1
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Zhang W, Yu PC, Feng CY, Li CC. Asymmetric Total Synthesis of Pedrolide. J Am Chem Soc 2024; 146:2928-2932. [PMID: 38289153 DOI: 10.1021/jacs.3c14150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
The asymmetric total synthesis of pedrolide (>200 mg) with an unprecedented [5-5-5-6-6-3] hexacyclic core (pedrolane) was achieved. Its unique bicyclo[2.2.1]heptane ring system was efficiently constructed via an enantioselective ene reaction of cyclopentadiene followed by a Wittig reaction, isomerization, and a diastereoselective intramolecular Diels-Alder reaction cascade. The highly oxygenated carane [6-3] ring system was synthesized via a ring-closing metathesis reaction followed by an unusual free carbene cyclopropanation. Furthermore, the 12 contiguous stereocenters of pedrolide were installed diastereoselectively.
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Affiliation(s)
- Wen Zhang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peng-Cheng Yu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chen-Yun Feng
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518132, China
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2
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Huck CJ, Boyko YD, Sarlah D. Dearomative logic in natural product total synthesis. Nat Prod Rep 2022; 39:2231-2291. [PMID: 36173020 PMCID: PMC9772301 DOI: 10.1039/d2np00042c] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Covering: 2011 to 2022The natural world is a prolific source of some of the most interesting, rare, and complex molecules known, harnessing sophisticated biosynthetic machinery evolved over billions of years for their production. Many of these natural products represent high-value targets of total synthesis, either for their desirable biological activities or for their beautiful structures outright; yet, the high sp3-character often present in nature's molecules imparts significant topological complexity that pushes the limits of contemporary synthetic technology. Dearomatization is a foundational strategy for generating such intricacy from simple materials that has undergone considerable maturation in recent years. This review highlights the recent achievements in the field of dearomative methodology, with a focus on natural product total synthesis and retrosynthetic analysis. Disconnection guidelines and a three-phase dearomative logic are described, and a spotlight is given to nature's use of dearomatization in the biosynthesis of various classes of natural products. Synthetic studies from 2011 to 2021 are reviewed, and 425 references are cited.
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Affiliation(s)
| | - Yaroslav D. Boyko
- Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - David Sarlah
- Department of Chemistry, University of Illinois, Urbana, IL 61801, USA,Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
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3
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Vasilev VH, Spessert L, Yu K, Maimone TJ. Total Synthesis of Resiniferatoxin. J Am Chem Soc 2022; 144:16332-16337. [PMID: 36043948 DOI: 10.1021/jacs.2c08200] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
From both structural and functional perspectives, the large family of daphnane diterpene orthoesters (DDOs) represent a truly remarkable class of natural products. As potent lead compounds for the treatment of pain, neurodegeneration, HIV/AIDS, and cancer, their medicinal potential continues to be heavily investigated, yet synthetic routes to DDO natural products remain rare. Herein we report a distinct approach to this class of complex diterpenes, highlighted by a 15-step total synthesis of the flagship DDO, resiniferatoxin.
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Affiliation(s)
- Vasil H Vasilev
- Department of Chemistry, University of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Lukas Spessert
- Department of Chemistry, University of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Kuan Yu
- Department of Chemistry, University of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Thomas J Maimone
- Department of Chemistry, University of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
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4
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Abstract
Herein, we report an enantioselective and convergent total synthesis of (+)-pepluanol A, a structurally intriguing Euphorbia diterpenoid natural product featuring a 5/6/7/3-fused tetracyclic skeleton, from known building blocks in 11 steps. The successful strategy relies on a phenyl selenide-mediated Morita-Baylis-Hillman type reaction as a connective step, forging the precursor for the key intramolecular Diels-Alder reaction to construct the congested 5/6/7-tricyclic framework. A diastereoconvergent cascade starting with an acid-induced removal of the C1-MOM protecting group followed by a retro-aldol/aldol reaction resulted in the formation of a single diastereomer. This stereoconvergency allowed for the successful substrate-controlled diastereoselective cyclopropanation of an advanced intermediate to establish the full carboskeleton of (+)-pepluanol A (1).
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Affiliation(s)
- Po Yuan
- Institute of Organic Chemistry, University of Konstanz, Universitätsstrasse 10, Konstanz 78464, Germany
| | - Tanja Gaich
- Institute of Organic Chemistry, University of Konstanz, Universitätsstrasse 10, Konstanz 78464, Germany
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5
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Abstract
Terpenoids constitute a broad class of natural compounds with tremendous variability in structure and bioactivity, which resulted in a strong interest of the chemical community to this class of natural products over the last 150 years. The presence of strained small rings renders the terpenoid targets interesting for chemical synthesis, due to limited number of available methods and stability issues. In this feature article, a number of recent examples of total syntheses of terpenoids with complex carbon frameworks featuring small rings are discussed. Specific emphasis is given to the new developments in strategical and tactical approaches to construction of such systems.
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Affiliation(s)
- Gleb A Chesnokov
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Karl Gademann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
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6
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Yuan P, Gerlinger CKG, Herberger J, Gaich T. Ten-Step Asymmetric Total Synthesis of (+)-Pepluanol A. J Am Chem Soc 2021; 143:11934-11938. [PMID: 34324326 DOI: 10.1021/jacs.1c05257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first asymmetric synthesis of pepluanol A (1) is presented. The synthesis route is very concise (10 steps) and features a Curtin-Hammett-driven stereoconvergent intramolecular Diels-Alder reaction. A Nozaki-Hiyama-Kishi reaction comprises the connective step, bringing together the seven-membered enone system bearing the dienophile and the diene in the side chain. Subsequent stereoconvergent IMDA reaction furnishes the carboskeleton of the natural product in only 7 steps. The reactions were carried out on a gram scale up to an advanced intermediate and including the stereoconvergent intramolecular Diels-Alder reaction.
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Affiliation(s)
- Po Yuan
- Institute of Organic Chemistry, University of Konstanz, Universitätsstrasse 10, Konstanz 78464, Germany
| | - Christa K G Gerlinger
- Institute of Organic Chemistry, University of Konstanz, Universitätsstrasse 10, Konstanz 78464, Germany
| | - Jan Herberger
- Institute of Inorganic Chemistry, University of Konstanz, Universitätsstrasse 10, Konstanz 78464, Germany
| | - Tanja Gaich
- Institute of Organic Chemistry, University of Konstanz, Universitätsstrasse 10, Konstanz 78464, Germany
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7
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Gao K, Hu J, Ding H. Tetracyclic Diterpenoid Synthesis Facilitated by ODI-Cascade Approaches to Bicyclo[3.2.1]octane Skeletons. Acc Chem Res 2021; 54:875-889. [PMID: 33508196 DOI: 10.1021/acs.accounts.0c00798] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Tetracyclic diterpenoids (C20) mainly refer to the plant terpenoids bearing biogenetically related carbon skeletons derived from copalyl diphosphates (ent-CPP and syn-CPP). This large family contains over 1600 known members that can be categorized into 11 major structural types. Among them, more than three-quarters share a bridged bicyclo[3.2.1]octane subunit, which is also an important branching point in biosynthesis en route to the other types of bicyclic scaffolds, such as bicyclo[2.2.2]-, bicyclo[3.3.0]-, and tricyclo[3.2.1.0]octanes. Combined with the significance of its stereochemical importance in biological activity, the assembly of the bicyclo[3.2.1]octane skeletons is critical to the success of the whole synthesis blueprint toward tetracyclic diterpenoids. Although a number of inspiring methodologies have been disclosed, general approaches by the incorporation of innovative cascade reactions permitting access to diverse structural types of tetracyclic diterpenoids remain limited and in urgent demand.Because of the long-standing interest in the synthesis of bridged diterpenoids, we have recently developed two complementary types of oxidative dearomatization induced (ODI) cascade approaches to the rapid and efficient construction of bicyclo[3.2.1]octane skeletons. In this Account, we summarize our original synthesis design, methodology development, and the application of these two strategies in tetracyclic diterpenoid synthesis during the past few years in our laboratory.First, we detail our preliminary investigation of the ODI-[5 + 2] cycloaddition/pinacol rearrangement cascade reaction, which showed a wide scope of vinylphenol substrates and led to cyclopentane and cyclohexane-fused bicyclo[3.2.1]octanes in good yields with excellent dr values. Next, we describe the utilization of this ODI-[5 + 2] cascade reaction which resulted in the asymmetric total syntheses of four highly oxygenated ent-kauranoids. The strategy concerning accurate stereochemical control in the ODI-[5 + 2] cycloaddition was then successfully transplanted to the total syntheses of three stemaranoids, thus providing a straightforward and diastereoselective route to C9-ethano-bridged tetracyclic diterpenoids. To access more complex diterpenoid rhodomollanol A, we exploited two additional biomimetic rearrangements, namely, the retro-Dieckmann fragmentation/vinylogous Dieckmann cyclization cascade and the photo-Nazarov cyclization/intramolecular cycloetherification cascade. Taken together with the ODI-[5 + 2] cascade, the asymmetric total synthesis of the target molecule was realized, which shed light on the biogenetic pathway of the unprecedented rhodomollane-type carbon framework. Finally, we describe an ODI-Diels-Alder/Beckwith-Dowd cascade approach as a valuable supplement to the ODI-[5 + 2] cascade for the fabrication of cycloheptane-fused bicyclo[3.2.1]octane skeletons. Its versatility was also demonstrated by the total syntheses of two challenging grayanane diterpenoids. In view of the high functional-group compatibility and scalability, we anticipate that the two novel cascade approaches will find further use in the field of complex natural product synthesis.
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Affiliation(s)
- Kai Gao
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou 318000, China
| | - Jialei Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou 318000, China
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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8
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Additions of N, O, and S heteroatoms to metal-supported carbenes: Mechanism and synthetic applications in modern organic chemistry. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2021. [DOI: 10.1016/bs.adomc.2021.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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9
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Zhang J, Liu M, Wu C, Zhao G, Chen P, Zhou L, Xie X, Fang R, Li H, She X. Total Synthesis of (−)‐Pepluanol B: Conformational Control of the Eight‐Membered‐Ring System. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915876] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jing Zhang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Meng Liu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Chuanhua Wu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Gaoyuan Zhao
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Peiqi Chen
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Lin Zhou
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Huilin Li
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
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10
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Zhang J, Liu M, Wu C, Zhao G, Chen P, Zhou L, Xie X, Fang R, Li H, She X. Total Synthesis of (−)‐Pepluanol B: Conformational Control of the Eight‐Membered‐Ring System. Angew Chem Int Ed Engl 2020; 59:3966-3970. [DOI: 10.1002/anie.201915876] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Indexed: 02/03/2023]
Affiliation(s)
- Jing Zhang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Meng Liu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Chuanhua Wu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Gaoyuan Zhao
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Peiqi Chen
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Lin Zhou
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Huilin Li
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou 730000 Gansu P. R. China
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11
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12
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Xuan J, Zhu A, Ma B, Ding H. Diastereoselective Synthesis of the Hydroperoxide-Keto Form of (±)-Steenkrotin B. Org Lett 2018; 20:4153-4156. [PMID: 29947520 DOI: 10.1021/acs.orglett.8b01875] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A diastereoselective approach for the synthesis of the hydroperoxide-keto form of (±)-steenkrotin B (2') is described. The key features of the strategy involve a Diels-Alder cycloaddition, a titanium(III)-catalyzed reductive annulation, and a regio- and diastereoselective hydroperoxidation.
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Affiliation(s)
- Jun Xuan
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , P. R. China
| | - An Zhu
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , P. R. China
| | - Binjie Ma
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , P. R. China
| | - Hanfeng Ding
- Department of Chemistry , Zhejiang University , Hangzhou 310058 , P. R. China
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13
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Bartels F, Hong YJ, Ueda D, Weber M, Sato T, Tantillo DJ, Christmann M. Bioinspired synthesis of pentacyclic onocerane triterpenoids. Chem Sci 2017; 8:8285-8290. [PMID: 29619174 PMCID: PMC5858022 DOI: 10.1039/c7sc03903d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/14/2017] [Indexed: 01/23/2023] Open
Abstract
The first chemical synthesis of pentacyclic onocerane triterpenoids (+)-cupacinoxepin and (+)-onoceranoxide is described.
The first chemical synthesis of pentacyclic onocerane triterpenoids has been achieved. A putative biomimetic tricyclization cascade is employed to forge a fused decalin-/oxepane ring system. The synthetic route proceeds to (+)-cupacinoxepin in seven steps and to (+)-onoceranoxide in eight steps in the longest linear sequence, when starting from geranyl chloride and (+)-sclareolide. The bioinspired epoxypolyene cyclization is supported by computational and enzymatic studies.
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Affiliation(s)
- Florian Bartels
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
| | - Young J Hong
- Department of Chemistry , University of California-Davis , Davis , California 95616 , USA .
| | - Daijiro Ueda
- Department of Applied Biological Chemistry , Graduate School of Science and Technology , Niigata University , Ikarashi 2-8050, Nishi-ku , Niigata 950-2181 , Japan .
| | - Manuela Weber
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
| | - Tsutomu Sato
- Department of Applied Biological Chemistry , Graduate School of Science and Technology , Niigata University , Ikarashi 2-8050, Nishi-ku , Niigata 950-2181 , Japan .
| | - Dean J Tantillo
- Department of Chemistry , University of California-Davis , Davis , California 95616 , USA .
| | - Mathias Christmann
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
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14
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Abstract
Starting from (R)-citronellic acid and (R)-seudenol, the total synthesis of (+)-aplykurodinone-1, a highly degraded marine steroid, has been achieved in 11 steps and in 19% overall yield with excellent stereochemical control. In addition to the features such as an Ireland-Claisen rearrangement, an intramolecular carbonyl-ene cyclization, and an intramolecular Michael addition, the present synthetic strategy is accomplished without the use of protecting groups.
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Affiliation(s)
- Bo Xu
- Guangzhou Institute of Biomedicine and Health, The University of the Chinese Academy of Sciences , 190 Kaiyuan Avenue, The Science Park of Guangzhou, Guangdong 510530, China
| | - Wen Xun
- Guangzhou Institute of Biomedicine and Health, The University of the Chinese Academy of Sciences , 190 Kaiyuan Avenue, The Science Park of Guangzhou, Guangdong 510530, China
| | - Tingzhong Wang
- The Bestsyn Technologies, 188 Kaiyuan Avenue, The Science Park of Guangzhou, Guangdong 510530, China
| | - Fayang G Qiu
- Guangzhou Institute of Biomedicine and Health, The University of the Chinese Academy of Sciences , 190 Kaiyuan Avenue, The Science Park of Guangzhou, Guangdong 510530, China.,Key Lab of Functional Molecular Engineering of Guangdong Province, South China University of Technology , 188 Kaiyuan Avenue, The Science Park of Guangzhou, Guangdong 510530, China.,The Bestsyn Technologies, 188 Kaiyuan Avenue, The Science Park of Guangzhou, Guangdong 510530, China
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15
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Jiang XL, Shi Y, Tian WS. Synthesis of 18-Demethoxy Analogues of the Aglycon of Saundersiosides A and B, Based on a Cascade Process. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiao-Ling Jiang
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Yong Shi
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Wei-Sheng Tian
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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16
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Xuan J, Liu Z, Zhu A, Rao P, Yu L, Ding H. Diastereoselective Total Synthesis of the Euphorbia
Diterpenoid Pepluanol A: A Reductive Annulation Approach. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704929] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jun Xuan
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - Zhaobo Liu
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - An Zhu
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - Peirong Rao
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - Lei Yu
- School of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 China
| | - Hanfeng Ding
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
- State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
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17
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Xuan J, Liu Z, Zhu A, Rao P, Yu L, Ding H. Diastereoselective Total Synthesis of the Euphorbia
Diterpenoid Pepluanol A: A Reductive Annulation Approach. Angew Chem Int Ed Engl 2017; 56:8898-8901. [DOI: 10.1002/anie.201704929] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/01/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Jun Xuan
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - Zhaobo Liu
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - An Zhu
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - Peirong Rao
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
| | - Lei Yu
- School of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 China
| | - Hanfeng Ding
- Department of Chemistry; Zhejiang University; Hangzhou 310058 China
- State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
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18
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Affiliation(s)
- Christian Ebner
- Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Erick M. Carreira
- Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
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19
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He C, Hu J, Wu Y, Ding H. Total Syntheses of Highly Oxidized ent-Kaurenoids Pharicin A, Pharicinin B, 7-O-Acetylpseurata C, and Pseurata C: A [5+2] Cascade Approach. J Am Chem Soc 2017; 139:6098-6101. [DOI: 10.1021/jacs.7b02746] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Chi He
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jialei Hu
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yubing Wu
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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20
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21
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de la Torre A, Cuyamendous C, Bultel-Poncé V, Durand T, Galano JM, Oger C. Recent advances in the synthesis of tetrahydrofurans and applications in total synthesis. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.076] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Loh CCJ, Schmid M, Peters B, Fang X, Lautens M. Exploiting Distal Reactivity of Coumarins: A Rhodium-Catalyzed Vinylogous Asymmetric Ring-Opening Reaction. Angew Chem Int Ed Engl 2016; 55:4600-4. [DOI: 10.1002/anie.201600654] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Charles C. J. Loh
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Matthias Schmid
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Brendan Peters
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Xiang Fang
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Laboratory for Advanced Material and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Mark Lautens
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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Loh CCJ, Schmid M, Peters B, Fang X, Lautens M. Exploiting Distal Reactivity of Coumarins: A Rhodium-Catalyzed Vinylogous Asymmetric Ring-Opening Reaction. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600654] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Charles C. J. Loh
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Matthias Schmid
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Brendan Peters
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Xiang Fang
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Laboratory for Advanced Material and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Mark Lautens
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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Wang J, Wei X, Qin X, Tian X, Liao L, Li K, Zhou X, Yang X, Wang F, Zhang T, Tu Z, Chen B, Liu Y. Antiviral Merosesquiterpenoids Produced by the Antarctic Fungus Aspergillus ochraceopetaliformis SCSIO 05702. JOURNAL OF NATURAL PRODUCTS 2016; 79:59-65. [PMID: 26697718 DOI: 10.1021/acs.jnatprod.5b00650] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Five new highly oxygenated α-pyrone merosesquiterpenoids, ochraceopones A-E (1-5), together with one new double bond isomer of asteltoxin, isoasteltoxin (6), and two known asteltoxin derivatives, asteltoxin (7) and asteltoxin B (8), were isolated from an Antarctic soil-derived fungus, Aspergillus ochraceopetaliformis SCSIO 05702. Their structures were determined through extensive spectroscopic analysis, CD spectra, quantum mechanical calculations, and X-ray single-crystal diffraction. Ochraceopones A-D (1-4) are the first examples of α-pyrone merosesquiterpenoids possessing a linear tetracyclic carbon skeleton, which has not been previously described. All the isolated compounds were tested for their antiviral, cytotoxic, antibacterial, and antitubercular activities. Among these compounds, ochraceopone A (1), isoasteltoxin (6), and asteltoxin (7) exhibited antiviral activities against the H1N1 and H3N2 influenza viruses with IC50 values of >20.0/12.2 ± 4.10, 0.23 ± 0.05/0.66 ± 0.09, and 0.54 ± 0.06/0.84 ± 0.02 μM, respectively. A possible biosynthetic pathway for ochraceopones A-E (1-5) was proposed.
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Affiliation(s)
- Junfeng Wang
- 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 510301, People's Republic of China
| | - Xiaoyi Wei
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences , Guangzhou 510650, People's Republic of China
| | - Xiaochu Qin
- Laboratory of Molecular Engineering and Laboratory of Natural Product Synthesis, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , Guangzhou 510530, People's Republic of China
| | - Xinpeng Tian
- 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 510301, People's Republic of China
| | - Li Liao
- SOA Key Laboratory for Polar Science, Polar Research Institute of China , Shanghai 200136, People's Republic of China
| | - Kemin Li
- Laboratory of Molecular Engineering and Laboratory of Natural Product Synthesis, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , Guangzhou 510530, People's Republic of China
| | - Xuefeng Zhou
- 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 510301, People's Republic of China
| | - Xianwen Yang
- 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 510301, People's Republic of China
| | - Fazuo Wang
- 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 510301, People's Republic of China
| | - Tianyu Zhang
- Laboratory of Molecular Engineering and Laboratory of Natural Product Synthesis, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , Guangzhou 510530, People's Republic of China
| | - Zhengchao Tu
- Laboratory of Molecular Engineering and Laboratory of Natural Product Synthesis, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , Guangzhou 510530, People's Republic of China
| | - Bo Chen
- SOA Key Laboratory for Polar Science, Polar Research Institute of China , Shanghai 200136, People's Republic of China
| | - Yonghong Liu
- 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 510301, People's Republic of China
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25
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Thumar N, Wei Q, Hu W. Recent Advances in Asymmetric Metal-Catalyzed Carbene Transfer from Diazo Compounds Toward Molecular Complexity. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.08.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Pan S, Gao B, Hu J, Xuan J, Xie H, Ding H. Enantioselective Total Synthesis of (+)-Steenkrotin A and Determination of Its Absolute Configuration. Chemistry 2015; 22:959-70. [DOI: 10.1002/chem.201503831] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Saiyong Pan
- Department of Chemistry; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 P.R. China
| | - Beiling Gao
- Department of Chemistry; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 P.R. China
| | - Jialei Hu
- Department of Chemistry; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 P.R. China
| | - Jun Xuan
- Department of Chemistry; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 P.R. China
| | - Hujun Xie
- College of Material; Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
| | - Hanfeng Ding
- Department of Chemistry; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 P.R. China
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Wang Y, Qi S, Zhan Y, Zhang N, Wu AA, Gui F, Guo K, Yang Y, Cao S, Hu Z, Zheng Z, Song S, Xu Q, Shen Y, Deng X. Aspertetranones A-D, Putative Meroterpenoids from the Marine Algal-Associated Fungus Aspergillus sp. ZL0-1b14. JOURNAL OF NATURAL PRODUCTS 2015; 78:2405-2410. [PMID: 26378981 DOI: 10.1021/acs.jnatprod.5b00487] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Aspertetranones A-D (1-4), four new highly oxygenated putative rearranged triketide-sesquiterpenoid meroterpenes, were isolated from the marine algal-associated fungus Aspergillus sp. ZL0-1b14. On the basis of a comprehensive spectroscopic analysis, the planar structures of aspertetranones were determined to possess an unusual skeleton in the terpenoid part. The relative and absolute configurations of the aspertetranones were assigned on the basis of NOESY analysis, X-ray crystallography, and circular dichroism spectroscopy. Compounds 1-4 were evaluated for anti-inflammatory activity in LPS-stimulated RAW264.7 macrophages. Aspertetranone D exhibited an inhibitory effect against IL-6 production with 69% inhibition at 40 μM.
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Affiliation(s)
| | | | | | - Nanwen Zhang
- Department of Pharmacology, School of Pharmacy, Fujian Medical University , Fuzhou, Fujian 350108, China
| | - An-An Wu
- State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry , Xiamen, Fujian China
| | | | | | | | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo , 924 Stainback Hwy, Hilo, Hawaii 96720, United States
- Natural Products and Experimental Therapeutics, Cancer Center, University of Hawai'i at Manoa , 701 Ilalo Street, Honolulu, Hawaii 96813, United States
| | | | | | | | | | - Yuemao Shen
- School of Pharmaceutical Sciences, Shandong University , Jinan, Shandong 250012, China
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