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Shui F, Jia J, Yang X, Zhou Q, Jiang Y, Chen X. Synthesis of (+)-Epoxydon, (-)-Phyllostine, (-)-RKTS 33, and (-)-Parasitenone Featuring Selective Sulfonylation and Oxirane Ring Closure of Aldol Cyclization Products. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000486] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Shui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Junhao Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xing Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Yimin Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
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2
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Das S, Dalal A, Gholap SL. Stereoselective total syntheses of (−)-pseudohygrophorone A12 and (−)-pseudohygrophorone B12. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1708948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sayani Das
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Anu Dalal
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
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3
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Mehta G, Sengupta S. Progress in the total synthesis of epoxyquinone natural products: An update. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Zipfel HF, Carreira EM. A Unified Strategy to 6-5-6-5-6-Membered Epipolythiodiketopiperazines: Studies towards the Total Synthesis of Scabrosin Diacetate and Haematocin. Chemistry 2015; 21:12475-80. [PMID: 26179159 DOI: 10.1002/chem.201500918] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Indexed: 11/11/2022]
Abstract
The family of epipolythiodiketopiperazine (ETP) natural products consists of over 200 members possessing a wide diversity of structures and biological activity. Recently, the subgroup of 6-5-6-5-6-membered ETPs has gained substantial attention, which has resulted in several total syntheses. Despite all the efforts that have been invested into accessing these complex structures, no synthesis of scabrosin diacetate (1 a) and its related esters has been reported. Herein, our attempts towards scabrosin diacetate (1 a) and haematocin (3) starting from diketopiperazine 12 a as a late-stage intermediate are presented. Diketopiperazine 12 a can be conveniently accessed in multigram quantities from aldehyde 18 and diketopiperazine 21 and was envisioned to serve as a general platform for the synthesis of 6-5-6-5-6-membered ETPs.
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Affiliation(s)
- Hannes F Zipfel
- Laboratorium für Organische Chemie, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich (Switzerland)
| | - Erick M Carreira
- Laboratorium für Organische Chemie, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich (Switzerland).
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5
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Bayón P, Figueredo M. The gabosine and anhydrogabosine family of secondary metabolites. Chem Rev 2013; 113:4680-707. [PMID: 23597176 DOI: 10.1021/cr300150w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pau Bayón
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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6
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Kumar M, Qadri M, Sharma PR, Kumar A, Andotra SS, Kaur T, Kapoor K, Gupta VK, Kant R, Hamid A, Johri S, Taneja SC, Vishwakarma RA, Riyaz-Ul-Hassan S, Shah BA. Tubulin inhibitors from an endophytic fungus isolated from Cedrus deodara. JOURNAL OF NATURAL PRODUCTS 2013; 76:194-9. [PMID: 23387901 DOI: 10.1021/np3006666] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
From an endophytic fungus, a close relative of Talaromyces sp., found in association with Cedrus deodara, four compounds including two new ones (2 and 4) were isolated and characterized. The structures of two compounds (1 and 4) were confirmed by X-ray crystallography. The compounds displayed a range of cytotoxicities against human cancer cell lines (HCT-116, A-549, HEP-1, THP-1, and PC-3). All the compounds were found to induce apoptosis in HL-60 cells, as evidenced by fluorescence and scanning electron microscopy studies. Also, the compounds caused significant microtubule inhibition in HL-60 cells.
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Affiliation(s)
- Manjeet Kumar
- Natural Product Microbes, Indian Institute of Integrative Medicine, Canal Road, Jammu-Tawi, India
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7
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Liffert R, Hoecker J, Jana CK, Woods TM, Burch P, Jessen HJ, Neuburger M, Gademann K. Withanolide A: synthesis and structural requirements for neurite outgrowth. Chem Sci 2013. [DOI: 10.1039/c3sc50653c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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8
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Jana CK, Hoecker J, Woods TM, Jessen HJ, Neuburger M, Gademann K. Synthese von Withanolid A, Untersuchung der neuritogenen Eigenschaften und Studien zur Sekretase-Inhibierung. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101869] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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9
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Jana CK, Hoecker J, Woods TM, Jessen HJ, Neuburger M, Gademann K. Synthesis of withanolide A, biological evaluation of its neuritogenic properties, and studies on secretase inhibition. Angew Chem Int Ed Engl 2011; 50:8407-11. [PMID: 21766402 DOI: 10.1002/anie.201101869] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 05/01/2011] [Indexed: 02/07/2023]
Affiliation(s)
- Chandan Kumar Jana
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel, Switzerland
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Toribio G, Marjanet G, Alibés R, de March P, Font J, Bayón P, Figueredo M. Divergent Approach to Gabosines and Anhydrogabosines: Enantioselective Syntheses of (+)-Epiepoformin, (+)-EpoKformin, (+)-Gabosine A, and Gabosines B and F. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001527] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Mohamed IE, Kehraus S, Krick A, König GM, Kelter G, Maier A, Fiebig HH, Kalesse M, Malek NP, Gross H. Mode of action of epoxyphomalins A and B and characterization of related metabolites from the marine-derived fungus Paraconiothyrium sp. JOURNAL OF NATURAL PRODUCTS 2010; 73:2053-2056. [PMID: 21114274 DOI: 10.1021/np100310k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Epoxyphomalins A (1) and B (2) are highly potent cytotoxic fungal metabolites. During the course of purifying larger quantities of 1 and 2 from Paraconiothyrium sp. fermentation extracts, three new epoxyphomalins (3-5) were isolated and characterized, showing modifications to the oxidation pattern of the cyclohexene moiety or of C-9 of the decalin system. IC(50) values for cytotoxicity against a panel of 36 human tumor cell lines were determined for all new compounds. Compound 4 was found to be cytotoxic particularly toward prostate PC3M (IC(50) = 0.72 μM) and bladder BXF 1218 L (IC(50) = 1.43 μM) cancer cell lines. In addition, inhibition of chymotrypsin-, caspase-, and trypsin-like activity of purified 20S proteasomes was determined for epoxyphomalins A (1) and B (2). The results indicate that compounds 1 and 2 exert their cytotoxic effect through potent inhibition of the 20S proteasome.
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Zottig VE, Todd MA, Nichols-Nielander AC, Harrison DP, Sabat M, Myers WH, Harman WD. Epoxidation, Cyclopropanation, and Electrophilic Addition Reactions at the meta Position of Phenol and meta-Cresol. Organometallics 2010. [DOI: 10.1021/om901017d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victor E. Zottig
- Department of Chemistry, University
of Virginia, Charlottesville, Virginia 22904
| | - Michael A. Todd
- Department of Chemistry, University
of Virginia, Charlottesville, Virginia 22904
| | | | - Daniel P. Harrison
- Department of Chemistry, University
of Virginia, Charlottesville, Virginia 22904
| | - Michal Sabat
- Department of Chemistry, University
of Virginia, Charlottesville, Virginia 22904
| | - William H. Myers
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - W. Dean Harman
- Department of Chemistry, University
of Virginia, Charlottesville, Virginia 22904
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Gholap SL, Woo CM, Ravikumar PC, Herzon SB. Synthesis of the Fully Glycosylated Cyclohexenone Core of Lomaiviticin A. Org Lett 2009; 11:4322-5. [DOI: 10.1021/ol901710b] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Christina M. Woo
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
| | - P. C. Ravikumar
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
| | - Seth B. Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
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14
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Bräse S, Encinas A, Keck J, Nising CF. Chemistry and Biology of Mycotoxins and Related Fungal Metabolites. Chem Rev 2009; 109:3903-90. [DOI: 10.1021/cr050001f] [Citation(s) in RCA: 411] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Stefan Bräse
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Arantxa Encinas
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Julia Keck
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Carl F. Nising
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
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Marco-Contelles J, Molina MT, Anjum S. Naturally occurring cyclohexane epoxides: sources, biological activities, and synthesis. Chem Rev 2005; 104:2857-99. [PMID: 15186183 DOI: 10.1021/cr980013j] [Citation(s) in RCA: 205] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José Marco-Contelles
- Laboratorio de Radicales Libres (IQOG, CSIC), C/Juan de la Cierva, 3, 28006-Madrid, Spain
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Mehta G, Islam K. Enantioselective total synthesis of epoxyquinone natural products (−)-phyllostine, (+)-epoxydon, (+)-epiepoxydon and (−)-panepophenanthrin: access to versatile chiral building blocks through enzymatic kinetic resolution. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.08.104] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Okamura H, Shimizu H, Yamashita N, Iwagawa T, Nakatani M. Total synthesis of (+)-epiepoformin and (−)-phyllostine. Tetrahedron 2003. [DOI: 10.1016/j.tet.2003.10.065] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Barros MT, Matias PM, Maycock CD, Ventura MR. Aziridines as a Protecting and Directing Group. Stereoselective Synthesis of (+)-Bromoxone. Org Lett 2003; 5:4321-3. [PMID: 14601990 DOI: 10.1021/ol035576i] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] The directing ability of an aziridine group for the epoxidation of adjacent double bonds is demonstrated. The aziridine group is also used to effectively protect a double bond in a cycloenone system for a short synthesis of the title compound.
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Affiliation(s)
- M Teresa Barros
- Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2825 Monte da Caparica, Portugal
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Barros MT, Maycock CD, Ventura MR. The First Synthesis of (−)-Asperpentyn and Efficient Syntheses of (+)-Harveynone, (+)-Epiepoformin and (−)-Theobroxide. Chemistry 2000. [DOI: 10.1002/1521-3765(20001103)6:21<3991::aid-chem3991>3.0.co;2-v] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Ochoa ME, Arias MS, Aguilar R, Delgado F, Tamariz J. Captodative olefin 3-p-nitrobenzoyloxy-3-buten-2-one asa diels-alder ketene equivalent for the synthesisof γ-hydroxycyclohexenones. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00928-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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