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Nicolaou KC, Yu R, Lu Z, Alvarez FG. Total Synthesis of Gukulenin B via Sequential Tropolone Functionalizations. J Am Chem Soc 2022; 144:5190-5196. [PMID: 35275627 DOI: 10.1021/jacs.2c01305] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The synthesis of functionalized aromatic compounds is a central theme of research for modern organic chemistry. Despite the increasing finesse in the functionalization of five- and six-membered aromatic rings, their seven-membered-ring sibling, tropolone (2-hydroxy-2,4,6-cycloheptatrien-1-one), remains a challenging target for synthetic derivatization. This challenge primarily emanates from the unique structural and chemical properties of tropolonoid compounds, which often lead to unexpected and undesired reaction outcomes under conditions developed for the functionalizations of other aromatic moieties. Herein, we describe the total synthesis of one of the most complex natural tropolonoids, gukulenin B. Our synthetic route features a series of site-selective aromatic C-H bond functionalizations and C-C bond formations, whose reaction conditions are judiciously tuned to allow uncompromised performance on the tropolone nucleus. The flexibility and modularity of our synthesis are expected to facilitate further synthetic and biological studies of the gukulenin family of cytotoxins. In addition, the methods and tactics developed herein for the functionalization of the tropolone moiety could inspire and enable chemists of multiple disciplines to take advantage of this privileged yet underexplored structural motif.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Ruocheng Yu
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Zhaoyong Lu
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Fernando G Alvarez
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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2
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Caso A, da Silva FB, Esposito G, Teta R, Sala GD, Cavalcanti LPAN, Valverde AL, Martins RCC, Costantino V. Exploring Chemical Diversity of Phorbas Sponges as a Source of Novel Lead Compounds in Drug Discovery. Mar Drugs 2021; 19:667. [PMID: 34940666 PMCID: PMC8708981 DOI: 10.3390/md19120667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 12/30/2022] Open
Abstract
Porifera, commonly referred to as marine sponges, are acknowledged as major producers of marine natural products (MNPs). Sponges of the genus Phorbas have attracted much attention over the years. They are widespread in all continents, and several structurally unique compounds have been identified from this species. Terpenes, mainly sesterterpenoids, are the major secondary metabolites isolated from Phorbas species, even though several alkaloids and steroids have also been reported. Many of these compounds have presented interesting biological activities. Particularly, Phorbas sponges have been demonstrated to be a source of cytotoxic metabolites. In addition, MNPs exhibiting cytostatic, antimicrobial, and anti-inflammatory activities have been isolated and structurally characterized. This review provides an overview of almost 130 secondary metabolites from Phorbas sponges and their biological activities, and it covers the literature since the first study published in 1993 until November 2021, including approximately 60 records. The synthetic routes to the most interesting compounds are briefly outlined.
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Affiliation(s)
- Alessia Caso
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
| | - Fernanda Barbosa da Silva
- Instituto de Química de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-599, Brazil; (F.B.d.S.); (L.P.A.N.C.); (R.C.C.M.)
| | - Germana Esposito
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
| | - Roberta Teta
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
| | - Gerardo Della Sala
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80125 Naples, Italy;
| | - Laura P. A. Nunes Cavalcanti
- Instituto de Química de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-599, Brazil; (F.B.d.S.); (L.P.A.N.C.); (R.C.C.M.)
| | - Alessandra Leda Valverde
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Niterói, Rio de Janeiro 24020-141, Brazil;
| | - Roberto Carlos C. Martins
- Instituto de Química de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-599, Brazil; (F.B.d.S.); (L.P.A.N.C.); (R.C.C.M.)
| | - Valeria Costantino
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
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3
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Elgoud Said AA, Mahmoud BK, Attia EZ, Abdelmohsen UR, Fouad MA. Bioactive natural products from marine sponges belonging to family Hymedesmiidae. RSC Adv 2021; 11:16179-16191. [PMID: 35479127 PMCID: PMC9031984 DOI: 10.1039/d1ra00228g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/26/2021] [Indexed: 12/23/2022] Open
Abstract
Natural products of marine origin exhibit extensive biological activities, and display a vital role in the exploration of new compounds for drug development. Marine sponges have been reported at the top with respect to the discovery of biologically active metabolites that have potential pharmaceutical applications. The family Hymedesmiidae belonging to the Demospongiae class includes ten accepted genera, of which four genera were explored for their bioactive metabolites, namely Phorbas, Hamigera, Hemimycale, and Kirkpatrickia. Genus Phorbas has received more attention due to the isolation of various classes of compounds with unique structures mainly diterpenes, alkaloids, sesterterpenes, and steroids that exhibited diverse biological activities including: antiviral, antimicrobial, and anti-inflammatory, whereas anticancer compounds predominated. This review focuses on the isolated secondary metabolites from family Hymedesmiidae with their biological potential and covers the literature from 1989 to 2020. Natural products of marine origin exhibit extensive biological activities, and display a vital role in the exploration of new compounds for drug development.![]()
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Affiliation(s)
- Asmaa Abo Elgoud Said
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2369075 +2-86-2347759
| | - Basma Khalaf Mahmoud
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2369075 +2-86-2347759
| | - Eman Zekry Attia
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2369075 +2-86-2347759
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2369075 +2-86-2347759.,Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone 61111 New Minia City Egypt
| | - Mostafa Ahmed Fouad
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +2-86-2369075 +2-86-2347759
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4
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Integrated analytical workflow for chromatographic profiling and metabolite annotation of a cytotoxic Phorbas amaranthus extract. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1174:122720. [PMID: 33957353 DOI: 10.1016/j.jchromb.2021.122720] [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: 01/31/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 11/22/2022]
Abstract
Phorbas is a widely studied genus of marine sponge and produce structurally rich cytotoxic metabolites. Still, only few studies have assessed metabolites present in Brazilian species. To circumvent redundancy, in this work, we applied and herein report the use of a scouting liquid chromatographic system associate to the design of experiment produced by the DryLab® software to obtain a fast and efficient chromatographic separation of the active hexane fraction, further enabling untargeted high-resolution mass spectrometry (HRMS) data. To this end, a crude hydroalcoholic extract of the sponge Phorbas amaranthus collected in Brazilian coast was prepared and partitioned. The cytotoxicity of the crude extract and the fractions was evaluated using tumor cell culture models. Fragmentation pathways assembled from HRMS data allowed the annotation of 18 known Phorbas metabolites, while 17 metabolites were inferred based on Global Natural Product Social Molecular Networking (GNPS), matching with a further 29 metabolites annotated through molecular subnetwork. The workflow employed demonstrates that chromatographic method development can be accelerated by the use of automated scouting systems and DryLab®, which is useful for profiling natural product libraries, as well as data curation by molecular clusters and should be incorporated to the tools of natural product chemists.
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5
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Bemis CY, Ungarean CN, Shved AS, Jamieson CS, Hwang T, Lee KS, Houk KN, Sarlah D. Total Synthesis and Computational Investigations of Sesquiterpene-Tropolones Ameliorate Stereochemical Inconsistencies and Resolve an Ambiguous Biosynthetic Relationship. J Am Chem Soc 2021; 143:6006-6017. [DOI: 10.1021/jacs.1c02150] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Christopher Y. Bemis
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Chad N. Ungarean
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Alexander S. Shved
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Cooper S. Jamieson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Taehwan Hwang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Ken S. Lee
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - David Sarlah
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
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6
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Anticancer Activity of Gukulenin A Isolated from the Marine Sponge Phorbas gukhulensis In Vitro and In Vivo. Mar Drugs 2019; 17:md17020126. [PMID: 30795557 PMCID: PMC6410303 DOI: 10.3390/md17020126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/16/2019] [Accepted: 02/18/2019] [Indexed: 01/07/2023] Open
Abstract
Gukulenin A is a bis-tropolone tetraterpenoid isolated from the marine sponge Phorbas gukhulensis. In this study, we examined the anticancer activities of gukulenin A in ovarian cancer cell lines (A2780, SKOV3, OVCAR-3, and TOV-21G) and in an ovarian cancer mouse model generated by injecting A2780 cells. We found that gukulenin A suppressed tumor growth in A2780-bearing mice. Gukulenin A markedly inhibited cell viability in four ovarian cancer cell lines, including the A2780 cell line. Gukulenin A treatment increased the fraction of cells accumulated at the sub G1 phase in a dose-dependent manner and the population of annexin V-positive cells, suggesting that gukulenin A induces apoptotic cell death in ovarian cancer cells. In addition, gukulenin A triggered the activation of caspase-3, -8, and -9, and caspase inhibitors attenuated gukulenin A-induced A2780 cell death. The results suggest that gukulenin A may be a potential therapeutic agent for ovarian cancer.
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7
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Affiliation(s)
- Wen‐Chao Yang
- Institute of Pesticide, School of Horticulture and Plant ProtectionYangzhou University Yangzhou 225009 People's Republic of China
| | - Jian‐Guo Feng
- Institute of Pesticide, School of Horticulture and Plant ProtectionYangzhou University Yangzhou 225009 People's Republic of China
| | - Lei Wu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yong‐Qiang Zhang
- College of Plant ProtectionSouthwest University Chongqing 400716 People's Republic of China
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8
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Abstract
This review on natural products containing a tropolonoid motif highlights analytical methods applied for structural identification and biosynthetic pathway analysis, the ecological context and the pharmacological potential of this compound class.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute
- 07745 Jena
- Germany
| | - David Roman
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute
- 07745 Jena
- Germany
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute
- 07745 Jena
- Germany
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9
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Tymann D, Bednarzick U, Iovkova-Berends L, Hiersemann M. Progress toward the Total Synthesis of Gukulenin A: Photochemically Triggered Two-Carbon Ring Expansion Key to α-Tropolonic Ether Synthesis. Org Lett 2018; 20:4072-4076. [PMID: 29920109 DOI: 10.1021/acs.orglett.8b01629] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ex-chiral-pool synthesis of an advanced gukulenin A precursor from (-)-piperitone is revealed. Key C/C connecting maneuvers to the synthesis of a C2 dissymmetric bis(α-tropolonic) ether building block are a ring-contracting Meinwald rearrangement, a photochemically triggered two-carbon ring expansion, and a homodimerization by cross-metathesis.
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Affiliation(s)
- David Tymann
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
| | - Ulf Bednarzick
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
| | - Ljuba Iovkova-Berends
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
| | - Martin Hiersemann
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
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10
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Zou HX, Li Y, Yang XH, Xiang J, Li JH. Metal-Free Oxidative Decarbonylative [3+2] Annulation of Terminal Alkynes with Tertiary Alkyl Aldehydes toward Cyclopentenes. J Org Chem 2018; 83:8581-8588. [PMID: 29871487 DOI: 10.1021/acs.joc.8b01130] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new metal-free oxidative decarbonylative [3+2] annulation of terminal alkynes with tertiary alkyl aldehydes is presented, which features broad substrate scope and excellent selectivity. The selectivity of this reaction toward cyclopentenes and indenes relies on the nature of the aldehyde substrates. While treatment of tertiary γ,δ-unsaturated aldehydes with common terminal alkynes assembles cyclopentenes, 2-methyl-2-arylpropanals succeed in accessing indenes.
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Affiliation(s)
- Hua-Xu Zou
- State Key Laboratory of Chemo/Biosensing and Chemometrics , Hunan University , Changsha 410082 , China.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Yang Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics , Hunan University , Changsha 410082 , China.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Xu-Heng Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics , Hunan University , Changsha 410082 , China.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Jiannan Xiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics , Hunan University , Changsha 410082 , China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics , Hunan University , Changsha 410082 , China.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China.,State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , China
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11
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Mioso R, Marante FJT, Bezerra RDS, Borges FVP, Santos BVDO, Laguna IHBD. Cytotoxic Compounds Derived from Marine Sponges. A Review (2010-2012). Molecules 2017; 22:E208. [PMID: 28134844 PMCID: PMC6155849 DOI: 10.3390/molecules22020208] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/11/2017] [Accepted: 01/17/2017] [Indexed: 12/20/2022] Open
Abstract
Abstract: This extensive review covers research published between 2010 and 2012 regarding new compounds derived from marine sponges, including 62 species from 60 genera belonging to 33 families and 13 orders of the Demospongia class (Porifera). The emphasis is on the cytotoxic activity that bioactive metabolites from sponges may have on cancer cell lines. At least 197 novel chemical structures from 337 compounds isolated have been found to support this work. Details on the source and taxonomy of the sponges, their geographical occurrence, and a range of chemical structures are presented. The compounds discovered from the reviewed marine sponges fall into mainly four chemical classes: terpenoids (41.9%), alkaloids (26.2%), macrolides (8.9%) and peptides (6.3%) which, along with polyketides, sterols, and others show a range of biological activities. The key sponge orders studied in the reviewed research were Dictyoceratida, Haplosclerida, Tetractinellida, Poecilosclerida, and Agelasida. Petrosia, Haliclona (Haplosclerida), Rhabdastrella (Tetractinellida), Coscinoderma and Hyppospongia (Dictyioceratida), were found to be the most promising genera because of their capacity for producing new bioactive compounds. Several of the new compounds and their synthetic analogues have shown in vitro cytotoxic and pro-apoptotic activities against various tumor/cancer cell lines, and some of them will undergo further in vivo evaluation.
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Affiliation(s)
- Roberto Mioso
- Laboratory of Enzymology - LABENZ, Department of Biochemistry, Federal University of Pernambuco, Recife 50670-901, Pernambuco, Brazil.
| | - Francisco J Toledo Marante
- Department of Chemistry, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria 35017, Spain.
| | - Ranilson de Souza Bezerra
- Laboratory of Enzymology - LABENZ, Department of Biochemistry, Federal University of Pernambuco, Recife 50670-901, Pernambuco, Brazil.
| | - Flávio Valadares Pereira Borges
- Post-Graduation Program in Natural Products and Synthetic Bioactives, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil.
| | - Bárbara V de Oliveira Santos
- Post-Graduation Program in Development and Technological Innovation in Medicines, Department of Pharmaceutical Sciences, Federal University of Paraiba, João Pessoa 58051-900, Paraíba, Brazil.
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12
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Affiliation(s)
- Xiaojun Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
| | - Dongsheng Xue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
| | - Cheng Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
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13
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Li X, Xue D, Wang C, Gao S. Total Synthesis of the Hamigerans. Angew Chem Int Ed Engl 2016; 55:9942-6. [DOI: 10.1002/anie.201604070] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaojun Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
| | - Dongsheng Xue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
| | - Cheng Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering; East China Normal University; 3663N Zhongshan Road Shanghai 200062 China
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14
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Marcos I, Moro R, Gil-Mesón A, Díez D. 7-6-5 Tricarbocyclic Diterpenes. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2016. [DOI: 10.1016/b978-0-444-63602-7.00005-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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15
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Lee K, Rho JR. A new sesterterpenoid showing anti-inflammatory effect from the Marine Sponge Haliclona species. JOURNAL OF THE KOREAN MAGNETIC RESONANCE SOCIETY 2015. [DOI: 10.6564/jkmrs.2015.19.1.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Murarka S, Jia ZJ, Merten C, Daniliuc CG, Antonchick AP, Waldmann H. Rhodium(II)-Catalyzed Enantioselective Synthesis of Troponoids. Angew Chem Int Ed Engl 2015; 54:7653-6. [DOI: 10.1002/anie.201502233] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Indexed: 12/17/2022]
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17
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Murarka S, Jia ZJ, Merten C, Daniliuc CG, Antonchick AP, Waldmann H. Rhodium(II)-Catalyzed Enantioselective Synthesis of Troponoids. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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18
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Kats-Kagan R, Herzon SB. The Discovery of a Novel Route to Highly Substituted α-Tropolones Enables Expedient Entry to the Core of the Gukulenins. Org Lett 2015; 17:2030-3. [DOI: 10.1021/acs.orglett.5b00841] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roman Kats-Kagan
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Seth B. Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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19
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Lee Y, Wang W, Kim H, Giri AG, Won DH, Hahn D, Baek KR, Lee J, Yang I, Choi H, Nam SJ, Kang H. Phorbaketals L–N, cytotoxic sesterterpenoids isolated from the marine sponge of the genus Phorbas. Bioorg Med Chem Lett 2014; 24:4095-8. [DOI: 10.1016/j.bmcl.2014.07.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 07/10/2014] [Accepted: 07/23/2014] [Indexed: 10/25/2022]
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20
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Jeon JE, Liao L, Kim H, Sim CJ, Oh DC, Oh KB, Shin J. Cytotoxic diterpenoid pseudodimers from the Korean sponge Phorbas gukhulensis. JOURNAL OF NATURAL PRODUCTS 2013; 76:1679-1685. [PMID: 24025124 DOI: 10.1021/np400389c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Four new cytotoxic diterpenoid pseudodimers (2-5), along with a previously reported one, gukulenin A (1), were isolated from the marine sponge Phorbas gukhulensis collected off the coast of Gagu-do, Korea. These novel compounds, designated gukulenins C-F (2-5), were determined by extensive spectroscopic analyses to be pseudodimers of the gagunins, like gukulenin A. The termini of the tropolone-containing side chains in gukulenins C-E (2-4) were found to have diverse modifications involving acetamides or taurine, whereas gukulenin F (5) was formed from 1 by the ring-opening of a cyclic hemiketal. The relative and absolute configurations were assigned by Murata's and modified Snatzke's methods using a HETLOC experiment and a CD measurement of a dimolybdenum complex, respectively. All of these compounds exhibited significant cytotoxicity against the K562 and A549 cell lines.
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Affiliation(s)
- Ju-eun Jeon
- Natural Products Research Institute, College of Pharmacy, Seoul National University , San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
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Pettit GR, Tang Y, Zhang Q, Bourne GT, Arm CA, Leet JE, Knight JC, Pettit RK, Chapuis JC, Doubek DL, Ward FJ, Weber C, Hooper JNA. Isolation and structures of axistatins 1-3 from the Republic of Palau marine sponge Agelas axifera Hentschel . JOURNAL OF NATURAL PRODUCTS 2013; 76:420-4. [PMID: 23410078 PMCID: PMC3616417 DOI: 10.1021/np300828y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
An investigation begun in 1979 directed at the Republic of Palau marine sponge Agelas axifera Hentschel for cancer cell growth inhibitory constituents subsequently led to the isolation of three new pyrimidine diterpenes designated axistatins 1 (1), 2 (2), and 3 (3), together with the previously reported formamides 4, 5, and agelasine F (6). The structures were elucidated by analysis of 2D-NMR spectra and by HRMS. All of the isolated compounds were found to be moderate inhibitors of cancer cell growth. Axistatins 1-3 (1-3), formamide 4, and agelasine F (6) also exhibited antimicrobial activity.
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Affiliation(s)
- George R Pettit
- Cancer Research Institute and Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, Arizona 85287-1604, USA.
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22
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Recent advances in marine drug research. Biotechnol Adv 2013; 31:1826-45. [PMID: 23500952 DOI: 10.1016/j.biotechadv.2013.02.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 02/18/2013] [Accepted: 02/23/2013] [Indexed: 02/04/2023]
Abstract
Structures and properties of promising marine anti-cancer, anti-inflammation and anti-infectious (HIV, HSV, malaria, leishmania) compounds reported during 2008-2011 are discussed. Wherever possible, attempts have also been made to highlight their possible biogenesis or structure-activity relationships (SAR). Since the stress is on identifying and short-listing potential drug molecules, this review is restricted to only those compounds exhibiting promising in vitro activity, the arbitrary cut off being IC50<15 μM, reported during the above period.
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Wang W, Lee Y, Lee TG, Mun B, Giri AG, Lee J, Kim H, Hahn D, Yang I, Chin J, Choi H, Nam SJ, Kang H. Phorone A and Isophorbasone A, Sesterterpenoids Isolated from the Marine Sponge Phorbas sp. Org Lett 2012; 14:4486-9. [DOI: 10.1021/ol3019874] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Weihong Wang
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Yehee Lee
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Tae Gu Lee
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Bora Mun
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Awadut G. Giri
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Jihye Lee
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Hiyoung Kim
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Dongyup Hahn
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Inho Yang
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Jungwook Chin
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Hyukjae Choi
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Sang-Jip Nam
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
| | - Heonjoong Kang
- Center for Marine Natural Products and Drug Discovery, School of Earth and Environmental Sciences, and Research Institute of Oceanography, Seoul National University, NS-80, Seoul, 151-747, Korea, and College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 540-950, Korea
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Lavoie S, Legault J, Gauthier C, Mshvildadze V, Mercier S, Pichette A. Abibalsamins A and B, Two New Tetraterpenoids from Abies balsamea Oleoresin. Org Lett 2012; 14:1504-7. [DOI: 10.1021/ol300237f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Serge Lavoie
- Université du Québec à Chicoutimi, Chaire de Recherche sur les Agents Anticancéreux d’Origine Naturelle, Laboratoire d’Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, 555 boul. de l’Université, Chicoutimi (Québec), Canada, G7H 2B1, and Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, 86022 Poitiers, France
| | - Jean Legault
- Université du Québec à Chicoutimi, Chaire de Recherche sur les Agents Anticancéreux d’Origine Naturelle, Laboratoire d’Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, 555 boul. de l’Université, Chicoutimi (Québec), Canada, G7H 2B1, and Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, 86022 Poitiers, France
| | - Charles Gauthier
- Université du Québec à Chicoutimi, Chaire de Recherche sur les Agents Anticancéreux d’Origine Naturelle, Laboratoire d’Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, 555 boul. de l’Université, Chicoutimi (Québec), Canada, G7H 2B1, and Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, 86022 Poitiers, France
| | - Vakhtang Mshvildadze
- Université du Québec à Chicoutimi, Chaire de Recherche sur les Agents Anticancéreux d’Origine Naturelle, Laboratoire d’Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, 555 boul. de l’Université, Chicoutimi (Québec), Canada, G7H 2B1, and Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, 86022 Poitiers, France
| | - Sylvain Mercier
- Université du Québec à Chicoutimi, Chaire de Recherche sur les Agents Anticancéreux d’Origine Naturelle, Laboratoire d’Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, 555 boul. de l’Université, Chicoutimi (Québec), Canada, G7H 2B1, and Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, 86022 Poitiers, France
| | - André Pichette
- Université du Québec à Chicoutimi, Chaire de Recherche sur les Agents Anticancéreux d’Origine Naturelle, Laboratoire d’Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, 555 boul. de l’Université, Chicoutimi (Québec), Canada, G7H 2B1, and Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, 86022 Poitiers, France
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Abstract
Covering: 2010. Previous review: Nat. Prod. Rep., 2011, 28, 196. This review covers the literature published in 2010 for marine natural products, with 895 citations (590 for the period January to December 2010) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1003 for 2010), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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