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P MA, Chakravarthy A S J, Ila H. Synthesis of 3,5-Disubstituted-1,2,4-thiadiazoles via NaH-DMF-Promoted Dehydrogenative Intramolecular N-S Bond Formation. J Org Chem 2024; 89:4453-4460. [PMID: 38530202 DOI: 10.1021/acs.joc.3c02591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
A facile transition-metal-free synthesis of 3,5-bis(het)aryl/arylaminothiadiazoles has been reported. The overall protocol involves base-mediated tandem thioacylation of amidines with dithioesters or aryl isothiocyanates in DMF solvent and subsequent in situ intramolecular dehydrogenative N-S bond formation of thioacylamidine intermediates under an inert atmosphere. A probable mechanism involving a carbamoyl anion, generated by deprotonation of DMF, acting as a radical initiator has been suggested.
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Affiliation(s)
- Mary Antony P
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Jeevan Chakravarthy A S
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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2
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Casertano M, Esposito E, Bello I, Indolfi C, Putra MY, Di Cesare Mannelli L, Ghelardini C, Menna M, Sorrentino R, Cirino G, d’Emmanuele di Villa Bianca R, Imperatore C, Panza E, Mitidieri E. Searching for Novel Sources of Hydrogen Sulfide Donors: Chemical Profiling of Polycarpa aurata Extract and Evaluation of the Anti-Inflammatory Effects. Mar Drugs 2023; 21:641. [PMID: 38132963 PMCID: PMC10744941 DOI: 10.3390/md21120641] [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: 10/17/2023] [Revised: 12/12/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
Hydrogen sulfide (H2S) is a signaling molecule endogenously produced within mammals' cells that plays an important role in inflammation, exerting anti-inflammatory effects. In this view, the research has shown a growing interest in identifying natural H2S donors. Herein, for the first time, the potential of marine extract as a source of H2S-releasing agents has been explored. Different fractions obtained by the Indonesian ascidian Polycarpa aurata were evaluated for their ability to release H2S in solution. The main components of the most active fraction were then characterized by liquid chromatography-high-resolution mass spectrometry (LC-HRMS) and NMR spectroscopy. The ability of this fraction to release H2S was evaluated in a cell-free assay and J774 macrophages by a fluorimetric method, and its anti-inflammatory activity was evaluated in vitro and in vivo by using carrageenan-induced mouse paw edema. The anti-inflammatory effects were assessed by inhibiting the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX2), and interleukin-6 (IL-6), coupled with a reduction in nitric oxide (NO) and IL-6 levels. Thus, this study defines the first example of a marine source able to inhibit inflammatory responses in vivo through the release of H2S.
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Affiliation(s)
- Marcello Casertano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Erika Esposito
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Ivana Bello
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Chiara Indolfi
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine and Surgery, University of Naples Federico II, 80131 Naples, Italy;
| | - Masteria Yunovilsa Putra
- Research Center for Vaccine and Drugs, Research Organisation for Healths, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong 16911, Indonesia;
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (L.D.C.M.); (C.G.)
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (L.D.C.M.); (C.G.)
| | - Marialuisa Menna
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Raffaella Sorrentino
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Giuseppe Cirino
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Roberta d’Emmanuele di Villa Bianca
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Concetta Imperatore
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Elisabetta Panza
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
| | - Emma Mitidieri
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (E.E.); (I.B.); (M.M.); (R.S.); (G.C.); (E.P.); (E.M.)
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3
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Ahmed AF, Dai CF, Kuo YH, Sheu JH. The Invasive Anemone Condylactis sp. of the Coral Reef as a Source of Sulfur- and Nitrogen-Containing Metabolites and Cytotoxic 5,8-Epidioxy Steroids. Metabolites 2023; 13:metabo13030392. [PMID: 36984832 PMCID: PMC10056678 DOI: 10.3390/metabo13030392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 03/10/2023] Open
Abstract
The Condylactis-genus anemones were examined for their proteinaceous poisons over 50 years ago. On the other hand, the current research focuses on isolating and describing the non-proteinaceous secondary metabolites from the invasive Condylactis anemones, which help take advantage of their population outbreak as a new source of chemical candidates and potential drug leads. From an organic extract of Condylactis sp., a 1,2,4-thiadiazole-based alkaloid, identified as 3,5-bis(3-pyridinyl)-1,2,4-thiadiazole (1), was found to be a new natural alkaloid despite being previously synthesized. The full assignment of NMR data of compound 1, based on the analysis of 2D NMR correlations, is reported herein for the first time. The proposed biosynthetic precursor thionicotinamide (2) was also isolated for the first time from nature along with nicotinamide (3), uridine (5), hypoxanthine (6), and four 5,8-epidioxysteroids (7–10). A major secondary metabolite (−)-betonicine (4) was isolated from Condylactis sp. and found for the first time in marine invertebrates. The four 5,8-epidioxysteroids, among other metabolites, exhibited cytotoxicity (IC50 3.5–9.0 μg/mL) toward five cancer cell lines.
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Affiliation(s)
- Atallah F. Ahmed
- Department of Marine Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Chang-Feng Dai
- Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan
| | - Yao-Haur Kuo
- Division of Herbal Drugs and Natural Products, National Research Institute of Chinese Medicine, Taipei 112, Taiwan
| | - Jyh-Horng Sheu
- Department of Marine Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Frontier Center for Ocean Science and Technology, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Correspondence: ; Tel.: +88-(67)-5252000 (ext. 5030)
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Aggarwal R, Hooda M. Visible-light promoted serendipitous synthesis of 3,5-diaryl-1,2,4-thiadiazoles via oxidative dimerization of thiobenzamides. J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.2005064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
- CSIR-National Institute of Science Communication and Policy Research, New Delhi, India
| | - Mona Hooda
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
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5
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Cao XT, Wei SN, Sun HT, Li M, Zheng ZL, Wang G. Iridium-catalyzed regioselective C-H sulfonamidation of 1,2,4-thiadiazoles with sulfonyl azides in water. RSC Adv 2021; 11:22000-22004. [PMID: 35480792 PMCID: PMC9034132 DOI: 10.1039/d1ra04450h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 12/20/2022] Open
Abstract
We have developed a regioselective C-N cross-coupling of 1,2,4-thiadiazoles with sulfonyl azides through iridium catalysis in water. This method tactically linked the 1,2,4-thiadiazoles and sulfonamides together, and the novel molecules increased the diversity of 1,2,4-thiadiazoles which may have potential applications.
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Affiliation(s)
- Xian-Ting Cao
- College of Medical Engineering, Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 China
| | - Su-Ning Wei
- College of Medical Engineering, Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 China
| | - Hao-Tian Sun
- College of Medical Engineering, Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 China
| | - Meng Li
- College of Medical Engineering, Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 China
| | - Zuo-Ling Zheng
- College of Medical Engineering, Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 China
| | - Guannan Wang
- College of Medical Engineering, Key Laboratory for Medical Functional Nanomaterials, Jining Medical University Jining 272067 China
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6
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Izzati F, Warsito MF, Bayu A, Prasetyoputri A, Atikana A, Sukmarini L, Rahmawati SI, Putra MY. Chemical Diversity and Biological Activity of Secondary Metabolites Isolated from Indonesian Marine Invertebrates. Molecules 2021; 26:1898. [PMID: 33801617 PMCID: PMC8037762 DOI: 10.3390/molecules26071898] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 12/22/2022] Open
Abstract
Marine invertebrates have been reported to be an excellent resource of many novel bioactive compounds. Studies reported that Indonesia has remarkable yet underexplored marine natural products, with a high chemical diversity and a broad spectrum of biological activities. This review discusses recent updates on the exploration of marine natural products from Indonesian marine invertebrates (i.e., sponges, tunicates, and soft corals) throughout 2007-2020. This paper summarizes the structural diversity and biological function of the bioactive compounds isolated from Indonesian marine invertebrates as antimicrobial, antifungal, anticancer, and antiviral, while also presenting the opportunity for further investigation of novel compounds derived from Indonesian marine invertebrates.
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Affiliation(s)
| | | | - Asep Bayu
- Research Center for Biotechnology, Indonesian Institute of Sciences, Jl. Raya Jakarta-Bogor KM 46 Cibinong, Bogor, West Java 16911, Indonesia or (F.I.); (M.F.W.); (A.P.); (A.A.); (L.S.); (S.I.R.)
| | | | | | | | | | - Masteria Yunovilsa Putra
- Research Center for Biotechnology, Indonesian Institute of Sciences, Jl. Raya Jakarta-Bogor KM 46 Cibinong, Bogor, West Java 16911, Indonesia or (F.I.); (M.F.W.); (A.P.); (A.A.); (L.S.); (S.I.R.)
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7
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Anstis DG, Lindsay AC, Söhnel T, Sperry J. Synthesis of the 1,2,4-Thiadiazole Alkaloid Polyaurine B. JOURNAL OF NATURAL PRODUCTS 2020; 83:1721-1724. [PMID: 32297745 DOI: 10.1021/acs.jnatprod.0c00166] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A short synthesis of the natural product polyaurine B is described. The 1,2,4-thiadiazole heterocycle was assembled using a Cu(II)-mediated heterocyclization reaction that forges the N-S bond. The final acylation step to install the methylcarbamate must be conducted under anhydrous, nonbasic conditions to prevent thiadiazole ring opening initiated by attack of hydroxide at C-5.
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Affiliation(s)
- Daniel G Anstis
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Ashley C Lindsay
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
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8
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A Phenotarget Approach for Identifying an Alkaloid Interacting with the Tuberculosis Protein Rv1466. Mar Drugs 2020; 18:md18030149. [PMID: 32150903 PMCID: PMC7143284 DOI: 10.3390/md18030149] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/11/2020] [Accepted: 02/20/2020] [Indexed: 01/10/2023] Open
Abstract
In recent years, there has been a revival of interest in phenotypic-based drug discovery (PDD) due to target-based drug discovery (TDD) falling below expectations. Both PDD and TDD have their unique advantages and should be used as complementary methods in drug discovery. The PhenoTarget approach combines the strengths of the PDD and TDD approaches. Phenotypic screening is conducted initially to detect cellular active components and the hits are then screened against a panel of putative targets. This PhenoTarget protocol can be equally applied to pure compound libraries as well as natural product fractions. Here we described the use of the PhenoTarget approach to identify an anti-tuberculosis lead compound. Fractions from Polycarpa aurata were identified with activity against Mycobacterium tuberculosis H37Rv. Native magnetic resonance mass spectrometry (MRMS) against a panel of 37 proteins from Mycobacterium proteomes showed that a fraction from a 95% ethanol re-extraction specifically formed a protein-ligand complex with Rv1466, a putative uncharacterized Mycobacterium tuberculosis protein. The natural product responsible was isolated and characterized to be polycarpine. The molecular weight of the ligand bound to Rv1466, 233 Da, was half the molecular weight of polycarpine less one proton, indicating that polycarpine formed a covalent bond with Rv1466.
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9
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Wang N, Saidhareddy P, Jiang X. Construction of sulfur-containing moieties in the total synthesis of natural products. Nat Prod Rep 2020; 37:246-275. [DOI: 10.1039/c8np00093j] [Citation(s) in RCA: 221] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review surveys the total syntheses of sulfur-containing natural products where sulfur atoms are introduced with different sulfurization agents to construct related sulfur-containing moieties.
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Affiliation(s)
- Nengzhong Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Puli Saidhareddy
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Xuefeng Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
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Hanif N, Murni A, Tanaka C, Tanaka J. Marine Natural Products from Indonesian Waters. Mar Drugs 2019; 17:md17060364. [PMID: 31248122 PMCID: PMC6627775 DOI: 10.3390/md17060364] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022] Open
Abstract
Natural products are primal and have been a driver in the evolution of organic chemistry and ultimately in science. The chemical structures obtained from marine organisms are diverse, reflecting biodiversity of genes, species and ecosystems. Biodiversity is an extraordinary feature of life and provides benefits to humanity while promoting the importance of environment conservation. This review covers the literature on marine natural products (MNPs) discovered in Indonesian waters published from January 1970 to December 2017, and includes 732 original MNPs, 4 structures isolated for the first time but known to be synthetic entities, 34 structural revisions, 9 artifacts, and 4 proposed MNPs. Indonesian MNPs were found in 270 papers from 94 species, 106 genera, 64 families, 32 orders, 14 classes, 10 phyla, and 5 kingdoms. The emphasis is placed on the structures of organic molecules (original and revised), relevant biological activities, structure elucidation, chemical ecology aspects, biosynthesis, and bioorganic studies. Through the synthesis of past and future data, huge and partly undescribed biodiversity of marine tropical invertebrates and their importance for crucial societal benefits should greatly be appreciated.
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Affiliation(s)
- Novriyandi Hanif
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University (Bogor Agricultural University), Bogor 16680, Indonesia.
| | - Anggia Murni
- Tropical Biopharmaca Research Center, IPB University (Bogor Agricultural University), Bogor 16128, Indonesia.
| | - Chiaki Tanaka
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
| | - Junichi Tanaka
- Department of Chemistry, Biology, and Marine Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan.
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Casertano M, Imperatore C, Luciano P, Aiello A, Putra MY, Gimmelli R, Ruberti G, Menna M. Chemical Investigation of the Indonesian Tunicate Polycarpa aurata and Evaluation of the Effects Against Schistosoma mansoni of the Novel Alkaloids Polyaurines A and B. Mar Drugs 2019; 17:md17050278. [PMID: 31083316 PMCID: PMC6562961 DOI: 10.3390/md17050278] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 12/20/2022] Open
Abstract
A deep study of the metabolic content of the tunicate Polycarpa aurata, collected from Indonesian coast, afforded the isolation of two novel alkaloids, polyaurines A (1) and B (2), along with two new p-substituted benzoyl derivatives (3 and 4) and four known compounds (5–8). The structural elucidation of the new secondary metabolites was assigned by 1D, 2D NMR, and HRESIMS techniques. Computational studies resulted a useful tool to unambiguously determine in polyaurine B the presence of rarely found 1,2,4-thiadiazole ring. The effects of polyaurines A and B on mammalian cells growth and on the viability of different blood-dwelling Schistosoma mansoni (phylum: Platyhelminthes) stages, as well as egg production, were evaluated. Both compounds resulted not cytotoxic; interestingly some of the eggs produced by polyaurine A-treated adult pairs in vitro are smaller, deformed, and/or fragmented; therefore, polyaurine A could represent an interesting bioactive natural molecule to be further investigated.
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Affiliation(s)
- Marcello Casertano
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Concetta Imperatore
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Paolo Luciano
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Anna Aiello
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Masteria Yunovilsa Putra
- Research Center for Oceanography, Indonesian Institute of Sciences, Jl Pasir Putih Raya 1, DKI Jakarta 14430, Indonesia.
| | - Roberto Gimmelli
- Institute of Cell Biology and Neurobiology, National Research Council, Campus A. Buzzati-Traverso, Via E. Ramarini, 32, 00015 Monterotondo (Roma), Italy.
| | - Giovina Ruberti
- Institute of Cell Biology and Neurobiology, National Research Council, Campus A. Buzzati-Traverso, Via E. Ramarini, 32, 00015 Monterotondo (Roma), Italy.
| | - Marialuisa Menna
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
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12
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Serban G. Future Prospects in the Treatment of Parasitic Diseases: 2-Amino-1,3,4-Thiadiazoles in Leishmaniasis. Molecules 2019; 24:E1557. [PMID: 31010226 PMCID: PMC6514673 DOI: 10.3390/molecules24081557] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/14/2019] [Accepted: 04/17/2019] [Indexed: 02/08/2023] Open
Abstract
Neglected tropical diseases affect the lives of a billion people worldwide. Among them, the parasitic infections caused by protozoan parasites of the Trypanosomatidae family have a huge impact on human health. Leishmaniasis, caused by Leishmania spp., is an endemic parasitic disease in over 88 countries and is closely associated with poverty. Although significant advances have been made in the treatment of leishmaniasis over the last decade, currently available chemotherapy is far from satisfactory. The lack of an approved vaccine, effective medication and significant drug resistance worldwide had led to considerable interest in discovering new, inexpensive, efficient and safe antileishmanial agents. 1,3,4-Thiadiazole rings are found in biologically active natural products and medicinally important synthetic compounds. The thiadiazole ring exhibits several specific properties: it is a bioisostere of pyrimidine or benzene rings with prevalence in biologically active compounds; the sulfur atom increases lipophilicity and combined with the mesoionic character of thiadiazoles imparts good oral absorption and good cell permeability, resulting in good bioavailability. This review presents synthetic 2-amino-1,3,4-thiadiazole derivatives with antileishmanial activity. Many reported derivatives can be considered as lead compounds for the synthesis of future agents as an alternative to the treatment of leishmaniasis.
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Affiliation(s)
- Georgeta Serban
- Pharmaceutical Chemistry Department, Faculty of Medicine and Pharmacy, University of Oradea, 29 Nicolae Jiga, 410028 Oradea, Romania.
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13
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Wang Z, Meng X, Li Q, Tang H, Wang H, Pan Y. Electrochemical Synthesis of 3,5‐Disubstituted‐1,2,4‐thiadiazoles through NH
4
I‐Mediated Dimerization of Thioamides. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800871] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Zi‐Qiang Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
| | - Xiu‐Jin Meng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
| | - Qian‐Yu Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
| | - Hai‐Tao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
| | - Heng‐Shan Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
| | - Ying‐Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 People's Republic of China
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14
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Chai L, Lai Z, Xia Q, Yuan J, Bian Q, Yu M, Zhang W, Xu Y, Xu H. One-Pot Synthesis of 3-Aryl-5-amino-1,2,4-thiadiazoles from Imidates and Thioureas by I2
-Mediated Oxidative Construction of the N-S Bond. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800670] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ling Chai
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Zhenzhen Lai
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Qiangqiang Xia
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Jiangpei Yuan
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Qilong Bian
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Mingjian Yu
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Wenkai Zhang
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Yuanqing Xu
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
| | - Hao Xu
- Institute of Functional Organic Molecular Engineering; College of Chemistry and Chemical Engineering; Henan University; 475004 Kaifeng P. R. China
- Key Laboratory of Natural Medicine and Immuno-Engineering; Henan University; 475004 Kaifeng P. R. China
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15
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Davison EK, Hume PA, Sperry J. Total Synthesis of an Isatis indigotica-Derived Alkaloid Using a Biomimetic Thio-Diels–Alder Reaction. Org Lett 2018; 20:3545-3548. [DOI: 10.1021/acs.orglett.8b01321] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Emma K. Davison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Paul A. Hume
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
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16
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Putta VRK, Gujjarappa R, Vodnala N, Gupta R, Pujar PP, Malakar CC. The facile and efficient organocatalytic platform for accessing 1,2,4-selenadiazoles and thiadiazoles under aerobic conditions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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17
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Petkowski JJ, Bains W, Seager S. Natural Products Containing a Nitrogen-Sulfur Bond. JOURNAL OF NATURAL PRODUCTS 2018; 81:423-446. [PMID: 29364663 DOI: 10.1021/acs.jnatprod.7b00921] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Only about 100 natural products are known to contain a nitrogen-sulfur (N-S) bond. This review thoroughly categorizes N-S bond-containing compounds by structural class. Information on biological source, biological activity, and biosynthesis is included, if known. We also review the role of N-S bond functional groups as post-translational modifications of amino acids in proteins and peptides, emphasizing their role in the metabolism of the cell.
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Affiliation(s)
- Janusz J Petkowski
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - William Bains
- Rufus Scientific , 37 The Moor, Melbourn, Royston, Herts SG8 6ED, U.K
| | - Sara Seager
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Physics, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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18
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tert-Butyl nitrite induced radical dimerization of primary thioamides and selenoamides at room temperature. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Davison EK, Sperry J. Natural Products with Heteroatom-Rich Ring Systems. JOURNAL OF NATURAL PRODUCTS 2017; 80:3060-3079. [PMID: 29135244 DOI: 10.1021/acs.jnatprod.7b00575] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This review focuses on all known natural products that contain a "heteroatom-rich" ring system, specifically a five-, six- or seven-membered ring that contains three or more heteroatoms. The isolation and biological activity of these natural products is discussed, along with the biosynthetic processes that Nature employs to assemble these rare heterocyclic frameworks.
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Affiliation(s)
- Emma K Davison
- School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
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20
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Zhou Z, Liu M, Sun S, Yao E, Liu S, Wu Z, Yu JT, Jiang Y, Cheng J. Multicomponent reactions (MCRs) of arylmethyl bromides, arylamidines and elemental sulfur toward unsymmetric 3,5-diaryl 1,2,4-thiadiazoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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21
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Wang Z, Xie H, Xiao F, Guo Y, Huang H, Deng GJ. Palladium-Catalyzed 3-Aryl-5-acyl-1,2,4-thiadiazole Formation from Ketones, Amidines, and Sulfur Powder. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700148] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zilong Wang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; 411105 Xiangtan China
| | - Hao Xie
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; 411105 Xiangtan China
| | - Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; 411105 Xiangtan China
| | - Yanjun Guo
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; 411105 Xiangtan China
| | - Huawen Huang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; 411105 Xiangtan China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; 411105 Xiangtan China
- Beijing National Laboratory for Molecular Sciences and CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry; Chinese Academy of Sciences (CAS); 100190 Beijing P. R. China
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22
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Palanisamy SK, Rajendran NM, Marino A. Natural Products Diversity of Marine Ascidians (Tunicates; Ascidiacea) and Successful Drugs in Clinical Development. NATURAL PRODUCTS AND BIOPROSPECTING 2017; 7:1-111. [PMID: 28097641 PMCID: PMC5315671 DOI: 10.1007/s13659-016-0115-5] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 12/14/2016] [Indexed: 06/06/2023]
Abstract
This present study reviewed the chemical diversity of marine ascidians and their pharmacological applications, challenges and recent developments in marine drug discovery reported during 1994-2014, highlighting the structural activity of compounds produced by these specimens. Till date only 5% of living ascidian species were studied from <3000 species, this study represented from family didemnidae (32%), polyclinidae (22%), styelidae and polycitoridae (11-12%) exhibiting the highest number of promising MNPs. Close to 580 compound structures are here discussed in terms of their occurrence, structural type and reported biological activity. Anti-cancer drugs are the main area of interest in the screening of MNPs from ascidians (64%), followed by anti-malarial (6%) and remaining others. FDA approved ascidian compounds mechanism of action along with other compounds status of clinical trials (phase 1 to phase 3) are discussed here in. This review highlights recent developments in the area of natural products chemistry and biotechnological approaches are emphasized.
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Affiliation(s)
- Satheesh Kumar Palanisamy
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166, Messina, Italy.
| | - N M Rajendran
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Angela Marino
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166, Messina, Italy
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23
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Abstract
INTRODUCTION Four isomeric structures of thiadiazole motifs have outstanding pharmacological inhibitory applications are reported in this review. Thiadiazole nucleus is present in several biologically active natural products and commercial drugs. Most of thiadiazoles reported herein are emphasized to have broad spectrum of medicinal activities. Areas covered: This review represents the recent inhibitory activities of thiadiazole isomeric scaffolds and their broad-spectrum biological applications published as full texts during 2010-2016 as well as the patents published during 2005-2016. The inhibition areas covered included anti-inflammatory, antimicrobial, antitumor, antioxidant, antitubercular, antiviral, antileishmanial, anticonvulsant, herbicidal and algicidal activities in addition to enzymes, human platelet aggregation and neuroprotective inhibitors. Expert opinion: This survey revealed very interesting data about the applications of thiadiazoles, where some synthetic or natural thiadiazole derivatives were components of drugs available in the market. Many thiadiazole derivatives can be considered as lead compounds for drug synthesis. The most inhibitory active 1,3,4-thiadiazole compounds are those incorporating secondary alkyl(aryl)amido- and/or benzylthio(mercapto) groups at positions 2 and 5. Several thiadiazole derivatives demonstrated higher antibacterial, antitumor and antiviral activities than the standard drugs. Some thiadiazole derivatives exhibited high selective enzymes inhibitory activities based on the electronic properties of the substituents at positions 2 or 5.
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Affiliation(s)
- Kamal M Dawood
- a Department of Chemistry, Faculty of Science , Kuwait University , Safat , Kuwait.,b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt
| | - Thoraya A Farghaly
- b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt.,c Department of Chemistry, Faculty of Applied Science , Umm Al-Qura University , Makkah Almukkarramah , Saudi Arabia
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24
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Daletos G, Ancheeva E, Orfali RS, Wray V, Proksch P. Structure Elucidation of Antibiotics by Nmr Spectroscopy. Methods Mol Biol 2017; 1520:63-83. [PMID: 27873246 DOI: 10.1007/978-1-4939-6634-9_4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is a powerful tool for the structure elucidation of antibiotics in solution. Over the past 30 years there have been numerous publications describing the use of NMR to characterize naturally derived or synthetic antibiotics. A large number of one-dimensional (1D) and two-dimensional (2D) NMR methods are available today and the list continues to expand. In this chapter, we will consider the key NMR experiments that provide useful information for compound structure elucidation.
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Affiliation(s)
- Georgios Daletos
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225, Duesseldorf, Germany.
| | - Elena Ancheeva
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225, Duesseldorf, Germany
| | - Raha S Orfali
- Pharmacognosy Department, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Victor Wray
- Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225, Duesseldorf, Germany.
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25
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Cautain B, Castillo F, Musso L, Ferreira BI, de Pedro N, Rodriguez Quesada L, Machado S, Vicente F, Dallavalle S, Link W. Discovery of a Novel, Isothiazolonaphthoquinone-Based Small Molecule Activator of FOXO Nuclear-Cytoplasmic Shuttling. PLoS One 2016; 11:e0167491. [PMID: 27936162 PMCID: PMC5147912 DOI: 10.1371/journal.pone.0167491] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/26/2016] [Indexed: 01/01/2023] Open
Abstract
FOXO factors are tumour suppressor proteins commonly inactivated in human tumours by posttranslational modifications. Furthermore, genetic variation within the FOXO3a gene is consistently associated with human longevity. Therefore, the pharmacological activation of FOXO proteins is considered as an attractive therapeutic approach to treat cancer and age-related diseases. In order to identify agents capable of activating FOXOs, we tested a collection of small chemical compounds using image-based high content screening technology. Here, we report the discovery of LOM612 (compound 1a), a newly synthesized isothiazolonaphthoquinone as a potent FOXO relocator. Compound 1a induces nuclear translocation of a FOXO3a reporter protein as well as endogenous FOXO3a and FOXO1 in U2OS cells in a dose-dependent manner. This activity does not affect the subcellular localization of other cellular proteins including NFkB or inhibit CRM1-mediated nuclear export. Furthermore, compound 1a shows a potent antiproliferative effect in human cancer cell lines.
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Affiliation(s)
- Bastien Cautain
- Fundacion MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Francisco Castillo
- Fundacion MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Loana Musso
- DeFENS Department of Food, Environmental and Nutritional Sciences, Università di Milano, Italy
| | - Bibiana I. Ferreira
- Centre for Biomedical Research (CBMR), Gambelas Campus, Faro, Portugal
- Regenerative Medicine Program, Department of Biomedical Sciences and Medicine, University of Algarve, Campus de Gambelas, Faro, Portugal
| | - Nuria de Pedro
- Fundacion MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | | | - Susana Machado
- Centre for Biomedical Research (CBMR), Gambelas Campus, Faro, Portugal
| | - Francisca Vicente
- Fundacion MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Sabrina Dallavalle
- DeFENS Department of Food, Environmental and Nutritional Sciences, Università di Milano, Italy
| | - Wolfgang Link
- Centre for Biomedical Research (CBMR), Gambelas Campus, Faro, Portugal
- Regenerative Medicine Program, Department of Biomedical Sciences and Medicine, University of Algarve, Campus de Gambelas, Faro, Portugal
- * E-mail:
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26
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High yielding protocol for oxidative dimerization of primary thioamides: a strategy toward 3,5-disubstituted 1,2,4-thiadiazoles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Yang Z, Huang N, Xu B, Huang W, Xie T, Cheng F, Zou K. Cytotoxic 1,3-Thiazole and 1,2,4-Thiadiazole Alkaloids from Penicillium oxalicum: Structural Elucidation and Total Synthesis. Molecules 2016; 21:232. [PMID: 26927049 PMCID: PMC6273271 DOI: 10.3390/molecules21030232] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 02/14/2016] [Accepted: 02/15/2016] [Indexed: 01/26/2023] Open
Abstract
Two new thiazole and thiadiazole alkaloids, penicilliumthiamine A and B (2 and 3), were isolated from the culture broth of Penicillium oxalicum, a fungus found in Acrida cinerea. Their structures were elucidated mainly by spectroscopic analysis, total synthesis and X-ray crystallographic analysis. Biological evaluations indicated that compound 1, 3a and 3 exhibit potent cytotoxicity against different cancer cell lines through inhibiting the phosphorylation of AKT/PKB (Ser 473), one of important cancer drugs target.
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Affiliation(s)
- Zheng Yang
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Bang Xu
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
- China Three Gorges University People's Hospital & Yichang First People's Hospital, Yichang 443000, China.
| | - Wenfeng Huang
- Hubei Key Laboratory of Natural Products Research and Development, Medical College, China Three Gorges University, Yichang 443002, China.
| | - Tianpeng Xie
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Fan Cheng
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
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28
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Davison EK, Sperry J. Synthesis of the 1,2,4-thiadiazole alkaloids polycarpathiamines A and B. Org Chem Front 2016. [DOI: 10.1039/c5qo00367a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of the 1,2,4-thiadiazole alkaloids polycarpathiamines A and B is described. The heteroaromatic core of the natural products was assembled using a one-pot benzylic oxidation–oxidative heterocyclization process.
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Affiliation(s)
- Emma K. Davison
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
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29
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AlTarabeen M, Daletos G, Ebrahim W, Müller WEG, Hartmann R, Lin W, Proksch P. Ircinal E, a New Manzamine Derivative from the Indonesian Marine Sponge Acanthostrongylophora ingens. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Chemical investigation of the MeOH extract of the sponge Acanthostrongylophora ingens afforded the new manzamine derivative ircinal E (1), in addition to six known metabolites (2–7). The structure of the new compound was unequivocally elucidated using one- and two-dimensional NMR spectroscopy, as well as high-resolution mass spectrometry. Compounds 1–6 exhibited strong to moderate cytotoxicity against the murine lymphoma L5178Y cell line with IC50 values ranging from 2.8 to 21.7 μM.
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Affiliation(s)
- Mousa AlTarabeen
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225 Duesseldorf, Germany
| | - Georgios Daletos
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225 Duesseldorf, Germany
| | - Weaam Ebrahim
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225 Duesseldorf, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Werner E. G. Müller
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg-University Mainz. Duesbergweg 6, 55128 Mainz, Germany
| | - Rudolf Hartmann
- Institute of Complex Systems: Strukturbiochemie, Forschungszentrum Juelich, Wilhelm-Johnen-Straße, 52428 Juelich, Germany
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Health Science Center, 100191 Beijing, People's Republic of China
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse 1, 40225 Duesseldorf, Germany
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Abstract
This review covers the literature published in 2013 for marine natural products (MNPs), with 982 citations (644 for the period January to December 2013) 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 (1163 for 2013), together with the relevant biological activities, source organisms and country of origin. Reviews, 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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32
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Daletos G, de Voogd NJ, Müller WEG, Wray V, Lin W, Feger D, Kubbutat M, Aly AH, Proksch P. Cytotoxic and protein kinase inhibiting nakijiquinones and nakijiquinols from the sponge Dactylospongia metachromia. JOURNAL OF NATURAL PRODUCTS 2014; 77:218-226. [PMID: 24479418 DOI: 10.1021/np400633m] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Chemical investigation of the sponge Dactylospongia metachromia afforded five new sesquiterpene aminoquinones (1-5), two new sesquiterpene benzoxazoles (6 and 7), the known analogue 18-hydroxy-5-epi-hyrtiophenol (8), and a known glycerolipid. The structures of all compounds were unambiguously elucidated by one- and two-dimensional NMR and by MS analyses, as well as by comparison with the literature. Compounds 1-5 showed potent cytotoxicity against the mouse lymphoma cell line L5178Y with IC50 values ranging from 1.1 to 3.7 μM. When tested in vitro for their inhibitory potential against 16 different protein kinases, compounds 5, 6, and 8 exhibited the strongest inhibitory activity against ALK, FAK, IGF1-R, SRC, VEGF-R2, Aurora-B, MET wt, and NEK6 kinases (IC50 0.97-8.62 μM).
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Affiliation(s)
- Georgios Daletos
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität , Universitätsstraße 1, 40225 Düsseldorf, Germany
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33
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Frank P, Hedman B, Hodgson KO. XAS spectroscopy, sulfur, and the brew within blood cells from Ascidia ceratodes. J Inorg Biochem 2014; 131:99-108. [PMID: 24333825 PMCID: PMC3913562 DOI: 10.1016/j.jinorgbio.2013.11.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 11/06/2013] [Accepted: 11/08/2013] [Indexed: 02/02/2023]
Abstract
We report the first use of K-edge X-ray absorption spectroscopy (XAS) as a direct spectroscopic probe of pH and cytosolic emf within living cells. A new accuracy metric of model-based fits to K-edge spectra is further developed. Sulfur functional groups in three collections of living blood cells and one sample of cleared blood plasma from the tunicate Ascidia ceratodes were speciated using K-edge XAS. Cysteine and cystine, the preferred thiol-disulfide model, averaged about 12% of total sulfur. Sulfate monoesters and cyclic diesters unexpectedly constituted 36% of blood cell sulfur. Soluble sulfate averaged about 25% across the three blood cell samples, while the ratio of SO4(2-) to HSO4(-) implied average signet ring vacuolar pH values of 0.85, 1.4, or 3.1. Intracellular (VSO4)(+) was unobserved, while [V(RSO3)n]((3-n)+) was detected in the two lowest pH blood cell samples. About 5% of sulfur was distributed as mono- or dibenzothiophene or ethylene-epi-sulfide, or as a thiadiazole reminiscent of the polycarpathiamines. Blood plasma was dominated by sulfate (83%), but with 15% of an alkylsulfate ester and about 2% of low-valent sulfur. Gravimetric analysis of soluble sulfate yielded average concentrations of blood cell sulfur. Average [cysteine] and [cystine] (ranging ~10-30 mM and ~20-90 mM, respectively) implied blood-cell cytosolic emf values of approximately -0.20 V. High cellular [cysteine] is consistent with the proposed model for enzymatic reduction of vanadate by endogenous thiol, wherein the trajectory of metal site-symmetry is controlled and directed through to a thermodynamically favored 7-coordinate V(III) product.
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Affiliation(s)
- Patrick Frank
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA; Stanford Synchrotron Radiation Lightsource, SLAC, Stanford University, Stanford, CA 94309, USA.
| | - Britt Hedman
- Stanford Synchrotron Radiation Lightsource, SLAC, Stanford University, Stanford, CA 94309, USA
| | - Keith O Hodgson
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA; SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, USA
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Pham CD, Hartmann R, Böhler P, Stork B, Wesselborg S, Lin W, Lai D, Proksch P. Callyspongiolide, a cytotoxic macrolide from the marine sponge Callyspongia sp. Org Lett 2013; 16:266-9. [PMID: 24329175 DOI: 10.1021/ol403241v] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel macrolide, callyspongiolide, whose structure was determined by comprehensive analysis of the NMR and HRMS spectra, was isolated from the marine sponge Callyspongia sp. collected in Indonesia. The compound features a carbamate-substituted 14-membered macrocyclic lactone ring with a conjugated structurally unprecedented diene-ynic side chain terminating at a brominated benzene ring. Callyspongiolide showed strong cytotoxicity against human Jurkat J16 T and Ramos B lymphocytes.
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Affiliation(s)
- Cong-Dat Pham
- Institute of Pharmaceutical Biology and Biotechnology and §Institute of Molecular Medicine, Heinrich-Heine University , 40225 Düsseldorf, Germany
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