1
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Zhao KC, Zhuang YY, Jing TH, Shi GH, Guo L, Zhao XL, Lu Y, Liu Y. Pd-catalyzed tandem bis-hydroaminocarbonylation of terminal alkynes for synthesis of N-aryl substituted succinimides with involvement of ionic P, O-hybrid ligand. J Catal 2022. [DOI: 10.1016/j.jcat.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Xue D, Que Y, Shao H, He H, Zhao X, Gao S. Stereoselective Synthesis of the Core Structures of Pyrrocidines and Wortmannines through the Excited-State Nazarov Reactions. Org Lett 2021; 23:2736-2741. [PMID: 33760620 DOI: 10.1021/acs.orglett.1c00643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction conditions and scope of the excited-state Nazarov reaction of dicyclicvinyl ketones were studied. The stereochemistry of this electrocyclization is consistent with the mechanism of the pericyclic reaction and Woodward-Hoffmann rule. UV-light-promoted excited-state Nazarov reactions gave hydrofluorenones bearing a syn-cis configuration via a disrotatory cyclization. The core tricyclic hydrofluorenones of pyrrocidines and wortmannines were constructed via the excited-state Nazarov reactions, which demonstrated their synthetic potential in complex natural product total synthesis.
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Affiliation(s)
- Dongsheng Xue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Yonglei Que
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Hao Shao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Xiaoli Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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3
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Galaverna R, McBride T, Pastre JC, Browne DL. Exploring the generation and use of acylketenes with continuous flow processes. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00072k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The generation and use of acyl ketenes under continuous flow reaction conditions is reported. Several reaction classes of these reactive intermediates have been studied. Under zero headspace conditions, a ketone exchange process is possible between volatile ketones. The process can be readily scaled to deliver gram quantities of product.
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Affiliation(s)
- Renan Galaverna
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
- Institute of Chemistry
| | - Tom McBride
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
| | - Julio C. Pastre
- Institute of Chemistry
- University of Campinas - UNICAMP
- Campinas
- Brazil
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4
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A brief history of antibiotics and select advances in their synthesis. J Antibiot (Tokyo) 2017; 71:153-184. [DOI: 10.1038/ja.2017.62] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/17/2017] [Accepted: 04/23/2017] [Indexed: 12/20/2022]
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5
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Sugata H, Kato R, Tsubogo T, Uchiro H. A Chirality-Returning Sequence for the Synthesis of an Unnatural Isomer of Hirsutellone B. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hayato Sugata
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
| | - Ryo Kato
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
| | - Tetsu Tsubogo
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
- Division of Fusion of Regenerative Medicine with DDS; Research Institute for Science and Technology (RIST); Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
| | - Hiromi Uchiro
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
- Division of Fusion of Regenerative Medicine with DDS; Research Institute for Science and Technology (RIST); Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
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6
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Liu J, Bedell TA, West JG, Sorensen EJ. Design and Synthesis of Molecular Scaffolds with Anti-infective Activity. Tetrahedron 2016; 72:3579-3592. [PMID: 27284210 PMCID: PMC4894353 DOI: 10.1016/j.tet.2016.01.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - T. Aaron Bedell
- Department of Chemistry, Princeton University, Frick Chemical Laboratory, Princeton, New Jersey 08544, USA
| | - Julian G. West
- Department of Chemistry, Princeton University, Frick Chemical Laboratory, Princeton, New Jersey 08544, USA
| | - Erik J. Sorensen
- Department of Chemistry, Princeton University, Frick Chemical Laboratory, Princeton, New Jersey 08544, USA
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7
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Shi Y, Gao S. Recent advances of synthesis of fluorenone and fluorene containing natural products. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.022] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Yang L, Song L, Huang C, Huang M, Liu B. Exploiting ortho-substitution effect on formation of oxygen-containing [10]paracyclophane through ring-closing metathesis. Org Chem Front 2016. [DOI: 10.1039/c5qo00373c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of strained paracyclophanes is facilitated byortho-substitution effect on phenyl ring.
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Affiliation(s)
- Li Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Liqiang Song
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Chong Huang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Mingzheng Huang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
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9
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Toward the synthesis of hirsutellone B via an intramolecular Diels–Alder/ketene-trapping strategy. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.01.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Tadano KI, Nagai S, Yamagishi Y, Shimizu Y, Takao KI. An Access to the 13-Membered Cyclophane Substructure in GKK1032As: An Intramolecular 1,4-Addition Approach. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)55] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Tadano KI. Our recent progress on the intramolecular Diels-Alder reaction approach in natural products synthesis: synthetic studies of the octahydronaphthalene substructure of versipelostatins and the A/B/C-tricyclic substructure of GKK1032s. CHEM REC 2014; 14:623-40. [PMID: 25049071 DOI: 10.1002/tcr.201402008] [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: 02/26/2014] [Indexed: 11/06/2022]
Abstract
During this decade, the enantio- and stereoselective synthesis of natural products has been actively explored in the author's laboratory. In this account, the author outlines practical syntheses of the polycyclic substructures of two novel structurally formidable antibiotics, namely, the trans-fused octahydronaphthalene moiety of versipelostatins and the A/B/C-tricyclic decahydrofluorene moiety of GKK1032s. Both syntheses have been achieved with remarkable regio- and stereoselectivity via intramolecular Diels-Alder reactions using well-designed enantiomeric substrates.
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Affiliation(s)
- Kin-Ichi Tadano
- Department of Applied Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
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12
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Mahidol C, Kittakoop P, Prachyawarakorn V, Pailee P, Prawat H, Ruchirawat S. Recent investigations of bioactive natural products from endophytic, marine-derived, insect pathogenic fungi and Thai medicinal plants. PURE APPL CHEM 2014. [DOI: 10.1515/pac-2013-1206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractLiving organisms in Thailand are very diverse due to the unique geographical location of Thailand. The diversity of Thai bioresources has proven to be a rich source of biologically active compounds. The present review covers bioactive substances from Thai endophytic, marine-derived, insect pathogenic fungi and medicinal plants. Many new compounds isolated from Thai bioresources have diverse skeletons belonging to various classes of natural products. These compounds exhibited an array of biological activities, and some are of pharmaceutical interest. Bioactive compounds from Thai bioresources have not only attracted organic chemists to develop strategies for total synthesis, but also attracted (chemical) biologists to investigate the mechanisms of action. The chemistry and biology of some selected compounds are also discussed in this review.
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Affiliation(s)
- Chulabhorn Mahidol
- 1Chulabhorn Research Institute, Chulabhorn Graduate Institute, and Center of Excellence on Environmental Health and Toxicology (EHT), Kamphang Phet 6 Road, Laksi, Bangkok 10210, Thailand
| | - Prasat Kittakoop
- 1Chulabhorn Research Institute, Chulabhorn Graduate Institute, and Center of Excellence on Environmental Health and Toxicology (EHT), Kamphang Phet 6 Road, Laksi, Bangkok 10210, Thailand
| | - Vilailak Prachyawarakorn
- 1Chulabhorn Research Institute, Chulabhorn Graduate Institute, and Center of Excellence on Environmental Health and Toxicology (EHT), Kamphang Phet 6 Road, Laksi, Bangkok 10210, Thailand
| | - Phanruethai Pailee
- 1Chulabhorn Research Institute, Chulabhorn Graduate Institute, and Center of Excellence on Environmental Health and Toxicology (EHT), Kamphang Phet 6 Road, Laksi, Bangkok 10210, Thailand
| | - Hunsa Prawat
- 1Chulabhorn Research Institute, Chulabhorn Graduate Institute, and Center of Excellence on Environmental Health and Toxicology (EHT), Kamphang Phet 6 Road, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- 1Chulabhorn Research Institute, Chulabhorn Graduate Institute, and Center of Excellence on Environmental Health and Toxicology (EHT), Kamphang Phet 6 Road, Laksi, Bangkok 10210, Thailand
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13
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Reber KP, Tilley SD, Carson CA, Sorensen EJ. Toward a synthesis of hirsutellone B by the concept of double cyclization. J Org Chem 2013; 78:9584-607. [PMID: 24032341 PMCID: PMC3920480 DOI: 10.1021/jo401799f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This account describes a strategy for directly forming three of the six rings found in the polyketide natural product hirsutellone B via a novel cyclization cascade. The key step in our approach comprises two transformations: a large-ring-forming, nucleophilic capture of a transient acylketene and an intramolecular Diels-Alder reaction, both of which occur in tandem through thermolyses of appropriately functionalized, polyunsaturated dioxinones. These thermally induced "double cyclization" cascades generate three new bonds, four contiguous stereocenters, and a significant fraction of the polycyclic architecture of hirsutellone B. The advanced macrolactam and macrolactone intermediates that were synthesized by this process possess key features of the hirsutellone framework, including the stereochemically dense decahydrofluorene core and the strained para-cyclophane ring. However, attempts to complete the carbon skeleton of hirsutellone B via transannular carbon-carbon bond formation were undermined by competitive O-alkylation reactions. This account also documents how we adapted to this undesired outcome through an evaluation of several distinct strategies for synthesis, as well as our eventual achievement of a formal total synthesis of hirsutellone B.
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Affiliation(s)
- Keith P. Reber
- Frick Chemistry Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - S. David Tilley
- Frick Chemistry Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Cheryl A. Carson
- Frick Chemistry Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Erik J. Sorensen
- Frick Chemistry Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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14
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Li XW, Ear A, Nay B. Hirsutellones and beyond: figuring out the biological and synthetic logics toward chemical complexity in fungal PKS-NRPS compounds. Nat Prod Rep 2013; 30:765-82. [PMID: 23640165 DOI: 10.1039/c3np70016j] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: up to early 2013. Fungal polyketides and their hybrid non ribosomal peptide derivatives are characterized by often striking structural features and biological activities. Their diversity and their complexity arise from highly organized and programmable biosynthetic pathways and have been challenged by many synthetic chemists. This review will conceptually illustrate how complexity can be generated, starting from a general biosynthetic purpose (the fundaments of PKS-NRPS assembly lines) and finally showing how the particular class of hirsutellone compounds has emerged from such processes in relation to post-elongation and secondary tailoring events. Synthetic efforts to produce these natural products will be described with a special emphasis on complexity-generating strategies and steps. Thus, the biosynthetic and synthetic works will be analyzed in a continuous flow, focusing on both the logic of Nature and organic chemists.
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Affiliation(s)
- Xu-Wen Li
- Muséum National d'Histoire Naturelle, Molécules de Communication et Adaptation des Micro-organismes (UMR 7245 CNRS-MNHN), 57 rue Cuvier (CP 54), 75005 Paris, France
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15
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Yu X, Sun D. Macrocyclic drugs and synthetic methodologies toward macrocycles. Molecules 2013; 18:6230-68. [PMID: 23708234 PMCID: PMC4374646 DOI: 10.3390/molecules18066230] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/15/2013] [Accepted: 05/20/2013] [Indexed: 01/02/2023] Open
Abstract
Macrocyclic scaffolds are commonly found in bioactive natural products and pharmaceutical molecules. So far, a large number of macrocyclic natural products have been isolated and synthesized. The construction of macrocycles is generally considered as a crucial and challenging step in the synthesis of macrocyclic natural products. Over the last several decades, numerous efforts have been undertaken toward the synthesis of complex naturally occurring macrocycles and great progresses have been made to advance the field of total synthesis. The commonly used synthetic methodologies toward macrocyclization include macrolactonization, macrolactamization, transition metal-catalyzed cross coupling, ring-closing metathesis, and click reaction, among others. Selected recent examples of macrocyclic synthesis of natural products and druglike macrocycles with significant biological relevance are highlighted in each class. The primary goal of this review is to summarize currently used macrocyclic drugs, highlight the therapeutic potential of this underexplored drug class and outline the general synthetic methodologies for the synthesis of macrocycles.
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Affiliation(s)
| | - Dianqing Sun
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA; E-Mail:
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16
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Yue G, Yang L, Yuan C, Du B, Liu B. Total syntheses of lindenane-type sesquiterpenoids: (±)-chloranthalactones A, B, F, (±)-9-hydroxy heterogorgiolide, and (±)-shizukanolide E. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.053] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Tanaka R, Ohishi K, Takanashi N, Nagano T, Suizu H, Suzuki T, Kobayashi S. Synthetic Study of Pyrrocidines: First Entry to the Decahydrofluorene Core of Pyrrocidines. Org Lett 2012; 14:4886-9. [DOI: 10.1021/ol3022116] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryo Tanaka
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Kentaro Ohishi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Noriyuki Takanashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Tomohiko Nagano
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Hiroshi Suizu
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Takahiro Suzuki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Susumu Kobayashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science (RIKADAI), 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
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18
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Gulder T, Baran PS. Strained cyclophane natural products: Macrocyclization at its limits. Nat Prod Rep 2012; 29:899-934. [DOI: 10.1039/c2np20034a] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Senadeera SPD, Wiyakrutta S, Mahidol C, Ruchirawat S, Kittakoop P. A novel tricyclic polyketide and its biosynthetic precursor azaphilone derivatives from the endophytic fungus Dothideomycete sp. Org Biomol Chem 2012; 10:7220-6. [DOI: 10.1039/c2ob25959a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Uchiro H, Kato R, Sakuma Y, Takagi Y, Arai Y, Hasegawa D. Synthetic studies of GKK1032s: the asymmetric synthesis of the decahydrofluorene skeleton via a novel cyclization of silyl enol ether and sequential retro Diels–Alder and intramolecular Diels–Alder reactions. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Uchiro H, Kato R, Arai Y, Hasegawa M, Kobayakawa Y. Total Synthesis of Hirsutellone B via Ullmann-Type Direct 13-Membered Macrocyclization. Org Lett 2011; 13:6268-71. [DOI: 10.1021/ol202748e] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiromi Uchiro
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Ryo Kato
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Yuuki Arai
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Miki Hasegawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Yu Kobayakawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
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22
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Nicolaou KC, Sun YP, Sarlah D, Zhan W, Wu TR. Bioinspired synthesis of hirsutellones A, B, and C. Org Lett 2011; 13:5708-10. [PMID: 21913732 DOI: 10.1021/ol202239u] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The total synthesis of hirsutellones A (1), B (2), and C (3) has been achieved through a bioinspired late-stage sequence starting from advanced intermediate 6. The sequence proceeded via labile intermediate 17,1'-dehydrohirsutellone B (5) and delivered, in addition to the natural products (1-3), hirsutellone analogue 1',2',17-epi-hirsutellone C (1',2',17-epi-3).
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
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23
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Abstract
A total synthesis of (±)-chloranthalactone A was completed. It features substrate-controlled epoxidation of ketone and highly diastereoselective intramolecular cyclopropanation to construct the cis, trans-3/5/6 tricyclic skeleton.
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Affiliation(s)
- Guizhou Yue
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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24
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Tomioka T, Yabe Y, Takahashi T, Simmons TK. DIBAL-mediated reductive transformation of trans-dimethyl tartrate acetonide into ε-hydroxy α,β-unsaturated ester and its derivatives. J Org Chem 2011; 76:4669-74. [PMID: 21526866 DOI: 10.1021/jo200019j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stepwise, selective DIBAL reduction of the acetonide diester derived from tartaric acid followed by the Horner-Emmons reaction effectively provided desymmetrized hydroxy mono-olefination products in a one-pot operation.
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Affiliation(s)
- Takashi Tomioka
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States.
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25
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Halvorsen GT, Roush WR. Stereoselective Synthesis of the Decahydrofluorene Core of the Hirsutellones. Tetrahedron Lett 2011; 52:2072-2075. [PMID: 21503271 DOI: 10.1016/j.tetlet.2010.10.111] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
A stereoselective synthesis of the decahydrofluorene core of the hirsutellones was accomplished in 8 steps and in 43% overall yield. The key step of the synthesis is the highly stereoselective intramolecular Diels-Alder cyclization of the siloxacyclopentene constrained tetraene 1.
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Affiliation(s)
- Geoff T Halvorsen
- Department of Chemistry, Scripps Florida, 130 Scripps Way, Jupiter, FL 33458, USA
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26
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27
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Huang M, Song L, Liu B. Construction of the cyclophane core of the hirsutellones via a RCM strategy. Org Lett 2010; 12:2504-7. [PMID: 20446677 DOI: 10.1021/ol100692x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Construction of the highly strained [10]-paracyclophane core of the hirsutellones has been completed via an effective RCM strategy.
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Affiliation(s)
- Mingzheng Huang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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28
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Nicolaou KC, Sarlah D, Wu TR, Zhan W. Total synthesis of hirsutellone B. Angew Chem Int Ed Engl 2009; 48:6870-4. [PMID: 19685548 DOI: 10.1002/anie.200903382] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- K C Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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Reber KP, Tilley SD, Sorensen EJ. Bond formations by intermolecular and intramolecular trappings of acylketenes and their applications in natural product synthesis. Chem Soc Rev 2009; 38:3022-34. [PMID: 19847338 DOI: 10.1039/b912599j] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactive intermediates known as acylketenes exhibit a rich chemistry and have been extensively utilized for many types of inter- and intramolecular bond-forming reactions within the field of organic synthesis. Characteristic reactions of acylketenes include cycloadditions, carbon-carbon bond-forming reactions, and nucleophilic capture with alcohols or amines to give beta-keto acid derivatives. In particular, the intramolecular capture of acylketene intermediates with pendant nucleophiles represents a powerful method for forming both medium-sized rings and macrocycles, often in high yield. This tutorial review examines the history, generation, and reactivity of acylketenes with a special focus on their applications in the synthesis of natural products.
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