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Pereira ÉJMC, Amorim ÉADF, Aragão FMM, Câmara WDS, Araújo MC, Pereira CDDS, Dias LRL, Gomes WC, Aliança ASDS, Souza JCDS, da Silva LCN, de Miranda RDCM. Biocontrol Potential of Serratia Marcescens (B8) and Bacillus sp. (B13) Isolated from Urban Mangroves in Raposa, Brazil. Life (Basel) 2023; 13:2036. [PMID: 37895418 PMCID: PMC10607943 DOI: 10.3390/life13102036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/28/2023] [Accepted: 09/04/2023] [Indexed: 10/29/2023] Open
Abstract
This study analyzed the antifungal potential of 16 bacterial strains isolated from mangrove sediment. Bacterial selection was conducted in a solid medium. This was followed by the production and extraction of metabolites using ethyl acetate to evaluate chitinase production, antifungal activity, and toxicity toward Allium cepa and Tenebrio molitor. Bacterial strains B8, B11, and B13 produced the largest inhibition halos (>30 mm) toward Fusarium solani, Fusarium oxysporum, and Rhizoctonia solani fungi. Strains B1, B3, B6, B8, B11, B13, B14, and B16 produced chitinases. In assays using liquid media, B8 and B13 produced the largest inhibition halos. Exposing the fungal inocula to metabolic extracts of strains B6, B8, B11, B13, B14, B15, and B16 caused micromorphological alterations in the inocula, culminating in the inhibition of R. solani sporulation and spore germination. Toxicity tests using Allium cepa and Tenebrio molitor revealed that the metabolites showed low toxicity. Six of the bacterial strains were molecularly identified to species levels, and a further two to genus level. These included Serratia marcescens (B8), which exhibited activity in all tests. Mangroves provide a useful resource for the isolation of microorganisms for biocontrol. Among the isolates, Serratia marcescens and Bacillus spp. showed the greatest potential to produce metabolites for use as biocontrol agents in agriculture.
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Affiliation(s)
- Érima Jôyssielly Mendonça Castro Pereira
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
| | - Érika Alves da Fonsêca Amorim
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
- Programa de Pós-Graduação em Odontologia, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Felicia Maria Melo Aragão
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
| | - Wallison de Souza Câmara
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
| | - Maria Carvalho Araújo
- Programa de Pós-Graduação em Gestão de Programas e Serviços de Saúde, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Carlos Drielson da Silva Pereira
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
| | - Leo Ruben Lopes Dias
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
| | - Wolia Costa Gomes
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
| | - Amanda Silva dos Santos Aliança
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Gestão de Programas e Serviços de Saúde, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Joicy Cortez de Sá Souza
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Luís Cláudio Nascimento da Silva
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
- Programa de Pós-Graduação em Odontologia, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Rita de Cássia Mendonça de Miranda
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
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Cui P, Liu L, Huang Z, Shi S, Kong K, Zhang Y. Diversity, antibacterial activity and chemical analyses of gut-associated fungi isolated from the Crocothemis servilia. Front Microbiol 2022; 13:970990. [PMID: 36187943 PMCID: PMC9523248 DOI: 10.3389/fmicb.2022.970990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Insect-associated fungi are a potentially rich source of novel natural products with antibacterial activity. Here, we investigated the community composition and phylogenetic diversity of gut-associated fungi of the dragonfly (Crocothemis Servilia) using a combination of culture-dependent and culture-independent methods. A total of 42 fungal isolates were obtained from the guts of the dragonfly, which belonged to four classes and thirteen different genera. Amplicon sequencing analyses revealed that the fungal communities were more diverse, and a total of 136 genera were identified and dominated by the genera Wojnowiciella and Phoma. The antibacterial bioassay showed that five fungal crude extracts of representative isolates have shown antibacterial activities. Among them, the extract of Phoma sp. QTH17 showed the best antibacterial activities against Escherichia coli, Micrococcus tetragenus, and Staphylococcus aureus with the disc diameter of inhibition zone diameter (IZD) of 6.50, 10.80, and 8.70 mm, respectively. Chemical analysis of Phoma sp. QTH17 led to the discovery of five known compounds, including ergosterol (1), 3-Chlorogentisyl alcohol (2), epoxydon (3), epoxydon 6-methylsalicylate ester (4) and mannitol (5). Among them, the compound 3 exhibited potent antibacterial activities against E. coli, M. tetragenus, and S. aureus with the IZD of 7.00, 14.00, and 12.50 mm, respectively, which were slightly weaker than those of the positive gentamicin sulfate with the IZD of 11.13, 18.30, and 12.13 mm, respectively. In conclusion, our results confirmed that the diversity of gut-associated fungi of C. Servilia could be expected to explore the resource of new species and antibacterial substances.
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Affiliation(s)
- Pu Cui
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Lijun Liu
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Zhongdi Huang
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Shuping Shi
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Kun Kong
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Yinglao Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
- *Correspondence: Yinglao Zhang,
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Xu T, Song Z, Hou Y, Liu S, Li X, Yang Q, Wu S. Secondary metabolites of the genus Nigrospora from terrestrial and marine habitats: Chemical diversity and biological activity. Fitoterapia 2022; 161:105254. [PMID: 35872163 DOI: 10.1016/j.fitote.2022.105254] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 11/16/2022]
Abstract
Secondary metabolites produced by the ascomycetes have attracted wide attention from researchers. Their diverse chemical structures and rich biological activities are essential in medicine, food, and agriculture. The monophyletic Nigrospora genus belongs to the Apiosporaceae family and is a rich source of novel and diverse bioactive metabolites. It occurs as a common plant pathogen, endophyte, and saprobe distributed in many ecosystems worldwide. Researchers have focused on discovering new species and secondary metabolites in the past ten years. The host diseases caused by Nigrospora species are also investigated. This review describes 50 references from Web of Science, CNKI, Google Scholar and PubMed related to the secondary metabolites from Nigrospora. Here, a total of 231 compounds isolated from five known species and 21 unidentified species of Nigrospora from January 1991 to June 2022 are summarized. Their structures are attributed to polyketides, terpenoids, steroids, N-containing compounds, and fatty acids. Meanwhile, 77 metabolites exhibited various biological activities like cytotoxic, antifungal, antibacterial, antiviral, antioxidant, anti-inflammatory, antileukemic, antimalarial, phytotoxic, enzyme inhibitory, etc. Notably, this review presents a comprehensive literature survey focusing on the chemistry and bioactivity of secondary metabolites from Nigrospora.
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Affiliation(s)
- Tangchang Xu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Zhiqiang Song
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Yage Hou
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Sisi Liu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Xinpeng Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Qingrong Yang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Shaohua Wu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China.
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Ha MT, Lee TH, Kim CS, Prajapati R, Kim JA, Choi JS, Min BS. PTP1B and α-glucosidase inhibitory activities of the chemical constituents from Hedera rhombea fruits: Kinetic analysis and molecular docking simulation. PHYTOCHEMISTRY 2022; 197:113100. [PMID: 35144153 DOI: 10.1016/j.phytochem.2022.113100] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
In this study, we present the first investigation of Hedera rhombea Bean fruit, which led to the isolation of six undescribed compounds including two megastigmane glucosides, two rare 1,4-dioxane neolignanes, and two quinic acid derivatives, together with 26 known compounds. Their structures and absolute configurations were elucidated by extensive analysis of NMR spectroscopic data, HRMS, and ECD calculations. This is the first report on the isolation of methyl 3-O-caffeoyl-5-O-p-coumaroylquinate from a natural source. Among the isolated compounds, falcarindiol and caffeoyltryptophan showed significant PTP1B inhibition with IC50 values of 7.32 and 16.99 μM, respectively, compared to those of the positive controls [sodium orthovanadate (IC50 = 17.96 μM) and ursolic acid (IC50 = 4.53 μM)]. These two compounds along with several other compounds displayed significant α-glucosidase inhibitions with IC50 values ranging from 12.88 to 91.89 μM, stronger than that of the positive control (acarbose, IC50 = 298.07 μM). Enzyme kinetic analysis indicated that caffeoyltryptophan and falcarindiol displayed competitive and mixed-type PTP1B inhibition, respectively, whereas the α-glucosidase inhibition type was mixed-type for caffeoyltryptophan and uncompetitive (rarely reported for a-glucosidase inhibitors) for falcarindiol. In addition, molecular docking results showed that these active compounds exhibited good binding affinities toward both PTP1B and α-glucosidase with negative binding energies. The results of the present study demonstrate that these active compounds might be beneficial in the treatment of type 2 diabetes.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Tae Hyun Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Ritu Prajapati
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea.
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Fungal Naphthalenones; Promising Metabolites for Drug Discovery: Structures, Biosynthesis, Sources, and Pharmacological Potential. Toxins (Basel) 2022; 14:toxins14020154. [PMID: 35202181 PMCID: PMC8879409 DOI: 10.3390/toxins14020154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 12/10/2022] Open
Abstract
Fungi are well-known for their abundant supply of metabolites with unrivaled structure and promising bioactivities. Naphthalenones are among these fungal metabolites, that are biosynthesized through the 1,8-dihydroxy-naphthalene polyketide pathway. They revealed a wide spectrum of bioactivities, including phytotoxic, neuro-protective, cytotoxic, antiviral, nematocidal, antimycobacterial, antimalarial, antimicrobial, and anti-inflammatory. The current review emphasizes the reported naphthalenone derivatives produced by various fungal species, including their sources, structures, biosynthesis, and bioactivities in the period from 1972 to 2021. Overall, more than 167 references with 159 metabolites are listed.
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Shurupova OV, Rzhevskiy SA, Minaeva LI, Topchiy MA, Asachenko AF. Highly efficient synthesis of 3,4-diarylbutadiene sulfones using Heck–Matsuda reaction. RSC Adv 2022; 12:5517-5521. [PMID: 35425582 PMCID: PMC8981374 DOI: 10.1039/d2ra00078d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/06/2022] [Indexed: 02/02/2023] Open
Abstract
For the first time we describe a general method for the synthesis of previously not synthesized unsymmetrical 3,4-diarylbutadiene sulfones which can be stable convenient precursors for 2,3-diaryl-1,3-butadienes. Our method for arylation of butadiene sulfones via Heck–Matsuda reaction allows to obtain unsymmetrical 3,4-diarylbutadiene sulfones with a variety of alkyl, alkoxy, nitro, ethoxycarbonyl, perfluoroalkyl and halogen substituents (30 examples) in very good yields using readily available reagents and catalysts. An efficient and facile Pd-catalyzed synthesis of 3,4-diarylbutadiene sulfones with high regioselectivity from aryldiazonium salts and butadiene sulfone was developed.![]()
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Affiliation(s)
- Olga V. Shurupova
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia
| | - Sergey A. Rzhevskiy
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia
| | - Lidiya I. Minaeva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia
| | - Maxim A. Topchiy
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia
| | - Andrey F. Asachenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia
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Wong Chin JM, Puchooa D, Bahorun T, Jeewon R. Antimicrobial properties of marine fungi from sponges and brown algae of Mauritius. Mycology 2021; 12:231-244. [PMID: 34900379 PMCID: PMC8654394 DOI: 10.1080/21501203.2021.1895347] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/19/2021] [Indexed: 11/03/2022] Open
Abstract
Purpose of the study: Marine fungi of Mauritius have been poorly studied. There are numerous reports on the bioactive secondary metabolites that are produced by fungi around the world. Yet, research on the molecular characterisation and the pharmaceutical potential of marine fungi in Mauritius is rather scanty. Method: The samples, which consisted of three sponges Haliclona sp., Iotrochota sp. and Biemna sp. and two brown algae Turbinaria conoides and Sargassum portierianum, were collected in the North of Mauritius during winter. No sporulating structures were observed from the fungal cultures making morphological analysis impossible. The molecular characterisation of the selected isolates was carried out by the amplification of the ITS regions and phylogenetic analysis. The antimicrobial properties were then determined using the disc diffusion and the minimum inhibitory concentration (MIC) assay. Results: Genus level identification was made from molecular data and for some isolates, species-level identification was even possible. Twelve fungi that showed the best antimicrobial properties were identified as Peniophora sp., Aspergillus cristatus, Acremonium sp., Cordyceps memorabilis, Aspergillus ochraceus, Biscogniauxia sp., Aspergillus keratitidis, Exserohilum rostratum, Chromocleista sp., Nigrospora oryzae, Aspergillus flavipes and Mycosphaerella. The lowest MIC result of 0.0098 mg/mL was obtained with Chromocleista sp. mycelium extract against Staphylococcus aureus. The MIC of the mycelium extracts was lower than the broth extracts for most isolates indicating that the antimicrobial compounds are not secreted. Conclusion: Marine fungi from the Mauritian waters have immense potential in the search for natural products against antibiotic-resistant bacteria.
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Affiliation(s)
| | - Daneshwar Puchooa
- Department of Agricultural and Food Science, University of Mauritius, Réduit, Republic of Mauritius
| | - Theeshan Bahorun
- Department of Biosciences and Ocean Studies, ANDI Centre for Biomedical and Biomaterials Research (CBBR) and University of Mauritius, Réduit, Republic of Mauritius
| | - Rajesh Jeewon
- Department of Health Sciences, University of Mauritius, Réduit, Republic of Mauritius
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Techaoei S, Jarmkom K, Dumrongphuttidecha T, Khobjai W. Evaluation of the stability and antibacterial activity of crude extracts of hydro-endophytic fungi. J Adv Pharm Technol Res 2021; 12:61-66. [PMID: 33532357 PMCID: PMC7832182 DOI: 10.4103/japtr.japtr_114_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/03/2020] [Accepted: 09/19/2020] [Indexed: 11/04/2022] Open
Abstract
The production and screening of secondary metabolites of four hydro-endophytes isolated from lotus, and the stability of bioactive compounds was evaluated. Surface-sterilized technique was used to isolate the endophytic fungi (EF) on potato dextrose agar and identified by using morphological and molecular techniques. The extracts were tested for anti-microbial activity against methicillin-resistant Staphylococcus aureus (MRSA) DMST20651, Streptococcus mutans (SM) DMST18777, Staphylococcus epidermidis (SE) ATCC12228, Pseudomonas aeruginosa (PA) TISTR1467, and Propionibacterium acnes (PN) DMST14916. The bacteriostatic and bactericidal activities were determined. Finally, thermal and ultraviolet (UV) stability was evaluated. Four endophyte isolates (EF 14, EF36, EF53, EF58, and EF60) produced secondary metabolites and showed activity against MRSA, SM, SE, PA, and PN, respectively. The crude ethyl acetate (EtOAc) and methanol (MeOH) extract of EF14 showed activity against MRSA with the inhibition zone of 9.00 ± 0.00 and 7.50 ± 0.50 mm, and minimum inhibitory concentration was 4.80 and 4.90 mg/mL, respectively. The minimum bactericidal concentration was 9.60 mg/mL. Whereas, the crude EtOAc and MeOH extract EF60, which were extracted by EtOAc and MeOH, showed inhibition zone of SE as 12.33 ± 0.57 and 12.33 ± 0.57 mm, respectively. Crude EtOAC extracts of EF14 showed highest thermal stability at 55°C-121°C, and UV stability with MRSA and SE, respectively. The results showed that the EtOAc extracts of EF could be potential antibacterial pathogens and displayed UV-thermal stability. This information is beneficial for future investigations, since some bioactive compounds have potential as anti-resistant strains of some bacterial pathogens.
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Affiliation(s)
- Surachai Techaoei
- Department of Thai Traditional Medicine, Thai Traditional Medicine College, Rajamangala University of Technology, Pathumthani, Thailand
| | - Khemjira Jarmkom
- Department of Thai Traditional Medicine, Thai Traditional Medicine College, Rajamangala University of Technology, Pathumthani, Thailand
| | - Thisakorn Dumrongphuttidecha
- Department of Thai Traditional Medicine, Thai Traditional Medicine College, Rajamangala University of Technology, Pathumthani, Thailand
| | - Warachate Khobjai
- Department of Clinical Chemistry, Faculty of Medical Technology, Nation University, Lampang, Thailand
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Ramesha KP, Mohana NC, Nuthan BR, Rakshith D, Satish S. Antimicrobial metabolite profiling of Nigrospora sphaerica from Adiantum philippense L. J Genet Eng Biotechnol 2020; 18:66. [PMID: 33094373 PMCID: PMC7581665 DOI: 10.1186/s43141-020-00080-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/24/2020] [Indexed: 11/10/2022]
Abstract
Background Endophyte bestows beneficial aspects to its inhabiting host, along with a contribution to diverse structural attributes with biological potential. In this regard, antimicrobial profiling of fungal endophytes from medicinal plant Adiantum philippense revealed bioactive Nigrospora sphaerica from the leaf segment. Chemical and biological profiling through TLC–bioautography and hyphenated spectroscopic techniques confirmed the presence of phomalactone as an antimicrobial metabolite. Results The chemical investigation of the broth extract by bioassay-guided fractionation confirmed phomalactone as a bioactive antimicrobial secondary metabolite. The antimicrobial activity of phomalactone was found to be highest against Escherichia coli by disc diffusion assay. The MIC was found to be significant against both Escherichia coli and Xanthomonas campestris in the case of bacteria and dermatophyte Candida albicans at 150 μg/ml, respectively. Conclusions Overall, the results highlighted the antimicrobial potential of phomalactone from the endophyte Nigrospora sphaerica exhibiting a broad spectrum of antimicrobial activity against human and phytopathogenic bacteria and fungi. This work is the first report regarding the antibacterial activity of phomalactone.
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Affiliation(s)
- Kolathuru Puttamadaiah Ramesha
- Microbial Drug Technological Laboratory, Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, Karnataka, 570006, India
| | - Nagabhushana Chandra Mohana
- Microbial Drug Technological Laboratory, Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, Karnataka, 570006, India
| | - Bettadapura Rameshgowda Nuthan
- Microbial Drug Technological Laboratory, Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, Karnataka, 570006, India
| | - Devaraju Rakshith
- Microbial Drug Technological Laboratory, Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, Karnataka, 570006, India
| | - Sreedharamurthy Satish
- Microbial Drug Technological Laboratory, Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, Karnataka, 570006, India.
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Amorim EADF, Castro EJM, da Souza SV, Alves MS, Dias LRL, Melo MHF, da Silva IMA, Villis PCM, Bonfim MRQ, Falcai A, Silva MRC, Monteiro-Neto V, Aliança A, da Silva LCN, de Miranda RDCM. Antimicrobial Potential of Streptomyces ansochromogenes (PB 3) Isolated From a Plant Native to the Amazon Against Pseudomonas aeruginosa. Front Microbiol 2020; 11:574693. [PMID: 33162956 PMCID: PMC7581783 DOI: 10.3389/fmicb.2020.574693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 09/09/2020] [Indexed: 12/19/2022] Open
Abstract
The objective of this study was to evaluate the antibacterial action of filamentous bacteria isolated from the Byrsonima crassifolia leaf. An endophytic bacterium has been identified by classical and molecular techniques as Streptomyces ansochromogene. Screening for antibacterial action against pathogens with medical relevance (Klebsiella pneumoniae ATCC 700603, Pseudomonas aeruginosa ATCC 15692, Staphylococcus aureus ATCC 6538, Corynebacterium diphtheriae ATCC 27012, Mycobacterium abscessus, Cryptococcus gattii ATCC 24065, and Cryptococcus neoformans ATCC 24067) demonstrated activity against the bacterium P. aeruginosa ATCC 0030 with inhibition diameter zones (IDZ) of 17.6 ± 0.25 mm in the preliminary screening in solid medium. After fermentation in liquid medium, an IDZ of 19.6 ± 0.46 mm and a minimum inhibitory concentration (MIC) of 0.5 mg/mL were detected. The antibiofilm action was observed with 100% inhibition of biofilm formation at a concentration of 0.250 mg/mL. When the infection curve was prepared, it was observed that the metabolite was effective in protecting the larvae of Tenebrio molitor. The metabolite does not show toxicity for eukaryotic cells. The leishmanicidal activity demonstrated that the metabolite presented a dose-dependent effect on the promastigotes forms of Leishmania amazonensis growth and the estimated IC50/72 h was 71.65 ± 7.4 μg/mL. Therefore, it can be concluded that the metabolite produced by the endophytic bacterium Streptomyces sp. is promising for future use as an alternative strategy against bacterial resistance.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Angela Falcai
- Programa de Pós Graduação, Universidade CEUMA, São Luís, Brazil
| | | | - Valério Monteiro-Neto
- Programa de Pós Graduação, Universidade CEUMA, São Luís, Brazil
- Programa de Pós Graduação, Universidade Federal do Maranhão, São Luís, Brazil
| | - Amanda Aliança
- Programa de Pós Graduação, Universidade CEUMA, São Luís, Brazil
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11
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Shui F, Jia J, Yang X, Zhou Q, Jiang Y, Chen X. Synthesis of (+)-Epoxydon, (-)-Phyllostine, (-)-RKTS 33, and (-)-Parasitenone Featuring Selective Sulfonylation and Oxirane Ring Closure of Aldol Cyclization Products. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000486] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Shui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Junhao Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xing Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Yimin Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
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12
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Li TX, Meng DD, Guo YX, Bai B, Xu GG, Yang YN, Xie XY, Wang Y, Xu CP. Antioxidant epoxydon and benzolactone derivatives from the insect-associated fungus Phoma sp. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2020; 22:647-654. [PMID: 31120358 DOI: 10.1080/10286020.2019.1612380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/24/2019] [Indexed: 06/09/2023]
Abstract
One new epoxydon ester (1) and a new benzolactone derivative (2), along with four known compounds (3-6), were isolated from the insect-associated fungus Phoma sp. Their structures were confirmed by extensive MS and NMR spectroscopic analysis and their absolute configurations were determined by a combination of modified Mosher method and Mo2(OCOCH3)4-induced electronic circular dichroism (ECD) experiments. Compounds 1 and 5 were revealed to have potent antioxidant activities, which were approximate to the potency of the positive control trolox. In addition, 1 also exhibited moderate cytotoxic effect against human MGC-803 tumor cell line.[Formula: see text].
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Affiliation(s)
- Tian-Xiao Li
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
- Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450002, China
| | - Dan-Dan Meng
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Ya-Xin Guo
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Bing Bai
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Gai-Gai Xu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Ya-Nan Yang
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Xiao-Ying Xie
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Ying Wang
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Chun-Ping Xu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
- Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450002, China
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13
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Jayatilake PL, Munasinghe H. Antimicrobial Activity of Cultivable Endophytic and Rhizosphere Fungi Associated with "Mile-a-Minute," Mikania cordata (Asteraceae). BIOMED RESEARCH INTERNATIONAL 2020; 2020:5292571. [PMID: 32626746 PMCID: PMC7315265 DOI: 10.1155/2020/5292571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/12/2020] [Accepted: 06/02/2020] [Indexed: 11/30/2022]
Abstract
Endophytic and rhizosphere fungi are understood to be aiding the host plant to overcome a range of biotic and abiotic stresses (nutrition depletion, droughts, etc.) hence, they remain to be reservoirs of plethora of natural products with immense use. Consequently, this investigation of endophytic and rhizosphere fungi isolated from Mikania cordata (a perennial vine that is well established in Sri Lanka) for their antimicrobial properties was performed with the aim of future derivation of potential beneficial pharmaceutical products. Leaves, twigs, and roots of M. cordata were utilized to isolate a total of 9 endophytic fungi out of which the highest amount (44%) accounted was from the twigs. A sample of the immediate layer of soil adhering to the root of M. cordata was utilized to isolate 15 rhizosphere fungi. Fusarium equiseti and Phoma medicaginis were endophytes that were identified based on colony and molecular characteristics. The broad spectrum of antimicrobial activity depicted by F. equiseti (MK517551) was found to be significantly greater (p ≤ 0.05, inhibitory against Bacillus cereus ATCC 11778, Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, and Pseudomonas aeruginosa ATCC 25853) than P. medicaginis (MK517550) (inhibitory against Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, and Pseudomonas aeruginosa ATCC 25853) as assessed using the Kirby-Bauer disk diffusion method. Trichoderma virens and Trichoderma asperellum were rhizospere fungi that exhibited remarkable antimicrobial properties against the test pathogens chosen for the study. T. asperellum indicated significantly greater bioactivity against all four bacterial pathogens and Candida albicans ATCC 10231 under study. The ranges of minimum inhibitory concentrations (MICs) of the fungi depicting antimicrobial properties were determined. The results obtained suggest that F. equiseti, P. medicaginis, T. asperellum, and T. virens of M. cordata harness bioprospective values as natural drug candidates. This is the first report on isolation and evaluation of the antimicrobial properties of endophytic and rhizosphere fungi of Mikania cordata.
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Affiliation(s)
| | - Helani Munasinghe
- Department of Botany, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
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14
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Abstract
Marine natural products (MNPs) containing pyrone rings have been isolated
from numerous marine organisms, and also produced by marine fungi and bacteria, particularly,
actinomycetes. They constitute a versatile structure unit of bioactive natural
products that exhibit various biological activities such as antibiotic, antifungal, cytotoxic,
neurotoxic, phytotoxic and anti-tyrosinase. The two structure isomers of pyrone ring are γ-
pyrone and α-pyrone. In terms of chemical motif, γ-pyrone is the vinologous form of α-
pyrone which possesses a lactone ring. Actinomycete bacteria are responsible for the production
of several α-pyrone compounds such as elijopyrones A-D, salinipyrones and violapyrones
etc. to name a few. A class of pyrone metabolites, polypropionates which have
fascinating carbon skeleton, is primarily produced by marine molluscs. Interestingly, some
of the pyrone polytketides which are found in cone snails are actually synthesized by actinomycete bacteria.
Several pyrone derivatives have been obtained from marine fungi such as Aspergillums flavus, Altenaria sp.,
etc. The γ-pyrone derivative namely, kojic acid obtained from Aspergillus fungus has high commercial demand
and finds various applications. Kojic acid and its derivative displayed inhibition of tyrosinase activity and, it is
also extensively used as a ligand in coordination chemistry. Owing to their commercial and biological significance,
the synthesis of pyrone containing compounds has been given attention over the past years. Few reviews
on the total synthesis of pyrone containing natural products namely, polypropionate metabolites have been reported.
However, these reviews skipped other marine pyrone metabolites and also omitted discussion on isolation
and detailed biological activities. This review presents a brief account of the isolation of marine metabolites
containing a pyrone ring and their reported bio-activities. Further, the review covers the synthesis of marine
pyrone metabolites such as cyercene-A, placidenes, onchitriol-I, onchitriol-II, crispatene, photodeoxytrichidione,
(-) membrenone-C, lihualide-B, macrocyclic enol ethers and auripyrones-A & B.
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Affiliation(s)
- Keisham S. Singh
- Bio-organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona Paula-403004, Goa, India
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15
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Perlatti B, Lan N, Earp CE, AghaAmiri S, Vargas SH, Azhdarinia A, Bills GF, Gloer JB. Arenicolins: C-Glycosylated Depsides from Penicillium arenicola. JOURNAL OF NATURAL PRODUCTS 2020; 83:668-674. [PMID: 31999116 PMCID: PMC7495882 DOI: 10.1021/acs.jnatprod.9b01099] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
During investigation of the secondary metabolism of four strains of Penicillium arenicola, two new depsides, arenicolins A (1) and B (2), were isolated and characterized. Their structures were established mainly by analysis of NMR and HRMS data and by comparison with known compounds. These depsides incorporate intriguing structural features, including dual alkyl side chains and a C-glycosyl unit, with 1 also containing an acylated 2-hydroxymethyl-4,5,6-trihydroxycyclohexenone moiety. Although the arenicolins were produced by all strains tested, arenicolin A (1) was obtained using only one of five medium compositions employed, while arenicolin B (2) was produced in all media tested. Neither compound showed antibacterial or antifungal activity, but 1 exhibited cytotoxicity toward mammalian cell lines, including colorectal carcinoma (HCT-116), neuroblastoma (IMR-32), and ductal carcinoma (BT-474), with IC50 values of 7.3, 6.0, and 9.7 μM, respectively.
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Affiliation(s)
- Bruno Perlatti
- Texas Therapeutic Institute, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, Texas 77054, United States
| | - Nan Lan
- Texas Therapeutic Institute, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, Texas 77054, United States
| | - Cody E Earp
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Solmaz AghaAmiri
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas 77054, United States
| | - Servando Hernandez Vargas
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas 77054, United States
| | - Ali Azhdarinia
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas 77054, United States
| | - Gerald F Bills
- Texas Therapeutic Institute, The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, Texas 77054, United States
| | - James B Gloer
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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16
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Barzkar N, Tamadoni Jahromi S, Poorsaheli HB, Vianello F. Metabolites from Marine Microorganisms, Micro, and Macroalgae: Immense Scope for Pharmacology. Mar Drugs 2019; 17:E464. [PMID: 31398953 PMCID: PMC6723029 DOI: 10.3390/md17080464] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/26/2019] [Accepted: 07/27/2019] [Indexed: 12/21/2022] Open
Abstract
Marine organisms produce a large array of natural products with relevance in drug discovery. These compounds have biological activities such as antioxidant, antibacterial, antitumor, antivirus, anticoagulant, anti-inflammatory, antihypertensive, antidiabetic, and so forth. Consequently, several of the metabolites have made it to the advanced stages of clinical trials, and a few of them are commercially available. In this review, novel information on natural products isolated from marine microorganisms, microalgae, and macroalgae are presented. Given due research impetus, these marine metabolites might emerge as a new wave of promising drugs.
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Affiliation(s)
- Noora Barzkar
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas 74576, Iran.
| | - Saeid Tamadoni Jahromi
- Persian Gulf and Oman Sea Ecology Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas 93165, Iran.
| | - Hadi Bolooki Poorsaheli
- Road, Housing & Urban Development Research Center (BHRC), Persian Gulf Branch, Bandar Abbas 93144, Iran
- Department of Engineering, Islamic Azad University, Bandar Abbas 1696, Iran
| | - Fabio Vianello
- Department of Comparative Biomedicine and Food Science, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy
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17
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Pandey A. Pharmacological Potential of Marine Microbes. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2019. [DOI: 10.1007/978-3-030-04675-0_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Reveglia P, Savocchia S, Billones-Baaijens R, Cimmino A, Evidente A. Isolation of Phytotoxic Phenols and Characterization of a New 5-Hydroxymethyl-2-isopropoxyphenol from Dothiorella vidmadera, a Causal Agent of Grapevine Trunk Disease. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1760-1764. [PMID: 29397696 DOI: 10.1021/acs.jafc.7b05248] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polyphenols were characterized from Dothiorella vidmadera (DAR78993), which was isolated from a grapevine in Australia. In total, six polyphenols were isolated including a new polyphenol characterized by a spectroscopic method (essentially NMR and HR ESIMS) as 5-hydroxymethyl-2-isopropoxyphenol. Tyrosol, benzene-1,2,4-triol, resorcinol, 3-(hydroxymethyl)phenol, and protocatechuic alcohol, the latter being the main metabolite, were also isolated. Although these are already known as naturally occurring compounds in microorganisms and plants, this is the first time they have been isolated from fungal organisms involved in grapevine trunk disease. When assayed on tomato seedlings, all the compounds show similar phytotoxic effects. However, when assayed on grapevine leaves (Vitis vinifera cv Shiraz), resorcinol was the most toxic compound, followed by protocatechuic alcohol and 5-hydroxymethyl-2-isopropoxyphenol.
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Affiliation(s)
- Pierluigi Reveglia
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
- National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University , Locked Bag 588 Wagga, Wagga, NSW 2678, Australia
| | - Sandra Savocchia
- National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University , Locked Bag 588 Wagga, Wagga, NSW 2678, Australia
| | - Regina Billones-Baaijens
- National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University , Locked Bag 588 Wagga, Wagga, NSW 2678, Australia
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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20
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Abstract
The first synthesis of carbasugars, compounds in which the ring oxygen of a monosaccharide had been replaced by a methylene moiety, was described in 1966 by Professor G. E. McCasland’s group. Seven years later, the first true natural carbasugar (5a-carba-R-D-galactopyranose) was isolated from a fermentation broth of Streptomyces sp. MA-4145. In the following decades, the chemistry and biology of carbasugars have been extensively studied. Most of these compounds show interesting biological properties, especially enzymatic inhibitory activities, and, in consequence, an important number of analogues have also been prepared in the search for improved biological activities. The aim of this review is to give coverage on the progress made in two important aspects of these compounds: the elucidation of their biosynthesis and the consideration of their biological properties, including the extensively studied carbapyranoses as well as the much less studied carbafuranoses.
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21
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22
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Abstract
This review covers the literature published in 2014 for marine natural products (MNPs), with 1116 citations (753 for the period January to December 2014) 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 (1378 in 456 papers for 2014), 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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23
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Dos Santos IP, da Silva LCN, da Silva MV, de Araújo JM, Cavalcanti MDS, Lima VLDM. Antibacterial activity of endophytic fungi from leaves of Indigofera suffruticosa Miller (Fabaceae). Front Microbiol 2015; 6:350. [PMID: 25999918 PMCID: PMC4423342 DOI: 10.3389/fmicb.2015.00350] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 04/08/2015] [Indexed: 11/21/2022] Open
Abstract
Endophytic fungi were isolated from healthy leaves of Indigofera suffruticosa Miller, a medicinal plant found in Brazil which is used in folk medicine to treat various diseases. Among 65 endophytic fungi isolated, 18 fungi showed activity against at least one tested microorganism in preliminary screening, and the best results were obtained with Nigrospora sphaerica (URM-6060) and Pestalotiopsis maculans (URM-6061). After fermentation in liquid media and in semisolid media, only N. sphaerica demonstrated antibacterial activity (in Potato Dextrose Broth-PDB and in semisolid rice culture medium). In the next step, a methanolic extract from rice culture medium (NsME) and an ethyl acetate extract (NsEAE) from the supernatant of PDB were prepared and both exhibited antimicrobial activity against Gram-negative and Gram-positive bacteria. The best result was observed against Staphylococcus aureus, with minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of 1.56 mg/mL and 6.25 mg/mL, respectively, for NsME and MIC and MBC values of 0.39 mg/mL and 3.12 mg/mL, respectively, for NsEAE. This study is the first report about the antimicrobial activity of endophytic fungi residing in I. suffruticosa leaves, in which the fungus N. sphaerica demonstrated the ability to produce bioactive agents with pharmaceutical potential, and may provide a new lead in the pursuit of new biological sources of drug candidates.
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Affiliation(s)
- Irailton Prazeres Dos Santos
- Departamento de Micologia, Centro de Ciências Biológicas, Universidade Federal de Pernambuco Recife, Brazil ; Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco Recife, Brazil
| | | | - Márcia Vanusa da Silva
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco Recife, Brazil
| | - Janete Magali de Araújo
- Departamento de Antibióticos, Centro de Ciências Biológicas, Universidade Federal de Pernambuco Recife, Brazil
| | | | - Vera Lucia de Menezes Lima
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco Recife, Brazil
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24
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Zhang QH, Tian L, Sun ZL, Fang S, Cai GL, Wang YJ, Pei YH. Two new secondary metabolites from the marine-derived fungus Nigrospora sphaerica. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 17:497-503. [PMID: 25798885 DOI: 10.1080/10286020.2015.1009899] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two new secondary metabolites, (2S)-5-acetamidopentyl-2-hydroxypropanoate (1) and 2, 5, 7-trihydroxy-4-(3'-methylbut-2'-en-1'-yl) oxy-2H-naphtho [1, 8-b c] furan-9-one (2) were isolated from the marine-derived fungus Nigrospora sphaerica. The structures were established on the basis of their spectroscopic data, including 1D NMR and 2D NMR, HR-TOF-MS, and the absolute configuration of compound 1 was determined by the Mosher method.
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Affiliation(s)
- Qi-Hui Zhang
- a School of Chemistry and Chemical Engineering, Chongqing University , Chongqing 400044 , China
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25
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Malak L, Ibrahim MA, Bishay D, Abdel-baky AM, Moharram AM, Tekwani B, Cutler S, Ross SA. Antileishmanial metabolites from Geosmithia langdonii. JOURNAL OF NATURAL PRODUCTS 2014; 77:1987-91. [PMID: 25084548 PMCID: PMC4176393 DOI: 10.1021/np5000473] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Indexed: 05/18/2023]
Abstract
Antileishmanial bioassay guided fractionation of Geosmithia langdonii has resulted in the isolation and identification of two new compounds (1 and 2) together with 10 known compounds (3-12). The structures of the isolated metabolites were elucidated based on comprehensive 1D and 2D NMR spectroscopic data as well as mass spectrometry. The absolute configuration at C4, C5, and C6 of 2 was determined as R using a modified Mosher esterification method and NOESY correlations. The extracts and the isolated metabolites were evaluated for their antileishmanial activities. Compounds 3, 9, 11, and 12 were found to be active against Leishmania donovani with IC50 values of 6.9, 3.3, 8.5, and 9.2 μM, respectively, while compounds 1, 5, and 10 showed lower activities against L. donovani with IC50 values of 13.0, 47.3, and 34.0 μM, respectively.
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Affiliation(s)
- Lourin
G. Malak
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Sciences, School of Pharmacy, The University
of Mississippi, University, Mississippi 38677, United States
- Pharmacognosy
Department, Faculty of Pharmacy, Assiut
University, Assiut 71526, Egypt
| | - Mohamed Ali Ibrahim
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Sciences, School of Pharmacy, The University
of Mississippi, University, Mississippi 38677, United States
- Department
of Chemistry of Natural Compounds, National
Research Center, Dokki 12622, Cairo, Egypt
| | - Daoud
W. Bishay
- Pharmacognosy
Department, Faculty of Pharmacy, Assiut
University, Assiut 71526, Egypt
| | - Afaf M. Abdel-baky
- Pharmacognosy
Department, Faculty of Pharmacy, Assiut
University, Assiut 71526, Egypt
| | - Ahmed M. Moharram
- Assiut
University Mycological Center, Assiut University, Assiut 71515, Egypt
| | - Babu Tekwani
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Sciences, School of Pharmacy, The University
of Mississippi, University, Mississippi 38677, United States
- BioMolecular
Sciences Department, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Stephen
J. Cutler
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Sciences, School of Pharmacy, The University
of Mississippi, University, Mississippi 38677, United States
- BioMolecular
Sciences Department, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Samir A. Ross
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Sciences, School of Pharmacy, The University
of Mississippi, University, Mississippi 38677, United States
- BioMolecular
Sciences Department, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
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26
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Nocapyrones: α- and γ-pyrones from a marine-derived Nocardiopsis sp. Mar Drugs 2014; 12:4110-25. [PMID: 25007160 PMCID: PMC4113818 DOI: 10.3390/md12074110] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 06/04/2014] [Accepted: 06/20/2014] [Indexed: 12/29/2022] Open
Abstract
One new α-pyrone (nocapyrone R (1)), and three known γ-pyrones (nocapyrones B, H and L (2-4)) were isolated from the culture extract of a Nocardiopsis strain collected from marine sediment. Structures of these compounds were determined on the basis of spectroscopic data including NMR and MS. γ-Pyrones 2-4 were found to induce adiponectin production in murine ST-13 preadipocyte cells but the α-pyrone 1 had no activity. The absolute configuration of the anteiso-methyl branching in 4 was determined by HPLC comparison of a degraded product of 4 with standard samples as a 2:3 enantiomeric mixture of (R)- and (S)-isomers.
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27
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Metwaly AM, Kadry HA, El-Hela AA, Mohammad AEI, Ma G, Cutler SJ, Ross SA. Nigrosphaerin A a new isochromene derivative from the endophytic fungus Nigrospora sphaerica. PHYTOCHEMISTRY LETTERS 2014; 7:1-5. [PMID: 27708743 PMCID: PMC5047436 DOI: 10.1016/j.phytol.2013.09.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Nigrosphaerin A, a new isochromene derivative (1), was isolated from the endophytic fungus Nigrospora sphaerica and chemically identified as 3-(3,4-dihydroxyphenyl)-4,6,8-trihydroxy-1H-isochromen-1-one-6-O-β-d-glucopyranoside. In addition nineteen known compounds (2-20) were isolated from the same fungus and chemically identified. Compounds (1-3, 5, and 7-16) were isolated for the first time from this fungus. In vitro antileukemic, antileishmanial, antifungal, antibacterial and antimalarial activities of (1-20) were examined. Compounds 5, 7, 9 and 10 showed good antileukemic activity against HL60 cells with IC50 values of 0.03, 0.39, 0.2 and 0.4 μg/mL, respectively and against K562 cells with IC50 values of 0.35, 0.35, 0.49 and 0.01 μg/mL, respectively. Compounds 3, 4 and 6 showed moderate antileishmanial activity with IC50 values of 30.2, 26.4 and 36.4 μg/ml, respectively. Compound 7 showed moderate antifungal activity against Cryptococcus neoformans with IC50 value of 14.8 μg/mL.
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Affiliation(s)
- Ahmed M. Metwaly
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Department of Pharmacognosy, Faculty of Pharmacy, University of Al-Azhar, Cairo, Egypt
| | - Hazem A. Kadry
- Department of Pharmacognosy, Faculty of Pharmacy, University of Al-Azhar, Cairo, Egypt
| | - Atef A. El-Hela
- Department of Pharmacognosy, Faculty of Pharmacy, University of Al-Azhar, Cairo, Egypt
| | | | - Guoyi Ma
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Stephen J. Cutler
- Department of Medicinal Chemistry, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Samir A. Ross
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Corresponding author at: National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA. Tel.: +1 662 915 1031; fax: +1 662 915 7989. (S.A. Ross)
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Palladium-catalyzed cross-coupling of cyclopropylmethyl N-tosylhydrazones with aromatic bromides: an easy access to multisubstituted 1,3-butadienes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Abstract
This review covers the literature published in 2011 for marine natural products, with 870 citations (558 for the period January to December 2011) 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 (1152 for 2011), 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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30
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Bayón P, Figueredo M. The gabosine and anhydrogabosine family of secondary metabolites. Chem Rev 2013; 113:4680-707. [PMID: 23597176 DOI: 10.1021/cr300150w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pau Bayón
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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Jiang H, He L, Li X, Chen H, Wu W, Fu W. Facile synthesis of dibranched conjugated dienes via palladium-catalyzed oxidative coupling of N-tosylhydrazones. Chem Commun (Camb) 2013; 49:9218-20. [DOI: 10.1039/c3cc43593h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Ouchbani T, Zouihri H, Essassi EM, Proksch P, Ng SW. (3R,4S)-3,4,8-Trihy-droxy-1,2,3,4-tetra-hydro-naphthalen-1-one monohydrate from Embellisia eureka. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1874. [PMID: 22719635 PMCID: PMC3379437 DOI: 10.1107/s1600536812022623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 05/17/2012] [Indexed: 11/13/2022]
Abstract
In the title hydrate, C10H10O4·H2O, the six-membered aliphatic ring that is fused to the benzene ring has a sofa shape, with the hydroxy group in the 3-position (that represents the sofa back) of the aliphatic ring occupying a quasi-axial position. The hydroxy group of the aromatic ring is hydrogen-bond donor to the carbonyl O atom; other O—H⋯O hydrogen bonds link the organic molecules and the water molecules into a three-dimensional network.
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Wang YN, Shao CL, Zheng CJ, Chen YY, Wang CY. Diversity and antibacterial activities of fungi derived from the Gorgonian Echinogorgia rebekka from the South China Sea. Mar Drugs 2011; 9:1379-1390. [PMID: 21892352 PMCID: PMC3164380 DOI: 10.3390/md9081379] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 07/11/2011] [Accepted: 07/15/2011] [Indexed: 11/16/2022] Open
Abstract
The diversity of symbiotic fungi associated with the gorgonian coral Echinogorgia rebekka from the Weizhou coral reef in the South China Sea was investigated. Combined with morphologic traits, ITS-rDNA sequences revealed 18 fungal strains from this gorgonian. All of the 18 fungi belonged to the phylum Ascomycota and were distributed among seven genera in five orders: Eurotiales (Aspergillus and Penicillium), Pleosporales (Alternaria), Capnodiales (Cladosporium), Trichosphaeriales (Nigrospora) and Hypocreales (Hypocrea and Nectria). Antibacterial activities of these fungal strains were investigated with five pathogenic bacteria. All of the 18 fungal strains displayed different levels of antibacterial activities, most of which exhibited moderate to high antibacterial activities to the Gram-positive pathogens Staphylococcus aureus and Micrococcus tetragenus, and showed relatively low bioactivities to other three pathogenic bacteria. Several fungal strains in the genera Penicillium and Cladosporium with strong antibacterial activities provide potential for further research on isolation of bioactive secondary metabolites.
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Affiliation(s)
- Ya-Nan Wang
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; E-Mails: (Y.-N.W.); (C.-L.S.); (C.-J.Z.); (Y.-Y.C.)
- Department of Biology, Qingdao University, Qingdao 266071, China
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; E-Mails: (Y.-N.W.); (C.-L.S.); (C.-J.Z.); (Y.-Y.C.)
| | - Cai-Juan Zheng
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; E-Mails: (Y.-N.W.); (C.-L.S.); (C.-J.Z.); (Y.-Y.C.)
| | - Yi-Yan Chen
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; E-Mails: (Y.-N.W.); (C.-L.S.); (C.-J.Z.); (Y.-Y.C.)
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; E-Mails: (Y.-N.W.); (C.-L.S.); (C.-J.Z.); (Y.-Y.C.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel./Fax: +86-532-8203-1536
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Modiolide and pyrone derivatives from the sea fan-derived fungus Curvularia sp. PSU-F22. Arch Pharm Res 2011; 34:709-14. [DOI: 10.1007/s12272-011-0502-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Accepted: 09/26/2010] [Indexed: 10/18/2022]
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Jacobsen MJ, Funder ED, Cramer JR, Gothelf KV. β-Olefination of 2-alkynoates leading to trisubstituted 1,3-dienes. Org Lett 2011; 13:3418-21. [PMID: 21648453 DOI: 10.1021/ol2011677] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A phosphine-mediated olefination of 2-alkynoates with aldehydes forming 1,3-dienes with high E-selectivity and up to 88% yield is described. Reaction conditions are optimized and reactions are demonstrated for various aryl, alkyl, and alkenyl aldehydes and for ethyl 2-alkynoates with different substituents in the δ-position. Proof of concept is shown for the generation of a β,γ-unsaturated lactone by intramolecular olefination, and furthermore the use of the generated 1,3-dienes in the Diels-Alder reaction has been demonstrated.
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Affiliation(s)
- Mathias J Jacobsen
- Danish National Research Foundation: Centre for DNA Nanotechnology (CDNA) at Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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Antia BS, Aree T, Kasettrathat C, Wiyakrutta S, Ekpa OD, Ekpe UJ, Mahidol C, Ruchirawat S, Kittakoop P. Itaconic acid derivatives and diketopiperazine from the marine-derived fungus Aspergillus aculeatus CRI322-03. PHYTOCHEMISTRY 2011; 72:816-820. [PMID: 21397285 DOI: 10.1016/j.phytochem.2011.02.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 12/27/2010] [Accepted: 02/14/2011] [Indexed: 05/30/2023]
Abstract
Three metabolites, pre-aurantiamine (1), (-)-9-hydroxyhexylitaconic acid (4) and (-)-9-hydroxyhexylitaconic acid-4-methyl ester (5), together with two known compounds, paraherquamide E (6) and secalonic acid D (7), were isolated from the marine-derived fungus, Aspergillus aculeatus.
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Xu J, Aly AH, Wray V, Proksch P. Polyketide derivatives of endophytic fungus Pestalotiopsis sp. isolated from the Chinese mangrove plant Rhizophora mucronata. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.10.131] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Trisuwan K, Khamthong N, Rukachaisirikul V, Phongpaichit S, Preedanon S, Sakayaroj J. Anthraquinone, cyclopentanone, and naphthoquinone derivatives from the sea fan-derived fungi Fusarium spp. PSU-F14 and PSU-F135. JOURNAL OF NATURAL PRODUCTS 2010; 73:1507-1511. [PMID: 20815366 DOI: 10.1021/np100282k] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Five new metabolites, fusaranthraquinone (1), fusarnaphthoquinones A-C (2-4), and fusarone (5), were isolated from the sea fan-derived fungi Fusarium spp. PSU-F14 and PSU-F135 along with 18 known compounds. The structures were elucidated on the basis of spectroscopic evidence. Their antibacterial, antifungal, antimycobacterial, antimalarial, and cytotoxic activities were examined.
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Affiliation(s)
- Kongkiat Trisuwan
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
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Abstract
Marine bacteria and fungi are of considerable importance as new promising sources of a huge number of biologically active products. Some of these marine species live in a stressful habitat, under cold, lightless and high pressure conditions. Surprisingly, a large number of species with high diversity survive under such conditions and produce fascinating and structurally complex natural products. Up till now, only a small number of microorganisms have been investigated for bioactive metabolites, yet a huge number of active substances with some of them featuring unique structural skeletons have been isolated. This review covers new biologically active natural products published recently (2007-09) and highlights the chemical potential of marine microorganisms, with focus on bioactive products as well as on their mechanisms of action.
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Affiliation(s)
- Abdessamad Debbab
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine Universitaet Duesseldorf, Germany
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Rukachaisirikul V, Khamthong N, Sukpondma Y, Phongpaichit S, Hutadilok-Towatana N, Graidist P, Sakayaroj J, Kirtikara K. Cyclohexene, diketopiperazine, lactone and phenol derivatives from the sea fan-derived fungi Nigrospora sp. PSU-F11 and PSU-F12. Arch Pharm Res 2010; 33:375-80. [DOI: 10.1007/s12272-010-0305-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Revised: 01/06/2010] [Accepted: 01/17/2010] [Indexed: 11/24/2022]
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45
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Phylogenetic diversity of endophyte assemblages associated with the tropical seagrass Enhalus acoroides in Thailand. FUNGAL DIVERS 2010. [DOI: 10.1007/s13225-009-0013-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Blunt JW, Copp BR, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2010; 27:165-237. [DOI: 10.1039/b906091j] [Citation(s) in RCA: 322] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Zhang QH, Tian L, Zhou LD, Zhang Y, Li ZF, Hua HM, Pei YH. Two new compounds from the marine Nigrospora sphaerica. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2009; 11:962-966. [PMID: 20183261 DOI: 10.1080/10286020903339614] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two new compounds, 1-(5-oxotetrahydrofuran-2-yl)ethyl 2-phenylacetate (1) and 3-hydroxybutan-2-yl 2-hydroxy-3-phenylpropanoate (2), along with three known compounds, harzialactone A (3), benzeneethanol 4-hydroxy-1-acetate (4), and 1,4-dioxane-2,5-dione-3,6-bis(penylmethyl)-homopolymer (5), have been isolated from the fungus Nigrospora sphaerica. Their structures were determined on the basis of chemical and spectroscopic methods.
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Affiliation(s)
- Qi-Hui Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
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48
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Kim ES, Kim KH, Kim SH, Kim JN. Expedient synthesis of highly substituted α-pyrones from Baylis–Hillman adducts and their conversion to poly-substituted aromatics. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.06.124] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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49
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Rukachaisirikul V, Khamthong N, Sukpondma Y, Pakawatchai C, Phongpaichit S, Sakayaroj J, Kirtikara K. An [11]Cytochalasin Derivative from the Marine-Derived Fungus Xylaria sp. PSU-F100. Chem Pharm Bull (Tokyo) 2009; 57:1409-11. [DOI: 10.1248/cpb.57.1409] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Vatcharin Rukachaisirikul
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Prince of Songkla University
| | - Nanthaphong Khamthong
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Prince of Songkla University
| | - Yaowapa Sukpondma
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Prince of Songkla University
| | - Chaveng Pakawatchai
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Prince of Songkla University
| | - Souwalak Phongpaichit
- Natural Products Research Center and Department of Microbiology, Faculty of Science, Prince of Songkla University
| | - Jariya Sakayaroj
- National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand
| | - Kanyawim Kirtikara
- National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand
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