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Wei Y, Yan Y, Li X, Xie L, Huang W. Covalent nanosynthesis of fluorene-based macrocycles and organic nanogrids. Org Biomol Chem 2021; 20:73-97. [PMID: 34859249 DOI: 10.1039/d1ob01558c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gridization is an alternative way to create macromolecules of various sizes in addition to linear and dendritic polymerization as well as cyclization. Organic nanogrids are an expanding family of macrocycle-like closed structures at the nanoscale, but with a series of well-defined extension edges and vertices. Cyclic nanogrids can be used as nanoscale building blocks for the fabrication of not only rotaxanes, catenanes, knots, 3D cages, but also nanopolymers, covalent organic frameworks (COFs), metal-organic frameworks (MOFs), and complex molecular cross-scale architectures. In this review, the history of fluorene-based macrocycles has first been explored, followed by the development of the synthetic methodologies; in particular, fluorene-based nanogrids are highlighted owing to their features and applications. Typically, fluorenes are fused arenes with a hybrid entity between tetrahedral Csp3 and Csp2. Four ingenious connection modes of fluorene-based macrocycles, including 2,7-, 3,6-, 9,9-, and 2,9-linkages, fully demonstrate the geometric possibilities of the macrocycles and nanogrids. Such fluorene-based nanogrids will give birth to organic intelligence.
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Affiliation(s)
- Ying Wei
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Yongxia Yan
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Xiaoyan Li
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Linghai Xie
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Wei Huang
- Centre for Molecular Systems and Organic Devices (CMSOD), State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China. .,Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University, Xi'an 710072, China
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2
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Jamali M, Sardarian AR, Rezaei F, Ghanbari MM, Mohajeri A. Highly efficient microwave‐assisted solvent free sequential one‐pot multicomponent synthesis of novel 2‐hydroxy indenopyridin‐5‐ones and mechanismic computational study. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marzieh Jamali
- Chemistry Department, College of Sciences Shiraz University Shiraz Iran
| | | | - Farideh Rezaei
- Chemistry Department, College of Sciences Shiraz University Shiraz Iran
| | | | - Afshan Mohajeri
- Chemistry Department, College of Sciences Shiraz University Shiraz Iran
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3
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Kunwar S, Hwang SY, Katila P, Seo M, Man Kadayat T, Kwon Y, Lee ES. 4-Flourophenyl-substituted 5H-indeno[1,2-b]pyridinols with enhanced topoisomerase IIα inhibitory activity: Synthesis, biological evaluation, and structure-activity relationships. Bioorg Chem 2021; 116:105349. [PMID: 34536927 DOI: 10.1016/j.bioorg.2021.105349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/18/2021] [Accepted: 09/07/2021] [Indexed: 11/29/2022]
Abstract
A series of fluorinated and hydroxylated 2,4-diphenyl indenopyridinols were designed and synthesized using l-proline-catalyzed and microwave-assisted synthetic methods for the development of new anticancer agents. Adriamycin and etoposide were used as reference compounds for the evaluation of topo IIα inhibitory and anti-proliferative activity of the synthesized compounds. Exploring the structure-activity relationships of 36 prepared compounds and biological results, most of the compounds with ortho- and para-fluorophenyl at 4-position of indenopyridinol ring displayed strong topo IIα inhibition. In addition, the majority of the ortho- and meta-fluorophenyl substituted compounds 1-24 displayed strong anti-proliferative activity against DU145 prostate cancer cell line compared to the positive controls. Interestingly, compound 4 possessing ortho-phenolic and ortho-fluorophenyl group at 2- and 4-position, respectively of the central pyridine ring showed high anti-proliferative activity (IC50 = 0.82 μM) against T47D human breast cancer cell line, while para-phenolic and para-fluorophenyl substituted compound 36 exhibited potent topo IIα inhibitory activity with 94.7% and 88.6% inhibition at 100 μM and 20 μM concentration, respectively. A systematic comparison between the results of this study and the previous study indicated that minor changes in the position of functional groups in the structure affect the topo IIα inhibitory activity and anti-proliferative activity of the compounds. The findings from this study will provide valuable information to the researchers working on the medicinal chemistry of topoisomerase IIα-targeted anticancer agents.
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Affiliation(s)
- Surendra Kunwar
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Soo-Yeon Hwang
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Global Top 5 Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Pramila Katila
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Minjung Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Global Top 5 Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Tara Man Kadayat
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Youngjoo Kwon
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Global Top 5 Program, Ewha Womans University, Seoul 120-750, Republic of Korea.
| | - Eung-Seok Lee
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea.
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4
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Khan E. Pyridine Derivatives as Biologically Active Precursors; Organics and Selected Coordination Complexes. ChemistrySelect 2021. [DOI: 10.1002/slct.202100332] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ezzat Khan
- Department of Chemistry University of Malakand, Chakdara 18800, Lower Dir Khyber Pakhtunkhwa Pakistan
- Department of Chemistry, College of Science University of Bahrain Sakhir 32038 Bahrain
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5
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Shakya B, Yadav PN. Thiosemicarbazones as Potent Anticancer Agents and their Modes of Action. Mini Rev Med Chem 2020; 20:638-661. [DOI: 10.2174/1389557519666191029130310] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 09/17/2019] [Accepted: 10/03/2019] [Indexed: 11/22/2022]
Abstract
:Thiosemicarbazones (TSCs) are a class of Schiff bases usually obtained by the condensation of thiosemicarbazide with a suitable aldehyde or ketone. TSCs have been the focus of chemists and biologists due to their wide range of pharmacological effects. One of the promising areas in which these excellent metal chelators are being developed is their use against cancer. TSCs have a wide clinical antitumor spectrum with efficacy in various tumor types such as leukemia, pancreatic cancer, breast cancer, non-small cell lung cancer, cervical cancer, prostate cancer and bladder cancer. To obtain better activity, different series of TSCs have been developed by modifying the heteroaromatic system in their molecules. These compounds possessed significant antineoplastic activity when the carbonyl attachment of the side chain was located at a position α to the ring nitrogen atom, whereas attachment of the side chain β or γ to the heterocyclic N atom resulted in inactive antitumor agents. In addition, replacement of the heterocyclic ring N with C also resulted in a biologically inactive compound suggesting that a conjugated N,N,S-tridentate donor set is essential for the biological activities of thiosemicarbazones. Several possible mechanisms have been implemented for the anticancer activity of thiosemicarbazones.
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Affiliation(s)
- Bhushan Shakya
- Amrit Campus, Tribhuvan University, Thamel, Kathmandu, Nepal
| | - Paras Nath Yadav
- Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal
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Liang X, Wu Q, Luan S, Yin Z, He C, Yin L, Zou Y, Yuan Z, Li L, Song X, He M, Lv C, Zhang W. A comprehensive review of topoisomerase inhibitors as anticancer agents in the past decade. Eur J Med Chem 2019; 171:129-168. [PMID: 30917303 DOI: 10.1016/j.ejmech.2019.03.034] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 01/28/2023]
Abstract
The topoisomerase enzymes play an important role in DNA metabolism, and searching for enzyme inhibitors is an important target in the search for new anticancer drugs. Discovery of new anticancer chemotherapeutical capable of inhibiting topoisomerase enzymes is highlighted in anticancer research. Therefore, biologists, organic chemists and medicinal chemists all around the world have been identifying, designing, synthesizing and evaluating a variety of novel bioactive molecules targeting topoisomerase. This review summarizes types of topoisomerase inhibitors in the past decade, and divides them into nine classes by structural characteristics, including N-heterocycles compounds, quinone derivatives, flavonoids derivatives, coumarin derivatives, lignan derivatives, polyphenol derivatives, diterpenes derivatives, fatty acids derivatives, and metal complexes. Then we discussed the application prospect and development of these anticancer compounds, as well as concluded parts of their structural-activity relationships. We believe this review would be invaluable in helping to further search potential topoisomerase inhibition as antitumor agent in clinical usage.
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Affiliation(s)
- Xiaoxia Liang
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China.
| | - Qiang Wu
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Shangxian Luan
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Zhongqiong Yin
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Changliang He
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Lizi Yin
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Yuanfeng Zou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Zhixiang Yuan
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Lixia Li
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Xu Song
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Min He
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Cheng Lv
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Wei Zhang
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
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Hume PA, Monks JP, Pop F, Davies ES, MacKenzie RCI, Amabilino DB. Self-Assembly of Chiral-at-End Diketopyrrolopyrroles: Symmetry Dependent Solution and Film Optical Activity and Photovoltaic Performance. Chemistry 2018; 24:14461-14469. [DOI: 10.1002/chem.201802610] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Paul A. Hume
- School of Chemistry; University of Nottingham; University Park NG7 2RD UK
- Present address: School of Chemical Sciences; The University of Auckland; 23 Symonds Street Auckland 1010 New Zealand
| | - James P. Monks
- School of Chemistry; University of Nottingham; University Park NG7 2RD UK
- The GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
| | - Flavia Pop
- School of Chemistry; University of Nottingham; University Park NG7 2RD UK
- Present address: Laboratoire MOLTECH-Anjou; UMR 6200 CNRS UFR Sciences, Bât. K; 2 bd. Lavoisier 49045 Angers France
| | - E. Stephen Davies
- School of Chemistry; University of Nottingham; University Park NG7 2RD UK
| | | | - David B. Amabilino
- School of Chemistry; University of Nottingham; University Park NG7 2RD UK
- The GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
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Hu W, Huang XS, Wu JF, Yang L, Zheng YT, Shen YM, Li ZY, Li X. Discovery of Novel Topoisomerase II Inhibitors by Medicinal Chemistry Approaches. J Med Chem 2018; 61:8947-8980. [PMID: 29870668 DOI: 10.1021/acs.jmedchem.7b01202] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Hu
- State Key Laboratory of Microbial Technology, School of Life Science, Shandong University, 27 South Shanda Road, 250100 Ji’nan, Shandong, P. R. China
| | - Xu-Sheng Huang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Science and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Ji-Feng Wu
- Institute of Criminal Science and Technology, Ji’nan Public Security Bureau, 21 South QiliShan Road, 250000 Ji’nan, Shandong, P. R. China
| | - Liang Yang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Ji’nan, Shandong, P. R. China
| | - Yong-Tang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Science and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Yue-Mao Shen
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Ji’nan, Shandong, P. R. China
| | - Zhi-Yu Li
- Department of Pharmaceutical Sciences, Philadelphia College of Pharmacy, Philadelphia, Pennsylvania 19104, United States
| | - Xun Li
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Ji’nan, Shandong, P. R. China
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de Almeida SMV, Ribeiro AG, de Lima Silva GC, Ferreira Alves JE, Beltrão EIC, de Oliveira JF, de Carvalho LB, Alves de Lima MDC. DNA binding and Topoisomerase inhibition: How can these mechanisms be explored to design more specific anticancer agents? Biomed Pharmacother 2017; 96:1538-1556. [DOI: 10.1016/j.biopha.2017.11.054] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/07/2017] [Accepted: 11/07/2017] [Indexed: 12/11/2022] Open
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10
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Mohareb RM, Ibrahim RA. Design, cytotoxicity and toxicity of new thiophene and thieno [2,3-b] pyridine derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1780-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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11
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Jeon KH, Park C, Kadayat TM, Shrestha A, Lee ES, Kwon Y. A novel indeno[1,2-b]pyridinone derivative, a DNA intercalative human topoisomerase IIα catalytic inhibitor, for caspase 3-independent anticancer activity. Chem Commun (Camb) 2017; 53:6864-6867. [DOI: 10.1039/c7cc02372c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel 2-(furan-2-yl)-4-(pyridin-2-yl)-5H-indeno[1,2-b]pyridin-5-one (TI-1-190) was synthesized using a simple microwave-assisted method and its mode of action was systematically characterized.
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Affiliation(s)
- K. H. Jeon
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750
- Republic of Korea
| | - C. Park
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750
- Republic of Korea
| | - T. M. Kadayat
- College of Pharmacy
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - A. Shrestha
- College of Pharmacy
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - E. S. Lee
- College of Pharmacy
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Y. Kwon
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750
- Republic of Korea
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Park S, Kadayat TM, Jun KY, Thapa Magar TB, Bist G, Shrestha A, Lee ES, Kwon Y. Novel 2-aryl-4-(4′-hydroxyphenyl)-5H-indeno[1,2-b]pyridines as potent DNA non-intercalative topoisomerase catalytic inhibitors. Eur J Med Chem 2017; 125:14-28. [DOI: 10.1016/j.ejmech.2016.09.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 11/25/2022]
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13
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Karki R, Jun KY, Kadayat TM, Shin S, Thapa Magar TB, Bist G, Shrestha A, Na Y, Kwon Y, Lee ES. A new series of 2-phenol-4-aryl-6-chlorophenyl pyridine derivatives as dual topoisomerase I/II inhibitors: Synthesis, biological evaluation and 3D-QSAR study. Eur J Med Chem 2016; 113:228-45. [DOI: 10.1016/j.ejmech.2016.02.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 02/18/2016] [Accepted: 02/19/2016] [Indexed: 11/16/2022]
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Kadayat TM, Park S, Jun KY, Magar TBT, Bist G, Shrestha A, Na Y, Kwon Y, Lee ES. Effect of chlorine substituent on cytotoxic activities: Design and synthesis of systematically modified 2,4-diphenyl-5H-indeno[1,2-b]pyridines. Bioorg Med Chem Lett 2016; 26:1726-31. [DOI: 10.1016/j.bmcl.2016.02.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 01/29/2016] [Accepted: 02/19/2016] [Indexed: 02/06/2023]
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Synthetic Advances in the Indane Natural Product Scaffolds as Drug Candidates. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/b978-0-444-63932-5.00008-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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16
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Modified 2,4-diaryl-5H-indeno[1,2-b]pyridines with hydroxyl and chlorine moiety: Synthesis, anticancer activity, and structure–activity relationship study. Bioorg Chem 2015. [DOI: 10.1016/j.bioorg.2015.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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17
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Karki R, Song C, Kadayat TM, Magar TBT, Bist G, Shrestha A, Na Y, Kwon Y, Lee ES. Topoisomerase I and II inhibitory activity, cytotoxicity, and structure–activity relationship study of dihydroxylated 2,6-diphenyl-4-aryl pyridines. Bioorg Med Chem 2015; 23:3638-54. [DOI: 10.1016/j.bmc.2015.04.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 12/21/2022]
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18
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Kadayat TM, Song C, Shin S, Magar TBT, Bist G, Shrestha A, Thapa P, Na Y, Kwon Y, Lee ES. Synthesis, topoisomerase I and II inhibitory activity, cytotoxicity, and structure–activity relationship study of 2-phenyl- or hydroxylated 2-phenyl-4-aryl-5H-indeno[1,2-b]pyridines. Bioorg Med Chem 2015; 23:3499-512. [DOI: 10.1016/j.bmc.2015.04.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/23/2015] [Accepted: 04/10/2015] [Indexed: 10/23/2022]
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