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Sankara CS, Namboothiri INN. Hauser-Kraus Annulation Initiated Multi-Cascade Reactions for Facile Access to Functionalized and Fused Oxazepines, Carbazoles and Phenanthridinediones. Chemistry 2024; 30:e202303517. [PMID: 37946675 DOI: 10.1002/chem.202303517] [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: 11/01/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/12/2023]
Abstract
The Hauser-Kraus (H-K) annulation of N-unsubstituted 3-olefinic oxindoles with 3-nucleophilic phthalides triggers a cascade of ring expansion and ring contraction reactions through several regioselective steps in one pot. While oxazepines were isolated in the presence of stoichiometric amounts of base at room temperature, carbazoles and phenanthridinediones were the products in the presence of excess base and microwave irradiation. Mechanistic studies guided by stepwise reactions and control experiments revealed that the isolable oxazepine intermediate, formed via ring expansion of the H-K adduct, is the key precursor to carbazole and phenanthridinedione via decarboxylative regioselective cyclizations.
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2
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Krishnan A, Kamaraj S. Direct Access to Quinone-Fused 5-Substituted-1,4-Benzodiazepine Scaffolds from Azidoquinones with/without [1,2]-Azide-Nitrogen Migration: Mechanistic Insights. J Org Chem 2023; 88:16315-16329. [PMID: 37966974 DOI: 10.1021/acs.joc.3c01810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Seven-membered nitrogen heterocycles have a strong influence in drug discovery due to their inherent 3D character, which allows the ability to explore a vast conformational space with a biological target. Notably, the privileged 1,4-benzodiazepine scaffold is dominant in treating the central nervous system due to its binding affinity with the GABAA receptor. Herein, we report a protocol for the transformation of azidoquinones to p-quinone fused 5-substituted-1,4-benzodiazepines (p-QBZDs) from InCl3-catalyzed intermolecular tandem cycloannulation of azidoquinones with amines and aldehydes. Detailed mechanistic studies reveal that the EDA complex between azidoquinones and InCl3 is crucial in determining the reaction pathway. In the absence of EDA complex formation, the reaction proceeds via the intermediacy of 2,3-bridged-2H-azirine followed by regiospecific addition of an amine to C═N/ring opening/cyclization to deliver p-QBZD with 1,2-azide-nitrogen migration. In the case of EDA complex formation, the reaction proceeds through regioselective aza-Michael addition/nitrene insertion with aldehyde and subsequent cyclization to deliver p-QBZD and p-quinone fused imidazole as a secondary product without 1,2-azide-nitrogen migration. This protocol provides straightforward access to redox-active quinone embedded 5-substituted-1,4-benzodiazepines from azidoquinones with diverse substrate scopes that would find potential applications in medicinal chemistry and drug discovery.
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Affiliation(s)
- Ashokkumar Krishnan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Sriraghavan Kamaraj
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
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3
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Wei W, Cheung KK, Lin R, Kong LC, Chan KL, Sung HHY, Williams ID, Tong R, Lin Z, Jia G. [2+2+1+1] Cycloaddition for de novo Synthesis of Densely Functionalized Phenols. Angew Chem Int Ed Engl 2023; 62:e202307251. [PMID: 37428447 DOI: 10.1002/anie.202307251] [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: 05/23/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/11/2023]
Abstract
A unique benzannulation strategy for regioselective de novo synthesis of densely functionalized phenols is described. Through metal-mediated formal [2+2+1+1] cycloaddition of two different alkynes and two molecules of CO, a series of densely functionalized phenols were obtained. The benzannulation strategy allows efficient regioselective installation up to five different substituents on a phenol ring. The resulting phenols have a substitution pattern different from those obtained from Dötz and Danheiser benzannulations.
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Affiliation(s)
- Wei Wei
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ka Key Cheung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ran Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education), College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Lam Cheung Kong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ka Lok Chan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Herman H Y Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ian D Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Rongbiao Tong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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4
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Kar J, Ramrao DP, Zomuansangi R, Lalbiaktluangi C, Singh SM, Joshi NC, Kumar A, Kaushalendra, Mehta S, Yadav MK, Singh PK. Revisiting the role of cyanobacteria-derived metabolites as antimicrobial agent: A 21st century perspective. Front Microbiol 2022; 13:1034471. [PMID: 36466636 PMCID: PMC9717611 DOI: 10.3389/fmicb.2022.1034471] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/18/2022] [Indexed: 11/23/2023] Open
Abstract
Cyanobacterial species are ancient photodiazotrophs prevalent in freshwater bodies and a natural reservoir of many metabolites (low to high molecular weight) such as non-ribosomal peptides, polyketides, ribosomal peptides, alkaloids, cyanotoxins, and isoprenoids with a well-established bioactivity potential. These metabolites enable cyanobacterial survival in extreme environments such as high salinity, heavy metals, cold, UV-B, etc. Recently, these metabolites are gaining the attention of researchers across the globe because of their tremendous applications as antimicrobial agents. Many reports claim the antimicrobial nature of these metabolites; unfortunately, the mode of action of such metabolites is not well understood and/or known limited. Henceforth, this review focuses on the properties and potential application, also critically highlighting the possible mechanism of action of these metabolites to offer further translational research. The review also aims to provide a comprehensive insight into current gaps in research on cyanobacterial biology as antimicrobials and hopes to shed light on the importance of continuing research on cyanobacteria metabolites in the search for novel antimicrobials.
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Affiliation(s)
- Joyeeta Kar
- Department of Biotechnology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
| | - Devde Pandurang Ramrao
- Department of Biotechnology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
| | - Ruth Zomuansangi
- Department of Biotechnology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
| | - C. Lalbiaktluangi
- Department of Biotechnology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
| | - Shiv Mohan Singh
- Centre of Advanced Studies in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Naveen Chandra Joshi
- Amity Institute of Microbial Technology (AIMT), Amity University, Noida, Uttar Pradesh, India
| | - Ajay Kumar
- Agriculture Research Organization (ARO) - The Volcani Center, Rishon LeZion, Israel
| | - Kaushalendra
- Department of Zoology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
| | | | - Mukesh Kumar Yadav
- Department of Biotechnology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
| | - Prashant Kumar Singh
- Department of Biotechnology, Mizoram University (A Central University), Pachhunga University College Campus, Aizawl, Mizoram, India
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Sugumaran A, Pandiyan R, Kandasamy P, Antoniraj MG, Navabshan I, Sakthivel B, Dharmaraj S, Chinnaiyan SK, Ashokkumar V, Ngamcharussrivichai C. Marine biome-derived secondary metabolites, a class of promising antineoplastic agents: A systematic review on their classification, mechanism of action and future perspectives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155445. [PMID: 35490806 DOI: 10.1016/j.scitotenv.2022.155445] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/10/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Cancer is one of the most deadly diseases on the planet. Over the past decades, numerous antineoplastic compounds have been discovered from natural resources such as medicinal plants and marine species as part of multiple drug discovery initiatives. Notably, several marine flora (e.g. Ascophyllum nodosum, Sargassum thunbergii) have been identified as a rich source for novel cytotoxic compounds of different chemical forms. Despite the availability of enormous chemically enhanced new resources, the anticancer potential of marine flora and fauna has received little attention. Interestingly, numerous marine-derived secondary metabolites (e.g., Cytarabine, Trabectedin) have exhibited anticancer effects in preclinical cancer models. Most of the anticancer drugs obtained from marine sources stimulated apoptotic signal transduction pathways in cancer cells, such as the intrinsic and extrinsic pathways. This review highlights the sources of different cytotoxic secondary metabolites obtained from marine bacteria, algae, fungi, invertebrates, and vertebrates. Furthermore, this review provides a comprehensive overview of the utilisation of numerous marine-derived cytotoxic compounds as anticancer drugs, as well as their modes of action (e.g., molecular target). Finally, it also discusses the future prospects of marine-derived drug developments and their constraints.
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Affiliation(s)
- Abimanyu Sugumaran
- Department of Pharmaceutics, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur 603203, India
| | - Rajesh Pandiyan
- Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher Education and Research, Selaiyur, Chennai 600073, India
| | - Palanivel Kandasamy
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension, Inselspital, University of Bern, Bern, Switzerland; Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Mariya Gover Antoniraj
- Department of Clinical Biochemistry & Pharmacology, Faculty of Health Science, Ben-Gurion University of Negev, Israel
| | - Irfan Navabshan
- Crescent School of Pharmacy, B.S. Abdur Rahman Cresent Institute of Science and Technology, Chennai, India
| | | | - Selvakumar Dharmaraj
- Department of Marine Biotechnology, Academy of Maritime Education and Training [AMET] (Deemed to be University), Chennai 603112, Tamil Nadu, India
| | - Santhosh Kumar Chinnaiyan
- Department of Pharmaceutics, Srikrupa Institute of Pharmaceutical Sciences, Velikatta, Kondapak, Siddipet, Telangana State 502277, India.
| | - Veeramuthu Ashokkumar
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, India; Center of Excellence in Catalysis for Bioenergy and Renewable Chemicals (CBRC), Faculty of Science, Chulalongkorn University, Pathum Wan, Bangkok 10330, Thailand.
| | - Chawalit Ngamcharussrivichai
- Center of Excellence in Catalysis for Bioenergy and Renewable Chemicals (CBRC), Faculty of Science, Chulalongkorn University, Pathum Wan, Bangkok 10330, Thailand
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Shahid A, Khurshid M, Aslam B, Muzammil S, Mehwish HM, Rajoka MSR, Hayat HF, Sarfraz MH, Razzaq MK, Nisar MA, Waseem M. Cyanobacteria derived compounds: Emerging drugs for cancer management. J Basic Microbiol 2021; 62:1125-1142. [PMID: 34747529 DOI: 10.1002/jobm.202100459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/11/2021] [Accepted: 10/22/2021] [Indexed: 11/06/2022]
Abstract
The wide diversity of cyanobacterial species and their role in a variety of biological activities have been reported in the previous few years. Cyanobacteria, especially from marine sources, constitutes a major source of biologically active metabolites that have gained great attention especially due to their anticancer potential. Numerous chemically diverse metabolites from various cyanobacterial species have been recognized to inhibit the growth and progression of tumor cells through the induction of apoptosis in many different types of cancers. These metabolites activate the apoptosis in the cancer cells by different molecular mechanisms, however, the dysregulation of the mitochondrial pathway, death receptors signaling pathways, and the activation of several caspases are the crucial mechanisms that got considerable interest. The array of metabolites and the range of mechanisms involved may also help to overcome the resistance acquired by the different tumor types against the ongoing therapeutic agents. Therefore, the primary or secondary metabolites from the cyanobacteria as well as their synthetic derivates could be used to develop novel anticancer drugs alone or in combination with other chemotherapeutic agents. In this study, we have discussed the role of cyanobacterial metabolites in the induction of cytotoxicity and the potential to inhibit the growth of cancer cells through the induction of apoptosis, cell signaling alteration, oxidative damage, and mitochondrial dysfunctions. Moreover, the various metabolites produced by cyanobacteria have been summarized with their anticancer mechanisms. Furthermore, the ongoing trials and future developments for the therapeutic implications of these compounds in cancer therapy have been discussed.
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Affiliation(s)
- Aqsa Shahid
- Faculty of Rehabilitation and Allied Health Sciences, Riphah International University, Faisalabad, Pakistan
| | - Mohsin Khurshid
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Bilal Aslam
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Saima Muzammil
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | | | - Muhammad Shahid Riaz Rajoka
- School of Basic Medicine, Health Science Center, Shenzhen University, Shenzhen, China.,Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Hafiz Fakhar Hayat
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | | | - Muhammad Khuram Razzaq
- Soybean Research Institute, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, China
| | - Muhammad Atif Nisar
- Department of Microbiology, Government College University, Faisalabad, Pakistan.,College of Science and Engineering, Flinders University, Bedford Park, Australia
| | - Muhammad Waseem
- Department of Microbiology, Government College University, Faisalabad, Pakistan
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7
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Das A, Thakur S, Das T. Indole‐2‐Carboxaldehyde: An Emerging Precursor for the Construction of Diversified Imperative Skeleton. ChemistrySelect 2021. [DOI: 10.1002/slct.202100695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Arunima Das
- Department of Chemistry, NIT Jamshedpur Jamshedpur 831014 India
| | - Seema Thakur
- Department of Chemistry, NIT Jamshedpur Jamshedpur 831014 India
| | - Tapas Das
- Department of Chemistry, NIT Jamshedpur Jamshedpur 831014 India
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8
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Deng C, Liu Y, Xu M, Xie K, Liu S. Exploiting an intramolecular Diels-Alder cyclization/dehydro-aromatization sequence for the total syntheses of ellipticines and calothrixin B. Org Biomol Chem 2021; 19:1395-1403. [PMID: 33491728 DOI: 10.1039/d0ob02527e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The tetracyclic and pentacyclic skeletons of pyrido and quinolinocarbazole alkaloids have been synthesized via a unified strategy. The prominent key step involved a Diels-Alder intramolecular cyclization/dehydro-aromatization sequence. From these carbazole-lactam cores, linear syntheses have been developed for ellipticines and calothrixin B.
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Affiliation(s)
- Chengdan Deng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China. and Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang 550014, China.
| | - Yuancui Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China. and Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang 550014, China.
| | - Mei Xu
- Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang 550014, China.
| | - Kaiqiang Xie
- Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang 550014, China.
| | - Sheng Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China. and Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang 550014, China.
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9
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Qamar H, Hussain K, Soni A, Khan A, Hussain T, Chénais B. Cyanobacteria as Natural Therapeutics and Pharmaceutical Potential: Role in Antitumor Activity and as Nanovectors. Molecules 2021; 26:E247. [PMID: 33466486 PMCID: PMC7796498 DOI: 10.3390/molecules26010247] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/21/2022] Open
Abstract
Cyanobacteria (blue-green microalgae) are ubiquitous, Gram-negative photoautotrophic prokaryotes. They are considered as one of the most efficient sources of bioactive secondary metabolites. More than 50% of cyanobacteria are cultivated on commercial platforms to extract bioactive compounds, which have bene shown to possess anticancer activity. The chemically diverse natural compounds or their analogues induce cytotoxicity and potentially kill a variety of cancer cells via the induction of apoptosis, or altering the activation of cell signaling, involving especially the protein kinase-C family members, cell cycle arrest, mitochondrial dysfunctions and oxidative damage. These therapeutic properties enable their use in the pharma and healthcare sectors for the betterment of future generations. This review provides a baseline overview of the anti-cancerous cyanobacterial bioactive compounds, along with recently introduced nanomaterials that could be used for the development of new anticancer drugs to build a healthy future for mankind.
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Affiliation(s)
- Hina Qamar
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India;
| | - Kashif Hussain
- Pharmacy Section, Gyani Inder Singh Institute of Professional Studies, Dehradun 248003, India;
- School of Pharmacy, Glocal University, Saharanpur 247121, India
| | - Aishwarya Soni
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat 124001, India;
| | - Anish Khan
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak 124001, India;
| | - Touseef Hussain
- Department of Botany, Aligarh Muslim University, Aligarh 202002, India
| | - Benoît Chénais
- EA 2160 Mer Molécules Santé, Le Mans Université, F-72085 Le Mans, France
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10
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Carpine R, Sieber S. Antibacterial and antiviral metabolites from cyanobacteria: Their application and their impact on human health. CURRENT RESEARCH IN BIOTECHNOLOGY 2021. [DOI: 10.1016/j.crbiot.2021.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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11
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Liu Y, Xu M, Xie K, Liu S. Total Synthesis of Calothrixin B
via
an Intramolecular Baylis‐Hillman Cyclization/6π Electrocyclization/Dehydro‐aromatization Sequence and a Specific Oxidative Quinone Formation. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuancui Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 PR China
| | - Mei Xu
- Key Laboratory of Chemistry for Natural Products of Guizhou Province Chinese Academy of Sciences Guiyang 550014 China
| | - Kaiqiang Xie
- Key Laboratory of Chemistry for Natural Products of Guizhou Province Chinese Academy of Sciences Guiyang 550014 China
| | - Sheng Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 PR China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province Chinese Academy of Sciences Guiyang 550014 China
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13
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Mondal A, Bose S, Banerjee S, Patra JK, Malik J, Mandal SK, Kilpatrick KL, Das G, Kerry RG, Fimognari C, Bishayee A. Marine Cyanobacteria and Microalgae Metabolites-A Rich Source of Potential Anticancer Drugs. Mar Drugs 2020; 18:E476. [PMID: 32961827 PMCID: PMC7551136 DOI: 10.3390/md18090476] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/09/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023] Open
Abstract
Cancer is at present one of the utmost deadly diseases worldwide. Past efforts in cancer research have focused on natural medicinal products. Over the past decades, a great deal of initiatives was invested towards isolating and identifying new marine metabolites via pharmaceutical companies, and research institutions in general. Secondary marine metabolites are looked at as a favorable source of potentially new pharmaceutically active compounds, having a vast structural diversity and diverse biological activities; therefore, this is an astonishing source of potentially new anticancer therapy. This review contains an extensive critical discussion on the potential of marine microbial compounds and marine microalgae metabolites as anticancer drugs, highlighting their chemical structure and exploring the underlying mechanisms of action. Current limitation, challenges, and future research pathways were also presented.
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Affiliation(s)
- Arijit Mondal
- Department of Pharmaceutical Chemistry, Bengal College of Pharmaceutical Technology, Dubrajpur 731 123, West Bengal, India
| | - Sankhadip Bose
- Department of Pharmacognosy, Bengal School of Technology, Chuchura 712 102, West Bengal, India;
| | - Sabyasachi Banerjee
- Department of Phytochemistry, Gupta College of Technological Sciences, Asansol 713 301, West Bengal, India;
| | - Jayanta Kumar Patra
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Goyang-si 10326, Korea; (J.K.P.); (G.D.)
| | - Jai Malik
- Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Punjab University, Chandigarh 160 014, Punjab, India;
| | - Sudip Kumar Mandal
- Department of Pharmaceutical Chemistry, Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Durgapur 713 206, West Bengal, India;
| | | | - Gitishree Das
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Goyang-si 10326, Korea; (J.K.P.); (G.D.)
| | - Rout George Kerry
- Post Graduate Department of Biotechnology, Utkal University, Bhubaneswar 751 004, Odisha, India;
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum-Università di Bologna, 47921 Rimini, Italy
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA;
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14
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Matulja D, Wittine K, Malatesti N, Laclef S, Turks M, Markovic MK, Ambrožić G, Marković D. Marine Natural Products with High Anticancer Activities. Curr Med Chem 2020; 27:1243-1307. [PMID: 31931690 DOI: 10.2174/0929867327666200113154115] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/03/2019] [Accepted: 12/15/2019] [Indexed: 12/13/2022]
Abstract
This review covers recent literature from 2012-2019 concerning 170 marine natural products and their semisynthetic analogues with strong anticancer biological activities. Reports that shed light on cellular and molecular mechanisms and biological functions of these compounds, thus advancing the understanding in cancer biology are also included. Biosynthetic studies and total syntheses, which have provided access to derivatives and have contributed to the proper structure or stereochemistry elucidation or revision are mentioned. The natural compounds isolated from marine organisms are divided into nine groups, namely: alkaloids, sterols and steroids, glycosides, terpenes and terpenoids, macrolides, polypeptides, quinones, phenols and polyphenols, and miscellaneous products. An emphasis is placed on several drugs originating from marine natural products that have already been marketed or are currently in clinical trials.
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Affiliation(s)
- Dario Matulja
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Karlo Wittine
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Nela Malatesti
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Sylvain Laclef
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France
| | - Maris Turks
- Faculty of Material Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, Riga, LV-1007, Latvia
| | - Maria Kolympadi Markovic
- Department of Physics, and Center for Micro- and Nanosciences and Technologies, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Gabriela Ambrožić
- Department of Physics, and Center for Micro- and Nanosciences and Technologies, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Dean Marković
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
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15
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Singh S, Samineni R, Pabbaraja S, Mehta G. A General Carbazole Synthesis via Stitching of Indole–Ynones with Nitromethanes: Application to Total Synthesis of Carbazomycin A, Calothrixin B, and Staurosporinone. Org Lett 2019; 21:3372-3376. [DOI: 10.1021/acs.orglett.9b01111] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shweta Singh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Ramesh Samineni
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Goverdhan Mehta
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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16
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Huy Do H, Ejaz SA, Molenda R, Ohlendorf L, Villinger A, Khan SU, Lecka J, Sévigny J, Iqbal J, Ehlers P, Langer P. Benzo[b]carbazolediones Synthesis and Inhibitory Effects on Nucleotide Pyrophosphatases/Phosphodiesterases. ChemistrySelect 2019. [DOI: 10.1002/slct.201803061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Hoang Huy Do
- Institut für ChemieUniversität Rostock Albert Einstein Str. 3a 18059 Rostock Germany
| | - Syeda Abida Ejaz
- Center for Advanced Drug ResearchCOMSATS Institute of Information Technology, Abbottabad Pakistan
| | - Ricardo Molenda
- Institut für ChemieUniversität Rostock Albert Einstein Str. 3a 18059 Rostock Germany
| | - Lars Ohlendorf
- Institut für ChemieUniversität Rostock Albert Einstein Str. 3a 18059 Rostock Germany
| | - Alexander Villinger
- Institut für ChemieUniversität Rostock Albert Einstein Str. 3a 18059 Rostock Germany
| | - Shafi Ullah Khan
- Center for Advanced Drug ResearchCOMSATS Institute of Information Technology, Abbottabad Pakistan
| | - Joanna Lecka
- Département de microbiologie-infectiologie et d'immunologieFaculté de MédecineUniversité Laval, Québec, QC, G1 V 0 A6 Canada
- Centre de Recherche du CHU de Québec – Université LavalQuébec, QC, G1 V 4G2 Canada
| | - Jean Sévigny
- Département de microbiologie-infectiologie et d'immunologieFaculté de MédecineUniversité Laval, Québec, QC, G1 V 0 A6 Canada
| | - Jamshed Iqbal
- Center for Advanced Drug ResearchCOMSATS Institute of Information Technology, Abbottabad Pakistan
| | - Peter Ehlers
- Institut für ChemieUniversität Rostock Albert Einstein Str. 3a 18059 Rostock Germany
- Leibniz-Institut für Katalyse an der Universität Rostock e.V. Albert Einstein Str. 29a 18059 Rostock Germany
| | - Peter Langer
- Institut für ChemieUniversität Rostock Albert Einstein Str. 3a 18059 Rostock Germany
- Leibniz-Institut für Katalyse an der Universität Rostock e.V. Albert Einstein Str. 29a 18059 Rostock Germany
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17
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Li T, Ding T, Li J. Medicinal Purposes: Bioactive Metabolites from Marine-derived Organisms. Mini Rev Med Chem 2019; 19:138-164. [PMID: 28969543 DOI: 10.2174/1389557517666170927113143] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/25/2017] [Accepted: 06/17/2017] [Indexed: 12/20/2022]
Abstract
The environment of marine occupies about 95% biosphere of the world and it can be a critical source of bioactive compounds for humans to be explored. Special environment such as high salt, high pressure, low temperature, low nutrition and no light, etc. has made the production of bioactive substances different from terrestrial organisms. Natural ingredients secreted by marine-derived bacteria, fungi, actinomycetes, Cyanobacteria and other organisms have been separated as active pharmacophore. A number of evidences have demonstrated that bioactive ingredients isolated from marine organisms can be other means to discover novel medicines, since enormous natural compounds from marine environment were specified to be anticancer, antibacterial, antifungal, antitumor, cytotoxic, cytostatic, anti-inflammatory, antiviral agents, etc. Although considerable progress is being made within the field of chemical synthesis and engineering biosynthesis of bioactive compounds, marine environment still remains the richest and the most diverse sources for new drugs. This paper reviewed the natural compounds discovered recently from metabolites of marine organisms, which possess distinct chemical structures that may form the basis for the synthesis of new drugs to combat resistant pathogens of human life. With developing sciences and technologies, marine-derived bioactive compounds are still being found, showing the hope of solving the problems of human survival and sustainable development of resources and environment.
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Affiliation(s)
- Tingting Li
- Key Laboratory of Biotechnology and Bioresources Utilization (Dalian Minzu University), Ministry of Education, Dalian, Liaoning, 116600, China
| | - Ting Ding
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,College of Food Science and Technology, Bohai University; Food Safety Key Lab of Liaoning Province; National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products; Jinzhou, Liaoning, 121013, China
| | - Jianrong Li
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,College of Food Science and Technology, Bohai University; Food Safety Key Lab of Liaoning Province; National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products; Jinzhou, Liaoning, 121013, China
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18
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Ashraf K, Yasrebi K, Adeniyi ET, Hertlein T, Ohlsen K, Lalk M, Erdmann F, Hilgeroth A. Antistaphylococcal evaluation of indole-naphthalene hybrid analogs. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:275-283. [PMID: 30666089 PMCID: PMC6331074 DOI: 10.2147/dddt.s184965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Resistance developments against established antibiotics are an emerging problem for antibacterial therapies. Infections with Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) have become more difficult to treat with standard antibiotics that often fail, especially against MRSA. In consequence, novel antibiotics are urgently needed. Antibiotics from natural sources own complicated structures that cause difficulties for a chemical synthetic production. We developed novel small-molecule antibacterials that are easily accessible in a simple one-pot synthesis. The central indolonaphthalene core is substituted with indole residues at various positions. Both the varied indole substitutions and their positions at the molecular scaffold influence the determined antibacterial activity against the evaluated Staphylococcus strains. Best activities have been found for 5-chloro, -cyano, and -hydroxyl indole substitutions. Therefore, first promising lead compounds could be identified that are nontoxic in human HEK and SH-SY5Y cells and exceed the activity of used standard antibiotics, especially against MRSA.
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Affiliation(s)
- Kerolos Ashraf
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle, Germany,
| | - Kaveh Yasrebi
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle, Germany,
| | - Emmanuel Tola Adeniyi
- Institute of Molecular Infection Biology, Julius Maximilians University Würzburg, Würzburg, Germany
| | - Tobias Hertlein
- Institute of Molecular Infection Biology, Julius Maximilians University Würzburg, Würzburg, Germany
| | - Knut Ohlsen
- Institute of Molecular Infection Biology, Julius Maximilians University Würzburg, Würzburg, Germany
| | - Michael Lalk
- Institute of Biochemistry, Ernst Moritz Arndt University Greifswald, Greifswald, Germany
| | - Frank Erdmann
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle, Germany,
| | - Andreas Hilgeroth
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle, Germany,
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19
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Kuznetsova TA, Persiyanova EV, Ermakova SP, Khotimchenko MY, Besednova NN. The Sulfated Polysaccharides of Brown Algae and Products of Their Enzymatic Transformation as Potential Vaccine Adjuvants. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The review is devoted to critical analysis of literature data, deal with effects and mechanisms of action of sulfated polysaccharides (PSs) – fucoidans from brown algae and products of their enzymatic transformation as potential adjuvants for enhancement of anti-infective and antitumor immune response. Numerous experimental data indicate that sulfated PSs demonstrate properties of vaccine adjuvants. Application perspectiveness of fucoidans as vaccine adjuvants is defined by their high biocompatibility, low-toxicity, safety and good tolerance by macroorganism, and also mechanisms of their immunomodulatory action. In particular, fucoidans are agonists of receptors of innate immunity and strong inducers of cellular and humoral immune response. At presenting the data of structural - functional interrelations, attention focused to the defining role of degree of sulfation, uronic acids and polyphenols contents, and also molecular mass in actions of fucoidans to innate and adaptive immunity cells. Insufficiency of literary data on studying of correlation of structure – physicochemical characteristics with adjuvanticities of the sulfated PSs, and also the problem of standardization of their active fractions are noted. Special attention is paid to the analysis of immunomodulatory and adjuvant activity of fucoidan oligosaccharides. Presented here results of experimental trial indicate that, despite the difficulties due to preparation of highly purified structurally characterized fractions and complex structure of fucoidans, these substances can be used as safe and effective adjuvants in vaccines against various pathogens including viruses, and also in antitumor vaccines.
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Affiliation(s)
- Tatyana A. Kuznetsova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Elena V. Persiyanova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-letya Vladivostoka 159, 690022, Vladivostok, Russian Federation
| | - Maxim Yu. Khotimchenko
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Natalya N. Besednova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
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20
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Sol-gel synthesis of Bi2WO6/graphene thin films with enhanced photocatalytic performance for nitric monoxide oxidation under visible light irradiation. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.04.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Ma C. Magnetic properties of exchange coupled SmCo5/FeCo composite particles synthesized by magnetic self-assembly. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.02.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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22
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Synthesis and antitumor evaluation of hybrids of 5,8-dioxo-5,8-dihydroisoquinoline-4-carboxylates and carbohydrates. Future Med Chem 2018; 10:527-540. [DOI: 10.4155/fmc-2017-0173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Aim: Cancer has emerged as a growing public health problem in many parts of the world. Methodology: We describe the synthesis of a series of carbohydrate-based isoquinoline-5,8-diones through the 1,4-addition reaction between 5,8-dioxo-5,8-dihydroisoquinoline and aminocarbohydrates. Halogenated quinones were also synthesized. Their inhibitory effects on the proliferation of human cancer cell lines were studied. Results & conclusion: The most promising compound, derived from isoquinoline-5,8-dione, containing ribofuranosidyl ring, was selectively active in vitro against H1299 cancer cells, with 1.7-fold higher activity than that of vinorelbine tartrate. This result suggests that the glycoconjugate in question may constitute a valuable lead compound to design and synthesize a more active and less toxic derivative with respect to the development of a new antitumor substance.
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23
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Li Y, Jiang J, Zhu C, Li L, Li Q, Ding Y, Yang W. The Enhanced Catalytic Performance and Stability of Rh/γ-Al₂O₃ Catalyst Synthesized by Atomic Layer Deposition (ALD) for Methane Dry Reforming. MATERIALS 2018; 11:ma11010172. [PMID: 29361746 PMCID: PMC5793670 DOI: 10.3390/ma11010172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/05/2018] [Accepted: 01/13/2018] [Indexed: 01/02/2023]
Abstract
Rh/γ-Al2O3 catalysts were synthesized by both incipient wetness impregnation (IWI) and atomic layer deposition (ALD). The TEM images of the two catalysts showed that the catalyst from ALD had smaller particle size, and narrower size distribution. The surface chemical states of both catalysts were investigated by both XPS and X-ray Absorption Near Edge Structure (XANES), and the catalyst from IWI had higher concentration of Rh3+ than that from ALD. The catalytic performance of both catalysts was tested in the dry reforming of methane reaction. The catalyst from ALD showed a higher conversion and selectivity than that from IWI. The stability testing results indicated that the catalyst from ALD showed similar stability to that from IWI at 500 °C, but higher stability at 800 °C.
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Affiliation(s)
- Yunlin Li
- School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China.
| | - Jing Jiang
- School of Computer Science and Technology, Zhoukou Normal University, Zhoukou 466001, China.
| | - Chaosheng Zhu
- School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China.
| | - Lili Li
- School of Life Science and Agriculture, Zhoukou Normal University, Zhoukou 466001, China.
| | - Quanliang Li
- School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China.
| | - Yongjie Ding
- School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China.
| | - Weijie Yang
- School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China.
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24
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Muthu Ramalingam B, Dhatchana Moorthy N, Chowdhury SR, Mageshwaran T, Vellaichamy E, Saha S, Ganesan K, Rajesh BN, Iqbal S, Majumder HK, Gunasekaran K, Siva R, Mohanakrishnan AK. Synthesis and Biological Evaluation of Calothrixins B and their Deoxygenated Analogues. J Med Chem 2018; 61:1285-1315. [PMID: 29313676 DOI: 10.1021/acs.jmedchem.7b01797] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A series of calothrixin B (2) analogues bearing substituents at the 'E' ring and their corresponding deoxygenated quinocarbazoles lacking quinone unit were synthesized. The cytotoxicities of calothrixins 1, 2, and 15b-p and quinocarbazole analogues were investigated against nine cancer cell lines. The quinocarbazoles 21a and 25a inhibited the catalytic activity of human topoisomerase II. The plasmid DNA cleavage abilities of calothrixins 1, 2, and 15b-p identified compound 15h causing DNA cleavage comparable to that of calothrixin A (1). Calothrixin A (1), 3-fluorocalothrixin 15h and 4-fluoroquinocarbazole 21b induced extensive DNA damage followed by apoptotic cell death. Spectral and plasmid unwinding studies demonstrated an intercalative mode of binding for quinocarbazoles. We identified two promising drug candidates, the 3-fluorocalothrixin B 15h with low toxicity in animal model and its deoxygenated derivative 4-fluoroquinocarbazole 21b as having potent cytotoxicity against NCI-H460 cell line with a GI50 of 1 nM.
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Affiliation(s)
- Bose Muthu Ramalingam
- Department of Organic Chemistry, University of Madras , Guindy Campus, Chennai 600 025, India
| | - Nachiappan Dhatchana Moorthy
- Department of Biochemistry, University of Madras , Guindy Campus, Chennai 600 025, India.,Research and Development Centre, Orchid Pharma Ltd , Sholinganallur, Chennai 600 119, India
| | - Somenath Roy Chowdhury
- Division of Infectious Diseases & Immunology, Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | | | - Elangovan Vellaichamy
- Department of Biochemistry, University of Madras , Guindy Campus, Chennai 600 025, India
| | - Sourav Saha
- Division of Infectious Diseases & Immunology, Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Karthikeyan Ganesan
- Research and Development Centre, Orchid Pharma Ltd , Sholinganallur, Chennai 600 119, India
| | - B Navin Rajesh
- Research and Development Centre, Orchid Pharma Ltd , Sholinganallur, Chennai 600 119, India
| | - Saleem Iqbal
- CAS in Crystallography & Biophysics, University of Madras , Chennai 600 025, India
| | - Hemanta K Majumder
- Division of Infectious Diseases & Immunology, Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | | | - Ramamoorthy Siva
- School of Bio Sciences and Technology, VIT University , Vellore 632 014, India
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25
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Lin K, Jian Y, Zhao P, Zhao CS, Pan WD, Liu S. A rapid construction of a specific quino[4,3-b] carbazolone system and its application for the synthesis of calothrixin B. Org Chem Front 2018. [DOI: 10.1039/c7qo00864c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient methodology is developed for the synthesis of functionalized specific carbazole lactams related to pyrido[4,3-b]- and quino[4,3-b] carbazole alkaloids.
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Affiliation(s)
- Kai Lin
- Zunyi Medical University
- Zunyi 563000
- P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
| | - Yong Jian
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
- Guiyang 550014
- PR China
| | - Peng Zhao
- College of Pharmacy
- Guizhou University
- Guiyang 550014
- PR China
| | - Chun-shen Zhao
- College of Pharmacy
- Guizhou University
- Guiyang 550014
- PR China
| | - Wei-dong Pan
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
- Guiyang 550014
- PR China
| | - Sheng Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
- Guiyang 550014
- PR China
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26
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Novel Effective Small-Molecule Antibacterials against Enterococcus Strains. Molecules 2017; 22:molecules22122193. [PMID: 29232858 PMCID: PMC6149733 DOI: 10.3390/molecules22122193] [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: 11/01/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 11/16/2022] Open
Abstract
Enterococcus species cause increasing numbers of infections in hospitals. They contribute to the increasing mortality rates, mostly in patients with comorbidities, who suffer from severe diseases. Enterococcus resistances against most antibiotics have been described, including novel antibiotics. Therefore, there is an ongoing demand for novel types of antibiotics that may overcome bacterial resistances. We discovered a novel class of antibiotics resulting from a simple one-pot reaction of indole and o-phthaldialdehyde. Differently substituted indolyl benzocarbazoles were yielded. Both the indole substitution and the positioning at the molecular scaffold influence the antibacterial activity towards the various strains of Enterococcus species with the highest relevance to nosocomial infections. Structure-activity relationships are discussed, and the first lead compounds were identified as also being effective in the case of a vancomycin resistance.
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27
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Carral-Menoyo A, Ortiz-de-Elguea V, Martinez-Nunes M, Sotomayor N, Lete E. Palladium-Catalyzed Dehydrogenative Coupling: An Efficient Synthetic Strategy for the Construction of the Quinoline Core. Mar Drugs 2017; 15:md15090276. [PMID: 28867803 PMCID: PMC5618415 DOI: 10.3390/md15090276] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/04/2017] [Accepted: 08/24/2017] [Indexed: 01/20/2023] Open
Abstract
Palladium-catalyzed dehydrogenative coupling is an efficient synthetic strategy for the construction of quinoline scaffolds, a privileged structure and prevalent motif in many natural and biologically active products, in particular in marine alkaloids. Thus, quinolines and 1,2-dihydroquinolines can be selectively obtained in moderate-to-good yields via intramolecular C–H alkenylation reactions, by choosing the reaction conditions. This methodology provides a direct method for the construction of this type of quinoline through an efficient and atom economical procedure, and constitutes significant advance over the existing procedures that require preactivated reaction partners.
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Affiliation(s)
- Asier Carral-Menoyo
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Apdo. 644, 48080 Bilbao, Spain.
| | - Verónica Ortiz-de-Elguea
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Apdo. 644, 48080 Bilbao, Spain.
| | - Mikel Martinez-Nunes
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Apdo. 644, 48080 Bilbao, Spain.
| | - Nuria Sotomayor
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Apdo. 644, 48080 Bilbao, Spain.
| | - Esther Lete
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, Apdo. 644, 48080 Bilbao, Spain.
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28
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Lee S, Kim KH, Cheon CH. Total Syntheses of Arcyriaflavin A and Calothrixin B Using 2,2′-Bisindole-3-acetic Acid Derivative as a Common Intermediate. Org Lett 2017; 19:2785-2788. [DOI: 10.1021/acs.orglett.7b00687] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sungjong Lee
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Kyung-Hee Kim
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Cheol-Hong Cheon
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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29
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Norman AR, Norcott P, McErlean CS. Overview of the synthesis of carbazoloquinone natural products. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Guo J, Kiran IC, Gao J, Reddy RS, He Y. Total synthesis of calothrixins and their analogues via formal [3+2] cycloaddition of arynes and 2-aminophenanthridinedione. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.091] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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