoléculas e Espectrometria de Massas (LaBioMass), Universidade Estadual de Maringá (UEM), Maringá, PR 807020-900, Brazil
| | - Eduardo Jorge Pilau
- Laboratório de Biomoléculas e Espectrometria de Massas (LaBioMass), Universidade Estadual de Maringá (UEM), Maringá, PR 807020-900, Brazil
| | - Silvane Maria Fonseca Murta
- Grupo de Genômica Funcional de Parasitos, Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ Minas), Belo Horizonte, MG 30190-002, Brazil
| | - Celso de Oliveira Rezende Júnior
- Laboratório de Síntese de Candidatos a Fármacos (LaSFar), Instituto de Química, Universidade Federal de Uberlândia (UFU), Uberlândia, MG 38400-902, Brazil.
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Swami B, Kumari N, Maruthi M, Kunjunny NK, Menon RS. A formal vinylic substitution reaction for the synthesis of α,β-unsaturated enol esters and their anticancer potential. Org Biomol Chem 2024; 22:3273-3278. [PMID: 38572769 DOI: 10.1039/d4ob00401a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Arylsulfonyl group-bearing α,β-unsaturated enol esters were readily assembled via the Cs2CO3-mediated union of 2-bromoallyl sulfones and cinnamic acids. The overall transformation is equivalent to an sp2 carbon-oxygen coupling reaction, and therefore constitutes a formal vinylic substitution. Several of the products display promising levels of antiproliferative activities higher than that of the anticancer drug carboplatin. Thiophenol reacted with 2-bromoallyl sulfones under identical conditions to afford α-thiophenyl-α'-tosyl acetone via an apparent aerial oxidation.
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Affiliation(s)
- Bhawna Swami
- Department of Chemistry, Central University of Haryana, Mahendergarh, Haryana 123 031, India
| | - Neetu Kumari
- Department of Biochemistry, Central University of Haryana, Mahendergarh, Haryana 123 031, India
| | - Mulaka Maruthi
- Department of Biochemistry, Central University of Haryana, Mahendergarh, Haryana 123 031, India
| | - Neethu K Kunjunny
- Department of Chemistry, University of Calicut, Malappuram, Kerala 673 635, India.
| | - Rajeev S Menon
- Department of Chemistry, University of Calicut, Malappuram, Kerala 673 635, India.
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Eldeeb AH, Abo-Ashour MF, Angeli A, Bonardi A, Lasheen DS, Elrazaz EZ, Nocentini A, Gratteri P, Abdel-Aziz HA, Supuran CT. Novel benzenesulfonamides aryl and arylsulfone conjugates adopting tail/dual tail approaches: Synthesis, carbonic anhydrase inhibitory activity and molecular modeling studies. Eur J Med Chem 2021; 221:113486. [PMID: 33965860 DOI: 10.1016/j.ejmech.2021.113486] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 03/15/2021] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 10/21/2022]
Abstract
New series of benzenesulfonamide and benzoic acid derivatives were designed and synthesized using tail/dual tail approach to improve potency and selectivity as carbonic anhydrase inhibitors. The synthesized compounds evaluated as CAIs against isoforms hCA I, II, IV and IX with acetazolamide (AAZ) as standard inhibitor. The benzenesulfonamide derivatives 7a-d, 8a-h, 12a-c, 13a and 15a-c showed moderate to potent inhibitory activity with selectivity toward isoform hCA II, especially, compound 13a with (Ki = 7.6 nM), while the benzoic acid analogues 12d-f, 13b and 15d-f didn't show any activity except compounds 12d,f and 15e that showed weak activity. Additionally, molecular docking was performed for compounds 7a, 8a, 8e, 12a, 13a and 15a on isoform hCA I, II to illustrate the possible interaction with the active site to justify the inhibitory activity.
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Affiliation(s)
- Assem H Eldeeb
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo, 11829, Egypt
| | - Mahmoud F Abo-Ashour
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo, 11829, Egypt.
| | - Andrea Angeli
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy
| | - Alessandro Bonardi
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy; Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy
| | - Deena S Lasheen
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, P.O. Box 11566, Abbassia, Cairo, Egypt
| | - Eman Z Elrazaz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, P.O. Box 11566, Abbassia, Cairo, Egypt
| | - Alessio Nocentini
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy; Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy
| | - Paola Gratteri
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy
| | - Hatem A Abdel-Aziz
- Department of Applied Organic Chemistry, National Research Center, Dokki, Cairo, 12622, Egypt
| | - Claudiu T Supuran
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019, Sesto Fiorentino, Firenze, Italy.
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4
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Narjes F, Llinas A, von Berg S, Jirholt J, Lever S, Pehrson R, Collins M, Malmberg A, Svanberg P, Xue Y, Olsson RI, Malmberg J, Hughes G, Hossain N, Grindebacke H, Leffler A, Krutrök N, Bäck E, Ramnegård M, Lepistö M, Thunberg L, Aagaard A, McPheat J, Hansson EL, Chen R, Xiong Y, Hansson TG. AZD0284, a Potent, Selective, and Orally Bioavailable Inverse Agonist of Retinoic Acid Receptor-Related Orphan Receptor C2. J Med Chem 2021; 64:13807-13829. [PMID: 34464130 DOI: 10.1021/acs.jmedchem.1c01197] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Inverse agonists of the nuclear receptor RORC2 have been widely pursued as a potential treatment for a variety of autoimmune diseases. We have discovered a novel series of isoindoline-based inverse agonists of the nuclear receptor RORC2, derived from our recently disclosed RORC2 inverse agonist 2. Extensive structure-activity relationship (SAR) studies resulted in AZD0284 (20), which combined potent inhibition of IL-17A secretion from primary human TH17 cells with excellent metabolic stability and good PK in preclinical species. In two preclinical in vivo studies, compound 20 reduced thymocyte numbers in mice and showed dose-dependent reduction of IL-17A containing γδ-T cells and of IL-17A and IL-22 RNA in the imiquimod induced inflammation model. Based on these data and a favorable safety profile, 20 was progressed to phase 1 clinical studies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yafeng Xue
- Mechanistic & Structural Biology, Discovery Science, R&D, AstraZeneca, Gothenburg SE-431 83, Sweden
| | | | | | | | | | | | | | | | | | | | | | - Linda Thunberg
- Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca, Gothenburg SE-431 83, Sweden
| | - Anna Aagaard
- Mechanistic & Structural Biology, Discovery Science, R&D, AstraZeneca, Gothenburg SE-431 83, Sweden
| | - Jane McPheat
- Mechanistic & Structural Biology, Discovery Science, R&D, AstraZeneca, Gothenburg SE-431 83, Sweden
| | - Eva L Hansson
- Mechanistic & Structural Biology, Discovery Science, R&D, AstraZeneca, Gothenburg SE-431 83, Sweden
| | - Rongfeng Chen
- Pharmaron Beijing Co., Ltd., Taihe Road BDA, Beijing 100176, P. R. China
| | - Yao Xiong
- Pharmaron Beijing Co., Ltd., Taihe Road BDA, Beijing 100176, P. R. China
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Yu L, Chi J, Xiao L, Li J, Tang Z, Tan S, Li P. Novel Thiochromanone Derivatives Containing a Sulfonyl Hydrazone Moiety: Design, Synthesis, and Bioactivity Evaluation. Molecules 2021; 26:molecules26102925. [PMID: 34069070 PMCID: PMC8156870 DOI: 10.3390/molecules26102925] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 02/07/2023] Open
Abstract
A series of novel thiochromanone derivatives containing a sulfonyl hydrazone moiety were designed and synthesized. Their structures were determined by 1H-NMR, 13C-NMR, and HRMS. Bioassay results showed that most of the target compounds revealed moderate to good antibacterial activities against Xanthomonas oryzae pv. oryzae, Xanthomonas oryzae pv. oryzicolaby, and Xanthomonas axonopodis pv. citri. Compound 4i had the best inhibitory activity against Xanthomonas oryzae pv. oryzae, Xanthomonas oryzae pv. oryzicolaby, and Xanthomonas axonopodis pv. citri, with the EC50 values of 8.67, 12.65, and 10.62 μg/mL, which were superior to those of Bismerthiazol and Thiodiazole-copper. Meanwhile, bioassay results showed that all of the target compounds proved to have lower antifungal activities against Sclerotinia sclerotiorum, Fusarium oxysporum, Gibberella zeae, Rhizoctonia solani, Verticillium dahlia, and Botrytis cinerea than those of Carbendazim.
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Affiliation(s)
- Lu Yu
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
| | - Jiyan Chi
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
| | - Lingling Xiao
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
| | - Jie Li
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
| | - Zhangfei Tang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
| | - Shuming Tan
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
- Correspondence: (S.T.); or (P.L.); Tel.: +86-(0851)8559466 (S.T. & P.L.)
| | - Pei Li
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.Y.); (J.C.); (L.X.); (J.L.); (Z.T.)
- Qiandongnan Engineering and Technology Research Center for Comprehensive Utilization of National Medicine, Kaili University, Kaili 556011, China
- Correspondence: (S.T.); or (P.L.); Tel.: +86-(0851)8559466 (S.T. & P.L.)
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Gao P, Song S, Frutos-Beltrán E, Li W, Sun B, Kang D, Zou J, Zhang J, Pannecouque C, De Clercq E, Menéndez-Arias L, Zhan P, Liu X. Novel indolylarylsulfone derivatives as covalent HIV-1 reverse transcriptase inhibitors specifically targeting the drug-resistant mutant Y181C. Bioorg Med Chem 2021; 30:115927. [PMID: 33352387 DOI: 10.1016/j.bmc.2020.115927] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 04/25/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 11/19/2022]
Abstract
Non-nucleoside reverse transcriptase inhibitors (NNRTIs) are widely used in combination therapies against HIV-1. However, emergent and transmitted drug resistance compromise their efficacy in the clinical setting. Y181C is selected in patients receiving nevirapine, etravirine and rilpivirine, and together with K103N is the most prevalent NNRTI-associated mutation in HIV-infected patients. Herein, we report on the design, synthesis and biological evaluation of a novel series of indolylarylsulfones bearing acrylamide or ethylene sulfonamide reactive groups as warheads to inactivate Cys181-containing HIV-1 RT via a Michael addition reaction. Compounds I-7 and I-9 demonstrated higher selectivity towards the Y181C mutant than against the wild-type RT, in nucleotide incorporation inhibition assays. The larger size of the NNRTI binding pocket in the mutant enzyme facilitates a better fit for the active compounds, while stacking interactions with Phe227 and Pro236 contribute to inhibitor binding. Mass spectrometry data were consistent with the covalent modification of the RT, although off-target reactivity constitutes a major limitation for further development of the described inhibitors.
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Affiliation(s)
- Ping Gao
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China
| | - Shu Song
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China
| | - Estrella Frutos-Beltrán
- Centro de Biología Molecular "Severo Ochoa" (Consejo Superior de Investigaciones Científicas & Universidad Autónoma de Madrid), Madrid, Spain
| | - Wenxin Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China
| | - Bin Sun
- Institute of BioPharmaceutical Research, Liaocheng University, 1 Hunan Road, Liaocheng 252000, PR China
| | - Dongwei Kang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China
| | - Jinmi Zou
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China
| | - Jian Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China
| | - Christophe Pannecouque
- Rega Institute for Medical Research, K. U. Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Erik De Clercq
- Rega Institute for Medical Research, K. U. Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Luis Menéndez-Arias
- Centro de Biología Molecular "Severo Ochoa" (Consejo Superior de Investigaciones Científicas & Universidad Autónoma de Madrid), Madrid, Spain.
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China.
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Ji'nan 250012, PR China.
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Fuchs N, Meta M, Schuppan D, Nuhn L, Schirmeister T. Novel Opportunities for Cathepsin S Inhibitors in Cancer Immunotherapy by Nanocarrier-Mediated Delivery. Cells 2020; 9:E2021. [PMID: 32887380 PMCID: PMC7565055 DOI: 10.3390/cells9092021] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 12/16/2022] Open
Abstract
Cathepsin S (CatS) is a secreted cysteine protease that cleaves certain extracellular matrix proteins, regulates antigen presentation in antigen-presenting cells (APC), and promotes M2-type macrophage and dendritic cell polarization. CatS is overexpressed in many solid cancers, and overall, it appears to promote an immune-suppressive and tumor-promoting microenvironment. While most data suggest that CatS inhibition or knockdown promotes anti-cancer immunity, cell-specific inhibition, especially in myeloid cells, appears to be important for therapeutic efficacy. This makes the design of CatS selective inhibitors and their targeting to tumor-associated M2-type macrophages (TAM) and DC an attractive therapeutic strategy compared to the use of non-selective immunosuppressive compounds or untargeted approaches. The selective inhibition of CatS can be achieved through optimized small molecule inhibitors that show good pharmacokinetic profiles and are orally bioavailable. The targeting of these inhibitors to TAM is now more feasible using nanocarriers that are functionalized for a directed delivery. This review discusses the role of CatS in the immunological tumor microenvironment and upcoming possibilities for a nanocarrier-mediated delivery of potent and selective CatS inhibitors to TAM and related APC to promote anti-tumor immunity.
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Affiliation(s)
- Natalie Fuchs
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University of Mainz, Staudingerweg 5, D, 55128 Mainz, Germany; (N.F.); (M.M.)
| | - Mergim Meta
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University of Mainz, Staudingerweg 5, D, 55128 Mainz, Germany; (N.F.); (M.M.)
| | - Detlef Schuppan
- Institute of Translational Immunology and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Obere Zahlbacher Str. 63, 55131 Mainz, Germany
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215, USA
| | - Lutz Nuhn
- Max Planck Institute for Polymer Research Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Schirmeister
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University of Mainz, Staudingerweg 5, D, 55128 Mainz, Germany; (N.F.); (M.M.)
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Carlström KE, Chinthakindi PK, Espinosa B, Al Nimer F, Arnér ESJ, Arvidsson PI, Piehl F, Johansson K. Characterization of More Selective Central Nervous System Nrf2-Activating Novel Vinyl Sulfoximine Compounds Compared to Dimethyl Fumarate. Neurotherapeutics 2020; 17:1142-1152. [PMID: 32394330 PMCID: PMC7609514 DOI: 10.1007/s13311-020-00855-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The Nrf2 transcription factor is a key regulator of redox reactions and considered the main target for the multiple sclerosis (MS) drug dimethyl fumarate (DMF). However, exploration of additional Nrf2-activating compounds is motivated, since DMF displays significant off-target effects and has a relatively poor penetrance to the central nervous system (CNS). We de novo synthesized eight vinyl sulfone and sulfoximine compounds (CH-1-CH-8) and evaluated their capacity to activate the transcription factors Nrf2, NFκB, and HIF1 in comparison with DMF using the pTRAF platform. The novel sulfoximine CH-3 was the most promising candidate and selected for further comparison in vivo and later an experimental model for traumatic brain injury (TBI). CH-3 and DMF displayed comparable capacity to activate Nrf2 and downstream transcripts in vitro, but with less off-target effects on HIF1 from CH-3. This was verified in cultured microglia and oligodendrocytes (OLs) and subsequently in vivo in rats. Following TBI, DMF lowered the number of leukocytes in blood and also decreased axonal degeneration. CH-3 preserved or increased the number of pre-myelinating OL. While both CH-3 and DMF activated Nrf2, CH-3 showed less off-target effects and displayed more selective OL associated effects. Further studies with Nrf2-acting compounds are promising candidates to explore potential myelin protective or regenerative effects in demyelinating disorders.
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Affiliation(s)
- Karl E Carlström
- Department of Clinical Neurosciences, Section of Neurology, Karolinska Institutet, 17177, Stockholm, Sweden.
| | - Praveen K Chinthakindi
- Catalysis and Peptide Research Unit, University of KwaZulu Natal, Durban, 4000, South Africa
- Department of Medicinal Chemistry, Drug Design and Discovery, Uppsala University, Box 574, 75123, Uppsala, Sweden
| | - Belén Espinosa
- Department of Medical Biochemistry and Biophysics, Division of Biochemistry, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Faiez Al Nimer
- Department of Clinical Neurosciences, Section of Neurology, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Elias S J Arnér
- Department of Medical Biochemistry and Biophysics, Division of Biochemistry, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal, Durban, 4000, South Africa
- Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology, Karolinska Institutet, 171 21, Solna, Sweden
| | - Fredrik Piehl
- Department of Clinical Neurosciences, Section of Neurology, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Katarina Johansson
- Department of Medical Biochemistry and Biophysics, Division of Biochemistry, Karolinska Institutet, 17177, Stockholm, Sweden
- Pfizer Innovation AB, 19190, Sollentuna, Sweden
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9
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Buzharevski A, Paskaš S, Sárosi MB, Laube M, Lönnecke P, Neumann W, Murganić B, Mijatović S, Maksimović-Ivanić D, Pietzsch J, Hey-Hawkins E. Carboranyl Derivatives of Rofecoxib with Cytostatic Activity against Human Melanoma and Colon Cancer Cells. Sci Rep 2020; 10:4827. [PMID: 32179835 PMCID: PMC7076013 DOI: 10.1038/s41598-020-59059-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 01/24/2020] [Indexed: 12/12/2022] Open
Abstract
Owing to the involvement of cyclooxygenase-2 (COX-2) in carcinogenesis, COX-2-selective inhibitors are increasingly studied for their potential cytotoxic properties. Moreover, the incorporation of carboranes in structures of established anti-inflammatory drugs can improve the potency and metabolic stability of the inhibitors. Herein, we report the synthesis of carborane-containing derivatives of rofecoxib that display remarkable cytotoxic or cytostatic activity in the micromolar range with excellent selectivity for melanoma and colon cancer cell lines over normal cells. Furthermore, it was shown that the carborane-modified derivatives of rofecoxib showed different modes of action that were dependent on the cell type.
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Affiliation(s)
- Antonio Buzharevski
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103, Leipzig, Germany
| | - Svetlana Paskaš
- Department of Immunology, Institute for Biological Research "Siniša Stanković"- National Institute of the Republic of Serbia", Belgrade University, Belgrade, Serbia
| | - Menyhárt-Botond Sárosi
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103, Leipzig, Germany
| | - Markus Laube
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Radiopharmaceutical and Chemical Biology, Bautzner Landstrasse 400, D-01328, Dresden, Germany
| | - Peter Lönnecke
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103, Leipzig, Germany
| | - Wilma Neumann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103, Leipzig, Germany
| | - Blagoje Murganić
- Department of Immunology, Institute for Biological Research "Siniša Stanković"- National Institute of the Republic of Serbia", Belgrade University, Belgrade, Serbia
| | - Sanja Mijatović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"- National Institute of the Republic of Serbia", Belgrade University, Belgrade, Serbia
| | - Danijelа Maksimović-Ivanić
- Department of Immunology, Institute for Biological Research "Siniša Stanković"- National Institute of the Republic of Serbia", Belgrade University, Belgrade, Serbia
| | - Jens Pietzsch
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Radiopharmaceutical and Chemical Biology, Bautzner Landstrasse 400, D-01328, Dresden, Germany
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, Mommsenstrasse 4, D-01062, Dresden, Germany
| | - Evamarie Hey-Hawkins
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103, Leipzig, Germany.
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10
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Staniszewska M, Gizińska M, Kazek M, de Jesús González-Hernández R, Ochal Z, Mora-Montes HM. New antifungal 4-chloro-3-nitrophenyldifluoroiodomethyl sulfone reduces the Candida albicans pathogenicity in the Galleria mellonella model organism. Braz J Microbiol 2019; 51:5-14. [PMID: 31486049 PMCID: PMC7058776 DOI: 10.1007/s42770-019-00140-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/10/2019] [Indexed: 12/13/2022] Open
Abstract
Candida albicans represents an interesting microorganism to study complex host-pathogen interactions and for the development of effective antifungals. Our goal was to assess the efficacy of 4-chloro-3-nitrophenyldifluoroiodomethyl sulfone (named Sulfone) against the C. albicans infections in the Galleria mellonella host model. We assessed invasiveness of CAI4 parental strain and mutants: kex2Δ/KEX2 and kex2Δ/kex2Δ in G. mellonella treated with Sulfone. We determined that KEX2 expression was altered following Sulfone treatment in G. mellonella-C. albicans infection model. Infection with kex2Δ/kex2Δ induced decreased inflammation and minimal fault in fitness of larvae vs CAI4. Fifty percent of larvae died within 4–5 days (P value < 0.0001) when infected with CAI4 and kex2Δ/KEX2 at 109 CFU/mL; survival reached 100% in those injected with kex2Δ/kex2Δ. Larvae treated with Sulfone at 0.01 mg/kg 30 min before infection with all C. albicans tested survived infection at 90–100% vs C. albicans infected-PBS-treated larvae. Hypersensitive to Sulfone, kex2Δ/kex2Δ reduced virulence in survival. KEX2 was down-regulated when larvae were treated with Sulfone: 30 min before and 2 h post-SC5314-wild-type infection respectively. kex2Δ/kex2Δ was able to infect larvae, but failed to kill host when treated with Sulfone. Sulfone can be used to prevent or treat candidiasis. G. mellonella facilitates studding of host-pathogen interactions, i.e., testing host vs panel of C. albicans mutants when antifungal is dosed.
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Affiliation(s)
- Monika Staniszewska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland.
| | | | - Michalina Kazek
- Laboratory of Physiology, The Witold Stefański Institute of Parasitology, Polish Academy of Science, Twarda 51/55, 00-818, Warsaw, Poland
| | - Roberto de Jesús González-Hernández
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta s/n, col. Noria Alta, C.P. 36050, Guanajuato, Gto., Mexico
| | - Zbigniew Ochal
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland
| | - Héctor M Mora-Montes
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta s/n, col. Noria Alta, C.P. 36050, Guanajuato, Gto., Mexico
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11
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Charoenpattarapreeda J, Tan YS, Iegre J, Walsh SJ, Fowler E, Eapen RS, Wu Y, Sore HF, Verma CS, Itzhaki L, Spring DR. Targeted covalent inhibitors of MDM2 using electrophile-bearing stapled peptides. Chem Commun (Camb) 2019; 55:7914-7917. [PMID: 31225847 DOI: 10.1039/c9cc04022f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein, we describe the development of a novel staple with an electrophilic warhead to enable the generation of stapled peptide covalent inhibitors of the p53-MDM2 protein-protein interaction (PPI). The peptide developed showed complete and selective covalent binding resulting in potent inhibition of p53-MDM2 PPI.
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Affiliation(s)
| | - Yaw Sing Tan
- Bioinformatics Institute, Agency for Science, Technology and Research (A*STAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Singapore
| | - Jessica Iegre
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| | - Stephen J Walsh
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| | - Elaine Fowler
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| | - Rohan S Eapen
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, UK
| | - Yuteng Wu
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| | - Hannah F Sore
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| | - Chandra S Verma
- Bioinformatics Institute, Agency for Science, Technology and Research (A*STAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Singapore and Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore and School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 673551, Singapore
| | - Laura Itzhaki
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, UK
| | - David R Spring
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
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12
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Abstract
In this Article, we expand upon the catalytic hydrothiolation of 1,3-dienes to afford either allylic or homoallylic sulfides with high regiocontrol. Mechanistic studies support a pathway in which regioselectivity is dictated by the choice of counterion associated with the Rh center. Non-coordinating counterions, such as SbF6-, allow for η4-diene coordination to Rh complexes and result in allylic sulfides. In contrast, coordinating counterions, such as Cl-, favor neutral Rh complexes in which the diene binds η2 to afford homoallylic sulfides. We propose mechanisms that rationalize a fractional dependence on thiol for the 1,2-Markovnikov hydrothiolation while accounting for an inverse dependence on thiol in the 3,4- anti-Markovnikov pathway. Through the hydrothiolation of an essential oil (β-farnesene), we achieve the first enantioselective synthesis of (-)-agelasidine A.
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Affiliation(s)
- Xiao-Hui Yang
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Ryan T. Davison
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Shao-Zhen Nie
- Department of Chemistry, University of California, Irvine, California 92697, United States
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Faben A. Cruz
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Tristan M. McGinnis
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Vy M. Dong
- Department of Chemistry, University of California, Irvine, California 92697, United States
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13
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Croft RA, Mousseau JJ, Choi C, Bull JA. Lithium-Catalyzed Thiol Alkylation with Tertiary and Secondary Alcohols: Synthesis of 3-Sulfanyl-Oxetanes as Bioisosteres. Chemistry 2018; 24:818-821. [PMID: 29181870 PMCID: PMC5814735 DOI: 10.1002/chem.201705576] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Indexed: 11/17/2022]
Abstract
3-Sulfanyl-oxetanes are presented as promising novel bioisosteric replacements for thioesters or benzyl sulfides. From oxetan-3-ols, a mild and inexpensive Li catalyst enables chemoselective C-OH activation and thiol alkylation. Oxetane sulfides are formed from various thiols providing novel motifs in new chemical space and specifically as bioisosteres for thioesters due to their similar shape and electronic properties. Under the same conditions, various π-activated secondary and tertiary alcohols are also successful. Derivatization of the oxetane sulfide linker provides further novel oxetane classes and building blocks. Comparisons of key physicochemical properties of the oxetane compounds to selected carbonyl and methylene analogues indicate that these motifs are suitable for incorporation into drug discovery efforts.
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Affiliation(s)
- Rosemary A. Croft
- Department of ChemistryImperial College LondonSouth Kensington, LondonSW7 2AZUK
| | | | - Chulho Choi
- Pfizer Medicine DesignEastern Point RoadGrotonCT06340USA
| | - James A. Bull
- Department of ChemistryImperial College LondonSouth Kensington, LondonSW7 2AZUK
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14
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Zhu GX, Cheng PL, Goto M, Zhang N, Morris-Natschke SL, Hsieh KY, Yang GZ, Yang QR, Liu YQ, Chen HL, Zhang XS, Lee KH. Design, synthesis and potent cytotoxic activity of novel 7-(N-[(substituted-sulfonyl)piperazinyl]-methyl)-camptothecin derivatives. Bioorg Med Chem Lett 2017; 27:1750-1753. [PMID: 28285912 PMCID: PMC5512430 DOI: 10.1016/j.bmcl.2017.02.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 02/22/2017] [Accepted: 02/26/2017] [Indexed: 11/24/2022]
Abstract
In an effort to discover potent camptothecin-derived antitumor agents, novel camptothecin analogues with sulfonylpiperazinyl motifs at position-7 were designed and synthesized. They were evaluated for in vitro cytotoxicity with the sulforhodamine-B (SRB) method in five types of human tumor cell lines, A-549, MDA-MB-231, KB, KB-VIN and MCF-7. With IC50 values in the low μM to nM level, most of the new analogues showed greater cytotoxicity activity than the reference compounds irinotecan and topotecan. Furthermore, compounds 12l (IC50, 1.2nM) and 12k (IC50, 20.2nM) displayed the highest cytotoxicity against the multidrug-resistant (MDR) KB-VIN cell line and merit further development as preclinical drug candidates for treating cancer, including MDR phenotype. Our study suggested that integration of sulfonylpiperazinyl motifs into position-7 of camptothecin is an effective strategy for discovering new potent cytotoxic camptothecin derivatives.
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Affiliation(s)
- Gao-Xiang Zhu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Pi-Le Cheng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Masuo Goto
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Na Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Kan-Yen Hsieh
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Guan-Zhou Yang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Qian-Ru Yang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China.
| | - Hai-Le Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Xiao-Shuai Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States; Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan.
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15
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Dizge N, Gonuldas H, Ozay Y, Ates H, Ocakoglu K, Harputlu E, Yildirimcan S, Unyayar A. Synthesis and performance of antifouling and self-cleaning polyethersulfone/graphene oxide composite membrane functionalized with photoactive semiconductor catalyst. Water Sci Technol 2017; 75:670-685. [PMID: 28192361 DOI: 10.2166/wst.2016.543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study was performed to synthesize membranes of polyethersulfone (PES) blended with graphene oxide (GO) and PES blended with GO functionalized with photoactive semiconductor catalyst (TiO2 and ZnO). The antifouling and self-cleaning properties of composite membranes were also investigated. The GO was prepared from natural graphite powder by oxidation method at low temperature. TiO2 and ZnO nanopowders were synthesized by anhydrous sol-gel method. The surface of TiO2 and ZnO nanopowders was modified by a surfactant (myristic acid) to obtain a homogeneously dispersed mixture in a solvent, and then GO was functionalized by loading with these metal oxide nanopowders. The PES membranes blended with GO and functionalized GO into the casting solution were prepared via phase inversion method and tested for their antifouling as well as self-cleaning properties. The composite membranes were synthesized as 14%wt. of PES polymer with three different concentrations (0.5, 1.0, and 2.0%wt.) of GO, GO-TiO2, and GO-ZnO. The functionalization of membranes improved hydrophilicity property of membranes as compared to neat PES membrane. However, the lowest flux was obtained by functionalized membranes with GO-TiO2. The results showed that functionalized membranes demonstrated better self-cleaning property than neat PES membrane. Moreover, the flux recovery rate of functionalized membranes over five cycles was higher than that of neat membrane.
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Affiliation(s)
- Nadir Dizge
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Hakan Gonuldas
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Yasin Ozay
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Hasan Ates
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Kasim Ocakoglu
- Advanced Technology, Research and Application Center, Mersin University, Mersin 33343, Turkey; Department of Energy Systems Engineering, Faculty of Technology, Mersin University, Mersin 33480, Turkey
| | - Ersan Harputlu
- Advanced Technology, Research and Application Center, Mersin University, Mersin 33343, Turkey
| | - Saadet Yildirimcan
- Advanced Technology, Research and Application Center, Mersin University, Mersin 33343, Turkey; Faculty of Engineering, Department of Electrical-Electronics Engineering, Toros University, Mersin 33140, Turkey
| | - Ali Unyayar
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
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16
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Su S, Zhou X, Liao G, Qi P, Jin L. Synthesis and Antibacterial Evaluation of New Sulfone Derivatives Containing 2-Aroxymethyl-1,3,4-Oxadiazole/Thiadiazole Moiety. Molecules 2016; 22:molecules22010064. [PMID: 28042864 PMCID: PMC6155626 DOI: 10.3390/molecules22010064] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/22/2016] [Accepted: 12/27/2016] [Indexed: 11/16/2022] Open
Abstract
Sulfones are one of the most important classes of agricultural fungicides. To discover new lead compounds with high antibacterial activity, a series of new sulfone derivatives were designed and synthesized by introducing the aroxymethyl moiety into the scaffold of 1,3,4-oxadiazole/thiadiazole sulfones. Antibacterial activities against three phytopathogens (Xanthomonas oryzae pv. oryzae, Ralstonia solanacearum, Xanthomonas axonopodis pv. citri.) were assayed in vitro. As compared to the control of commercial fungicides and some reported sulfone fungicides, seven compounds 5I-1–5I-7 exerted remarkably higher activities with EC50 values ranging from 0.45–1.86 μg/mL against X. oryzae and 1.97–20.15 μg/mL against R. solanacearum. Exhilaratingly, 5I-1, 5I-2 and 5I-4 displayed significant in vivo activity against X. oryzae with protective effect of 90.4%, 77.7%, and 81.1% at 200 μg/mL, respectively, much higher than that exhibited by Bismerthiazol (25.6%) and Thiadiazole-copper (32.0%). And the differential phytotoxicity of active derivatives was preliminarily checked. The results demonstrated that derivative of 2-aroxymethyl-1,3,4-oxadiazole/thiadiazole sulfone can serve as potential alternative bactericides for the management of plant bacterial diseases.
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Affiliation(s)
- Shihu Su
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang 550025, China.
- Zunyi Agricultural Products Quality and Safety Inspection and Testing Center, Room 698, Shanghai Road, Huichuan District, Zunyi 563000, Guizhou, China.
| | - Xia Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Guoping Liao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Puying Qi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Linhong Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang 550025, China.
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17
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Xiang T, Lu T, Xie Y, Zhao WF, Sun SD, Zhao CS. Zwitterionic polymer functionalization of polysulfone membrane with improved antifouling property and blood compatibility by combination of ATRP and click chemistry. Acta Biomater 2016; 40:162-171. [PMID: 27039977 DOI: 10.1016/j.actbio.2016.03.044] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [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: 08/25/2015] [Revised: 02/26/2016] [Accepted: 03/30/2016] [Indexed: 11/15/2022]
Abstract
The chemical compositions are very important for designing blood-contacting membranes with good antifouling property and blood compatibility. In this study, we propose a method combining ATRP and click chemistry to introduce zwitterionic polymer of poly(sulfobetaine methacrylate) (PSBMA), negatively charged polymers of poly(sodium methacrylate) (PNaMAA) and/or poly(sodium p-styrene sulfonate) (PNaSS), to improve the antifouling property and blood compatibility of polysulfone (PSf) membranes. Attenuated total reflectance-Fourier transform infrared spectra, X-ray photoelectron spectroscopy and water contact angle results confirmed the successful grafting of the functional polymers. The antifouling property and blood compatibility of the modified membranes were systematically investigated. The zwitterionic polymer (PSBMA) grafted membranes showed good resistance to protein adsorption and bacterial adhesion; the negatively charged polymer (PNaSS or PNaMAA) grafted membranes showed improved blood compatibility, especially the anticoagulant property. Moreover, the PSBMA/PNaMAA modified membrane showed both antifouling property and anticoagulant property, and exhibited a synergistic effect in inhibiting blood coagulation. The functionalization of membrane surfaces by a combination of ATRP and click chemistry is demonstrated as an effective route to improve the antifouling property and blood compatibility of membranes in blood-contact.
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Affiliation(s)
- Tao Xiang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ting Lu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Yi Xie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Wei-Feng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden.
| | - Shu-Dong Sun
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chang-Sheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
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18
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De Martino G, La Regina G, Ragno R, Coluccia A, Bergamini A, Ciaprini C, Sinistro A, Maga G, Crespan E, Artico M, Silvestri R. Indolyl Aryl Sulphones as HIV-1 Non-Nucleoside Reverse Transcriptase Inhibitors: Synthesis, Biological Evaluation and Binding Mode Studies of New Derivatives at Indole-2-carboxamide. ACTA ACUST UNITED AC 2016; 17:59-77. [PMID: 17042328 DOI: 10.1177/095632020601700202] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
New non-nucleoside reverse transcriptase inhibitors (NNRTIs) that are active against the commonly occurring mutations of HIV are urgently needed for the treatment of AIDS. We synthesized new NNRTIs of the indolyl aryl sulphone (IAS) family, which are endowed with high antiviral potency against HIV-1 wt (wild-type), and the Y181C and K103N-Y181C drug resistant mutant strains. Several new compounds were highly active in lymphocytes infected with primary isolates carrying the K103N-V108I-M184V and L100I-V108I mutations. The design of new IASs was based on three-dimensional quantitative structure-activity relationship (3D QSAR) studies and docking simulations. A cross-docking study was also undertaken to gain some insights in to the binding mode of the newly synthesized IASs in the wt and mutated isoforms of reverse transcriptase.
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Affiliation(s)
- Gabriella De Martino
- Istituto Pasteur Fondazione Cenci Bolognetti, Dipartimento di Studi Farmaceutici, Università di Roma 'La Sapienza', Roma, Italy
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19
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Bertrand R, Hamp I, Brönstrup M, Weck R, Lukacevic M, Polyak A, Ross TL, Gotthardt M, Plettenburg O, Derdau V. Synthesis of GPR40 targeting 3 H- and 18 F-probes towards selective beta cell imaging. J Labelled Comp Radiopharm 2016; 59:604-610. [PMID: 27282912 DOI: 10.1002/jlcr.3412] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 11/13/2015] [Revised: 04/11/2016] [Accepted: 05/09/2016] [Indexed: 11/07/2022]
Abstract
Diabetes affects an increasing number of patients worldwide and is responsible for a significant rise in healthcare expenses. Imaging of β-cells in vivo is expected to contribute to an improved understanding of the underlying pathophysiology, improved diagnosis, and development of new treatment options for diabetes. Here, we describe the first radiosyntheses of [3 H]-TAK875 and [18 F]-TAK875 derivatives to be used as β-cell imaging probes addressing the free fatty acid receptor 1 (FFAR1/GPR40). The fluorine-labeled derivative showed similar agonistic activity as TAK875 in a functional assay. The radiosynthesis of the 18 F-labelled tracer 2a was achieved with 16.7 ± 5.7% radiochemical yield in a total synthesis time of 60-70 min.
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Affiliation(s)
- Romain Bertrand
- Diabetes Division, Research & Translational Medicine, Sanofi GmbH, Frankfurt am Main, Germany
- Department of Nuclear Medicine, Radboud UMC, Nijmegen, The Netherlands
| | - Isabel Hamp
- Diabetes Division, Research & Translational Medicine, Sanofi GmbH, Frankfurt am Main, Germany
| | - Mark Brönstrup
- Diabetes Division, Research & Translational Medicine, Sanofi GmbH, Frankfurt am Main, Germany
- Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Remo Weck
- DSAR/Drug Disposition, Sanofi GmbH, Frankfurt am Main, Germany
| | - Mario Lukacevic
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Andras Polyak
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Tobias L Ross
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Martin Gotthardt
- Department of Nuclear Medicine, Radboud UMC, Nijmegen, The Netherlands
| | - Oliver Plettenburg
- Diabetes Division, Research & Translational Medicine, Sanofi GmbH, Frankfurt am Main, Germany
- Institute of Medicinal Chemistry, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, Neuherberg DE-85764, Germany
- Leibniz Universität Hannover, Schneiderberg 1b, 30167, Hannover, Germany
| | - Volker Derdau
- DSAR/Drug Disposition, Sanofi GmbH, Frankfurt am Main, Germany
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20
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Deng J, Liu X, Zhang S, Cheng C, Nie C, Zhao C. Versatile and Rapid Postfunctionalization from Cyclodextrin Modified Host Polymeric Membrane Substrate. Langmuir 2015; 31:9665-9674. [PMID: 26301434 DOI: 10.1021/acs.langmuir.5b02038] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Surface modification has long been of great interest to impart desired functionalities to the bioimplants. However, due to the limitations of recent technologies in surface modification, it is highly desirable to explore novel protocols, which can advantageously and efficiently endow the inert material surfaces with versatile biofunctionalities. Herein, to achieve versatile and rapid postfunctionalization of polymeric membrane, we demonstrate a new strategy for the fabrication of β-cyclodextrin (β-CD) modified host membrane substrate that can recognize a series of well-designed guest macromolecules. The surface assembly procedure was driven by the host-guest interaction between adamantane (Ad) and β-CD. β-CD immobilized host membrane was fabricated via two steps: (1) epoxy groups enriched poly(ether sulfone) (PES) membrane was first prepared via in situ cross-linking polymerization and subsequently phase separation; (2) mono-6-deoxy-6-ethylenediamine-β-CD (EDA-β-CD) was then anchored onto the surface of the epoxy functionalized PES membrane to obtain PES-CD. Subsequently, three types of Ad-terminated polymers, including Ad-poly(styrenesulfonate-co-sodium acrylate) (Ad-PSA), Ad-methoxypoly(ethylene glycol) (Ad-PEG), and Ad-poly(methyl chloride-quaternized 2-(dimethylamino)ethyl methacrylate (Ad-PMT), were separately assembled onto the β-CD immobilized surfaces to endow the membranes with anticoagulant, antifouling, and antibacterial capability, respectively. Activated partial thromboplastin time (APTT), thrombin time (TT), and prothrombin time (PT) measurements were carried out to explore the anticoagulant activity. The antifouling capability was evaluated via protein adsorption and platelet adhesion measurements. Moreover, Staphyllococcous aureus (S. aureus) was selected as model bacteria to evaluate the antibacterial ability of the functionalized membranes. The results indicated that well-regulated blood compatibility, antifouling capability, and bactericidal activity could be achieved by the proposed rapid postfunctionalization on polymeric membranes. This approach of versatile and rapid postfunctionalization is promising for the preparation of multifunctional polymeric membrane materials to meet with various demands for the further applications.
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Affiliation(s)
- Jie Deng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Xinyue Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Shuqing Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Chuanxiong Nie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610064, China
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21
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Salem ME, Ahmed AA, Shaaban MR, Shibl MF, Farag AM. Regioselective synthesis and ab initio calculations of fused heterocycles thermally and under microwave irradiation. Spectrochim Acta A Mol Biomol Spectrosc 2015; 148:175-183. [PMID: 25879987 DOI: 10.1016/j.saa.2015.03.102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 03/16/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
Pyrazolo[1,5-a]pyrimidine, triazolo[1,5-a]pyrimidine, and pyrimido[1,2-a]benzimidazole, pyrido[1,2-a]benzimidazole ring systems incorporating phenylsulfonyl moiety were synthesized via the reaction of 3-(N,N-dimethylamino)-1-(thiophen-2-yl)-2-(phenylsulfonyl)prop-2-en-1-one derivatives with the appropriate aminoazoles as 1,3-binucleophiles and 1H-benzimidazol-2-ylacetonitrile using conventional methods as well as microwave irradiation. The regioselectivity of the cyclocondensation reactions was confirmed both experimentally by alternative synthesis of reaction products and theoretically using ab initio quantum chemical calculations namely the Density Functional Theory (DFT). The theoretical work was carried out using the Becke, three parameter, Lee-Yang-Parr hybrid functional (B3LYP) combined with the 6-311++G(d,p) basis set. It was found that the final cyclocondensation reaction product depends mainly on the initial addition to the activated double bond by the nitrogen atom of the 1,3-binucleophiles that has the higher electron density.
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Affiliation(s)
- Mostafa E Salem
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ashour A Ahmed
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt; Institute of Physics, Rostock University, 18051 Rostock, Germany; Steinbeis GmbH & Co. KG für Technologietransfer, 70174 Stuttgart, Germany
| | - Mohamed R Shaaban
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt; Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah Almukkarramah, Saudi Arabia
| | - Mohamed F Shibl
- Department of Materials Science and Engineering (MSE), Cornell University, Ithaca, NY 14853, USA; Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Ahmad M Farag
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
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Arshad MN, Asiri AM, Alamry KA, Mahmood T, Gilani MA, Ayub K, Birinji AS. Synthesis, crystal structure, spectroscopic and density functional theory (DFT) study of N-[3-anthracen-9-yl-1-(4-bromo-phenyl)-allylidene]-N-benzenesulfonohydrazine. Spectrochim Acta A Mol Biomol Spectrosc 2015; 142:364-74. [PMID: 25721652 DOI: 10.1016/j.saa.2015.01.101] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 12/23/2014] [Accepted: 01/30/2015] [Indexed: 05/28/2023]
Abstract
N-[3-anthracen-9-yl-1-(4-bromo-phenyl)-allylidene]-N-benzenesulfonohydrazine has been synthesized and characterized by various spectroscopic techniques including FT-IR, UV-vis, (1)H-NMR, (13)C-NMR spectroscopy, and the structure was unequivocally confirmed by single crystal X-ray diffraction studies. The compound crystallized in monoclinic system with P21/n space group, and adopted cis-geometry around the azomethine CN double bond. The X-ray crystal structure revealed that the intermolecular packing was stabilized by C-H⋯O type hydrogen bonding interaction, whereas NH was not involved in hydrogen bonding due to steric hindrance. Absorption wavelength was studied by scanning UV-vis. absorption spectrum in different solvents to explore excited state stability of the molecule in polar solvent. Density functional theory calculations were performed at B3LYP/6-31G (d, p) level in order to compare the experimental results with the theoretical results. The simulated molecular electrostatic potential (MEP), Mulliken charges and NPA (natural population analysis) also confirmed the presence of specific intermolecular hydrogen bonding (C-H⋯O). In addition natural bond orbital (NBO) analysis (intra and inter molecular bonding and interaction among bonds), frontier molecular orbital analysis (electronic properties) and first hyperpolarizability analysis (nonlinear optical response) were simulated at B3LYP/6-31G (d, p) level of theory.
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Affiliation(s)
- Muhammad Nadeem Arshad
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Khalid A Alamry
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Tariq Mahmood
- Department of Chemistry, COMSATS Institute of Information Technology, University Road, Tobe Camp, 22060 Abbottabad, Pakistan.
| | - Mazhar Amjad Gilani
- Department of Chemical Engineering, COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore, Pakistan.
| | - Khurshid Ayub
- Department of Chemistry, COMSATS Institute of Information Technology, University Road, Tobe Camp, 22060 Abbottabad, Pakistan; Department of Chemistry, College of Science, King Faisal University, Al-Hafouf 31982, Saudi Arabia
| | - Abdulhadi Salih Birinji
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
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Ravichandiran P, Athinarayanan J, Premnath D, Periasamy VS, Alshatwi AA, Vasanthkumar S. Synthesis, molecular docking and biological evaluation of novel 6-(4-(4-aminophenylsulfonyl)phenylamino)-5H-benzo[a]phenothiazin-5-one derivatives. Spectrochim Acta A Mol Biomol Spectrosc 2015; 139:477-487. [PMID: 25576946 DOI: 10.1016/j.saa.2014.12.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 07/19/2014] [Accepted: 12/09/2014] [Indexed: 06/04/2023]
Abstract
A novel series of 6-(4-(4-aminophenylsulfonyl)phenylamino)-5H-benzo[a]phenothiazin-5-one derivatives have been synthesized and examined for their in vitro antibacterial activity against a panel of Gram-positive and Gram-negative bacteria. Among these, N-(4-(4-(5-oxo-5H-benzo[a]phenothiazin-6-ylamino)phenylsulfonyl)phenyl)-3,5-bis(trifluoromethyl)benzamide (3n) (0.4 μg/mL) and 4-ethyl-N-(4-(4-(5-oxo-5H-benzo[a]phenothiazin-6-ylamino)phenylsulfonyl)phenyl)benzamide (3l) (0.6 μg/mL) systems exhibited a potent inhibitory activity against Gram-positive organism Bacillus subtilis, when compare to the other synthesized compounds. Sparfloxacin (9.76 μg/mL), Norfloxacin (no activity) were employed as the standard drugs. An evaluation of the cytotoxicity of the title compounds (1, 2, 3a-n) revealed that they displayed low toxicity (26-115 mg/L) against cervical cancer cell line (SiHa). The results of these studies suggest that, phenothiazin-5-one derivatives are interesting binding agents for the development of new Gram-positive and Gram-negative antibacterial agents. To understand the interactions with protein receptors, docking simulation was done with crystal structures of B.subtilis (YmaH) and histone deacetylase (HDAC8) to determine the probable binding conformation.
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Affiliation(s)
- Palanisamy Ravichandiran
- Department of Chemistry, School of Science & Humanities, Karunya University, Coimbatore 641 114, India.
| | - Jegan Athinarayanan
- Department of Nanosciences & Technology, School of Nanosciences & Technology, Karunya University, Coimbatore 641 114, India; Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Sciences and Agriculture, King Saud University, P.O. Box 2460, Riyadh 11451, Kingdom of Saudi Arabia
| | - Dhanaraj Premnath
- Department of Bioinformatics, School of Biotechnology and Health Sciences, Karunya University, Coimbatore 641 114, India
| | - Vaiyapuri Subbarayan Periasamy
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Sciences and Agriculture, King Saud University, P.O. Box 2460, Riyadh 11451, Kingdom of Saudi Arabia
| | - Ali A Alshatwi
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Sciences and Agriculture, King Saud University, P.O. Box 2460, Riyadh 11451, Kingdom of Saudi Arabia
| | - Samuel Vasanthkumar
- Department of Chemistry, School of Science & Humanities, Karunya University, Coimbatore 641 114, India.
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Imbrogno J, Williams MD, Belfort G. A new combinatorial method for synthesizing, screening, and discovering antifouling surface chemistries. ACS Appl Mater Interfaces 2015; 7:2385-2392. [PMID: 25569191 DOI: 10.1021/am508943u] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A set of diverse monomers were synthesized using combinatorial chemistry and tested using our unique high-throughput screening platform. The versatility of our platform is exemplified by possible applications in reducing biological fouling on ship hulls, filtration membranes, and surgical instruments, to name a few. To demonstrate its efficacy, the novel monomers were graft-polymerized onto light sensitive poly(ether sulfone) (PES) membranes via atmospheric-pressure plasma polymerization. A diverse library was synthesized by reacting a common vinyl ester linker with a library of maleimides containing various different functional groups. This allowed us to produce a library of many different surfaces and graft them all using the same linker chemistry. The modified surfaces were then tested and screened for the best antiprotein adsorption (nonfouling) properties. Membranes, functionalized with carboxylic acid, zwitterionic, and ester groups, had the lowest protein adhesion compared with that of an unmodified control PES membrane after a static fouling test. After dynamic fouling, these same functionalities as well as a hydroxyl group exhibited the highest permeability. These monomers performed better than our best previously synthesized amide monomers as well as our best poly(ethylene glycol) monomers, which are known to have very high protein resistance. Hansen solubility parameters qualitatively predicted which monomers performed best, indicating favorable interactions with water molecules.
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Affiliation(s)
- Joseph Imbrogno
- Howard P. Isermann Department of Chemical and Biological Engineering and The Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute , Troy, New York 12180, United States
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25
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Lim Y, Seo D, Lee S, Hossain MA, Lim J, Lee S, Hong T, Kim W. Synthesis and characterization of sulfonated poly(ether sulfone)s containing mesonaphthobifluorene for polymer electrolyte membrane fuel cell. J Nanosci Nanotechnol 2014; 14:7948-7953. [PMID: 25942900 DOI: 10.1166/jnn.2014.9464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The novel sulfonated poly(ether sulfone)s containing mesonaphthobifluorene (MNF) moiety were synthesized and characterized their properties. The prepared polymers have highly conjugated aromatic structure due to the MNF group which is an allotrope of carbon and one atom thick planar sheets of sp2-bonded carbon atoms. Poly(ether sulfone)s bearing tetraphenylethylene on polymer backbone were synthesized by polycondensation and followed intra-cyclization from tetraphenylethylene to form MNF by Friedel-craft reaction with Lewis acid (FeCl3). The sulfonation was performed selectively on MNF units with conc. sulfuric acid. The structural properties of the sulfonated polymers were investigated by 1H-NMR spectroscopy. The membranes were studied by ion exchange capacity (IEC), water uptake, and proton conductivity. The synthesized polymer electrolyte membranes showed better thermal and dimensional stabilities owing to the inducted highly conjugated aromatic structure in the polymer backbone. The water uptake of the synthesized membranes ranged from 23-52%, compared with 32.13% for Nafion 211 at 80 degrees C. The synthesized membranes exhibited proton conductivities (80 degrees C, RH 90%) of 74.6-100.4 mS/cm, compared with 102.7 mS/cm for Nafion 211.
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26
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Li X, Cai T, Chung TS. Anti-fouling behavior of hyperbranched polyglycerol-grafted poly(ether sulfone) hollow fiber membranes for osmotic power generation. Environ Sci Technol 2014; 48:9898-9907. [PMID: 25019605 DOI: 10.1021/es5017262] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To sustain high performance of osmotic power generation by pressure-retarded osmosis (PRO) processes, fouling on PRO membranes must be mitigated. This is especially true for the porous support of PRO membranes because its porous structure is very prone to fouling by feeding river water. For the first time, we have successfully designed antifouling PRO thin-film composite (TFC) membranes by synthesizing a dendritic hydrophilic polymer with well-controlled grafting sites, hyperbranched polyglycerol (HPG), and then grafting it on poly(ether sulfone) (PES) hollow fiber membrane supports. Compared to the pristine PES membranes, polydopamine modified membranes, and conventional poly(ethylene glycol) (PEG)-grafted membranes, the HPG grafted membranes show much superior fouling resistance against bovine serum albumin (BSA) adsorption, E. coli adhesion, and S. aureus attachment. In high-pressure PRO tests, the PES TFC membranes are badly fouled by model protein foulants, causing a water flux decline of 31%. In comparison, the PES TFC membrane grafted by HPG not only has an inherently higher water flux and a higher power density but also exhibits better flux recovery up to 94% after cleaning and hydraulic pressure impulsion. Clearly, by grafting the properly designed dendritic polymers to the membrane support, one may substantially sustain PRO hollow fiber membranes for power generation.
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Affiliation(s)
- Xue Li
- Department of Chemical & Biomolecular Engineering, National University of Singapore , Singapore 117585, Singapore
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27
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Johnson MW, Bagley SW, Mankad NP, Bergman RG, Mascitti V, Toste FD. Application of fundamental organometallic chemistry to the development of a gold-catalyzed synthesis of sulfinate derivatives. Angew Chem Int Ed Engl 2014; 53:4404-7. [PMID: 24652820 PMCID: PMC5089845 DOI: 10.1002/anie.201400037] [Citation(s) in RCA: 206] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Indexed: 11/12/2022]
Abstract
The development of a gold(I)-catalyzed sulfination of aryl boronic acids is described. This transformation proceeds through an unprecedented mechanism which exploits the reactivity of gold(I)-heteroatom bonds to form sulfinate anions. Further in situ elaboration of the sulfinate intermediates leads to the corresponding sulfones and sulfonamides, two pharmacophores routinely encountered in drug discovery.
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Affiliation(s)
- Miles W. Johnson
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
| | | | - Neal P. Mankad
- Department of Chemistry, University of Illinois at Chicago (USA)
| | - Robert G. Bergman
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
| | | | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
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28
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Li P, Shi L, Yang X, Yang L, Chen XW, Wu F, Shi QC, Xu WM, He M, Hu DY, Song BA. Design, synthesis, and antibacterial activity against rice bacterial leaf blight and leaf streak of 2,5-substituted-1,3,4-oxadiazole/thiadiazole sulfone derivative. Bioorg Med Chem Lett 2014; 24:1677-80. [PMID: 24631191 DOI: 10.1016/j.bmcl.2014.02.060] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [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: 01/14/2014] [Revised: 02/18/2014] [Accepted: 02/21/2014] [Indexed: 11/18/2022]
Abstract
A series of 2,5-substituted-1,3,4-oxadiazole/thiadiazole sulfone derivatives were synthesized and evaluated for their antibacterial activities against rice bacterial leaf blight and leaf streak caused by Xanthomonas oryzae pv. oryzae and Xanthomonas oryzae pv. oryzicolaby via the turbidimeter test in vitro. Antibacterial bioassay results indicated that most compounds demonstrated good inhibitory effect antibacterial bioactivities against rice bacterial leaf blight and leaf streak. Among the title compounds, compound 6c demonstrated the best inhibitory effect against rice bacterial leaf blight and leaf streak with half-maximal effective concentration (EC50) values of 1.07 and 7.14 μg/mL, respectively, which were even better than those of commercial agents such as Bismerthiazol and Thiediazole Copper. In vivo antibacterial activities tests at greenhouse conditions demonstrated that the controlling effect of compounds 6c (43.5%) and 6g (42.4%) against rice bacterial leaf blight were better than those of Bismerthiazol (25.5%) and Thiediazole Copper (37.5%).
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Affiliation(s)
- Pei Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Li Shi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Xia Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Lei Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Xue-Wen Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Fang Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Qing-Cai Shi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Wei-Ming Xu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Ming He
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - De-Yu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China
| | - Bao-An Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China.
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Abstract
The addition of Grignard reagents or organolithium reagents to the SO2-surrogate DABSO generates a diverse set of metal sulfinates, suitable for direct conversion to sulfone products. The metal sulfinates can be trapped in situ with a wide range of C-electrophiles, including alkyl, allyl, and benzyl halides, epoxides, and (hetero)aryliodoniums.
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Affiliation(s)
- Alex S. Deeming
- Department
of Chemistry, University of Oxford, Chemistry
Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Claire
J. Russell
- Syngenta,
Jealott’s Hill International Research Centre, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Alan J. Hennessy
- Syngenta,
Jealott’s Hill International Research Centre, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Michael C. Willis
- Department
of Chemistry, University of Oxford, Chemistry
Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
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30
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Xu WM, Li SZ, He M, Yang S, Li XY, Li P. Synthesis and bioactivities of novel thioether/sulfone derivatives containing 1,2,3-thiadiazole and 1,3,4-oxadiazole/thiadiazole moiety. Bioorg Med Chem Lett 2013; 23:5821-4. [PMID: 24070781 DOI: 10.1016/j.bmcl.2013.08.107] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [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: 04/10/2013] [Revised: 08/05/2013] [Accepted: 08/28/2013] [Indexed: 11/22/2022]
Abstract
A series of new thioether/sulfone compounds containing 1,2,3-thiadiazole and 1,3,4-oxadiazole/1,3,4-thiadiazole moiety were synthesized, the structures of all products were confirmed by IR, (1)H NMR, (13)C NMR, and element analysis. Preliminary antifungal activity test showed that compound 8a exhibited moderate antifungal activity against Fusarium oxysporum at 50μg/mL. Preliminary antiviral activity results showed that compounds 7a, 7c, 7d, 8a, and 9a displayed high antiviral activity against tobacco mosaic virus. The present work demonstrates that thioether/sulfone heterocyclic derivatives could be considered as new lead compounds for antiviral studies.
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Affiliation(s)
- Wei-Ming Xu
- Center for Research and Development of Fine Chemicals, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China.
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31
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Li P, Yin J, Xu W, Wu J, He M, Hu D, Yang S, Song B. Synthesis, antibacterial activities, and 3D-QSAR of sulfone derivatives containing 1, 3, 4-oxadiazole moiety. Chem Biol Drug Des 2013; 82:546-56. [PMID: 23819471 DOI: 10.1111/cbdd.12181] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [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: 05/02/2013] [Revised: 06/18/2013] [Accepted: 06/26/2013] [Indexed: 11/28/2022]
Abstract
A series of sulfone derivatives containing 1, 3, 4-oxadiazole moiety were prepared and evaluated for their antibacterial activities by the turbidimeter test. Most compounds inhibited growth of Ralstonia solanacearum (R. solanacearum) from tomato and tobacco bacterial wilt with high potency, among which compounds 5a and 5b exhibited the most potent inhibition against R. solanacearum from tomato and tobacco bacterial wilts with EC50 values of 19.77 and 8.29 μg/mL, respectively. Our results also demonstrated that 5a, 5b, and a number of other compounds were more potent than commercial bactericides Kocide 3000 and Thiodiazole Copper, which inhibited R. solanacearum from tomato bacterial wilt with EC50 values of 93.59 and 99.80 μg/mL and tobacco bacterial wilt with EC50 values of 45.91 and 216.70 μg/mL, respectively. The structure-activity relationship (SAR) of compounds was studied using three-dimensional quantitative structure-activity relationship (3D-QSAR) models created by comparative molecular field analysis (CoMFA) and comparative molecular similarity index analysis (CoMSIA) based on compound bioactivities against tomato and tobacco bacterial wilts. The 3D-QSAR models effectively predicted the correlation between inhibitory activity and steric-electrostatic properties of compounds.
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Affiliation(s)
- Pei Li
- State Key Laboratory Breeding Base of Blue Pesticide and Agricultural Bioengineering, Key Laboratory of Blue Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, 550025, China
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32
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Tang Q, Lin S, Cheng Y, Liu S, Xiong JR. Ultrasound-assisted oxidative desulfurization of bunker-C oil using tert-butyl hydroperoxide. Ultrason Sonochem 2013; 20:1168-1175. [PMID: 23538118 DOI: 10.1016/j.ultsonch.2013.02.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Revised: 01/30/2013] [Accepted: 02/16/2013] [Indexed: 06/02/2023]
Abstract
This work investigated the ultrasonic assisted oxidative desulfurization of bunker-C oil with TBHP/MoO3 system. The operational parameters for the desulfurization procedure such as ultrasonic irradiation time, ultrasonic wave amplitude, catalyst initial concentration and oxidation agent initial concentration were studied. The experimental results show that the present oxidation system was very efficient for the desulfurization of bunker-C oil and ~35% sulfur was removed which was dependent on operational parameters. The application of ultrasonic irradiation allowed sulfur removal in a shorter time. The stronger the solvent polarity is, the higher the sulfur removal rate, but the recovery rate of oil is lower. The sulfur compounds in bunker-C oil reacted with TBHP to produce corresponding sulfoxide, and further oxidation produced the corresponding sulfone.
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Affiliation(s)
- Qiong Tang
- Department of Chemistry and Life Science, Leshan Normal University, Leshan 614004, PR China
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33
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Ivachtchenko A, Golovina E, Kadieva M, Mitkin O, Tkachenko S, Okun I. Synthesis of substituted diphenyl sulfones and their structure-activity relationship with the antagonism of 5-НТ6 receptors. Bioorg Med Chem 2013; 21:4614-27. [PMID: 23787290 DOI: 10.1016/j.bmc.2013.05.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/05/2013] [Accepted: 05/15/2013] [Indexed: 11/17/2022]
Abstract
Substituted diphenyl sulfones (10a-n) were synthesised, and the structures were confirmed by NMR, LC-MS and X-ray crystallography. Their antagonistic activities towards 5-HT₆ receptor were assessed in a cell-based functional assay. Diphenyl sulfone 10a, in spite of being the smallest and simplest known sulfonyl-containing 5-HT₆R antagonist, showed a strong potency (Ki=1.6 μM). Its derivative with a methylamine substituent, 10g (N-methyl-2-(phenylsulfonyl)aniline), was ∼66-times as active as diphenyl sulfone (Ki=24.3 nM). Addition of a piperazinyl moiety in the para-position relative to the sulfonyl group in compound 10m (N-methyl-2-(phenylsulfonyl)-5-piperazin-1-ylaniline) led to a further 150-fold increase in potency (Ki=0.16 nM) to block the serotonin-induced response of HEK-293 cells that were stably transfected with the human recombinant 5-HT₆ receptor.
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Affiliation(s)
- Alexandre Ivachtchenko
- Department of Organic Chemistry and Department of Molecular Pharmacology, CDRI, 114401 Khimki, Moscow Reg, Russia
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34
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Pallela VR, Mallireddigari MR, Cosenza SC, Akula B, Venkata Subbaiah DRC, Reddy EP, Ramana Reddy MV. Hydrothiolation of benzyl mercaptan to arylacetylene: application to the synthesis of (E) and (Z)-isomers of ON 01910·Na (Rigosertib®), a phase III clinical stage anti-cancer agent. Org Biomol Chem 2013; 11:1964-77. [PMID: 23386308 PMCID: PMC5949069 DOI: 10.1039/c3ob27220f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A stereoselective and efficient method for free radical addition of benzyl thiol to aryl acetylene in the presence of Et3B-hexane has been developed for the synthesis of (Z) and (E)-styryl benzyl sulfides where base catalyzed hydrothiolations have failed. The scope of this reaction was successfully extended for the synthesis of (E)-ON 01910·Na, a phase III clinical stage anti-cancer agent and its inactive geometrical isomer (Z)-ON 01910·Na. It is interesting to note that all the E-isomers synthesized have shown better cytotoxicity profile on cancer cells compared to the Z-isomers.
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Affiliation(s)
- Venkat R. Pallela
- Department of Medicinal Chemistry, Onconova Therapeutics Inc., 375 Pheasant Run, Newtown, PA 18940-3423, USA
| | | | - Stephen C. Cosenza
- Department of Oncological Sciences, Mount Sinai School of Medicine, Icahn Medical Institute, 1425 Madison Ave., New York, NY 10029-6514, USA
| | - Balaiah Akula
- Department of Medicinal Chemistry, Onconova Therapeutics Inc., 375 Pheasant Run, Newtown, PA 18940-3423, USA
| | - D. R. C. Venkata Subbaiah
- Department of Oncological Sciences, Mount Sinai School of Medicine, Icahn Medical Institute, 1425 Madison Ave., New York, NY 10029-6514, USA
| | - E. Premkumar Reddy
- Department of Oncological Sciences, Mount Sinai School of Medicine, Icahn Medical Institute, 1425 Madison Ave., New York, NY 10029-6514, USA
| | - M. V. Ramana Reddy
- Department of Oncological Sciences, Mount Sinai School of Medicine, Icahn Medical Institute, 1425 Madison Ave., New York, NY 10029-6514, USA
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35
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Wu WL, Sasikumar TK, Domalski MS, Qiang L, Burnett DA, Clader J, Greenlee WJ, Chan TM, Lee J, Zhang L. A-ring modification of SCH 900229 and related chromene sulfone γ-secretase inhibitors. Bioorg Med Chem Lett 2013; 23:850-3. [PMID: 23265902 DOI: 10.1016/j.bmcl.2012.11.054] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 11/09/2012] [Accepted: 11/14/2012] [Indexed: 11/19/2022]
Abstract
Attempts to block metabolism by incorporating a 9-fluoro substituent at the A-ring of compound 1 (SCH 900229) using electrophilic Selectfluor™ led to an unexpected oxidation of the A-ring to give difluoroquinone analog 1a. Oxidation of other related chromene γ-secretase inhibitors 2-8 resulted in similar difluoroquinone analogs 2a-8a, respectively. These quinone products exhibited comparable in vitro potency in a γ-scretase membrane assay, but were several fold less potent in a cell-based assay in lowering Aβ40-42, compared to their parent compounds.
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Affiliation(s)
- Wen-Lian Wu
- Merck Research Laboratories, 2015 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
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36
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Thevis M, Möller I, Beuck S, Schänzer W. Synthesis, mass spectrometric characterization, and analysis of the PPARδ agonist GW1516 and its major human metabolites: targets in sports drug testing. Methods Mol Biol 2013; 952:301-312. [PMID: 23100242 DOI: 10.1007/978-1-62703-155-4_22] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The elucidation of metabolic pathways and the detection of emerging therapeutics potentially enhancing athletic performance are of paramount importance to doping control authorities to protect the integrity of elite sports. A new drug candidate belonging to the family of the peroxisome proliferator-activated receptor-delta agonists termed GW1516 (also referred to as GW501516) has been prohibited by the World Anti-Doping Agency in 2009 due to its potential to artificially increase endurance. Consequently, sports drug testing laboratories need to establish detection methods enabling the identification of the intact substance and/or its metabolite(s) that unambiguously prove the presence or absence of the target substances in doping control specimens. Simulating human metabolic reactions using liver microsomal preparations, minute amounts of possible urinary metabolites were obtained that were characterized by mass spectrometry-based methods. Subsequently, the most abundant metabolic products were chemically synthesized and as well characterized by mass spectrometry and nuclear magnetic resonance spectroscopy. Finally, GW1516 and two oxidized metabolites were implemented in a routine doping control analytical assay based on liquid chromatography-(tandem) mass spectrometry (LC-MS/MS), which was tested for its -fitness-for-purpose using spiked urine samples.
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Affiliation(s)
- Mario Thevis
- Institute of Biochemistry, Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany.
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37
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Kibrik BS, Pavlov AV, Chelnokova OG. [Bacteriological substantiation of the antituberculosis effect of immunotropic drug tubosan]. Eksp Klin Farmakol 2013; 76:20-22. [PMID: 23631279] [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: 06/02/2023]
Abstract
The antituberculosis effect of tubosan registered in the Russian Federation as an immunostimulant drug has been studied on a series of 53 clinical strains of Mycobacterium tuberculosis (MBT). It is established that tubosan produces a bactericidal effect on drug-sensitive MBT strains and a bacteriostatic effect on resistant MBT strains. Use of tubosan for the treatment of 102 patients with drug-resistant destructive tuberculosis showed evident clinical-radiological involution process, with prospects of clinical recovery for 75% of patients. Results of this study show that tubosan possesses both antituberculosis and immunostimulant properties. It is recommended to use tubosan for complex treatment of patients with drug-resistant tuberculosis.
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38
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Cohen A, Crozet MD, Rathelot P, Azas N, Vanelle P. Synthesis and promising in vitro antiproliferative activity of sulfones of a 5-nitrothiazole series. Molecules 2012; 18:97-113. [PMID: 23344190 PMCID: PMC6270398 DOI: 10.3390/molecules18010097] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 11/14/2012] [Accepted: 12/12/2012] [Indexed: 11/29/2022] Open
Abstract
The synthesis in water of new sulfone derivatives under microwave irradiation is described. This eco-friendly process leads to the expected products in good yields by reaction of various substituted sulfinates (commercially available or obtained by reduction of the corresponding sulfonyl chlorides) with 4-chloromethyl-2-methyl-5-nitro-1,3-thiazole. In order to evaluate the antiproliferative effect of these compounds, several sulfone derivatives are also dichlorinated on the Cα next to the sulfonyl group. An evaluation on different cancer cell lines reveals promising selective in vitro antiproliferative activity toward HepG2 human cell lines by dihydrogenated sulfones, suggesting further research should be to explore their anticancer potential in the treatment of liver cancer.
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Affiliation(s)
- Anita Cohen
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR UMR 7273, Aix-Marseille Univ, CNRS, 27 Boulevard Jean Moulin - CS30064 - 13385 Marseille cedex 05, France
- Infections Parasitaires, Transmission, Pharmacologie et Thérapeutique IP-TPT UMR MD3, Faculté de Pharmacie, Aix-Marseille Univ, 27 Boulevard Jean Moulin - CS30064 - 13385 Marseille cedex 05, France
| | - Maxime D. Crozet
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR UMR 7273, Aix-Marseille Univ, CNRS, 27 Boulevard Jean Moulin - CS30064 - 13385 Marseille cedex 05, France
| | - Pascal Rathelot
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR UMR 7273, Aix-Marseille Univ, CNRS, 27 Boulevard Jean Moulin - CS30064 - 13385 Marseille cedex 05, France
| | - Nadine Azas
- Infections Parasitaires, Transmission, Pharmacologie et Thérapeutique IP-TPT UMR MD3, Faculté de Pharmacie, Aix-Marseille Univ, 27 Boulevard Jean Moulin - CS30064 - 13385 Marseille cedex 05, France
- Authors to whom correspondence should be addressed; (P.V., for chemistry); (N.A., for biology); Tel.: +33-4-9183-5573 (P.V.); Fax: +33-4-8613-6822 (P.V.); Tel.: +33-4-9183-5564 (N.A.); Fax: +33-4-9183-5537 (N.A.)
| | - Patrice Vanelle
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR UMR 7273, Aix-Marseille Univ, CNRS, 27 Boulevard Jean Moulin - CS30064 - 13385 Marseille cedex 05, France
- Authors to whom correspondence should be addressed; (P.V., for chemistry); (N.A., for biology); Tel.: +33-4-9183-5573 (P.V.); Fax: +33-4-8613-6822 (P.V.); Tel.: +33-4-9183-5564 (N.A.); Fax: +33-4-9183-5537 (N.A.)
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39
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Kottakota SK, Benton M, Evangelopoulos D, Guzman JD, Bhakta S, McHugh TD, Gray M, Groundwater PW, Marrs ECL, Perry JD, Harburn JJ. Versatile routes to marine sponge metabolites through benzylidene rhodanines. Org Lett 2012; 14:6310-3. [PMID: 23234337 DOI: 10.1021/ol303057a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of the marine natural products Psammaplin C and Tokaradine A is described. Benzylidene rhodanines were utilized as versatile intermediates toward the synthesis of seven brominated marine sponge metabolites through the optimization of protection group strategies. Spermatinamine demonstrated good inhibition of all cancer cell lines tested, in particular the leukemia K562 and colon cancer HT29 cell lines.
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Affiliation(s)
- Suresh K Kottakota
- Sunderland Pharmacy School, Department of Pharmacy, Health & Well Being, University of Sunderland, Wharncliffe Street, Sunderland, SR1 3SD, UK
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40
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Tarr JC, Turlington ML, Reid PR, Utley TJ, Sheffler DJ, Cho HP, Klar R, Pancani T, Klein M, Bridges T, Morrison R, Blobaum A, Xiang Z, Daniels JS, Niswender CM, Conn PJ, Wood MR, Lindsley CW. Targeting selective activation of M(1) for the treatment of Alzheimer's disease: further chemical optimization and pharmacological characterization of the M(1) positive allosteric modulator ML169. ACS Chem Neurosci 2012; 3:884-95. [PMID: 23173069 PMCID: PMC3503349 DOI: 10.1021/cn300068s] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 07/18/2012] [Indexed: 02/02/2023] Open
Abstract
The M(1) muscarinic acetylcholine receptor is thought to play an important role in memory and cognition, making it a potential target for the treatment of Alzheimer's disease (AD) and schizophrenia. Moreover, M(1) interacts with BACE1 and regulates its proteosomal degradation, suggesting selective M(1) activation could afford both palliative cognitive benefit as well as disease modification in AD. A key challenge in targeting the muscarinic acetylcholine receptors is achieving mAChR subtype selectivity. Our lab has previously reported the M(1) selective positive allosteric modulator ML169. Herein we describe our efforts to further optimize this lead compound by preparing analogue libraries and probing novel scaffolds. We were able to identify several analogues that possessed submicromolar potency, with our best example displaying an EC(50) of 310 nM. The new compounds maintained complete selectivity for the M(1) receptor over the other subtypes (M(2)-M(5)), displayed improved DMPK profiles, and potentiated the carbachol (CCh)-induced excitation in striatal MSNs. Selected analogues were able to potentiate CCh-mediated nonamyloidogenic APPsα release, further strengthening the concept that M(1) PAMs may afford a disease-modifying role in the treatment of AD.
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Affiliation(s)
- James C. Tarr
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Mark L. Turlington
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Paul R. Reid
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Thomas J. Utley
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Douglas J. Sheffler
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Hyekyung P. Cho
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Rebecca Klar
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Tristano Pancani
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Michael
T. Klein
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Thomas
M. Bridges
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Ryan
D. Morrison
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Anna
L. Blobaum
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Zixui Xiang
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - J. Scott Daniels
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Colleen M. Niswender
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - P. Jeffrey Conn
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Michael R. Wood
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
| | - Craig W. Lindsley
- Department
of Pharmacology, Department of Chemistry, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt Specialized
Chemistry Center for Probe Development (MLPCN), and Vanderbilt Institute of Chemical
Biology/Chemical Synthesis Core, Vanderbilt
University Medical Center, Nashville, Tennessee 37232,
United States
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Defonsi Lestard ME, Ramos LA, Tuttolomondo ME, Ulic SE, Ben Altabef A. Bis (trifluoromethyl) sulfone, CF3SO2CF3: synthesis, vibrational and conformational properties. Spectrochim Acta A Mol Biomol Spectrosc 2012; 96:332-339. [PMID: 22706098 DOI: 10.1016/j.saa.2012.05.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 05/07/2012] [Accepted: 05/17/2012] [Indexed: 06/01/2023]
Abstract
Bis (trifluoromethyl) sulfone, CF(3)SO(2)CF(3), was obtained as a byproduct in the synthesis of CF(3)SO(2)SCF(3). The compound was characterized by infrared and Raman spectroscopy as well quantum chemical calculations. Quantum mechanical calculations indicate the possible existence of two conformers symmetrically equivalent with C(2) symmetry. The preference for the staggered form was studied using the total energy scheme and the natural bond orbital (NBO) partition scheme. Additionally, the total potential energy was deconvoluted using a sixfold decomposition in terms of a Fourier-type expansion, showing that the hyperconjugative effect was dominant in stabilizing the staggered conformer. Infrared and Raman spectra of CF(3)SO(2)CF(3) were obtained. Harmonic vibrational wavenumbers and a scaled force field were calculated, leading to a final root mean-square deviation of 7.8 cm(-1) when comparing experimental and calculated wavenumbers.
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Affiliation(s)
- M E Defonsi Lestard
- INQUINOA-CONICET, Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, San Lorenzo 456, T4000CAN Tucumán, Argentina
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42
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Wang D, Zhang X, Nie S, Zhao W, Lu Y, Sun S, Zhao C. Photoresponsive surface molecularly imprinted poly(ether sulfone) microfibers. Langmuir 2012; 28:13284-13293. [PMID: 22894645 DOI: 10.1021/la302687d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In the present study, photoresponsive surface molecularly imprinted poly(ether sulfone) microfibers are prepared via nitration reaction, the wet-spinning technique, surface nitro reduction reaction, and surface diazotation reaction for the selectively photoregulated uptake and release of 4-hydrobenzoic acid. The prepared molecularly imprinted microfibers show selective binding to 4-HA under irradiation at 450 nm and release under irradiation at 365 nm. The simple, convenient, effective, and productive method for the preparation of azo-containing photoresponsive material is also applied to the modification of polysulfone and poly(ether ether ketone). All three benzene-ring-containing polymers show significant photoresponsibility after the azo modification.
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Affiliation(s)
- Dongsheng Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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43
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Abstract
A mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs(2)CO(3)-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes bearing electron-withdrawing functionalities is also shown.
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Affiliation(s)
- Samir K. Mandal
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Arun K. Ghosh
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
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Kniess T, Laube M, Bergmann R, Sehn F, Graf F, Steinbach J, Wuest F, Pietzsch J. Radiosynthesis of a ¹⁸F-labeled 2,3-diarylsubstituted indole via McMurry coupling for functional characterization of cyclooxygenase-2 (COX-2) in vitro and in vivo. Bioorg Med Chem 2012; 20:3410-21. [PMID: 22560838 DOI: 10.1016/j.bmc.2012.04.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 04/04/2012] [Accepted: 04/10/2012] [Indexed: 11/18/2022]
Abstract
The radiosynthesis of 3-(4-[(18)F]fluorophenyl)-2-(4-methylsulfonylphenyl)-1H-indole [(18)F]-3 as potential PET radiotracer for functional characterization of cyclooxygenase-2 (COX-2) in vitro and in vivo is described. [(18)F]-3 was prepared by McMurry cyclization of a (18)F-labeled intermediate with low valent titanium and zinc via a two-step procedure in a remote controlled synthesizer unit including HPLC purification and solid phase extraction. In this way [(18)F]-3 was synthesized in 80 min synthesis time in 10% total decay corrected yield from [(18)F]fluoride in radiochemical purity >98% and a specific activity of 74-91 GBq/μmol (EOS). [(18)F]-3 was evaluated in vitro using pro-inflammatory stimulated THP-1 and COX-2 expressing tumor cell lines (FaDu, A2058, HT-29), where the radiotracer uptake was shown to be consistent with up regulated COX-2 expression. The stability of [(18)F]-3 was determined by incubation in rat whole blood and plasma in vitro and by metabolite analysis of arterial blood samples in vivo, showing with 75% of original compound after 60 min an acceptable high metabolic stability. However, no substantial tumor accumulation of [(18)F]-3 could be observed by dynamic small animal PET studies on HT-29 tumor-bearing mice in vivo. This may be due to the only moderate COX-1/COX-2 selectivity of 3 as demonstrated by both cellular and enzymatic cyclooxygenase inhibition assay in vitro. Nevertheless, the new approach first using McMurry cyclization in (18)F-chemistry gives access to (18)F-labeled diarylsubstituted heterocycles that hold promise as radiolabeled COX-2 inhibitors.
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Affiliation(s)
- Torsten Kniess
- Institute of Radiopharmacy, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.
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Wang C, Ashton TD, Gustafson A, Bland ND, Ochiana SO, Campbell RK, Pollastri MP. Synthesis and evaluation of human phosphodiesterases (PDE) 5 inhibitor analogs as trypanosomal PDE inhibitors. Part 1. Sildenafil analogs. Bioorg Med Chem Lett 2012; 22:2579-81. [PMID: 22370268 PMCID: PMC3307826 DOI: 10.1016/j.bmcl.2012.01.119] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 01/25/2012] [Accepted: 01/30/2012] [Indexed: 12/20/2022]
Abstract
Parasitic diseases, such as African sleeping sickness, have a significant impact on the health and well-being in the poorest regions of the world. Pragmatic drug discovery efforts are needed to find new therapeutic agents. In this Letter we describe target repurposing efforts focused on trypanosomal phosphodiesterases. We outline the synthesis and biological evaluation of analogs of sildenafil (1), a human PDE5 inhibitor, for activities against trypanosomal PDEB1 (TbrPDEB1). We find that, while low potency analogs can be prepared, this chemical class is a sub-optimal starting point for further development of TbrPDE inhibitors.
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Affiliation(s)
- Cuihua Wang
- Northeastern University Department of Chemistry & Chemical Biology, 417 Egan Research Center, 360 Huntington Avenue, Boston, MA 02115, USA
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Saleh TS, Eldebss TMA, Albishri HM. Ultrasound assisted one-pot, three-components synthesis of pyrimido[1,2-a]benzimidazoles and pyrazolo[3,4-b]pyridines: A new access via phenylsulfone synthon. Ultrason Sonochem 2012; 19:49-55. [PMID: 21723178 DOI: 10.1016/j.ultsonch.2011.05.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Revised: 04/20/2011] [Accepted: 05/04/2011] [Indexed: 05/31/2023]
Abstract
A simple, facile, efficient and three-components procedure for the synthesis of pyrimido[1,2-a]benzimidazoles and pyrazolo[3,4-b]pyridines utilizing phenylsulfone synthon, under ultrasonic irradiation was developed.
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Affiliation(s)
- Tamer S Saleh
- Green Chemistry Department, National Research Centre, Dokki, Cairo 12622, Egypt.
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Xu W, He J, He M, Han F, Chen X, Pan Z, Wang J, Tong M. Synthesis and antifungal activity of novel sulfone derivatives containing 1,3,4-oxadiazole moieties. Molecules 2011; 16:9129-41. [PMID: 22045041 PMCID: PMC6264464 DOI: 10.3390/molecules16119129] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Revised: 10/24/2011] [Accepted: 10/25/2011] [Indexed: 11/16/2022] Open
Abstract
A series of new sulfone compounds containing 1,3,4-oxadiazole moieties were synthesized. The structures of these compounds were confirmed by spectroscopic data (IR, ¹H- and ¹³C-NMR) and elemental analyses. Antifungal tests indicated that all the title compounds exhibited good antifungal activities against eight kinds of plant pathogenic fungi, and some showed superiority over the commercial fungicide hymexazol. Among them, compounds 5d, 5e, 5f, and 5i showed prominent activity against B. cinerea, with determined EC₅₀ values of 5.21 μg/mL, 8.25 µg/mL, 8.03 µg/mL, and 21.00 µg/mL, respectively. The present work demonstrates that sulfone derivatives such as 5d containing a 1,3,4-oxadiazole moiety can be used as possible lead compounds for the development of potential agrochemicals.
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Affiliation(s)
- Weiming Xu
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, China.
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Reid PR, Bridges TM, Sheffler DJ, Cho HP, Lewis LM, Days E, Daniels JS, Jones CK, Niswender CM, Weaver CD, Conn PJ, Lindsley CW, Wood MR. Discovery and optimization of a novel, selective and brain penetrant M1 positive allosteric modulator (PAM): the development of ML169, an MLPCN probe. Bioorg Med Chem Lett 2011; 21:2697-701. [PMID: 21194936 PMCID: PMC3082000 DOI: 10.1016/j.bmcl.2010.12.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 11/29/2010] [Accepted: 12/02/2010] [Indexed: 10/18/2022]
Abstract
This Letter describes a chemical lead optimization campaign directed at VU0108370, a weak M(1) PAM hit with a novel chemical scaffold from a functional HTS screen within the MLPCN. An iterative parallel synthesis approach rapidly established SAR for this series and afforded VU0405652 (ML169), a potent, selective and brain penetrant M(1) PAM with an in vitro profile comparable to the prototypical M(1) PAM, BQCA, but with an improved brain to plasma ratio.
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Affiliation(s)
- Paul R Reid
- Vanderbilt Institute of Chemical Biology/Chemical Synthesis Core, Nashville, TN 37232, USA
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Vasan M, Neres J, Williams J, Wilson DJ, Teitelbaum AM, Remmel RP, Aldrich CC. Inhibitors of the salicylate synthase (MbtI) from Mycobacterium tuberculosis discovered by high-throughput screening. ChemMedChem 2011; 5:2079-87. [PMID: 21053346 DOI: 10.1002/cmdc.201000275] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A simple steady-state kinetic high-throughput assay was developed for the salicylate synthase MbtI from Mycobacterium tuberculosis, which catalyzes the first committed step of mycobactin biosynthesis. The mycobactins are small-molecule iron chelators produced by M. tuberculosis, and their biosynthesis has been identified as a promising target for the development of new antitubercular agents. The assay was miniaturized to a 384-well plate format and high-throughput screening was performed at the National Screening Laboratory for the Regional Centers of Excellence in Biodefense and Emerging Infectious Diseases (NSRB). Three classes of compounds were identified comprising the benzisothiazolones (class I), diarylsulfones (class II), and benzimidazole-2-thiones (class III). Each of these compound series was further pursued to investigate their biochemical mechanism and structure-activity relationships. Benzimidazole-2-thione 4 emerged as the most promising inhibitor owing to its potent reversible inhibition.
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Affiliation(s)
- Mahalakshmi Vasan
- Center for Drug Design, University of Minnesota, Minneapolis, 55455, USA
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Zhang H, Li Y, Xu W, Zheng W, Zhou P, Sun Z. Practical and stereoselective synthesis of β-amino sulfones from alkyl phenyl sulfones and N-(tert-butylsulfinyl) aldimines. Org Biomol Chem 2011; 9:6502-5. [PMID: 21858348 DOI: 10.1039/c1ob05992k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Hua Zhang
- School of Environment Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
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