1
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Peng C, Guo Q, Xu GX, Huo L, Wu W, Chen TY, Hong X, Hu P. Divergent Synthesis of Scabrolide A and Havellockate via an exo- exo- endo Radical Cascade. J Am Chem Soc 2024; 146:14422-14426. [PMID: 38709624 DOI: 10.1021/jacs.4c03995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Here we report a concise and divergent synthesis of scabrolide A and havellockate, representative members of polycyclic marine natural product furano(nor)cembranoids. The synthesis features a highly efficient exo-exo-endo radical cascade. Through the generation of two rings, three C-C bonds, and three contiguous stereocenters in one step, this remarkable transformation not only assembles the bowl-shaped, common 6-5-5 fused ring system from simple building blocks but also precisely installs the functionalities at desired positions and sets the stage for further divergent preparation of both target molecules. Further studies reveal that the robust and unusual 6-endo radical addition in the cascade is likely facilitated by the rigidity of the substrate.
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Affiliation(s)
- Chen Peng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, and Research Center for Industries of the Future, Westlake University, Hangzhou, 310030, China
| | - Quanping Guo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, and Research Center for Industries of the Future, Westlake University, Hangzhou, 310030, China
| | - Guo-Xiong Xu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Luqiong Huo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, and Research Center for Industries of the Future, Westlake University, Hangzhou, 310030, China
| | - Weilin Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, and Research Center for Industries of the Future, Westlake University, Hangzhou, 310030, China
| | - Tian-Yi Chen
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Pengfei Hu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, and Research Center for Industries of the Future, Westlake University, Hangzhou, 310030, China
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2
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Zong J, Christensen KE, Robertson J. Routes to Advanced Intermediates in the Synthesis of Tetracarbocyclic Sesquiterpenoids Daphnenoid A and Artatrovirenols A and B. Org Lett 2024; 26:1556-1560. [PMID: 38373293 PMCID: PMC10913076 DOI: 10.1021/acs.orglett.3c04199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/19/2024] [Accepted: 02/14/2024] [Indexed: 02/21/2024]
Abstract
A short route from dihydrocarvone is described, which led to the tetracarbocyclic core common to artatrovirenol A and B and daphnenoid A. A variant of this route afforded guaia-4,6-dien-3-one (from Enterospermum madagascarensis) and its epimer. From 2-(2-oxoethyl)furan, a 15-step sequence then delivered the complete carbon skeleton and all functionality necessary for daphnenoid A. Key steps in the route include diastereoselective intramolecular oxidopyrylium cycloaddition, oxa-bridge cleavage under "push-pull" conditions, and intramolecular Diels-Alder cycloaddition.
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Affiliation(s)
- Jiarui Zong
- Department of Chemistry, University
of Oxford, Chemistry Research
Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Kirsten E. Christensen
- Department of Chemistry, University
of Oxford, Chemistry Research
Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Jeremy Robertson
- Department of Chemistry, University
of Oxford, Chemistry Research
Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
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3
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Yu X, Xiao L, Luo T. Enantioselective Total Synthesis of (-)-Vinigrol: The Evolution of a Transannular Diels-Alder Strategy. J Org Chem 2024; 89:1709-1718. [PMID: 38204139 DOI: 10.1021/acs.joc.3c02407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Vinigrol is a structurally and stereochemically complex diterpenoid that displays various potent pharmacological activities. Two generations of synthetic routes were designed and pursued based on a transannular Diels-Alder (TADA) cycloaddition strategy. An intramolecular [2 + 2]photocycloaddition in the presence of the chelating Lewis acid (MgBr2·Et2O) was first discovered to enable the reaction of sterically challenging substrates, which was followed by [2 + 2]cycloreversion to provide α-pyrones fused with a 10-membered ring. Eventually, a new and scalable synthetic route toward (-)-vinigrol was developed and provided over 600 mg materials, manifesting the power of macrocyclic stereocontrol and TADA reaction.
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Affiliation(s)
- Xuerong Yu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Lianghong Xiao
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Tuoping Luo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China
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4
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Lin X, Min L, Li CC. Asymmetric Synthesis of the epi-Vinigrol Tricyclic Core Enabled by a Wolff Rearrangement Strategy and Formal Total Synthesis of (-)-Vinigrol. J Org Chem 2023; 88:14826-14830. [PMID: 37821441 DOI: 10.1021/acs.joc.3c01729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A new approach to construct the tricyclic framework of the diterpenoid vinigrol is described. The challenging 1,5-butanodecahydronaphthalene core was established efficiently and diastereoselectively through a combination of type II [5 + 2] cycloaddition and Wolff rearrangement. In addition, a formal total synthesis of (-)-vinigrol was achieved in 12 steps, in which Baran's intermediate was efficiently produced from a known compound by a two-step sequence involving a stereoselective α-hydroxylation and a diastereoselective α-ketol rearrangement.
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Affiliation(s)
- Xiaohong Lin
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Long Min
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518132, China
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5
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Zeng W, Zhang X, Zhang Y, Xiao S, Tang Y, Xie P, Loh TP. Organophotoredox-Catalyzed Intermolecular Formal Grob Fragmentation of Cyclic Alcohols with Activated Allylic Acetates. Org Lett 2023; 25:5869-5874. [PMID: 37515785 DOI: 10.1021/acs.orglett.3c02129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2023]
Abstract
We have developed an efficient method that employs organophotoredox-catalyzed relay Grob fragmentation to facilitate the smooth ring-opening allylation of cyclic alcohols in an environmentally friendly manner. This protocol directly incorporates a wide spectrum of cyclic alcohols and activated allylic acetates into the cross-coupling reaction, eliminating the need for metal catalysts. The process yields a variety of distally unsaturated ketones with good to excellent outcomes and stereoselectivity, while acetic acid is the sole byproduct.
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Affiliation(s)
- Wubing Zeng
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiaoyu Zhang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Yinlei Zhang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Shiji Xiao
- Jiangsu BioGuide Laboratory Co., Ltd, Wujin Economic Development Zone, Changzhou 213000, Jiangsu, China
| | - Yongming Tang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Peizhong Xie
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Teck-Peng Loh
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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6
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Xie D, Xu X, Long S, Tang XY, Wang L. Synthesis of (2-(Quinolin-2-yl)phenyl)carbamates by a One-Pot Friedel-Crafts Reaction/Oxidative Umpolung Aza-Grob Fragmentation Sequence. J Org Chem 2022; 87:7852-7863. [PMID: 35611951 DOI: 10.1021/acs.joc.2c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Utilizing the easily available isatin-based propargyl amines prepared from isatins, terminal alkynes, and anilines, (2-(quinolin-2-yl)phenyl)carbamates were prepared by a one-pot reaction in sequence, combining the gold-catalyzed Friedel-Crafts cyclization, oxidative umpolung aza-Grob fragmentation, and nucleophilic addition. In this process, gold-catalyzed cyclization of isatin-based propargyl amines gave 1'H-spiro[indoline-3,2'-quinolin]-2-ones, which were oxidized in situ by hypervalent iodine via the aza-Grob fragmentation to afford isocyano intermediates 2-(2-isocyanatophenyl)quinolines. Followed by the nucleophilic addition with alcohol solvents, (2-(quinolin-2-yl)phenyl)carbamates were synthesized. This procedure features easy operation, a wide substrate scope, and mild conditions.
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Affiliation(s)
- Dong Xie
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, 216 1st Road Optics Valley, East Lake New Technology Development District, Wuhan, Hubei 430205, P. R. China.,School of Chemistry and Chemical Engineering and Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, P. R. China
| | - Xin Xu
- School of Chemistry and Chemical Engineering and Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, P. R. China
| | - Sihui Long
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, 216 1st Road Optics Valley, East Lake New Technology Development District, Wuhan, Hubei 430205, P. R. China
| | - Xiang-Ying Tang
- School of Chemistry and Chemical Engineering and Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, P. R. China
| | - Long Wang
- School of Chemistry and Chemical Engineering and Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, P. R. China
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7
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Yang L, Huang S, Huang R, Hou A, Zhang S, Su H, Ding X, Lin B, Cheng M, Liu Y. Total Syntheses of Aspidospermidine, N-Methylaspidospermidine, N-Acetylaspidospermidine, and Aspidospermine via a Tandem Cyclization of Tryptamine-Ynamide. Org Lett 2021; 23:6471-6476. [PMID: 34339196 DOI: 10.1021/acs.orglett.1c02287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The total syntheses of aspidospermidine, N-methylaspidospermidine, N-acetylaspidospermidine, and aspidospermine were achieved from a common pentacyclic indoline intermediate. The common pentacyclic indoline intermediate was synthesized on a gram scale through a Stork-enamine alkylation of 1H-pyrrolo[2,3-d]carbazole derivatives, which were prepared through a Brønsted acid-catalyzed tandem cyclization of tryptamine-ynamide. The scalable synthesis of 1H-pyrrolo[2,3-d]carbazole afforded facile access and a practical approach to the Aspidosperma indole alkaloid family.
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Affiliation(s)
- Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Siwen Huang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Rongkang Huang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Anbin Hou
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Sen Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Hongwei Su
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Xiaohong Ding
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
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8
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Min L, Hu YJ, Fan JH, Zhang W, Li CC. Synthetic applications of type II intramolecular cycloadditions. Chem Soc Rev 2020; 49:7015-7043. [PMID: 32869796 DOI: 10.1039/d0cs00365d] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Type II intramolecular cycloadditions ([4+2], [4+3], [4+4] and [5+2]) have emerged recently as an efficient and powerful strategy for the construction of bridged ring systems. In general, type II cycloadditions provide access to a wide range of bridged bicyclo[m.n.1] ring systems with high regio- and diastereoselectivity in an easy and straightforward manner. In each section of this review, an overview of the corresponding type II cycloadditions is presented, which is followed by highlights of method development and synthetic applications in natural product synthesis. The goal of this review is to provide a survey of recent advances in the field covering literature up to 2020. The review will serve as a useful reference for organic chemists engaged in the total synthesis of natural products containing bridged bicyclo[m.n.1] ring systems and provide strong stimulus for invention and further advances in this exciting research field.
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Affiliation(s)
- Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.
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9
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Hu YJ, Li LX, Han JC, Min L, Li CC. Recent Advances in the Total Synthesis of Natural Products Containing Eight-Membered Carbocycles (2009-2019). Chem Rev 2020; 120:5910-5953. [PMID: 32343125 DOI: 10.1021/acs.chemrev.0c00045] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Natural products containing eight-membered carbocycles constitute a class of structurally intriguing and biologically important molecules such as the famous diterpenes taxol and vinigrol. Such natural products are being increasingly investigated because of their fascinating architectural features and potent medicinal properties. However, synthesis of natural products with cyclooctane moieties has proved to be highly challenging. This review highlights the recently completed total syntheses of natural products with eight-membered carbocycles with a focus on strategic considerations. A collection of 27 representative studies from the literature covering the decade from 2009 to 2019 is described in chronological order with relevant studies grouped together, including syntheses of the same natural product by different research groups using different strategies. Finally, a summary and outlook including a discussion of the major features of each strategy used in the syntheses are presented. This review illustrates the diversity and creativity in the elegant synthetic designs of eight-membered carbocycles. We hope this review will provide timely illumination and beneficial guidance for future synthetic efforts for organic chemists who are interested in this area.
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Affiliation(s)
- Ya-Jian Hu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Li-Xuan Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Jing-Chun Han
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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10
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11
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Bartolo ND, Read JA, Valentín EM, Woerpel KA. Reactions of Allylmagnesium Reagents with Carbonyl Compounds and Compounds with C═N Double Bonds: Their Diastereoselectivities Generally Cannot Be Analyzed Using the Felkin-Anh and Chelation-Control Models. Chem Rev 2020; 120:1513-1619. [PMID: 31904936 PMCID: PMC7018623 DOI: 10.1021/acs.chemrev.9b00414] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review describes the additions of allylmagnesium reagents to carbonyl compounds and to imines, focusing on the differences in reactivity between allylmagnesium halides and other Grignard reagents. In many cases, allylmagnesium reagents either react with low stereoselectivity when other Grignard reagents react with high selectivity, or allylmagnesium reagents react with the opposite stereoselectivity. This review collects hundreds of examples, discusses the origins of stereoselectivities or the lack of stereoselectivity, and evaluates why selectivity may not occur and when it will likely occur.
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Affiliation(s)
- Nicole D. Bartolo
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
| | - Jacquelyne A. Read
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, University of Utah, 315 South 1400
East, Salt Lake City, UT 84112, USA
| | - Elizabeth M. Valentín
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, Susquehanna University, 514
University Avenue, Selinsgrove, PA 17870, USA
| | - K. A. Woerpel
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
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12
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Affiliation(s)
- Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaohong Lin
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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13
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Indu S, Kaliappan KP. A new and informative [a,b,c,d] nomenclature for one-pot multistep transformations: a simple tool to measure synthetic efficiency. RSC Adv 2018; 8:21292-21305. [PMID: 35557999 PMCID: PMC9088519 DOI: 10.1039/c8ra03338b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/04/2018] [Indexed: 01/03/2023] Open
Abstract
Domino, cascade and tandem reactions constitute the most efficient and creative chemical transformations with a huge domain of synthetic utility and applications. A number of reactions may be achieved in a single pot, accompanied by the formation of new rings and new bonds, leading towards higher molecular complexity. A lack of one unified, yet informative descriptor often understates the synthetic ingenuity of certain highly creative transformations. In this review, we propose a new tetra-coordinated [a,b,c,d] nomenclature which takes into account and displays the basic parameters which generally indicate the level of efficiency of a chemical transformation. An almost exhaustive set of one-pot multistep reactions may be described by this system and this review is an attempt to display the one-pot multistep transformations reported from our group and to classify them based on our proposed descriptor.
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Affiliation(s)
- Satrajit Indu
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai-400076 India
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai-400076 India
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14
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15
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Liu XY, Qin Y. Enabling syntheses of diterpenoid alkaloids and related diterpenes by an oxidative dearomatization/Diels–Alder cycloaddition strategy. Nat Prod Rep 2017; 34:1044-1050. [PMID: 28799605 DOI: 10.1039/c7np00033b] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Recent accomplishments in the total syntheses of diterpenoid alkaloids and their biosynthetically associated diterpenes have highly relied on an oxidative dearomatization/Diels–Alder cycloaddition strategy, and are highlighted in this article.
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Affiliation(s)
- Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
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16
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Tian C, Lei X, Wang Y, Dong Z, Liu G, Tang Y. Total Syntheses of Periconiasins A-E. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602439] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Chong Tian
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
- Tsinghua-Peking Center for Life Sciences; School of Life Sciences; Tsinghua University; Beijing 100084 P.R. China
| | - Xiaoqiang Lei
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
| | - Yuanhao Wang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
| | - Zhen Dong
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
| | - Gang Liu
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
- Tsinghua-Peking Center for Life Sciences; School of Life Sciences; Tsinghua University; Beijing 100084 P.R. China
| | - Yefeng Tang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
- Collaborative Innovation Center for Biotherapy; State Key Laboratory of Biotherapy and Cancer Center; West China Hospital; West China Medical School; Sichuan University; Chengdu 610041 China
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17
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Tian C, Lei X, Wang Y, Dong Z, Liu G, Tang Y. Total Syntheses of Periconiasins A-E. Angew Chem Int Ed Engl 2016; 55:6992-6. [PMID: 27121397 DOI: 10.1002/anie.201602439] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Chong Tian
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
- Tsinghua-Peking Center for Life Sciences; School of Life Sciences; Tsinghua University; Beijing 100084 P.R. China
| | - Xiaoqiang Lei
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
| | - Yuanhao Wang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
| | - Zhen Dong
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
| | - Gang Liu
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
- Tsinghua-Peking Center for Life Sciences; School of Life Sciences; Tsinghua University; Beijing 100084 P.R. China
| | - Yefeng Tang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center; Tsinghua University; Beijing 100084 China
- Collaborative Innovation Center for Biotherapy; State Key Laboratory of Biotherapy and Cancer Center; West China Hospital; West China Medical School; Sichuan University; Chengdu 610041 China
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18
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Otte DAL, Woerpel KA. Evidence that Additions of Grignard Reagents to Aliphatic Aldehydes Do Not Involve Single-Electron-Transfer Processes. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01893] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Douglas A. L. Otte
- Department
of Chemistry, New York University, New York, New York 10003, United States
| | - K. A. Woerpel
- Department
of Chemistry, New York University, New York, New York 10003, United States
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19
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Draghici C, Njardarson JT. Synthetic Approaches and Total Syntheses of Vinigrol, a Unique Diterpenoid. Tetrahedron 2015; 71:3775-3793. [PMID: 26034329 PMCID: PMC4447714 DOI: 10.1016/j.tet.2015.04.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This review summarizes all published total and formal syntheses as well as synthetic approaches towards vinigrol. The content is divided into sections, which are focused on each research groups contributions and how far each approach was advanced towards vinigrol. Graphical summaries of all the published vinigrol structural perspectives, starting materials used for each routes and a discussion of preferred or privileged reactions employed is also presented.
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Affiliation(s)
- Cristian Draghici
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson, AZ 85716, USA
| | - Jon T. Njardarson
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson, AZ 85716, USA
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20
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Betkekar VV, Sayyad AA, Kaliappan KP. A Domino Enyne/IMDA Approach to the Core Structure of (−) Vinigrol. Org Lett 2014; 16:5540-3. [DOI: 10.1021/ol502497n] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vipul V. Betkekar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Ashik A. Sayyad
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Krishna P. Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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21
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Rapid construction of polycyclic ring systems from aromatics: stereoselective synthesis of the carbon framework of vinigrol. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Wang XL, Lu YY, Wang J, Wang X, Yao HQ, Lin GQ, Sun BF. A novel synthetic approach to the bicyclo[5.3.1]undecan-11-one framework of vinigrol. Org Biomol Chem 2014; 12:3562-6. [PMID: 24676561 DOI: 10.1039/c4ob00046c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first synthetic attempt commencing from an eight-membered ring to approach the [5.3.1] bicyclic core of vinigrol has demonstrated the feasibility of using the conformational bias of the cyclooctane-ring system to realize highly diastereoselective reactions. The synthetic potential of the newly disclosed access to in/out isomerism may stimulate broader interests.
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Affiliation(s)
- Xian-Lei Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China.
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23
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Yang Q, Draghici C, Njardarson JT, Li F, Smith BR, Das P. Evolution of an oxidative dearomatization enabled total synthesis of vinigrol. Org Biomol Chem 2014; 12:330-44. [PMID: 24258093 PMCID: PMC3901359 DOI: 10.1039/c3ob42191k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The evolution of the synthetic strategy resulting in a total synthesis of vinigrol is presented. Oxidative dearomatization/intramolecular Diels-Alder cycloaddition has served as the successful cornerstone for all of the approaches. Extensive radical cyclization efforts to form the tetracyclic core resulted in interesting and surprising reaction outcomes, none of which could be advanced to vinigrol. These cyclization obstacles were successfully overcome by using Heck instead of radical cyclizations. The total synthesis features a trifluoroethyl ether protecting group being used for the first time in organic synthesis. The logic of its selection and the group's importance beyond protecting the C8a hydroxyl group is presented along with a discussion of strategies for its removal. Because of the compact tetracyclic cage the route is built around many unusual reaction observations and solutions have emerged. For example, a first of its kind Grob fragmentation reaction featuring a trifluoroethyl leaving group has been uncovered, interesting interrupted selenium dioxide allylic oxidations have been observed as well as intriguing catalyst and counterion dependent directed hydrogenations.
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Affiliation(s)
- Qingliang Yang
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, NY 14853, USA
| | - Cristian Draghici
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, NY 14853, USA
| | - Jon T. Njardarson
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721, USA. Fax: (+1) 520-621-8407; Tel: (+1) 520 621-0754
| | | | - Brandon R. Smith
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721, USA. Fax: (+1) 520-621-8407; Tel: (+1) 520 621-0754
| | - Pradipta Das
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721, USA. Fax: (+1) 520-621-8407; Tel: (+1) 520 621-0754
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24
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Drahl MA, Manpadi M, Williams LJ. C-C fragmentation: origins and recent applications. Angew Chem Int Ed Engl 2013; 52:11222-51. [PMID: 24115282 DOI: 10.1002/anie.201209833] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Indexed: 11/07/2022]
Abstract
It has been 60 years since Eschenmoser and Frey disclosed the archetypal CC fragmentation reaction. New fragmentations and several variants of the original quickly followed. Many of these variations, which include the Beckmann, Grob, Wharton, Marshall, and Eschenmoser-Tanabe fragmentations, have been reviewed over the intervening years. A close examination of the origins of fragmentation has not been described. Recently, useful new methods have flourished, particularly fragmentations that give alkynes and allenes, and such reactions have been applied to a range of complex motifs and natural products. This Review traces the origins of fragmentation reactions and provides a summary of the methods, applications, and new insights of heterolytic CC fragmentation reactions advanced over the last 20 years.
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Affiliation(s)
- Michael A Drahl
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (USA)
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25
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Drahl MA, Manpadi M, Williams LJ. C-C-Fragmentierung: Herkunft und jüngste Anwendungen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209833] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Yang Q, Njardarson JT, Draghici C, Li F. Total synthesis of vinigrol. Angew Chem Int Ed Engl 2013; 52:8648-51. [PMID: 23818094 PMCID: PMC3805134 DOI: 10.1002/anie.201304624] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Qingliang Yang
- Department of Chemistry and Chemical Biology Cornell University, Baker Laboratory Ithaca, NY 14853-1301 (USA)
| | - Jon T. Njardarson
- Department of Chemistry and Biochemistry University of Arizona 1306 E. University Blvd., Tucson AZ 85721 (USA)
| | - Cristian Draghici
- Department of Chemistry and Chemical Biology Cornell University, Baker Laboratory Ithaca, NY 14853-1301 (USA)
| | - Fang Li
- Department of Chemistry and Biochemistry University of Arizona 1306 E. University Blvd., Tucson AZ 85721 (USA)
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27
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28
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Wilson MR, Taylor RE. Strained Alkenes in Natural Product Synthesis. Angew Chem Int Ed Engl 2013; 52:4078-87. [DOI: 10.1002/anie.201207712] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Indexed: 01/20/2023]
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Krenske EH, Perry EW, Jerome SV, Maimone TJ, Baran PS, Houk KN. Why a proximity-induced Diels-Alder reaction is so fast. Org Lett 2012; 14:3016-9. [PMID: 22630569 PMCID: PMC3426630 DOI: 10.1021/ol301083q] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Unlike normal Diels-Alder reactions of acyclic alkadienes with alkenes, the vinylbicyclo[2.2.2]octene employed in the Baran total synthesis of vinigrol undergoes a quantitative Diels-Alder reaction with a tethered alkene at room temperature. Density functional theory calculations reveal that this unprecedented reactivity originates from a combination of preorganization, diene strain, and tether stabilization.
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Affiliation(s)
- Elizabeth H. Krenske
- School of Chemistry, University of Melbourne, VIC 3010, Australia, and Australian Research Council Centre of Excellence for Free Radical Chemistry and Biotechnology
| | - Emma W. Perry
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
| | - Steven V. Jerome
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
| | - Thomas J. Maimone
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
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31
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Hopf H, Sherburn MS. Dendralene auf dem Vormarsch: kreuzkonjugierte Oligoene ermöglichen den schnellen Aufbau molekularer Komplexität. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201102987] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Hopf H, Sherburn MS. Dendralenes Branch Out: Cross-Conjugated Oligoenes Allow the Rapid Generation of Molecular Complexity. Angew Chem Int Ed Engl 2012; 51:2298-338. [DOI: 10.1002/anie.201102987] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 09/12/2011] [Indexed: 11/11/2022]
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34
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Poulin J, Grisé-Bard CM, Barriault L. A Formal Synthesis of Vinigrol. Angew Chem Int Ed Engl 2012; 51:2111-4. [DOI: 10.1002/anie.201108779] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Indexed: 11/06/2022]
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35
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Hierold J, Hsia T, Lupton DW. The Grob/Eschenmoser fragmentation of cycloalkanones bearing β-electron withdrawing groups: a general strategy to acyclic synthetic intermediates. Org Biomol Chem 2011; 9:783-92. [DOI: 10.1039/c0ob00632g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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36
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Silva, Jr. LF, Olofsson B. Hypervalent iodine reagents in the total synthesis of natural products. Nat Prod Rep 2011; 28:1722-54. [DOI: 10.1039/c1np00028d] [Citation(s) in RCA: 247] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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37
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38
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Affiliation(s)
- Tanja Gaich
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, 92037 La Jolla, California
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, 92037 La Jolla, California
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39
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Affiliation(s)
- Wenyi Zhao
- Shasun Pharma Solutions, Incorporated, 10 Knightsbridge Road, Pistcataway, New Jersey 08854, USA
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40
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41
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Lu JY, Hall D. Fragmentation Enables Complexity in the First Total Synthesis of Vinigrol. Angew Chem Int Ed Engl 2010; 49:2286-8. [DOI: 10.1002/anie.200906826] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Prantz K, Mulzer J. Synthetic Applications of the Carbonyl Generating Grob Fragmentation. Chem Rev 2010; 110:3741-66. [DOI: 10.1021/cr900386h] [Citation(s) in RCA: 145] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kathrin Prantz
- Institute of Organic Chemistry, University of Vienna, Währingerstrasse 38, A-1090 Vienna, Austria
| | - Johann Mulzer
- Institute of Organic Chemistry, University of Vienna, Währingerstrasse 38, A-1090 Vienna, Austria
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43
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Prantz K, Mulzer J. Synthesis of (Z)-Trisubstituted Olefins by Decarboxylative Grob-Type Fragmentations: Epothilone D, Discodermolide, and Peloruside A. Chemistry 2010; 16:485-506. [DOI: 10.1002/chem.200901567] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Our choice from the recent literature. Nat Chem 2010. [DOI: 10.1038/nchem.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Abstract
The longstanding challenge posed by the complex diterpene vinigrol has been answered for the first time. The notorious difficulty in synthesizing vinigrol stems from its unprecedented decahydro-1,5-butanonaphthalene ring system, eight contiguous stereocenters, and highly congested functionality. This Communication delineates a stereocontrolled 23-step route to vinigrol that is scalable (>5 g prepared of a late-stage intermediate), minimally reliant on protecting group chemistry, and facilitated by a number of unique and chemoselective transformations.
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Affiliation(s)
- Thomas J Maimone
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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46
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Croft L. Vinigrol vanquished. Nat Chem 2009. [DOI: 10.1038/nchem.474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Gentric L, Le Goff X, Ricard L, Hanna I. Toward the Total Synthesis of Vinigrol: Synthesis of epi-C-8-Dihydrovinigrol. J Org Chem 2009; 74:9337-44. [DOI: 10.1021/jo901971f] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Louis Ricard
- Laboratoire Hétéroatomes et Coordination CNRS UMR 7653
| | - Issam Hanna
- Laboratoire de Synthèse Organique CNRS UMR 7652
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48
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Morton JGM, Draghici C, Kwon LD, Njardarson JT. Rapid assembly of vinigrol's unique carbocyclic skeleton. Org Lett 2009; 11:4492-5. [PMID: 19728692 PMCID: PMC2759413 DOI: 10.1021/ol901519k] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Detailed in this account are our efforts toward the total synthesis of vinigrol. A highly expedient and convergent synthetic approach made possible by the use of a strategic oxidative dearomatization reaction coupled with a series of ensuing substrate controlled transformations is discussed.
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Affiliation(s)
- Jason G. M. Morton
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301
| | - Cristian Draghici
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301
| | - Laura D. Kwon
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301
| | - Jon T. Njardarson
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301
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49
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Juhl M, Tanner D. Recent applications of intramolecular Diels-Alder reactions to natural product synthesis. Chem Soc Rev 2009; 38:2983-92. [PMID: 19847335 DOI: 10.1039/b816703f] [Citation(s) in RCA: 241] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This tutorial review presents some recent examples of intramolecular Diels-Alder (IMDA) reactions as key complexity-generating steps in the total synthesis of structurally intricate natural products. The opportunities afforded by transannular (TADA) versions of the IMDA reaction in complex molecule assembly are also highlighted. The review is aimed at a wide audience, ranging from advanced undergraduates to seasoned practitioners of total synthesis; since this is an educational overview, only selected highlights from the period 2000-2009 are presented, along with chosen references to other, more comprehensive, reviews.
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Affiliation(s)
- Martin Juhl
- H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark.
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50
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Prantz K, Mulzer J. Decarboxylative Grob-Type Fragmentations in the Synthesis of TrisubstitutedZ Olefins: Application to Peloruside A, Discodermolide, and Epothilone D. Angew Chem Int Ed Engl 2009; 48:5030-3. [DOI: 10.1002/anie.200901740] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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