51
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Shi W, Zhou L, Mao B, Wang Q, Wang C, Zhang C, Li X, Xiao Y, Guo H. Phosphine-Catalyzed [3+2] Annulation of β-Sulfonamido-Substituted Enones with Sulfamate-Derived Cyclic Imines. J Org Chem 2018; 84:679-686. [DOI: 10.1021/acs.joc.8b02515] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wangyu Shi
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Leijie Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Biming Mao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Qijun Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Chang Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Cheng Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Xuefeng Li
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
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52
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Yang KC, Li QZ, Liu Y, He QQ, Liu Y, Leng HJ, Jia AQ, Ramachandran S, Li JL. Highly Stereoselective Assembly of α-Carbolinone Skeletons via N-Heterocyclic Carbene-Catalyzed [4 + 2] Annulations. Org Lett 2018; 20:7518-7521. [DOI: 10.1021/acs.orglett.8b03277] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kai-Chuan Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Yu Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Qing-Qing He
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Yue Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Hai-Jun Leng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Ai-Qiong Jia
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Shanmugavel Ramachandran
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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53
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Özkaya FC, Ebrahim W, El-Neketi M, Tansel Tanrıkul T, Kalscheuer R, Müller WE, Guo Z, Zou K, Liu Z, Proksch P. Induction of new metabolites from sponge-associated fungus Aspergillus carneus by OSMAC approach. Fitoterapia 2018; 131:9-14. [DOI: 10.1016/j.fitote.2018.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/02/2018] [Accepted: 10/07/2018] [Indexed: 10/28/2022]
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54
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Mari G, Catalani S, Antonini E, De Crescentini L, Mantellini F, Santeusanio S, Lombardi P, Amicucci A, Battistelli S, Benedetti S, Palma F. Synthesis and biological evaluation of novel heteroring-annulated pyrrolino-tetrahydroberberine analogues as antioxidant agents. Bioorg Med Chem 2018; 26:5037-5044. [DOI: 10.1016/j.bmc.2018.08.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 08/28/2018] [Accepted: 08/30/2018] [Indexed: 12/26/2022]
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55
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Bioactive Novel Indole Alkaloids and Steroids from Deep Sea-Derived Fungus Aspergillus fumigatus SCSIO 41012. Molecules 2018; 23:molecules23092379. [PMID: 30231470 PMCID: PMC6225233 DOI: 10.3390/molecules23092379] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 09/04/2018] [Accepted: 09/11/2018] [Indexed: 11/17/2022] Open
Abstract
Two new alkaloids, fumigatosides E (1) and F (2), and a new natural product, 3, 7-diketo-cephalosporin P1 (6) along with five known compounds (3–5, 7, 8) were isolated from deep-sea derived fungal Aspergillus fumigatus SCSIO 41012. Their structures were determined by extensive spectroscopic data analysis, including 1D, 2D nuclear magnetic resonance (NMR) and mass spectrometry (MS), and comparison between the calculated and experimental electronic circular dichroism (ECD) spectra. In addition, all compounds were tested for antibacterial and antifungal inhibitory activities. Compound 1 showed significant antifungal activity against Fusarium oxysporum f. sp. momordicae with MIC at 1.56 µg/mL. Compound 4 exhibited significant higher activity against S. aureus (16,339 and 29,213) with MIC values of 1.56 and 0.78 µg/mL, respectively, and compound 2 exhibited significant activity against A. baumanii ATCC 19606 with a MIC value of 6.25 µg/mL.
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56
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Yao J, Xiao J, Wei X, Lu Y. Chaetominine induces cell cycle arrest in human leukemia K562 and colon cancer SW1116 cells. Oncol Lett 2018; 16:4671-4678. [PMID: 30214601 DOI: 10.3892/ol.2018.9161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/21/2017] [Indexed: 02/05/2023] Open
Abstract
Chaetominine is a cytotoxic alkaloid that has been demonstrated to promote apoptotic cell death in human leukemia K562 cells. In the present study, chaetominine inhibited K562 (IC50 34 nM) and SW1116 (IC50 46 nM) cell growth. However, it remains unclear whether the inhibition of cell growth is associated with the cell cycle. To assess this potential relationship, the effect of chaetominine on the cell cycle of K562 and SW1116 cells was examined. Chaetominine treatment caused cell apoptosis and G1-phase arrest in SW1116 cells. Conversely, K562 cells underwent S-phase arrest according to flow cytometric analysis. The present study also aimed to elucidate the molecular mechanisms underpinning cell cycle regulation following the incubation of the associated cells with chaetominine. Western blot and reverse transcription-quantitative polymerase chain reaction analyses suggested that chaetominine treatment facilitated the expression of p53, p21, checkpoint kinase 2 (Chk2) and phosphorylated ataxia telangiectasia mutated (p-ATM) and caused a reduction in the mRNA levels of cyclin E and cyclin-dependent kinases (CDKs) 2 and 4. These results suggest that chaetominine may be involved in the regulation of p53/p21 and ATM and Rad3-related (ATM)/Chk2 signaling in SW1116 cells. Previous studies have demonstrated that these signaling pathways are responsible for G1-phase arrest. Results of the present study demonstrated that the expression of p-ATR and Chk1 were increased in K562 cells. Additionally, cdc25A levels were decreased, while protein and gene expression levels of cyclin A and CDK2 were repressed. These results elucidated the role of chaetominine in in the regulation of ATR/cdc25A/Chk1 expression in K562 cells. These proteins are thus important determinants in the initiation of S-phase arrest. These data support the hypothesis that chaetominine is a potential anti-cancer therapeutic agent that targets the cell cycle.
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Affiliation(s)
- Jingyun Yao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Jianbo Xiao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Taipa, Macau 999078, P.R. China
| | - Xing Wei
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Yanhua Lu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, P.R. China
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57
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Geng H, Huang PQ. Rapid Generation of Molecular Complexity by Chemical Synthesis: Highly Efficient Total Synthesis of Hexacyclic Alkaloid (-)-Chaetominine and Its Biosynthetic Implications. CHEM REC 2018; 19:523-533. [PMID: 30252197 DOI: 10.1002/tcr.201800079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/17/2018] [Indexed: 12/20/2022]
Abstract
The efficiency becomes a key issue in today's natural product total synthesis. While biomimetic synthesis is one of the most elegant strategies to achieve synthetic efficiency and thus to approach the ideal synthesis, most biogenetic pathways are unknown or unconfirmed. In this account, we demonstrate, through the shortest and also the most efficient asymmetric total syntheses of the hexacyclic alkaloid (-)-chaetominine to date, that on the basis of biogenetic thinking, one can develop quite efficient bio-inspired total synthesis, which in turn serves to suggest and chemically validate plausible biosynthetic routes for the natural product. The synthetic strategy thus developed is also inspiring for the development of other synthetic methods and efficient total synthesis of other natural products.
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Affiliation(s)
- Hui Geng
- Department of Chemistry Fujian Provincial Key Laboratory of Chemical BiologyiChEM (Collaborative Innovation Center of Chemistry for Energy Materials), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry Fujian Provincial Key Laboratory of Chemical BiologyiChEM (Collaborative Innovation Center of Chemistry for Energy Materials), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, P. R. China
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58
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Affiliation(s)
- Marta Meazza
- Faculty of Natural and Environmental Sciences; University of Southampton; University Road SO17 1BJ UK
| | - Xavier Companyó
- Dipartimento di Scienze Chimiche; University of Padua; via Marzolo 1 35131 Padua Italy
| | - Ramon Rios
- Faculty of Natural and Environmental Sciences; University of Southampton; University Road SO17 1BJ UK
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59
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Tao Q, Ding C, Auckloo BN, Wu B. Bioactive Metabolites from a Hydrothermal Vent Fungus Aspergillus sp. YQ-13. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
To study fermentation from strain Aspergillus sp. YQ-13, dwelling in sediment Kueishantao hydrothermal vents off Taiwan. Compounds were separated and purified by silica gel column, preparative HPLC techniques. Their structures were identified by the physicochemical properties and spectral analysis. The isolates were identified as 3-hydroxy-2-(2-hydroxy-6-methoxy-4-methylbenzoyl)-5-methoxy-benzoic acid methyl ester (1), myristic acid (2), orcinol (3), 1,2-seco-trypacidin (4), leporin A (5), chaetominine (6), 5-hydroxy-2-hydroxymethyl-4H-pyran-4one (7) and N-methyl-2-pyrolidinone (8). Compound 1 was identified as a new natural product belonging to diphenyl ketone family. Known compounds 5 and 6 exhibited antibiotic activity with MIC value of around 1 to 25 μg mL−1 against Bacillus subtilis, Klebsiella pneumoniae, methicillin resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli and Acinetobacter Bauman. Compounds 1, 4, 5 and 6 were tested by the methods of DPPH and FRAP assay, showing moderate antioxidant activities.
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Affiliation(s)
- Qiannan Tao
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Chihong Ding
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | | | - Bin Wu
- Ocean College, Zhejiang University, Hangzhou 310058, China
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60
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Co-addition Strategy for Enhancement of Chaetominine from Submerged Fermentation of Aspergillus fumigatus CY018. Appl Biochem Biotechnol 2018; 186:384-399. [DOI: 10.1007/s12010-018-2714-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 02/06/2018] [Indexed: 01/12/2023]
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61
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Abstract
Exploration of structurally novel natural products greatly facilitates the discovery of biologically active pharmacophores that are biologically validated starting points for the development of new drugs. Endophytes that colonize the internal tissues of plant species, have been proven to produce a large number of structurally diverse secondary metabolites. These molecules exhibit remarkable biological activities, including antimicrobial, anticancer, anti-inflammatory and antiviral properties, to name but a few. This review surveys the structurally diverse natural products with new carbon skeletons, unusual ring systems, or rare structural moieties that have been isolated from endophytes between 1996 and 2016. It covers their structures and bioactivities. Biosynthesis and/or total syntheses of some important compounds are also highlighted. Some novel secondary metabolites with marked biological activities might deserve more attention from chemists and biologists in further studies.
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Affiliation(s)
- Han Gao
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Gang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Hong-Xiang Lou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, China.
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62
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Abstract
Drug metabolites have been monitored with various types of newly developed techniques and/or combination of common analytical methods, which could provide a great deal of information on metabolite profiling. Because it is not easy to analyze whole drug metabolites qualitatively and quantitatively, a single solution of analytical techniques is combined in a multilateral manner to cover the widest range of drug metabolites. Mass-based spectroscopic analysis of drug metabolites has been expanded with the help of other parameter-based methods. The current development of metabolism studies through contemporary pharmaceutical research are reviewed with an overview on conventionally used spectroscopic methods. Several technical approaches for conducting drug metabolic profiling through spectroscopic methods are discussed in depth.
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Affiliation(s)
- Jong-Jae Yi
- Department of Pharmacy, College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon-Si, Gyeonggi-do, 11160, Republic of Korea
| | - Kyeongsoon Park
- Department of Systems Biotechnology, College of Biotechnology and Natural Resources, Chung-Ang University, 4726 Seodong-daero, Anseong-Si, Gyeonggi-do, 17546, Republic of Korea
| | - Won-Je Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jin-Kyu Rhee
- Department of Food Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Woo Sung Son
- Department of Pharmacy, College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon-Si, Gyeonggi-do, 11160, Republic of Korea.
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63
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Khan HPA, Chakraborty TK. Diversity-Oriented Approach to N-Heterocyclic Compounds from α-Phenyl-β-enamino Ester via a Mitsunobu-Michael Reaction Sequence. J Org Chem 2018; 83:2027-2039. [PMID: 29334224 DOI: 10.1021/acs.joc.7b02962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we delineate a novel route for the diastereoselective construction of diversely substituted N-heterocyclic ring systems as valuable scaffolds for natural products and pharmaceuticals, starting from an easily accessible prochiral α-phenyl-β-enamino ester. The reaction sequence relies on the unexplored reactivity of α-phenyl-β-enamino ester as a nucleophilic partner in the Mitsunobu reaction to forge the N-tethered alkene-alcohol/thiol/amine intermediate, which was subjected to an intramolecular hetero-Michael addition reaction under mild conditions to furnish the respective N-heterocyclic compounds embedded with an exocyclic chiral center in high yields and excellent diastereoselectivities. The methodology is amenable for a broad range of substrates based on a metal-free approach.
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Affiliation(s)
- Hina P A Khan
- Department of Organic Chemistry, Indian Institute of Science , Bengaluru 560012, India
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64
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Li H, Huang S, Wang Y, Huo C. Oxidative Dehydrogenative [2 + 3]-Cyclization of Glycine Esters with Aziridines Leading to Imidazolidines. Org Lett 2017; 20:92-95. [DOI: 10.1021/acs.orglett.7b03448] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Haitao Li
- Key Laboratory of Eco-Environment-Related
Polymer Materials of Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Songhai Huang
- Key Laboratory of Eco-Environment-Related
Polymer Materials of Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yajun Wang
- Key Laboratory of Eco-Environment-Related
Polymer Materials of Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Congde Huo
- Key Laboratory of Eco-Environment-Related
Polymer Materials of Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
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65
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Zhou Y, Breit B. Rhodium-Catalyzed Asymmetric N−H Functionalization of Quinazolinones with Allenes and Allylic Carbonates: The First Enantioselective Formal Total Synthesis of (−)-Chaetominine. Chemistry 2017; 23:18156-18160. [DOI: 10.1002/chem.201705059] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Yirong Zhou
- Institut für Organische Chemie and Freiburg Institute of Advanced Studies (FRIAS); Albert-Ludwigs-Universität; Alberstr. 21 79104 Freiburg Germany
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education; College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang 330022 China
| | - Bernhard Breit
- Institut für Organische Chemie and Freiburg Institute of Advanced Studies (FRIAS); Albert-Ludwigs-Universität; Alberstr. 21 79104 Freiburg Germany
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66
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Abstract
Oxidative cyclizations are important transformations that occur widely during natural product biosynthesis. The transformations from acyclic precursors to cyclized products can afford morphed scaffolds, structural rigidity, and biological activities. Some of the most dramatic structural alterations in natural product biosynthesis occur through oxidative cyclization. In this Review, we examine the different strategies used by nature to create new intra(inter)molecular bonds via redox chemistry. This Review will cover both oxidation- and reduction-enabled cyclization mechanisms, with an emphasis on the former. Radical cyclizations catalyzed by P450, nonheme iron, α-KG-dependent oxygenases, and radical SAM enzymes are discussed to illustrate the use of molecular oxygen and S-adenosylmethionine to forge new bonds at unactivated sites via one-electron manifolds. Nonradical cyclizations catalyzed by flavin-dependent monooxygenases and NAD(P)H-dependent reductases are covered to show the use of two-electron manifolds in initiating cyclization reactions. The oxidative installations of epoxides and halogens into acyclic scaffolds to drive subsequent cyclizations are separately discussed as examples of "disappearing" reactive handles. Last, oxidative rearrangement of rings systems, including contractions and expansions, will be covered.
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Affiliation(s)
- Man-Cheng Tang
- Department of Chemical and Biomolecular Engineering, Department of Chemistry and Biochemistry, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Yi Zou
- Department of Chemical and Biomolecular Engineering, Department of Chemistry and Biochemistry, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Kenji Watanabe
- Department of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Christopher T. Walsh
- Stanford University Chemistry, Engineering, and Medicine for Human Health (ChEM-H), Stanford University, 443 Via Ortega, Stanford, CA 94305
| | - Yi Tang
- Department of Chemical and Biomolecular Engineering, Department of Chemistry and Biochemistry, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA
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67
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Mari G, Crescentini LD, Favi G, Lombardi P, Fiorillo G, Giorgi G, Mantellini F. Heteroring-Annulated Pyrrolino-Tetrahydroberberine Analogues. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Giacomo Mari
- Biomolecular Science Department; Organic Chemistry and Organic Natural Compounds Section; University of Urbino “Carlo Bo”; Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Lucia De Crescentini
- Biomolecular Science Department; Organic Chemistry and Organic Natural Compounds Section; University of Urbino “Carlo Bo”; Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Gianfranco Favi
- Biomolecular Science Department; Organic Chemistry and Organic Natural Compounds Section; University of Urbino “Carlo Bo”; Via I Maggetti 24 61029 Urbino (PU) Italy
| | - Paolo Lombardi
- Naxospharma; Via Giuseppe Di Vittorio 70 20026 Novate Milanese (MI) Italy
| | - Gaetano Fiorillo
- Naxospharma; Via Giuseppe Di Vittorio 70 20026 Novate Milanese (MI) Italy
| | - Gianluca Giorgi
- Department of Chemistry; University of Siena; Via Aldo Moro 53100 Siena Italy
| | - Fabio Mantellini
- Biomolecular Science Department; Organic Chemistry and Organic Natural Compounds Section; University of Urbino “Carlo Bo”; Via I Maggetti 24 61029 Urbino (PU) Italy
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68
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Liang K, Xia C. Recent Advances of Transition Metal-Mediated Oxidative Radical Reactions in Total Synthesis of Indole Alkaloids. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600777] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kangjiang Liang
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University); Ministry of Education, Yunnan University; Kunming Yunnan 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany; Chinese Academy of Sciences; Kunming Yunnan 650201 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University); Ministry of Education, Yunnan University; Kunming Yunnan 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany; Chinese Academy of Sciences; Kunming Yunnan 650201 China
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69
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Wang KB, Li DH, Bao Y, Cao F, Wang WJ, Lin C, Bin W, Bai J, Pei YH, Jing YK, Yang D, Li ZL, Hua HM. Structurally Diverse Alkaloids from the Seeds of Peganum harmala. JOURNAL OF NATURAL PRODUCTS 2017; 80:551-559. [PMID: 28128938 PMCID: PMC5518681 DOI: 10.1021/acs.jnatprod.6b01146] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Investigation of the alkaloids from Peganum harmala seeds yielded two pairs of unique racemic pyrroloindole alkaloids, (±)-peganines A-B (1-2); two rare thiazole derivatives, peganumals A-B (3-4); six new β-carboline alkaloids, pegaharmines F-K (5-10); and 12 known analogues. Their structures, including stereochemistry, were elucidated through spectroscopic analyses, quantum chemistry calculations, and single-crystal X-ray diffraction. Notably, the incorporation of pyrrole and indole moieties in peganines A-B, thiazole fragments in peganumals A-B, and a C-1 α,β-unsaturated ester motif in pegaharmine F (5) are all rare, and their presence in the genus Peganum were demonstrated for the first time. All isolates were tested for antiproliferative activities against the HL-60, PC-3, and SGC-7901 cancer cell lines, and compounds 9, 11, 12, and 13 exhibited moderate cytotoxicity against HL-60 cancer cell lines with IC50 values in the range of 4.36-9.25 μM.
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Affiliation(s)
- Kai-Bo Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Da-Hong Li
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Yu Bao
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Fei Cao
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, People’s Republic of China
| | - Wen-Jing Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Clement Lin
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Wen Bin
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Jiao Bai
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Yue-Hu Pei
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Yong-Kui Jing
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Danzhou Yang
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Zhan-Lin Li
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
| | - Hui-Ming Hua
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning People’s Republic of China
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70
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Zhang D, Zhao L, Wang L, Fang X, Zhao J, Wang X, Li L, Liu H, Wei Y, You X, Cen S, Yu L. Griseofulvin Derivative and Indole Alkaloids from Penicillium griseofulvum CPCC 400528. JOURNAL OF NATURAL PRODUCTS 2017; 80:371-376. [PMID: 28117586 DOI: 10.1021/acs.jnatprod.6b00829] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new griseofulvin derivative, 4'-demethoxy-4'-N-isopentylisogriseofulvin (1), three new indole alkaloids, 2-demethylcyclopiamide E (2), 2-demethylsperadine F (3), and clopiamine C (4), and five known metabolites (5-9) were isolated from Penicillium griseofulvum CPCC 400528. Compound 1 is the first reported griseofulvin analogue with an N-isopentane group and the first example of a naturally occurring N-containing griseofulvin analogue. Their structures and absolute configurations were elucidated through extensive spectroscopic analyses, calculated ECD, and single-crystal X-ray diffraction (Cu Kα). The possible biogenetic pathway of 1-3 was proposed. Compounds 1, 2, and 5 exhibited anti-HIV activities with IC50 values of 33.2, 20.5, and 12.6 μM, respectively.
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Affiliation(s)
- Dewu Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Lili Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Lining Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
- College of Herbal Medicine, Tianjin University of Traditional Chinese Medicines , 88 Yuquan Road, Tianjin 300193, People's Republic of China
| | - Xiaomei Fang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Jianyuan Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Xinwei Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Li Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Xian Nong Tan Street, Beijing 100050, People's Republic of China
| | - Hongyu Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Yuzhen Wei
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Xuefu You
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Shan Cen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
| | - Liyan Yu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , 1 Tian Tan Xi Li, Beijing 100050, People's Republic of China
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71
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Cheng Z, Lou L, Liu D, Li X, Proksch P, Yin S, Lin W. Versiquinazolines A-K, Fumiquinazoline-Type Alkaloids from the Gorgonian-Derived Fungus Aspergillus versicolor LZD-14-1. JOURNAL OF NATURAL PRODUCTS 2016; 79:2941-2952. [PMID: 27933898 DOI: 10.1021/acs.jnatprod.6b00801] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Eleven fumiquinazoline-type alkaloids, namely, versiquinazolines A-K (1-11), along with cottoquinazolines B-D, were isolated from the gorgonian-derived fungus Aspergillus versicolor LZD-14-1. Their structures were determined by extensive analyses of the spectroscopic data (1D and 2D NMR, HRESIMS), in addition to the experimental and calculated ECD data and X-ray single-crystal diffraction analysis for the assignments of the absolute configurations. Versiquinazolines A, B, and F (1, 2, and 6), bearing a methanediamine or an aminomethanol unit and representing a unique subtype of fumiquinazolines, were found from nature for the first time. Possible biogenetic relationships of the versiquinazolines are postulated. In addition, the structures of cottoquinazolines B (12), D (13), and C (14) should be revised to the enantiomers. Compounds 1, 2, 7, and 11 exhibited inhibitory activities against thioredoxin reductase (IC50 values ranging from 12 to 20 μM).
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Affiliation(s)
- Zhongbin Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, Institute of Ocean Research, Peking University , Beijing, 100191, People's Republic of China
| | - Lanlan Lou
- School of Pharmaceutical Sciences, Sun Yat-sen University , Guangzhou, Guangdong 510006, People's Republic of China
| | - Dong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Institute of Ocean Research, Peking University , Beijing, 100191, People's Republic of China
| | - Xiaodan Li
- State Key Laboratory of Natural and Biomimetic Drugs, Institute of Ocean Research, Peking University , Beijing, 100191, People's Republic of China
| | - Peter Proksch
- Institute für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität Düsseldorf , 40225 Düsseldorf, Germany
| | - Sheng Yin
- School of Pharmaceutical Sciences, Sun Yat-sen University , Guangzhou, Guangdong 510006, People's Republic of China
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Institute of Ocean Research, Peking University , Beijing, 100191, People's Republic of China
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72
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Penicitroamide, an Antimicrobial Metabolite with High Carbonylization from the Endophytic Fungus Penicillium sp. (NO. 24). Molecules 2016; 21:molecules21111438. [PMID: 27801845 PMCID: PMC6274507 DOI: 10.3390/molecules21111438] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/21/2016] [Accepted: 10/25/2016] [Indexed: 11/17/2022] Open
Abstract
Penicitroamide (1), a new metabolite with a new framework, was isolated from the ethyl acetate extract of the PDB (Potato Dextrose Broth) medium of Penicillium sp. (NO. 24). The endophytic fungus Penicillium sp. (NO. 24) was obtained from the healthy leaves of Tapiscia sinensis Oliv. The structure of penicitroamide (1) features a bicyclo[3.2.1]octane core unit with a high degree of carbonylization (four carbonyl groups and one enol group). The chemical structure of penicitroamide (1) was elucidated by analysis of 1D-, 2D-NMR and MS data. In bioassays, penicitroamide (1) displayed antibacterial potency against two plant pathogens, Erwinia carotovora subsp. Carotovora (Jones) Bersey, et al. and Sclerotium rolfsii Sacc. with MIC50 at 45 and 50 μg/mL. Compound 1 also showed 60% lethality against brine shrimp at 10 μg/mL. Penicitroamide (1) exhibited no significant activity against A549, Caski, HepG2 and MCF-7 cells with IC50 > 50 μg/mL. Finally, the possible biosynthetic pathway of penicitroamide (1) was discussed.
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73
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Shen L, Zhu L, Luo Q, Li XW, Xi JQ, Kong GM, Song YC. Fumigaclavine I, a new alkaloid isolated from endophyte Aspergillus terreus. Chin J Nat Med 2016; 13:937-41. [PMID: 26721713 DOI: 10.1016/s1875-5364(15)30101-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Indexed: 11/28/2022]
Abstract
The present study was designed to isolate and purify chemical constituents from solid culture of endophyte Aspergillus terreus LQ, using silica gel column chromatography, gel filtration with Sephadex LH-20, and HPLC. Fumigaclavine I (1), a new alkaloid, was obtained, along with seven known compounds, including fumigaclavine C (2), rhizoctonic acid (3), monomethylsulochrin (4), chaetominine (5), spirotryprostatin A (6), asperfumoid (7), and lumichrome (8). The structure of compound 1 was elucidated by various spectroscopic analyses (UV, MS, 1D and 2D NMR). The in vitro cytotoxicity of compound 1 was determined by MTT assay in human hepatocarcinoma cell line SMMC-7721, showing weaker cytotoxicity, compared with cisplatin, a clinically used cancer chemotherapeutic agent.
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Affiliation(s)
- Li Shen
- Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China.
| | - Li Zhu
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Qian Luo
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Xiao-Wen Li
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Ju-Qun Xi
- Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou 225001, China
| | - Gui-Mei Kong
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou 225001, China
| | - Yong-Chun Song
- Institute of Functional Biomolecules, Nanjing University, Nanjing 210046, China
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74
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Zhang YP, Jiao RH, Lu YH, Yao LY. Improvement of chaetominine production by tryptophan feeding and medium optimization in submerged fermentation of Aspergillus fumigatus CY018. BIORESOUR BIOPROCESS 2016. [DOI: 10.1186/s40643-016-0117-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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75
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Reddy RS, Lagishetti C, Chen S, Kiran INC, He Y. Synthesis of Dihydrophenanthridines and Oxoimidazolidines from Anilines and Ethylglyoxylate via Aza Diels–Alder Reaction of Arynes and KF-Induced Annulation. Org Lett 2016; 18:4546-9. [DOI: 10.1021/acs.orglett.6b02186] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. Santhosh Reddy
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - Chandraiah Lagishetti
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - Shuo Chen
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - I. N. Chaithanya Kiran
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
| | - Yun He
- School of Pharmaceutical
Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P. R. China
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76
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Li G, Huang L, Xu J, Sun W, Xie J, Hong L, Wang R. Sodium Iodide/Hydrogen Peroxide-Mediated Oxidation/Lactonization for the Construction of Spirocyclic Oxindole-Lactones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600441] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guofeng Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Liwu Huang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Jiecheng Xu
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Junqiu Xie
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Liang Hong
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Rui Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; Lanzhou University; Lanzhou 730000 People's Republic of China
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77
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Xie F, Li XB, Zhou JC, Xu QQ, Wang XN, Yuan HQ, Lou HX. Secondary metabolites from Aspergillus fumigatus, an endophytic fungus from the liverwort Heteroscyphus tener (Steph.) Schiffn. Chem Biodivers 2016; 12:1313-21. [PMID: 26363876 DOI: 10.1002/cbdv.201400317] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Indexed: 01/05/2023]
Abstract
Three new metabolites, asperfumigatin (1), isochaetominine (10), and 8'-O-methylasterric acid (21), together with nineteen known compounds, were obtained from the culture of Aspergillus fumigatus, an endophytic fungus from the Chinese liverwort Heteroscyphus tener (Steph.) Schiffn. Their structures were established by extensive analysis of the spectroscopic data. The absolute configurations of 1 and 10 were determined by analysis of their respective CD spectra. Cytotoxicity of these isolates against four human cancer cell lines was also determined.
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Affiliation(s)
- Fei Xie
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China (phone: +86-531-88382012; fax: +86-531-88382548)
| | - Xiao-Bin Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China (phone: +86-531-88382012; fax: +86-531-88382548)
| | - Jin-Chuan Zhou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China (phone: +86-531-88382012; fax: +86-531-88382548)
| | - Qing-Qing Xu
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Xiao-Ning Wang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China (phone: +86-531-88382012; fax: +86-531-88382548)
| | - Hui-Qing Yuan
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Hong-Xiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, P. R. China (phone: +86-531-88382012; fax: +86-531-88382548).
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78
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Qin Z, Liu W, Wang D, He Z. Phosphine-Catalyzed (4 + 1) Annulation of o-Hydroxyphenyl and o-Aminophenyl Ketones with Allylic Carbonates: Syntheses and Transformations of 3-Hydroxy-2,3-Disubstituted Dihydrobenzofurans and Indolines. J Org Chem 2016; 81:4690-700. [DOI: 10.1021/acs.joc.6b00596] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zifeng Qin
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
| | - Wei Liu
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
| | - Danyang Wang
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
| | - Zhengjie He
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
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79
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Liu C, Jiao R, Yao L, Zhang Y, Lu Y, Tan R. Adsorption characteristics and preparative separation of chaetominine from Aspergillus fumigatus mycelia by macroporous resin. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1015-1016:135-141. [DOI: 10.1016/j.jchromb.2016.02.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 02/17/2016] [Accepted: 02/17/2016] [Indexed: 11/28/2022]
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80
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Yao J, Jiao R, Liu C, Zhang Y, Yu W, Lu Y, Tan R. Assessment of the Cytotoxic and Apoptotic Eἀects of Chaetominine in a Human Leukemia Cell Line. Biomol Ther (Seoul) 2016; 24:147-55. [PMID: 26902083 PMCID: PMC4774495 DOI: 10.4062/biomolther.2015.093] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 11/30/2015] [Accepted: 01/07/2016] [Indexed: 01/01/2023] Open
Abstract
Chaetominine is a quinazoline alkaloid originating from the endophytic fungus Aspergillus fumigatus CY018. In this study, we showed evidence that chaetominine has cytotoxic and apoptotic effects on human leukemia K562 cells and investigated the pathway involved in chaetominine-induced apoptosis in detail. Chaetominine inhibited K562 cell growth, with an IC50 value of 35 nM, but showed little inhibitory effect on the growth of human peripheral blood mononuclear cells. The high apoptosis rates, morphological apoptotic features, and DNA fragmentation caused by chaetominine indicated that the cytotoxicity was partially caused by its pro-apoptotic effect. Under chaetominine treatment, the Bax/Bcl-2 ratio was upregulated (from 0.3 to 8), which was followed by a decrease in mitochondrial membrane potential, release of cytochrome c from mitochondria into the cytosol, and stimulation of Apaf-1. Furthermore, activation of caspase-9 and caspase-3, which are the main executers of the apoptotic process, was observed. These results demonstrated that chaetominine induced cell apoptosis via the mitochondrial pathway. Chaetominine inhibited K562 cell growth and induced apoptotic cell death through the intrinsic pathway, which suggests that chaetominine might be a promising therapeutic for leukemia.
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Affiliation(s)
- Jingyun Yao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai 200237, PR China
| | - Ruihua Jiao
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
| | - Changqing Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai 200237, PR China
| | - Yupeng Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai 200237, PR China
| | - Wanguo Yu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai 200237, PR China
| | - Yanhua Lu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai 200237, PR China
| | - Renxiang Tan
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
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81
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Petkovic M, Nasufovic V, Djukanovic D, Vujosevic ZT, Jadranin M, Matovic R, Savic V. Cyclative Cascades of Allenamides Derived from Amino Acids: Synthesis of Annulated Indoxyl Derivatives. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600067] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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82
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Mao ZY, Geng H, Zhang TT, Ruan YP, Ye JL, Huang PQ. Stereodivergent and enantioselective total syntheses of isochaetominines A–C and four pairs of isochaetominine C enantiomers: a six-step approach. Org Chem Front 2016. [DOI: 10.1039/c5qo00298b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first total syntheses of (−)-isochaetominines A–C and eight 2,3-cis-stereoisomers of isochaetominine C, and structural revisions of (−)-pseudofischerine and (−)-aniquinazoline D.
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Affiliation(s)
- Zhong-Yi Mao
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Hui Geng
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Tian-Tian Zhang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Yuan-Ping Ruan
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Jian-Liang Ye
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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83
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Shinde MH, Kshirsagar UA. A copper catalyzed multicomponent cascade redox reaction for the synthesis of quinazolinones. RSC Adv 2016. [DOI: 10.1039/c6ra10997g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A copper catalyzed multicomponent cascade redox reaction for the synthesis of various quinazolinones starting from easily available 2-bromobenzamides, benzylic alcohols and sodium azide as a nitrogen source has been developed.
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Affiliation(s)
- Mahesh H. Shinde
- Department of Chemistry Savitribai Phule Pune University (Formerly: University of Pune)
- Pune-411007
- India
| | - Umesh A. Kshirsagar
- Department of Chemistry Savitribai Phule Pune University (Formerly: University of Pune)
- Pune-411007
- India
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84
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Sacramento CQ, Marttorelli A, Fintelman-Rodrigues N, de Freitas CS, de Melo GR, Rocha MEN, Kaiser CR, Rodrigues KF, da Costa GL, Alves CM, Santos-Filho O, Barbosa JP, Souza TML. Aureonitol, a Fungi-Derived Tetrahydrofuran, Inhibits Influenza Replication by Targeting Its Surface Glycoprotein Hemagglutinin. PLoS One 2015; 10:e0139236. [PMID: 26462111 PMCID: PMC4603893 DOI: 10.1371/journal.pone.0139236] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 09/10/2015] [Indexed: 11/24/2022] Open
Abstract
The influenza virus causes acute respiratory infections, leading to high morbidity and mortality in groups of patients at higher risk. Antiviral drugs represent the first line of defense against influenza, both for seasonal infections and pandemic outbreaks. Two main classes of drugs against influenza are in clinical use: M2-channel blockers and neuraminidase inhibitors. Nevertheless, because influenza strains that are resistant to these antivirals have been described, the search for novel compounds with different mechanisms of action is necessary. Here, we investigated the anti-influenza activity of a fungi-derived natural product, aureonitol. This compound inhibited influenza A and B virus replication. This compound was more effective against influenza A(H3N2), with an EC50 of 100 nM. Aureonitol cytoxicity was also very low, with a CC50 value of 1426 μM. Aureonitol inhibited influenza hemagglutination and, consequently, significantly impaired virus adsorption. Molecular modeling studies revealed that aureonitol docked in the sialic acid binding site of hemagglutinin, forming hydrogen bonds with highly conserved residues. Altogether, our results indicate that the chemical structure of aureonitol is promising for future anti-influenza drug design.
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Affiliation(s)
- Carolina Q. Sacramento
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andressa Marttorelli
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natalia Fintelman-Rodrigues
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Caroline S. de Freitas
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gabrielle R. de Melo
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marco E. N. Rocha
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Química de Produtos Naturais 5, Farmanguinhos, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos R. Kaiser
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Katia F. Rodrigues
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gisela L. da Costa
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cristiane M. Alves
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Osvaldo Santos-Filho
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jussara P. Barbosa
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thiago Moreno L. Souza
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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Wang P, Zhao S, Liu Y, Ding W, Qiu F, Xu J. Asperginine, an Unprecedented Alkaloid from the Marine-derived Fungus Aspergillus sp. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Asperginine (1), an alkaloid possessing a rare skeleton, was isolated from the cultural broth of the marine fungus Aspergillus sp. (Z-4) isolated from the gut of the marine isopod Ligia oceanica. The planar structure and relative configuration of 1 was determined by analysis of NMR and mass spectral data. Its absolute configuration was elucidated by Marfey's method, together with NOESY correlations of key hydrogen atoms. The cytotoxicity against prostate cancer PC3 and human HCT116 was assayed by the MTT method. Unfortunately, asperginine did not show any activity.
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Affiliation(s)
- Pinmei Wang
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, PR China
| | - Shizhe Zhao
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, PR China
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Ying Liu
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, PR China
| | - Wanjing Ding
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, PR China
| | - Feng Qiu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Jinzhong Xu
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, PR China
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Liao L, You M, Chung BK, Oh DC, Oh KB, Shin J. Alkaloidal metabolites from a marine-derived Aspergillus sp. fungus. JOURNAL OF NATURAL PRODUCTS 2015; 78:349-354. [PMID: 25581396 DOI: 10.1021/np500683u] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fumiquinazoline S (1), a new quinazoline-containing alkaloid, and the known fumiquinazolines F (6) and L (7) of the same structural class were isolated from the solid-substrate culture of an Aspergillus sp. fungus collected from marine-submerged wood. In addition, isochaetominines A-C (2-4) and 14-epi-isochaetominine C (5), new alkaloids possessing an unusual amino acid-based tetracyclic core framework related to the fumiquinazolines, were isolated from the same fungal strain. The structures of these compounds were determined by combined spectroscopic methods, and the absolute configurations were assigned by NOESY, ROESY, and advanced Marfey's analyses along with biogenetic considerations. The new compounds exhibited weak inhibition against Na(+)/K(+)-ATPase.
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Affiliation(s)
- Lijuan Liao
- †Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Minjung You
- †Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Beom Koo Chung
- ‡Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-921, Korea
| | - Dong-Chan Oh
- †Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Ki-Bong Oh
- ‡Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-921, Korea
| | - Jongheon Shin
- †Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
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Gupta AP, Pandotra P, Kushwaha M, Khan S, Sharma R, Gupta S. Alkaloids: A Source of Anticancer Agents from Nature. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63462-7.00009-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Kshirsagar UA. Recent developments in the chemistry of quinazolinone alkaloids. Org Biomol Chem 2015; 13:9336-52. [DOI: 10.1039/c5ob01379h] [Citation(s) in RCA: 191] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This review focuses on the recent advances in the chemistry of quinazolinone alkaloids which covers the newly isolated quinazolinone alkaloids with their biological activities and the recently reported total syntheses of quinazolinone alkaloids from 2006 to 2015.
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Affiliation(s)
- U. A. Kshirsagar
- Department of Chemistry
- Savitribai Phule Pune University (Formerly: University of Pune)
- Pune 411007
- India
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Liang WL, Le X, Li HJ, Yang XL, Chen JX, Xu J, Liu HL, Wang LY, Wang KT, Hu KC, Yang DP, Lan WJ. Exploring the chemodiversity and biological activities of the secondary metabolites from the marine fungus Neosartorya pseudofischeri. Mar Drugs 2014; 12:5657-76. [PMID: 25421322 PMCID: PMC4245550 DOI: 10.3390/md12115657] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 11/12/2014] [Accepted: 11/17/2014] [Indexed: 12/18/2022] Open
Abstract
The production of fungal metabolites can be remarkably influenced by various cultivation parameters. To explore the biosynthetic potentials of the marine fungus, Neosartorya pseudofischeri, which was isolated from the inner tissue of starfish Acanthaster planci, glycerol-peptone-yeast extract (GlyPY) and glucose-peptone-yeast extract (GluPY) media were used to culture this fungus. When cultured in GlyPY medium, this fungus produced two novel diketopiperazines, neosartins A and B (1 and 2), together with six biogenetically-related known diketopiperazines,1,2,3,4-tetrahydro-2,3-dimethyl-1,4-dioxopyrazino[1,2-a]indole (3), 1,2,3,4-tetrahydro-2-methyl-3-methylene-1,4-dioxopyrazino[1,2-a]indole (4), 1,2,3,4-tetrahydro-2-methyl-1,3,4-trioxopyrazino[1,2-a] indole (5), 6-acetylbis(methylthio)gliotoxin (10), bisdethiobis(methylthio)gliotoxin (11), didehydrobisdethiobis(methylthio)gliotoxin (12) and N-methyl-1H-indole-2-carboxamide (6). However, a novel tetracyclic-fused alkaloid, neosartin C (14), a meroterpenoid, pyripyropene A (15), gliotoxin (7) and five known gliotoxin analogues, acetylgliotoxin (8), reduced gliotoxin (9), 6-acetylbis(methylthio)gliotoxin (10), bisdethiobis(methylthio) gliotoxin (11) and bis-N-norgliovictin (13), were obtained when grown in glucose-containing medium (GluPY medium). This is the first report of compounds 3, 4, 6, 9, 10 and 12 as naturally occurring. Their structures were determined mainly by MS, 1D and 2D NMR data. The possible biosynthetic pathways of gliotoxin-related analogues and neosartin C were proposed. The antibacterial activity of compounds 2–14 and the cytotoxic activity of compounds 4, 5 and 7–13 were evaluated. Their structure-activity relationships are also preliminarily discussed.
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Affiliation(s)
- Wan-Ling Liang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Xiu Le
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Hou-Jin Li
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Xiang-Ling Yang
- Guangdong Institute of Gastroenterology, Guangzhou 510655, China.
| | - Jun-Xiong Chen
- Guangdong Institute of Gastroenterology, Guangzhou 510655, China.
| | - Jun Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Huan-Liang Liu
- Guangdong Institute of Gastroenterology, Guangzhou 510655, China.
| | - Lai-You Wang
- Institute of Chinese Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Kun-Teng Wang
- Institute of Chinese Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Kun-Chao Hu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - De-Po Yang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Wen-Jian Lan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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Luo SP, Peng QL, Xu CP, Wang AE, Huang PQ. Bio-inspired Step-Economical, Redox-Economical and Protecting-Group-Free Enantioselective Total Syntheses of (−)-Chaetominine and Analogues. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400413] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Ghosh AK, Chen ZH. An intramolecular cascade cyclization of 2-aryl indoles: efficient methods for the construction of 2,3-functionalized indolines and 3-indolinones. Org Biomol Chem 2014; 12:3567-71. [PMID: 24788461 PMCID: PMC4088936 DOI: 10.1039/c4ob00511b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient intramolecular N/O-nucleophilic cyclization of 2-aryl indoles has been developed to afford the corresponding 2-aza-3-oxaindolines and 3-indolinones in 80-95% yield. The methods provided convenient access to fused imidazo[1,2-c]oxazolidinone, oxazolidine, or tetrahydro-1,3-oxazine cores under mild conditions.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, IN 47907, USA.
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Cytotoxic and antimicrobial activities of endophytic fungi isolated from Bacopa monnieri (L.) Pennell (Scrophulariaceae). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:52. [PMID: 24512530 PMCID: PMC3930298 DOI: 10.1186/1472-6882-14-52] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 02/06/2014] [Indexed: 11/16/2022]
Abstract
Background Endophytes, which reside in plant tissues, have the potential to produce novel metabolites with immense benefits for health industry. Cytotoxic and antimicrobial activities of endophytic fungi isolated from Bacopa monnieri (L.) Pennell were investigated. Methods Endophytic fungi were isolated from the Bacopa monnieri. Extracts from liquid cultures were tested for cytotoxicity against a number of cancer cell lines using the MTT assay. Antimicrobial activity was determined using the micro dilution method. Results 22% of the examined extracts showed potent (IC50 of <20 μg/ml) cytotoxic activity against HCT-116 cell line. 5.5%, 11%, 11% of the extracts were found to be cytotoxic for MCF-7, PC-3, and A-549 cell lines respectively. 33% extracts displayed antimicrobial activity against at least one test organism with MIC value 10–100 μg/ml. The isolate B9_Pink showed the most potent cytotoxic activity for all the cell lines examined and maximum antimicrobial activity against the four pathogens examined which was followed by B19. Conclusions Results indicated the potential for production of bioactive agents from endophytes of Bacopa monnieri.
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Jing C, Xing D, Hu W. Highly diastereoselective synthesis of 3-hydroxy-2,2,3-trisubstituted indolines via intramolecular trapping of ammonium ylides with ketones. Chem Commun (Camb) 2014; 50:951-3. [DOI: 10.1039/c3cc48067d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Xu CP, Luo SP, Wang AE, Huang PQ. Complexity generation by chemical synthesis: a five-step synthesis of (−)-chaetominine from l-tryptophan and its biosynthetic implications. Org Biomol Chem 2014; 12:2859-63. [DOI: 10.1039/c4ob00314d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Peng QL, Luo SP, Xia XE, Liu LX, Huang PQ. The four-step total synthesis of (−)-chaetominine. Chem Commun (Camb) 2014; 50:1986-8. [DOI: 10.1039/c3cc48833k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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