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Lv W, Li M, Tao Y. Bridged Bicyclic Lactam Enables Chemically Recyclable Nylon. Angew Chem Int Ed Engl 2024; 63:e202402541. [PMID: 38502026 DOI: 10.1002/anie.202402541] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/10/2024] [Accepted: 03/18/2024] [Indexed: 03/20/2024]
Abstract
Nylon, a widely-used high-performance thermoplastic, boasts exceptional durability and resistance to various solvents and weak acids, making it indispensable across diverse applications. However, its nonbiodegradable nature has led to alarming environmental pollution in land and oceans. Chemical recycling to monomers (CRM) stands as a crucial strategy for establishing a circular plastic economy, but the CRM of nylon remains largely unexplored. Herein, we introduce the bridged bicyclic lactam 5-azabicyclo[2.2.1]octan-6-one (5/6-LM), evolved from δ-valerolactam and pyrrolidone, to solve the trade-off in depolymerizability and performance. Notably, 5/6-LM exhibits nearly 95 % conversion in mild polymerization conditions and efficient depolymerization catalyzed by lewis acids. This compound is synthetically accessible from commercially available chemicals in a single step at room temperature, demonstrating high efficiency and scalability up to 50 g in laboratory. Furthermore, the resulting polyamide displays remarkable attributes including high crystallinity and thermostability up to 283 °C, significantly broadening the scope of chemically recyclable nylons.
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Affiliation(s)
- Wenxiu Lv
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun, 130022, People's Republic of China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Maosheng Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun, 130022, People's Republic of China
| | - Youhua Tao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun, 130022, People's Republic of China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, People's Republic of China
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2
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Chopin N, Bosson J, Iikawa S, Picot S, Bienvenu AL, Lavoignat A, Bonnot G, Riou M, Beaugé C, Guillory V, Biot C, Pilet G, Chessé M, Davioud-Charvet E, Elhabiri M, Bouillon JP, Médebielle M. Evaluation of ferrocenyl-containing γ-hydroxy-γ- lactam-derived tetramates as potential antiplasmodials. Eur J Med Chem 2022; 243:114735. [PMID: 36122550 DOI: 10.1016/j.ejmech.2022.114735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 05/05/2022] [Accepted: 08/29/2022] [Indexed: 11/24/2022]
Abstract
A series of ferrocenyl-containing γ-hydroxy-γ-lactam tetramates were prepared in 2-3 steps through ring opening-ring closure (RORC) process of γ-ylidene-tetronate derivatives in the presence of ferrocenyl alkylamines. The compounds were screened in vitro for their antiplasmodial activity against chloroquine-sensitive (3D7) and chloroquine-resistant (W2) clones of P. falciparum, displaying activity in the range of 0.12-100 μM, with generally good resistance index. The most active ferrocene in these series exhibited IC50 equal to 0.09 μM (3D7) and 0.12 μM (W2). The low cytotoxicity of the ferrocenyl-containing γ-hydroxy-γ-lactam tetramates against Human Umbilical Vein Endothelial (HUVEC) cell line demonstrated selective antiparasitic activity. The redox properties of these ferrocene-derived tetramates were studied and physico-biochemical studies evidenced that these derivatives can exert potent antimalarial activities via a mechanism distinct from ferroquine.
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Affiliation(s)
- Nicolas Chopin
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France
| | - Julien Bosson
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France
| | - Shinya Iikawa
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France
| | - Stéphane Picot
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France; Institut de Parasitologie et Mycologie Médicale, Groupement Hospitalier Nord, Hospices Civils de Lyon, Lyon, France
| | - Anne-Lise Bienvenu
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France; Service Pharmacie, Groupement Hospitalier Nord, Hospices Civils de Lyon, Lyon, France
| | - Adeline Lavoignat
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France
| | - Guillaume Bonnot
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France
| | - Mickael Riou
- INRAE, UE-1277 Plateforme d'Infectiologie Expérimentale (PFIE), Centre Val de Loire, Nouzilly, France
| | - Corinne Beaugé
- INRAE, UE-1277 Plateforme d'Infectiologie Expérimentale (PFIE), Centre Val de Loire, Nouzilly, France
| | - Vanaïque Guillory
- INRAE, UE-1277 Plateforme d'Infectiologie Expérimentale (PFIE), Centre Val de Loire, Nouzilly, France; INRAE, UMR-1282 Infectiologie et Santé Publique (ISP), Centre Val de Loire - Université de Tours, Nouzilly, France
| | - Christophe Biot
- Université de Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Guillaume Pilet
- Univ. Lyon, Université Lyon 1, CNRS, LMI, UMR 5615, Villeurbanne, France
| | - Matthieu Chessé
- UMR 7042 Université de Strasbourg‒CNRS‒UHA, Laboratoire d'Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Elisabeth Davioud-Charvet
- UMR 7042 Université de Strasbourg‒CNRS‒UHA, Laboratoire d'Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France
| | - Mourad Elhabiri
- UMR 7042 Université de Strasbourg‒CNRS‒UHA, Laboratoire d'Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France.
| | - Jean-Philippe Bouillon
- Normandie Université, COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont Saint-Aignan, France.
| | - Maurice Médebielle
- Univ. Lyon, Université Lyon 1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Villeurbanne, France.
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Kazakova O, Rubanik L, Lobov A, Poleshchuk N, Baikova I, Kapustina Y, Petrova A, Korzun T, Lopatina T, Fedorova A, Rybalova T, Polovianenko D, Mioc M, Șoica C. Synthesis of erythrodiol C-ring derivatives and their activity against Chlamydia trachomatis. Steroids 2021; 175:108912. [PMID: 34480919 DOI: 10.1016/j.steroids.2021.108912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/04/2021] [Accepted: 08/25/2021] [Indexed: 11/18/2022]
Abstract
To develop new potential agents against Chlamydia trachomatis among oleanane type triterpenoids the synthesis, spectral and X-ray analysis as well as antimicrobial screening of C-12 oxygen and nitrogen derivatives of erythrodiol is presented. The reduction of methyl 3β-acetoxy-12-oxo-oleanoate with LiAlH4 led to isomeric erythrodiol 12β- and 12α-hydroxy-derivatives, their stereochemistry with respect to the position of hydroxyl-group at C-12 was determined based on the multiplets splitting patterns, the magnitude of the spin-spin interaction, and NOESY interactions. Methyl 3β-acetoxy-12-oxo-oleanoate was transformed to 12E-hydroxyimino- and 12E-methoxyimino-derivatives by the interaction with NH2OH∙HCl or CH3ONH2∙HCl, respectively. By Beckmann rearrangement with SOCl2 in dioxane 12E-oxime was converted to C-lactame and its following reduction with LiAlH4 in THF or dioxane led to erythrodiol C-azepanone or C-azepane derivatives. The structure 3-O,12-N-bis-acetyl-derivative of C-azepane-erythrodiol was confirmed by the single crystal X-ray analysis. Erythrodiol 12β-hydroxy- and C-azepane derivatives were found to be lead compounds with significant activity against C. trachomatis with MIC 1.56 and 3.125 μg/mL. Molecular docking was employed to suggest potential binding interaction, the tested compounds are likely to act as Cdu1 protein inhibitors while 12β-hydroxy-erythrodiol exhibited the highest affinity towards this respective target protein. These results indicated that C-ring oxygen and nitrogen erythrodiol derivatives might be considered for further research in the design of antibacterial agents against Chlamydia trachomatis.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation.
| | - Liudmila Rubanik
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Alexander Lobov
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Nikolai Poleshchuk
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Irina Baikova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Yuliya Kapustina
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Anastasiya Petrova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Tatyana Korzun
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Tatyana Lopatina
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Alexandra Fedorova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Tatyana Rybalova
- N.N. Vorozhtzov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk 630090, Russian Federation
| | - Dmitri Polovianenko
- N.N. Vorozhtzov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk 630090, Russian Federation
| | - Marius Mioc
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, Timisoara 300041, Romania
| | - Codruța Șoica
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, Timisoara 300041, Romania
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Matiadis D, Tsironis D, Stefanou V, Boussias S, Panagiotopoulou A, McKee V, Igglessi-Markopoulou O, Markopoulos J. Synthesis, biological evaluation and structure-activity relationships of 5-arylidene tetramic acids with antibacterial activity against methicillin-resistant Staphylococcus aureus. Bioorg Med Chem Lett 2020; 30:127107. [PMID: 32216991 DOI: 10.1016/j.bmcl.2020.127107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 01/27/2023]
Abstract
The steady rise of the antimicrobial resistance is a major global threat to human health that requires the urgent need for novel antibiotics. In this work we report the synthesis of a small library of 3-subsituted-5-arylidene tetramic acids in order to investigate the scope of our previously established methodology via an intermediate oxazolone and their antimicrobial activity. From this series of 14 tetramic acids, 11 derivatives are novel and one of them is a Schiff base, which was structurally characterized with single-crystal X-ray analysis and NMR spectroscopy. The compounds incorporating a lipophilic acyl group at carbon-3 of the ring showed moderate to high activity with minimum inhibitory activity of 4-32 μg/mL against methicillin-resistant Staphylococcus aureus (MRSA), accompanied by no human cell toxicity and hemolytic activity within the tested concentration range. The substituent at para position of the aryl ring seemed to have no or little effect on the antimicrobial activity of these compounds.
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5
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Wang S, Bao L, Song D, Wang J, Cao X. Heterocyclic lactam derivatives containing piperonyl moiety as potential antifungal agents. Bioorg Med Chem Lett 2019; 29:126661. [PMID: 31515187 DOI: 10.1016/j.bmcl.2019.126661] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 08/08/2019] [Accepted: 09/01/2019] [Indexed: 12/19/2022]
Abstract
To study the novel functionalized heterocyclic molecules with highly potential biological activity, two series of heterocyclic lactam derivatives containing the piperonyl moiety were designed and synthesized. The newly obtained compounds have been identified on the basis of analytical spectral data, including 1H NMR, 13C NMR, and ESI-MS. The target compounds were evaluated for their potential antifungal activities in vitro against twelve species of the plant pathogen fungi (Sclerotinia sclerotiorum, Rhizoctonia solani, Rap Sclerotinia stemrot, Fusarium graminearum, Phomopsis adianticola, Pestallozzia theae, Pestalotiopsis guepinii, Alternaria tenuis Nees, Monilinia fructicola, Colletotrichum gloeosporioides, Phytophthora capsici, Magnaporthe oryzae). Preliminary bioassays suggested that all prepared compounds I1-14 displayed broad-spectrum and moderate antifungal activities compared with the positive control hymexazol, especially for Sclerotinia sclerotiorum, Rap Sclerotinia stemrot, and Monilinia fructicola. In particular, the inhibition rate of compound I9 exhibited good inhibition activity reached 95.16% against Sclerotinia sclerotiorum, and compounds I5, I12 against Phytophthora capsici were 93.44%, 91.25%. Further studies revealed that compounds I5 (IC50 = 19.13 µM) and I12 (IC50 = 9.12 µM) exhibited obviously antifungal activities against Phytophthora capsici, which were better than that of commercial agricultural fungicide hymexazol (IC50 = 325.45 µM). Therefore, these target compounds could be further studied and explored as a lead skeleton for discovery of novel antifungal agents.
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Kalinová JP, Tříska J, Vrchotová N, Novák J. Uptake of capro lactam and its influence on growth and oxygen production of Desmodesmus quadricauda algae. Environ Pollut 2016; 213:518-523. [PMID: 26985739 DOI: 10.1016/j.envpol.2016.03.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/30/2015] [Revised: 02/20/2016] [Accepted: 03/06/2016] [Indexed: 06/05/2023]
Abstract
The consumption of polyamides produced from caprolactam is increasing continuously, and for that reason the danger of environmental contamination by this lactam is also rising. This study's aim was to evaluate the influence of caprolactam on the growth and oxygen production of the green alga Desmodesmus quadricauda and on caprolactam uptake by this alga. The presence of caprolactam in water was observed to cause the algae significantly to increase its oxygen production. Caprolactam concentration of 5,000 mg/L stopped algae growth after 6 days and influenced coenobia structure (seen as disappearance of pyrenoids, deformation of cells) but did not decrease the number of cells in the coenobia. Caprolactam uptake is probably passive but relatively rapid. Maximum concentration in the algae was reached after 18-24 h.
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Affiliation(s)
- Jana Pexová Kalinová
- Faculty of Agriculture, University of South Bohemia, Studentská 13, 370 05 České Budějovice, Czech Republic.
| | - Jan Tříska
- Laboratory of Metabolomics and Isotopic Analyses, Global Change Research Centre, Academy of Sciences of the Czech Republic, Branišovská 31, České Budějovice 370 05, Czech Republic
| | - Naděžda Vrchotová
- Laboratory of Metabolomics and Isotopic Analyses, Global Change Research Centre, Academy of Sciences of the Czech Republic, Branišovská 31, České Budějovice 370 05, Czech Republic
| | - Jan Novák
- Institute of Complex Systems, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Zámek 136, 373 33 Nové Hrady, Czech Republic
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7
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Baranovsky AV, Bolibrukh DA, Schneider B. Solvolysis of 14,17-etheno-bridged 16α-nitroestratrienyl acetate and lactam formation pathways studied by LC-NMR and LC-MS. Structures of minor products. Steroids 2015; 104:37-48. [PMID: 26296334 DOI: 10.1016/j.steroids.2015.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 08/15/2015] [Indexed: 11/17/2022]
Abstract
The ethanol solvolysis of 3-methoxy-14,17-etheno-16α-nitroestra-1,3,5(10)-trien-17β-yl acetate in the presence of NaHCO3 was studied by means of real-time NMR experiments, LC-SPE-NMR, and LC-MS. The pathway to form 3-methoxy-2'-oxopyrrolidino-[4',5':14β,15β]-estra-1,3,5(10)-trien-17-one was disclosed. The intermediacy of nitrile oxide and alkoxynitrone was postulated based on the analysis of the reaction products. The proposed mechanism of cleaving the bridge in the nitro compound is legal for the formation of N-acetoxylactams, nitriles, isoxazoles and isoxazolines.
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Affiliation(s)
- Alexander V Baranovsky
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus.
| | - Dmitry A Bolibrukh
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus
| | - Bernd Schneider
- Max Planck Institute for Chemical Ecology, Beutenberg Campus, Hans Knöll Str. 8, D-07745 Jena, Germany
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Choomuenwai V, Beattie KD, Healy PC, Andrews KT, Fechner N, Davis RA. Entona lactams A-C: Isoindolinone derivatives from an Australian rainforest fungus belonging to the genus Entonaema. Phytochemistry 2015; 117:10-16. [PMID: 26057224 DOI: 10.1016/j.phytochem.2015.05.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 02/19/2015] [Revised: 05/25/2015] [Accepted: 05/26/2015] [Indexed: 06/04/2023]
Abstract
Bioassay-guided fractionation of an antimalarial DCM/MeOH extract derived from the Australian rainforest fungus Entonaema sp. resulted in the isolation of three new isoindolinone derivatives, entonalactams A-C (1-3), along with the known natural products 3-methoxy-5-methylbenzene-1,2-diol (4), daldinal B (5), and ergosta-4,6,8(14),22-tetraen-3-one (6). The chemical structures of the new secondary metabolites were determined following extensive 1D/2D NMR and MS data analysis. A single crystal X-ray structure for entonalactam A (1) confirmed the NMR-based structure assignment. Entonalactams A-C (1-3) were all determined to be racemic based on chiro-optical data. All secondary metabolites were tested in vitro against Plasmodium falciparum malaria parasites, and ergosta-4,6,8(14),22-tetraen-3-one (6) was identified as the most active compound with 66% inhibition at 50 μM.
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Affiliation(s)
- Vanida Choomuenwai
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Karren D Beattie
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Peter C Healy
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Katherine T Andrews
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Nigel Fechner
- Queensland Herbarium, Brisbane Botanic Gardens Mt Coot-tha, Brisbane, QLD 4066, Australia
| | - Rohan A Davis
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia.
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9
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Shi YN, Tu ZC, Wang XL, Yan YM, Fang P, Zuo ZL, Hou B, Yang TH, Cheng YX. Bioactive compounds from the insect Aspongopus chinensis. Bioorg Med Chem Lett 2014; 24:5164-9. [PMID: 25442305 DOI: 10.1016/j.bmcl.2014.09.083] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 09/24/2014] [Accepted: 09/27/2014] [Indexed: 11/29/2022]
Abstract
Recent studies focusing on unveiling the biological agents of Aspongopus chinensis have led to the identification of four new norepinephrine derivatives (1-4), three new sesquiterpenoids (5-7), and one new lactam (8). In addition, twenty-three known compounds have been identified, most of which were isolated from this insect for the first time. Selected members of insect-derived substances were evaluated for their biological activities against renal protection in high-glucose-induced mesangial cells and COX-2 inhibition.
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Affiliation(s)
- Yan-Ni Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Yuquan Road 19, Beijing 100049, People's Republic of China
| | - Zheng-Chao Tu
- Key Laboratory of Regenerative Biology and Institute of Chemical Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, People's Republic of China
| | - Xin-Long Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yong-Ming Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Yuquan Road 19, Beijing 100049, People's Republic of China
| | - Ping Fang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Zhi-Li Zuo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Bo Hou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Tong-Hua Yang
- Department of Hematology, First People's Hospital of Yunnan Province, Kunming 650032, People's Republic of China.
| | - Yong-Xian Cheng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.
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10
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Abstract
A novel approach to 3-oxo-γ-carbolines was worked out starting from methyl indol-2-ylacetate via a gramine derivative. After quaternization, ammonia and 4-methoxybenzylamine could be inserted giving appropriate 3-oxo-γ-carbolines. Condensation with 2-chlorobenzaldehyde under microwave irradiation gave a 4-(2-chlorobenzyl)-3-oxo-γ-carboline. N-methylation lead to a product with very promising antifungal and cytotoxic activities.
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Affiliation(s)
- Uwe Wollein
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University, Butenandtstr. 5-13, 81377 Munich, Germany
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