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Qiao H, Zhao K, Zhu X, Xu X, Wang S, Yang L, Wang C, Zhong L, Ma B, Yang D, Xing P, Liu G, Jiao M. Photocatalyzed C3-H Nitrosylation of Imidazo[1,2- a]pyridine under Continuous Flow and External Photocatalyst-, Oxidant-, and Additive-Free Conditions. J Org Chem 2024. [PMID: 38753574 DOI: 10.1021/acs.joc.4c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This study reports a protocol for the highly regioselective photocatalyzed C-H nitrosylation of imidazo[1,2-a]pyridine scaffolds at the C3 position under a combination of visible-light irradiation and continuous flow without any external photocatalyst. This protocol involves mild and safe conditions and shows good tolerance to air and water along with excellent functional group compatibility and site selectivity, generating various 3-nitrosoimidazo[1,2-a]pyridines in excellent yields under photocatalyst-, oxidant-, and additive-free conditions.Notably, the proposed nitrosylation reaction, which introduces the chromophore NO into imidazo[1,2-a]pyridine scaffolds, occurs efficiently under visible-light irradiation without any additional photocatalyst owing to the intense light-absorption characteristics of the nitrosylation products. This study could guide future studies on the development of green organic-synthesis strategies with a wide variety of potential applications.
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Affiliation(s)
- Huijie Qiao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Kun Zhao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Xilin Zhu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Xiaoxu Xu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Shixing Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Liting Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Chunyang Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Lulu Zhong
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Baiwei Ma
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Dehong Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Peizhi Xing
- Henan Bio-based material Industry Research Institute Co., LTD, Puyang 457001, P. R. China
| | - Guoqun Liu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Mingli Jiao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
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2
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Zhang X, Zhang G, Yan Q, Ahmad B, Pei J, Huang L. Quality variation and salt-alkali-tolerance mechanism of Cynomorium songaricum: Interacting from microbiome-transcriptome-metabolome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 919:170801. [PMID: 38340858 DOI: 10.1016/j.scitotenv.2024.170801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/22/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Addressing soil salinization and implementing sustainable practices for cultivating cash crops on saline-alkali land is a prominent global challenge. Cynomorium songaricum is an important salt-alkali tolerant medicinal plant capable of adapting to saline-alkali environments. In this study, two typical ecotypes of C. songaricum from the desert-steppe (DS) and saline-alkali land (SAL) habitats were selected. Through the integration of multi-omics with machine learning, the rhizosphere microbial communities, genetic maps, and metabolic profiles of two ecotypes were created and the crucial factors for the adaptation of C. songaricum to saline-alkali stress were identified, including 7 keystone OTUs (i.e. Novosphingobium sp., Sinorhizobium meliloti, and Glycomyces sp.), 5 core genes (cell wall-related genes), and 10 most important metabolites (i.e. cucurbitacin D and 3-Hydroxybutyrate) were identified. Our results indicated that under saline-alkali environments, the microbial competition might become more intense, and the microbial community network had the simple but stable structure, accompanied by the changes in the gene expression related to cell wall for adaptation. However, this regulation led to the reduction in active ingredients, such as the accumulation of flavonoids and organic acid, and enhanced the synthesis of bitter substances (cucurbitacin D), resulting in the decrease in the quality of C. songaricum. Therefore, compared to the SAL ecotype, the DS was more suitable for the subsequent development of medicinal and edible products of C. songaricum. Furthermore, to explore the reasons for this quality variation, we constructed a comprehensive microbial-genetic-metabolic regulatory network, revealing that the metabolism of C. songaricum was primarily influenced by genetic factors. These findings not only offer new insights for future research into plant salt-alkali tolerance strategies but also provide a crucial understanding for cultivating high-quality medicinal plants.
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Affiliation(s)
- Xinke Zhang
- Key lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China
| | - Guoshuai Zhang
- Key lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China
| | - Qi Yan
- Key lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China
| | - Bashir Ahmad
- Center for Biotechnology & Microbiology, University of Peshawar, 25000 Peshawar, Pakistan
| | - Jin Pei
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China.
| | - Linfang Huang
- Key lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China.
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3
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Zada S, Khan M, Su Z, Sajjad W, Rafiq M. Cryosphere: a frozen home of microbes and a potential source for drug discovery. Arch Microbiol 2024; 206:196. [PMID: 38546887 DOI: 10.1007/s00203-024-03899-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 04/02/2024]
Abstract
The world is concerned about the emergence of pathogens and the occurrence and spread of antibiotic resistance among pathogens. Drug development requires time to combat these issues. Consequently, drug development from natural sources is unavoidable. Cryosphere represents a gigantic source of microbes that could be the bioprospecting source of natural products with unique scaffolds as molecules or drug templates. This review focuses on the novel source of drug discovery and cryospheric environments as a potential source for microbial metabolites having potential medicinal applications. Furthermore, the problems encountered in discovering metabolites from cold-adapted microbes and their resolutions are discussed. By adopting modern practical approaches, the discovery of bioactive compounds might fulfill the demand for new drug development.
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Affiliation(s)
- Sahib Zada
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Mohsin Khan
- Department of Biological Sciences, Ohio University Athens, Athens, OH, USA
| | - Zheng Su
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Wasim Sajjad
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Muhammad Rafiq
- Department of Microbiology, Faculty of Life Sciences and Informatics, Balochistan University of IT, Engineering and Management Sciences, Quetta, 87650, Pakistan.
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4
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Sharma R, Yadav L, Nasim AA, Yadav RK, Chen RH, Kumari N, Ruiqi F, Sharon A, Sahu NK, Ippagunta SK, Coghi P, Wong VKW, Chaudhary S. Chemo-/Regio-Selective Synthesis of Novel Functionalized Spiro[pyrrolidine-2,3'-oxindoles] under Microwave Irradiation and Their Anticancer Activity. Molecules 2023; 28:6503. [PMID: 37764279 PMCID: PMC10537280 DOI: 10.3390/molecules28186503] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
A novel series of nitrostyrene-based spirooxindoles were synthesized via the reaction of substituted isatins 1a-b, a number of α-amino acids 2a-e and (E)-2-aryl-1-nitroethenes 3a-e in a chemo/regio-selective manner using [3+2] cycloaddition (Huisgen) reaction under microwave irradiation conditions. The structure elucidation of all the synthesized spirooxindoles were done using 1H and 13C NMR and HRMS spectral analysis. The single crystal X-ray crystallographic study of compound 4l was used to assign the stereochemical arrangements of the groups around the pyrrolidine ring in spiro[pyrrolidine-2,3'-oxindoles] skeleton. The in vitro anticancer activity of spiro[pyrrolidine-2,3'-oxindoles] analogs 4a-w against human lung (A549) and liver (HepG2) cancer cell lines along with immortalized normal lung (BEAS-2B) and liver (LO2) cell lines shows promising results. Out of the 23 synthesized spiro[pyrrolidine-2,3'-oxindoles], while five compounds (4c, 4f, 4m, 4q, 4t) (IC50 = 34.99-47.92 µM; SI = 0.96-2.43) displayed significant in vitro anticancer activity against human lung (A549) cancer cell lines, six compounds (4c, 4f, 4k, 4m, 4q, 4t) (IC50 = 41.56-86.53 µM; SI = 0.49-0.99) displayed promising in vitro anticancer activity against human liver (HepG2) cancer cell lines. In the case of lung (A549) cancer cell lines, these compounds were recognized to be more efficient and selective than standard reference artemisinin (IC50 = 100 µM) and chloroquine (IC50 = 100 µM; SI: 0.03). However, none of them were found to be active as compared to artesunic acid [IC50 = 9.85 µM; SI = 0.76 against lung (A549) cancer cell line and IC50 = 4.09 µM; SI = 2.01 against liver (HepG2) cancer cell line].
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Affiliation(s)
- Richa Sharma
- Laboratory of Organic and Medicinal Chemistry (OMC Lab), Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, Rajasthan, India; (R.S.); (L.Y.); (R.K.Y.); (N.K.S.)
| | - Lalit Yadav
- Laboratory of Organic and Medicinal Chemistry (OMC Lab), Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, Rajasthan, India; (R.S.); (L.Y.); (R.K.Y.); (N.K.S.)
| | - Ali Adnan Nasim
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China; (A.A.N.); (R.H.C.); (F.R.)
| | - Ravi Kant Yadav
- Laboratory of Organic and Medicinal Chemistry (OMC Lab), Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, Rajasthan, India; (R.S.); (L.Y.); (R.K.Y.); (N.K.S.)
| | - Rui Hong Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China; (A.A.N.); (R.H.C.); (F.R.)
| | - Neha Kumari
- Department of Applied Chemistry, Birla Institute of Technology Mesra, Ranchi 835215, Jharkhand, India; (N.K.); (A.S.)
| | - Fan Ruiqi
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China; (A.A.N.); (R.H.C.); (F.R.)
| | - Ashoke Sharon
- Department of Applied Chemistry, Birla Institute of Technology Mesra, Ranchi 835215, Jharkhand, India; (N.K.); (A.S.)
| | - Nawal Kishore Sahu
- Laboratory of Organic and Medicinal Chemistry (OMC Lab), Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, Rajasthan, India; (R.S.); (L.Y.); (R.K.Y.); (N.K.S.)
- Department of Chemistry, Government Engineering College, Bharatpur 321303, Rajasthan, India
| | - Sirish Kumar Ippagunta
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India;
| | - Paolo Coghi
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China; (A.A.N.); (R.H.C.); (F.R.)
- School of Pharmacy, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China
| | - Vincent Kam Wai Wong
- Dr. Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China
| | - Sandeep Chaudhary
- Laboratory of Organic and Medicinal Chemistry (OMC Lab), Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, Rajasthan, India; (R.S.); (L.Y.); (R.K.Y.); (N.K.S.)
- Laboratory of Bioactive Heterocycles and Catalysis (BHC Lab), Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli (Transit Campus), Bijnor–Sisendi Road, Near CRPF Base Camp, Sarojini Nagar, Lucknow 226002, Uttar Pradesh, India
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5
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Zhang H, Su RC, Qin YL, Wang XJ, Chen D, Liu XR, Jiang YX, Zhao P. Regioselective synthesis of 3-nitroindoles under non-acidic and non-metallic conditions. RSC Adv 2023; 13:26581-26586. [PMID: 37674482 PMCID: PMC10478488 DOI: 10.1039/d3ra03193d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 07/26/2023] [Indexed: 09/08/2023] Open
Abstract
An electrophilic substitution reaction, without acid and metal, of indole with ammonium tetramethylnitrate for accessing 3-nitroindole has been developed. In this protocol, trifluoroacetyl nitrate (CF3COONO2) was produced by metathesis of ammonium tetramethyl nitrate and trifluoroacetic anhydride at sub-room temperature. Trifluoroacetyl nitrate (CF3COONO2) is an electrophilic nitrating agent for a variety of indoles, aromatic and heterocyclic aromaticity. Meanwhile, this strategy could be applied to construct the skeleton structure of many kinds of bioactive molecules. Interestingly, 3-nitroindole can be further derivatived as a pyrrolo[2,3-b]indole.
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Affiliation(s)
- Hua Zhang
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Rong-Chuan Su
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Yu-Li Qin
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Xiao-Juan Wang
- Department of Innovation & Entrepreneurship of NSMC China
| | - Dan Chen
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Xiao-Rong Liu
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Yu-Xin Jiang
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
| | - Peng Zhao
- Department of Pharmacology, North Sichuan Medical College Nanchong 637100 China
- Institute of Materia Medica of North Sichuan Medical College China
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6
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Ganeshkumar A, Gonçale JC, Rajaram R, Junqueira JC. Anti-Candidal Marine Natural Products: A Review. J Fungi (Basel) 2023; 9:800. [PMID: 37623571 PMCID: PMC10455659 DOI: 10.3390/jof9080800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
Candida spp. are common opportunistic microorganisms in the human body and can cause mucosal, cutaneous, and systemic infections, mainly in individuals with weakened immune systems. Candida albicans is the most isolated and pathogenic species; however, multi-drug-resistant yeasts like Candida auris have recently been found in many different regions of the world. The increasing development of resistance to common antifungals by Candida species limits the therapeutic options. In light of this, the present review attempts to discuss the significance of marine natural products in controlling the proliferation and metabolism of C. albicans and non-albicans species. Natural compounds produced by sponges, algae, sea cucumber, bacteria, fungi, and other marine organisms have been the subject of numerous studies since the 1980s, with the discovery of several products with different chemical frameworks that can inhibit Candida spp., including antifungal drug-resistant strains. Sponges fall under the topmost category when compared to all other organisms investigated. Terpenoids, sterols, and alkaloids from this group exhibit a wide array of inhibitory activity against different Candida species. Especially, hippolide J, a pair of enantiomeric sesterterpenoids isolated from the marine sponge Hippospongia lachne, exhibited strong activity against Candida albicans, Candida parapsilosis, and Candida glabrata. In addition, a comprehensive analysis was performed to unveil the mechanisms of action and synergistic activity of marine products with conventional antifungals. In general, the results of this review show that the majority of chemicals derived from the marine environment are able to control particular functions of microorganisms belonging to the Candida genus, which can provide insights into designing new anti-candidal therapies.
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Affiliation(s)
- Arumugam Ganeshkumar
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, Sao Paulo State University (UNESP), Sao Jose dos Campos 12245-000, Brazil;
- Department of Materials Physics, Saveetha School of Engineering, Saveetha Nagar, Thandalam, Chennai 602105, India
| | - Juliana Caparroz Gonçale
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, Sao Paulo State University (UNESP), Sao Jose dos Campos 12245-000, Brazil;
| | - Rajendran Rajaram
- Department of Marine Science, Bharathidasan University, Tiruchirappalli 620024, India;
| | - Juliana Campos Junqueira
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, Sao Paulo State University (UNESP), Sao Jose dos Campos 12245-000, Brazil;
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7
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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8
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Sánchez-González R, Leyton P, Aguilar LF, Reyna-Jeldes M, Coddou C, Díaz K, Mellado M. Resveratrol-Schiff Base Hybrid Compounds with Selective Antibacterial Activity: Synthesis, Biological Activity, and Computational Study. Microorganisms 2022; 10:microorganisms10081483. [PMID: 35893541 PMCID: PMC9330556 DOI: 10.3390/microorganisms10081483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 11/16/2022] Open
Abstract
Nowadays, antimicrobial resistance is a serious concern associated with the reduced efficacy of traditional antibiotics and an increased health burden worldwide. In response to this challenge, the scientific community is developing a new generation of antibacterial molecules. Contributing to this effort, and inspired by the resveratrol structure, five new resveratrol-dimers (9a−9e) and one resveratrol-monomer (10a) were synthetized using 2,5-dibromo-1,4-diaminobenzene (8) as the core compound for Schiff base bridge conformation. These compounds were evaluated in vitro against pathogenic clinical isolates of Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus sp., and Listeria monocytogenes. Antibacterial activity measurements of resveratrol-Schiff base derivatives (9a−9e) and their precursors (4−8) showed high selectivity against Listeria monocytogenes, being 2.5 and 13.7 times more potent than chloramphenicol, while resveratrol showed an EC50 > 320 µg/mL on the same model. Moreover, a prospective mechanism of action for these compounds against L. monocytogenes strains was proposed using molecular docking analysis, finding a plausible inhibition of internalin C (InlC), a surface protein relevant in bacteria−host interaction. These results would allow for the future development of new molecules for listeriosis treatment based on compound 8.
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Affiliation(s)
- Rodrigo Sánchez-González
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (R.S.-G.); (P.L.); (L.F.A.)
| | - Patricio Leyton
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (R.S.-G.); (P.L.); (L.F.A.)
| | - Luis F. Aguilar
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (R.S.-G.); (P.L.); (L.F.A.)
| | - Mauricio Reyna-Jeldes
- Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo 1781421, Chile; (M.R.-J.); (C.C.)
- Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago 8330025, Chile
- Núcleo para el Estudio del Cáncer a Nivel Básico, Aplicado y Clínico, Universidad Católica del Norte, Antofagasta 1270709, Chile
| | - Claudio Coddou
- Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo 1781421, Chile; (M.R.-J.); (C.C.)
- Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago 8330025, Chile
- Núcleo para el Estudio del Cáncer a Nivel Básico, Aplicado y Clínico, Universidad Católica del Norte, Antofagasta 1270709, Chile
| | - Katy Díaz
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
- Correspondence: (K.D.); (M.M.)
| | - Marco Mellado
- Instituto de Investigación y Postgrado, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago 8330507, Chile
- Correspondence: (K.D.); (M.M.)
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9
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β-Nitrostyrene derivatives as broad range potential antifungal agents targeting fungal cell wall. Eur J Med Chem 2022; 240:114609. [DOI: 10.1016/j.ejmech.2022.114609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 06/26/2022] [Accepted: 07/10/2022] [Indexed: 11/22/2022]
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10
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Vargas DF, Kaufman TS, Larghi EL. Total Synthesis of Aqabamycin G, a Nitrophenyl Indolylmaleimide Marine Alkaloid from Vibrio sp. WMBA. J Org Chem 2022; 87:13494-13500. [PMID: 35324169 DOI: 10.1021/acs.joc.2c00063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of the marine alkaloid aqabamycin G is disclosed. The synthetic sequence involved the stepwise addition to maleimide of an indole motif and a substituted diazo-benzenoid unit derived from acetaminophen. An alternative strategy using a protected phenol is also reported.
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Affiliation(s)
- Didier F Vargas
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Enrique L Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
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11
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Wu S, You F, Boughton B, Liu Y, Nguyen TAH, Wykes J, Southam G, Robertson LM, Chan TS, Lu YR, Lutz A, Yu D, Yi Q, Saha N, Huang L. Chemodiversity of Dissolved Organic Matter and Its Molecular Changes Driven by Rhizosphere Activities in Fe Ore Tailings Undergoing Eco-Engineered Pedogenesis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:13045-13060. [PMID: 34565140 DOI: 10.1021/acs.est.1c04527] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Dissolved organic matter (DOM) plays an important role in soil structure and biogeochemical function development, which are fundamental for the eco-engineering of tailings-soil formation to underpin sustainable tailings rehabilitation. In the present study, we have characterized the DOM composition and its molecular changes in an alkaline Fe ore tailing primed with organic matter (OM) amendment and plant colonization. The results demonstrated that microbial OM decomposition dramatically increased DOM richness and average molecular weight, as well as its degree of unsaturation, aromaticity, and oxidation in the tailings. Plant colonization drove molecular shifts of DOM by depleting the unsaturated compounds with a high value of nominal oxidation state of carbon (NOSC), such as tannin-like and carboxyl-rich polycyclic-like compounds. This may be partially related to their sequestration by secondary Fe-Si minerals formed from rhizosphere-driven mineral weathering. Furthermore, the molecular shifts of DOM may have also resulted from plant-regulated microbial community changes, which further influenced DOM molecules through microbial-DOM interactions. These findings contribute to the understanding of DOM biogeochemistry and ecofunctionality in the tailings during early pedogenesis driven by OM input and pioneer plant/microbial colonization, providing an important basis for the development of strategies and technologies toward the eco-engineering of tailings-soil formation.
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Affiliation(s)
- Songlin Wu
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Fang You
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Berin Boughton
- Metabolomics Australia, School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
- Australian National Phenome Centre, Murdoch University, Murdoch, Western Australia 6150, Australia
| | - Yunjia Liu
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Tuan A H Nguyen
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Jeremy Wykes
- Australian Synchrotron, Melbourne, Victoria 3168, Australia
| | - Gordon Southam
- School of Earth & Environmental Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Lachlan M Robertson
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Centre, Hsinchu Science Park, Hsinchu 300, Taiwan
| | - Ying-Rui Lu
- National Synchrotron Radiation Research Centre, Hsinchu Science Park, Hsinchu 300, Taiwan
| | - Adrian Lutz
- Metabolomics Australia, School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Dingyi Yu
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Qing Yi
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Narottam Saha
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Longbin Huang
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
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12
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Shoberu A, Li CK, Qian HF, Zou JP. Copper-catalyzed, N-auxiliary group-controlled switchable transannulation/nitration initiated by nitro radicals: selective synthesis of pyridoquinazolones and 3-nitroindoles. Org Chem Front 2021. [DOI: 10.1039/d1qo01141c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Within the scope of nitration reactions, the efficiency of sensitive heteroaromatics such as indoles is often eroded by various competitive oxidative decomposition pathways.
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Affiliation(s)
- Adedamola Shoberu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Cheng-Kun Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Hai-Feng Qian
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Jian-Ping Zou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
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13
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Hu S, Chai WC, Xu L, Li S, Jin C, Zhu R, Yang L, Zhang R, Tang K, Li P, Yang E, Chang W, Shen T, Semple S, Venter H, Xiang L. Catecholic alkaloid sulfonates and aromatic nitro compounds from Portulaca oleracea and screening of their anti-inflammatory and anti-microbial activities. PHYTOCHEMISTRY 2021; 181:112587. [PMID: 33246306 DOI: 10.1016/j.phytochem.2020.112587] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 11/03/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
Acidic compounds were enriched from a water decoction of Portulaca oleracea using 717 anion exchange resin column chromatography. A total of 22 compounds including 9 catecholamine derivatives, of which six were rare sulfonic acid derivatives, and 9 nitro derivatives, were further isolated through various column chromatographic methods, and their structures were elucidated by interpreting their spectroscopic data and ECD calculations. Among them, 16 compounds were isolated from P. oleracea for the first time, 8 of which were undescribed compounds and four compounds were natural products. Pharmacological screening indicated that cis-3-(3-nitro-4-hydroxyphenyl)-methyl acrylate exhibited anti-inflammatory activity, measured as inhibition of nitric oxide production in LPS-stimulated RAW264.7 macrophage cells, with an EC50 value of 18.0 μM, The compounds showed only weak anti-microbial activity with (2R)-(+)-2-chloro-3-(3-nitro-4-hydroxyphenyl)-propionic acid methyl ester inhibiting Candida albicans with a MIC of 256 μg/mL, and 3-methoxy-4,5-dinitrophenol inhibiting Shigella sonnei with a MIC of 512 μg/mL.
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Affiliation(s)
- Shuiyao Hu
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Wern Chern Chai
- University of South Australia, Clinical and Health Sciences, Adelaide, South Australia, 5000, Australia
| | - Lintao Xu
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Shaoqiang Li
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Cuirong Jin
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, 250100, People's Republic of China
| | - Luping Yang
- Shandong Center for Disease Control and Prevention, Jinan, Shandong, 250014, People's Republic of China
| | - Ranran Zhang
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Kaijun Tang
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Ping Li
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Erlan Yang
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Wenqiang Chang
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Tao Shen
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Susan Semple
- University of South Australia, Clinical and Health Sciences, Adelaide, South Australia, 5000, Australia
| | - Henrietta Venter
- University of South Australia, Clinical and Health Sciences, Adelaide, South Australia, 5000, Australia
| | - Lan Xiang
- Key Laboratory of Chemical Biology (Ministry of Education), Institute of Pharmacognosy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, People's Republic of China.
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14
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Chesnokov GA, Ageshina AA, Maryanova AV, Rzhevskiy SA, Gribanov PS, Topchiy MA, Nechaev MS, Asachenko AF. Nitromethane as a reagent for the synthesis of 3-nitroindoles from 2-haloarylamine derivatives. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-3028-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Rizzo C, Lo Giudice A. The Variety and Inscrutability of Polar Environments as a Resource of Biotechnologically Relevant Molecules. Microorganisms 2020; 8:microorganisms8091422. [PMID: 32947905 PMCID: PMC7564310 DOI: 10.3390/microorganisms8091422] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 11/16/2022] Open
Abstract
The application of an ever-increasing number of methodological approaches and tools is positively contributing to the development and yield of bioprospecting procedures. In this context, cold-adapted bacteria from polar environments are becoming more and more intriguing as valuable sources of novel biomolecules, with peculiar properties to be exploited in a number of biotechnological fields. This review aims at highlighting the biotechnological potentialities of bacteria from Arctic and Antarctic habitats, both biotic and abiotic. In addition to cold-enzymes, which have been intensively analysed, relevance is given to recent advances in the search for less investigated biomolecules, such as biosurfactants, exopolysaccharides and antibiotics.
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Affiliation(s)
- Carmen Rizzo
- Stazione Zoologica Anton Dohrn, Department Marine Biotechnology, National Institute of Biology, Villa Pace, Contrada Porticatello 29, 98167 Messina, Italy
- Correspondence:
| | - Angelina Lo Giudice
- Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata San Raineri 86, 98122 Messina, Italy;
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16
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Marine Terpenoids from Polar Latitudes and Their Potential Applications in Biotechnology. Mar Drugs 2020; 18:md18080401. [PMID: 32751369 PMCID: PMC7459527 DOI: 10.3390/md18080401] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 01/03/2023] Open
Abstract
Polar marine biota have adapted to thrive under one of the ocean’s most inhospitable scenarios, where extremes of temperature, light photoperiod and ice disturbance, along with ecological interactions, have selected species with a unique suite of secondary metabolites. Organisms of Arctic and Antarctic oceans are prolific sources of natural products, exhibiting wide structural diversity and remarkable bioactivities for human applications. Chemical skeletons belonging to terpene families are the most commonly found compounds, whereas cytotoxic antimicrobial properties, the capacity to prevent infections, are the most widely reported activities from these environments. This review firstly summarizes the regulations on access and benefit sharing requirements for research in polar environments. Then it provides an overview of the natural product arsenal from Antarctic and Arctic marine organisms that displays promising uses for fighting human disease. Microbes, such as bacteria and fungi, and macroorganisms, such as sponges, macroalgae, ascidians, corals, bryozoans, echinoderms and mollusks, are the main focus of this review. The biological origin, the structure of terpenes and terpenoids, derivatives and their biotechnological potential are described. This survey aims to highlight the chemical diversity of marine polar life and the versatility of this group of biomolecules, in an effort to encourage further research in drug discovery.
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17
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Shoberu A, Li C, Tao Z, Zhang G, Zou J. NaNO
2
/K
2
S
2
O
8
‐mediated Selective Radical Nitration/Nitrosation of Indoles: Efficient Approach to 3‐Nitro‐ and 3‐Nitrosoindoles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900070] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Adedamola Shoberu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical EngineeringSoochow University 199 Renai Street, Suzhou Jiangsu 215123 People's Republic of China
| | - Cheng‐Kun Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical EngineeringSoochow University 199 Renai Street, Suzhou Jiangsu 215123 People's Republic of China
| | - Ze‐Kun Tao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical EngineeringSoochow University 199 Renai Street, Suzhou Jiangsu 215123 People's Republic of China
| | - Guo‐Yu Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical EngineeringSoochow University 199 Renai Street, Suzhou Jiangsu 215123 People's Republic of China
| | - Jian‐Ping Zou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical EngineeringSoochow University 199 Renai Street, Suzhou Jiangsu 215123 People's Republic of China
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18
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Juárez-Ornelas KA, Jiménez-Halla JOC, Kato T, Solorio-Alvarado CR, Maruoka K. Iodine(III)-Catalyzed Electrophilic Nitration of Phenols via Non-Brønsted Acidic NO2+ Generation. Org Lett 2019; 21:1315-1319. [DOI: 10.1021/acs.orglett.8b04141] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kevin A. Juárez-Ornelas
- Universidad de Guanajuato, Campus Guanajuato,
División de Ciencias Naturales y Exactas, Departamento de Química,
Noria Alta S/N, 36050, Guanajuato, Guanajuato, México
| | - J. Oscar C. Jiménez-Halla
- Universidad de Guanajuato, Campus Guanajuato,
División de Ciencias Naturales y Exactas, Departamento de Química,
Noria Alta S/N, 36050, Guanajuato, Guanajuato, México
| | - Terumasa Kato
- Department of Chemistry, Graduate School of Sciences, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - César R. Solorio-Alvarado
- Universidad de Guanajuato, Campus Guanajuato,
División de Ciencias Naturales y Exactas, Departamento de Química,
Noria Alta S/N, 36050, Guanajuato, Guanajuato, México
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Sciences, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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19
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Mondal A, Tripathy RK, Dutta P, Santra MK, Isab AA, Bielawski CW, Kisan HK, Chandra SK, Dinda J. Ru(II)-based antineoplastic: A “wingtip” N-heterocyclic carbene facilitates access to a new class of organometallics that are cytotoxic to common cancer cell lines. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4692] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ambarish Mondal
- Department of Chemistry; Utkal University; Vani Bihar Bhubaneswar 751004 Odisha India
| | - Rajat K. Tripathy
- Department of Chemistry; Utkal University; Vani Bihar Bhubaneswar 751004 Odisha India
| | - Parul Dutta
- National Centre for Cell Science; Pune 411007 Maharastra India
| | | | - Anvarhusein A. Isab
- Department of Chemistry; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - Christopher W. Bielawski
- Center for Multidimensional Carbon Materials (CMCM); Institute for Basic Science (IBS); Ulsan 44919 Republic of Korea
- Department of Chemistry; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
- Department of Energy Engineering; Ulsan National Institute of Science and technology (UNIST); Ulsan 44919 Republic of Korea
| | - Hemanta K. Kisan
- Department of Chemistry; Utkal University; Vani Bihar Bhubaneswar 751004 Odisha India
| | - Swapan K. Chandra
- Department of Chemistry; Visva Bharati University; Santiniketan 731235 West Bengal India
| | - Joydev Dinda
- Department of Chemistry; Utkal University; Vani Bihar Bhubaneswar 751004 Odisha India
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20
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De Mol ML, Snoeck N, De Maeseneire SL, Soetaert WK. Hidden antibiotics: Where to uncover? Biotechnol Adv 2018; 36:2201-2218. [DOI: 10.1016/j.biotechadv.2018.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/05/2018] [Accepted: 10/15/2018] [Indexed: 01/21/2023]
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21
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Francisco da Silva A, João da Silva Filho A, Vasconcellos MLAA, Luís de Santana O. One-Electron Reduction Potentials: Calibration of Theoretical Protocols for Morita⁻Baylis⁻Hillman Nitroaromatic Compounds in Aprotic Media. Molecules 2018; 23:molecules23092129. [PMID: 30149493 PMCID: PMC6225277 DOI: 10.3390/molecules23092129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/09/2018] [Accepted: 08/11/2018] [Indexed: 11/17/2022] Open
Abstract
Nitroaromatic compounds—adducts of Morita–Baylis–Hillman (MBHA) reaction—have been applied in the treatment of malaria, leishmaniasis, and Chagas disease. The biological activity of these compounds is directly related to chemical reactivity in the environment, chemical structure of the compound, and reduction of the nitro group. Because of the last aspect, electrochemical methods are used to simulate the pharmacological activity of nitroaromatic compounds. In particular, previous studies have shown a correlation between the one-electron reduction potentials in aprotic medium (estimated by cyclic voltammetry) and antileishmanial activities (measured by the IC50) for a series of twelve MBHA. In the present work, two different computational protocols were calibrated to simulate the reduction potentials for this series of molecules with the aim of supporting the molecular modeling of new pharmacological compounds from the prediction of their reduction potentials. The results showed that it was possible to predict the experimental reduction potential for the calibration set with mean absolute errors of less than 25 mV (about 0.6 kcal·mol−1).
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22
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Chen J, Li J, Zhu L, Peng X, Feng Y, Lu Y, Hu X, Liang J, Zhao Q, Wang Z. Total synthesis and structure revision of chrysamide B. Org Chem Front 2018. [DOI: 10.1039/c8qo00949j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Total synthesis and structure revision of chrysamide B are described, the strategy features a convergent assembly of the chiral piperazine core and epoxy-acid.
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Affiliation(s)
- Jinhong Chen
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Junfang Li
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Longqing Zhu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Xue Peng
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Yiyue Feng
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Yingmei Lu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Xiaoling Hu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Jianpin Liang
- Key Laboratory of New Animal Drug Project of Gansu Province
- Key Laboratory of Veterinary Pharmaceutical Development
- Ministry of Agriculture
- Lanzhou
- Institute of Husbandry and Pharmaceutical Sciences of CAAS
| | - Quanyi Zhao
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
| | - Zhen Wang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- China
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23
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Kącka-Zych A, Domingo LR, Ríos-Gutiérrez M, Jasiński R. Understanding the mechanism of the decomposition reaction of nitroethyl benzoate through the Molecular Electron Density Theory. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2161-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Secondary Metabolites from Polar Organisms. Mar Drugs 2017; 15:md15030028. [PMID: 28241505 PMCID: PMC5367009 DOI: 10.3390/md15030028] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 01/11/2023] Open
Abstract
Polar organisms have been found to develop unique defences against the extreme environment environment, leading to the biosynthesis of novel molecules with diverse bioactivities. This review covers the 219 novel natural products described since 2001, from the Arctic and the Antarctic microoganisms, lichen, moss and marine faunas. The structures of the new compounds and details of the source organism, along with any relevant biological activities are presented. Where reported, synthetic and biosynthetic studies on the polar metabolites have also been included.
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25
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Pinzón-Espinosa A, Martinez-Matamoros D, Castellanos L, Duque C, Rodríguez J, Jiménez C, Ramos FA. Cereusitin A, a cyclic tetrapeptide from a Bacillus cereus strain isolated from the soft coral Antillogorgia (syn. Pseudopterogorgia) elisabethae. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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26
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Abstract
This is an update report on marine natural products isolated from cold-water organisms in the last decade, following the previous review that covered the literature up to 2005. Emphasis is on structural assignments and biological activity.
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Affiliation(s)
- Sylvia Soldatou
- School of Chemistry
- National University of Ireland
- Galway
- Ireland
- Department of Chemistry
| | - Bill J. Baker
- School of Chemistry
- National University of Ireland
- Galway
- Ireland
- Department of Chemistry
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27
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Shafi S, Afrin F, Islamuddin M, Chouhan G, Ali I, Naaz F, Sharma K, Zaman MS. β-Nitrostyrenes as Potential Anti-leishmanial Agents. Front Microbiol 2016; 7:1379. [PMID: 27635124 PMCID: PMC5007854 DOI: 10.3389/fmicb.2016.01379] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 08/19/2016] [Indexed: 12/20/2022] Open
Abstract
Development of new therapeutic approach to treat leishmaniasis has become a priority. In the present study, the antileishmanial effect of β-nitrostyrenes was investigated against in vitro promastigotes and amastigotes. A series of β-nitrostyrenes have been synthesized by using Henry reaction and were evaluated for their antimicrobial activities by broth microdilution assay and in vitro antileishmanial activities against Leishmania donovani promastigotes by following standard guidelines. The most active compounds were futher evaluated for their in vitro antileishmanial activities against intracellular amastigotes. Among the tested β-nitrostyrenes, compounds 7, 8, 9, 12, and 17 exhibited potential activities (MICs range, 0.25–8 μg/mL) against clinically significant human pathogenic fungi. However, the microbactericidal concentrations (MBCs) and the microfungicidal concentrations (MFCs) were found to be either similar or only two-fold greater than the MICs. Anti-leishmanial results demonstrated that compounds 9, 12, 14, and 18 were found to be most active among the tested samples and exhibited 50% inhibitory concentration (IC50) by 23.40 ± 0.71, 37.83 ± 3.74, 40.50 ± 1.47, 55.66 ± 2.84 nM against L. donovani promastigotes and 30.5 ± 3.42, 21.46 ± 0.96, 26.43 ± 2.71, and 61.63 ± 8.02 nM respectively against intracellular L. donovani promastigotes amastigotes respectively which are comparable with standard AmB (19.60 ± 1.71 nM against promastigotes and 27.83 ± 3.26 nM against amastigotes). Compounds 9, 12, 14, and 18 were found to have potent in vitro leishmanicidal activity against L. donovani and found to be non-toxic against mammalian macrophages even at a concentration of 25 μM. Nitric oxide (NO) estimation studies reveals that these compounds are moderately inducing NO levels.
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Affiliation(s)
- Syed Shafi
- Medicinal Chemistry Lab, Department of Chemistry, Faculty of Science, Hamdard University New Delhi, India
| | - Farhat Afrin
- Department of Medical Laboratories Technology, Faculty of Applied Medical Sciences, Taibah UniversityMedina, Saudi Arabia; Parasite Immunology Lab, Department of Biotechnology, Faculty of Science, Hamdard UniversityNew Delhi, India
| | - Mohammad Islamuddin
- Parasite Immunology Lab, Department of Biotechnology, Faculty of Science, Hamdard UniversityNew Delhi, India; Molecular Virology and Vaccinology Lab, Department of Biotechnology, Faculty of Science, Hamdard UniversityNew Delhi, India
| | - Garima Chouhan
- Parasite Immunology Lab, Department of Biotechnology, Faculty of Science, Hamdard University New Delhi, India
| | - Intzar Ali
- Membrane Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University New Delhi, India
| | - Faatima Naaz
- Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard New Delhi, India
| | - Kalicharan Sharma
- Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard New Delhi, India
| | - Mohammad S Zaman
- Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard New Delhi, India
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Kącka AB, Jasiński RA. A density functional theory mechanistic study of thermal decomposition reactions of nitroethyl carboxylates: undermine of “pericyclic” insight. HETEROATOM CHEMISTRY 2016. [DOI: 10.1002/hc.21326] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Agnieszka B. Kącka
- Institute of Organic Chemistry and Technology; Cracow University of Technology; Cracow Poland
| | - Radomir A. Jasiński
- Institute of Organic Chemistry and Technology; Cracow University of Technology; Cracow Poland
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29
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Chen S, Wang J, Lin X, Zhao B, Wei X, Li G, Kaliaperumal K, Liao S, Yang B, Zhou X, Liu J, Xu S, Liu Y. Chrysamides A–C, Three Dimeric Nitrophenyl trans-Epoxyamides Produced by the Deep-Sea-Derived Fungus Penicillium chrysogenum SCSIO41001. Org Lett 2016. [DOI: 10.1021/acs.orglett.6b01699 pmid: 274400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengtian Chen
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Junfeng Wang
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xiuping Lin
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bingxin Zhao
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Xiaoyi Wei
- Key
Laboratory of Plant Conservation and Sustainable Utilization, South
China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Guangqiang Li
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Kumaravel Kaliaperumal
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Shengrong Liao
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bin Yang
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xuefeng Zhou
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Juan Liu
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Shihai Xu
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Yonghong Liu
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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30
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Chen S, Wang J, Lin X, Zhao B, Wei X, Li G, Kaliaperumal K, Liao S, Yang B, Zhou X, Liu J, Xu S, Liu Y. Chrysamides A–C, Three Dimeric Nitrophenyl trans-Epoxyamides Produced by the Deep-Sea-Derived Fungus Penicillium chrysogenum SCSIO41001. Org Lett 2016; 18:3650-3. [DOI: 10.1021/acs.orglett.6b01699] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shengtian Chen
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Junfeng Wang
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xiuping Lin
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bingxin Zhao
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Xiaoyi Wei
- Key
Laboratory of Plant Conservation and Sustainable Utilization, South
China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Guangqiang Li
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Kumaravel Kaliaperumal
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Shengrong Liao
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bin Yang
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xuefeng Zhou
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Juan Liu
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Shihai Xu
- Department
of Chemistry, Jinan University, Guangzhou 510632, China
| | - Yonghong Liu
- CAS
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong
Key Laboratory of Marine Matria Medica/RNAM Center for Marine Microbiology,
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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31
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Mazimba O, Wale K, Loeto D, Kwape T. Antioxidant and antimicrobial studies on fused-ring pyrazolones and isoxazolones. Bioorg Med Chem 2015; 22:6564-6569. [PMID: 25456077 DOI: 10.1016/j.bmc.2014.10.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/03/2014] [Accepted: 10/13/2014] [Indexed: 10/24/2022]
Abstract
A series of 3-nitrochalcones have been synthesized enroute towards fused ring pyrazolones and isoxazolones. Base catalyzed condensation of the chalcones with ethylacetoacetate yielded cyclohexenones in good yields (74-76%). The treatment of cyclohexenones with hydrazine hydrate or hydroxylamine chloride in the presence of a base afforded the corresponding fused-ring pyrazolinones (70-78% yield) and isoxazolinones (58-66% yield). The newly synthesized compounds were characterized by IR, 1D and 2D NMR and HRMS spectral analysis. The compounds were screened for their antioxidant and antimicrobial activities. Pyrazolinones showed good DPPH radical scavenging and iron metal chelating properties. The para-hydroxy group was important for a compound to have enhanced antioxidant activity. Pyrazolinones and isoxazolinone exhibited a wider range of antimicrobial activities compared to cyclohexenones. Pyrazolinones and isoxazolinone bearing a thiophene ring were the most potent type of compounds against Bacillus subtilis and Candida albicans with MIC values of 0.313-1.25 μg/mL. Some of the synthesized compounds were found to have promising antioxidant, metal chelation and antimicrobial activities.
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Affiliation(s)
- Ofentse Mazimba
- Botswana Institute for Technology Research and Innovation, Private Bag 0082, Gaborone, Botswana.
| | - Kabo Wale
- Department of Biological Sciences, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Daniel Loeto
- Department of Biological Sciences, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Tebogo Kwape
- Department of Biological Sciences, University of Botswana, Private Bag 00704, Gaborone, Botswana
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32
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Zhou J, He H, Wang X, Lu J, Zhou X, Cai M, Zhang Y. Optimization of nutrients for dinactin production by a marine Streptomyces sp. from the high latitude Arctic. BIOTECHNOL BIOPROC E 2015. [DOI: 10.1007/s12257-015-0050-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Deng GB, Zhang JL, Liu YY, Liu B, Yang XH, Li JH. Metal-free nitrative cyclization of N-aryl imines with tert-butyl nitrite: dehydrogenative access to 3-nitroindoles. Chem Commun (Camb) 2015; 51:1886-8. [DOI: 10.1039/c4cc08498e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel metal-free oxidative C–H functionalization and nitrative cyclization access to 3-nitroindoles from N-aryl imines is described.
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Affiliation(s)
- Guo-Bo Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- China
| | - Jia-Ling Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- China
| | - Yan-Yun Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- China
| | - Bang Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- China
| | - Xu-Heng Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- China
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34
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A novel 3α-p-Nitrobenzoylmultiflora-7:9(11)-diene-29-benzoate and two new triterpenoids from the seeds of zucchini (Cucurbita pepo L). Molecules 2013; 18:7448-59. [PMID: 23803716 PMCID: PMC6269766 DOI: 10.3390/molecules18077448] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 06/21/2013] [Accepted: 06/21/2013] [Indexed: 11/29/2022] Open
Abstract
Three novel multiflorane-type triterpenoids, 3α-p-nitrobenzoylmultiflora-7:9(11)-diene-29-benzoate (1), 3α-acetoxymultiflora-7:9(11)-diene-29-benzoate (2), and 3α-acetoxymultiflora-5(6):7:9(11)-triene-29-benzoate (3), along with two known related compounds 4 and 5 were isolated from the seeds of zucchini (Cucurbita pepo L). Their structures were determined on the basis of 1D and 2D NMR spectroscopy and HREIMS. Triterpenoids possessing a nitro group were not isolated previously.
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35
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Shaaban M, Shaaban KA, Abdel-Aziz MS. Seven naphtho-γ-pyrones from the marine-derived fungus Alternaria alternata: structure elucidation and biological properties. Org Med Chem Lett 2012; 2:6. [PMID: 22377027 PMCID: PMC3350997 DOI: 10.1186/2191-2858-2-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 02/29/2012] [Indexed: 12/03/2022] Open
Abstract
Eight bioactive pyrone derivatives were identified from the culture of Alternaria alternata strain D2006, isolated from the marine soft coral Denderonephthya hemprichi, which was selected as its profound antimicrobial activities. The compounds were assigned as pyrophen (1), rubrofusarin B (2), fonsecin (3), and fonsecin B (5) beside to the four dimeric naphtho-γ-pyrones; aurasperone A (6), aurasperone B (7), aurasperone C (8), and aurasperone F (9). Structures of the isolated compounds were identified on the basis of 1D and 2D NMR spectroscopy and mass (EI, ESI, HRESI) data, and by comparison with the literature. Configuration of the four dimeric naphtho-γ-pyrones 6-9 was analyzed by CD spectra, exhibiting an identical stereochemistry.
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Affiliation(s)
- Mohamed Shaaban
- Chemistry of Natural Compounds Department, Pharmaceutical Industries Division, National Research Centre, El-Behoos St., Dokki-Cairo 12622, Egypt
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
| | - Khaled A Shaaban
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
| | - Mohamed S Abdel-Aziz
- Department of Microbial Chemistry, Genetic Engineering and Biotechnology Division, National Research Centre, El-Behoos St., Dokki-Cairo 12622, Egypt
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36
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Wide distribution of closely related, antibiotic-producing Arthrobacter strains throughout the Arctic Ocean. Appl Environ Microbiol 2012; 78:2039-42. [PMID: 22247128 DOI: 10.1128/aem.07096-11] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We isolated 16 antibiotic-producing bacterial strains throughout the central Arctic Ocean, including seven Arthrobacter spp. with almost identical 16S rRNA gene sequences. These strains were numerically rare, as revealed using 454 pyrosequencing libraries. Arthrobacter spp. produced arthrobacilins A to C under different culture conditions, but other, unidentified compounds likely contributed to their antibiotic activity.
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Stokes BJ, Liu S, Driver TG. Rh2(II)-catalyzed nitro-group migration reactions: selective synthesis of 3-nitroindoles from β-nitro styryl azides. J Am Chem Soc 2011; 133:4702-5. [PMID: 21401042 DOI: 10.1021/ja111060q] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rhodium carboxylate complexes (1 mol %) catalyze the migration of electron-withdrawing groups to selectively produce 3-substituted indoles from β-substituted styryl azides. The relative order of migratorial aptitude for this transformation is ester ≪ amide < H < sulfonyl < benzoyl ≪ nitro.
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Affiliation(s)
- Benjamin J Stokes
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA
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Aqabamycins A-G: novel nitro maleimides from a marine Vibrio species. I. Taxonomy, fermentation, isolation and biological activities. J Antibiot (Tokyo) 2010; 63:297-301. [PMID: 20431617 DOI: 10.1038/ja.2010.34] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In a screening of marine bacteria, a Vibrio species isolated from the surface of the soft coral Sinularia polydactyla collected in the Red Sea was found to be a prolific producer of secondary metabolites with antibacterial and cytotoxic activities. Seven novel maleimide derivatives named aqabamycin A (1a), aqabamycin B (1b), aqabamycin C (1c), aqabamycin D (1d), aqabamycin E (1e and 1e'), aqabamycin F (1f) and aqabamycin G (2) were isolated together with several known metabolites such as 3-nitro-1H-indazole (3), indazole-3-carbaldehyde (4), phenyl-2-bis-indolylmethane (5a), turbomycin B (5b), vibrindole A (6), 1,4-dithiane (7), 3-(3-nitro-4-hydroxyphenyl)-2-propenoic acid (8), 3-nitro-4-hydroxybenzaldehyde (9), phenylacetic acid, benzoic acid, 3-hydroxybenzoic acid and 4-hydroxycinnamic acid. The aqabamycins, except aqabamycin A, bear a nitro group. Compounds 3, 4, 7 are described here for the first time from a natural source and vibrindole A was found to have cytotoxic activity.
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Nitro derivatives from the Arctic ice bacterium Salegentibacter sp. isolate T436. J Antibiot (Tokyo) 2009; 62:453-60. [DOI: 10.1038/ja.2009.71] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Park HB, Kwon HC, Lee CH, Yang HO. Glionitrin A, an antibiotic-antitumor metabolite derived from competitive interaction between abandoned mine microbes. JOURNAL OF NATURAL PRODUCTS 2009; 72:248-252. [PMID: 19159274 DOI: 10.1021/np800606e] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The nutrient conditions present in abandoned coal mine drainages create an extreme environment where defensive and offensive microbial interactions could be critical for survival and fitness. Coculture of a mine drainage-derived Sphingomonas bacterial strain, KMK-001, and a mine drainage-derived Aspergillus fumigatus fungal strain, KMC-901, resulted in isolation of a new diketopiperazine disulfide, glionitrin A (1). Compound 1 was not detected in monoculture broths of KMK-001 or KMC-901. The structure of 1, a (3S,10aS) diketopiperazine disulfide containing a nitro aromatic ring, was based on analysis of MS, NMR, and circular dichroism spectra and confirmed by X-ray crystal data. Glionitrin A displayed significant antibiotic activity against a series of microbes including methicillin-resistant Staphylococcus aureus. An in vitro MTT cytotoxicity assay revealed that 1 had potent submicromolar cytotoxic activity against four human cancer cell lines: HCT-116, A549, AGS, and DU145. The results provide further evidence that microbial coculture can produce novel biologically relevant molecules.
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Affiliation(s)
- Hyun Bong Park
- Natural Products Research Center, Korea Institute of Science and Technology, Gangneung, Gangwon-do 210-340, Republic of Korea
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42
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Blunt JW, Copp BR, Hu WP, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2009; 26:170-244. [PMID: 19177222 DOI: 10.1039/b805113p] [Citation(s) in RCA: 410] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review covers the literature published in 2007 for marine natural products, with 948 citations(627 for the period January to December 2007) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, cnidarians,bryozoans, molluscs, tunicates, echinoderms and true mangrove plants. The emphasis is on new compounds (961 for 2007), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.1 Introduction, 2 Reviews, 3 Marine microorganisms and phytoplankton, 4 Green algae, 5 Brown algae, 6 Red algae, 7 Sponges, 8 Cnidarians, 9 Bryozoans, 10 Molluscs, 11 Tunicates (ascidians),12 Echinoderms, 13 Miscellaneous, 14 Conclusion, 15 References.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Krohn K, Kouam SF, Cludius-Brandt S, Draeger S, Schulz B. Bioactive Nitronaphthalenes from an Endophytic Fungus,Coniothyriumsp., and Their Chemical Synthesis. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800255] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Al-Zereini W, Schuhmann I, Laatsch H, Helmke E, Anke H. New Aromatic Nitro Compounds from Salegentibacter sp. T436, an Arctic Sea Ice Bacterium: Taxonomy, Fermentation, Isolation and Biological Activities. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/chin.200746195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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