1
|
Eggert A, Schuppe KT, Fuchs HLS, Brönstrup M, Kalesse M. Total Synthesis of Acanthodoral Using a Rearrangement Strategy. Org Lett 2024; 26:2893-2896. [PMID: 38165657 DOI: 10.1021/acs.orglett.3c03717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
We present the second total synthesis of (±)-acanthodoral, a sesquiterpenoid derived from the marine nudibranch Acanthodoris nanaimoensis. Our approach involves a concise three-step transformation from a previously reported compound, resulting in the formation of a less strained precursor of the bicyclo[3.1.1]heptane core and both all-carbon quaternary stereocenters characteristic of the natural product. Notably, this synthetic route incorporates two pivotal steps: a Sm(II)-induced 1,2-rearrangement and a semipinacol rearrangement.
Collapse
Affiliation(s)
- Alina Eggert
- Institute for Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Karl T Schuppe
- Institute for Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Hazel L S Fuchs
- Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Mark Brönstrup
- Institute for Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
- Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Markus Kalesse
- Institute for Organic Chemistry, Leibniz University Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| |
Collapse
|
2
|
Zheng TL, Huo CY, Bao W, Xu XT, Dai WH, Cheng F, Duan DS, Yang LL, Zhang XM, Zhu DY, Wang SH. Au-Catalyzed Asymmetric Polyene Cyclization and Its Application in the Total Synthesis of (+)-2-Ketoferruginol, (+)-Fleuryinol B, (+)-Salviol, and (-)-Erythroxylisin A. Org Lett 2023; 25:7476-7480. [PMID: 37811851 DOI: 10.1021/acs.orglett.3c02417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A catalytic asymmetric 1,3-acyloxy shift/polyene cyclization cascade has been achieved with good enantioselectivities under the catalysis of the chiral Au(I) reagent. The synthetic utility of this method has been showcased by the catalytic asymmetric total syntheses of (+)-2-ketoferruginol, (+)-fleuryinol B, and (+)-salviol. Notably, the first enantioselective total synthesis of (-)-erythroxylisin A has also been realized in 15 steps.
Collapse
Affiliation(s)
- Tian-Lu Zheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Chen-Yu Huo
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Wen Bao
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Xue-Tao Xu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020,P. R. China
| | - Wei-Hao Dai
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Fu Cheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Dong-Sen Duan
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Le-Le Yang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Xiao-Ming Zhang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Dao-Yong Zhu
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Shao-Hua Wang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020,P. R. China
| |
Collapse
|
3
|
Abstract
Gibberellins (GAs) are important plant hormones, but some of their family members are in extremely limited natural supply including GA18. Herein, we report a concise synthesis of (-)-GA18 methyl ester, a member of the C20 gibberellins, from commercially available and cheap andrographolide. Our synthesis features an intramolecular ene reaction to form the C ring, an oxidative cleavage followed by aldol condensation to realize a ring contraction and form the challenging trans-hydrindane (AB ring), and a photochemical [2+2] cycloaddition accompanied by a subsequent SmI2-mediated skeletal rearrangement to construct the methylenebicyclo[3.2.1]octanol moiety (CD ring).
Collapse
Affiliation(s)
- Lei Li
- Department of Chemistry, Emory University, Atlanta, GA 30322, United States
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, United States
| | - Weida Liang
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, United States
| | - Mario E. Rivera
- Department of Chemistry, Emory University, Atlanta, GA 30322, United States
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, United States
| | - Ye-Cheng Wang
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, United States
| | - Mingji Dai
- Department of Chemistry, Emory University, Atlanta, GA 30322, United States
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, United States
| |
Collapse
|
4
|
Liu Z, Hu J, Ding H. Electrochemical ODI-[5+2] Cascade for the Syntheses of Diversely Functionalized Bicyclo[3.2.1]octane Frameworks. Org Lett 2021; 23:6745-6749. [PMID: 34402626 DOI: 10.1021/acs.orglett.1c02321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A metal- and hypervalent iodine reagent-free electrochemical oxidative dearomatization-induced [5+2] cycloaddition/pinacol rearrangement cascade reaction was described. The electrosynthetic method showed strong tolerance for vinylphenols, ethynylphenols, and allenylphenols, which thus enabled the rapid assembly of diversely functionalized bicyclo[3.2.1]octanes in 41-95% yields and up to >20:1 dr. This protocol could be scaled up to gram amounts and should find wide application in complex natural product synthesis.
Collapse
Affiliation(s)
- Zhaobo Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jialei Hu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| |
Collapse
|
5
|
Abstract
The first total synthesis of (±)-jujuyane, a cyclooctanoid natural product, was accomplished from a (5 + 3) dimerization product of oxidopyrylium ylide that forms the cyclooctanoid core structure along with inherited stereochemical bias. Selective functional group modifications of the highly oxygenated dimeric structure, followed by the tactical functional group manipulation around the eight-membered carbocyclic core, enabled the total synthesis of (±)-jujuyane, which will serve a guide for future applications of oxidopyrylium dimers to the natural product total synthesis.
Collapse
Affiliation(s)
- Sanghyeon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | | | | | - Jiheon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| |
Collapse
|
6
|
Li B, Zhang G, Xu T. Pd‐Catalyzed Regio‐ and Diastereoselective Heck Cyclization to Access Bicyclo[3.2.1]octanone Ring Systems. ChemCatChem 2020. [DOI: 10.1002/cctc.202001089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bo Li
- Key Laboratory of Marine Drugs Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
| | - Guiming Zhang
- Key Laboratory of Marine Drugs Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
| | - Tao Xu
- Key Laboratory of Marine Drugs Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
- Laboratory for Marine Drugs and Bioproducts & Open Studio for Druggability Research of Marine Natural Products Pilot National Laboratory for Marine Science and Technology 1 Wenhai Road Qingdao 266237 P. R. China
| |
Collapse
|
7
|
Ismiyev AI, Shoaib M, Dotsenko VV, Ganbarov KG, Israilova AA, Magerramov AM. Synthesis and Biological Activity of 8-(Dialkylamino)-3-aryl-6-oxo-2,4-dicyanobicyclo[3.2.1]octane-2,4-dicarboxylic Acids Diethyl Esters. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220080071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Dobrijevic D, Benhamou L, Aliev AE, Méndez-Sánchez D, Dawson N, Baud D, Tappertzhofen N, Moody TS, Orengo CA, Hailes HC, Ward JM. Metagenomic ene-reductases for the bioreduction of sterically challenging enones. RSC Adv 2019; 9:36608-36614. [PMID: 35539044 PMCID: PMC9075147 DOI: 10.1039/c9ra06088j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/02/2019] [Indexed: 11/21/2022] Open
Abstract
Ene-reductases (ERs) of the Old Yellow Enzyme family catalyse asymmetric reduction of activated alkenes providing chiral products. They have become an important method in the synthetic chemists' toolbox offering a sustainable alternative to metal-catalysed asymmetric reduction. Development of new biocatalytic alkene reduction routes, however needs easy access to novel biocatalysts. A sequence-based functional metagenomic approach was used to identify novel ERs from a drain metagenome. From the ten putative ER enzymes initially identified, eight exhibited activities towards widely accepted mono-cyclic substrates with several of the ERs giving high reaction yields and stereoselectivities. Two highly performing enzymes that displayed excellent co-solvent tolerance were used for the stereoselective reduction of sterically challenging bicyclic enones where the reactions proceeded in high yields, which is unprecedented to date with wild-type ERs. On a preparative enzymatic scale, reductions of Hajos–Parish, Wieland–Miescher derivatives and a tricyclic ketone proceeded with good to excellent yields. Exceptional organic solvent tolerant ene-reductases mined from a drain metagenome library are highly versatile catalysts for difficult enones.![]()
Collapse
Affiliation(s)
- Dragana Dobrijevic
- Department of Biochemical Engineering
- University College London
- London WC1H 6BT
- UK
| | - Laure Benhamou
- Department of Chemistry
- University College London
- London
- UK
| | - Abil E. Aliev
- Department of Chemistry
- University College London
- London
- UK
| | | | - Natalie Dawson
- Structural and Molecular Biology
- University College London
- London
- UK
| | - Damien Baud
- Department of Chemistry
- University College London
- London
- UK
| | | | - Thomas S. Moody
- Almac
- Department of Biocatalysis & Isotope Chemistry
- Craigavon
- UK
| | | | | | - John M. Ward
- Department of Biochemical Engineering
- University College London
- London WC1H 6BT
- UK
| |
Collapse
|
9
|
Sivaguru P, Wang Z, Zanoni G, Bi X. Cleavage of carbon–carbon bonds by radical reactions. Chem Soc Rev 2019; 48:2615-2656. [DOI: 10.1039/c8cs00386f] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This review provides insights into the in situ generated radicals triggered carbon–carbon bond cleavage reactions.
Collapse
Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Northeast Normal University
- Changchun 130024
- China
| | - Zikun Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Northeast Normal University
- Changchun 130024
- China
| | | | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Northeast Normal University
- Changchun 130024
- China
| |
Collapse
|
10
|
Synthesis of 6,6-dimethyltricyclo[5.4.0.02,8]undecane-2,9-diol for (ent-)longipinane-type sesquiterpenoids using two types of radical cyclization reactions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
11
|
Ismiev AI, Dotsenko VV, Aksenov NA, Mamedova GZ, Magerramov AM. A New Synthetic Approach to Functionalized Bicyclo[3.2.1]octanes. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218070289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|