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Saltiel J, Krishnan SB, Gupta S, Chakraborty A, Hilinski EF, Lin X. Photochemistry and Photophysics of Cholesta-5,7,9(11)-trien-3β-ol in Ethanol. Molecules 2023; 28:molecules28104086. [PMID: 37241827 DOI: 10.3390/molecules28104086] [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: 04/21/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Cholesta-5,7,9(11)-trien-3β-ol (9,11-dehydroprovitamin D3, CTL) is used as a fluorescent probe to track the presence and migration of cholesterol in vivo. We recently described the photochemistry and photophysics of CTL in degassed and air-saturated tetrahydrofuran (THF) solution, an aprotic solvent. The zwitterionic nature of the singlet excited state, 1CTL* is revealed in ethanol, a protic solvent. In ethanol, the products observed in THF are accompanied by ether photoadducts and by photoreduction of the triene moiety to four dienes, including provitamin D3. The major diene retains the conjugated s-trans-diene chromophore and the minor is unconjugated, involving 1,4-addition of H at the 7 and 11 positions. In the presence of air, peroxide formation is a major reaction channel as in THF. X-ray crystallography confirmed the identification of two of the new diene products as well as of a peroxide rearrangement product.
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Affiliation(s)
- Jack Saltiel
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Sumesh B Krishnan
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Shipra Gupta
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Anjan Chakraborty
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Edwin F Hilinski
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Xinsong Lin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
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2
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Wang K, Nsanzamahoro S, Li PL, Chai T, Wang CB, Sang CY, Wang J, Yang JL. Chemical constituents from Lagopsis supina and their chemotaxonomic significance. BIOCHEM SYST ECOL 2023. [DOI: 10.1016/j.bse.2022.104572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Dembitsky VM. In Silico Prediction of Steroids and Triterpenoids as Potential Regulators of Lipid Metabolism. Mar Drugs 2021; 19:650. [PMID: 34822521 PMCID: PMC8618826 DOI: 10.3390/md19110650] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/12/2021] [Accepted: 11/19/2021] [Indexed: 12/12/2022] Open
Abstract
This review focuses on a rare group of steroids and triterpenoids that share common properties as regulators of lipid metabolism. This group of compounds is divided by the type of chemical structure, and they represent: aromatic steroids, steroid phosphate esters, highly oxygenated steroids such as steroid endoperoxides and hydroperoxides, α,β-epoxy steroids, and secosteroids. In addition, subgroups of carbon-bridged steroids, neo steroids, miscellaneous steroids, as well as synthetic steroids containing heteroatoms S (epithio steroids), Se (selena steroids), Te (tellura steroids), and At (astatosteroids) were presented. Natural steroids and triterpenoids have been found and identified from various sources such as marine sponges, soft corals, starfish, and other marine invertebrates. In addition, this group of rare lipids is found in fungi, fungal endophytes, and plants. The pharmacological profile of the presented steroids and triterpenoids was determined using the well-known computer program PASS, which is currently available online for all interested scientists and pharmacologists and is currently used by research teams from more than 130 countries of the world. Our attention has been focused on the biological activities of steroids and triterpenoids associated with the regulation of cholesterol metabolism and related processes such as anti-hyperlipoproteinemic activity, as well as the treatment of atherosclerosis, lipoprotein disorders, or inhibitors of cholesterol synthesis. In addition, individual steroids and triterpenoids were identified that demonstrated rare or unique biological activities such as treating neurodegenerative diseases, Alzheimer's, and Parkinson's diseases with a high degree of certainty over 95 percent. For individual steroids or triterpenoids or a group of compounds, 3D drawings of their predicted biological activities are presented.
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Affiliation(s)
- Valery M Dembitsky
- Centre for Applied Research, Innovation and Entrepreneurship, Lethbridge College, 3000 College Drive South, Lethbridge, AB T1K 1L6, Canada
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4
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A versatile heterogeneous photocatalyst: nanoporous gold powder modified with a zinc(II) phthalocyanine derivative for singlet oxygen [4 + 2] cycloadditions. Photochem Photobiol Sci 2021; 20:547-558. [PMID: 33876418 DOI: 10.1007/s43630-021-00037-7] [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: 02/03/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
Nanoporous gold was functionalized with a photosensitizer, a zinc(II) phthalocyanine derivative. Such systems are active for the generation of reactive singlet oxygen which can be used for photocatalytic oxidation reactions. This study aims to demonstrate the versatility of such an approach, in terms of substrates and the employed solvent, only possible for a truly heterogeneous catalytic system. The activity of the hybrid system was studied for [4 + 2] cycloadditions of three different types of dienes and a total of eight substrates in two organic solvents and once in water. The highest activity was measured for 1,3-diphenylisobenzofuran, which is also highest in terms of sensitivity for the reaction with 1O2. Trends in conversion could be anticipated based on reported values for the rate constant for the reaction of 1O2. In almost all cases, an amplification of the conversion by immobilization of the sensitizer onto nanoporous gold was observed. The limiting case was ergosterol, which was the largest of all substrates with a van-der-Waals radius of about 2.1 nm. Additional factors such as the limited lifetime of 1O2 in different solvents as well as the hampered diffusion of the substrates were identified.
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5
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Ho YN, Hoo SY, Wang BW, Hsieh CT, Lin CC, Sun CH, Peng CC, Lin C, Yang YL. Specific inactivation of an antifungal bacterial siderophore by a fungal plant pathogen. ISME JOURNAL 2021; 15:1858-1861. [PMID: 33619352 DOI: 10.1038/s41396-020-00871-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 11/24/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023]
Abstract
Bacteria and fungi secrete many natural products that inhibit each other's growth and development. The dynamic changes in secreted metabolites that occur during interactions between bacteria and fungi are complicated. Pyochelin is a siderophore produced by many Pseudomonas and Burkholderia species that induces systemic resistance in plants and has been identified as an antifungal agent. Through imaging mass spectrometry and metabolomics analysis, we found that Phellinus noxius, a plant pathogen, can modify pyochelin and ent-pyochelin to an esterification product, resulting in reduced iron-chelation and loss of antifungal activity. We also observed that dehydroergosterol peroxide, the fungal metabolite, is only accumulated in the presence of pyochelin produced through bacteria-fungi interactions. For the first time, we show the fungal transformation of pyochelin in the microbial interaction. Our findings highlight the importance of understanding the dynamic changes of metabolites in microbial interactions and their influences on microbial communities.
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Affiliation(s)
- Ying-Ning Ho
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan.,Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung, 20224, Taiwan
| | - Sin Yong Hoo
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Bo-Wei Wang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan.,Doctor Degree Program in Marine Biotechnology, National Sun Yat-sen University/Academia Sinica, Kaohsiung, 80424, Taiwan
| | - Chi-Ting Hsieh
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Ching-Chih Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chi-Hui Sun
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chia-Chi Peng
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chih Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan.
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Ory L, Gentil E, Kumla D, Kijjoa A, Nazih EH, Roullier C. Detection of ergosterol using liquid chromatography/electrospray ionization mass spectrometry: Investigation of unusual in-source reactions. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8780. [PMID: 32154942 DOI: 10.1002/rcm.8780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/18/2020] [Accepted: 03/08/2020] [Indexed: 06/10/2023]
Abstract
RATIONALE In the field of natural products, de-replication of complex mixtures has become a usual practice to annotate known compounds and avoid their re-isolation. For this purpose, many groups rely on liquid chromatography coupled to high-resolution mass spectrometry (HPLC/MS) to deduce molecular formulae of compounds allowing comparison with public or in-house databases. Electrospray ionization (ESI) is usually considered as the method of choice for investigating a large panel of compounds but, in some cases, it may lead to unusual results as described in this article for ergosterol. METHODS Ergosterol and other fungal sterols in methanolic solution were analysed using various chromatographic gradients with HPLC/MS using both ion trap time-of-flight MS and Orbitrap MS instruments fitted with an ESI source. Further flow injection analyses were performed to investigate the influence of the solvent composition. MS/MS fragmentation data were acquired to annotate the various ions observed. RESULTS Contrary to other fungal sterols, ergosterol was found to be highly sensitive to oxidation during ESI. Putative structures were proposed based on MS/MS studies and known oxidation mechanisms of ergosterol by reactive oxygen species that could be formed in the ESI process. The proportion of acetonitrile in the eluent was found to influence this in-source oxidation, with an increased proportion of oxidized sodium adducts with higher proportions of acetonitrile. CONCLUSIONS While ergosterol is a major sterol found in fungi, this study investigates its ionization by electrospray for the first time. The results reported here will help further detection and annotation of this compound in fungal extracts after HPLC/ESI-MS analyses.
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Affiliation(s)
- Lucie Ory
- EA2160 - MMS, Nantes University, 9 rue Bias, Nantes, 44035, France
| | - Emmanuel Gentil
- EA2160 - MMS, Nantes University, 9 rue Bias, Nantes, 44035, France
- Corsaire - ThalassOMICS, Biogenouest, Université de Nantes, Nantes, 44000, France
| | - Decha Kumla
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar and CIIMAR, Universidade do Porto, Porto, 4050-313, Portugal
| | - Anake Kijjoa
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar and CIIMAR, Universidade do Porto, Porto, 4050-313, Portugal
| | - El-Hassane Nazih
- EA2160 - MMS, Nantes University, 9 rue Bias, Nantes, 44035, France
| | - Catherine Roullier
- EA2160 - MMS, Nantes University, 9 rue Bias, Nantes, 44035, France
- Corsaire - ThalassOMICS, Biogenouest, Université de Nantes, Nantes, 44000, France
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7
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Cytotoxicity of lanostane-type triterpenoids and ergosteroids isolated from Omphalia lapidescens on MDA-MB-231 and HGC-27 cells. Biomed Pharmacother 2019; 118:109273. [DOI: 10.1016/j.biopha.2019.109273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/30/2022] Open
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8
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Vil VA, Terent'ev AO, Savidov N, Gloriozova TA, Poroikov VV, Pounina TA, Dembitsky VM. Hydroperoxy steroids and triterpenoids derived from plant and fungi: Origin, structures and biological activities. J Steroid Biochem Mol Biol 2019; 190:76-87. [PMID: 30923015 DOI: 10.1016/j.jsbmb.2019.03.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/18/2019] [Accepted: 03/23/2019] [Indexed: 01/10/2023]
Abstract
Hydroperoxides (R-OOH) represent a small family of natural metabolites that have been isolated from higher plants, fungi, and marine organisms. This paper is devoted to the distribution of hydroperoxides in plants, fungi and terrestrial fungal endophytes and their biological activity. Hydroperoxides of plants demonstrate a wide range of biological activities however, antineoplastic and anti-ulcerative are most characteristic with confidence from 91 to 98 percent. For hydroperoxides from fungi, the dominant are antineoplastic and anti-hypercholesterolemic activities with confidence from 89 to 92 percent. Very interesting activity was found for some triterpenoid hydroperoxides, which is characterized as a treatment for the symptoms of dementia. The norlupane hydroperoxide shows activity for the treatment of dementia. It is interesting that the reliability of this activity was very high 97.2%. According to our preliminary data, the norlupane hydroperoxide is apparently the first natural metabolite that showed almost 100 percent activity for the treatment of dementia. However, to confirm these data requires practical and clinical experimental work.
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Affiliation(s)
- Vera A Vil
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991, Moscow, Russia
| | - Alexander O Terent'ev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991, Moscow, Russia
| | - Nick Savidov
- Centre for Applied Research and Innovation, Lethbridge College, 3000 College Drive South Lethbridge, AB, T1K 1L6, Canada
| | | | | | - Tatyana A Pounina
- Far Eastern Geological Institute, Russian Academy of Sciences, 159 Prospect 100-letiya Vladivostoka, Vladivostok, 690022, Russia
| | - Valery M Dembitsky
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991, Moscow, Russia; Centre for Applied Research and Innovation, Lethbridge College, 3000 College Drive South Lethbridge, AB, T1K 1L6, Canada; National Scientific Center of Marine Biology, 690041, Vladivostok, Russia.
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9
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Bu M, Cao T, Li H, Guo M, Yang BB, Zeng C, Hu L. Synthesis of 5α,8α-Ergosterol Peroxide 3-Carbamate Derivatives and a Fluorescent Mitochondria-Targeting Conjugate for Enhanced Anticancer Activities. ChemMedChem 2017; 12:466-474. [PMID: 28198103 DOI: 10.1002/cmdc.201700021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/16/2017] [Indexed: 01/06/2023]
Abstract
Inspired by the significant anticancer activity of our previously screened natural ergosterol peroxide (1), we synthesized and characterized a series of novel ergosterol peroxide 3-carbamate derivatives. The antiproliferative activities of the synthesized compounds against human hepatocellular carcinoma cells (HepG2, SK-Hep1) and human breast cancer cells (MCF-7, MDA-MB231) were investigated. 5α,8α-Epidioxyergosta-3-yl-(piperazine-1)carbamate (3 d) and 5α,8α-epidioxyergosta-3-yl-(piperidin-4-methylamine)carbamate (3 f) and their hydrochloride salts exhibited significant in vitro antiproliferative activities against the tested tumor cell lines, with IC50 values ranging from 0.85 to 4.62 μm. Furthermore, fluorescent imaging showed that the designed coumarin-3 d conjugate (5) localized mainly in mitochondria, leading to enhanced anticancer activities over the parent structure 1. As a whole, it appeared that substituent changes at the C3 position could serve as a promising launch point for further design of this type of steroidal anticancer agent.
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Affiliation(s)
- Ming Bu
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Tingting Cao
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Hongxia Li
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Mingzhou Guo
- Chinese PLA General Hospital, Beijing, 100853, China
| | - Burton B Yang
- Institute of Medical Science, University of Toronto, Toronto, ON, M4N 3M5, Canada
| | - Chengchu Zeng
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Liming Hu
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China.,Beijing Key Laboratory of Environmental and Viral Oncology, Beijing University of Technology, Beijing, 100124, China
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10
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Hu L, Bu M, Cao T, Li H, Guo M, Zhou Y, Zhang N, Zeng C, Wang Y. Synthesis and Antitumor Activities of Steroidal 5α,8α-Endoperoxide Derivatives with Side Chain of 17-Hydrazone Aromatic Heterocycle. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Howard JK, Rihak KJ, Hyland CJT, Bissember AC, Smith JA. Visible light dye-photosensitised oxidation of pyrroles using a simple LED photoreactor. Org Biomol Chem 2016; 14:8873-8880. [PMID: 27722413 DOI: 10.1039/c6ob01719c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photooxidation of pyrrole is typically low yielding due to the absorbance of ultraviolet light, which leads to uncontrolled polymerisation and decomposition. Presented herein is the development of a simple and cost-effective photoreactor utilising Light Emitting Diodes (LEDs) as the light source, and its application to the dye-sensitised oxidation of a range of pyrroles to give corresponding 3-pyrrolin-2-ones. The broader applicability of this approach to the generation of 1O2 is also explored.
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Affiliation(s)
- James K Howard
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | - Kieran J Rihak
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | | | - Alex C Bissember
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | - Jason A Smith
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
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12
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Song L, Wang XF, Wu Y, He WY, Yao CS, Shi JG. Chemical constituents from the linseed meal. Fitoterapia 2014; 97:15-22. [DOI: 10.1016/j.fitote.2014.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 05/13/2014] [Accepted: 05/16/2014] [Indexed: 11/28/2022]
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13
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Peng F, Xiong L, Zhao XM. A bicyclic diterpenoid with a new 15,16-dinorlabdane carbon skeleton from Leonurus japonicus and its coagulant bioactivity. Molecules 2013; 18:13904-9. [PMID: 24284488 PMCID: PMC6270439 DOI: 10.3390/molecules181113904] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 10/29/2013] [Accepted: 11/05/2013] [Indexed: 12/04/2022] Open
Abstract
A new 15,16-dinorlabdane diterpenoid 1 and a known labdane diterpenoid 2, together with three known ergosterols 3–5, were isolated from the EtOAc-soluble portion of the EtOH extract of Leonurus japonicus. Their structures were elucidated by physical and spectroscopic analysis. Compound 1 showed in vitro coagulant activity in the APTT, PT, TT, and FIB assays.
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Affiliation(s)
- Fu Peng
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Sichuan Province and Ministry of Science and Technology, Chengdu 610075, China; E-Mail:
- School of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Liang Xiong
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Sichuan Province and Ministry of Science and Technology, Chengdu 610075, China; E-Mail:
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-28-6213-5056
| | - Xiao-Mei Zhao
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China; E-Mail:
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Wang S, Zhang L, Liu LY, Dong ZJ, Li ZH, Liu JK. Six novel steroids from culture of basidiomycete Polyporus ellisii. NATURAL PRODUCTS AND BIOPROSPECTING 2012; 2:240-244. [PMCID: PMC4131608 DOI: 10.1007/s13659-012-0058-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 10/08/2012] [Indexed: 06/03/2023]
Abstract
Investigation of the culture of basidiomycete Polyporus ellisii led to the isolation of a novel compound 3β,9α,15α-trihydroxy-(22E,24R)-10(5→4)-abeo-ergosta-6,8(14),22-trien-5-one (1) with a new 5/7/6/5 ring system of ergosterol skeleton. In addition, five new steroids, 5β,6β-epoxy-3β,7α,9α-trihydroxy-(22E,24R)-ergosta-8(14),22-dien-15-one (2), 5β,6β-epoxy-3β,7α-dihydroxy-(22E,24R)-ergosta-8(14),22-dien-15-one (3), 5α,6α-epoxy-3β,9α,15α-trihydroxy-(22E,24R)-ergosta-8(14),22-dien-7-one (4), 15α-acetoxy-(22E,24R)-ergosta-4,6,8(14),22-tetraen-3-one (5), 15β-methoxy-(22E,24R)-ergosta-4,6,8(14),22-tetraen-3-one (6), along with four known ergosterols (7–10), were obtained. All structures were elucidated based on 1D and 2D NMR spectral data. New compounds were evaluated for cytotoxicity against five human cancer cell lines, only compound 4 was found to exhibit a favorable cytotoxicity profile toward all tested tumor cell lines. ![]()
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Affiliation(s)
- Shuang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ling Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Liang-Yan Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ze-Jun Dong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Zheng-Hui Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Ji-Kai Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
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15
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Xiong L, Zhu M, Zhu C, Lin S, Yang Y, Shi J. Structure and bioassay of triterpenoids and steroids isolated from Sinocalamus affinis. JOURNAL OF NATURAL PRODUCTS 2012; 75:1160-1166. [PMID: 22690646 DOI: 10.1021/np300259s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Five triterpenoids with a new 25-norfern carbon skeleton (1-5), a lupane triterpenoid (6), and four 20-hydroxyprogesterone acyl esters (7-10), together with 23 known compounds, were isolated from the stem (with skin removed) of Sinocalamus affinis. The absolute configuration of compound 1 was confirmed by single-crystal X-ray crystallographic analysis using anomalous scattering of Cu Kα radiation. Compounds 1-5 exhibited inhibitory activity against protein tyrosine phosphatase 1B.
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Affiliation(s)
- Liang Xiong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
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16
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Cain NM, Tiekink ERT, Taylor DK. Ozonolysis of Bicyclic 1,2-Dioxines: Initial Scope and Mechanistic Insights. J Org Chem 2012; 77:3808-19. [DOI: 10.1021/jo3001518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicole M Cain
- School of Agriculture, Food and Wine, The University of Adelaide, South Australia 5005, Australia
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17
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Yin H, Xu L, Porter NA. Free Radical Lipid Peroxidation: Mechanisms and Analysis. Chem Rev 2011; 111:5944-72. [DOI: 10.1021/cr200084z] [Citation(s) in RCA: 1195] [Impact Index Per Article: 91.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huiyong Yin
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
- Departments of Medicine and Pharmacology, Division of Clinical Pharmacology, Vanderbilt School of Medicine, Nashville, Tennessee 37232, United States
| | - Libin Xu
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ned A. Porter
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
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18
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Hybelbauerová S, Sejbal J, Dracínský M, Hahnová A, Koutek B. Chemical constituents of Stereum subtomentosum and two other birch-associated basidiomycetes: an interspecies comparative study. Chem Biodivers 2008; 5:743-50. [PMID: 18493960 DOI: 10.1002/cbdv.200890070] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metabolites of the wood-rotting fungus Stereum subtomentosum Pouzar (Basidiomycetes, order Russulales, family Stereaceae) occurring on birch (Betula pendula Roth) trees were phytochemically investigated for the first time. Three main metabolite chemotypes present in MeOH extracts of the fruit bodies, viz. steroids, fatty acids, and water-soluble sugars, were fractionated, isolated, and identified by 1D/2D NMR-spectroscopic analyses, NMR data comparisons, and chemical correlations combined with GC/MS experiments. Thirteen compounds including two 5 alpha,8 alpha-epidioxy steroids, alpha,alpha'-trehalose, D-arabinitol, D-mannitol, and saturated/unsaturated fatty acids, were identified. Differences among S. subtomentosum and two other birch-associated fungal species, Trametes versicolor (L.: Fr.) Pilát, and Piptoporus betulinus (Bull.: Fr.) P. Karst (Basidiomycetes, order Polyporales, family Polyporaceae) were evaluated as regards the richness and abundance relationships in metabolite profiling.
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Affiliation(s)
- Simona Hybelbauerová
- Department of Organic and Nuclear Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
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Gao H, Hong K, Zhang X, Liu HW, Wang NL, Zhuang L, Yao XS. New Steryl Esters of Fatty Acids from the Mangrove FungusAspergillus awamori. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790116] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ondeyka JG, Jayasuriya H, Herath KB, Guan Z, Schulman M, Collado J, Dombrowski AW, Kwon SS, McCallum C, Sharma N, MacNaul K, Hayes N, Menke JG, Singh SB. Steroidal and Triterpenoidal Fungal Metabolites as Ligands of Liver X Receptors. J Antibiot (Tokyo) 2005; 58:559-65. [PMID: 16320760 DOI: 10.1038/ja.2005.76] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cholesterol homeostasis is tightly controlled process that involves a variety of regulators including liver X receptors (LXR). Agonists of LXR are expected to increase cholesterol efflux, lower LDL, and raise HDL levels. Screening of a natural product library of microbial extracts using a LXR-scintillation proximity assay (SPA) binding assay and bioassay-guided fractionation of a number of fungal extracts led to the isolation of five ergostane and a cycloartane derivative. These compounds exhibited IC50 value ranging 0.5 approximately 9 microM in the binding assay for a-receptor and a number of these showed in vitro agonist activity in the coactivator association assays but lacked the cell based LXR activation. The isolation and LXR activity of these compounds are described.
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Affiliation(s)
- John G Ondeyka
- Merck Research Laboratories, P. O. Box 2000, Rahway, New Jersey 07065, USA
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