51
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Galloway JD, Mai DN, Baxter RD. Radical Benzylation of Quinones via C–H Abstraction. J Org Chem 2019; 84:12131-12137. [DOI: 10.1021/acs.joc.9b01004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jordan D. Galloway
- Department of Chemistry, Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
| | - Duy N. Mai
- Department of Chemistry, Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
| | - Ryan D. Baxter
- Department of Chemistry, Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
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52
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Synthesis and Antitumor Activity Evaluation of Compounds Based on Toluquinol. Mar Drugs 2019; 17:md17090492. [PMID: 31450731 PMCID: PMC6780176 DOI: 10.3390/md17090492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/14/2019] [Accepted: 08/18/2019] [Indexed: 12/18/2022] Open
Abstract
Encouraged by the promising antitumoral, antiangiogenic, and antilymphangiogenic properties of toluquinol, a set of analogues of this natural product of marine origin was synthesized to explore and evaluate the effects of structural modifications on their cytotoxic activity. We decided to investigate the effects of the substitution of the methyl group by other groups, the introduction of a second substituent, the relative position of the substituents, and the oxidation state. A set of analogues of 2-substituted, 2,3-disubstituted, and 2,6-disubstituted derived from hydroquinone were synthesized. The results revealed that the cytotoxic activity of this family of compounds could rely on the hydroquinone/benzoquinone part of the molecule, whereas the substituents might modulate the interaction of the molecule with their targets, changing either its activity or its selectivity. The methyl group is relevant for the cytotoxicity of toluquinol, since its replacement by other groups resulted in a significant loss of activity, and in general the introduction of a second substituent, preferentially in the para position with respect to the methyl group, was well tolerated. These findings provide guidance for the design of new toluquinol analogues with potentially better pharmacological properties.
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53
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Roose BW, Christianson DW. Structural Basis of Tryptophan Reverse N-Prenylation Catalyzed by CymD. Biochemistry 2019; 58:3232-3242. [PMID: 31251043 DOI: 10.1021/acs.biochem.9b00399] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Indole prenyltransferases catalyze the prenylation of l-tryptophan (l-Trp) and other indoles to produce a diverse set of natural products in bacteria, fungi, and plants, many of which possess useful biological properties. Among this family of enzymes, CymD from Salinispora arenicola catalyzes the reverse N1 prenylation of l-Trp, an unusual reaction given the poor nucleophilicity of the indole nitrogen. CymD utilizes dimethylallyl diphosphate (DMAPP) as the prenyl donor, catalyzing the dissociation of the diphosphate leaving group followed by nucleophilic attack of the indole nitrogen at the tertiary carbon of the dimethylallyl cation. To better understand the structural basis of selective indole N-alkylation reactions in biology, we have determined the X-ray crystal structures of CymD, the CymD-l-Trp complex, and the CymD-l-Trp-DMSPP complex (DMSPP is dimethylallyl S-thiolodiphosphate, an unreactive analogue of DMAPP). The orientation of l-Trp with respect to DMSPP reveals how the active site contour of CymD serves as a template to direct the reverse prenylation of the indole nitrogen. Comparison to PriB, a C6 bacterial indole prenyltransferase, offers further insight regarding the structural basis of regioselective indole prenylation. Isothermal titration calorimetry measurements indicate a synergistic relationship between l-Trp and DMSPP binding. Finally, activity assays demonstrate the selectivity of CymD for l-Trp and indole as prenyl acceptors. Collectively, these data establish a foundation for understanding and engineering the regioselectivity of indole prenylation by members of the prenyltransferase protein family.
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Affiliation(s)
- Benjamin W Roose
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - David W Christianson
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
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54
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Bandari C, Scull EM, Bavineni T, Nimmo SL, Gardner ED, Bensen RC, Burgett AW, Singh S. FgaPT2, a biocatalytic tool for alkyl-diversification of indole natural products. MEDCHEMCOMM 2019; 10:1465-1475. [PMID: 31534661 PMCID: PMC6748273 DOI: 10.1039/c9md00177h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/05/2019] [Indexed: 01/02/2023]
Abstract
Demonstration of FgaPT2 catalyzed alkyl-diversification of indole containing natural products.
Aromatic prenyltransferases from natural product biosynthetic pathways display relaxed specificity for their aromatic substrates. While a growing body of evidence suggests aromatic prenyltransferases to be more tolerant towards their alkyl-donor substrates, most studies aimed at probing their donor-substrate specificity are limited to only a small set of alkyl pyrophosphate donors, restricting their broader utility as biocatalysts for synthetic applications. Here, we assess the donor substrate specificity of an l-tryptophan C4-prenyltransferase, also known as C4-dimethylallyltryptophan synthase, FgaPT2 from Aspergillus fumigatus, using an array of 34 synthetic unnatural alkyl-pyrophosphate analogues, and demonstrate FgaPT2 can catalyze the transfer of 25 of the 34 non-native alkyl groups from their corresponding synthetic alkyl-pyrophosphate analogues at N1, C3, C4 and C5 position of tryptophan in a normal and reverse manner. The kinetic studies and regio-chemical analysis of the alkyl-l-tryptophan products suggest that the alkyl-donor transfer by FgaPT2 is a function of the stability of the carbocation and the steric factors in the active site of the enzyme. Further, to demonstrate the biocatalytic utility of FgaPT2, this study also highlights the FgaPT2-catalyzed synthesis of a small set of alkyl-diversified indolocarbazole analogues. These results reveal FgaPT2 to be more tolerant to diverse non-native alkyl-donor substrates beyond their known acceptor substrate promiscuity and set the stage for its development as a novel biocatalytic tool for the differential alkylation of natural products for drug discovery and other synthetic applications.
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Affiliation(s)
- Chandrasekhar Bandari
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Erin M Scull
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Tejaswi Bavineni
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Susan L Nimmo
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Eric D Gardner
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Ryan C Bensen
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Anthony W Burgett
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Shanteri Singh
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
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55
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Wang Q, Wang B, Deng H, Shangguan Y, Lin Y, Zhang Y, Zhang Z, Xiao Y, Guo H, Zhang C. Silver-Catalyzed Three-Component Difunctionalization of Alkenes via Radical Pathways: Access to CF3-Functionalized Alkyl-Substituted 1,4-Naphthoquinone Derivatives. J Org Chem 2018; 84:1006-1014. [PMID: 30592606 DOI: 10.1021/acs.joc.8b02997] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qijun Wang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Bo Wang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Hao Deng
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yu Shangguan
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yan Lin
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yaqi Zhang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Zheming Zhang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Cheng Zhang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
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56
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Zhong Z, Zhu W, Liu S, Guan Q, Chen X, Huang W, Wang T, Yang B, Tian J. Molecular Characterization of a Geranyl Diphosphate-Specific Prenyltransferase Catalyzing Stilbenoid Prenylation from Morus alba. PLANT & CELL PHYSIOLOGY 2018; 59:2214-2227. [PMID: 30020500 DOI: 10.1093/pcp/pcy138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
Pharmaceutically active compounds from medical plants are attractive as a major source for new drug development. Prenylated stilbenoids with increased lipophilicity are valuable secondary metabolites which possess a wide range of biological activities. So far, many prenylated stilbenoids have been isolated from Morus alba but the enzyme responsible for the crucial prenyl modification remains unknown. In the present study, a stilbenoid-specific prenyltransferase (PT), termed Morus alba oxyresveratrol geranyltransferase (MaOGT), was identified and functionally characterized in vitro. MaOGT recognized oxyresveratrol and geranyl diphosphate (GPP) as natural substrates, and catalyzed oxyresveratrol prenylation. Our results indicated that MaOGT shared common features with other aromatic PTs, e.g. multiple transmembrane regions, conserved functional domains and targeting to plant plastids. This distinct PT represents the first stilbenoid-specific PT accepting GPP as a natural prenyl donor, and could help identify additional functionally varied PTs in moraceous plants. Furthermore, MaOGT might be applied for high-efficiency and large-scale prenylation of oxyresveratrol to produce bioactive compounds for potential therapeutic applications.
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Affiliation(s)
- Zhuoheng Zhong
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Wei Zhu
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Shengzhi Liu
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Qijie Guan
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Xi Chen
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Wei Huang
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Tantan Wang
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Bingxian Yang
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
| | - Jingkui Tian
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, PR China
- Zhejiang-Malaysia Joint Research Center for Traditional Medicine, Zhejiang University, Hangzhou, PR China
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57
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Zhou L, Wang C, Yuan C, Liu H, Zhang C, Guo H. Phosphine-Catalyzed [3 + 2] Annulation of 2-Hydroxy-1,4-naphthaquinones and Allenoate: An Allene–Alkene [3 + 2] Annulation Mechanism Involving Consecutive γ-Addition–Aldol Reaction. Org Lett 2018; 20:6591-6595. [DOI: 10.1021/acs.orglett.8b02947] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Leijie Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Chang Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Chunhao Yuan
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
- School of Chemical Engineering, Taishan Medical University, Taian, Shandong 271016, P. R. China
| | - Honglei Liu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Cheng Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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58
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García PA, Hernández ÁP, San Feliciano A, Castro MÁ. Bioactive Prenyl- and Terpenyl-Quinones/Hydroquinones of Marine Origin †. Mar Drugs 2018; 16:E292. [PMID: 30134616 PMCID: PMC6165040 DOI: 10.3390/md16090292] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/15/2018] [Accepted: 08/17/2018] [Indexed: 01/05/2023] Open
Abstract
The sea is a rich source of biological active compounds, among which terpenyl-quinones/hydroquinones constitute a family of secondary metabolites with diverse pharmacological properties. The chemical diversity and bioactivity of those isolated from marine organisms in the last 10 years are summarized in this review. Aspects related to synthetic approaches towards the preparation of improved bioactive analogues from inactive terpenoids are also outlined.
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Affiliation(s)
- Pablo A García
- Department of Pharmaceutical Sciences, Pharmaceutical Chemistry Section, CIETUS/IBSAL, Faculty of Pharmacy, University of Salamanca, E-37007 Salamanca, Spain.
| | - Ángela P Hernández
- Department of Pharmaceutical Sciences, Pharmaceutical Chemistry Section, CIETUS/IBSAL, Faculty of Pharmacy, University of Salamanca, E-37007 Salamanca, Spain.
| | - Arturo San Feliciano
- Department of Pharmaceutical Sciences, Pharmaceutical Chemistry Section, CIETUS/IBSAL, Faculty of Pharmacy, University of Salamanca, E-37007 Salamanca, Spain.
| | - Mª Ángeles Castro
- Department of Pharmaceutical Sciences, Pharmaceutical Chemistry Section, CIETUS/IBSAL, Faculty of Pharmacy, University of Salamanca, E-37007 Salamanca, Spain.
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59
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Yu W, Hjerrild P, Jacobsen KM, Tobiesen HN, Clemmensen L, Poulsen TB. A Catalytic Oxidative Quinone Heterofunctionalization Method: Synthesis of Strongylophorine-26. Angew Chem Int Ed Engl 2018; 57:9805-9809. [DOI: 10.1002/anie.201805580] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Wanwan Yu
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Per Hjerrild
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Kristian M. Jacobsen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Henriette N. Tobiesen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Line Clemmensen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Thomas B. Poulsen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
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60
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Yu W, Hjerrild P, Jacobsen KM, Tobiesen HN, Clemmensen L, Poulsen TB. A Catalytic Oxidative Quinone Heterofunctionalization Method: Synthesis of Strongylophorine-26. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805580] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wanwan Yu
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Per Hjerrild
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Kristian M. Jacobsen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Henriette N. Tobiesen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Line Clemmensen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Thomas B. Poulsen
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
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61
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Maristem—Stem Cells of Marine/Aquatic Invertebrates: From Basic Research to Innovative Applications. SUSTAINABILITY 2018. [DOI: 10.3390/su10020526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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62
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Zhivetyeva S, Tretyakov E, Bagryanskaya I. Synthesis of novel phosphonium betaines and bis-betaines derived from hexafluoro-1,4-naphthoquinone. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2017.11.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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63
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Li GL, Guo WJ, Wang GB, Wang RR, Hou YX, Liu K, Liu Y, Wang W. Sterols from the Green Alga Ulva australis. Mar Drugs 2017; 15:md15100299. [PMID: 28956835 PMCID: PMC5666407 DOI: 10.3390/md15100299] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 09/25/2017] [Accepted: 09/27/2017] [Indexed: 12/20/2022] Open
Abstract
Three new sterols, (24R)-5,28-stigmastadiene-3β,24-diol-7-one (1), (24S)-5,28-stigmastadiene-3β,24-diol-7-one (2), and 24R and 24S-vinylcholesta-3β,5α,6β,24-tetraol (3), together with three known sterols (4–6) were isolated from the green alga Ulva australis. The structures of the new compounds (1–3) were elucidated through 1D and 2D nuclear magnetic resonance spectroscopy as well as mass spectrometry. Compounds 4–6 were identified as isofucoterol (4), 24R,28S and 24S,28R-epoxy-24-ethylcholesterol (5), and (24S)-stigmastadiene-3β,24-diol (6) on the basis of spectroscopic data analyses and comparison with those reported in the literature. Compounds 4–6 were isolated from U. australis for the first time. These compounds, together with the previously isolated secondary metabolites of this alga, were investigated for their inhibitory effects on human recombinant aldose reductase in vitro. Of the compounds, 24R,28S and 24S,28R-epoxy-24-ethylcholesterol (5), 1-O-palmitoyl-3-O-(6′-sulfo-α-d-quinovopyranosyl) glycerol, (2S)-1-O-palmitoyl-3-O-[α-d-galactopyranosyl(1→2)β-d-galactopyranosyl] glycerol, 4-hydroxybenzoic acid, 4-hydroxyphenylacetic acid, and 8-hydroxy-(6E)-octenoic acid weakly inhibited the enzyme, while the three new sterols, 1–3, were almost inactive.
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Affiliation(s)
- Guo-Liang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Wei-Jie Guo
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Guang-Bao Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Rong-Rong Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Yu-Xue Hou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Kun Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Yang Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
| | - Wei Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.
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64
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Ito T, Nguyen HM, Win NN, Vo HQ, Nguyen HT, Morita H. Three new sesquiterpene aminoquinones from a Vietnamese Spongia sp. and their biological activities. J Nat Med 2017; 72:298-303. [PMID: 28939966 DOI: 10.1007/s11418-017-1130-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 09/08/2017] [Indexed: 01/01/2023]
Abstract
Sesquiterpenoid quinones with remarkable properties, such as anti-inflammatory, antibacterial, antiviral, antitumor, antiangiogenic, and differentiation-inducing activities, have reportedly been isolated from the marine sponge genera Dysidea, Spongia, and Dactylospongia. In our continuing search for bioactive compounds from marine sponges, three new sesquiterpenoid quinones, langcoquinones D-F (1-3), were isolated from the ethyl acetate extract of Spongia sp. collected from Vietnam. Their chemical structures were elucidated on the basis of extensive spectroscopic analyses. The newly isolated compounds 1-3 were assessed for their antibacterial activities against Gram-positive bacteria, Bacillus subtilis and Staphylococcus aureus, and Gram-negative bacteria, Klebsiella pneumoniae and Escherichia coli, as well as their cytotoxic activities against three human cancer cell lines (A549, lung cancer; MCF7, breast cancer; HeLa, cervical cancer) and a human normal cell line (WI-38 fibroblast). All compounds were inactive against the Gram-negative bacteria. Furthermore, langcoquinones E (2) and F (3) lacked antibacterial activities against the Gram-positive bacteria and cytotoxic activities against the tested cell lines. However, langcoquinone D (1) exhibited good antibacterial activities against Bacillus subtilis and Staphylococcus aureus, with MIC values of 12.5 and 25.0 µM, respectively. Furthermore, 1 exhibited significant cytotoxic activities against three human cancer cell lines (A549, lung cancer; MCF7, breast cancer; HeLa, cervical cancer) and a human normal cell line (WI-38 fibroblast).
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Affiliation(s)
- Takuya Ito
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
| | - Hien Minh Nguyen
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Nwet Nwet Win
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,Department of Chemistry, University of Yangon, Yangon, 11041, Myanmar
| | - Hung Quoc Vo
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen, Hue City, Vietnam
| | - Hoai Thi Nguyen
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen, Hue City, Vietnam
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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65
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Tang MC, Cui X, He X, Ding Z, Zhu T, Tang Y, Li D. Late-Stage Terpene Cyclization by an Integral Membrane Cyclase in the Biosynthesis of Isoprenoid Epoxycyclohexenone Natural Products. Org Lett 2017; 19:5376-5379. [PMID: 28926261 DOI: 10.1021/acs.orglett.7b02653] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Macrophorins are representative examples of isoprenoid epoxycyclohexenones containing cyclized drimane moieties. We located and characterized the biosynthetic gene cluster of macrophorin from Penicillium terrestris. MacJ encoded by this cluster was characterized to be the first example of a membrane-bound type-II terpene cyclase catalyzing the cyclization of meroterpenoids via direct protonation of the terminal olefinic bond in acyclic yanuthones. The late-stage functionalization and substrate promiscuity of MacJ make it a potential biocatalyst for the synthesis of macrophorin analogues.
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Affiliation(s)
| | - Xiaoqing Cui
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Xueqian He
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Zhuang Ding
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | | | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237, People's Republic of China
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66
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Xu XL, Li Z. Catalytic Electrophilic Alkylation ofp-Quinones through a Redox Chain Reaction. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702885] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiao-Long Xu
- School of Physical Science and Technology; ShanghaiTech University; 393 Middle Huaxia Road, Pudong Shanghai 201210 China
| | - Zhi Li
- School of Physical Science and Technology; ShanghaiTech University; 393 Middle Huaxia Road, Pudong Shanghai 201210 China
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67
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Xu XL, Li Z. Catalytic Electrophilic Alkylation ofp-Quinones through a Redox Chain Reaction. Angew Chem Int Ed Engl 2017; 56:8196-8200. [DOI: 10.1002/anie.201702885] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/07/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xiao-Long Xu
- School of Physical Science and Technology; ShanghaiTech University; 393 Middle Huaxia Road, Pudong Shanghai 201210 China
| | - Zhi Li
- School of Physical Science and Technology; ShanghaiTech University; 393 Middle Huaxia Road, Pudong Shanghai 201210 China
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New merosesquiterpenes from a Vietnamese marine sponge of Spongia sp. and their biological activities. Bioorg Med Chem Lett 2017; 27:3043-3047. [PMID: 28558970 DOI: 10.1016/j.bmcl.2017.05.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/17/2017] [Accepted: 05/19/2017] [Indexed: 11/22/2022]
Abstract
The investigation of the Vietnamese marine sponge Spongia sp. led to the isolation of three new sesquiterpene phenols, langconols A-C (1-3), and one new sesquiterpene hydroxyquinone, langcoquinone C (4), together with two known meroterpenoids (5 and 6). Their structures were determined on the basis of spectroscopic analyses and comparisons with published data. Furthermore, the antibacterial assays of the isolates 1-6 suggested that 4 and 6 had significant antibacterial activities against Bacillus subtilis and Staphylococcus aureus, with MICs ranging from 6.25 to 25.0µM, while 1 and 3 possessed significant antibacterial activities against B. subtilis with MICs of 12.5 and 25.0µM, respectively. In contrast, cytotoxic assays of the isolated compounds 1-6, as well as compounds 7-15 previously isolated from this sponge, indicated that 1 and the previously reported anti-B. subtilis and anti-S. aureus sesquiterpene phenol 9 lacked cytotoxic activities against three human cancer cell lines (A549, lung cancer; MCF7, breast cancer; HeLa, cervix cancer) and a human normal cell line (WI-38 fibroblast).
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69
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Zhong M, Yin P, Zhao L. Toxic effect of nonylphenol on the marine macroalgae Gracilaria lemaneiformis (Gracilariales, Rhodophyta): antioxidant system and antitumor activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10519-10527. [PMID: 28281074 DOI: 10.1007/s11356-017-8669-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/20/2017] [Indexed: 06/06/2023]
Abstract
The objective of the present work was to evaluate the toxic effect of nonylphenol (NP) on the antioxidant response and antitumor activity of Gracilaria lemaneiformis. An obvious oxidative damage was observed in this study. The thallus exposed to NP showed 1.2-2.0-fold increase in lipid peroxide and displayed a maximum level of 16.58 μmol g-1 Fw on 0.6 mg L-1 for 15-day exposure. The activities of antioxidant enzymes such as superoxide dismutase (SOD) and catalase (CAT) enhanced significantly by 1.1-3.2-fold and subsequently diminished at the high concentrations and prolonged exposure. The results of DNA damage in comet assay also supported that NP was obviously toxic on G. lemaneiformis with increasing the percentage of tail DNA in a dose-dependent manner. Furthermore, the ethanol extract of G. lemaneiformis (EEGL) did exhibit antitumor potential against HepG-2 cells. While decreased in cell inhibition, ROS generation, apoptosis, and caspase-3 in HepG-2 cells treated with the EEGL were observed when G. lemaneiformis was exposed to NP for 15 days, and which were related to exposure concentration of NP. These suggested that NP has strongly toxic effect on the antitumor activity of G. lemaneiformis. The results revealed in this study imply that macroalgae can be useful biomarkers to evaluate marine pollutions.
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Affiliation(s)
- Mingqin Zhong
- Department of Chemistry, Jinan University, No. 601, Huangpu Da Dao Xi, Guangzhou, 510632, People's Republic of China
| | - Pinghe Yin
- Department of Chemistry, Jinan University, No. 601, Huangpu Da Dao Xi, Guangzhou, 510632, People's Republic of China.
- Center of Analysis and Test, Jinan University, Guangzhou, 510632, China.
| | - Ling Zhao
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, No. 601, Huangpu Da Dao Xi, Guangzhou, 510632, People's Republic of China.
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70
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Gunera J, Kindinger F, Li SM, Kolb P. PrenDB, a Substrate Prediction Database to Enable Biocatalytic Use of Prenyltransferases. J Biol Chem 2017; 292:4003-4021. [PMID: 28007960 DOI: 10.1074/jbc.m116.759118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/21/2016] [Indexed: 11/06/2022] Open
Abstract
Prenyltransferases of the dimethylallyltryptophan synthase (DMATS) superfamily catalyze the attachment of prenyl or prenyl-like moieties to diverse acceptor compounds. These acceptor molecules are generally aromatic in nature and mostly indole or indole-like. Their catalytic transformation represents a major skeletal diversification step in the biosynthesis of secondary metabolites, including the indole alkaloids. DMATS enzymes thus contribute significantly to the biological and pharmacological diversity of small molecule metabolites. Understanding the substrate specificity of these enzymes could create opportunities for their biocatalytic use in preparing complex synthetic scaffolds. However, there has been no framework to achieve this in a rational way. Here, we report a chemoinformatic pipeline to enable prenyltransferase substrate prediction. We systematically catalogued 32 unique prenyltransferases and 167 unique substrates to create possible reaction matrices and compiled these data into a browsable database named PrenDB. We then used a newly developed algorithm based on molecular fragmentation to automatically extract reactive chemical epitopes. The analysis of the collected data sheds light on the thus far explored substrate space of DMATS enzymes. To assess the predictive performance of our virtual reaction extraction tool, 38 potential substrates were tested as prenyl acceptors in assays with three prenyltransferases, and we were able to detect turnover in >55% of the cases. The database, PrenDB (www.kolblab.org/prendb.php), enables the prediction of potential substrates for chemoenzymatic synthesis through substructure similarity and virtual chemical transformation techniques. It aims at making prenyltransferases and their highly regio- and stereoselective reactions accessible to the research community for integration in synthetic work flows.
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Affiliation(s)
- Jakub Gunera
- From the Department of Pharmaceutical Chemistry, Philipps-University, Marburg, Hesse 35032, Germany.,Synmikro, LOEWE Centre for Synthetic Microbiology, Philipps-University, Marburg, Hesse 35043, Germany
| | - Florian Kindinger
- the Institute of Pharmaceutical Biology and Biotechnology, Philipps-University, Marburg, Hesse 35032, Germany, and
| | - Shu-Ming Li
- Synmikro, LOEWE Centre for Synthetic Microbiology, Philipps-University, Marburg, Hesse 35043, Germany .,the Institute of Pharmaceutical Biology and Biotechnology, Philipps-University, Marburg, Hesse 35032, Germany, and
| | - Peter Kolb
- From the Department of Pharmaceutical Chemistry, Philipps-University, Marburg, Hesse 35032, Germany, .,Synmikro, LOEWE Centre for Synthetic Microbiology, Philipps-University, Marburg, Hesse 35043, Germany
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Peduto A, Scuotto M, Krauth V, Roviezzo F, Rossi A, Temml V, Esposito V, Stuppner H, Schuster D, D'Agostino B, Schiraldi C, de Rosa M, Werz O, Filosa R. Optimization of benzoquinone and hydroquinone derivatives as potent inhibitors of human 5-lipoxygenase. Eur J Med Chem 2017; 127:715-726. [DOI: 10.1016/j.ejmech.2016.10.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 10/19/2016] [Accepted: 10/20/2016] [Indexed: 12/01/2022]
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72
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Veguillas M, Rojas-Martín J, Ribagorda M, Carreño MC. Synthesis of functionalized alkyl substituted benzoquinones by Rh-catalyzed additions of boronic acids. Org Biomol Chem 2017. [DOI: 10.1039/c7ob00979h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, group tolerant one-pot process has been developed for the synthesis of functionalized-quinones, using a Rh-catalyzed addition as a key step.
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Affiliation(s)
- Marcos Veguillas
- Departamento de Química Orgánica (Módulo 1)
- Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
| | - Jaime Rojas-Martín
- Departamento de Química Orgánica (Módulo 1)
- Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
| | - María Ribagorda
- Departamento de Química Orgánica (Módulo 1)
- Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)
| | - M. Carmen Carreño
- Departamento de Química Orgánica (Módulo 1)
- Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)
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73
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Xu H, Chen Q, Wang H, Xu P, Yuan R, Li X, Bai L, Xue M. Inhibitory effects of lapachol on rat C6 glioma in vitro and in vivo by targeting DNA topoisomerase I and topoisomerase II. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2016; 35:178. [PMID: 27852319 PMCID: PMC5112657 DOI: 10.1186/s13046-016-0455-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/09/2016] [Indexed: 12/29/2022]
Abstract
Background Lapachol is a natural naphthoquinone compound that possesses extensive biological activities. The aim of this study is to investigate the inhibitory effects of lapachol on rat C6 glioma both in vitro and in vivo, as well as the potential mechanisms. Methods The antitumor effect of lapachol was firstly evaluated in the C6 glioma model in Wistar rats. The effects of lapachol on C6 cell proliferation, apoptosis and DNA damage were detected by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS)/ phenazinemethosulfate (PMS) assay, hoechst 33358 staining, annexin V-FITC/PI staining, and comet assay. Effects of lapachol on topoisomerase I (TOP I) and topoisomerase II (TOP II) activities were detected by TOP I and TOP II mediated supercoiled pBR322 DNA relaxation assays and molecular docking. TOP I and TOP II expression levels in C6 cells were also determined. Results High dose lapachol showed significant inhibitory effect on the C6 glioma in Wistar rats (P < 0.05). It was showed that lapachol could inhibit proliferation, induce apoptosis and DNA damage of C6 cells in dose dependent manners. Lapachol could inhibit the activities of both TOP I and II. Lapachol-TOP I showed relatively stronger interaction than that of lapachol-TOP II in molecular docking study. Also, lapachol could inhibit TOP II expression levels, but not TOP I expression levels. Conclusion These results showed that lapachol could significantly inhibit C6 glioma both in vivo and in vitro, which might be related with inhibiting TOP I and TOP II activities, as well as TOP II expression.
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Affiliation(s)
- Huanli Xu
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Qunying Chen
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Hong Wang
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Pingxiang Xu
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Ru Yuan
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Xiaorong Li
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Lu Bai
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China
| | - Ming Xue
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, No.10 Youanmenwaixitoutiao, Fengtai District, Beijing, 100069, China.
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74
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He WJ, Zhou XJ, Qin XC, Mai YX, Lin XP, Liao SR, Yang B, Zhang T, Tu ZC, Wang JF, Liu Y. Quinone/hydroquinone meroterpenoids with antitubercular and cytotoxic activities produced by the sponge-derived fungus Gliomastix sp. ZSDS1-F7. Nat Prod Res 2016; 31:604-609. [PMID: 27417331 DOI: 10.1080/14786419.2016.1207076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Fifteen compounds, including six quinone/hydroquinone meroterpenoids, purpurogemutantin (1), macrophorin A (2), 4'-oxomacrophorin (3), 7-deacetoxyyanuthone A (4), 2,3-hydro-deacetoxyyanuthone A (5), 22-deacetylyanuthone A (6), anicequol (7), three roquefortine derivatives, roquefortine C (8), (16S)-hydroxyroquefortine C (9), (16R)-hydroxyroquefortine C (10), dihydroresorcylide (11), nectriapyrone (12), together with three fatty acid derivatives, methyl linoleate (13), phospholipase A2 (14), methyl elaidate (15), were isolated from the sponge-derived fungus Gliomastix sp. ZSDS1-F7 isolated from the sponge Phakellia fusca Thiele collected in the Yongxing island of Xisha. Their structures were elucidated mainly by extensive NMR spectroscopic and mass spectrometric analyses. Among these compounds, compounds 1-3 and 5-7 showed significant in vitro cytotoxicities against the K562, MCF-7, Hela, DU145, U937, H1975, SGC-7901, A549, MOLT-4 and HL60 cell lines, with IC50 values ranging from 0.19 to 35.4 μM. And compounds 2-4 exhibited antitubercular activity with IC50 values of 22.1, 2.44 and 17.5 μM, respectively. Furthermore, compound 7 had anti-enterovirus 71 activity with MIC value of 17.8 μM. To the best of our knowledge, this is the first report to product two quinone/hydroquinone meroterpenoids skeletons (linear skeleton and drimane skeleton) from the same fungal strain.
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Affiliation(s)
- Wei-Jun He
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China.,b College of Pharmacy , Hunan University of Chinese Medicine , Changsha , P.R. China
| | - Xiao-Jiang Zhou
- b College of Pharmacy , Hunan University of Chinese Medicine , Changsha , P.R. China
| | - Xiao-Chu Qin
- c Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Yong-Xin Mai
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Xiu-Ping Lin
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Sheng-Rong Liao
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Bin Yang
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Tianyu Zhang
- c Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Zheng-Chao Tu
- c Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Jun-Feng Wang
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China
| | - Yonghong Liu
- a CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , P.R. China.,d South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center , Guangzhou , P.R. China
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75
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Le Pogam P, Le Lamer AC, Siva B, Legouin B, Bondon A, Graton J, Jacquemin D, Rouaud I, Ferron S, Obermayer W, Babu KS, Boustie J. Minor Pyranonaphthoquinones from the Apothecia of the Lichen Ophioparma ventosa. JOURNAL OF NATURAL PRODUCTS 2016; 79:1005-1011. [PMID: 26934105 DOI: 10.1021/acs.jnatprod.5b01073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Four new quinonoid naphthopyranones, ophioparmin (1), 4-methoxyhaemoventosins (2a and 2b), and 4-hydroxyhaemoventosin (3), together with anhydrofusarubin lactone (4) and haemoventosin (5) were isolated from the fruiting bodies of Ophioparma ventosa, a crustose lichen. Their structures were determined by spectroscopic analyses, and the absolute configurations of 1 and 2 were elucidated through experimental and calculated electronic circular dichroism analyses. Compounds 1, 2, and 5 exhibited moderate to strong antioxidant activities. The main pigment haemoventosin exhibited significant cytotoxicity toward a panel of nine cell lines.
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Affiliation(s)
- Pierre Le Pogam
- UMR CNRS 6226 ISCR PNSCM, Université de Rennes 1 , 2 Avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Anne-Cécile Le Lamer
- UMR CNRS 6226 ISCR PNSCM, Université de Rennes 1 , 2 Avenue du Professeur Léon Bernard, 35043 Rennes, France
- Université Paul Sabatier Toulouse 3 , 118 Route de Narbonne, 31062 Toulouse, France
| | - Bandi Siva
- Division of Natural Products Chemistry CSIR, Indian Institute of Chemical Technology , Uppal Road, Hyderabad 500607, India
| | - Béatrice Legouin
- UMR CNRS 6226 ISCR PNSCM, Université de Rennes 1 , 2 Avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Arnaud Bondon
- UMR CNRS 6226 ISCR ICMV, Université de Rennes 1 , Plate-forme PRISM, CS 34317, 35043 Rennes, France
| | - Jérôme Graton
- UMR CNRS 6230, Chimie et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), Université de Nantes , 2 Rue de la Houssinière, BP 92208, 44322 CEDEX 3 Nantes , France
| | - Denis Jacquemin
- UMR CNRS 6230, Chimie et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM), Université de Nantes , 2 Rue de la Houssinière, BP 92208, 44322 CEDEX 3 Nantes , France
- Institut Universitaire de France , 1 Rue Descartes, 75231 CEDEX 05 Paris, France
| | - Isabelle Rouaud
- UMR CNRS 6226 ISCR PNSCM, Université de Rennes 1 , 2 Avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Solenn Ferron
- UMR CNRS 6226 ISCR PNSCM, Université de Rennes 1 , 2 Avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Walter Obermayer
- Institut für Pflanzenwissenschaften, Karl-Franzens-Universität , Holteigasse 6, A-8010 Graz, Austria
| | - K Suresh Babu
- Division of Natural Products Chemistry CSIR, Indian Institute of Chemical Technology , Uppal Road, Hyderabad 500607, India
| | - Joël Boustie
- UMR CNRS 6226 ISCR PNSCM, Université de Rennes 1 , 2 Avenue du Professeur Léon Bernard, 35043 Rennes, France
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Yang Y, Zhou H, Du G, Feng K, Feng T, Fu X, Liu J, Zeng Y. A Monooxygenase from
Boreostereum vibrans
Catalyzes Oxidative Decarboxylation in a Divergent Vibralactone Biosynthesis Pathway. Angew Chem Int Ed Engl 2016; 55:5463-6. [PMID: 27007916 DOI: 10.1002/anie.201510928] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/09/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Yan‐Long Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hui Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Gang Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ke‐Na Feng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Tao Feng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- School of Pharmaceutical Sciences South-Central University for Nationalities Wuhan 430074 China
| | - Xiao‐Li Fu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
| | - Ji‐Kai Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- School of Pharmaceutical Sciences South-Central University for Nationalities Wuhan 430074 China
| | - Ying Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
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77
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Yang Y, Zhou H, Du G, Feng K, Feng T, Fu X, Liu J, Zeng Y. A Monooxygenase from
Boreostereum vibrans
Catalyzes Oxidative Decarboxylation in a Divergent Vibralactone Biosynthesis Pathway. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510928] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yan‐Long Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hui Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Gang Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ke‐Na Feng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Tao Feng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- School of Pharmaceutical Sciences South-Central University for Nationalities Wuhan 430074 China
| | - Xiao‐Li Fu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
| | - Ji‐Kai Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
- School of Pharmaceutical Sciences South-Central University for Nationalities Wuhan 430074 China
| | - Ying Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 Yunnan China
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78
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Dengiz C, Prange C, Gawel P, Trapp N, Ruhlmann L, Boudon C, Diederich F. Push–pull chromophores by reaction of 2,3,5,6-tetrahalo-1,4-benzoquinones with 4-(N,N-dialkylanilino)acetylenes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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79
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de los Reyes C, Ortega MJ, Zbakh H, Motilva V, Zubía E. Cystoseira usneoides: A Brown Alga Rich in Antioxidant and Anti-inflammatory Meroditerpenoids. JOURNAL OF NATURAL PRODUCTS 2016; 79:395-405. [PMID: 26859694 DOI: 10.1021/acs.jnatprod.5b01067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Twelve new meroditerpenoids, 1-12, along with eight known compounds, have been isolated from the brown alga Cystoseira usneoides collected off the coast of Tarifa (Spain). The structures of the new metabolites have been established by spectroscopic techniques. All of the new compounds consist of a toluhydroquinone-derived nucleus linked to a regular diterpenoid moiety, which can either be acyclic or contain an ether ring. Most structural diversity arises from the presence of different oxygenated functionalities and unsaturations along the two terminal isoprenoid units of the diterpene backbone. Twelve of the isolated meroditerpenes have been tested in antioxidant assays. All of them have shown radical-scavenging activity. The most active compounds were cystodiones G (1) and H (2), 11-hydroxyamentadione (15), and amentadione (16), which exhibited antioxidant activities in the range of 77-87% that of the Trolox standard. In anti-inflammatory assays, cystodiones G (1) and M (6), cystone C (9), 11-hydroxyamentadione (15), and amentadione (16) showed significant activity as inhibitors of the production of the proinflammatory cytokine TNF-α in LPS-stimulated THP-1 human macrophages.
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Affiliation(s)
- Carolina de los Reyes
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , 11510 Puerto Real (Cádiz), Spain
| | - María J Ortega
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , 11510 Puerto Real (Cádiz), Spain
| | - Hanaa Zbakh
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Sevilla , 41012 Sevilla, Spain
- Department of Biology, Faculty of Sciences, University Abdelmalek Essâadi , 93030 Tetouan, Morocco
| | - Virginia Motilva
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Sevilla , 41012 Sevilla, Spain
| | - Eva Zubía
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , 11510 Puerto Real (Cádiz), Spain
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80
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Hosamani B, Ribeiro MF, da Silva Júnior EN, Namboothiri INN. Catalytic asymmetric reactions and synthesis of quinones. Org Biomol Chem 2016; 14:6913-31. [DOI: 10.1039/c6ob01119e] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Organo- and metal–ligand catalysed asymmetric reactions of quinones lead to complex enantiopure compounds including quinones.
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Affiliation(s)
| | - Matheus F. Ribeiro
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
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81
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Zhivetyeva S, Selivanova G, Goryunov L, Bagryanskaya I, Shteingarts V. Triphenylphosphanodefluorination of fluoranil and its derivatives. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.08.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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82
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Jäger SN, Porta EOJ, Labadie GR. Tuning the Lewis acid phenol ortho-prenylation as a molecular diversity tool. Mol Divers 2015; 20:407-19. [PMID: 26525879 DOI: 10.1007/s11030-015-9644-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 10/19/2015] [Indexed: 11/30/2022]
Abstract
A diversity-oriented approach for the synthesis of various structurally different prenylated alcohols from readily accessible and common precursors was developed. With varying approaches, this article describes some successful examples of a Friedel-Crafts alkylation using methoxyphenols and different prenyl alcohols (geraniol and (E,E)-farnesol). We demonstrated that just by varying the stoichiometry of the Lewis acid used, the course of the reaction can be shifted to produce the alkylated or the cyclized product. Eighteen unique products were obtained with good isolated yields by direct alkylation with or without a consecutive π-cationic cyclization.
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Affiliation(s)
- Sebastián N Jäger
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Exequiel O J Porta
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Guillermo R Labadie
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina.
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83
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Vilipić J, Novaković I, Stanojković T, Matić I, Šegan D, Kljajić Z, Sladić D. Synthesis and biological activity of amino acid derivatives of avarone and its model compound. Bioorg Med Chem 2015; 23:6930-42. [DOI: 10.1016/j.bmc.2015.09.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/23/2015] [Accepted: 09/26/2015] [Indexed: 10/23/2022]
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84
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Pingaew R, Prachayasittikul V, Worachartcheewan A, Nantasenamat C, Prachayasittikul S, Ruchirawat S, Prachayasittikul V. Novel 1,4-naphthoquinone-based sulfonamides: Synthesis, QSAR, anticancer and antimalarial studies. Eur J Med Chem 2015; 103:446-59. [DOI: 10.1016/j.ejmech.2015.09.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/11/2015] [Accepted: 09/02/2015] [Indexed: 11/28/2022]
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85
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Fan A, Winkelblech J, Li SM. Impacts and perspectives of prenyltransferases of the DMATS superfamily for use in biotechnology. Appl Microbiol Biotechnol 2015; 99:7399-415. [PMID: 26227408 DOI: 10.1007/s00253-015-6813-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/29/2015] [Accepted: 07/01/2015] [Indexed: 12/22/2022]
Abstract
Prenylated compounds are ubiquitously found in nature and demonstrate interesting biological and pharmacological activities. Prenyltransferases catalyze the attachment of prenyl moieties from different prenyl donors to various acceptors and contribute significantly to the structural and biological diversity of natural products. In the last decade, significant progress has been achieved for the prenyltransferases of the dimethylallyltryptophan synthase (DMATS) superfamily. More than 40 members of these soluble enzymes are identified in microorganisms and characterized biochemically. These enzymes were also successfully used for production of a large number of prenylated derivatives. N1-, C4-, C5-, C6-, and C7-prenylated tryptophan and N1-, C2-, C3-, C4-, and C7-prenylated tryptophan-containing peptides were obtained by using DMATS enzymes as biocatalysts. Tyrosine and xanthone prenyltransferases were used for production of prenylated derivatives of their analogs. More interestingly, the members of the DMATS superfamily demonstrated intriguing substrate and catalytic promiscuity and also used structurally quite different compounds as prenyl acceptors. Prenylated hydroxynaphthalenes, flavonoids, indolocarbazoles, and acylphloroglucinols, which are typical bacterial or plant metabolites, were produced by using several fungal DMATS enzymes. Furthermore, the potential usage of these enzymes was further expanded by using natural or unnatural DMAPP analogs as well as by coexpression with other genes like NRPS and by development of whole cell biocatalyst.
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Affiliation(s)
- Aili Fan
- Institut für Pharmazeutische Biologie und Biotechnologie, Philipps-Universität Marburg, Deutschhausstrasse 17A, D-35037, Marburg, Germany
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86
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87
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Bio-inspired dimerisation of prenylated quinones directed towards the synthesis of the meroterpenoid natural products, the scabellones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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88
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Kulcitki V, Harghel P, Ungur N. Unusual cyclic terpenoids with terminal pendant prenyl moieties: from occurrence to synthesis. Nat Prod Rep 2015; 31:1686-720. [PMID: 25118808 DOI: 10.1039/c4np00081a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The paper reviews the known examples of cyclic terpenoids produced from open chain polyenic precursors by an "unusual" biosynthetic pathway, involving selective electrophilic attack on an internal double bond followed by cyclization. The resulting compounds possess cyclic backbones with pendant terminal prenyl groups. Synthetic approaches applied for the synthesis of such specifically functionalized compounds are also discussed, as well as biological activity of reported representatives.
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Affiliation(s)
- Veaceslav Kulcitki
- Institute of Chemistry, Moldova Academy of Sciences, Academiei str. 3, MD-2028, Chişinău, Republic of Moldova.
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89
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Castro MÁ, Gamito AM, Tangarife-Castaño V, Roa-Linares V, Miguel del Corral JM, Mesa-Arango AC, Betancur-Galvis L, Francesch AM, San Feliciano A. New 1,4-anthracenedione derivatives with fused heterocyclic rings: synthesis and biological evaluation. RSC Adv 2015. [DOI: 10.1039/c4ra11726c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New 1,4-anthracenediones bearing fused-heterocycle rings were synthesized and evaluated as cytotoxics, antifungals and antivirals. Some of them showed GI50 at the μM level.
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Affiliation(s)
- Ma. Ángeles Castro
- Departamento de Química Farmacéutica
- Facultad de Farmacia
- CIETUS-IBSAL
- Campus Miguel de Unamuno
- Universidad de Salamanca
| | - Ana Ma. Gamito
- Departamento de Química Farmacéutica
- Facultad de Farmacia
- CIETUS-IBSAL
- Campus Miguel de Unamuno
- Universidad de Salamanca
| | - Verónica Tangarife-Castaño
- Grupo de Investigación Dermatológica
- Facultad de Medicina
- Departamento de Medicina Interna
- Universidad de Antioquia
- Medellín
| | - Vicky Roa-Linares
- Grupo de Investigación Dermatológica
- Facultad de Medicina
- Departamento de Medicina Interna
- Universidad de Antioquia
- Medellín
| | - José Ma. Miguel del Corral
- Departamento de Química Farmacéutica
- Facultad de Farmacia
- CIETUS-IBSAL
- Campus Miguel de Unamuno
- Universidad de Salamanca
| | - Ana C. Mesa-Arango
- Grupo de Investigación Dermatológica
- Facultad de Medicina
- Departamento de Medicina Interna
- Universidad de Antioquia
- Medellín
| | - Liliana Betancur-Galvis
- Grupo de Investigación Dermatológica
- Facultad de Medicina
- Departamento de Medicina Interna
- Universidad de Antioquia
- Medellín
| | | | - Arturo San Feliciano
- Departamento de Química Farmacéutica
- Facultad de Farmacia
- CIETUS-IBSAL
- Campus Miguel de Unamuno
- Universidad de Salamanca
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90
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Takemoto K, Kamisuki S, Chia PT, Kuriyama I, Mizushina Y, Sugawara F. Bioactive dihydronaphthoquinone derivatives from Fusarium solani. JOURNAL OF NATURAL PRODUCTS 2014; 77:1992-1996. [PMID: 25163667 DOI: 10.1021/np500175j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
New dihydronaphthoquinone derivatives, karuquinone A (1), karuquinone B (2), and karuquinone C (3), were isolated from a fungal culture broth of Fusarium solani. The structures were determined by interpretation of spectroscopic data (1D/2D NMR, MS, and IR). Three known compounds, javanicin (4), 2,3-dihydro-5-hydroxy-8-methoxy-2,4-dimethylnaphtho[1,2-b]furan-6,9-dione (5), and 5-hydroxydihydrofusarubin C (6), were also isolated. The six isolated compounds were tested for cytotoxicity against three human cancer cell lines and a human umbilical vein endothelial cell (HUVEC) line. Of these, karuquinone A exhibited the strongest cytotoxic activity. Karuquinone B did not affect the proliferation of the cancer cell lines but did inhibit the proliferation of HUVEC. Additionally, we demonstrated that karuquinone A induces apoptosis in cancer cells through the generation of reactive oxygen species (ROS).
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Affiliation(s)
- Kenji Takemoto
- Department of Applied Biological Science, Tokyo University of Science , Noda, Chiba 278-8510, Japan
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91
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Red Sea Suberea mollis Sponge Extract Protects against CCl4-Induced Acute Liver Injury in Rats via an Antioxidant Mechanism. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:745606. [PMID: 25214875 PMCID: PMC4157001 DOI: 10.1155/2014/745606] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 07/22/2014] [Accepted: 07/22/2014] [Indexed: 01/14/2023]
Abstract
Recent studies have demonstrated that marine sponges and their active constituents exhibited several potential medical applications. This study aimed to evaluate the possible hepatoprotective role as well as the antioxidant effect of the Red Sea Suberea mollis sponge extract (SMSE) on carbon tetrachloride- (CCl4-) induced acute liver injury in rats. In vitro antioxidant activity of SMSE was evaluated by 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) assay. Rats were orally administered three different concentrations (100, 200, and 400 mg/kg) of SMSE and silymarin (100 mg/kg) along with CCl4 (1 mL/kg, i.p., every 72 hr) for 14 days. Plasma aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and total bilirubin were measured. Hepatic malondialdehyde (MDA), reduced glutathione (GSH), nitric oxide (NO), superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT) were also measured. Liver specimens were histopathologically examined. SMSE showed strong scavenging activity against free radicals in DPPH assay. SMSE significantly reduced liver enzyme activities. Moreover, SMSE significantly reduced hepatic MDA formation. In addition, SMSE restored GSH, NO, SOD, GPx, and CAT. The histopathological results confirmed these findings. The results of this study suggested a potent protective effect of the SMSE against CCl4-induced hepatic injury. This may be due to its antioxidant and radical scavenging activity.
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92
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Quinone and hydroquinone metabolites from the ascidians of the genus Aplidium. Mar Drugs 2014; 12:3608-33. [PMID: 24927227 PMCID: PMC4071593 DOI: 10.3390/md12063608] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/03/2014] [Accepted: 06/04/2014] [Indexed: 11/16/2022] Open
Abstract
Ascidians of the genus Aplidium are recognized as an important source of chemical diversity and bioactive natural products. Among the compounds produced by this genus are non-nitrogenous metabolites, mainly prenylated quinones and hydroquinones. This review discusses the isolation, structural elucidation, and biological activities of quinones, hydroquinones, rossinones, longithorones, longithorols, floresolides, scabellones, conicaquinones, aplidinones, thiaplidiaquinones, and conithiaquinones. A compilation of the 13C-NMR spectral data of these compounds is also presented.
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93
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Myobatake Y, Takemoto K, Kamisuki S, Inoue N, Takasaki A, Takeuchi T, Mizushina Y, Sugawara F. Cytotoxic alkylated hydroquinone, phenol, and cyclohexenone derivatives from Aspergillus violaceofuscus Gasperini. JOURNAL OF NATURAL PRODUCTS 2014; 77:1236-1240. [PMID: 24786915 DOI: 10.1021/np401017g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
New alkylated hydroquinones violaceoid A (1), violaceoid B (2), and violaceoid C (3), an alkylated phenol violaceoid D (4), and a cyclohexenoid violaceoid E (5) were isolated from a culture broth of Aspergillus violaceofuscus Gasperini isolated from moss. The structures were identified by interpretation of spectroscopic data (1D and 2D NMR, MS, and IR). Two known compounds, the cyclohexenoid 6 and eupenoxide (7), were also isolated. Compound 6 was isolated for the first time as a natural product and named violaceoid F. Isolated compounds were tested for cytotoxic activity against five human cancer cell lines and a mouse macrophage cell line. Violaceoid A was the most potent of the seven compounds against all cell lines. Violaceoid C and D exhibited cytotoxicity against the leukemia cell lines with LD50 values 5.9-8.3 μM, while violaceoid F was found to be cytotoxic against HCT116 and RAW264.7 with LD50 values of 6.4 and 6.5 μM, respectively. These results demonstrate that violaceoid derivatives are a new class of cytotoxic hydroquinones with a hydroxymethyl and a linear alkyl substituent.
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Affiliation(s)
- Yusuke Myobatake
- Department of Applied Biological Science, Tokyo University of Science , Noda, Chiba 278-8510, Japan
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94
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Abstract
This review covers the literature published in 2012 for marine natural products, with 1035 citations (673 for the period January to December 2012) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1241 for 2012), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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95
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Pawar O, Patekar A, Khan A, Kathawate L, Haram S, Markad G, Puranik V, Salunke-Gawali S. Molecular structures and biological evaluation of 2-chloro-3-(n-alkylamino)-1,4-napthoquinone derivatives as potent antifungal agents. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.11.029] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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96
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Hook I, Mills C, Sheridan H. Bioactive Naphthoquinones from Higher Plants. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2014. [DOI: 10.1016/b978-0-444-63294-4.00005-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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97
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98
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Patra S, Muthuraman MS. Gracilaria edulis extract induces apoptosis and inhibits tumor in Ehrlich ascites tumor cells in vivo. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:331. [PMID: 24274337 PMCID: PMC4222716 DOI: 10.1186/1472-6882-13-331] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 11/22/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND Marine environment is inestimable for their chemical and biological diversity and therefore is an extraordinary resource for the discovery of new anticancer drugs. Recent development in elucidation of the mechanism and therapeutic action of natural products helped to evaluate for their potential activity. METHODS We evaluated Gracilaria edulis J. Ag (Brown algae), for its antitumor potential against the Ehrlich ascites tumor (EAT) in vivo and in vitro. Cytotoxicity evaluation of Ethanol Extract of Gracilaria edulis (EEGE) using EAT cells showed significant activity. In vitro studies indicated that EEGE cytotoxicity to EAT cells is mediated through its ability to produce reactive oxygen species (ROS) and therefore decreasing intracellular glutathione (GSH) levels may be attributed to oxidative stress. RESULTS Apoptotic parameters including Annexin-V positive cells, increased levels of DNA fragmentation and increased caspase-2, caspase-3 and caspase-9 activities indicated the mechanism might be by inducing apoptosis. Intraperitoneally administration of EEGE to EAT-bearing mice helped to increase the lifespan of the animals significantly inhibited tumor growth and increased survival of mice. Extensive hematology, biochemistry and histopathological analysis of liver and kidney indicated that daily doses of EEGE up to 300 mg/kg for 35 days are well tolerated and did not cause hematotoxicity nor renal or hepatotoxicity. CONCLUSION Comprehensive antitumor analysis in animal model and in Ehrlich Ascites Tumor cells was done including biochemical, and pathological evaluations indicate antitumor activity of the extract and non toxic in vivo. It was evident that the mechanism explains the apoptotic activity of the algae extract.
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Affiliation(s)
- Satyajit Patra
- Medical University of the Americas, Charlestown, Nevis, West Indies
| | - Meenakshi Sundaram Muthuraman
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA University Thanjavur, 613401, TamilNadu, India
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Johansen TK, Villegas Gómez C, Bak JR, Davis RL, Jørgensen KA. Organocatalytic enantioselective cycloaddition reactions of dienamines with quinones. Chemistry 2013; 19:16518-22. [PMID: 24281799 DOI: 10.1002/chem.201303526] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Tore Kiilerich Johansen
- Center for Catalysis, Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C (Denmark)
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100
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Muthusaravanan S, Devi Bala B, Perumal S. Facile four-component domino reactions for the synthesis of highly functionalized tetrahydroquinolones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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