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Cardeal Dos Santos AN, da Cruz Freire JE, Rodrigues BF, Ferreira-da-Silva FW, Júnior JERH, Leal Cardoso JH, de Souza ANC. Translational Perspectives on the Therapeutic Potential of Hyptis Crenata Essential Oil Terpenes in Smooth Muscle Function. PLANTA MEDICA 2024. [PMID: 39227040 DOI: 10.1055/a-2409-3735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Monoterpenes and sesquiterpenes are classes of organic compounds found in various natural products, such as the essential oil of Hyptis crenata (EOHc). The therapeutic potential of these terpenes present in EOHc is evidenced by their effect on smooth muscle and potential clinical applications. Among the highlighted monoterpenes, such as sabinene, α-pinene, and β-pinene, a relaxing effect on rat intestinal smooth muscles is observed, attributed to interaction with calcium channels. Furthermore, monoterpenoids like borneol, cineole, and linalool also demonstrate vasorelaxant properties, suggesting potential in the treatment of cardiovascular conditions. Sesquiterpenes, such as caryophyllene and aromadendrenes, exhibit relaxing effects in various smooth muscle tissues, such as rat uterus and guinea pig ileum, indicating pharmacological potential in these areas. The translational exploration of targets, such as calcium channels and G protein-coupled receptors, highlights the importance of these compounds in discovering new therapies based on natural products for treating various medical conditions.
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Affiliation(s)
| | - José Ednésio da Cruz Freire
- Biochemistry and Gene Expression Laboratory, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza, Ceará, Brazil
| | - Bruna Ferreira Rodrigues
- Experimental Physiology Laboratory, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza, Ceará, Brazil
| | | | | | - José Henrique Leal Cardoso
- Electrophysiology Laboratory, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza, Ceará, Brazil
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2
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Lai D, Gan G. Three previously undescribed nor-eremophilane sesquiterpenoids from the fungus Penicillium sp. L1 associated with basalt fibre. Nat Prod Res 2024:1-8. [PMID: 38885305 DOI: 10.1080/14786419.2024.2367237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 06/05/2024] [Indexed: 06/20/2024]
Abstract
Three new nor-eremophilane sesquiterpenoids, namely nor-eremophilanol A-C (1-3), along with two known eremophilanes (4-5), were isolated from the culture of the fungus Penicillium sp. L1 that was obtained from the surface of basalt fibre composite bars. The structures of the new compounds were elucidated by a combined analysis of the 1D, 2D NMR, and HRMS spectroscopic data, and the absolute configuration of 1 was determined by the modified Mosher's method. The biosynthetic pathway leading to the nor-eremophilanes were proposed with the oxidative cleavage of the double bond as a key step. Compound 1 displayed antibacterial activities against the tested pathogenic bacteria.
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Affiliation(s)
- Daohui Lai
- Guangxi Science & Technology Normal University, Laibin, Guangxi, P.R. China
| | - Guorong Gan
- Guangxi Science & Technology Normal University, Laibin, Guangxi, P.R. China
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3
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Sato Y, Shi X, Ye Y, Domon S, Takino J, Ozaki T, Liu C, Oikawa H, Minami A. Bioinformatics-Guided Reconstitution of Biosynthetic Machineries of Fungal Eremophilane Sesquiterpenes. ACS Chem Biol 2024; 19:861-865. [PMID: 38568215 DOI: 10.1021/acschembio.4c00040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Eremophilanes exhibit diverse biological activities and chemical structures. This study reports the bioinformatics-guided reconstitution of the biosynthetic machinery of fungal eremophilanes, eremofortin C and sporogen-AO1, to elucidate their biosynthetic pathways. Their biosyntheses include P450-catalyzed multistep oxidation and enzyme-catalyzed isomerization by the DUF3237 family protein. Successful characterization of six P450s enabled us to discuss the functions of eremophilane P450s in putative eremophilane biosynthetic gene clusters, providing opportunities to understand the oxidative modification pathways of fungal eremophilanes.
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Affiliation(s)
- Yoshiro Sato
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Xinge Shi
- Key Laboratory for Enzyme and Enzyme-like Material Engineering of Heilongjiang, College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Ying Ye
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Saori Domon
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Junya Takino
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Taro Ozaki
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Chengwei Liu
- Key Laboratory for Enzyme and Enzyme-like Material Engineering of Heilongjiang, College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Hideaki Oikawa
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
- Innovation Center of Marine Biotechnology and Pharmaceuticals, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Atsushi Minami
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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4
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Sun Y, Xin J, Xu Y, Wang X, Zhao F, Niu C, Liu S. Research Progress on Sesquiterpene Compounds from Artabotrys Plants of Annonaceae. Molecules 2024; 29:1648. [PMID: 38611927 PMCID: PMC11013193 DOI: 10.3390/molecules29071648] [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: 02/29/2024] [Revised: 03/27/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024] Open
Abstract
Artabotrys, a pivotal genus within the Annonaceae family, is renowned for its extensive biological significance and medicinal potential. The genus's sesquiterpene compounds have attracted considerable interest from the scientific community due to their structural complexity and diverse biological activities. These compounds exhibit a range of biological activities, including antimalarial, antibacterial, anti-inflammatory analgesic, and anti-tumor properties, positioning them as promising candidates for medical applications. This review aims to summarize the current knowledge on the variety, species, and structural characteristics of sesquiterpene compounds isolated from Artabotrys plants. Furthermore, it delves into their pharmacological activities and underlying mechanisms, offering a comprehensive foundation for future research.
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Affiliation(s)
- Yupei Sun
- School of Pharmacy, Yantai University, Yantai 264005, China; (Y.S.); (Y.X.); (X.W.)
| | - Jianzeng Xin
- School of Life Sciences, Yantai University, Yantai 264005, China;
| | - Yaxi Xu
- School of Pharmacy, Yantai University, Yantai 264005, China; (Y.S.); (Y.X.); (X.W.)
| | - Xuyan Wang
- School of Pharmacy, Yantai University, Yantai 264005, China; (Y.S.); (Y.X.); (X.W.)
| | - Feng Zhao
- School of Pharmacy, Yantai University, Yantai 264005, China; (Y.S.); (Y.X.); (X.W.)
| | - Changshan Niu
- College of Pharmacy, University of Utah, Salt Lake City, UT 84108, USA
| | - Sheng Liu
- School of Pharmacy, Yantai University, Yantai 264005, China; (Y.S.); (Y.X.); (X.W.)
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5
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Wei SS, Lai JY, Chen C, Zhang YJ, Nong XM, Qiu KD, Duan FF, Zou ZX, Tan HB. Sesquiterpenes and α-pyrones from an endophytic fungus Xylaria curta YSJ-5. PHYTOCHEMISTRY 2024; 220:114011. [PMID: 38367793 DOI: 10.1016/j.phytochem.2024.114011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/19/2024]
Abstract
Chemical investigation of the culture extract of an endophyte Xylaria curta YSJ-5 from Alpinia zerumbet (Pers.) Burtt. et Smith resulted in the isolation of eight previously undescribed compounds including five eremophilane sesquiterpenes xylarcurenes A-E, one norsesquiterpene xylarcurene F, and two α-pyrone derivatives xylarpyrones A-B together with eight known related derivatives. Their chemical structures were extensively established based on the 1D- and 2D-NMR spectroscopic analysis, modified Mosher's method, electronic circular dichroism calculations, single-crystal X-ray diffraction experiments, and the comparison with previous literature data. All these compounds were tested for in vitro cytotoxic, anti-inflammatory, α-glucosidase inhibitory, and antibacterial activities. As a result, 6-pentyl-4-methoxy-pyran-2-one was disclosed to display significant antibacterial activity against Staphylococcus aureus and methicillin-resistant S. aureus with minimal inhibitory concentration value of 6.3 μg/mL.
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Affiliation(s)
- Shan-Shan Wei
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jia-Ying Lai
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Chen
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha Hunan 410013, China
| | - Yan-Jiang Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin-Miao Nong
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Kai-Di Qiu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang-Fang Duan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zhen-Xing Zou
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha Hunan 410013, China.
| | - Hai-Bo Tan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha Hunan 410013, China.
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Virués-Segovia JR, Millán C, Pinedo C, González-Rodríguez VE, Papaspyrou S, Zorrilla D, Mackenzie TA, Ramos MC, de la Cruz M, Aleu J, Durán-Patrón R. New Eremophilane-Type Sesquiterpenes from the Marine Sediment-Derived Fungus Emericellopsis maritima BC17 and Their Cytotoxic and Antimicrobial Activities. Mar Drugs 2023; 21:634. [PMID: 38132955 PMCID: PMC10745059 DOI: 10.3390/md21120634] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/30/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
The fungal strain BC17 was isolated from sediments collected in the intertidal zone of the inner Bay of Cadiz and characterized as Emericellopsis maritima. On the basis of the one strain-many compounds (OSMAC) approach, four new eremophilane-type sesquiterpenes (1-4), together with thirteen known derivatives (5-17) and two reported diketopiperazines (18, 19), were isolated from this strain. The chemical structures and absolute configurations of the new compounds were determined through extensive NMR and HRESIMS spectroscopic studies and ECD calculation. Thirteen of the isolated eremophilanes were examined for cytotoxic and antimicrobial activities. PR toxin (16) exhibited cytotoxic activity against HepG2, MCF-7, A549, A2058, and Mia PaCa-2 human cancer cell lines with IC50 values ranging from 3.75 to 33.44 µM. (+)-Aristolochene (10) exhibited selective activity against the fungal strains Aspergillus fumigatus ATCC46645 and Candida albicans ATCC64124 at 471 µM.
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Affiliation(s)
- Jorge R. Virués-Segovia
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Carlos Millán
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
| | - Cristina Pinedo
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Victoria E. González-Rodríguez
- Laboratorio de Microbiología, Departamento de Biomedicina, Biotecnología y Salud Pública, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain;
| | - Sokratis Papaspyrou
- Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain;
| | - David Zorrilla
- Departamento de Química Física, Facultad de Ciencias, Universidad de Cádiz, Campus Universitario Puerto Real s/n, Puerto Real, 11510 Cádiz, Spain;
| | - Thomas A. Mackenzie
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, 18016 Granada, Spain; (T.A.M.); (M.C.R.); (M.d.l.C.)
| | - María C. Ramos
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, 18016 Granada, Spain; (T.A.M.); (M.C.R.); (M.d.l.C.)
| | - Mercedes de la Cruz
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, 18016 Granada, Spain; (T.A.M.); (M.C.R.); (M.d.l.C.)
| | - Josefina Aleu
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Rosa Durán-Patrón
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (J.R.V.-S.); (C.M.); (C.P.)
- Instituto de Investigación en Biomoléculas (INBIO), Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
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7
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Sun Y, Gerke J, Becker K, Kuhnert E, Verwaaijen B, Wibberg D, Kalinowski J, Stadler M, Cox RJ. Rapid discovery of terpene tailoring enzymes for total biosynthesis. Chem Sci 2023; 14:13463-13467. [PMID: 38033887 PMCID: PMC10686045 DOI: 10.1039/d3sc04172g] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023] Open
Abstract
Twenty oxygenated aristolochene congeners were rapidly synthesised by combining genes from four different fungal pathways in the fungal host organism Aspergillus oryzae. Compounds produced in a single step include the natural product hypoxylan A and an epimer of guignaderemophilane C. A new fungal aromatase was discovered that produces phenols by oxidative demethylation.
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Affiliation(s)
- Yunlong Sun
- Institute for Organic Chemistry, Leibniz Universität Hannover Germany
| | - Jennifer Gerke
- Institute for Organic Chemistry, Leibniz Universität Hannover Germany
| | - Kevin Becker
- Institute for Organic Chemistry, Leibniz Universität Hannover Germany
| | - Eric Kuhnert
- Institute for Organic Chemistry, Leibniz Universität Hannover Germany
| | | | | | | | - Marc Stadler
- Helmholtz-Zentrum für Infektionsforschung Braunschweig Germany
| | - Russell J Cox
- Institute for Organic Chemistry, Leibniz Universität Hannover Germany
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Mo S, Huang Z, Ye Z, Yin J, Zhang S, Yao J, Zhang Y, Huang Z, Zeng H, Hu Z, Wang J, Zhang Y. Ten undescribed eremophilane and guaiane sesquiterpenes from Penicillium roqueforti. PHYTOCHEMISTRY 2023:113722. [PMID: 37230212 DOI: 10.1016/j.phytochem.2023.113722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/06/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023]
Abstract
Nine undescribed eremophilane sesquiterpenes, one undescribed guaiane sesquiterpene, along with ten known analogues were isolated and identified from fungus Penicillium roqueforti, which was separated from the root soil of Hypericum beanii N. Robson collected from the Shennongjia Forestry District, Hubei Province. Their structures were elucidated on the basis of various spectroscopic analyses, mainly including NMR and HRESIMS data, 13C NMR calculation with DP4+ probability analyses, ECD calculations, and single-crystal X-ray diffraction experiments. Furthermore, all twenty compounds were evaluated for the in vitro cytotoxic activities against seven human tumor cell lines, and the result suggested that 14-hydroxymethylene-1(10)-ene-epi-guaidiol A exhibited considerable cytotoxic activity against the Farage (IC50 < 10 μM, 48 h), SU-DHL-2, and HL-60 cells. Further mechanism study demonstrated that 14-hydroxymethylene-1(10)-ene-epi-guaidiol A could significantly promote apoptosis by inhibiting tumor cell respiration and decreasing intracellular ROS levels, thereby inducing S-phase blockade in tumor cells.
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Affiliation(s)
- Shuyuan Mo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Zhangyan Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Zi Ye
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jie Yin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Sitian Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jun Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Yaxin Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Zhihong Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Hanxiao Zeng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Zhengxi Hu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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Zhang J, Liu D, Fan A, Huang J, Lin W. Eremophilane-Type Sesquiterpenes from a Marine-Derived Fungus Penicillium Copticola with Antitumor and Neuroprotective Activities. Mar Drugs 2022; 20:712. [PMID: 36421990 PMCID: PMC9698232 DOI: 10.3390/md20110712] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 05/31/2024] Open
Abstract
Chemical examination of a marine sponge-associated Penicillium copticola fungus resulted in the isolation of ten undescribed eremophilanes, namely copteremophilanes A-J (1-10), along with two new glycosides, 5-glycopenostatin F (11) and 5-glucopenostatin I (12). Their structures were determined by extensive spectroscopic data, in association with ECD data and chemical conversions for configurational assignments. Analogs 1, 2, and 10 represent a group of uncommon skeletons of eremophilanes with an aromatic ring and a methyl migration from C-5 to C-9, and analogs 11 and 12 are characteristic of a PKS scaffold bearing a glucose unit. The incorporation of a chlorinated phenylacetic unit in 3-9 is rarely found in nature. Analog 7 showed neuroprotective effect, whereas 8 exhibited selective inhibition against human non-small cell lung cancer cells (A549). This study enriched the chemical diversity of eremophilanes and extended their bioactivities to neuroprotection.
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Affiliation(s)
- Jianping Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Dong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Aili Fan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Jian Huang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
- Institute of Ocean Research, Ningbo Institute of Marine Medicine, Peking University, Ningbo 315010, China
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10
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Zang Y, Zhou B, Wei M, Shi Z, Feng G, Deng M, Zhu H, Zhang Y, Zhu H. Aureoterrolides B‒M: Eremophilane-type sesquiterpenoids isolated from Aspergillus aureoterreus and their cytotoxicity. PHYTOCHEMISTRY 2022; 202:113294. [PMID: 35803304 DOI: 10.1016/j.phytochem.2022.113294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/07/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Uncovered by genome sequence analyses, twelve undescribed sesquiterpenoids designated aureoterrolides B‒M, were isolated from the culture broth of the fungus Aspergillus aureoterreus together with two known analogues. They are unusual eremophilanes with an oxidized C-4, of which aureoterrolide J is an unreported furanoeremophilane comprising a 3/6/6/5/3 pentacyclic architecture with a rare 3,6-spiro ring system. Their structures and absolute configurations were unambiguously assigned by extensive spectroscopic method and theoretical ECD calculation. All isolated compounds were evaluated their cytotoxicity, and aureoterrolides A, B, and I-K showed moderate cytotoxic activity against three human cancer cell lines (HL-60, HepG-2, and SKOV-3) with IC50 values ranging from 4.53 ± 0.05 to 24.71 ± 0.16 μM. Among them, aureoterrolide A exhibited activity such close to the positive control and apoptotic effect on HL-60 cells at a concentration of 5.0 μM.
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Affiliation(s)
- Yi Zang
- Key Laboratory of Agricultural Microbiomics and Precision Application-Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Center, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Beiping Zhou
- Key Laboratory of Agricultural Microbiomics and Precision Application-Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Center, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Mengsha Wei
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhengyi Shi
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Guangda Feng
- Key Laboratory of Agricultural Microbiomics and Precision Application-Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Center, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Mingrong Deng
- Key Laboratory of Agricultural Microbiomics and Precision Application-Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Center, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Honghui Zhu
- Key Laboratory of Agricultural Microbiomics and Precision Application-Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Center, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China.
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11
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Yang SS, Chen YF, Ko HH, Wu HC, Hsieh SY, Wu MD, Cheng MJ, Chang HS. Undescribed alkyne-geranylcyclohexenetriols from the endophyte Diaporthe caulivora 09F0132 and their anti-melanogenic activity. PHYTOCHEMISTRY 2022; 202:113312. [PMID: 35830940 DOI: 10.1016/j.phytochem.2022.113312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
To explore valuable endophytic fungus from Formosan Lauraceous plants as natural medicinal products, the fungus, Diaporthe caulivora isolated from leaves of Neolitsea daibuensis, was investigated. Through a thorough investigation of the ethanolic extract of the solid fermentation of D. caulivora 09F0132, six undescribed alkyne-geranylcyclohexenetriols, caulivotrioloxins A-F, one undescribed trichopyrone, diapopyrone, two undescribed sesquiterpenes, caulibysins A-B, one compound firstly isolated from the natural source, 3-O-desmethyl phomentrioloxin, and eight known compounds have been successfully identified. The absolute configuration of caulibysin A was confirmed by single-crystal X-ray diffraction, and those of (3R,8S)-5,7-dihydroxy-3-(1-hydroxyethyl)phthalide and (3S,8S)-5,7-dihydroxy-3-(1-hydroxyethyl)phthalide were determined by circular dichroism (CD) spectra. Among the isolated compounds, caulivotrioloxin A concentration-dependently decreased the cellular melanin contents and tyrosinase activities in mouse melanoma B16-F10 cells, suggesting the anti-melanogenic potentials. The anti-melanogenic effects of caulivotrioloxin A involved the decrease in the protein expressions of melanogenic enzymes, including tyrosinase, tyrosinase-related protein (TRP)-1, and TRP-2. Taken together, these results suggested that the isolates from D. caulivora could be served as natural melanogenesis inhibitors for cosmeceutical applications.
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Affiliation(s)
- Shuen-Shin Yang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Yih-Fung Chen
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan; Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Horng-Huey Ko
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan; Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Ho-Cheng Wu
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei, 110, Taiwan
| | - Sung-Yuan Hsieh
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, 300, Taiwan
| | - Ming-Der Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, 300, Taiwan
| | - Ming-Jen Cheng
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, 300, Taiwan.
| | - Hsun-Shuo Chang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan; Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
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12
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Bansal R, Sethy SK, Khan Z, Shaikh N, Banerjee K, Mukherjee PK. Genetic Evidence in Favor of a Polyketide Origin of Acremeremophilanes, the Fungal "Sesquiterpene" Metabolites. Microbiol Spectr 2022; 10:e0179322. [PMID: 35938791 PMCID: PMC9430172 DOI: 10.1128/spectrum.01793-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/18/2022] [Indexed: 12/02/2022] Open
Abstract
Eremophilanes are a large group of "sesquiterpenes" produced by plants and fungi, with more than 180 compounds being known in fungi alone. Many of these compounds are phytotoxic, antimicrobial, anticancer and immunomodulators, and hence are of great economic values. Acremeremophilanes A to O have earlier been reported in a marine isolate of Acremonium sp. We report here the presence of Acremeremophilane I, G, K, N, and O, in a plant beneficial fungus Trichoderma virens, in a strain-specific manner. We also describe a novel, P strain-specific polyketide synthase (PKS) gene cluster in T. virens. This gene cluster, designated amm cluster, is absent in the genome of a Q strain of T. virens, and in other Trichoderma spp.; instead, a near identical cluster is present in the genome of the toxic mold Stachybotrys chartarum. Using gene knockout, we provide evidence that acremeremophilanes are biosynthesized via a polyketide route, and not via the mevalonate/terpene synthesis route as believed. We propose here that the 10-carbon skeleton is a product of polyketide synthase, to which a five-carbon isoprene unit is added by a prenyl transferase (PT), a gene for which is present next to the PKS gene in the genome. Based on this evidence, we propose that at least some of the eremophilanes classified in literature as sesquiterpenes (catalyzed by terpene cyclase) are actually meroterpenes (catalyzed by PKSs and PTs), and that the core moiety is not a sesquiterpene, but a hybrid polyketide/isoprene unit. IMPORTANCE The article contradicts the established fact that acremeremophilane metabolites produced by fungi are sesquiterpenes; instead, our findings suggest that at least some of these well-studied metabolites are of polyketide origin. Acremeremophilane metabolites are of medicinal significance, and the present findings have implications for the metabolic engineering of these metabolites and also their overproduction in microbial cell factories.
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Affiliation(s)
- Ravindra Bansal
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
| | - Sunil Kumar Sethy
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
| | - Zareen Khan
- National Referral Laboratory, ICAR–National Research Centre for Grapes, Pune, Maharashtra, India
| | - Nasiruddin Shaikh
- National Referral Laboratory, ICAR–National Research Centre for Grapes, Pune, Maharashtra, India
| | - Kaushik Banerjee
- National Referral Laboratory, ICAR–National Research Centre for Grapes, Pune, Maharashtra, India
| | - Prasun K. Mukherjee
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
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13
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Ai HL, Lv X, Ye K, Wang MX, Huang R, Shi BB, Li ZH. Four New Highly Oxygenated Eremophilane Sesquiterpenes from an Endophytic Fungus Boeremia exigua Isolated from Fritillaria hupehensis. J Fungi (Basel) 2022; 8:jof8050492. [PMID: 35628748 PMCID: PMC9146970 DOI: 10.3390/jof8050492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/03/2022] [Accepted: 05/05/2022] [Indexed: 11/16/2022] Open
Abstract
Four new eremophilane-type sesquiterpenes, boeremialanes A–D (1–4) were obtained from solid substrate cultures of Boeremia exigua (Didymellaceae), an endophytic fungus isolated from Fritillaria hupehensis (Liliaceae). Boeremialanes A–C (1–3) are highly oxygenated eremophilanes with a benzoate unit attached at the C-13 position and are rarely found in nature. Their structures and absolute configurations were determined by extensive spectroscopic methods, electronic circular dichroism (ECD), and nuclear magnetic resonance (NMR) calculations with DP4+ analysis. Boeremialane D (4) potently inhibited nitric oxide production in lipopolysaccharide-treated RAW264.7 macrophages with an IC50 of 8.62 μM and was more potent than the positive control, pyrrolidinedithiocarbamate (IC50 = 23.1 μM).
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14
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Li-Bin L, Xiao J, Zhang Q, Han R, Xu B, Yang SX, Han WB, Tang JJ, Gao JM. Eremophilane Sesquiterpenoids with Antibacterial and Anti-inflammatory Activities from the Endophytic Fungus Septoria rudbeckiae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11878-11889. [PMID: 34605647 DOI: 10.1021/acs.jafc.1c04131] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fourteen eremophilane sesquiterpenoids (1-14), including nine new congeners, septoreremophilanes A-I (1-9), together with three known sesquiterpenes (15-17), two known tetralone derivatives (18, 19), and two known cholesterol analogues (20, 21), were isolated from the endophytic fungus Septoria rudbeckiae. Compounds 1-6 and 7a belong to the family of the highly oxygenated eremophilane sesquiterpenoids with a 6/6/5 tricyclic system and bearing a hemiacetal moiety. The inhibitions of all metabolites against eight bacteria were estimated in vitro, and nine new metabolites (1-9) were tested for antineuroinflammatory activity. Notably, the effects of 4 against Pseudomonas syringae pv. actinidae and 20 against Bacillus cereus displayed potent inhibitory, with the MIC values of 6.25 and 6.25 μM, respectively. Further, scanning electron microscopy analyses indicated that 4 and 20 were to change the outer configuration of bacterial cells, respectively, and the investigations demonstrated that 4 and 20 may act as potential structure templates for the development of the agrochemical bactericides. Additionally, compound 6 displayed potent inhibition of NO generation in lipopolysaccharide-induced BV-2 microglial cells (IC50 = 12.0 ± 0.32 μM), and the conceivable anti-inflammatory mechanisms implicated were also investigated by molecular docking. Thus, the bioactive metabolites of the strain S. rudbeckiae may serve as a novel resource to be developed.
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Affiliation(s)
- Lin Li-Bin
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
| | - Jian Xiao
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, People's Republic of China
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
| | - Rui Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
| | - Biao Xu
- College of Life Sciences, Tarim University, Aral 843300, People's Republic of China
| | - Sheng-Xiang Yang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Wen-Bo Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
| | - Jiang-Jiang Tang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
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15
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Zhou M, Duan F, Gao Y, Peng X, Meng X, Ruan H. Eremophilane sesquiterpenoids from the whole plant of Parasenecio albus with immunosuppressive activity. Bioorg Chem 2021; 115:105247. [PMID: 34411979 DOI: 10.1016/j.bioorg.2021.105247] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/21/2021] [Accepted: 08/03/2021] [Indexed: 11/27/2022]
Abstract
Fifteen new highly oxygenated eremophilane sesquiterpenoids, parasubolides A-O (1-15), were obtained from the whole plant of Parasenecio albus. The structures of 1-15 were elucidated based on the interpretation of NMR and HRESIMS data, along with experimental electronic circular dichroism (ECD) and single-crystal X-ray diffraction analysis. Compounds 1-6, and 9-14 represent the first class of 1,2,10-trioxygenated eremophilane lactones. Selected isolates were evaluated for their immunosuppressive activities. Compounds 4, 5, and 12 exhibited moderate inhibition against LPS-induced B-cell proliferation with IC50 values of 23.1, 33.8, and 26.6 μM, respectively.
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Affiliation(s)
- Ming Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China; Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, People's Republic of China
| | - Fangfang Duan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Ying Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xiaogang Peng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xianggao Meng
- College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
| | - Hanli Ruan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China.
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16
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The Effect of Ferula communis Extract in Escherichia coli Lipopolysaccharide-Induced Neuroinflammation in Cultured Neurons and Oligodendrocytes. Int J Mol Sci 2021; 22:ijms22157910. [PMID: 34360675 PMCID: PMC8347728 DOI: 10.3390/ijms22157910] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 01/24/2023] Open
Abstract
In recent decades, interest in natural compounds has increased exponentially due to their numerous beneficial properties in the treatment of various acute and chronic diseases. A group of plant derivatives with great scientific interest is terpenic compounds. Among the plants richest in terpenes, the genus Ferula L. is one of the most representative, and ferutinin, the most common sesquiterpene, is extracted from the leaves, rhizome, and roots of this plant. As reported in the scientific literature, ferutinin possesses antioxidant and anti-inflammatory properties, as well as valuable estrogenic properties. Neurodegenerative and demyelinating diseases are devastating conditions for which a definite cure has not yet been established. The mechanisms involved in these diseases are still poorly understood, and oxidative stress is considered to be both a key modulator and a common denominator. In the proposed experimental system, co-cultured human neurons (SH-SY5Y) and human oligodendrocytes (MO3.13) were treated with the pro-inflammatory agent lipopolysaccharide at a concentration of 1 μg/mL for 24 h or pretreated with ferutinin (33 nM) for 24 h and subsequently exposed to lipopolysaccharide 1 μg/mL for 24 h. Further studies would, however, be needed to establish whether this natural compound can be used as a support strategy in pathologies characterized by progressive inflammation and oxidative stress phenomena.
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17
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Abstract
Herein, we describe a DBU/O2-promoted novel method for oxidation of dienones to 2,6-dione derivatives. The reaction involves treatment of a dienone with DBU in acetonitrile employing molecular oxygen as the oxidant. Metal free conditions and an eco-friendly reagent are the striking features of this protocol. This transformation proceeds through a peroxide intermediate that upon Kornblum-DeLaMare rearrangement produces 2,6-diones. The method was successfully utilized for the synthesis of (±)-pleodendione with improved yields versus those of the traditional PDC-TBHP method.
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Affiliation(s)
- Paresh R Athawale
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Hanuman P Kalmode
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - D Srinivasa Reddy
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,CSIR-Indian Institute of Integrated Medicine, Canal Road, Jammu 180001, India
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18
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Wang A, Yin R, Zhou Z, Gu G, Dai J, Lai D, Zhou L. Eremophilane-Type Sesquiterpenoids From the Endophytic Fungus Rhizopycnis vagum and Their Antibacterial, Cytotoxic, and Phytotoxic Activities. Front Chem 2020; 8:596889. [PMID: 33195106 PMCID: PMC7649393 DOI: 10.3389/fchem.2020.596889] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 09/23/2020] [Indexed: 11/13/2022] Open
Abstract
Fourteen new eremophilane-type sesquiterpenoids, named rhizoperemophilanes A~N (1~14), together with eight known congeners, were isolated from the culture of the endophytic fungus Rhizopycnis vagum. The structures of the new compounds were elucidated by extensive spectroscopic analyses, as well as ECD calculations and the modified Mosher's method for the assignment of the absolute configurations. Rhizoperemophilane J (10) contains an uncommon C-4/C-11 epoxy ring, while rhizoperemophilane N (14) features an unprecedented 3-nor-eremophilane lactone-lactam skeleton. These metabolites were evaluated for their antibacterial, cytotoxic, and phytotoxic activities. Among them, compounds 11, 16, and 20 displayed antibacterial activities, while 14 showed selective cytotoxicity against NCI-H1650 and BGC823 tumor cells. Moreover, compounds 5, 6, 12, 13, 16, and 19 exhibited strong phytotoxic activities against the radicle elongation of rice seedlings.
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Affiliation(s)
- Ali Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Ruya Yin
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhiyao Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Gan Gu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jungui Dai
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science, Peking Union Medical College, Beijing, China
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
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19
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Marine Terpenoids from Polar Latitudes and Their Potential Applications in Biotechnology. Mar Drugs 2020; 18:md18080401. [PMID: 32751369 PMCID: PMC7459527 DOI: 10.3390/md18080401] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 01/03/2023] Open
Abstract
Polar marine biota have adapted to thrive under one of the ocean’s most inhospitable scenarios, where extremes of temperature, light photoperiod and ice disturbance, along with ecological interactions, have selected species with a unique suite of secondary metabolites. Organisms of Arctic and Antarctic oceans are prolific sources of natural products, exhibiting wide structural diversity and remarkable bioactivities for human applications. Chemical skeletons belonging to terpene families are the most commonly found compounds, whereas cytotoxic antimicrobial properties, the capacity to prevent infections, are the most widely reported activities from these environments. This review firstly summarizes the regulations on access and benefit sharing requirements for research in polar environments. Then it provides an overview of the natural product arsenal from Antarctic and Arctic marine organisms that displays promising uses for fighting human disease. Microbes, such as bacteria and fungi, and macroorganisms, such as sponges, macroalgae, ascidians, corals, bryozoans, echinoderms and mollusks, are the main focus of this review. The biological origin, the structure of terpenes and terpenoids, derivatives and their biotechnological potential are described. This survey aims to highlight the chemical diversity of marine polar life and the versatility of this group of biomolecules, in an effort to encourage further research in drug discovery.
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20
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Nakashima KI, Tomida J, Hirai T, Kawamura Y, Inoue M. Paraconiothins A-J: Sesquiterpenoids from the Endophytic Fungus Paraconiothyrium brasiliense ECN258. JOURNAL OF NATURAL PRODUCTS 2019; 82:3347-3356. [PMID: 31815465 DOI: 10.1021/acs.jnatprod.9b00638] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Paraconiothins A-J (1-10), 10 new sesquiterpenoids, as well as five known sesquiterpenoids, were isolated from the cultures of the endophytic fungus Paraconiothyrium brasiliense ECN-258. The structures of the sesquiterpenoids were elucidated by extensive spectroscopic analysis. Furthermore, the absolute structures of 7 and 8 were determined by comparing their experimental and computed electronic circular dichroism data. Paraconiothins A-G (1-7) were eremophilane sesquiterpenoids, while paraconiothins H-J (8-10) had new or rare carbon frameworks that are possibly biosynthesized by a pathway involving the rearrangement of eremophilane sesquiterpenoids. Paraconiothins C (3) and I (9) exhibited an inhibitory effect on the liver X receptor α at a concentration of 50 μM.
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Affiliation(s)
- Ken-Ichi Nakashima
- Laboratory of Medicinal Resources, School of Pharmacy , Aichi Gakuin University , 1-100 Kusumoto-cho, Chikusa-ku, Nagoya , Aichi 464-8650 , Japan
| | - Junko Tomida
- Department of Microbiology, School of Pharmacy , Aichi Gakuin University , 1-100 Kusumoto-cho, Chikusa-ku, Nagoya , Aichi 464-8650 , Japan
| | - Takao Hirai
- Laboratory of Medicinal Resources, School of Pharmacy , Aichi Gakuin University , 1-100 Kusumoto-cho, Chikusa-ku, Nagoya , Aichi 464-8650 , Japan
| | - Yoshiaki Kawamura
- Department of Microbiology, School of Pharmacy , Aichi Gakuin University , 1-100 Kusumoto-cho, Chikusa-ku, Nagoya , Aichi 464-8650 , Japan
| | - Makoto Inoue
- Laboratory of Medicinal Resources, School of Pharmacy , Aichi Gakuin University , 1-100 Kusumoto-cho, Chikusa-ku, Nagoya , Aichi 464-8650 , Japan
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21
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Lardon N, Liffert R, Linden A, Gademann K. The Furan Shuffling Hypothesis: A Biogenetic Proposal for Eremophilane Sesquiterpenoids. Angew Chem Int Ed Engl 2019; 58:7004-7007. [PMID: 30901154 DOI: 10.1002/anie.201901898] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Indexed: 12/12/2022]
Abstract
Based on the structural similarities of the recently isolated eremophilane-type sesquiterpenoids microsphaeropsisin B and C and the iso-eremophilane periconianone C, a revised biogenetic hypothesis for C8-C11-connected iso-eremophilanes is presented and corroborated by strong experimental evidence. The first enantioselective total syntheses of microsphaeropsisin B and C were achieved starting from a known intermediate, whose synthesis was elaborated previously in the total synthesis of periconianone A, and in a total of 15 steps starting from γ-hydroxy carvone. Mild reaction conditions for the subsequent α-ketol rearrangement not only resulted in the herein proposed conversion of microsphaeropsisin B into periconianone C, but also in the conversion of microsphaeropsisin C into 4-epi-periconianone C.
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Affiliation(s)
- Nicolas Lardon
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Raphael Liffert
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Anthony Linden
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
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22
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Lardon N, Liffert R, Linden A, Gademann K. The Furan Shuffling Hypothesis: A Biogenetic Proposal for Eremophilane Sesquiterpenoids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nicolas Lardon
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Raphael Liffert
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Anthony Linden
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Karl Gademann
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
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23
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Niu S, Liu D, Shao Z, Proksch P, Lin W. Eremophilane-type sesquiterpenoids in a deep-sea fungus Eutypella sp. activated by chemical epigenetic manipulation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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24
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Chemical Composition and Antibacterial Activity of Essential Oils from Ferula L. Species against Methicillin-Resistant Staphylococcus aureus. Molecules 2018; 23:molecules23071679. [PMID: 29996498 PMCID: PMC6099696 DOI: 10.3390/molecules23071679] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/02/2018] [Accepted: 07/08/2018] [Indexed: 01/08/2023] Open
Abstract
Essential oils (EOs) were obtained by hydrodistillation of various parts of Ferula ovina (Boiss.) Boiss., Ferula iliensis Krasn. ex. Korovin, and Ferula akitschkensis B. Fedtsch. ex Koso-Pol., collected in the flowering/budding and fruiting stages. Eight samples of EOs isolated from F. ovina and four samples from F. akitsckensis were analyzed by gas chromatography⁻mass spectrometry (GC-MS). The major constituents of F. ovina EOs were α-pinene (6.9⁻47.8%), β-pinene (1.5⁻7.1%), sabinene (0.1⁻20.5%), β-phellandrene (0⁻6.5%), trans-verbenol (0.9⁻7.4%), eremophilene (3.1⁻12%), and 6Z-2,5,5,10-tetramethyl-undeca-2,6,9-trien-8-one (0⁻13.7%). The major constituents of F. akitsckensis EOs were α-pinene (0⁻46.2%), β-pinene (0⁻47.9%), sabinene (0⁻28.3%), eremophilene (0⁻10.6), β-caryophyllene (0⁻7.5%), himachalen-7-ol (0⁻28.2%), and an himachalol derivative (0⁻8.3%). Samples of EOs from F. ovina, F. iliensis, and F. akitsckensis were evaluated for antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) pulse-field gel electrophoresis type USA300 (LAC). EOs from F. ovina exhibited the highest antibacterial activity compared to samples from other Ferula spp., with the most potent EOs being isolated from roots at the flowering and fruiting stages and stems at the fruiting stage (IC50 values of 19.1, 20.9, and 22.9 µg/mL, respectively). Although EOs demonstrated concentration-dependent inhibition of MRSA growth, analysis of the major constituents (α-pinene, β-pinene, and sabinene) showed that they had low activity, suggesting that other components were likely responsible for the observed bioactivity of the unfractionated EOs. Indeed, correlation of the GC-MS data with antibacterial activity suggested that the putative components responsible for antibacterial activity were, either individually or in combination, eremophilene and trans-verbenol. Overall, these results suggest that the EOs from F. ovina could have potential for use as alternative remedies for the treatment of infectious diseases caused by MRSA.
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Feceu A, Sangster LE, Martin DBC. Unexpected Alkene Isomerization during Iterative Cross-Coupling To Form Hindered, Electron-Deficient Trienes. Org Lett 2018; 20:3151-3155. [PMID: 29781280 DOI: 10.1021/acs.orglett.8b00809] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An iterative cross-coupling approach to conjugated trienes was explored as part of a planned stereoselective synthesis of bicyclic terpenes. Using a bifunctional bromoboronate building block, sequential Suzuki coupling reactions were employed to provide a conjugated trienone target containing a tetrasubstituted alkene. During the final cross-coupling step, an unexpected alkene isomerization was observed to give less hindered trans products. Examination of different substrates determined that conjugation to a ketone withdrawing group was responsible for isomerization, rather than steric hindrance of the tetrasubstituted alkene.
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Affiliation(s)
- Abigail Feceu
- Department of Chemistry , University of California , Riverside , California 92521 , United States
| | - Lauren E Sangster
- Department of Chemistry , University of California , Riverside , California 92521 , United States
| | - David B C Martin
- Department of Chemistry , University of California , Riverside , California 92521 , United States
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Ilazi A, Liffert R, Gademann K. Total Synthesis of the Polyoxygenated Sesquiterpenes Guignarderemophilanes C and D. Helv Chim Acta 2018. [DOI: 10.1002/hlca.201800011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Agron Ilazi
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Raphael Liffert
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Karl Gademann
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
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