1
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Dethe DH, Sharma N, Juyal S, Singh P, Siddiqui SA. Enantioselective total synthesis of atisane diterpenoids: (+)-sapinsigin H, (+)-agallochaol C, and (+)-16α, 17-dihydroxy-atisan-3-one. Chem Commun (Camb) 2024; 60:7866-7869. [PMID: 38847577 DOI: 10.1039/d4cc01982b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2024]
Abstract
Enantioselective total synthesis of (+)-sapinsigin H, (+)-agallochaol C, and (+)-16α, 17-dihydroxy-atisan-3-one has been accomplished starting from enantiopure Wieland-Miescher ketone. Key features of the syntheses include a benzannulation step to construct the tricyclic core, an oxidative dearomatization step to generate the diene, and a Diels-Alder reaction with ethylene gas to establish the bicyclo[2.2.2]octane framework. Efficient late-stage functionalisation of the A-ring by aerobic oxidation and Baeyer-Villiger oxidation completed the atisane target molecules.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Nitin Sharma
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Sakshi Juyal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Prabhakar Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Salman A Siddiqui
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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2
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Yu F, Xu L. A concise and stereoselective synthesis of the BCDF tetracyclic ring system of C 19-diterpenoid alkaloids. RSC Adv 2024; 14:21102-21106. [PMID: 38966809 PMCID: PMC11223105 DOI: 10.1039/d4ra02821j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 07/06/2024] Open
Abstract
A new synthetic route for the BCDF tetracyclic ring system of C19-diterpenoid alkaloids (C19-DTAs) has been developed. The key step is a Pd-catalyzed transannular alkenylation that installs a functionalized bridged F ring. The overall strategy is concise and stereoselective, and it provides a valuable new tool for the synthesis of C19-DTAs. The synthesis begins with a bridged [3.2.1] ring system, which is converted to a key intermediate through a series of highly regio- and stereoselective processes. The introduction of an allylic side chain with high precision is accomplished, culminating in a Pd-catalyzed transannular alkenylation that installs a functionalized bridged F ring to yield the BCDF tetracyclic analog of C19-DTAs.
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Affiliation(s)
- Fangzhou Yu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University Chengdu 610041 P. R. China
| | - Liang Xu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University Chengdu 610041 P. R. China
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3
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Sun Y, Feng J, Qin S, Fu S, Liu B. Asymmetric Construction of the Core of C 6, C 7-Epoxy Daphnane Diterpenoid Orthoesters. Org Lett 2023; 25:8072-8076. [PMID: 37916924 DOI: 10.1021/acs.orglett.3c03136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Asymmetric construction of the core of C6, C7-epoxy daphnane diterpenoid orthoesters is developed through a convergent synthetic strategy. The salient features include a diastereoselective nucleophilic assembly of two bulky cyclic fragments, an oxidative cleavage/transesterification/aldol cascade to fashion the seven-membered ring, and a base-mediated transesterification/retro-aldol/aldol/epoxidation cascade to install the epoxy moiety with proper stereochemistry.
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Affiliation(s)
- Ying Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jing Feng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Song Qin
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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4
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Flesch KN, Cusumano AQ, Chen PJ, Strong CS, Sardini SR, Du YE, Bartberger MD, Goddard WA, Stoltz BM. Divergent Catalysis: Catalytic Asymmetric [4+2] Cycloaddition of Palladium Enolates. J Am Chem Soc 2023; 145:11301-11310. [PMID: 37186945 PMCID: PMC10388310 DOI: 10.1021/jacs.3c02104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
An asymmetric decarboxylative [4+2] cycloaddition from a catalytically generated chiral Pd enolate was developed, forging four contiguous stereocenters in a single transformation. This was achieved through a strategy termed divergent catalysis, wherein departure from a known catalytic cycle enables novel reactivity of a targeted intermediate prior to re-entry into the original cycle. Mechanistic studies including quantum mechanics calculations, Eyring analysis, and KIE studies offer insight into the reaction mechanism.
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Affiliation(s)
- Kaylin N Flesch
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Alexander Q Cusumano
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Peng-Jui Chen
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Christian Santiago Strong
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Stephen R Sardini
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Yun E Du
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | | | - William A Goddard
- Materials and Process Simulation Center, Beckman Institute, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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5
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Chiminelli M, Serafino A, Ruggeri D, Marchiò L, Bigi F, Maggi R, Malacria M, Maestri G. Visible-Light Promoted Intramolecular para-Cycloadditions on Simple Aromatics. Angew Chem Int Ed Engl 2023; 62:e202216817. [PMID: 36705630 DOI: 10.1002/anie.202216817] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 01/28/2023]
Abstract
Dearomative cycloadditions are a powerful tool to access a large chemical space exploiting simple and ubiquitous building blocks. The energetic burden due to the loss of aromaticity has however greatly limited their synthetic potential. We devised a general intramolecular method that overcomes these limitations thanks to the photosensitization of allenamides. The visible-light-promoted process gives complex [2.2.2]-(hetero)-bicyclooctadienes at room temperature, likely through the stabilization of transient (bi)radicals by naphthalene. The reaction tolerates several valuable functionalities, offering a convenient handle for a myriad of applications, including original isoindoles and metal complexes.
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Affiliation(s)
- Maurizio Chiminelli
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy
| | - Andrea Serafino
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy
| | - Davide Ruggeri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy
| | - Luciano Marchiò
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy
| | - Franca Bigi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy.,IMEM-CNR, Parco Area delle Scienze 37/A, 43124, Parma, Italy
| | - Raimondo Maggi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy
| | - Max Malacria
- IPCM (UMR CNRS 8232), Sorbonne Université, 4 place Jussieu, 75252, Paris Cedex 05, France
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43 124, Parma, Italy
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6
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Plangger I, Wurst K, Magauer T. Short, Divergent, and Enantioselective Total Synthesis of Bioactive ent-Pimaranes. Org Lett 2022; 24:7151-7156. [PMID: 36170466 PMCID: PMC7613685 DOI: 10.1021/acs.orglett.2c02843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present the first total synthesis of eight ent-pimaranes via a short and enantioselective route (11-16 steps). Key features of the divergent synthesis are a Sharpless asymmetric dihydroxylation, a Brønsted acid catalyzed cationic bicyclization, and a mild Rh-catalyzed arene hydrogenation for rapid access to a late synthetic branching point. From there on, selective functional group manipulations enable the synthesis of ent-pimaranes bearing different modifications in the A- and C-rings.
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Affiliation(s)
- Immanuel Plangger
- Institute of Organic Chemistry and Center for Molecular Biosciences, Leopold-Franzens-University Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical Chemistry, Leopold-Franzens-University Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Thomas Magauer
- Institute of Organic Chemistry and Center for Molecular Biosciences, Leopold-Franzens-University Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
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7
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Wu X, Gannett CN, Liu J, Zeng R, Novaes LFT, Wang H, Abruña HD, Lin S. Intercepting Hydrogen Evolution with Hydrogen-Atom Transfer: Electron-Initiated Hydrofunctionalization of Alkenes. J Am Chem Soc 2022; 144:17783-17791. [PMID: 36137298 DOI: 10.1021/jacs.2c08278] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hydrogen-atom transfer mediated by earth-abundant transition-metal hydrides (M-Hs) has emerged as a powerful tool in organic synthesis. Current methods to generate M-Hs most frequently rely on oxidatively initiated hydride transfer. Herein, we report a reductive approach to generate Co-H, which allows for canonical hydrogen evolution reactions to be intercepted by hydrogen-atom transfer to an alkene. Electroanalytical and spectroscopic studies provided mechanistic insights into the formation and reactivity of Co-H, which enabled the development of two new alkene hydrofunctionalization reactions.
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Affiliation(s)
- Xiangyu Wu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Cara N Gannett
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Jinjian Liu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Rui Zeng
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Luiz F T Novaes
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Hongsen Wang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Héctor D Abruña
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Song Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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8
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Zhan ZJ, Li S, Chu W, Yin S. Euphorbia diterpenoids: isolation, structure, bioactivity, biosynthesis, and synthesis (2013-2021). Nat Prod Rep 2022; 39:2132-2174. [PMID: 36111621 DOI: 10.1039/d2np00047d] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Covering: 2013 to 2021As the characteristic metabolites of Euphorbia plants, Euphorbia diterpenoids have always been a hot topic in related science communities due to their intriguing structures and broad bioactivities. In this review, we intent to provide an in-depth and extensive coverage of Euphorbia diterpenoids reported from 2013 to the end of 2021, including 997 new Euphorbia diterpenoids and 78 known ones with latest progress. Multiple aspects will be summarized, including their occurrences, chemical structures, bioactivities, and syntheses, in which the structure-activity relationship and biosynthesis of this class will be discussed for the first time.
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Affiliation(s)
- Zha-Jun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Shen Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China.
| | - Wang Chu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Sheng Yin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China.
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9
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Ochmann L, Fuhrmann M, Gössl FJ, Makaveev A, Schreiner PR. All That metas─Synthesis of Dispersion Energy Donor-Substituted Benzenes. Org Lett 2022; 24:6968-6972. [DOI: 10.1021/acs.orglett.2c02780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lukas Ochmann
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Michael Fuhrmann
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Felix J. Gössl
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Alexander Makaveev
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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10
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Xiao S, Ai L, Liu Q, Yang B, Huang J, Xue W, Chen Y. Total Synthesis of Natural Terpenoids Enabled by Cobalt Catalysis. Front Chem 2022; 10:941184. [PMID: 35783212 PMCID: PMC9241582 DOI: 10.3389/fchem.2022.941184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 12/01/2022] Open
Abstract
Transition metal catalysis plays an essential role in the total synthesis of natural products. Cobalt-mediated asymmetric catalysis has successfully been used as a primary or a secondary step in the total synthesis of natural products, especially terpenoids. Terpenoids represent one of the most prominent families among various categories of natural products, attracting immense attention due to their promising physiological activities. This review summarizes the recent advances toward the total synthesis of terpenoids by cobalt-mediated asymmetric catalysis, which may shed some light on their future synthetic efforts toward natural pesticides such as celanguline, azadirachtin, etc.
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Affiliation(s)
| | | | | | | | | | - Wei Xue
- *Correspondence: Yang Chen, ; Wei Xue,
| | - Yang Chen
- *Correspondence: Yang Chen, ; Wei Xue,
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11
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Ma W, Zhu L, Zhang M, Lee C. Asymmetric Synthesis of AB Rings in ent-Kaurene Carbon Framework. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Wei JC, Zhang XY, Gao YN, Wang DD, He XL, Gao XX, Hu GS, Wang AH, Jia JM. Euphorfinoids E-L: Diterpenoids from the roots of Euphorbia fischeriana with acetylcholinesterase inhibitory activity. PHYTOCHEMISTRY 2021; 190:112867. [PMID: 34304117 DOI: 10.1016/j.phytochem.2021.112867] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Eight undescribed diterpenoids, euphorfinoids E-L, together with twelve known analogues, were isolated from the roots of wild Euphorbia fischeriana. Their structures and absolute configurations were elucidated by a combination of NMR, MS, ECD, and X-ray diffraction analyses. The plausible biosynthetic pathway of 1 was also proposed. The isolated compounds displayed moderate inhibitory activity against acetylcholinesterase (AChE) with 50% inhibiting concentration (IC50) values of 6.23-192.38 μM.
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Affiliation(s)
- Jiang-Chun Wei
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xiao-Yu Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Yu-Ning Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Dong-Dong Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xue-Lai He
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xiao-Xu Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Gao-Sheng Hu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - An-Hua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
| | - Jing-Ming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
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13
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Synthesis of Illisimonin a Skeleton by Intramolecular Diels–Alder Reaction of Ortho-Benzoquinones and Biomimetic Skeletal Rearrangement of Allo-Cedranes. ORGANICS 2021. [DOI: 10.3390/org2030016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Illisimonin A is a new sesquiterpene isolated from Illicium simonsii, and it possesses a novel 5/5/5/5/5 pentacyclic skeleton. The tricyclic skeleton of illisimonin A, tricyclo[5.2.1.01,5]decane, is presumed to be biosynthesized from allo-cedranes via a skeletal rearrangement. Herein, we report the concise synthesis of highly oxidized allo-cedranes by an intramolecular Diels–Alder reaction using ortho-benzoquinones and demonstrate the biomimetic transformation of allo-cedranes by a retro-Claisen/aldol pathway.
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14
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Wang B, Liu Z, Tong Z, Gao B, Ding H. Asymmetric Total Syntheses of 8,9‐Seco‐
ent
‐kaurane Diterpenoids Enabled by an Electrochemical ODI‐[5+2] Cascade. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104410] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Bingnan Wang
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Zhaobo Liu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Zhenzhong Tong
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Beiling Gao
- 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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15
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Wang B, Liu Z, Tong Z, Gao B, Ding H. Asymmetric Total Syntheses of 8,9-Seco-ent-kaurane Diterpenoids Enabled by an Electrochemical ODI-[5+2] Cascade. Angew Chem Int Ed Engl 2021; 60:14892-14896. [PMID: 33900670 DOI: 10.1002/anie.202104410] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 12/11/2022]
Abstract
An electrochemical ODI-[5+2] cascade reaction was developed which enables the rapid assembly of diversely functionalized bicyclo[3.2.1]octadienones from sensitive ethynylphenols. By combining a directed retro-aldol/aldol process, a [2,3]-sigmatropic rearrangement, and an Al(O-iPr)3 -promoted reductive 1,3-transposition, the asymmetric total syntheses of five 8,9-seco-ent-kauranoids-(-)-shikoccin, (-)-O-methylshikoccin, (-)-epoxyshikoccin, (+)-O-methylepoxyshikoccin, and (+)-rabdo-hakusin-have been achieved in a concise and efficient manner.
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Affiliation(s)
- Bingnan Wang
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Zhaobo Liu
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Zhenzhong Tong
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Beiling Gao
- 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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16
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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17
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Abstract
The first asymmetric total synthesis of rumphellclovane E, a clovane-type sesquiterpenoid, has been accomplished in eight steps from commercially available (R)-carvone. Key elements of the synthesis include Rh-catalyzed cyclopropanation, iron-catalyzed intramolecular reductive aldol reaction, and SmI2-mediated chemo- and diastereoselective reduction of the cyclopentanone.
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Affiliation(s)
- Guanggen Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Zhijiang Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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18
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Xie Y, Huang W, Qin S, Fu S, Liu B. Catalytic radical cascade cyclization of alkene-tethered enones to fused bicyclic cyclopropanols. Org Chem Front 2021. [DOI: 10.1039/d1qo01312b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fused bicyclic cyclopropanols were achieved via an unprecedented HAT-triggered radical cascade reaction of alkene-tethered enones in the presence of an iron catalyst.
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Affiliation(s)
- Ying Xie
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - Wei Huang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Song Qin
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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19
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Xu Z, Zong Y, Qiao Y, Zhang J, Liu X, Zhu M, Xu Y, Zheng H, Fang L, Wang X, Lou H. Divergent Total Synthesis of Euphoranginol C, Euphoranginone D,
ent
‐Trachyloban‐3β‐ol,
ent
‐Trachyloban‐3‐one, Excoecarin E, and
ent
‐16α‐Hydroxy‐atisane‐3‐one. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009128] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ze‐Jun Xu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Yan Zong
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Ya‐Nan Qiao
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Jiao‐Zhen Zhang
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Xuyuan Liu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Ming‐Zhu Zhu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Yuliang Xu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Hongbo Zheng
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Liyuan Fang
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Xiao‐ning Wang
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Hong‐Xiang Lou
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
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20
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Xu Z, Zong Y, Qiao Y, Zhang J, Liu X, Zhu M, Xu Y, Zheng H, Fang L, Wang X, Lou H. Divergent Total Synthesis of Euphoranginol C, Euphoranginone D,
ent
‐Trachyloban‐3β‐ol,
ent
‐Trachyloban‐3‐one, Excoecarin E, and
ent
‐16α‐Hydroxy‐atisane‐3‐one. Angew Chem Int Ed Engl 2020; 59:19919-19923. [PMID: 32696611 DOI: 10.1002/anie.202009128] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Ze‐Jun Xu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Yan Zong
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Ya‐Nan Qiao
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Jiao‐Zhen Zhang
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Xuyuan Liu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Ming‐Zhu Zhu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Yuliang Xu
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Hongbo Zheng
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Liyuan Fang
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Xiao‐ning Wang
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Hong‐Xiang Lou
- Department of Natural Products Chemistry Key Lab of Chemical Biology (MOE) School of Pharmaceutical Sciences Shandong University No. 44 West Wenhua Road Jinan 250012 P. R. China
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21
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Meng LH, Li XM, Zhang FZ, Wang YN, Wang BG. Talascortenes A-G, Highly Oxygenated Diterpenoid Acids from the Sea-Anemone-Derived Endozoic Fungus Talaromyces scorteus AS-242. JOURNAL OF NATURAL PRODUCTS 2020; 83:2528-2536. [PMID: 32813522 DOI: 10.1021/acs.jnatprod.0c00628] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Eight new diterpenoid acids, namely, talascortenes A-G (1-7) and 5α,9β-dihydroxyisocupressic acid (8), with four different carbon skeletons, were isolated and identified from the endozoic fungal strain Talaromyces scorteus AS-242 that was obtained from the inner fresh tissue of a deep sea Cerianthus sp. sea anemone. The structures of the new compounds were elucidated by detailed interpretation of NMR and mass spectrometric data. X-ray crystallographic analysis of compounds 1-5 and 7 confirmed their structures and absolute configurations. Compounds 1-8 showed inhibitory activities against several human, aquatic, and plant pathogens with MIC values ranging from 1 to 32 μg/mL.
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Affiliation(s)
- Ling-Hong Meng
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
| | - Xiao-Ming Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
| | - Fan-Zhong Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
- University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, People's Republic of China
| | - Ya-Nan Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
- University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, People's Republic of China
| | - Bin-Gui Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
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22
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Abstract
As a natural diterpenoid, crotophorbolone possesses a challenging trans,trans-5/7/6 framework decorated with six contiguous stereogenic centers and is structurally and biogenetically related to tigliane-type diterpenoids with intriguing bioactivities such as phorbol and prostratin. Based on the convergent strategy, we completed an eighteen-step total synthesis of crotophorbolone starting from (−)-carvone and (+)-dimethyl-2,3-O-isopropylidene-l-tartrate. The key elements of the synthesis involve expedient installation of the six-membered ring and the five-membered ring with multiple functional groups at an early stage, cyclization of the seven-membered ring through alkenylation of the ketone between the five-membered ring and the six-membered ring, functional group-sensitive ring-closing metathesis and final selective introduction of hydroxyls at C20 and C4. Convergent total synthesis of crotophorbolone was accomplished in 18 longest linear steps. Observation of unexpected thermodynamic stability of a cis,trans-5/7/6 tricycle would benefit synthetic design of tigliane- and daphnane-related diterpenoids.![]()
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Affiliation(s)
- Tianzi Yu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Ying Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Canhui Tu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Ting Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
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23
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Bahou KA, Braddock DC, Meyer AG, Savage GP, Shi Z, He T. A Relay Strategy Actuates Pre-Existing Trisubstituted Olefins in Monoterpenoids for Cross-Metathesis with Trisubstituted Alkenes. J Org Chem 2020; 85:4906-4917. [PMID: 32191466 PMCID: PMC7145354 DOI: 10.1021/acs.joc.0c00067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A retrosynthetic disconnection-reconnection analysis of epoxypolyenes-substrates that can undergo cyclization to podocarpane-type tricycles-reveals relay-actuated Δ6,7-functionalized monoterpenoid alcohols for ruthenium benzylidene catalyzed olefin cross-metathesis with homoprenyl benzenes. Successful implementation of this approach provided several epoxypolyenes as expected (E/Z, ca. 2-3:1). The method is further generalized for the cross-metathesis of pre-existing trisubstituted olefins in other relay-actuated Δ6,7-functionalized monoterpenoid alcohols with various other trisubstituted alkenes to form new trisubstituted olefins. Epoxypolyene cyclization of an enantiomerically pure, but geometrically impure, epoxypolyene substrate provides an enantiomerically pure, trans-fused, podocarpane-type tricycle (from the E-geometrical isomer).
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Affiliation(s)
- Karim A Bahou
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K
| | - D Christopher Braddock
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K
| | - Adam G Meyer
- CSIRO Manufacturing, Jerry Price Laboratory, Research Way, Clayton 3168, Victoria, Australia
| | - G Paul Savage
- CSIRO Manufacturing, Jerry Price Laboratory, Research Way, Clayton 3168, Victoria, Australia
| | - Zhensheng Shi
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K
| | - Tianyou He
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K
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24
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Que Y, Shao H, He H, Gao S. Total Synthesis of Farnesin through an Excited‐State Nazarov Reaction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001350] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yonglei Que
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Hao Shao
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
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25
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Que Y, Shao H, He H, Gao S. Total Synthesis of Farnesin through an Excited‐State Nazarov Reaction. Angew Chem Int Ed Engl 2020; 59:7444-7449. [DOI: 10.1002/anie.202001350] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Yonglei Que
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Hao Shao
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
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26
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Huang J, Shia K. Development of a Cross‐Conjugated Vinylogous [4+2] Anionic Annulation and Application to the Total Synthesis of Natural Antibiotic (±)‐ABX. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jing‐Kai Huang
- Institute of Biotechnology and Pharmaceutical ResearchNational Health Research Institutes 35 Keyan Road Zhunan Miaoli County 35053 Taiwan, R.O.C
| | - Kak‐Shan Shia
- Institute of Biotechnology and Pharmaceutical ResearchNational Health Research Institutes 35 Keyan Road Zhunan Miaoli County 35053 Taiwan, R.O.C
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27
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Huang JK, Shia KS. Development of a Cross-Conjugated Vinylogous [4+2] Anionic Annulation and Application to the Total Synthesis of Natural Antibiotic (±)-ABX. Angew Chem Int Ed Engl 2020; 59:6540-6545. [PMID: 31944523 PMCID: PMC7187479 DOI: 10.1002/anie.201914657] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/02/2020] [Indexed: 12/14/2022]
Abstract
The cross‐conjugated vinylogous [4+2] anionic annulation has been newly developed, the cascade process of which has a high preference for regiochemical control and chemoselectivity, giving rise to exclusively Michael‐type adducts in moderate to high yields (up to 94 %, 35 examples). By making use of this approach as a key operation, the first total synthesis of natural antibiotic ABX, in racemic form, has been successfully achieved in a concise 7‐step sequence with an overall yield of about 20 %.
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Affiliation(s)
- Jing-Kai Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan, R.O.C
| | - Kak-Shan Shia
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan, R.O.C
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28
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Hu J, Jia Z, Xu K, Ding H. Total Syntheses of (+)-Stemarin and the Proposed Structures of Stemara-13(14)-en-18-ol and Stemara-13(14)-en-17-acetoxy-18-ol. Org Lett 2020; 22:1426-1430. [DOI: 10.1021/acs.orglett.0c00029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jialei Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Ziqi Jia
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Kaixiang Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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29
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Wang J, Hong B, Hu D, Kadonaga Y, Tang R, Lei X. Protecting-Group-Free Syntheses of ent-Kaurane Diterpenoids: [3+2+1] Cycloaddition/Cycloalkenylation Approach. J Am Chem Soc 2020; 142:2238-2243. [DOI: 10.1021/jacs.9b13722] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Department of Chemical Biology, Synthetic and Functional Biomolecules Center, Peking University, Beijing 100871, China
| | - Benke Hong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Department of Chemical Biology, Synthetic and Functional Biomolecules Center, Peking University, Beijing 100871, China
| | - Dachao Hu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Department of Chemical Biology, Synthetic and Functional Biomolecules Center, Peking University, Beijing 100871, China
| | - Yuichiro Kadonaga
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Department of Chemical Biology, Synthetic and Functional Biomolecules Center, Peking University, Beijing 100871, China
| | - Ruyao Tang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Department of Chemical Biology, Synthetic and Functional Biomolecules Center, Peking University, Beijing 100871, China
| | - Xiaoguang Lei
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Department of Chemical Biology, Synthetic and Functional Biomolecules Center, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
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30
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31
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Kyne SH, Lefèvre G, Ollivier C, Petit M, Ramis Cladera VA, Fensterbank L. Iron and cobalt catalysis: new perspectives in synthetic radical chemistry. Chem Soc Rev 2020; 49:8501-8542. [DOI: 10.1039/d0cs00969e] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Iron and cobalt complexes are at the origin of high valuable synthetic pathways involving radical intemediates.
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Affiliation(s)
- Sara H. Kyne
- School of Chemistry
- Faculty of Science
- Monash University
- Clayton
- Australia
| | - Guillaume Lefèvre
- i-CLeHS CSB2D
- Chimie ParisTech
- 11 rue Pierre et Marie Curie
- FR 75005 Paris
- France
| | - Cyril Ollivier
- Sorbonne Université
- CNRS
- UMR8232
- Institut Parisien de Chimie Moléculaire
- F-75252 Paris Cedex 05
| | - Marc Petit
- Sorbonne Université
- CNRS
- UMR8232
- Institut Parisien de Chimie Moléculaire
- F-75252 Paris Cedex 05
| | | | - Louis Fensterbank
- Sorbonne Université
- CNRS
- UMR8232
- Institut Parisien de Chimie Moléculaire
- F-75252 Paris Cedex 05
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32
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Radhika S, Saranya S, Harry NA, Anilkumar G. Recent Advances and Prospects in the Chemistry of
o
‐Benzoquinones. ChemistrySelect 2019. [DOI: 10.1002/slct.201902637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sankaran Radhika
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Salim Saranya
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Nissy Ann Harry
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Gopinathan Anilkumar
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
- Advanced Molecular Materials Research Centre (AMMRC)Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
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33
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Yu K, Yang Z, Liu C, Wu S, Hong X, Zhao X, Ding H. Total Syntheses of Rhodomolleins XX and XXII: A Reductive Epoxide‐Opening/Beckwith–Dowd Approach. Angew Chem Int Ed Engl 2019; 58:8556-8560. [DOI: 10.1002/anie.201903349] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Kuan Yu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Zhen‐Ning Yang
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Chun‐Hui Liu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xiao‐Li Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesDepartment of ChemistryEast China Normal University Shanghai 200062 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
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34
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Chen S, Chen T, Liu G, Wang X, Zhu G, Liu Y, Fu S, Liu B. Total synthesis of (±)-epi-stemodan-13α,17-diol. Org Biomol Chem 2019; 17:4711-4714. [PMID: 31025696 DOI: 10.1039/c9ob00661c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Stemodan-13α,17-diol is a natural stemodane-type diterpenoid isolated from Stemodia chilensis. Herein we report the total synthesis of its epimer, stemodan-13β,17-diol, by applying titanium-mediated polyene cyclization and iron-catalyzed [5 + 2] cycloaddition as the key transformations to expeditiously install the molecular scaffold.
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Affiliation(s)
- Song Chen
- Key Laboratory of Green Chemistry &Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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35
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Yu K, Yang Z, Liu C, Wu S, Hong X, Zhao X, Ding H. Total Syntheses of Rhodomolleins XX and XXII: A Reductive Epoxide‐Opening/Beckwith–Dowd Approach. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kuan Yu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Zhen‐Ning Yang
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Chun‐Hui Liu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xiao‐Li Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesDepartment of ChemistryEast China Normal University Shanghai 200062 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
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36
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Fukaya K, Saito A, Nakajima N, Urabe D. A Computational Study on the Stereo- and Regioselective Formation of the C4α-C6' Bond of Tethered Catechin Moieties by an Exhaustive Search of the Transition States. J Org Chem 2019; 84:2840-2849. [PMID: 30701979 DOI: 10.1021/acs.joc.8b03263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We previously reported the total synthesis of procyanidin B6 by using the stereo- and regioselective C-C bond formation of tethered catechin moieties as the key step. The reaction afforded the product bearing a new C4α-C6' bond linkage instead of the inherently preferable C4α-C8' bond. However, the origin of this selectivity remained unclear due to the complex structure of the substrate. Here we report the results of computational exploration of this C-C bond formation to gain mechanistic insights into the selectivity. The computational study of highly flexible compounds was realized by an exhaustive search of transition states. A large library of candidate transition states was generated by a conformational search of constrained models using molecular mechanics simulations and semiempirical molecular orbital calculations. Subsequent DFT-based transition state calculations provided 367 transition states for C4-C6' and C4-C8' bond formations. Comparison of the geometries and energies showed that the C4α-C6' linkage is preferentially formed via two competing transition states, leading to a C6'-diastereomeric mixture. Interactive atomic distances and visualization of the nonbonding interactions suggest the importance of nonclassical hydrogen bonding and CH-π, π-π, and lone pair-π interactions in stabilizing the two transition states. The present study supports preferential C4α-C6' bond formation of the tethered catechins.
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Affiliation(s)
- Keisuke Fukaya
- Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , 5180 Kurokawa , Imizu , Toyama 939-0398 , Japan
| | - Akiko Saito
- Graduate School of Engineering , Osaka Electro-Communication University , 18-8 Hatsu-cho , Neyagawa , Osaka 572-8530 , Japan
| | - Noriyuki Nakajima
- Biotechnology Research Center and Department of Pharmaceutical Engineering , Toyama Prefectural University , 5180 Kurokawa , Imizu , Toyama 939-0398 , Japan
| | - Daisuke Urabe
- Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , 5180 Kurokawa , Imizu , Toyama 939-0398 , Japan
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37
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Xie S, Chen G, Yan H, Hou J, He Y, Zhao T, Xu J. 13-Step Total Synthesis of Atropurpuran. J Am Chem Soc 2019; 141:3435-3439. [DOI: 10.1021/jacs.9b00391] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shengling Xie
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Gui Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Hao Yan
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jieping Hou
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yongping He
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Tongyun Zhao
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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38
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Bazian A, Beyramabadi SA, Davoodnia A, Bozorgmehr MR, Pordel M. A Theoretical Investigation on the Regioselectivity of the Diels–Alder Cycloaddition of 9-(Methoxymethyl) Anthracene And Citraconic Anhydride. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476618080085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Zhang XM, Tu YQ, Zhang FM, Chen ZH, Wang SH. Recent applications of the 1,2-carbon atom migration strategy in complex natural product total synthesis. Chem Soc Rev 2018; 46:2272-2305. [PMID: 28349159 DOI: 10.1039/c6cs00935b] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
1,2-Carbon atom rearrangement has been broadly applied as a guiding strategy in complex molecule assembly. As it entails the carbon-carbon or carbon-heteroatom bond migration between two vicinal atoms, this type of reaction is capable of generating structural complexity through a molecular skeletal reorganization. This review will focus on recent employment of this strategy in the total synthesis of natural products, highlighting the exceptional utility of such synthetic methodologies in the construction of intricate carbocycles, heterocycles or structurally complex motifs from synthetically more accessible precursors.
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Affiliation(s)
- Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
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40
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Cao W, Deng H, Sun Y, Liu B, Qin S. Asymmetric Synthesis of Hispidanin A and Related Diterpenoids. Chemistry 2018; 24:9120-9129. [DOI: 10.1002/chem.201801156] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Cao
- Key Laboratory of Green Chemistry & Technology, of the Ministry of Education Institution, College of Chemistry; Sichuan University; Chengdu Sichuan 610064 China
| | - Heping Deng
- Key Laboratory of Green Chemistry & Technology, of the Ministry of Education Institution, College of Chemistry; Sichuan University; Chengdu Sichuan 610064 China
| | - Ying Sun
- Key Laboratory of Green Chemistry & Technology, of the Ministry of Education Institution, College of Chemistry; Sichuan University; Chengdu Sichuan 610064 China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology, of the Ministry of Education Institution, College of Chemistry; Sichuan University; Chengdu Sichuan 610064 China
| | - Song Qin
- Key Laboratory of Green Chemistry & Technology, of the Ministry of Education Institution, College of Chemistry; Sichuan University; Chengdu Sichuan 610064 China
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41
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Zhou S, Guo R, Yang P, Li A. Total Synthesis of Septedine and 7-Deoxyseptedine. J Am Chem Soc 2018; 140:9025-9029. [DOI: 10.1021/jacs.8b03712] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shupeng Zhou
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Rui Guo
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Peng Yang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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42
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Affiliation(s)
- Lei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Zhuang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Xiwu Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
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43
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Hung K, Hu X, Maimone TJ. Total synthesis of complex terpenoids employing radical cascade processes. Nat Prod Rep 2018; 35:174-202. [PMID: 29417970 PMCID: PMC5858714 DOI: 10.1039/c7np00065k] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Covering: 2011-2017Radical cyclizations have a rich history in organic chemistry and have been particularly generous to the field of natural product synthesis. Owing to their ability to operate in highly congested molecular quarters, and with significant functional group compatibility, these transformations have enabled the synthesis of numerous polycyclic terpenoid natural products over the past several decades. Moreover, when programmed accordingly into a synthetic plan, radical cascade processes can be used to rapidly assemble molecular complexity, much in the same way nature rapidly constructs terpene frameworks through cationic cyclization pathways. This review highlights recent total syntheses of complex terpenoids (from 2011-2017) employing C-C bond-forming radical cascade sequences.
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Affiliation(s)
- Kevin Hung
- Department of Chemistry, University of California - Berkeley, Berkeley, CA 94720, USA.
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44
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Zhang X, Li Z, Yong H, Xie Z. Biomimetic syntheses of C23 terpenoids: structural revision of salyunnanin A and confirmation of hassanane. Org Chem Front 2018. [DOI: 10.1039/c8qo00772a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Salyunnanin A and hassanane, two C23 terpenoids, were achieved from (+)-carnosic acid in 6 and 5 steps, respectively.
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Affiliation(s)
- Xun Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Zhongle Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Huaya Yong
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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45
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Zhang Q, Zhang Z, Huang Z, Zhang C, Xi S, Zhang M. Stereoselective Total Synthesis of Hetisine-type C 20 -Diterpenoid Alkaloids: Spirasine IV and XI. Angew Chem Int Ed Engl 2017; 57:937-941. [PMID: 29205735 DOI: 10.1002/anie.201711414] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Indexed: 01/20/2023]
Abstract
The first total synthesis of the architecturally complex hetisine-type heptacyclic C20 -diterpenoid alkaloids (±)-spirasine IV and XI is reported. The A/F/G/C tetracyclic skeleton with the challenging N-C6 and C14-C20 linkages was efficiently constructed by an intramolecular azomethine-ylide-based 1,3-dipolar cycloaddition with unusual regioselectivity. SmI2 -mediated free-radical addition to the arene moiety without prior dearomatization and a stereoselective intramolecular aldol reaction further enabled rapid access to the hetisine core, providing a bicyclo[2.2.2]octane ring with a new oxygen substitution pattern.
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Affiliation(s)
- Quanzheng Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Zhongshan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Zhong Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Changhui Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Song Xi
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
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46
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Zhang Q, Zhang Z, Huang Z, Zhang C, Xi S, Zhang M. Stereoselective Total Synthesis of Hetisine-type C20
-Diterpenoid Alkaloids: Spirasine IV and XI. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711414] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Quanzheng Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences; Chongqing University; 55 Daxuecheng South Road Shapingba Chongqing 401331 China
| | - Zhongshan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences; Chongqing University; 55 Daxuecheng South Road Shapingba Chongqing 401331 China
| | - Zhong Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences; Chongqing University; 55 Daxuecheng South Road Shapingba Chongqing 401331 China
| | - Changhui Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences; Chongqing University; 55 Daxuecheng South Road Shapingba Chongqing 401331 China
| | - Song Xi
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences; Chongqing University; 55 Daxuecheng South Road Shapingba Chongqing 401331 China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences; Chongqing University; 55 Daxuecheng South Road Shapingba Chongqing 401331 China
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47
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Li Z, Zhang X, Yang Z, Zhang Y, Xie Z. Biomimetic Synthesis of Isorosmanol and Przewalskin A. J Org Chem 2017; 83:437-442. [DOI: 10.1021/acs.joc.7b02369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zhongle Li
- State Key Laboratory of Applied
Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xun Zhang
- State Key Laboratory of Applied
Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhenjie Yang
- State Key Laboratory of Applied
Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yuhan Zhang
- State Key Laboratory of Applied
Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhixiang Xie
- State Key Laboratory of Applied
Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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48
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Finkbeiner P, Murai K, Röpke M, Sarpong R. Total Synthesis of Terpenoids Employing a "Benzannulation of Carvone" Strategy: Synthesis of (-)-Crotogoudin. J Am Chem Soc 2017; 139:11349-11352. [PMID: 28763218 PMCID: PMC6309435 DOI: 10.1021/jacs.7b06823] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Carvone is a sustainable and readily available starting material for organic synthesis. Herein, we present the syntheses of various natural product scaffolds that rely on a novel benzannulation involving the α-methyl group (C-10) of carvone to afford a versatile tetralin. The utility of our synthetic approach is highlighted by its application to a short synthesis of the ent-3,4-seco-atisane diterpenoid (-)-crotogoudin. The 13-step enantiospecific synthesis features a regioselective double oxidative dearomatization, a Diels-Alder cycloaddition with ethylene gas (to construct the bicyclo[2.2.2]octane framework), and a final acid-mediated lactonization. The versatility of this benzannulation strategy is demonstrated by its utility in the preparation of the carbon skeleton of ent-3,4-seco-abietane diterpenoids using an intramolecular oxidative dearomatization.
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Affiliation(s)
- Peter Finkbeiner
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Michael Röpke
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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49
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Zhu G, Liu B. Synthesis of derivatives of podocarpane-type diterpenoids through Diels-Alder cycloaddition and photo-decarbonylation from unmasked ortho-benzoquinone. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Zweig JE, Kim DE, Newhouse TR. Methods Utilizing First-Row Transition Metals in Natural Product Total Synthesis. Chem Rev 2017; 117:11680-11752. [PMID: 28525261 DOI: 10.1021/acs.chemrev.6b00833] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
First-row transition-metal-mediated reactions constitute an important and growing area of research due to the low cost, low toxicity, and exceptional synthetic versatility of these metals. Currently, there is considerable effort to replace existing precious-metal-catalyzed reactions with first-row analogs. More importantly, there are a plethora of unique transformations mediated by first-row metals, which have no classical second- or third-row counterpart. Herein, the application of first-row metal-mediated methods to the total synthesis of natural products is discussed. This Review is intended to highlight strategic uses of these metals to realize efficient syntheses and highlight the future potential of these reagents and catalysts in organic synthesis.
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Affiliation(s)
- Joshua E Zweig
- Department of Chemistry, Yale University , 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Daria E Kim
- Department of Chemistry, Yale University , 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Timothy R Newhouse
- Department of Chemistry, Yale University , 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
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