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Anders L, Lindel T. Azido and desamino analogs of the marine natural product oroidin. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2023. [DOI: 10.1515/znb-2023-0305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Abstract
As part of our program on the synthesis and reactivity of the pyrrole-imidazole alkaloids from marine sponges, the synthesis of the 2-azido analog of the key marine natural product oroidin is reported. In addition, desaminooroidin and its alkyne analog were synthesized. Red-Al reduction of a 4-alkynylimidazole intermediate afforded the (E)-alkene, without having to pass via the (Z)-alkene. Coupling of 4,5-dibromopyrrole-2-carboxylic acid with 2-azidoimidazolylprop-2-en-1-amine was best achieved by EDCI-mediated coupling, which was superior to using the corresponding trichloromethylketone. Use of t-BuOK in acetonitrile can be recommended for the coupling of non-azidated alkenyl and alkynylimidazoles. The azido analog of oroidin underwent click cycloadditions to imidazolyltriazoles.
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Affiliation(s)
- Lisa Anders
- TU Braunschweig, Institute of Organic Chemistry , Hagenring 30, 38106 Braunschweig , Germany
| | - Thomas Lindel
- TU Braunschweig, Institute of Organic Chemistry , Hagenring 30, 38106 Braunschweig , Germany
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2
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Anaraki MT, Lysak DH, Downey K, Kock FVC, You X, Majumdar RD, Barison A, Lião LM, Ferreira AG, Decker V, Goerling B, Spraul M, Godejohann M, Helm PA, Kleywegt S, Jobst K, Soong R, Simpson MJ, Simpson AJ. NMR spectroscopy of wastewater: A review, case study, and future potential. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2021; 126-127:121-180. [PMID: 34852923 DOI: 10.1016/j.pnmrs.2021.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 06/13/2023]
Abstract
NMR spectroscopy is arguably the most powerful tool for the study of molecular structures and interactions, and is increasingly being applied to environmental research, such as the study of wastewater. With over 97% of the planet's water being saltwater, and two thirds of freshwater being frozen in the ice caps and glaciers, there is a significant need to maintain and reuse the remaining 1%, which is a precious resource, critical to the sustainability of most life on Earth. Sanitation and reutilization of wastewater is an important method of water conservation, especially in arid regions, making the understanding of wastewater itself, and of its treatment processes, a highly relevant area of environmental research. Here, the benefits, challenges and subtleties of using NMR spectroscopy for the analysis of wastewater are considered. First, the techniques available to overcome the specific challenges arising from the nature of wastewater (which is a complex and dilute matrix), including an examination of sample preparation and NMR techniques (such as solvent suppression), in both the solid and solution states, are discussed. Then, the arsenal of available NMR techniques for both structure elucidation (e.g., heteronuclear, multidimensional NMR, homonuclear scalar coupling-based experiments) and the study of intermolecular interactions (e.g., diffusion, nuclear Overhauser and saturation transfer-based techniques) in wastewater are examined. Examples of wastewater NMR studies from the literature are reviewed and potential areas for future research are identified. Organized by nucleus, this review includes the common heteronuclei (13C, 15N, 19F, 31P, 29Si) as well as other environmentally relevant nuclei and metals such as 27Al, 51V, 207Pb and 113Cd, among others. Further, the potential of additional NMR methods such as comprehensive multiphase NMR, NMR microscopy and hyphenated techniques (for example, LC-SPE-NMR-MS) for advancing the current understanding of wastewater are discussed. In addition, a case study that combines natural abundance (i.e. non-concentrated), targeted and non-targeted NMR to characterize wastewater, along with in vivo based NMR to understand its toxicity, is included. The study demonstrates that, when applied comprehensively, NMR can provide unique insights into not just the structure, but also potential impacts, of wastewater and wastewater treatment processes. Finally, low-field NMR, which holds considerable future potential for on-site wastewater monitoring, is briefly discussed. In summary, NMR spectroscopy is one of the most versatile tools in modern science, with abilities to study all phases (gases, liquids, gels and solids), chemical structures, interactions, interfaces, toxicity and much more. The authors hope this review will inspire more scientists to embrace NMR, given its huge potential for both wastewater analysis in particular and environmental research in general.
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Affiliation(s)
- Maryam Tabatabaei Anaraki
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada
| | - Daniel H Lysak
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada
| | - Katelyn Downey
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada
| | - Flávio Vinicius Crizóstomo Kock
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada; Department of Chemistry, Federal University of São Carlos-SP (UFSCar), São Carlos, SP, Brazil
| | - Xiang You
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada
| | - Rudraksha D Majumdar
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada; Synex Medical, 2 Bloor Street E, Suite 310, Toronto, ON M4W 1A8, Canada
| | - Andersson Barison
- NMR Center, Federal University of Paraná, CP 19081, 81530-900 Curitiba, PR, Brazil
| | - Luciano Morais Lião
- NMR Center, Institute of Chemistry, Universidade Federal de Goiás, Goiânia 74690-900, Brazil
| | | | - Venita Decker
- Bruker Biospin GmbH, Silberstreifen 4, 76287 Rheinstetten, Germany
| | | | - Manfred Spraul
- Bruker Biospin GmbH, Silberstreifen 4, 76287 Rheinstetten, Germany
| | | | - Paul A Helm
- Environmental Monitoring & Reporting Branch, Ontario Ministry of the Environment, Toronto M9P 3V6, Canada
| | - Sonya Kleywegt
- Technical Assessment and Standards Development Branch, Ontario Ministry of the Environment, Conservation and Parks, Toronto, ON M4V 1M2, Canada
| | - Karl Jobst
- Memorial University of Newfoundland, St. John's, NL A1C 5S7, Canada
| | - Ronald Soong
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada
| | - Myrna J Simpson
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada
| | - Andre J Simpson
- Environmental NMR Center, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C1A4, Canada.
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Herath AK, Lovely CJ. Pyrrole carboxamide introduction in the total synthesis of pyrrole-imidazole alkaloids. Org Biomol Chem 2021; 19:2603-2621. [PMID: 33683231 DOI: 10.1039/d0ob02052d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this review various strategies for the incorporation of the signature pyrrole carboxamide moiety in the total syntheses of pyrrole-imidazole alkaloids (PIA) are discussed. These so-called oroidin alkaloids have a broad range of biological activities and display interesting skeletal diversity and complexity. These alkaloids are sponge-derived secondary metabolites and thus far more than 200 members of the PIA family have been isolated over the past few decades. Methods range from classical amide bond forming processes to non-traditional bond formation including the de novo synthesis of the pyrrole itself.
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Affiliation(s)
- Apsara K Herath
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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4
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Bian C, Wang J, Zhou X, Wu W, Guo R. Recent Advances on Marine Alkaloids from Sponges. Chem Biodivers 2020; 17:e2000186. [PMID: 32562510 DOI: 10.1002/cbdv.202000186] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 06/19/2020] [Indexed: 12/19/2022]
Abstract
Alkaloids from marine secondary metabolites have received extensive attention from pharmacists in recent years. Miscellaneous alkaloids derived from marine sponges possessed various pharmacological activities including cytotoxicity, antimicrobial, antioxidant, and so on. Herein, we summarized 149 marine alkaloids from sponges based on their structures and bioactivities reported from 2015 to 2020 and analyzed the production environment of marine sponges with rich alkaloids. Moreover, we discussed biosynthesis routes of pyrrole and guanidine alkaloids from marine sponges Agelas and Monanchora. This article will be beneficial for future research on drugs from marine natural products.
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Affiliation(s)
- Changhao Bian
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, P. R. China
| | - Jiangming Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, P. R. China
| | - Xinyi Zhou
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, P. R. China
| | - Wenhui Wu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, P. R. China.,Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, 201306, P. R. China.,Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai, 201306, P. R. China
| | - Ruihua Guo
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, P. R. China.,Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai, 201306, P. R. China.,Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai, 201306, P. R. China
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5
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Lipson VV, Pavlovska TL, Svetlichnaya NV, Poryvai AA, Gorobets NY, Van der Eycken EV, Konovalova IS, Shiskina SV, Borisov AV, Musatov VI, Mazepa AV. Novel (2-amino-4-arylimidazolyl)propanoic acids and pyrrolo[1,2- c]imidazoles via the domino reactions of 2-amino-4-arylimidazoles with carbonyl and methylene active compounds. Beilstein J Org Chem 2019; 15:1032-1045. [PMID: 31164941 PMCID: PMC6541323 DOI: 10.3762/bjoc.15.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 04/18/2019] [Indexed: 01/28/2023] Open
Abstract
The unexpectedly uncatalyzed reaction between 2-amino-4-arylimidazoles, aromatic aldehydes and Meldrum’s acid has selectively led to the corresponding Knoevenagel–Michael adducts containing a free amino group in the imidazole fragment. The adducts derived from Meldrum’s acid have been smoothly converted into 1,7-diaryl-3-amino-6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-5-ones and 3-(2-amino-4-aryl-1H-imidazol-5-yl)-3-arylpropanoic acids. The interaction of 2-amino-4-arylimidazoles with aromatic aldehydes or isatins and acyclic methylene active compounds has led to the formation of pyrrolo[1,2-c]imidazole-6-carbonitriles, pyrrolo[1,2-с]imidazole-6-carboxylates and spiro[indoline-3,7'-pyrrolo[1,2-c]imidazoles], which can be considered as the analogues of both 3,3’-spirooxindole and 2-aminoimidazole marine sponge alkaloids.
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Affiliation(s)
- Victoria V Lipson
- SSI "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Nauky Ave. 60, Kharkiv 61074, Ukraine.,Antidiabetic Drug Laboratory, SI "V.Ya. Danilevsky Institute for Endocrine Pathology Problems", Academy of Medical Sciences of Ukraine, 10, Alchevskih St., Kharkiv 61002, Ukraine.,Chemistry Department, V.N. Karazin Kharkov National University, Kharkov 61022, Ukraine
| | - Tetiana L Pavlovska
- SSI "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Nauky Ave. 60, Kharkiv 61074, Ukraine.,Chemistry Department, V.N. Karazin Kharkov National University, Kharkov 61022, Ukraine
| | - Nataliya V Svetlichnaya
- Antidiabetic Drug Laboratory, SI "V.Ya. Danilevsky Institute for Endocrine Pathology Problems", Academy of Medical Sciences of Ukraine, 10, Alchevskih St., Kharkiv 61002, Ukraine
| | - Anna A Poryvai
- Chemistry Department, V.N. Karazin Kharkov National University, Kharkov 61022, Ukraine
| | - Nikolay Yu Gorobets
- SSI "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Nauky Ave. 60, Kharkiv 61074, Ukraine
| | - Erik V Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.,Peoples' Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya street, Moscow, 117198, Russia
| | - Irina S Konovalova
- SSI "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Nauky Ave. 60, Kharkiv 61074, Ukraine
| | - Svetlana V Shiskina
- SSI "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Nauky Ave. 60, Kharkiv 61074, Ukraine.,Chemistry Department, V.N. Karazin Kharkov National University, Kharkov 61022, Ukraine
| | | | - Vladimir I Musatov
- SSI "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Nauky Ave. 60, Kharkiv 61074, Ukraine
| | - Alexander V Mazepa
- A.V. Bogatsky physico-chemical institute of the National Academy of Sciences of Ukraine, 86, Lustdorfskaya doroga, 65080, Odessa, Ukraine
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6
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Silva SBL, Oberhänsli F, Tribalat MA, Genta-Jouve G, Teyssié JL, Dechraoui-Bottein MY, Gallard JF, Evanno L, Poupon E, Thomas OP. Insights into the Biosynthesis of Cyclic Guanidine Alkaloids from Crambeidae Marine Sponges. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Siguara B. L. Silva
- UMR Géoazur; Université Nice Sophia Antipolis; CNRS, IRD, Observatoire de la Côte d'Azur; 250 rue Albert Einstein 06560 Valbonne France
- Pharmacognosie et Chimie des Substances Naturelles; BioCIS; Université Paris-Sud; Université Paris-Saclay; CNRS; 92290 Châtenay-Malabry France
| | - François Oberhänsli
- Radioecology Laboratory; International Atomic Energy Agency-Environment Laboratories; MC 98012 Monaco
| | - Marie-Aude Tribalat
- UMR Géoazur; Université Nice Sophia Antipolis; CNRS, IRD, Observatoire de la Côte d'Azur; 250 rue Albert Einstein 06560 Valbonne France
| | - Grégory Genta-Jouve
- Laboratoire de Chimie-Toxicologie Analytique et Cellulaire (C-TAC) UMR CNRS 8638 COMETE; Université Paris-Descartes; 4, avenue de l'Observatoire 75006 Paris France
| | - Jean-Louis Teyssié
- Radioecology Laboratory; International Atomic Energy Agency-Environment Laboratories; MC 98012 Monaco
| | | | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Université Paris-Saclay; 1, avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Laurent Evanno
- Pharmacognosie et Chimie des Substances Naturelles; BioCIS; Université Paris-Sud; Université Paris-Saclay; CNRS; 92290 Châtenay-Malabry France
| | - Erwan Poupon
- Pharmacognosie et Chimie des Substances Naturelles; BioCIS; Université Paris-Sud; Université Paris-Saclay; CNRS; 92290 Châtenay-Malabry France
| | - Olivier P. Thomas
- UMR Géoazur; Université Nice Sophia Antipolis; CNRS, IRD, Observatoire de la Côte d'Azur; 250 rue Albert Einstein 06560 Valbonne France
- Marine Biodiscovery; School of Chemistry and Ryan Institute; National University of Ireland Galway (NUI Galway); University Road H91 TK33 Galway Ireland
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7
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Silva SBL, Oberhänsli F, Tribalat MA, Genta-Jouve G, Teyssié JL, Dechraoui-Bottein MY, Gallard JF, Evanno L, Poupon E, Thomas OP. Insights into the Biosynthesis of Cyclic Guanidine Alkaloids from Crambeidae Marine Sponges. Angew Chem Int Ed Engl 2018; 58:520-525. [DOI: 10.1002/anie.201809539] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 10/22/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Siguara B. L. Silva
- UMR Géoazur; Université Nice Sophia Antipolis; CNRS, IRD, Observatoire de la Côte d'Azur; 250 rue Albert Einstein 06560 Valbonne France
- Pharmacognosie et Chimie des Substances Naturelles; BioCIS; Université Paris-Sud; Université Paris-Saclay; CNRS; 92290 Châtenay-Malabry France
| | - François Oberhänsli
- Radioecology Laboratory; International Atomic Energy Agency-Environment Laboratories; MC 98012 Monaco
| | - Marie-Aude Tribalat
- UMR Géoazur; Université Nice Sophia Antipolis; CNRS, IRD, Observatoire de la Côte d'Azur; 250 rue Albert Einstein 06560 Valbonne France
| | - Grégory Genta-Jouve
- Laboratoire de Chimie-Toxicologie Analytique et Cellulaire (C-TAC) UMR CNRS 8638 COMETE; Université Paris-Descartes; 4, avenue de l'Observatoire 75006 Paris France
| | - Jean-Louis Teyssié
- Radioecology Laboratory; International Atomic Energy Agency-Environment Laboratories; MC 98012 Monaco
| | | | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Université Paris-Saclay; 1, avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Laurent Evanno
- Pharmacognosie et Chimie des Substances Naturelles; BioCIS; Université Paris-Sud; Université Paris-Saclay; CNRS; 92290 Châtenay-Malabry France
| | - Erwan Poupon
- Pharmacognosie et Chimie des Substances Naturelles; BioCIS; Université Paris-Sud; Université Paris-Saclay; CNRS; 92290 Châtenay-Malabry France
| | - Olivier P. Thomas
- UMR Géoazur; Université Nice Sophia Antipolis; CNRS, IRD, Observatoire de la Côte d'Azur; 250 rue Albert Einstein 06560 Valbonne France
- Marine Biodiscovery; School of Chemistry and Ryan Institute; National University of Ireland Galway (NUI Galway); University Road H91 TK33 Galway Ireland
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8
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Lindel T. Chemistry and Biology of the Pyrrole–Imidazole Alkaloids. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 2017; 77:117-219. [DOI: 10.1016/bs.alkal.2016.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Han YP, Song XR, Qiu YF, Zhang HR, Li LH, Jin DP, Sun XQ, Liu XY, Liang YM. Lewis Acid Catalyzed [4 + 3] Cycloaddition of Propargylic Alcohols with Azides. Org Lett 2016; 18:940-3. [DOI: 10.1021/acs.orglett.5b03657] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ya-Ping Han
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xian-Rong Song
- Jiangxi
Key Laboratory of Organic Chemistry, Jiangxi Science Technology Normal University, Nanchang 330013, China
| | - Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Heng-Rui Zhang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Lian-Hua Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Dong-Po Jin
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Qing Sun
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Yuan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- State
Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical
Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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11
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Abstract
Naturally occurring guanidine derivatives frequently display medicinally useful properties. Among them, the higher order pyrrole-imidazole alkaloids, the dragmacidins, the crambescidins/batzelladines, and the saxitoxins/tetradotoxins have stimulated the development of many new synthetic methods over the past decades. We provide here an overview of the syntheses of these cyclic guanidine-containing natural products.
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Affiliation(s)
- Yuyong Ma
- Division of Chemistry, Department of Biochemistry, U T Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
| | - Saptarshi De
- Division of Chemistry, Department of Biochemistry, U T Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
| | - Chuo Chen
- Division of Chemistry, Department of Biochemistry, U T Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
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12
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Wang X, Ma Z, Wang X, De S, Ma Y, Chen C. Dimeric pyrrole-imidazole alkaloids: synthetic approaches and biosynthetic hypotheses. Chem Commun (Camb) 2014; 50:8628-39. [PMID: 24828265 PMCID: PMC4096073 DOI: 10.1039/c4cc02290d] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The pyrrole-imidazole alkaloids are a group of structurally unique and biologically interesting marine sponge metabolites. Among them, the cyclic dimers have caught synthetic chemists' attention particularly. Numerous synthetic strategies have been developed and various biosynthetic hypotheses have been proposed for these fascinating natural products. We discuss herein the synthetic approaches and the biosynthetic insights obtained from these studies.
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Affiliation(s)
- Xiao Wang
- Division of Chemistry, Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA.
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13
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Žula A, Kikelj D, Ilaš J. A convenient strategy for synthesizing the Agelas alkaloids clathrodin, oroidin, and hymenidin and their (un)saturated linker analogs. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Wang X, Morinaka B, Molinski TF. Structures and solution conformational dynamics of stylissamides G and H from the Bahamian sponge Stylissa caribica. JOURNAL OF NATURAL PRODUCTS 2014; 77:625-30. [PMID: 24576291 PMCID: PMC3993948 DOI: 10.1021/np400891s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Two new peptides, stylissamides G and H, were isolated from extracts of a sample of Stylissa caribica collected in deep waters of the Caribbean Sea. A single sample of S. caribica among a collection of 10 samples that were examined by LC-MS appeared to be a different chemotype from the others in that it lacked the familiar pyrrole-2-aminoimidazole alkaloids, stevensine and oroidin, and contained peptides of the stylissamide class. The structures of the title compounds were solved by integrated analysis of the MS and NMR spectra and chemical degradation. The solution conformation of stylissamide G was briefly examined by electronic circular dichroism and temperature-dependent (1)H NMR chemical shifts of amide NH signals, which supported a conformationally rigid macrocycle.
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Affiliation(s)
- Xiao Wang
- Department of Chemistry and Biochemistry and Skaggs School of
Pharmacy and Pharmaceutical
Sciences, University of California, San
Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Brandon
I. Morinaka
- Department of Chemistry and Biochemistry and Skaggs School of
Pharmacy and Pharmaceutical
Sciences, University of California, San
Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Tadeusz F. Molinski
- Department of Chemistry and Biochemistry and Skaggs School of
Pharmacy and Pharmaceutical
Sciences, University of California, San
Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Tel: +1 (858) 534-7115. Fax: +1 (858) 822-0386. E-mail:
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15
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Synthesis and anticancer activity of focused compound libraries from the natural product lead, oroidin. Bioorg Med Chem 2014; 22:1690-9. [PMID: 24508308 DOI: 10.1016/j.bmc.2014.01.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/07/2014] [Accepted: 01/15/2014] [Indexed: 01/23/2023]
Abstract
Oroidin (1), (E)-N-(3-(2-amino-1H-imidazol-4-yl)allyl)-4,5-dibromo-1H-pyrrole-2-carboxamide, is a pyrrole alkaloid isolated from the marine sponge Agelas oroides. Routine screening in a panel of twelve cancer cell lines revealed 1 to be poorly cytotoxic with the 50% growth inhibition concentration (GI50) of 42 μM in MCF-7 (breast) cells and 24 μM in A2780 (ovarian) cells and >50 μM in all other cell lines tested. The development of eight focused libraries comprising thirty compounds total identified N-(biphenyl-4-ylmethyl)-1H-pyrrole-2-carboxamide (4l), N-benzyl-4,5-dibromo-1H-pyrrole-2-carboxamide (5a) and N-(biphenyl-4-ylmethyl)-4,5-dibromo-1H-pyrrole-2-carboxamide (5l) as potent inhibitors of cell growth in our panel of cell lines. Of these compounds GI50 values of <5 μM were observed with 4l against HT29 (colon) and SW480 (colon); 5a against HT29; and 5l against HT29, SW480, MCF-7, A431 (skin), Du145 (prostate), BE2-C (neuroblastoma) and MIA (pancreas) cell lines. As a cancer class, colon cancer appears to be more sensitive to the oroidin series of compounds, with analogue 5l being the most active.
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Rasapalli S, Kumbam V, Dhawane AN, Golen JA, Lovely CJ, Rheingold AL. Total syntheses of oroidin, hymenidin and clathrodin. Org Biomol Chem 2013; 11:4133-7. [DOI: 10.1039/c3ob40668g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Wang X, Wang X, Tan X, Lu J, Cormier KW, Ma Z, Chen C. A biomimetic route for construction of the [4+2] and [3+2] core skeletons of dimeric pyrrole-imidazole alkaloids and asymmetric synthesis of ageliferins. J Am Chem Soc 2012; 134:18834-42. [PMID: 23072663 DOI: 10.1021/ja309172t] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The pyrrole-imidazole alkaloids have fascinated chemists for decades because of their unique structures. The high nitrogen and halogen contents and the densely functionalized skeletons make their laboratory synthesis challenging. We describe herein an oxidative method for accessing the core skeletons of two classes of pyrrole-imidazole dimers. This synthetic strategy was inspired by the putative biosynthesis pathways and its development was facilitated by computational studies. Using this method, we have successfully prepared ageliferin, bromoageliferin, and dibromoageliferin in their natural enantiomeric form.
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Affiliation(s)
- Xiao Wang
- Division of Chemistry, Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, 75390-9038, United States
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Reyes JCP, Romo D. Bioinspired total synthesis of agelastatin A. Angew Chem Int Ed Engl 2012; 51:6870-3. [PMID: 22689447 PMCID: PMC3815442 DOI: 10.1002/anie.201200959] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 05/01/2012] [Indexed: 11/11/2022]
Abstract
A one-two punch: two potentially biosynthetically relevant cyclizations of a keramadine analogue give agelastatin A. A diastereoselective C-ring formation, which proceeds through a 5-exo-trig cyclization or a Nazarov cyclization of a red-colored N-acyliminium intermediate, generates the three contiguous stereocenters of the cyclopentane core. A silica gel assisted cyclization of a nagelamide J analogue gives agelastatin A.
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Affiliation(s)
| | - Daniel Romo
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012 (USA), , Homepage: http://www.chem.tamu.edu/rgroup/romo
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Stout EP, Wang YG, Romo D, Molinski TF. Pyrrole aminoimidazole alkaloid metabiosynthesis with marine sponges Agelas conifera and Stylissa caribica. Angew Chem Int Ed Engl 2012; 51:4877-81. [PMID: 22473581 PMCID: PMC3917718 DOI: 10.1002/anie.201108119] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 02/03/2012] [Indexed: 11/11/2022]
Abstract
Game-SET-match: Pyrrole aminoimidazole alkaloids (PAIs) are metabiosynthesized from chlorinated analogues of oroidin by cell-free enzyme preparations from PAI-producing sponges. Evidence and implications for the biosynthesis of PAIs include putative single-electron transfers (SETs) that promote C-C bond-forming reactions of precursors.
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Affiliation(s)
- E. Paige Stout
- Department of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Science, University of California, San Diego 9500 Gilman Drive, La Jolla, CA 92093 (USA)
| | - Yong-Gang Wang
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, TX 77842 (USA)
| | - Daniel Romo
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, TX 77842 (USA)
| | - Tadeusz F. Molinski
- Department of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Science, University of California, San Diego 9500 Gilman Drive, La Jolla, CA 92093 (USA)
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21
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Stout EP, Morinaka BI, Wang YG, Romo D, Molinski TF. De novo synthesis of benzosceptrin C and nagelamide H from 7-15N-oroidin: implications for pyrrole-aminoimidazole alkaloid biosynthesis. JOURNAL OF NATURAL PRODUCTS 2012; 75:527-30. [PMID: 22455452 PMCID: PMC3694594 DOI: 10.1021/np300051k] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
De novo synthesis of the natural products benzosceptrin C (7) and nagelamide H (8) was achieved using cell-free enzyme preparations from the marine sponges Agelas sceptrum and Stylissa caribica employing synthetic 7-(15)N-oroidin. These studies provide direct experimental evidence to support the long-standing, but untested, hypothesis that oroidin is a precursor to more complex pyrrole-aminoimidazole alkaloids, such as the sceptrins, benzosceptrins, and nagelamides. In addition, a new nagelamide, didebromonagelamide A (5b), was isolated from S. caribica, representing the first report of a nagelamide-like compound from the Caribbean.
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Affiliation(s)
- E. Paige Stout
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358, USA
| | - Brandon I. Morinaka
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358, USA
| | - Yong-Gang Wang
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012, USA
| | - Daniel Romo
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012, USA
| | - Tadeusz F. Molinski
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358, USA
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22
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Pyrrole Aminoimidazole Alkaloid Metabiosynthesis with Marine Sponges Agelas conifera and Stylissa caribica. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Cutignano A, Villani G, Fontana A. One metabolite, two pathways: convergence of polypropionate biosynthesis in fungi and marine molluscs. Org Lett 2012; 14:992-5. [PMID: 22316000 DOI: 10.1021/ol2032653] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Structural similarity or even the identity of polyketide compounds does not necessarily imply unique biosynthesis. Feeding experiments with a (13)C labeled precursor establish that the C(3) units in 7-methyl-cyercene-1 (1) are derived from intact propionate in the marine mollusc Ercolania funerea. The same compound in the terrestrial fungus Leptosphaeria maculans/Phoma lingam is synthesized by an acetate/SAM pathway thus proving for the first time metabolic convergence of polyketide biosynthesis in eukaryotes. Traditional (1)H-(13)C NMR correlation spectroscopy has been successfully applied to estimate (13)C incorporation in biosynthetic experiments.
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Affiliation(s)
- Adele Cutignano
- CNR-Istituto di Chimica Biomolecolare, via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy.
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Sudakow A, Jones PG, Lindel T. Photochemical Arylation of Brønsted Acids with 2-Azidobenzimidazole. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101711] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Troegel B, Lindel T. Microwave-Assisted Fluorination of 2-Acylpyrroles: Synthesis of Fluorohymenidin. Org Lett 2011; 14:468-71. [DOI: 10.1021/ol2029993] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin Troegel
- TU Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Thomas Lindel
- TU Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
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Genta-Jouve G, Cachet N, Holderith S, Oberhänsli F, Teyssié JL, Jeffree R, Al Mourabit A, Thomas OP. Corrigendum: New Insight into Marine Alkaloid Metabolic Pathways: Revisiting Oroidin Biosynthesis. Chembiochem 2011. [DOI: 10.1002/cbic.201100594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Genta-Jouve G, Cachet N, Holderith S, Oberhänsli F, Teyssié JL, Jeffree R, Al Mourabit A, Thomas OP. New Insight into Marine Alkaloid Metabolic Pathways: Revisiting Oroidin Biosynthesis. Chembiochem 2011; 12:2298-301. [DOI: 10.1002/cbic.201100449] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Indexed: 11/10/2022]
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Al-Mourabit A, Zancanella MA, Tilvi S, Romo D. Biosynthesis, asymmetric synthesis, and pharmacology, including cellular targets, of the pyrrole-2-aminoimidazole marine alkaloids. Nat Prod Rep 2011; 28:1229-60. [PMID: 21556392 PMCID: PMC5596510 DOI: 10.1039/c0np00013b] [Citation(s) in RCA: 161] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The pyrrole-2-aminoimidazole (P-2-AI) alkaloids are a growing family of marine alkaloids, now numbering well over 150 members, with high topographical and biological information content. Their intriguing structural complexity, rich and compact stereochemical content, high N to C ratio (~1 : 2), and increasingly studied biological activities are attracting a growing number of researchers from numerous disciplines world-wide. This review surveys advances in this area with a focus on the structural diversity, biosynthetic hypotheses with increasing, but still rare, verifying experimental studies, asymmetric syntheses, and biological studies, including cellular target receptor isolation studies, of this stimulating and exciting alkaloid family.
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Affiliation(s)
- Ali Al-Mourabit
- Centre de Recherche de Gif-sur-Yvette, Institut de Chimie des Substances Naturelles, UPR 2301, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | | | - Supriya Tilvi
- Bio-organic Chemistry laboratory, National Institute of Oceanography, Dona Paula, Goa, India, 403 004
| | - Daniel Romo
- Department of Chemistry, Texas A&M Universtiy College Station, TX 77842-3012
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Mukherjee S, Sivappa R, Yousufuddin M, Lovely CJ. Asymmetric total synthesis of ent-cyclooroidin. Org Lett 2011; 12:4940-3. [PMID: 20929213 DOI: 10.1021/ol1020916] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantiospecific total synthesis of the pyrrole-imidazole natural product cyclooroidin from histidine is described. The key N1-C9 bond is constructed through an intramolecular SN2-type of reaction of a chloro ester. Subsequent imidazole azidation at the 2-position, pyrrole bromination, azide reduction, and deprotection leads to the completion of the synthesis.
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Affiliation(s)
- Sabuj Mukherjee
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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Patel K, Laville R, Martin MT, Tilvi S, Moriou C, Gallard JF, Ermolenko L, Debitus C, Al-Mourabit A. Unprecedented Stylissazoles A-C from Stylissa carteri: Another Dimension for Marine Pyrrole-2-aminoimidazole Metabolite Diversity. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Unprecedented Stylissazoles A-C from Stylissa carteri: Another Dimension for Marine Pyrrole-2-aminoimidazole Metabolite Diversity. Angew Chem Int Ed Engl 2010; 49:4775-9. [DOI: 10.1002/anie.201000444] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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