1
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Inai M, Ueno Y, Sagara H, Ouchi H, Yoshimura F, Kan T. Total Synthesis of Isosilybin B. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200653] [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)
- Makoto Inai
- University of Shizuoka School of Pharmaceutical Sciences 52-1 Yada, Suruga-ku 422-8526 Shizuoka JAPAN
| | - Yoshinori Ueno
- Shizuoka Kenritsu Daigaku Department School of Pharmaceutical Sciences JAPAN
| | - Hiroto Sagara
- Shizuoka Kenritsu Daigaku Department School of Pharmaceutical Sciences JAPAN
| | - Hitoshi Ouchi
- Shizuoka Kenritsu Daigaku Department School of Pharmaceutical Sciences JAPAN
| | - Fumihiko Yoshimura
- Shizuoka Kenritsu Daigaku Department School of Pharmaceutical Sciences JAPAN
| | - Toshiyuki Kan
- Shizuoka Kenritsu Daigaku Department School of Pharmaceutical Sciences JAPAN
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2
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Phang YL, Liu S, Zheng C, Xu H. Recent advances in the synthesis of natural products containing the phloroglucinol motif. Nat Prod Rep 2022; 39:1766-1802. [PMID: 35762867 DOI: 10.1039/d1np00077b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Covering: June 2009 to 2021Natural products containing a phloroglucinol motif include simple and oligomeric phloroglucinols, polycyclic polyprenylated acylphloroglucinols, phloroglucinol-terpenes, xanthones, flavonoids, and coumarins. These compounds represent a major class of secondary metabolites which exhibit a wide range of biological activities such as antimicrobial, anti-inflammatory, antioxidant and hypoglycaemic properties. A number of these compounds have been authorized for therapeutic use or are currently being studied in clinical trials. Their structural diversity and utility in both traditional and conventional medicine have made them popular synthetic targets over the years. In this review, we compile and summarise the recent synthetic approaches to the natural products bearing a phloroglucinol motif. Focus has been given on ingenious strategies to functionalize the phloroglucinol moiety at multiple positions. The isolation and bioactivities of the compounds are also provided.
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Affiliation(s)
- Yee Lin Phang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Song Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Hongxi Xu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Sahadevan R, Singh S, Binoy A, Sadhukhan S. Chemico-biological aspects of (-)-epigallocatechin- 3-gallate (EGCG) to improve its stability, bioavailability and membrane permeability: Current status and future prospects. Crit Rev Food Sci Nutr 2022; 63:10382-10411. [PMID: 35491671 DOI: 10.1080/10408398.2022.2068500] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Natural products have been a bedrock for drug discovery for decades. (-)-Epigallocatechin-3-gallate (EGCG) is one of the widely studied natural polyphenolic compounds derived from green tea. It is the key component believed to be responsible for the medicinal value of green tea. Significant studies implemented in in vitro, in cellulo, and in vivo models have suggested its anti-oxidant, anti-cancer, anti-diabetic, anti-inflammatory, anti-microbial, neuroprotective activities etc. Despite having such a wide array of therapeutic potential and promising results in preclinical studies, its applicability to humans has encountered with rather limited success largely due to the poor bioavailability, poor membrane permeability, rapid metabolic clearance and lack of stability of EGCG. Therefore, novel techniques are warranted to address those limitations so that EGCG or its modified analogs can be used in the clinical setup. This review comprehensively covers different strategies such as structural modifications, nano-carriers as efficient drug delivery systems, synergistic studies with other bioactivities to improve the chemico-biological aspects (e.g., stability, bioavailability, permeability, etc.) of EGCG for its enhanced pharmacokinetics and pharmacological properties, eventually enhancing its therapeutic potentials. We think this review article will serve as a strong platform with comprehensive literature on the development of novel techniques to improve the bioavailability of EGCG so that it can be translated to the clinical applications.
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Affiliation(s)
- Revathy Sahadevan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Satyam Singh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India
| | - Anupama Binoy
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Kerala, India
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4
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Pinto C, Cidade H, Pinto M, Tiritan ME. Chiral Flavonoids as Antitumor Agents. Pharmaceuticals (Basel) 2021; 14:1267. [PMID: 34959668 PMCID: PMC8704364 DOI: 10.3390/ph14121267] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 12/25/2022] Open
Abstract
Flavonoids are a group of natural products with a great structural diversity, widely distributed in plant kingdom. They play an important role in plant growth, development and defense against aggressors. Flavonoids show a huge variety of biological activities such as antioxidant, anti-inflammatory, anti-mutagenic, antimicrobial and antitumor, being able to modulate a large diversity of cellular enzymatic activities. Among natural flavonoids, some classes comprise chiral molecules including flavanones, flavan-3-ols, isoflavanones, and rotenoids, which have one or more stereogenic centers. Interestingly, in some cases, individual compounds of enantiomeric pairs have shown different antitumor activity. In nature, these compounds are mainly biosynthesized as pure enantiomers. Nevertheless, they are often isolated as racemates, being necessary to carry out their chiral separation to perform enantioselectivity studies. Synthetic chiral flavonoids with promising antitumor activity have also been obtained using diverse synthetic approaches. In fact, several new chiral bioactive flavonoids have been synthesized by enantioselective synthesis. Particularly, flavopiridol was the first cyclin-dependent kinase (CDK) inhibitor which entered clinical trials. The chiral pool approaches using amino acid as chiral building blocks have also been reported to achieve small libraries of chrysin derivatives with more potent in vitro growth inhibitory effect than chrysin, reinforcing the importance of the introduction of chiral moieties to improve antitumor activity. In this work, a literature review of natural and synthetic chiral flavonoids with antitumor activity is reported for the first time.
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Affiliation(s)
- Cláudia Pinto
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (C.P.); (H.C.); (M.P.)
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - Honorina Cidade
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (C.P.); (H.C.); (M.P.)
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - Madalena Pinto
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (C.P.); (H.C.); (M.P.)
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - Maria Elizabeth Tiritan
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (C.P.); (H.C.); (M.P.)
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
- CESPU, Institute of Research and Advanced Training in Health Sciences and Technologies (IINFACTS), Rua Central de Gandra, 1317, 4585-116 Gandra, Portugal
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Cataneo AHD, Ávila EP, Mendes LADO, de Oliveira VG, Ferraz CR, de Almeida MV, Frabasile S, Duarte Dos Santos CN, Verri WA, Bordignon J, Wowk PF. Flavonoids as Molecules With Anti- Zika virus Activity. Front Microbiol 2021; 12:710359. [PMID: 34566915 PMCID: PMC8462986 DOI: 10.3389/fmicb.2021.710359] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 08/03/2021] [Indexed: 11/13/2022] Open
Abstract
Zika virus (ZIKV) is an arthropod-born virus that is mainly transmitted to humans by mosquitoes of the genus Aedes spp. Since its first isolation in 1947, only a few human cases had been described until large outbreaks occurred on Yap Island (2007), French Polynesia (2013), and Brazil (2015). Most ZIKV-infected individuals are asymptomatic or present with a self-limiting disease and nonspecific symptoms such as fever, myalgia, and headache. However, in French Polynesia and Brazil, ZIKV outbreaks led to the diagnosis of congenital malformations and microcephaly in newborns and Guillain-Barré syndrome (GBS) in adults. These new clinical presentations raised concern from public health authorities and highlighted the need for anti-Zika treatments and vaccines to control the neurological damage caused by the virus. Despite many efforts in the search for an effective treatment, neither vaccines nor antiviral drugs have become available to control ZIKV infection and/or replication. Flavonoids, a class of natural compounds that are well-known for possessing several biological properties, have shown activity against different viruses. Additionally, the use of flavonoids in some countries as food supplements indicates that these molecules are nontoxic to humans. Thus, here, we summarize knowledge on the use of flavonoids as a source of anti-ZIKV molecules and discuss the gaps and challenges in this area before these compounds can be considered for further preclinical and clinical trials.
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Affiliation(s)
| | - Eloah Pereira Ávila
- Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
| | | | | | - Camila Rodrigues Ferraz
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | | | - Sandra Frabasile
- Sección Virologia, Facultad de Ciencias, Universidad de La República, Montevideo, Uruguay
| | | | - Waldiceu Aparecido Verri
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Juliano Bordignon
- Laboratório de Virologia Molecular, Instituto Carlos Chagas/Fiocruz-PR, Curitiba, Brazil
| | - Pryscilla Fanini Wowk
- Laboratório de Virologia Molecular, Instituto Carlos Chagas/Fiocruz-PR, Curitiba, Brazil
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6
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Delannoy López DM, Tran DT, Viault G, Dairi S, Peixoto PA, Capello Y, Minder L, Pouységu L, Génot E, Di Primo C, Deffieux D, Quideau S. Real-Time Analysis of Polyphenol-Protein Interactions by Surface Plasmon Resonance Using Surface-Bound Polyphenols. Chemistry 2021; 27:5498-5508. [PMID: 33443311 DOI: 10.1002/chem.202005187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Indexed: 11/11/2022]
Abstract
A selection of bioactive polyphenols of different structural classes, such as the ellagitannins vescalagin and vescalin, the flavanoids catechin, epicatechin, epigallocatechin gallate (EGCG), and procyanidin B2, and the stilbenoids resveratrol and piceatannol, were chemically modified to bear a biotin unit for enabling their immobilization on streptavidin-coated sensor chips. These sensor chips were used to evaluate in real time by surface plasmon resonance (SPR) the interactions of three different surface-bound polyphenolic ligands per sensor chip with various protein analytes, including human DNA topoisomerase IIα, flavonoid leucoanthocyanidin dioxygenase, B-cell lymphoma 2 apoptosis regulator protein, and bovine serum albumin. The types and levels of SPR responses unveiled major differences in the association, or lack thereof, and dissociation between a given protein analyte and different polyphenolic ligands. Thus, this multi-analysis SPR technique is a valuable methodology to rapidly screen and qualitatively compare various polyphenol-protein interactions.
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Affiliation(s)
| | - Dong Tien Tran
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France
| | - Guillaume Viault
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France
| | - Sofiane Dairi
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France
| | | | - Yoan Capello
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France
| | - Laëtitia Minder
- INSERM, CNRS, IECB (US001, UMS 3033), Univ. Bordeaux, 2 rue Robert Escarpit, 33607, Pessac Cedex, France
| | - Laurent Pouységu
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France
| | - Elisabeth Génot
- Centre de Recherche Cardio-Thoracique de Bordeaux (INSERM U1045), Univ. Bordeaux, 2 rue Robert Escarpit, 33607, Pessac Cedex, France
| | - Carmelo Di Primo
- INSERM, CNRS (U1212, UMR 5320), IECB, Univ. Bordeaux, 2 rue Robert Escarpit, 33607, Pessac Cedex, France
| | - Denis Deffieux
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France
| | - Stéphane Quideau
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, 33405, Talence Cedex, France.,Institut Universitaire de France, 1 rue Descartes, 75231, Paris Cedex 05, France
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7
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Thieltges DDS, Baumgarten KD, Michaelis CS, Czekelius C. Synthesis of B-ring-fluorinated (−)-epicatechin gallate derivatives. Org Biomol Chem 2020; 18:4024-4028. [DOI: 10.1039/d0ob00686f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electronically modified, fluorinated catechins and epicatechins are enantioselectively synthesized in a short, convergent sequence via kinetic resolution.
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Affiliation(s)
- David D. S. Thieltges
- Institute for Organic Chemistry and Macromolecular Chemistry
- Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
| | - Kai D. Baumgarten
- Institute for Organic Chemistry and Macromolecular Chemistry
- Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
| | - Carina S. Michaelis
- Institute for Organic Chemistry and Macromolecular Chemistry
- Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
| | - Constantin Czekelius
- Institute for Organic Chemistry and Macromolecular Chemistry
- Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
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9
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Abstract
Flavan-3-ols are a series of natural products widely present in plants and show versatile biological activities. The structures of such compounds are characterized by owing two adjacent chiral centers and three rings. Their interesting structures and promising biological activities have driven increasing research developments toward the preparation of enantioenriched flavan-3-ols. This review summarizes the recent approaches for the asymmetric synthesis of chiral flavan-3-ols from two strategies in the construction of chiral centers. The key steps in the synthetic protocol involve Sharpless asymmetric dihydroxylation, Shi asymmetric epoxidation and Sharpless asymmetric epoxidation.
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Affiliation(s)
- Zehua Yang
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Fang Xiao
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Yinxiang Zhang
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Zaoduan Wu
- c Affiliated Nanhua Hospital, University of South China , Hengyang , Hunan , PR China
| | - Xing Zheng
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
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10
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Heravi MM, Ghalavand N, Ghanbarian M, Mohammadkhani L. Applications of Mitsunobu Reaction in total synthesis of natural products. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4464] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Majid M. Heravi
- Department of Chemistry; Alzahra University; Vanak, P.O. Box 1993893973 Tehran Iran
| | - Nastaran Ghalavand
- Department of Chemistry; Alzahra University; Vanak, P.O. Box 1993893973 Tehran Iran
| | - Manizheh Ghanbarian
- Department of Chemistry; Alzahra University; Vanak, P.O. Box 1993893973 Tehran Iran
| | - Leyla Mohammadkhani
- Department of Chemistry; Alzahra University; Vanak, P.O. Box 1993893973 Tehran Iran
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11
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Li F, Wang Y, Li D, Chen Y, Qiao X, Fardous R, Lewandowski A, Liu J, Chan TH, Dou QP. Perspectives on the recent developments with green tea polyphenols in drug discovery. Expert Opin Drug Discov 2018; 13:643-660. [PMID: 29688074 PMCID: PMC6287262 DOI: 10.1080/17460441.2018.1465923] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Increasing evidence has expanded the role of green tea from a traditional beverage to a source of pharmacologically active molecules with diverse health benefits. However, conclusive clinical results are needed to better elucidate the cancer-preventive and therapeutic effects of green tea polyphenols (GTPs). Areas covered: The authors describe GTPs' chemical compositions and metabolic biotransformations, and their recent developments in drug discovery, focusing on their cancer chemopreventive and therapeutic effects. They then review the recent development of GTP-loaded nanoparticles and GTP prodrugs. Expert opinion: GTPs possess potent anticarcinogenic activities through interfering with the initiation, development and progression phases of cancer. There are several challenges (e.g. poor bioavailability) in developing GTPs as therapeutic agents. Use of nanoparticle-based delivery systems has provided unique advantages over purified GTPs. However, there is still a need to determine the actual magnitude and pharmacological mechanisms of GTPs encapsulated in nanoparticles, in order to address newly emerging safety issues associated with the potential 'local overdose' effect. The use of Pro- epigallocatechin gallate (Pro-EGCG) as a prodrug appears to offer improved in vitro stability as well as better in vivo bioavailability and efficacies in a number of animal studies, suggesting its potential as a therapeutic agent for further study and development.
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Affiliation(s)
- Feng Li
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, People’s Republic of China
- Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, Wayne State University School of Medicine, 4100 John R Road Detroit, MI 48201, USA
| | - Yongli Wang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, People’s Republic of China
| | - Dapeng Li
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, People’s Republic of China
| | - Yilun Chen
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, People’s Republic of China
| | - Xuguang Qiao
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, People’s Republic of China
| | - Rania Fardous
- Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, Wayne State University School of Medicine, 4100 John R Road Detroit, MI 48201, USA
| | - Ashton Lewandowski
- Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, Wayne State University School of Medicine, 4100 John R Road Detroit, MI 48201, USA
| | - Jinbao Liu
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou 511436, People’s Republic of China
| | - Tak-Hang Chan
- Department of Chemistry, McGill University, Montreal, Quebec, Canada; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong
| | - Q. Ping Dou
- Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, Wayne State University School of Medicine, 4100 John R Road Detroit, MI 48201, USA
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou 511436, People’s Republic of China
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12
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Instant structure profiling of substituted catechins by chemical shift fingerprint of hydrogens of phenolic hydroxyl groups. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.07.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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13
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Shiraishi N, Kumazoe M, Fuse S, Tachibana H, Tanaka H. The Synthesis of trans-Flavan-3-ol Gallates by Regioselective Oxidative Etherification and Their Cytotoxicity Mediated by 67 LR. Chemistry 2016; 22:13050-3. [PMID: 27410248 DOI: 10.1002/chem.201602817] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Indexed: 11/09/2022]
Abstract
We report on a chiral pool approach for the synthesis of trans-flavan-3-ol gallates from epichlorohydrin. The trans-flavan-3-ol gallates were prepared by the cycloetherification of the phenol at the C2 benzylic position of 2-acylozyl-1,3-diarylpropane during regioselective C-H oxidation. The 1,3-diarylpropanes were prepared starting from epichlorohydrin by epoxide opening with A and B ring precursors, followed by acylation of the resultant alcohol with galloyl chloride. The availability of both the enantiomers of epichlorohydrin allowed the preparation of the corresponding enantiomer using the same procedure. The cytotoxicity of the compounds against U266 cells was tested, in which 5-deoxy-7,3'-O-dimethyl gallocatechin gallate exhibited cytotoxicity that was more than ten times stronger than natural (-)-EGCG. In addition, the absolute configuration of the derivatives did not critically affect the biological activity.
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Affiliation(s)
- Nana Shiraishi
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1-H101 Ookayama, Meguro, Tokyo, 152-8552, Japan
| | - Motofumi Kumazoe
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1, Hakozaki, Fukuoka, 812-8581, Japan
| | - Shinichiro Fuse
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1-H101 Ookayama, Meguro, Tokyo, 152-8552, Japan.,Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan
| | - Hirofumi Tachibana
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1, Hakozaki, Fukuoka, 812-8581, Japan
| | - Hiroshi Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1-H101 Ookayama, Meguro, Tokyo, 152-8552, Japan.
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14
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Wang S, Jin R, Wang R, Hu Y, Dong X, Xu AE. The design, synthesis and biological evaluation of pro-EGCG derivatives as novel anti-vitiligo agents. RSC Adv 2016. [DOI: 10.1039/c6ra23172a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of prodrugs of EGCG derivatives were designed, synthesized, and the protective effect on melanocytes against H2O2-induced cell damage were extensively evaluated, demonstrating the potential application value of them in anti-vitiligo treatment.
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Affiliation(s)
- Siyu Wang
- ZJU-ENS Joint Laboratory of Medicinal Chemistry
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
| | - Rong Jin
- Department of Dermatology
- The Third People's Hospital of Hangzhou
- Hangzhou 310009
- P. R. China
| | - Ruiquan Wang
- Department of Dermatology
- The Third People's Hospital of Hangzhou
- Hangzhou 310009
- P. R. China
| | - Yongzhou Hu
- ZJU-ENS Joint Laboratory of Medicinal Chemistry
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
| | - Xiaowu Dong
- ZJU-ENS Joint Laboratory of Medicinal Chemistry
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
| | - Ai e Xu
- Department of Dermatology
- The Third People's Hospital of Hangzhou
- Hangzhou 310009
- P. R. China
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15
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Jin X, Liu M, Chen Z, Mao R, Xiao Q, Gao H, Wei M. Separation and purification of epigallocatechin-3-gallate (EGCG) from green tea using combined macroporous resin and polyamide column chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1002:113-22. [PMID: 26319304 DOI: 10.1016/j.jchromb.2015.07.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 07/29/2015] [Accepted: 07/30/2015] [Indexed: 12/11/2022]
Abstract
Epigallocatechin-3-gallate (EGCG) is a major bioactive ingredient of green tea that produces beneficial neuroprotective effects. In this paper, to optimize the EGCG enrichment, thirteen macroporous resins with different chemical and physical properties were systemically evaluated. Among the thirteen tested resins, the H-bond resin HPD826 exhibited best adsorption/desorption capabilities and desorption ratio, as well as weakest affinity for caffeine. The absorption of EGCG on the HPD826 resin followed the pseudo-second-order kinetics and Langmuir isotherm model. The separation parameters of EGCG were optimized by dynamic adsorption/desorption experiments with the HPD826 resin column. Under the optimal condition, the content of EGCG in the 30% ethanol eluent increased by 5.8-fold from 7.7% to 44.6%, with the recovery yield of 72.1%. After further purification on a polyamide column, EGCG with 74.8% purity was obtained in the 40-50% ethanol fraction with a recovery rate of 88.4%. In addition, EGCG with 95.1% purity could be easily obtained after one-step crystallization in distilled water. Our study suggests that the combined macroporous resin and polyamide column chromatography is a simple method for large-scale separation and purification of EGCG from natural plants for food and pharmaceutical applications.
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Affiliation(s)
- Xin Jin
- School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Mingyan Liu
- School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Zaixing Chen
- School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Ruikun Mao
- School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Qinghuan Xiao
- School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Hua Gao
- School of Pharmacy, China Medical University, Shenyang 110001, China; Division of Pharmacology Laboratory, National Institutes for Food and Drug Control, Beijing 100050, China.
| | - Minjie Wei
- School of Pharmacy, China Medical University, Shenyang 110001, China.
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16
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Wong ILK, Wang BC, Yuan J, Duan LX, Liu Z, Liu T, Li XM, Hu X, Zhang XY, Jiang T, Wan SB, Chow LMC. Potent and Nontoxic Chemosensitizer of P-Glycoprotein-Mediated Multidrug Resistance in Cancer: Synthesis and Evaluation of Methylated Epigallocatechin, Gallocatechin, and Dihydromyricetin Derivatives. J Med Chem 2015; 58:4529-49. [DOI: 10.1021/acs.jmedchem.5b00085] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Iris L. K. Wong
- Department
of Applied Biology and Chemical Technology, and State Key Laboratory
of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| | - Bao-Chao Wang
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Jian Yuan
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Liang-Xing Duan
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Zhen Liu
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Tao Liu
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Xue-Min Li
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Xuesen Hu
- Department
of Applied Biology and Chemical Technology, and State Key Laboratory
of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| | - Xiao-Yu Zhang
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Tao Jiang
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Sheng-Biao Wan
- Key
Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial
Key Laboratory of Glycoscience & Glycotechnology, School of Medicine
and Pharmacy, Ocean University of China, Qingdao, China
| | - Larry M. C. Chow
- Department
of Applied Biology and Chemical Technology, and State Key Laboratory
of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
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17
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Yuan H, Bi K, Chang W, Yue R, Li B, Ye J, Sun Q, Jin H, Shan L, Zhang W. Total synthesis of Daphnodorin A. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Ye JH, Li NN, Lu JL, Zheng XQ, Liang YR. Bulk preparation of (−)-epigallocatechin gallate-rich extract from green tea. FOOD AND BIOPRODUCTS PROCESSING 2014. [DOI: 10.1016/j.fbp.2013.08.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Aeluri M, Chamakuri S, Dasari B, Guduru SKR, Jimmidi R, Jogula S, Arya P. Small Molecule Modulators of Protein–Protein Interactions: Selected Case Studies. Chem Rev 2014; 114:4640-94. [DOI: 10.1021/cr4004049] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Madhu Aeluri
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
| | - Srinivas Chamakuri
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
| | - Bhanudas Dasari
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
| | - Shiva Krishna Reddy Guduru
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
| | - Ravikumar Jimmidi
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
| | - Srinivas Jogula
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
| | - Prabhat Arya
- Dr. Reddy’s Institute
of Life Sciences (DRILS), University of Hyderabad Campus Gachibowli, Hyderabad 500046, India
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20
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Li L, Chang KC, Zhou Y, Shieh B, Ponder J, Abraham AD, Ali H, Snow A, Petrash JM, LaBarbera DV. Design of an amide N-glycoside derivative of β-glucogallin: a stable, potent, and specific inhibitor of aldose reductase. J Med Chem 2013; 57:71-7. [PMID: 24341381 DOI: 10.1021/jm401311d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
β-Glucogallin (BGG), a major component of the Emblica officinalis medicinal plant, is a potent and selective inhibitor of aldose reductase (AKR1B1). New linkages (ether/triazole/amide) were introduced via high yielding, efficient syntheses to replace the labile ester, and an original two-step (90%) preparation of BGG was developed. Inhibition of AKR1B1was assessed in vitro and using transgenic lens organ cultures, which identified the amide linked glucoside (BGA) as a stable, potent, and selective therapeutic lead toward the treatment of diabetic eye disease.
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Affiliation(s)
- Linfeng Li
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Science, University of Colorado Anschutz Medical Campus , Aurora, Colorado 80045, United States
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21
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Yuan H, Bi KJ, Li B, Yue RC, Ye J, Shen YH, Shan L, Jin HZ, Sun QY, Zhang WD. Construction of 2-Substituted-3-Functionalized Benzofurans via Intramolecular Heck Coupling: Application to Enantioselective Total Synthesis of Daphnodorin B. Org Lett 2013; 15:4742-5. [DOI: 10.1021/ol4021095] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Hu Yuan
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Kai-Jian Bi
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Bo Li
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Rong-Cai Yue
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Ji Ye
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Yun-Heng Shen
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Lei Shan
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Hui-Zi Jin
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Qing-Yan Sun
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Wei-Dong Zhang
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China, and Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
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22
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Khandelwal A, Hall JA, Blagg BSJ. Synthesis and structure-activity relationships of EGCG analogues, a recently identified Hsp90 inhibitor. J Org Chem 2013; 78:7859-84. [PMID: 23834230 DOI: 10.1021/jo401027r] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Epigallocatechin-3-gallate (EGCG), the principal polyphenol isolated from green tea, was recently shown to inhibit Hsp90; however, structure-activity relationships for this natural product have not yet been produced. Herein, we report the synthesis and biological evaluation of EGCG analogues to establish structure-activity relationships between EGCG and Hsp90. All four rings as well as the linker connecting the C- and the D-rings were systematically investigated, which led to the discovery of compounds that inhibit Hs90 and display improvement in efficacy over EGCG. Antiproliferative activity of all the analogues was determined against MCF-7 and SKBr3 cell lines and Hsp90 inhibitory activity of the four most potent analogues was further evaluated by Western blot analyses and degradation of Hsp90-dependent client proteins. The prenyl-substituted aryl ester of 3,5-dihydroxychroman-3-ol ring system was identified as a novel scaffold that exhibits Hsp90 inhibitory activity.
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Affiliation(s)
- Anuj Khandelwal
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Malott 4070, Lawrence, Kansas 66045-7563, USA
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23
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Yuan H, Chen H, Jin H, Li B, Yue R, Ye J, Shen Y, Shan L, Sun Q, Zhang W. Deoxygenation of α,β-unsaturated acylphenols through ethyl o-acylphenylcarbonates with Luche reduction. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.109] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Zhang M, Erik Jagdmann G, Van Zandt M, Beckett P, Schroeter H. Enantioselective synthesis of orthogonally protected (2R,3R)-(−)-epicatechin derivatives, key intermediates in the de novo chemical synthesis of (−)-epicatechin glucuronides and sulfates. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.02.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Lin G, Chang L, Liu Y, Xiang Z, Chen J, Yang Z. Enantioselective Total Syntheses of (+)-Gallocatechin, (−)-Epigallocatechin, and 8-C-Ascorbyl-(−)-epigallocatechin. Chem Asian J 2013; 8:700-4. [DOI: 10.1002/asia.201201168] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 11/07/2022]
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26
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Bhanja C, Jena S, Nayak S, Mohapatra S. Organocatalytic tandem Michael addition reactions: A powerful access to the enantioselective synthesis of functionalized chromenes, thiochromenes and 1,2-dihydroquinolines. Beilstein J Org Chem 2012. [PMID: 23209500 DOI: 10.3762/bjoc.8.191;] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Enantioselective organocatalysis has become a field of central importance within asymmetric chemical synthesis and appears to be efficient approach toward the construction of complex chiral molecules from simple achiral materials in one-pot transformations under mild conditions with high stereocontrol. This review addresses the most significant synthetic methods reported on chiral-amine-catalyzed tandem Michael conjugate addition of heteroatom-centered nucleophiles to α,β-unsaturated compounds followed by cyclization reactions for the enantioselective construction of functionalized chiral chromenes, thiochromenes and 1,2-dihydroquinolines in optically enriched forms found in a myriad of bioactive natural products and synthetic compounds.
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Affiliation(s)
- Chittaranjan Bhanja
- Department of Chemistry, Utkal University, Bhubaneswar-751 004, Odisha, India
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27
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Bhanja C, Jena S, Nayak S, Mohapatra S. Organocatalytic tandem Michael addition reactions: A powerful access to the enantioselective synthesis of functionalized chromenes, thiochromenes and 1,2-dihydroquinolines. Beilstein J Org Chem 2012; 8:1668-94. [PMID: 23209500 PMCID: PMC3511000 DOI: 10.3762/bjoc.8.191] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 09/05/2012] [Indexed: 01/27/2023] Open
Abstract
Enantioselective organocatalysis has become a field of central importance within asymmetric chemical synthesis and appears to be efficient approach toward the construction of complex chiral molecules from simple achiral materials in one-pot transformations under mild conditions with high stereocontrol. This review addresses the most significant synthetic methods reported on chiral-amine-catalyzed tandem Michael conjugate addition of heteroatom-centered nucleophiles to α,β-unsaturated compounds followed by cyclization reactions for the enantioselective construction of functionalized chiral chromenes, thiochromenes and 1,2-dihydroquinolines in optically enriched forms found in a myriad of bioactive natural products and synthetic compounds.
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Affiliation(s)
- Chittaranjan Bhanja
- Department of Chemistry, Utkal University, Bhubaneswar-751 004, Odisha, India
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28
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Qin XL, Li XM, Yuan J, Chen D, Jiang T, Dou QP, Chan TH, Wan SB. Semisynthesis of Fluoro-substituted Benzoates of Epi-gallocatechin. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2011.585269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Xu Long Qin
- a Key Laboratory of Marine Drugs , Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao , China
| | - Xue Min Li
- a Key Laboratory of Marine Drugs , Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao , China
| | - Jian Yuan
- a Key Laboratory of Marine Drugs , Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao , China
| | - Di Chen
- b Developmental Therapeutics Program , Barbara Ann Karmanos Cancer Institute, and Department of Oncology, School of Medicine, Wayne State University , Detroit , Michigan , USA
| | - Tao Jiang
- a Key Laboratory of Marine Drugs , Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao , China
| | - Q. Ping Dou
- b Developmental Therapeutics Program , Barbara Ann Karmanos Cancer Institute, and Department of Oncology, School of Medicine, Wayne State University , Detroit , Michigan , USA
| | - Tak Hang Chan
- c Department of Applied Biology and Chemical Technology and the Open Laboratory for Chiral Technology , Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong Polytechnic University , Hong Kong , China
| | - Sheng Biao Wan
- a Key Laboratory of Marine Drugs , Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao , China
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29
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Romanov-Michailidis F, Viton F, Fumeaux R, Lévèques A, Actis-Goretta L, Rein M, Williamson G, Barron D. Epicatechin B-ring conjugates: first enantioselective synthesis and evidence for their occurrence in human biological fluids. Org Lett 2012; 14:3902-5. [PMID: 22799566 DOI: 10.1021/ol3016463] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Herein, the first enantioselective total synthesis of a number of biologically relevant (-)-epicatechin conjugates is described. The success of this synthesis relied on (i) optimized conditions for the stereospecific cyclization step leading to the catechin C ring; on (ii) efficient conjugation reactions; and on (iii) optimized deprotection sequences. These standard compounds have been subsequently used to elucidate for the first time the pattern of (-)-epicatechin conjugates present in four different human biological fluids following (-)-epicatechin absorption.
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30
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Tanaka H, Chino A, Takahashi T. Reagent-controlled stereoselective synthesis of (±)-gallo- and (±)-epigallo-catechin gallates. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.02.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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Stadlbauer S, Ohmori K, Hattori F, Suzuki K. A new synthetic strategy for catechin-class polyphenols: concise synthesis of (−)-epicatechin and its 3-O-gallate. Chem Commun (Camb) 2012; 48:8425-7. [DOI: 10.1039/c2cc33704e] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Law MC, Wong KC, Pang WY, Wong MS, Chan TH. Chemical synthesis and biological study of 4β-carboxymethyl-epiafzelechin acid, an osteoprotective compound from the rhizomes of Drynaria fortunei. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20082a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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33
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Landis-Piwowar K, Bazzi S, Dou QP. Discovery of green tea polyphenol-based proteasome inhibitors — A successful collaboration with Tak-Hang (Bill) Chan. CAN J CHEM 2012. [DOI: 10.1139/v11-097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This article is written to commemorate the contributions of Professor Tak-Hang (Bill) Chan to the field of chemistry and his collaborative efforts that have lead to insights pertaining to cancer cell biology and the development of potential cancer therapeutic agents. This article reviews the chronological scientific findings that evolved from a partnership between Bill Chan and Q. Ping Dou, spanning more than 10 years. While many compounds have been chemically synthesized by the Chan group and biologically scrutinized by the Dou group, the outcomes presented here will focus on green tea polyphenols as tumor proteasome inhibitors and anticancer agents. Furthermore, the biochemical alterations that increase or decrease the therapeutic potential of the polyphenol compounds in human cancer cells will also be discussed.
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Affiliation(s)
- Kristin Landis-Piwowar
- Biomedical Diagnostic and Therapeutic Sciences, School of Health Sciences, Oakland University, Rochester, MI 48309, USA
| | - Saeed Bazzi
- The Developmental Therapeutics Program, Barbara Ann Karmanos Cancer Institute, and Departments of Oncology, Pharmacology, and Pathology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
| | - Q. Ping Dou
- The Developmental Therapeutics Program, Barbara Ann Karmanos Cancer Institute, and Departments of Oncology, Pharmacology, and Pathology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
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34
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You L, Cho EJ, Leavitt J, Ma LC, Montelione GT, Anslyn EV, Krug RM, Ellington A, Robertus JD. Synthesis and evaluation of quinoxaline derivatives as potential influenza NS1A protein inhibitors. Bioorg Med Chem Lett 2011; 21:3007-11. [PMID: 21478016 PMCID: PMC3114437 DOI: 10.1016/j.bmcl.2011.03.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 03/10/2011] [Accepted: 03/11/2011] [Indexed: 01/22/2023]
Abstract
A library of quinoxaline derivatives were prepared to target non-structural protein 1 of influenza A (NS1A) as a means to develop anti-influenza drug leads. An in vitro fluorescence polarization assay demonstrated that these compounds disrupted the dsRNA-NS1A interaction to varying extents. Changes of substituent at positions 2, 3 and 6 on the quinoxaline ring led to variance in responses. The most active compounds (35 and 44) had IC(50) values in the range of low micromolar concentration without exhibiting significant dsRNA intercalation. Compound 44 was able to inhibit influenza A/Udorn/72 virus growth.
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Affiliation(s)
- Lei You
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX, 78712, USA
| | - Eun Jeong Cho
- The Institute for Drug and Diagnostic Development, University of Texas at Austin, Austin, TX, 78712, USA
| | - John Leavitt
- Department of Molecular Genetics and Microbiology, University of Texas at Austin, Austin, TX, 78712, USA
| | - Li-Chung Ma
- Center for Advanced Biotechnology and Medicine, Department of Molecular Biology and Biochemistry, Rutgers The State University of New Jersey, Piscataway, NJ, 08854, USA
| | - Gaetano T. Montelione
- Center for Advanced Biotechnology and Medicine, Department of Molecular Biology and Biochemistry, Rutgers The State University of New Jersey, Piscataway, NJ, 08854, USA
- Department of Biochemistry, Robert Wood Johnson Medical School, Piscataway, NJ, 08854, USA
| | - Eric V. Anslyn
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX, 78712, USA
| | - Robert M. Krug
- Department of Molecular Genetics and Microbiology, University of Texas at Austin, Austin, TX, 78712, USA
| | - Andrew Ellington
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX, 78712, USA
| | - Jon D. Robertus
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX, 78712, USA
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35
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36
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Tanaka H, Yamanouchi M, Miyoshi H, Hirotsu K, Tachibana H, Takahashi T. Solid-phase synthesis of a combinatorial methylated (±)-epigallocatechin gallate library and the growth-inhibitory effects of these compounds on melanoma B16 cells. Chem Asian J 2011; 5:2231-48. [PMID: 20715190 DOI: 10.1002/asia.201000372] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We report on the solid-phase synthesis of a combinatorial methylated (±)-epigallocatechin gallate (EGCG) library and its biological evaluation. Epigallocatechin gallate (EGCG) and its methylated derivatives, which are members of the catechin family, exhibit various anti-cancer effects. The solid-phase synthesis of methylated EGCG involves the preparation of the α-acyloxyketone by the coupling of a solid-supported aldehyde with a ketone and an acid. The subsequent release and reductive etherification reaction of the solid-supported α-acyloxyketone provide the protected EGCG in good total yields. Sixty-four methylated EGCGs were successfully prepared. The growth-inhibitory effects of the methylated EGCG library were also examined. Although methylation of EGCG generally causes reduced growth inhibition, the growth-inhibitory effect of 7-OMe EGCGs was comparable to that of EGCG. The 7-OMe EGCGs are attractive drug candidates because of their enhanced bioavailability.
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Affiliation(s)
- Hiroshi Tanaka
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan.
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Chen JLY, Sperry J, Ip NY, Brimble MA. Natural products targeting telomere maintenance. MEDCHEMCOMM 2011. [DOI: 10.1039/c0md00241k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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EGCG, green tea polyphenols and their synthetic analogs and prodrugs for human cancer prevention and treatment. Adv Clin Chem 2011; 53:155-77. [PMID: 21404918 DOI: 10.1016/b978-0-12-385855-9.00007-2] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cancer-preventive effects of tea polyphenols, especially epigallocatechin-3-gallate (EGCG), have been demonstrated by epidemiological, preclinical, and clinical studies. Green tea polyphenols such as EGCG have the potential to affect multiple biological pathways, including gene expression, growth factor-mediated pathways, the mitogen-activated protein kinase-dependent pathway, and the ubiquitin/proteasome degradation pathway. Therefore, identification of the molecular targets of EGCG should greatly facilitate a better understanding of the mechanisms underlying its anticancer and cancer-preventive activities. Performing structure-activity relationship (SAR) studies could also greatly enhance the discovery of novel tea polyphenol analogs as potential anticancer and cancer-preventive agents. In this chapter, we review the relevant literature as it relates to the effects of natural and synthetic green tea polyphenols and EGCG analogs on human cancer cells and their potential molecular targets as well as their antitumor effects. We also discuss the implications of green tea polyphenols in cancer prevention.
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Sharma PK, He M, Romanczyk LJ, Schroeter H. Synthesis of [2-13C, 4-13C]-(2R,3S)-catechin and [2-13C, 4-13C]-(2R,3R)-epicatechin. J Labelled Comp Radiopharm 2010. [DOI: 10.1002/jlcr.1791] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Krohn K, Ahmed I, John M, Letzel MC, Kuck D. Stereoselective Synthesis of Benzylated Prodelphinidins and Their Diastereomers with Use of the Mitsunobu Reaction in the Preparation of Their Gallocatechin Precursors. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000053] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Huo C, Yang H, Cui QC, Dou QP, Chan TH. Proteasome inhibition in human breast cancer cells with high catechol-O-methyltransferase activity by green tea polyphenol EGCG analogs. Bioorg Med Chem 2010; 18:1252-8. [PMID: 20045338 PMCID: PMC2819655 DOI: 10.1016/j.bmc.2009.12.034] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2009] [Revised: 12/08/2009] [Accepted: 12/10/2009] [Indexed: 10/20/2022]
Abstract
A pro-drug 8 of a synthetic analog 7 is more active in its antiproliferative activity against human breast cancer MDA-MB-231 cells possessing high catechol-O-methyltransferase (COMT) activity than the pro-drugs of EGCG and the analog 5. The higher activity of 8 is attributed to it not being a substrate of COMT.
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Affiliation(s)
- Congde Huo
- Department of Chemistry, McGill University, Montreal, Quebec, Canada
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Ohmori K, Yano T, Suzuki K. General synthesis of epi-series catechins and their 3-gallates: reverse polarity strategy. Org Biomol Chem 2010; 8:2693-6. [DOI: 10.1039/c003464a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Green tea catechins inhibit the endonuclease activity of influenza A virus RNA polymerase. PLOS CURRENTS 2009; 1:RRN1052. [PMID: 20025206 PMCID: PMC2762814 DOI: 10.1371/currents.rrn1052] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 10/13/2009] [Indexed: 11/23/2022]
Abstract
The influenza A RNA polymerase possesses endonuclease activity to digest the host mRNA. Thus this endonuclease domain can be a target of anti-influenza A virus drug. Here we report that green tea catechins inhibit this viral endonuclease activity and that their galloyl group is important for their function. Docking simulations revealed that catechins with galloyl group fit well into the active pocket of the endonuclease domain to enable stable binding. Our results provide useful data that make it possible to refine and optimize catechin-based drug design more readily for stability.
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Ohmori K, Takeda M, Higuchi T, Shono T, Suzuki K. Stereocontolled Synthesis of (−)-Afzelechin: General Route to Catechin-class Polyphenols by Solving an SN2 vs. SN1 Problem. CHEM LETT 2009. [DOI: 10.1246/cl.2009.934] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
The health benefits of green tea and its main constituent (-)-epigallocatechin gallate [(-)-EGCG] have been widely supported by results from epidemiological, cell culture, animal and clinical studies. On the other hand, there are a number of issues, such as stability, bioavailability and metabolic transformations under physiological conditions, facing the development of green tea polyphenols into therapeutic agents. We previously reported that the synthetic peracetate of (-)-EGCG has improved stability and better bioavailability than (-)-EGCG itself and can act as pro-drug under both in vitro and in vivo conditions. Analogs of catechins have been synthesized and their structure activity relationship provides an understanding to the mechanism of proteasome inhibition. Metabolic methylation of catechins leading to methylated (-)-EGCG may alter the biological activities of these compounds.
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Marshall LJ, Cable KM, Botting NP. First synthesis of [1,3,5-13C3]gallic acid. Org Biomol Chem 2009; 7:785-8. [DOI: 10.1039/b813991a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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A novel and efficient procedure for the preparation of allylic alcohols from α,β-unsaturated carboxylic esters using LiAlH4/BnCl. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.11.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Viton F, Landreau C, Rustidge D, Robert F, Williamson G, Barron D. First Total Synthesis of14C-Labeled Procyanidin B2 - A Milestone Toward Understanding Cocoa Polyphenol Metabolism. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800886] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Huo C, Shi G, Lam WH, Chen D, Cui QC, Dou QP, Chan TH. Semi-synthesis and proteasome inhibition of D-ring deoxy analogs of (–)-epigallocatechin gallate (EGCG), the active ingredient of green tea extract. CAN J CHEM 2008. [DOI: 10.1139/v07-141] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A semi-synthetic route to the D-ring analogs of (–)-epigallocatechin gallate (EGCG) from the relatively abundant (–)-epigallocatechin (EGC), isolated from green tea leaves, is described. A natural product (13), found in Cistus salvifolius, its acetate (14) and analog (17) were synthesized by this method. Their inhibitory activities against proteasomes were investigated.Key words: green tea, (–)-epigallocatechin gallate (EGCG), (–)-epigallocatechin (EGC), proteasome inhibition.
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Liu Y, Li X, Lin G, Xiang Z, Xiang J, Zhao M, Chen J, Yang Z. Synthesis of Catechins via Thiourea/AuCl3-Catalyzed Cycloalkylation of Aryl Epoxides. J Org Chem 2008; 73:4625-9. [DOI: 10.1021/jo8005649] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yongxiang Liu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Xiben Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Guang Lin
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Zheng Xiang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Jing Xiang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Mingzhe Zhao
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Jiahua Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
| | - Zhen Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, and Laboratory of Chemical Genomics, Shenzhen Graduate School, and State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100871, China
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