1
|
Khadem S, Marles RJ. Biological activity of natural 2-quinolinones. Nat Prod Res 2024:1-15. [PMID: 38824680 DOI: 10.1080/14786419.2024.2359545] [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: 03/20/2024] [Accepted: 05/18/2024] [Indexed: 06/04/2024]
Abstract
While natural products have undeniably played a crucial role in drug discovery, challenges such as limited availability and complex synthesis methods have hindered the identification of lead compounds. At the core of numerous natural and synthetic compounds, each displaying distinct biological behaviours, lies the foundational structure of 2-quinolinone. Compounds with this structural motif exhibit a broad range of effects in different tissues. Furthermore, specific members showcase therapeutic potential for various disorders. Despite the significance of these compounds, the current review literature has not provided a comprehensive overview, underscoring the essential contribution of this article in exploring their biological functions. This study examines the biological activity of selected 2-quinolinone alkaloids across diverse organisms, unveiling their potential as a source of innovative bioactive natural products.
Collapse
Affiliation(s)
- Shahriar Khadem
- Safe Environments Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, Canada
| | - Robin J Marles
- Retired Senior Scientific Advisor, Health Canada, Ottawa, Canada
| |
Collapse
|
2
|
Wang L, Zhao N, Bai Y, Liu Y, Xiao S, Wang J. Sequential Nucleophilic Addition and Regioselective Ring‐Expansion Reactions of α‐Diazophosphonates with Isatins:Access to 4‐Phosphonylated‐3‐hydroxyquinolin‐2(1H)‐ones. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lei Wang
- Institute of Medicinal Plant Development Department of Natural Medicine Chemistry Research Center Chinese Academy of Medical Science and Peking Union Medical College 100193 Beijing CHINA
| | - Nannan Zhao
- Dalian Polytechnic University School of Biological Engineering CHINA
| | - Yan Bai
- Zhejiang Agriculture and Forestry University: Zhejiang A and F University College of Food and Health CHINA
| | - Yujia Liu
- Dalian Polytechnic University School of Biological Engineering CHINA
| | - Shan Xiao
- Dongguan University of Technology School of Nutrition and Health CHINA
| | - Jihui Wang
- Dongguan University of Technology School of Nutrition and Health CHINA
| |
Collapse
|
3
|
Hou B, Zhou Y, Li W, Liu J, Wang C. Synthesis and evaluation of tryptanthrins as antitumor agents. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
4
|
Mamedov VA, Mamedova VL, Qu ZW, Zhu H, Galimullina VR, Korshin DE, Khikmatova GZ, Litvinov IA, Latypov SK, Sinyashin OG, Grimme S. Synthesis and Mechanistic Insights of the Formation of 3-Hydroxyquinolin-2-ones including Viridicatin from 2-Chloro- N,3-diaryloxirane-2-carboxamides under Acid-Catalyzed Rearrangements. J Org Chem 2021; 86:13514-13534. [PMID: 34505764 DOI: 10.1021/acs.joc.1c01592] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-Benzyl-2-chloro-N,3-diaryloxirane-2-carboxamides, easily obtained from aromatic aldehydes and anilides of dichloroacetic acid under Darzens condensation conditions, proved to be excellent starting compounds for the synthesis of 3-hydroxyindolin-2-ones, cyclohepto[b]pyrrole-2,3-diones, and 1-azaspiro[4.5]deca-3,6,9-triene-2-ones via the C(sp2)-C(sp2) bond formation in the first case and C(sp2)-C(sp3) bond formation in the second and third cases. Under optimized reaction conditions, 3-hydroxyindolin-2-ones are obtained in a one-pot process, which involves the treatment of N-benzyl-2-chloro-N,3-diaryloxirane-2-carboxamides with CF3CO2H or AcOH/H2SO4. In the case of intramolecular cyclization, the detailed reaction channels depend strongly on the substituents present in the anilide component and in the aromatic ring of the aldehyde component of N-benzyl-2-chloro-N,3-diaryloxirane-2-carboxamides, as well as the temperature and duration of the reaction. A combined experimental and DFT mechanistic study of the formation of 1-benzyl-3-hydroxy-4-arylquinolin-2(1H)-ones showed that there are three competing reaction channels: (a) ring-closure via the ipso site, (b) ring-closure via the 1,2-Cl shift, and (c) ring-closure via the ortho site. Such mechanistic insights enabled an effective one-pot gram-scale synthesis of viridicatin from benzaldehyde and 2,2-dichloro-N-(4-methoxybenzyl)-N-phenylacetamide.
Collapse
Affiliation(s)
- Vakhid A Mamedov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Vera L Mamedova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Venera R Galimullina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Dmitry E Korshin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Gul'naz Z Khikmatova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Igor A Litvinov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Shamil K Latypov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Oleg G Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| |
Collapse
|
5
|
Wang CF, Huang XF, Xiao HX, Hao YJ, Xu L, Yan QX, Zou ZB, Xie CL, Xu YQ, Yang XW. Chemical Constituents of the Marine Fungus Penicillium sp. MCCC 3A00228. Chem Biodivers 2021; 18:e2100697. [PMID: 34585839 DOI: 10.1002/cbdv.202100697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 09/10/2021] [Indexed: 01/24/2023]
Abstract
One new (d-arabinitol-anofinicate, 1) and fourteen known (2-15) compounds were isolated from the marine Penicillium sp. MCCC 3A00228. The structure of the new compound was established mainly by extensive spectroscopic analyses. Compound 1 exhibited weak transcriptional effect on Nur77. While compound 13 showed moderate in vitro anti-proliferative effect against QGY7701, H1299, and HCT116 tumor cells with IC50 values of 21.2 μM, 18.2 μM, and 17.6 μM, respectively.
Collapse
Affiliation(s)
- Chao-Feng Wang
- College of Pharmacy, Jiangxi University of Chinese Medicine, Meiling Avenue, Nanchang, 330004, China.,Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Xiao-Fang Huang
- College of Pharmacy, Jiangxi University of Chinese Medicine, Meiling Avenue, Nanchang, 330004, China
| | - Hong-Xiu Xiao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - You-Jia Hao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Lin Xu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Qing-Xiang Yan
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Zheng-Biao Zou
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Chun-Lan Xie
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Yan-Qin Xu
- College of Pharmacy, Jiangxi University of Chinese Medicine, Meiling Avenue, Nanchang, 330004, China
| | - Xian-Wen Yang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| |
Collapse
|
6
|
Tang H, Tang Y, Kurnikov IV, Liao HJ, Chan NL, Kurnikova MG, Guo Y, Chang WC. Harnessing the Substrate Promiscuity of Dioxygenase AsqJ and Developing Efficient Chemoenzymatic Synthesis for Quinolones. ACS Catal 2021; 11:7186-7192. [DOI: 10.1021/acscatal.1c01150] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haoyu Tang
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Yijie Tang
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Igor V. Kurnikov
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Hsuan-Jen Liao
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, 100 Taiwan
| | - Nei-Li Chan
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, 100 Taiwan
| | - Maria G. Kurnikova
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yisong Guo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Wei-chen Chang
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| |
Collapse
|
7
|
Fernandez-Bunster G. Diversity, Phylogenetic Profiling of Genus Penicillium, and Their Potential Applications. Fungal Biol 2021. [DOI: 10.1007/978-3-030-67561-5_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Paterna R, Padanha R, Russo R, Frade RF, Faustino H, Gois PM. Synthesis of 4-substituted-3-Hydroxyquinolin-2(1H)-ones with anticancer activity. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.130983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
9
|
Kashapov RR, Lykova AA, Mamedova VL, Kadyrova SF, Sapunova AS, Voloshina AD, Mamedov VA, Zakharova LY. Solubility and biological activity enhancement of the highly lipophilic viridicatins via interaction with cyclodextrins. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
10
|
The Structural Diversity of Marine Microbial Secondary Metabolites Based on Co-Culture Strategy: 2009-2019. Mar Drugs 2020; 18:md18090449. [PMID: 32867339 PMCID: PMC7551240 DOI: 10.3390/md18090449] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/25/2020] [Accepted: 08/25/2020] [Indexed: 12/15/2022] Open
Abstract
Marine microorganisms have drawn great attention as novel bioactive natural product sources, particularly in the drug discovery area. Using different strategies, marine microbes have the ability to produce a wide variety of molecules. One of these strategies is the co-culturing of marine microbes; if two or more microorganisms are aseptically cultured together in a solid or liquid medium in a certain environment, their competition or synergetic relationship can activate the silent biosynthetic genes to produce cryptic natural products which do not exist in monocultures of the partner microbes. In recent years, the co-cultivation strategy of marine microbes has made more novel natural products with various biological activities. This review focuses on the significant and excellent examples covering sources, types, structures and bioactivities of secondary metabolites based on co-cultures of marine-derived microorganisms from 2009 to 2019. A detailed discussion on future prospects and current challenges in the field of co-culture is also provided on behalf of the authors’ own views of development tendencies.
Collapse
|
11
|
Lv S, Sun Y, Xu Y, Yang S, Wang L. Lewis base catalyzed ring-expansion of isatin with 2,2,2-trifluorodiazoethane (CF3CHN2): An efficient route to 3-hydroxy-4-(trifluoromethyl)quinolinones. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
12
|
El Euch IZ, El-Metwally MM, Frese M, Sewald N, Abdissa N, Shaaban M. Secondary metabolites from Penicillium sp. 8PKH isolated from deteriorated rice straws. ACTA ACUST UNITED AC 2019; 74:283-288. [PMID: 31246580 DOI: 10.1515/znc-2019-0010] [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: 01/17/2019] [Accepted: 06/04/2019] [Indexed: 11/15/2022]
Abstract
In the search for bioactive secondary metabolites from terrestrial fungi, four compounds, namely, 3-methyl-3H-quinazolin-4-one (1), aurantiomide C (2), 3-O-methylviridicatin (3), and dehydrocyclopeptine (4), were isolated from Penicillium sp. 8PKH, fungal strain, isolated from deteriorated rice straws. The structures of the isolated compounds were identified by extensive NMR and mass analyses and comparison with literature data. This is the first report of the structure of 3-methyl-3H-quinazolin-4-one (1) with full NMR spectral data having been previously identified by GC-MS from Piper beetle. Analysis of the non-polar fractions of the strain extract by GC-MS revealed the presence of additional eight compounds: methyl-hexadecanoate, methyl linoleate, methyl-9 (Z)-octadecenoate, methyl-octadecanoate, cis-9-oxabicyclo (6.1.0) nonane, 9,12-octadecadienal (9E,12E), ethyl-(E)-9-octadecenoate, and 3-buten-2-ol. The isolated compounds were evaluated for their antimicrobial and cytotoxic activities and exhibited little or no inhibitory activities against the test strains. The taxonomical characterisation and fermentation of the fungal strain were reported as well.
Collapse
Affiliation(s)
- Imene Z El Euch
- Organic and Bioorganic Chemistry, Department of Chemistry, University of Bielefeld, University Str. 25, 33615 Bielefeld, Germany
| | - Mohammad M El-Metwally
- Botany and Microbiology Department, Faculty of Science, Damanhour University, Damanhour, Egypt
| | - Marcel Frese
- Organic and Bioorganic Chemistry, Department of Chemistry, University of Bielefeld, University Str. 25, 33615 Bielefeld, Germany
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Department of Chemistry, University of Bielefeld, University Str. 25, 33615 Bielefeld, Germany
| | - Negera Abdissa
- Department of Chemistry, Jimma University, Jimma, Ethiopia
| | - Mohamed Shaaban
- Organic and Bioorganic Chemistry, Department of Chemistry, University of Bielefeld, University Str. 25, 33615 Bielefeld, Germany.,Chemistry of Natural Compounds Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, El-Behoosst., Dokki-Cairo 12622, Egypt, Phone: +202-3371483-2609, Fax: +202-3370931
| |
Collapse
|
13
|
Mamedov VA, Mamedova VL, Kadyrova SF, Galimullina VR, Khikmatova GZ, Korshin DE, Gubaidullin AT, Krivolapov DB, Rizvanov IK, Bazanova OB, Sinyashin OG, Latypov SK. Synthesis of 3-Hydroxy-4-arylquinolin-2-ones Including Viridicatol via a Darzens Condensation/Friedel-Crafts Alkylation Strategy. J Org Chem 2018; 83:13132-13145. [PMID: 30272451 DOI: 10.1021/acs.joc.8b01871] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The new efficient synthesis of biologically important 3-hydroxy-4-arylquinolin-2-ones through the Darzens condensation (epoxidation) of dichloroacetanilides with aromatic aldehydes followed by one-pot dechlorative epoxide-arene cyclization is described. This methodology has been utilized for the synthesis of naturally occurring viridicatol, a fungal metabolite isolated from the penicillium species.
Collapse
Affiliation(s)
- Vakhid A Mamedov
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation.,Kazan National Research Technological University , Karl Marx str. 68 , 420015 Kazan , Russian Federation
| | - Vera L Mamedova
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation.,Kazan National Research Technological University , Karl Marx str. 68 , 420015 Kazan , Russian Federation
| | - Saniya F Kadyrova
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation.,Kazan National Research Technological University , Karl Marx str. 68 , 420015 Kazan , Russian Federation
| | - Venera R Galimullina
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation
| | - Gul'naz Z Khikmatova
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation.,Kazan National Research Technological University , Karl Marx str. 68 , 420015 Kazan , Russian Federation
| | - Dmitry E Korshin
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation.,Kazan National Research Technological University , Karl Marx str. 68 , 420015 Kazan , Russian Federation
| | - Aidar T Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation
| | - Dmitry B Krivolapov
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation
| | - Il'dar Kh Rizvanov
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation
| | - Olga B Bazanova
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation
| | - Oleg G Sinyashin
- Kazan National Research Technological University , Karl Marx str. 68 , 420015 Kazan , Russian Federation
| | - Shamil K Latypov
- A.E. Arbuzov Institute of Organic and Physical Chemistry , FRC Kazan Scientific Center of Russian Academy of Sciences , Arbuzov str. 8 , 420088 Kazan , Russian Federation
| |
Collapse
|
14
|
Chang WC, Liu P, Guo Y. Mechanistic Elucidation of Two Catalytically Versatile Iron(II)- and α-Ketoglutarate-Dependent Enzymes: Cases Beyond Hydroxylation. COMMENT INORG CHEM 2018. [DOI: 10.1080/02603594.2018.1509856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wei-chen Chang
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Pinghua Liu
- Department of Chemistry, Boston University, Boston, Massachusetts, USA
| | - Yisong Guo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| |
Collapse
|
15
|
Tangella Y, Manasa KL, Krishna NH, Sridhar B, Kamal A, Nagendra Babu B. Regioselective Ring Expansion of Isatins with In Situ Generated α-Aryldiazomethanes: Direct Access to Viridicatin Alkaloids. Org Lett 2018; 20:3639-3642. [DOI: 10.1021/acs.orglett.8b01417] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yellaiah Tangella
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Kesari Lakshmi Manasa
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Namballa Hari Krishna
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | | | - Ahmed Kamal
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Bathini Nagendra Babu
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| |
Collapse
|
16
|
El Euch IZ, Frese M, Sewald N, Smaoui S, Shaaban M, Mellouli L. Bioactive secondary metabolites from new terrestrial Streptomyces sp. TN82 strain: Isolation, structure elucidation and biological activity. Med Chem Res 2018. [DOI: 10.1007/s00044-017-2130-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Ramanathan M, Wan J, Liu ST. Preparation of 3-hydroxyquinolines from direct oxidation of dihydroquinolinium salts. RSC Adv 2018; 8:38166-38174. [PMID: 35559109 PMCID: PMC9089837 DOI: 10.1039/c8ra07940d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 11/05/2018] [Indexed: 11/21/2022] Open
Abstract
A series of functionalized 3,4-dihydroquinolinium salts were prepared from the reaction of aryldiazonium salt with alkene in a nitrile solution. Further oxidation yielding either 3-hydroxyquinoline or quinoline products was investigated. A one-pot process from aryldiazonium salts, alkenes and nitriles leading to 3-hydroxyquinolines was also developed. Furthermore, an intramolecular trapping of an N-arylnitrilium ion with a vinyl group at the ortho position leading to 2-substituted quinolines was revealed. 3-Hydroxyquinoline derivatives can be prepared by a cascade cyclization of aryldiazonium salts with nitriles and alkenes followed by oxygenation.![]()
Collapse
Affiliation(s)
- Mani Ramanathan
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan 106
| | - Jing Wan
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan 106
| | - Shiuh-Tzung Liu
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan 106
| |
Collapse
|
18
|
Mirgorodskaya AB, Mamedov VA, Zakharova LY, Valeeva FG, Mamedova VL, Galimullina VR, Kushnasarova RA, Sinyashin OG. Surfactant solutions for enhancing solubility of new arylquinolin-2-ones. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
19
|
Fang L, Xue L, Yang P, Li X, Wang Z. A Facile Route to 4-Polyfluoroarylquinolin-2(1H)-ones and 4-Polyfluoroarylcoumarins via C–H Bond Activation. CHEM LETT 2017. [DOI: 10.1246/cl.170466] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ling Fang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
| | - Lijun Xue
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China
| | - Peng Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China
| | - Xiaodan Li
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, P. R. China
| | - Zhiyong Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China
| |
Collapse
|
20
|
Mamedov VA, Mamedova VL, Syakaev VV, Korshin DE, Khikmatova GZ, Mironova EV, Bazanova OB, Rizvanov IK, Latypov SK. Simple synthesis of 3-hydroxyquinolines via Na 2 S 2 O 4 -mediated reductive cyclization of (2-(2-nitrophenyl)oxiran-1-yl)(aryl)methanones ( o -nitrobenzalacetophenone oxides). Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.058] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Malini K, Periyaraja S, Shanmugam P. Synthesis of Angularly Fused Pyrrolo[3,2-c
]quinoline Lactones and 4-Carboxy-3-vinyl-1,2-dihydroquinolin-2-ones from Morita-Baylis-Hillman Adducts with Labile Acrylate Esters as Michael Acceptors by [3+2] Cycloaddition and Hoffmann-Type Elimination. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700449] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kodi Malini
- Organic & Bio-Organic Chemistry Division; Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI); Adyar 600020 Chennai India
| | - Somasundharam Periyaraja
- Organic & Bio-Organic Chemistry Division; Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI); Adyar 600020 Chennai India
| | - Ponnusamy Shanmugam
- Organic & Bio-Organic Chemistry Division; Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI); Adyar 600020 Chennai India
| |
Collapse
|
22
|
Ma YM, Qiao K, Kong Y, Li MY, Guo LX, Miao Z, Fan C. A new isoquinolone alkaloid from an endophytic fungus R22 of Nerium indicum. Nat Prod Res 2016; 31:951-958. [PMID: 27910702 DOI: 10.1080/14786419.2016.1258556] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A new isoquinolone alkaloid named 5-hydroxy-8-methoxy-4-phenylisoquinolin-1(2H)-one (3), together with two known quinolinone alkaloids 3-O-methylviridicatin (1) and viridicatol (2) were isolated from the fermentation of an endophytic fungus Penicillium sp. R22 in Nerium indicum. Their structures were elucidated by NMR, IR and MS data, and were also confirmed by comparing with the reported data in the literature. Meanwhile, the antibacterial and antifungal activities of all compounds were tested, and the results showed that three compounds had strong antifungal activity. Among them, compound 2 revealed potent antibacterial activity against Staphylococcus aureus with MIC value of 15.6 μg/mL.
Collapse
Affiliation(s)
- Yang-Min Ma
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| | - Ke Qiao
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| | - Yang Kong
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China.,b Institute of Food and Biological Engineering , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| | - Meng-Yun Li
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| | - Lin-Xin Guo
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| | - Zhi Miao
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| | - Chao Fan
- a Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education , Shaanxi University of Science and Technology , Shaanxi Xi'an , China
| |
Collapse
|
23
|
Zhang Y, Mu J, Essmann F, Feng Y, Kramer M, Bao HY, Grond S. A new quinolinone and its natural/artificial derivatives from a shark gill-derived fungus Penicillium polonicum AP2T1. Nat Prod Res 2015; 31:985-989. [DOI: 10.1080/14786419.2015.1045906] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yi Zhang
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, P.R. China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Ocean University, Zhanjiang, P.R. China
- Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Guangdong Ocean University, Zhanjiang, P.R. China
- School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, P.R. China
- School of Life Science and Technology, Dalian University of Technology, Dalian, P.R. China
| | - Jun Mu
- Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, P.R. China
| | - Frank Essmann
- Inter-faculty Institute for Biochemistry, University of Tübingen, Tübingen, Germany
| | - Yan Feng
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, P.R. China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Ocean University, Zhanjiang, P.R. China
- Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Guangdong Ocean University, Zhanjiang, P.R. China
| | - Markus Kramer
- Institute of Organic Chemistry, University of Tübingen, Tübingen, Germany
| | - Hai-yan Bao
- School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, P.R. China
| | - Stephanie Grond
- Institute of Organic Chemistry, University of Tübingen, Tübingen, Germany
| |
Collapse
|
24
|
Klásek A, Lyčka A, Rouchal M, Rudolf O, Růžička A. Reduction of 3-Aminoquinoline-2,4(1H,3H)-diones and Deamination of the Reaction Products. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201300319] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
25
|
Li J, Wang J, Jiang CS, Li G, Guo YW. (+)-Cyclopenol, a new naturally occurring 7-membered 2,5-dioxopiperazine alkaloid from the fungus Penicillium sclerotiorum endogenous with the Chinese mangrove Bruguiera gymnorrhiza. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2014; 16:542-548. [PMID: 24773150 DOI: 10.1080/10286020.2014.911290] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 03/30/2014] [Accepted: 03/31/2014] [Indexed: 06/03/2023]
Abstract
One new naturally occurring 7-membered 2,5-dioxopiperazine alkaloid named (+)-cyclopenol (1), along with nine known compounds including viridicatol (2), 3-(dimethylaminomethyl)-1-(1,1-dimethyl-2-propenyl)indole (3), anacine (4), aurantiomide C (5), viridicatin (6), 3-O-methylviridicatin (7), verrucosidin (8), ergosterol (9), and ergosterol peroxide (10), was isolated from the EtOAc extract of fungus Penicillium sclerotiorum, an endophytic fungal strain isolated from Chinese mangrove Bruguiera gymnorrhiza. The chemical structure of the new compound 1 was elucidated on the basis of detailed spectroscopic analysis. The absolute configuration of 1 was determined by single-crystal X-ray analysis with Cu Kα radiation (λ = 1.54178 Å). To our knowledge, (+)-cyclopenol (1) represents the first example of 7-membered 2,5-dioxopiperazine isolated from mangrove endophytic fungus.
Collapse
Affiliation(s)
- Jing Li
- a School of Biological and Chemical Engineering, Jiangsu University of Science and Technology , Zhenjiang 212018 , China
| | | | | | | | | |
Collapse
|
26
|
Rudolf O, Rouchal M, Lyčka A, Klásek A. Pinacol Rearrangement of 3,4-Dihydro-3,4-dihydroxyquinolin-2(1H)-ones: An Alternative Pathway to Viridicatin Alkaloids and Their Analogs. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201300074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
27
|
Paterna R, André V, Duarte MT, Veiros LF, Candeias NR, Gois PMP. Ring-Expansion Reaction of Isatins with Ethyl Diazoacetate Catalyzed by Dirhodium(II)/DBU Metal-Organic System: En Route to Viridicatin Alkaloids. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300796] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
28
|
Yuan Y, Yang R, Zhang-Negrerie D, Wang J, Du Y, Zhao K. One-Pot Synthesis of 3-Hydroxyquinolin-2(1H)-ones from N-Phenylacetoacetamide via PhI(OCOCF3)2-Mediated α-Hydroxylation and H2SO4-Promoted Intramolecular Cyclization. J Org Chem 2013; 78:5385-92. [DOI: 10.1021/jo400541s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yucheng Yuan
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Rui Yang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Daisy Zhang-Negrerie
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Junwei Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Kang Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
29
|
Kozlovskii AG, Zhelifonova VP, Antipova TV. Fungi of the genus Penicillium as producers of physiologically active compounds (Review). APPL BIOCHEM MICRO+ 2012. [DOI: 10.1134/s0003683813010092] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
30
|
Abstract
Pyrrolobenzodiazepines (PBDs) are sequence selective DNA alkylating agents with remarkable antineoplastic activity. They are either naturally produced by actinomycetes or synthetically produced. The remarkable broad spectrum of activities of the naturally produced PBDs encouraged the synthesis of several PBDs, including dimeric and hybrid PBDs yielding to an improvement in the DNA-binding sequence specificity and in the potency of this class of compounds. However, limitation in the chemical synthesis prevented the testing of one of the most potent PBDs, sibiromycin, a naturally produced glycosylated PBDs. Only recently, the biosynthetic gene clusters for PBDs have been identified opening the doors to the production of glycosylated PBDs by mutasynthesis and biosynthetic engineering. This review describes the recent studies on the biosynthesis of naturally produced pyrrolobenzodiazepines. In addition, it provides an overview on the isolation and characterization of naturally produced PBDs, chemical synthesis of PBDs, mechanism of DNA alkylation, and DNA-binding affinity and cytotoxic properties of both naturally produced and synthetic pyrrolobenzodiazepines.
Collapse
Affiliation(s)
- Barbara Gerratana
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
| |
Collapse
|
31
|
Borhade SR, Waghmode SB. An efficient synthesis of 4-arylquinolin-2(1H)-ones and 3-alkenyl-4-arylquinolin-2(1H)-one using a Pd/NiFe2O4-catalyzed consecutive Heck reaction. CAN J CHEM 2011. [DOI: 10.1139/v11-103] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A convenient one-pot method for the synthesis of 4-arylquinolin-2(1H)-ones and 4-arylcoumarins has been described. The successive Heck reaction on substituted 2-iodoaniline and 2-iodophenol catalyzed by a Pd/nickel ferrite catalyst followed by in situ cyclization was the key step. The scope of this methodology was extended to the synthesis of bioactive 3-alkenyl derivatives of 4-arylquinolin-2(1H)-ones.
Collapse
Affiliation(s)
- Sanjay R. Borhade
- Department of Chemistry, University of Pune, Ganeshkhind, Pune 411 007, India
| | - Suresh B. Waghmode
- Department of Chemistry, University of Pune, Ganeshkhind, Pune 411 007, India
| |
Collapse
|
32
|
Liu JL, Hu ZY, Xu QY. 3′-(3-Hydroxyphenyl)-4-methylspiro[benzo[ e][1,4]diazepine-3,2′-oxirane]-2,5(1 H,4 H)-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1670. [PMID: 21837069 PMCID: PMC3152106 DOI: 10.1107/s1600536811022161] [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: 05/31/2011] [Accepted: 06/08/2011] [Indexed: 11/10/2022]
Abstract
In the title compound, C17H14N2O4, the seven-membered ring adopts a boat conformation, and the two benzene rings make a dihedral angle of 45.22 (5)°. The crystal packing is stabilized by intermolecular N—H⋯O and O—H⋯O hydrogen bonds.
Collapse
|
33
|
Kobayashi Y, Harayama T. A concise and versatile synthesis of viridicatin alkaloids from cyanoacetanilides. Org Lett 2009; 11:1603-6. [PMID: 19256518 DOI: 10.1021/ol900255g] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The efficient synthesis of 3-hydroxy-4-arylquinolin-2(1H)-ones through one-pot Knoevenagel condensation/epoxidation of cyanoacetanilides followed by decyanative epoxide-arene cyclization is described. A convergent assembly with functionalized aldehydes allows for rapid synthesis with diverse substitution patterns. Isolation of 3-hydroxy-4-arylquinolin-2(1H)-ones is readily accomplished by precipitation and filtration.
Collapse
Affiliation(s)
- Yusuke Kobayashi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, Sanuki-shi, Kagawa 769-2193, Japan
| | | |
Collapse
|
34
|
Ribeiro N, Tabaka H, Peluso J, Fetzer L, Nebigil C, Dumont S, Muller CD, Désaubry L. Synthesis of 3-O-methylviridicatin analogues with improved anti-TNF-α properties. Bioorg Med Chem Lett 2007; 17:5523-4. [PMID: 17768048 DOI: 10.1016/j.bmcl.2007.08.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Revised: 08/15/2007] [Accepted: 08/15/2007] [Indexed: 12/20/2022]
Abstract
We synthesized 3-O-methylviridicatin and several analogues of this fungal metabolite. We showed that replacement of the methoxy moiety by a thiomethyl enhanced dramatically its ability to inhibit TNF-alpha secretion. These results strongly suggest that 4-phenyl-3-methylthioquinolinone may provide the basis for the development of new anti-inflammatory agents.
Collapse
Affiliation(s)
- Nigel Ribeiro
- UMR 7175 LC1, ULP-CNRS, Faculté de Pharmacie, 67401 Illkirch, France
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Cheng JF, Chen M, Wallace D, Tith S, Arrhenius T, Kashiwagi H, Ono Y, Ishikawa A, Sato H, Kozono T, Sato H, Nadzan AM. Discovery and structure-activity relationship of coumarin derivatives as TNF-alpha inhibitors. Bioorg Med Chem Lett 2004; 14:2411-5. [PMID: 15109623 DOI: 10.1016/j.bmcl.2004.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2004] [Revised: 03/03/2004] [Accepted: 03/08/2004] [Indexed: 11/16/2022]
Abstract
The discovery and structure-activity relationship of a novel series of coumarin-based TNF-alpha inhibitors is described. Starting from the initial lead 1a, various derivatives were prepared surrounding the coumarin core structure to optimize the in vitro inhibitory activity of TNF-alpha production by human peripheral blood mononuclear cells (hPBMC), stimulated by bacterial lipopolysaccharide (LPS). Selected compounds also demonstrated in vivo inhibition of TNF-alpha production in rats.
Collapse
Affiliation(s)
- Jie-Fei Cheng
- Department of Chemistry, Chugai Pharma USA LLC, 6275 Nancy Ridge Drive, San Diego, CA 92121, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Helbig F, Steighardt J, Roos W. Uric acid is a genuine metabolite of Penicillium cyclopium and stimulates the expression of alkaloid biosynthesis in this fungus. Appl Environ Microbiol 2002; 68:1524-33. [PMID: 11916664 PMCID: PMC123850 DOI: 10.1128/aem.68.4.1524-1533.2002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
On searching for endogenous, low-molecular-weight effectors of benzodiazepine alkaloid biosynthesis in Penicillium cyclopium uric acid was isolated from ethanolic or autoclaved mycelial extracts of this fungus. The isolation was based on a three-step high-pressure liquid chromatography procedure guided by a microplate bioassay, and uric acid was identified by mass spectrometry and the uricase reaction. Conidiospore suspensions that were treated with this compound during the early phase of outgrowth developed emerged cultures with an enhanced rate of alkaloid production. Uric acid treatment did not increase the in vitro measurable activity of the rate-limiting biosynthetic enzyme, cyclopeptine synthetase. However, these cultures displayed a reduced rate of uptake of the alkaloid precursor L-phenylalanine into the vacuoles of the hyphal cells as assayed in situ. It is suggested that the depressed capacity of vacuolar uptake caused by the contact of outgrowing spores with uric acid liberated from hyphal cells results in an enhanced availability of the precursor L-phenylalanine in the cytoplasm and thus accounts at least in part for the increase in alkaloid production.
Collapse
Affiliation(s)
- Florian Helbig
- Department of Cellular Physiology, Institute of Pharmaceutical Biology, University of Halle, Halle, Germany
| | | | | |
Collapse
|