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Parte LG, Fernández S, Sandonís E, Guerra J, López E. Transition-Metal-Catalyzed Transformations for the Synthesis of Marine Drugs. Mar Drugs 2024; 22:253. [PMID: 38921564 PMCID: PMC11204618 DOI: 10.3390/md22060253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/23/2024] [Accepted: 05/25/2024] [Indexed: 06/27/2024] Open
Abstract
Transition metal catalysis has contributed to the discovery of novel methodologies and the preparation of natural products, as well as new chances to increase the chemical space in drug discovery programs. In the case of marine drugs, this strategy has been used to achieve selective, sustainable and efficient transformations, which cannot be obtained otherwise. In this perspective, we aim to showcase how a variety of transition metals have provided fruitful couplings in a wide variety of marine drug-like scaffolds over the past few years, by accelerating the production of these valuable molecules.
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Affiliation(s)
- Lucía G. Parte
- Department of Organic Chemistry, Science Faculty, University of Valladolid (UVa), Paseo de Belén 7, 47011 Valladolid, Spain; (L.G.P.); (E.S.)
| | - Sergio Fernández
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London (QMUL), Mile End Road, London E1 4NS, UK;
| | - Eva Sandonís
- Department of Organic Chemistry, Science Faculty, University of Valladolid (UVa), Paseo de Belén 7, 47011 Valladolid, Spain; (L.G.P.); (E.S.)
| | - Javier Guerra
- Department of Organic Chemistry, Science Faculty, University of Valladolid (UVa), Paseo de Belén 7, 47011 Valladolid, Spain; (L.G.P.); (E.S.)
| | - Enol López
- Department of Organic Chemistry, ITAP, School of Engineering (EII), University of Valladolid (UVa), Dr Mergelina, 47002 Valladolid, Spain
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2
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Janzing NBM, Senges CHR, Dietze P, Haltli B, Marchbank DH, Kerr RG, Bandow JE. Mechanism of action of pseudopteroxazole and pseudopterosin G: Diterpenes from marine origin. Proteomics 2024; 24:e2300390. [PMID: 38158717 DOI: 10.1002/pmic.202300390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Pseudopteroxazole (Ptx) and the pseudopterosins are marine natural products with promising antibacterial potential. While Ptx has attracted interest for its antimycobacterial activity, pseudopterosins are active against several clinically relevant pathogens. Both compound classes exhibit low cytotoxicity and accessibility to targeted synthesis, yet their antibacterial mechanisms remain elusive. In this study, we investigated the modes of action of Ptx and pseudopterosin G (PsG) in Bacillus subtilis employing an unbiased approach that combines gel-based proteomics with a mathematical similarity analysis of response profiles. Proteomic responses to sublethal concentrations of Ptx and PsG were compared to a library of antibiotic stress response profiles revealing that both induce a stress response characteristic for agents targeting the bacterial cell envelope by interfering with membrane-bound steps of cell wall biosynthesis. Microscopy-based assays confirmed that both compounds compromise the integrity of the bacterial cell wall without disrupting the membrane potential. Furthermore, LC-MSE analysis showed that the greater potency of PsG against B. subtilis, reflected in a lower MIC and a more pronounced proteomic response, may be rooted in a more effective association with and penetration of B. subtilis cells. We conclude that Ptx and PsG target the integrity of the gram-positive cell wall.
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Affiliation(s)
- Niklas B M Janzing
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Christoph H R Senges
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Pascal Dietze
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Bradley Haltli
- University of Prince Edward Island, Charlottetown, PE, Canada
- Nautilus Biosciences Croda, Charlottetown, Canada
| | - Douglas H Marchbank
- University of Prince Edward Island, Charlottetown, PE, Canada
- Nautilus Biosciences Croda, Charlottetown, Canada
| | - Russell G Kerr
- University of Prince Edward Island, Charlottetown, PE, Canada
| | - Julia E Bandow
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
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3
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Movahhed S, Westphal J, Kempa A, Schumacher CE, Sperlich J, Neudörfl J, Teusch N, Hochgürtel M, Schmalz H. Total Synthesis of (+)-Erogorgiaene and the Pseudopterosin A-F Aglycone via Enantioselective Cobalt-Catalyzed Hydrovinylation. Chemistry 2021; 27:11574-11579. [PMID: 34096655 PMCID: PMC8456859 DOI: 10.1002/chem.202101863] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Indexed: 12/04/2022]
Abstract
Due to their pronounced bioactivity and limited availability from natural resources, metabolites of the soft coral Pseudopterogorgia elisabethae, such as erogorgiaene and the pseudopterosines, represent important target molecules for chemical synthesis. We have now developed a particularly short and efficient route towards these marine diterpenes exploiting an operationally convenient enantioselective cobalt-catalyzed hydrovinylation as the chirogenic step. Other noteworthy C-C bond forming transformations include diastereoselective Lewis acid-mediated cyclizations, a Suzuki coupling and a carbonyl ene reaction. Starting from 4-methyl-styrene the anti-tubercular agent (+)-erogorgiaene (>98 % ee) was prepared in only 7 steps with 46 % overall yield. In addition, the synthesis of the pseudopterosin A aglycone was achieved in 12 steps with 30 % overall yield and, surprisingly, was found to exhibit a similar anti-inflammatory activity (inhibition of LPS-induced NF-κB activation) as a natural mixture of pseudopterosins A-D or iso-pseudopterosin A, prepared by β-D-xylosylation of the synthetic aglycone.
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Affiliation(s)
| | | | - Alexander Kempa
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
| | | | - Julia Sperlich
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
| | | | - Nicole Teusch
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
| | - Matthias Hochgürtel
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
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4
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Application of marine natural products in drug research. Bioorg Med Chem 2021; 35:116058. [PMID: 33588288 DOI: 10.1016/j.bmc.2021.116058] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/31/2021] [Accepted: 02/02/2021] [Indexed: 12/14/2022]
Abstract
New diseases are emerging as the environment changes, so drug manufacturers are always on the lookout for new resources to develop effective and safe drugs. In recent years, many bioactive substances have been produced in the marine environment, which represents an alternative resource for new drugs used to combat major diseases such as cancer or inflammation. Many marine-derived medicinal substances are in preclinical or early stage of clinical development, and some marine drugs have been put on the market, such as ET743 (Yondelis®). This review presents the sources, activities, mechanisms of action and syntheses of bioactive substances based on marine natural products in clinical trials and on the market, which is helpful to understand the progress of drug research by application of marine natural products.
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5
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Li WW, Zheng MY, Guo Y, Zhang ZT, Han JC, Jiang YP, Wang Q, Wang M, Ji MX, Zhang YT. Construction of C-glycosides of heterocycles containing the pyrimidin-2-amine or the 1 H-pyrazolo[3,4- b]pyridine moiety and their biological evaluation for anticancer activities. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819856942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of novel C-glycosides of heterocyclic derivatives containing a pyrimidin-2-amine or a 1 H-pyrazolo[3,4- b]pyridine moiety were synthesized using condensation reactions of the substituted puerarin with guanidine or 3-amino-5-hydroxypyrazole in methyl alcohol. Their chemical structures were characterized by Fourier-transform infrared spectroscopy, nuclear magnetic resonance, and high-resolution mass spectrometry. In addition, their biological activity has been demonstrated by in vitro evaluation against the human leukemia cells K562 and human prostate cancer cells PC-3 by MTT-based assays, using the commercially available standard drug of cis-platin as a positive control. The results also demonstrated that most of the compounds showed considerable cytotoxicity to these two cell lines of K562 and PC-3, and indicated that novel C-glycosides of heterocyclic derivatives may be potential leads for further biological screenings and may generate drug-like molecules.
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Affiliation(s)
- Wu-Wu Li
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Min-Yan Zheng
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Ying Guo
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Zun-Ting Zhang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, P.R. China
| | - Ji-Chang Han
- Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Land and Resources of the People’s Republic of China, Xi’an, P.R. China
| | - Yan-Ping Jiang
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Qiao Wang
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Mei Wang
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Ming-Xiang Ji
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
| | - Yu-Tao Zhang
- College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, P.R. China
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6
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Penjarla TR, Kundarapu M, Baquer SM, Bhattacharya A. Total synthesis of the plant alkaloid racemic microthecaline A: first example of a natural product bearing a tricyclic quinoline-serrulatane scaffold. RSC Adv 2019; 9:23289-23294. [PMID: 35514523 PMCID: PMC9067311 DOI: 10.1039/c9ra04675e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 07/22/2019] [Indexed: 02/02/2023] Open
Abstract
The first total synthesis of racemic microthecaline A, a quinoline serrulatane alkaloid, isolated from the Australian desert plant Eremophila microtheca is described. The natural product was synthesized in ten steps, starting from ethyl 4-bromo-6-methoxy-8-methylquinoline-3-carboxylate in 8% overall yield. First total synthesis of quinoline-serrulatane alkaloid microthecaline A.![]()
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Affiliation(s)
- Thirupathi Reddy Penjarla
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani (Hyderabad Campus)
- Hyderabad-500078
- India
- Department of Medicinal Chemistry
| | - Maheshwar Kundarapu
- Department of Medicinal Chemistry
- GVK Biosciences Pvt. Ltd
- Hyderabad 500076
- India
| | - Syed Mohd. Baquer
- Department of Medicinal Chemistry
- GVK Biosciences Pvt. Ltd
- Hyderabad 500076
- India
| | - Anupam Bhattacharya
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani (Hyderabad Campus)
- Hyderabad-500078
- India
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7
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Tenneti S, Biswas S, Cox GA, Mans DJ, Lim HJ, RajanBabu TV. Broadly Applicable Stereoselective Syntheses of Serrulatane, Amphilectane Diterpenes, and Their Diastereoisomeric Congeners Using Asymmetric Hydrovinylation for Absolute Stereochemical Control. J Am Chem Soc 2018; 140:9868-9881. [PMID: 30001133 PMCID: PMC6082684 DOI: 10.1021/jacs.8b03549] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A stereogenic center, placed at an exocyclic location next to a chiral carbon in a ring to which it is attached, is a ubiquitous structural motif seen in many bioactive natural products, including di- and triterpenes and steroids. Installation of these centers has been a long-standing problem in organic chemistry. Few classes of compounds illustrate this problem better than serrulatanes and amphilectanes, which carry multiple methyl-bearing exocyclic chiral centers. Nickel-catalyzed asymmetric hydrovinylation (AHV) of vinylarenes and 1,3-dienes such as 1-vinylcycloalkenes provides an exceptionally facile way of introducing these chiral centers. This Article documents our efforts to demonstrate the generality of AHV to access not only the natural products but also their various diastereoisomeric derivatives. Key to success here is the availability of highly tunable phosphoramidite Ni(II) complexes useful for overcoming the inherent selectivity of the chiral intermediates. The yields for hydrovinylation (HV) reactions are excellent, and selectivities are in the range of 92-99% for the desired isomers. Discovery of novel, configurationally fluxional, yet sterically less demanding 2,2'-biphenol-derived phosphoramidite Ni complexes (fully characterized by X-ray) turned out to be critical for success in several HV reactions. We also report a less spectacular yet equally important role of solvents in a metal-ammonia reduction for the installation of a key benzylic chiral center. Starting with simple oxygenated styrene derivatives, we iteratively install the various exocyclic chiral centers present in typical serrulatane [e.g., a (+)- p-benzoquinone natural product, elisabethadione, nor-elisabethadione, helioporin D, a known advanced intermediate for the synthesis of colombiasin and elisapterosin] and amphilectane [e.g., A-F, G-J, and K,L pseudopterosins] derivatives. A concise table showing various synthetic approaches to these molecules is included in the Supporting Information. Our attempts to synthesize a hitherto elusive target, elisabethin A, led to a stereoselective, biomimetic route to pseudopterosin A-F aglycones.
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Affiliation(s)
| | | | | | | | | | - T. V. RajanBabu
- Department of Chemistry and Biochemistry, 100 West 18th Avenue, The Ohio State University, Columbus, Ohio 43210 United States
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8
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Yu X, Su F, Liu C, Yuan H, Zhao S, Zhou Z, Quan T, Luo T. Enantioselective Total Syntheses of Various Amphilectane and Serrulatane Diterpenoids via Cope Rearrangements. J Am Chem Soc 2016; 138:6261-70. [DOI: 10.1021/jacs.6b02624] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xuerong Yu
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Fan Su
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Chang Liu
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Haosen Yuan
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Shan Zhao
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhiyao Zhou
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Tianfei Quan
- Peking-Tsinghua
Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Tuoping Luo
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Peking-Tsinghua
Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
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9
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Marine Diterpenoids as Potential Anti-Inflammatory Agents. Mediators Inflamm 2015; 2015:263543. [PMID: 26538822 PMCID: PMC4619941 DOI: 10.1155/2015/263543] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/06/2015] [Indexed: 02/06/2023] Open
Abstract
The inflammatory response is a highly regulated process, and its dysregulation can lead to the establishment of chronic inflammation and, in some cases, to death. Inflammation is the cause of several diseases, including rheumatoid arthritis, inflammatory bowel diseases, multiple sclerosis, and asthma. The search for agents inhibiting inflammation is a great challenge as the inflammatory response plays an important role in the defense of the host to infections. Marine invertebrates are exceptional sources of new natural products, and among those diterpenoids secondary metabolites exhibit notable anti-inflammatory properties. Novel anti-inflammatory diterpenoids, exclusively produced by marine organisms, have been identified and synthetic molecules based on those structures have been obtained. The anti-inflammatory activity of marine diterpenoids has been attributed to the inhibition of Nuclear Factor-κB activation and to the modulation of arachidonic acid metabolism. However, more research is necessary to describe the mechanisms of action of these secondary metabolites. This review is a compilation of marine diterpenoids, mainly isolated from corals, which have been described as potential anti-inflammatory molecules.
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10
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Santos EA, Quintela AL, Ferreira EG, Sousa TS, Pinto FDCL, Hajdu E, Carvalho MS, Salani S, Rocha DD, Wilke DV, Torres MDCM, Jimenez PC, Silveira ER, La Clair JJ, Pessoa ODL, Costa-Lotufo LV. Cytotoxic Plakortides from the Brazilian Marine Sponge Plakortis angulospiculatus. JOURNAL OF NATURAL PRODUCTS 2015; 78:996-1004. [PMID: 25879576 DOI: 10.1021/np5008944] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Three new plakortides, 7,8-dihydroplakortide E (1), 2, and 10, along with known natural products 3, 4, spongosoritin A (5), 6-8, and plakortide P (9), were isolated from Brazilian specimens of Plakortis angulospiculatus. Compounds 2, 3, 5, and 7-9 displayed cytotoxic activities with IC50 values ranging from 0.2 to 10 μM. Compounds that contained a dihydrofuran ring were generally less active and displayed time dependence in their activity. The activities of compounds 2 and 7-9, carboxylic acids bearing a common six-membered endoperoxide, were higher overall than for compounds 3 and 5. The modes underlying the cytotoxic actions of plakortides 2, 3, 5, 7, and 9 were further investigated using HCT-116 cells. While dihydrofurans 3 and 5 induce a G0/G1 arrest, six-membered peroxides 2, 7, and 9 delivered a G2/M arrest and an accumulation of mitotic figures, indicating a distinctly different antimitotic response. Confocal analysis indicated that microtubules were not altered after treatment with 2, 7, or 9, therein suggesting that the mitotic arrest may be unrelated to cytoskeletal targets. Overall, we find that two related classes of natural products obtained from the same extract offer cytostatic activity, yet they do so through discrete pathways.
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Affiliation(s)
- Evelyne A Santos
- †Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza, 60.430-270, Brazil
| | - Amanda L Quintela
- ‡Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, 60.021-970, Brazil
| | - Elthon G Ferreira
- §Instituto de Ciências do Mar, LABOMAR, Universidade Federal do Ceará, Fortaleza, 60.165-081, Brazil
| | - Thiciana S Sousa
- ‡Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, 60.021-970, Brazil
| | | | - Eduardo Hajdu
- ⊥Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, 20.940-040, Brazil
| | | | - Sula Salani
- ⊥Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, 20.940-040, Brazil
| | - Danilo D Rocha
- †Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza, 60.430-270, Brazil
| | - Diego V Wilke
- †Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza, 60.430-270, Brazil
| | - Maria da Conceição M Torres
- ‡Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, 60.021-970, Brazil
| | - Paula C Jimenez
- §Instituto de Ciências do Mar, LABOMAR, Universidade Federal do Ceará, Fortaleza, 60.165-081, Brazil
| | - Edilberto R Silveira
- ‡Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, 60.021-970, Brazil
| | - James J La Clair
- ∥Xenobe Research Institute, P.O. Box 3052, San Diego, California 92163-1052, United States
| | - Otília Deusdênia L Pessoa
- ‡Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, 60.021-970, Brazil
| | - Letícia V Costa-Lotufo
- †Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza, 60.430-270, Brazil
- §Instituto de Ciências do Mar, LABOMAR, Universidade Federal do Ceará, Fortaleza, 60.165-081, Brazil
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11
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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12
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Souza MTDS, Almeida JRGDS, Araujo AADS, Duarte MC, Gelain DP, Moreira JCF, dos Santos MRV, Quintans-Júnior LJ. Structure–activity relationship of terpenes with anti-inflammatory profile – a systematic review. Basic Clin Pharmacol Toxicol 2015; 115:244-56. [PMID: 25275147 DOI: 10.1111/bcpt.12221] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Inflammation is a complex biological response that in spite of having available treatments, their side effects limit their usefulness. Because of this, natural products have been the subject of incessant studies, among which the class of terpenes stands out. They have been the source of study for the development of anti-inflammatory drugs, once their chemical diversity is well suited to provide skeleton for future anti-inflammatory drugs. This systematic review reports the studies present in the literature that evaluate the anti-inflammatory activity of terpenes suffering any change in their structures, assessing whether these changes also brought changes in their effects. The search terms anti-inflammatory agents, terpenes, and structure–activity relationship were used to retrieve English language articles in SCOPUS, PUBMED and EMBASE published between January 2002 and August 2013. Twenty-seven papers were found concerning the structural modification of terpenes with the evaluation of antiinflammatory activity. The data reviewed here suggest that modified terpenes are an interesting tool for the development of new anti-inflammatory drugs.
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13
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Abstract
The 15 published total syntheses of the pseudopterosins are reviewed, with focus on strategic considerations and an emphasis on ring formation.
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14
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Mehta VP, Greaney MF. S-, N-, and Se-Difluoromethylation Using Sodium Chlorodifluoroacetate. Org Lett 2013; 15:5036-9. [DOI: 10.1021/ol402370f] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vaibhav P. Mehta
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Michael F. Greaney
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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15
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Choi H, Mascuch SJ, Villa FA, Byrum T, Teasdale ME, Smith JE, Preskitt LB, Rowley DC, Gerwick L, Gerwick WH. Honaucins A-C, potent inhibitors of inflammation and bacterial quorum sensing: synthetic derivatives and structure-activity relationships. ACTA ACUST UNITED AC 2012; 19:589-98. [PMID: 22633410 DOI: 10.1016/j.chembiol.2012.03.014] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 03/23/2012] [Accepted: 03/27/2012] [Indexed: 10/28/2022]
Abstract
Honaucins A-C were isolated from the cyanobacterium Leptolyngbya crossbyana which was found overgrowing corals on the Hawaiian coast. Honaucin A consists of (S)-3-hydroxy-γ-butyrolactone and 4-chlorocrotonic acid, which are connected via an ester linkage. Honaucin A and its two natural analogs exhibit potent inhibition of both bioluminescence, a quorum-sensing-dependent phenotype, in Vibrio harveyi BB120 and lipopolysaccharide-stimulated nitric oxide production in the murine macrophage cell line RAW264.7. The decrease in nitric oxide production was accompanied by a decrease in the transcripts of several proinflammatory cytokines, most dramatically interleukin-1β. Synthesis of honaucin A, as well as a number of analogs, and subsequent evaluation in anti-inflammation and quorum-sensing inhibition bioassays revealed the essential structural features for activity in this chemical class and provided analogs with greater potency in both assays.
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Affiliation(s)
- Hyukjae Choi
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
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Rajaganesh R, Mohan Das T. A facile one-pot synthesis of biphenyl methyl-C-β-d-glycosides. Carbohydr Res 2012; 357:139-42. [DOI: 10.1016/j.carres.2012.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 04/30/2012] [Accepted: 05/03/2012] [Indexed: 11/26/2022]
Affiliation(s)
- Ramanathan Rajaganesh
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
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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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Berrué F, McCulloch MWB, Kerr RG. Marine diterpene glycosides. Bioorg Med Chem 2011; 19:6702-19. [PMID: 21783368 DOI: 10.1016/j.bmc.2011.06.083] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 06/16/2011] [Accepted: 06/28/2011] [Indexed: 10/18/2022]
Abstract
Marine diterpene glycosides (MDGs) respresent a small but highly significant group of the much larger class of marine diterpenes. The three well-studied examples of MDGs are eleutherobins, pseudopterosins and fuscosides, all of which exhibit extremely promising biological activity. The eleutherobins are potent anti-mitotic agents, and the pseudopterosins and fuscosides are potent anti-inflammatory agents. This review discusses the structures and biological activities of these compounds, as well as their biosynthesis and synthesis.
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Affiliation(s)
- Fabrice Berrué
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PEI, Canada
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