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Chen S, Oliva M, Van Meervelt L, Van der Eycken EV, Sharma UK. Palladium‐Catalyzed Domino Synthesis of 2,3‐Difunctionalized Indoles
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Migratory Insertion of Isocyanides in Batch and Continuous Flow. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100339] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Su Chen
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Monica Oliva
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Luc Van Meervelt
- Biomolecular Architecture Department of Chemistry KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
- Peoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya street 6 RU-117198 Moscow Russia
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
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2
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Su R, Yang XH, Hu M, Wang QA, Li JH. Annulation Cascades of N-Allyl- N-((2-bromoaryl)ethynyl)amides Involving C-H Functionalization. Org Lett 2019; 21:2786-2789. [PMID: 30939026 DOI: 10.1021/acs.orglett.9b00740] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An annulation cascades of N-allyl- N-((2-bromoaryl)ethynyl)amides with terminal alkynes or 1,3-dicarbonyls involving C-H functionalization for producing 2,3-functionalized indoles has been first developed by means of Cu catalysis. The method is enabled by the formation of the ketenimine intermediates to deliver 2,3-disubstituted indoles through a sequence of aza-Claisen rearrangement, C-H functionalization, Ullmann C-N coupling, and cyclization.
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Affiliation(s)
- Rongkui Su
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China.,Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, School of Metallurgy and Environment , Central South University , Changsha 410083 , China
| | - Xu-Heng Yang
- College of Arts and Sciences , National University of Defense Technology , Changsha 410073 , China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Qiu-An Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
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Shimokawa J, Fukuyama T. Synthetic Studies on Heteropolycyclic Natural Products: Strategies via Novel Reactions and Reactivities. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.1115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences, Nagoya University
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4
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Dalal KS, Tayade YA, Wagh YB, Trivedi DR, Dalal DS, Chaudhari BL. Bovine serum albumin catalyzed one-pot, three-component synthesis of dihydropyrano[2,3-c]pyrazole derivatives in aqueous ethanol. RSC Adv 2016. [DOI: 10.1039/c5ra13014j] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A BSA catalyzed synthesis of dihydropyrano[2,3-c]pyrazole derivatives via a one pot, three component reaction of an aldehyde/ketone/isatin, malononitrile and 3-methyl-1H-pyrazol-5-(4H)-one in H2O–EtOH (7 : 3) at ambient temperature is reported.
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Affiliation(s)
- Kiran S. Dalal
- School of Life Sciences
- North Maharashtra University
- Jalgaon 425 001
- India
| | - Yogesh A. Tayade
- School of Chemical Sciences
- North Maharashtra University
- Jalgaon 425 001
- India
| | - Yogesh B. Wagh
- School of Chemical Sciences
- North Maharashtra University
- Jalgaon 425 001
- India
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka (NITK)
- Mangalore 575025
- India
| | - Dipak S. Dalal
- School of Chemical Sciences
- North Maharashtra University
- Jalgaon 425 001
- India
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Ohmatsu K, Furukawa Y, Nakaguro D, Ooi T. Catalytic Asymmetric Cyanation of Alkylideneindolenines Generated from Sulfonylalkylindoles. CHEM LETT 2015. [DOI: 10.1246/cl.150581] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
| | - Yukino Furukawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
| | - Daigo Nakaguro
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
- CREST, Japan Science and Technology Agency (JST)
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Chen XB, Liu XM, Huang R, Yan SJ, Lin J. Three-Component Synthesis of Indanone-Fused Spirooxindole Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300376] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yamakawa T, Ideue E, Iwaki Y, Sato A, Tokuyama H, Shimokawa J, Fukuyama T. Total synthesis of tryprostatins A and B. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.112] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kranen E, Steffan N, Maas R, Li S, Jose J. Development of a Whole Cell Biocatalyst for the Efficient Prenylation of Indole Derivatives by Autodisplay of the Aromatic Prenyltransferase FgaPT2. ChemCatChem 2011. [DOI: 10.1002/cctc.201000429] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eva Kranen
- Bioanalytik, Institut für Pharmazeutische und Medizinische Chemie, Heinrich‐Heine‐Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf (Germany), Fax: (+49) 211‐81‐13847
| | - Nicola Steffan
- Institut für Pharmazeutische Biologie und Biotechnologie, Philipps‐Universität Marburg, Deutschhausstraße 17 A, 35037 Marburg (Germany)
| | - Ruth Maas
- Current address: Autodisplay Biotech GmbH, Lifescience Center, Merowinger Platz 1a, 40225 Düsseldorf (Germany), Fax: (+49) 211‐9945 9639
| | - Shu‐Ming Li
- Institut für Pharmazeutische Biologie und Biotechnologie, Philipps‐Universität Marburg, Deutschhausstraße 17 A, 35037 Marburg (Germany)
| | - Joachim Jose
- Bioanalytik, Institut für Pharmazeutische und Medizinische Chemie, Heinrich‐Heine‐Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf (Germany), Fax: (+49) 211‐81‐13847
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Dobish MC, Johnston JN. Chiral Brønsted base-promoted nitroalkane alkylation: enantioselective synthesis of sec-alkyl-3-substituted indoles. Org Lett 2010; 12:5744-7. [PMID: 21090654 DOI: 10.1021/ol1025712] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Brønsted base-catalyzed reaction of nitroalkanes with alkyl electrophiles provides indole heterocycles substituted at C3 bearing a sec-alkyl group with good enantioselectivity (up to 90% ee). Denitration by hydrogenolysis provides a product with equally high ee. An indolenine intermediate is implicated in the addition step, and surprisingly, water cosolvent was found to have a beneficial effect in this step, leading to a one-pot protocol for elimination/enantioselective addition using PBAM, a bis(amidine) chiral nonracemic base.
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Affiliation(s)
- Mark C Dobish
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235-1822, USA
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Genome mining and biosynthesis of fumitremorgin-type alkaloids in ascomycetes. J Antibiot (Tokyo) 2010; 64:45-9. [PMID: 21063425 DOI: 10.1038/ja.2010.128] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review summarizes the recent progress on the biosynthesis of fumitremorgin-type alkaloids; that is, the identification of the biosynthetic gene clusters from genome sequences by genome mining and proof of gene function by molecular biological and biochemical investigations.
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Yamakawa T, Ideue E, Shimokawa J, Fukuyama T. Total Synthesis of Tryprostatins A and B. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004963] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yamakawa T, Ideue E, Shimokawa J, Fukuyama T. Total Synthesis of Tryprostatins A and B. Angew Chem Int Ed Engl 2010; 49:9262-5. [DOI: 10.1002/anie.201004963] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Li SM. Prenylated indole derivatives from fungi: structure diversity, biological activities, biosynthesis and chemoenzymatic synthesis. Nat Prod Rep 2010; 27:57-78. [DOI: 10.1039/b909987p] [Citation(s) in RCA: 361] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Applications of dimethylallyltryptophan synthases and other indole prenyltransferases for structural modification of natural products. Appl Microbiol Biotechnol 2009; 84:631-9. [DOI: 10.1007/s00253-009-2128-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2009] [Revised: 07/04/2009] [Accepted: 07/04/2009] [Indexed: 01/08/2023]
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Touré BB, Hall DG. Natural Product Synthesis Using Multicomponent Reaction Strategies. Chem Rev 2009; 109:4439-86. [PMID: 19480390 DOI: 10.1021/cr800296p] [Citation(s) in RCA: 1299] [Impact Index Per Article: 86.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Barry B. Touré
- Department of Oncology Chemistry, Novartis Institutes for Biomedical Research, Inc., 250 Massachusetts Avenue, Cambridge, Massachusetts 02139, and Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Dennis G. Hall
- Department of Oncology Chemistry, Novartis Institutes for Biomedical Research, Inc., 250 Massachusetts Avenue, Cambridge, Massachusetts 02139, and Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Jain HD, Zhang C, Zhou S, Zhou H, Ma J, Liu X, Liao X, Deveau AM, Dieckhaus CM, Johnson MA, Smith KS, Macdonald TL, Kakeya H, Osada H, Cook JM. Synthesis and structure-activity relationship studies on tryprostatin A, an inhibitor of breast cancer resistance protein. Bioorg Med Chem 2008; 16:4626-51. [PMID: 18321710 PMCID: PMC2435077 DOI: 10.1016/j.bmc.2008.02.050] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 02/10/2008] [Accepted: 02/11/2008] [Indexed: 11/26/2022]
Abstract
Tryprostatin A is an inhibitor of breast cancer resistance protein, consequently a series of structure-activity studies on the cell cycle inhibitory effects of tryprostatin A analogues as potential antitumor antimitotic agents have been carried out. These analogues were assayed for their growth inhibition properties and their ability to perturb the cell cycle in tsFT210 cells. SAR studies resulted in the identification of the essential structural features required for cytotoxic activity. The absolute configuration L-Tyr-L-pro in the diketopiperazine ring along with the presence of the 6-methoxy substituent on the indole moiety of 1 was shown to be essential for dual inhibition of topoisomerase II and tubulin polymerization. Biological evaluation also indicated the presence of the 2-isoprenyl moiety on the indole scaffold of 1 was essential for potent inhibition of cell proliferation. Substitution of the indole N(a)-H in 1 with various alkyl or aryl groups, incorporation of various L-amino acids into the diketopiperazine ring in place of L-proline, and substitution of the 6-methoxy group in 1 with other functionality provided active analogues. The nature of the substituents present on the indole N(a)-H or the indole C-2 position influenced the mechanism of action of these analogues. Analogues 68 (IC(50)=10 microM) and 67 (IC(50)=19 microM) were 7-fold and 3.5-fold more potent, respectively, than 1 (IC(50)=68 microM) in the inhibition of the growth of tsFT210 cells. Diastereomer-2 of tryprostatin B 8 was a potent inhibitor of the growth of three human carcinoma cell lines: H520 (IC(50)=11.9 microM), MCF-7 (IC(50)=17.0 microM) and PC-3 (IC(50)=11.1 microM) and was equipotent with etoposide, a clinically used anticancer agent. Isothiocyanate analogue 71 and 6-azido analogue 72 were as potent as 1 in the tsFT210 cell proliferation and may be useful tools in labeling BCRP.
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Affiliation(s)
- Hiteshkumar D. Jain
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Chunchun Zhang
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Shuo Zhou
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Hao Zhou
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Jun Ma
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Xiaoxiang Liu
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Xuebin Liao
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Amy M. Deveau
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Christine M. Dieckhaus
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904, USA
| | - Michael A. Johnson
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904, USA
| | - Kirsten S. Smith
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904, USA
| | - Timothy L. Macdonald
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904, USA
| | - Hideaki Kakeya
- Antibiotics Laboratory, Discovery Research Institute, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Hiroyuki Osada
- Antibiotics Laboratory, Discovery Research Institute, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - James M. Cook
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
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Usui T. Actin- and microtubule-targeting bioprobes: their binding sites and inhibitory mechanisms. Biosci Biotechnol Biochem 2007; 71:300-8. [PMID: 17284862 DOI: 10.1271/bbb.60516] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Actin filaments and microtubules play important biological functions in mammalian cells, such as mitosis, cytokinesis, cell signaling, intracellular transport, and cell motility. Therefore, small molecules that interact with these cytoskeletons are expected to be useful not only as antitumor agents, but also as tools for understanding a wide variety of the cellular functions of cytoskeletons. A large number of compounds have been reported as anti-microtubule or anti-actin agents, but only a few compounds have been clarified as to their binding sites on target molecules and their inhibition mechanisms. Here, I describe our recent research into anti-actin and anti-microtubule natural products. Some inhibitors contain active moieties, such as alpha,beta-unsaturated delta-lactone or allely epoxide, in their structure, and covalently bind to their target molecules. Furthermore, some compounds show new inhibition mechanisms by binding on novel sites in target molecules.
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Affiliation(s)
- Takeo Usui
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan. usui@sakura@.cc.tsukuba.ac.jp
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He J, Wijeratne EMK, Bashyal BP, Zhan J, Seliga CJ, Liu MX, Pierson EE, Pierson LS, VanEtten HD, Gunatilaka AAL. Cytotoxic and other metabolites of Aspergillus inhabiting the rhizosphere of Sonoran desert plants. JOURNAL OF NATURAL PRODUCTS 2004; 67:1985-1991. [PMID: 15620238 DOI: 10.1021/np040139d] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In a study to discover potential anticancer agents from rhizosphere fungi of Sonoran desert plants cytotoxic EtOAc extracts of four Aspergillus strains have been investigated. Two new metabolites, terrequinone A (1) and terrefuranone (2), along with Na-acetyl aszonalemin (LL-S490beta) (3) were isolated from As. terreus occurring in the rhizosphere of Ambrosia ambrosoides, whereas As. terreus inhabiting the rhizosphere of an unidentified Brickellia sp. afforded dehydrocurvularin (4), 11-methoxycurvularin (5), and 11-hydroxycurvularin (6). As. cervinus isolated from the rhizosphere of Anicasanthus thurberi contained two new compounds, 4R*,5S*-dihydroxy-3-methoxy-5-methylcyclohex-2-enone (7) and 6-methoxy-5(6)-dihydropenicillic acid (8), in addition to penicillic acid (9). Penicillic acid was also isolated from As. wentii occurring in the rhizosphere of Larrea tridentata. The structures of 1-9 were elucidated by spectroscopic methods and chemical derivatizations. Acetylation of 2 afforded 14-acetylterrefuranone (13) and 14-deoxy-13(14)-dehydroterrefuranone (14). Metabolites 1-9, the dienone 14, and 5(6)-dihydropenicillic acid (16) were evaluated for cytotoxicity in a panel of four human cancer cell lines and in normal human primary fibroblast cells. Compounds 4 and 5 displayed considerable cytotoxicity, whereas 1, 6, 9, and 14 were found to be moderately active, with 6 and 9 exhibiting selective cytotoxicity against cancer cell lines compared with the normal fibroblast cells.
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Affiliation(s)
- Jian He
- Southwest Center for Natural Products Research and Commercialization, Office of Arid Lands Studies, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA
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Koizumi Y, Arai M, Tomoda H, Omura S. Oxaline, a fungal alkaloid, arrests the cell cycle in M phase by inhibition of tubulin polymerization. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2004; 1693:47-55. [PMID: 15276324 DOI: 10.1016/j.bbamcr.2004.04.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2003] [Revised: 04/26/2004] [Accepted: 04/30/2004] [Indexed: 11/19/2022]
Abstract
Oxaline and neoxaline, fungal alkaloids, were found to inhibit cell proliferation and to induce cell cycle arrest at the G(2)/M phase in Jurkat cells. CBP501 (a peptide corresponding to amino acids 211-221 of Cdc25C phosphatase), which inhibits the G(2) checkpoint, did not affect the G(2)/M arrest caused by oxaline, suggesting that oxaline causes M phase arrest but not G(2) phase arrest. The Cdc2 phosphorylation level of oxaline-treated cell lysate was lower than that of the control cells, indicating that oxaline arrests the M phase. Oxaline disrupted cytoplasmic microtubule assembly in 3T3 cells. Furthermore, oxaline inhibited polymerization of microtubule protein and purified tubulin dose-dependently in vitro. In a binding competition assay, oxaline inhibited the binding of [(3)H]colchicine to tubulin, but not that of [(3)H]vinblastine. These results indicate that oxaline inhibits tubulin polymerization, resulting in cell cycle arrest at the M phase.
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Affiliation(s)
- Yukio Koizumi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University and The Kitasato Institute, 5-9-1 Shirokane, Minato, Tokyo 108-8641, Japan
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Wijeratne EMK, Turbyville TJ, Zhang Z, Bigelow D, Pierson LS, VanEtten HD, Whitesell L, Canfield LM, Gunatilaka AAL. Cytotoxic constituents of Aspergillus terreus from the rhizosphere of Opuntia versicolor of the Sonoran Desert. JOURNAL OF NATURAL PRODUCTS 2003; 66:1567-1573. [PMID: 14695798 DOI: 10.1021/np030266u] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel cyclopentenedione, asterredione (1), two new terrecyclic acid A derivatives, (+)-5(6)-dihydro-6-methoxyterrecyclic acid A (2) and (+)-5(6)-dihydro-6-hydroxyterrecyclic acid A (3), and five known compounds, (+)-terrecyclic acid A (4), (-)-quadrone (5), betulinan A (6), asterriquinone D (7), and asterriquinone C-1 (8), were isolated from Aspergillus terreus occurring in the rhizosphere of Opuntia versicolor, using bioassay-guided fractionation. Acid-catalyzed reaction of 2 under mild conditions afforded 4, whereas under harsh conditions 2 yielded 5 and (-)-isoquadrone (9). Catalytic hydrogenation and methylation of 4 afforded 5(6)-dihydro-terrecyclic acid A (10) and (+)-terrecyclic acid A methyl ester (11), respectively. The structures of 1-11 were elucidated by spectroscopic methods. All compounds were evaluated for cytotoxicity in a panel of three sentinel cancer cell lines, NCI-H460 (non-small cell lung cancer), MCF-7 (breast cancer), and SF-268 (CNS glioma), and were found to be moderately active. Cell cycle analysis of 2, 4, and 5 using the NCI-H460 cell line indicated that 4 is capable of disrupting the cell cycle through an apparent arrest to progression at the G(1) and G(2)/M phases in this p53 competent cell line. A pathway for the biosynthetic origin of asterredione (1) from asterriquinone D (7) is proposed.
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Affiliation(s)
- E M Kithsiri Wijeratne
- SW Center for Natural Products Research and Commercialization, Office of Arid Lands Studies, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA
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Caballero E, Avendaño C, Menéndez JC. Brief total synthesis of the cell cycle inhibitor tryprostatin B and related preparation of its alanine analogue. J Org Chem 2003; 68:6944-51. [PMID: 12946134 DOI: 10.1021/jo034703l] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tryprostatin B was synthesized in 32% overall yield from the readily available dipeptide anhydride cyclo-(l-Trp-l-Pro). Its tandem C-3 prenylation/cyclization gave the corresponding pentacyclic pyrroloindole systems bearing a prenyl group at the indole C-3 position. These compounds were then submitted to acid-catalyzed opening of the newly formed ring, with concomitant migration of the prenyl group to the indole C-2 position. The alanine analogue of tryprostatin B was also prepared using a similar sequence. The successful implementation of this strategy strengthens the case for a biosynthetic route for the tryprostatins along similar lines.
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Affiliation(s)
- Esmeralda Caballero
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
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Mulzer J, Ohler E. Microtubule-stabilizing marine metabolite laulimalide and its derivatives: synthetic approaches and antitumor activity. Chem Rev 2003; 103:3753-86. [PMID: 12964883 DOI: 10.1021/cr940368c] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Johann Mulzer
- Institut für Organische Chemie der Universität Wien, Währinger Strasse 38, A-1090 Vienna, Austria.
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Ahmed A, Hoegenauer EK, Enev VS, Hanbauer M, Kaehlig H, Ohler E, Mulzer J. Total synthesis of the microtubule stabilizing antitumor agent laulimalide and some nonnatural analogues: the power of Sharpless' asymmetric epoxidation. J Org Chem 2003; 68:3026-42. [PMID: 12688769 DOI: 10.1021/jo026743f] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three different routes are described for the synthesis of deoxylaulimalide (3), which is the immediate precursor of the marine sponge metabolite laulimalide (1). These routes mainly differ with respect to their ring closing step. Thus, route 1 uses a Still-Gennari olefination, route 2 a Yamaguchi lactonization, and route 3 an intramolecular allylsilane-aldehyde addition for establishing the macrocyclic structure. The unprotected deoxy derivative 3 was subjected to Sharpless' asymmetric epoxidation (SAE). With (R,R)-tartrate the 16,17-epoxide laulimalide (1) is formed selectively, whereas (S,S)-tartrate generates the 21,22-epoxide 142. This demonstrates the high reagent control involved in the SAE process, which in this case is used to achieve high stereo- and regioselectivity. Laulimalide and some derivatives thereof have been tested with respect to antitumor activity and compared to standard compounds paclitaxel and epothilone B.
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Affiliation(s)
- Anjum Ahmed
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
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Sebahar PR, Osada H, Usui T, Williams RM. Asymmetric, stereocontrolled total synthesis of (+) and (−)-spirotryprostatin B via a diastereoselective azomethine ylide [1,3]-dipolar cycloaddition reaction. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00630-0] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sanz-Cervera JF, Stocking EM, Usui T, Osada H, Williams RM. Synthesis and evaluation of microtubule assembly inhibition and cytotoxicity of prenylated derivatives of cyclo-L-Trp-L-Pro. Bioorg Med Chem 2000; 8:2407-15. [PMID: 11058035 DOI: 10.1016/s0968-0896(00)00171-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The synthesis of three isoprenylated derivatives of cyclo-L-Trp-L-Pro is described. These substances have been evaluated for cytotoxic activity in rat normal fibroblast 3Y1 cells and have also been evaluated in vitro for the inhibition of microtubule assembly.
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Affiliation(s)
- J F Sanz-Cervera
- Departamento de Química Orgánica, Universidad de Valencia, Spain
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Sebahar PR, Williams RM. The Asymmetric Total Synthesis of (+)- and (−)-Spirotryprostatin B. J Am Chem Soc 2000. [DOI: 10.1021/ja001133n] [Citation(s) in RCA: 389] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul R. Sebahar
- Department of Chemistry, Colorado State University Fort Collins, Colorado 80523
| | - Robert M. Williams
- Department of Chemistry, Colorado State University Fort Collins, Colorado 80523
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Wang H, Ganesan A. The N-Acyliminium Pictet−Spengler Condensation as a Multicomponent Combinatorial Reaction on Solid Phase and Its Application to the Synthesis of Demethoxyfumitremorgin C Analogues. Org Lett 1999. [DOI: 10.1021/ol991030d] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haishan Wang
- Institute of Molecular and Cell Biology, National University of Singapore, 30 Medical Drive, Singapore 117609
| | - A. Ganesan
- Institute of Molecular and Cell Biology, National University of Singapore, 30 Medical Drive, Singapore 117609
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